Rowing machine

Abstract

A rowing machine, which is provided with water injection pipe vertically penetrates on the supporting part between two inner covers, the end of the water injection pipe near water tank is provided with the water distribution pipe extending to both sides, the two water distribution pipes are connected to the two inner covers to respectively connect the two water storage chambers. When the water tank needs to be filled with water, place the supporting part vertically, and add water to the water injection pipe with the help of water pump and water pipe. The water flows sequentially through the water injection pipe and the water distribution pipes on both sides, and finally evenly distributes to the storage chambers of the two water tanks.

Description

FIELD OF THE INVENTION

The present invention relates to fitness equipment, in particular to a rowing machine.

BACKGROUND OF THE INVENTION

A rowing machine is the machine used for training purposes to simulate rowing in the water, indoor rowing competitions have become a professional competition. Indoor rowing equipment are also commonly referred to as dynamometer, which could measure the energy expended by the athlete during exercise. Rowing equipment has a good effect on enhancing the muscles of the legs, waist, upper limbs, chest, and back. With each stroke, the upper limbs, lower limbs, waist, abdomen, and back will complete a complete contraction and extension during the process, which could achieve the full body muscle aerobic exercise effect. The prior art with announcement number CN208611662U discloses a water resistance rowing fitness equipment, which includes the supporting part, the water tank fixed on the supporting part, the linkage mechanism, and the corner adjustment mechanism. The water tank is internally provided with the first impeller and the second impeller, and the first impeller includes the first plate part and several first blades distributed around the first plate part, The second impeller comprises the second plate part and several second blades distributed around the second plate part.

The above-mentioned rowing device has two water tanks provided on both sides of the supporting part, which could reduce the lateral space occupied by the rowing device and increase its balance and stability during operation. However, when changing water, users need to change water for two separate tanks, which is cumbersome and therefore needs improvement.

SUMMARY OF THE DISCLOSURE

The present invention provides a rowing device that could achieve drainage or adding water for two water tanks simultaneously, in response to the shortcomings of prior art, thereby improving the convenience of water tank replacement.

In view of this, the purpose of the present invention is to propose a rowing machine to solve the above-mentioned problems.

A rowing device may include the horizontally placed supporting part and the water tank located at one end of the supporting part and respectively arranged on both sides of the supporting part; the water tank comprises the inner cover fixed on the side of the supporting part and the outer cover outside of sealing cover fitted to the inner cover, the outer cover is recessed in a direction away from the inner cover to form the water storage chamber; the water injection pipe vertically penetrates on the supporting part between the two inner covers, the end of the water injection pipe near the water tank is provided with water distribution pipe extending to both sides, two water distribution pipes are connected to two inner covers so as to respectively connect the two water storage chambers; The port of the water injection pipe away from the water tank is positioned on the side of the supporting part away from the water tank and is provided with the sealing cover. The water supply pipe is provided between the two inner covers and on the side away from the water injection pipe, two ends of the water supply pipe are respectively connected to two inner covers so as to respectively connect the two water storage chambers; The supporting part near the end of water tank extends towards the direction away from water tank is provided with the crossover pipe, the crossover pipe away from the end of supporting part extends vertically to both sides is provided with the balance pipe, the supporting frame is provided below the end of the supporting part away from the water tank; The bearing rod is extended from the supporting part near water tank and positioned between two inner covers, the body of the bearing rod is also extended with the supporting rod on the side near the balance pipe, the supporting block is provided at the end of the supporting rod away from the bearing rod; When the supporting part is placed vertically, the supporting block and the balance pipe are supported on the ground at the same time, and the supporting part is inclined towards the supporting block.

By adopting the above technical solution, when the supporting part of the rowing machine is placed horizontally, the equipment could be used normally. When the water tank needs to be filled with water, firstly place the supporting part vertically, so that the supporting block and the balance pipe could be supported on the ground at the same time, so as to stabilize the entire rowing machine in the upright state. At this point, the opening of the water injection pipe originally located at the bottom of the supporting part switches to the horizontal state, users could insert the water pipe into the opening of the water injection pipe and then add water to the water injection pipe with the help of water pump and water pipe. The water flows sequentially through the water injection pipe and the water distribution pipes on both sides, and finally evenly distributes to the water storage chambers of the two water tanks. The water pipes provided between two water tanks could ensure that the water volume in both tanks increases synchronously and prevent water injection from being obstructed. After the water tank is filled with water, the sealing cover could be re-covered to seal the opening of the water injection pipe. When the water tank needs to be drained, firstly place the supporting part of the rowing machine horizontally, and then open the sealing cover to drain directly through the opening of the water injection pipe, which is simpler and faster. After the drainage is completed, re-cover the opening of the water injection pipe with sealing cover again. When the supporting part of the rowing machine is placed horizontally, the crossover pipe and supporting frame above the balance pipe could create the gap between the supporting part and the ground, making it easier for users to open and close the sealing cover, making it more user-friendly.

As a preferred embodiment of the present invention, the opening and closing detection unit is provided on the side of supporting part away from water tank, in order to detect whether the sealing cover is closed and output the opening and closing detection signal; the opening and closing detection unit is coupled with the controller for receiving opening and closing detection signals, the controller is coupled with alarm device; The detection hole is opened on the side of the supporting block away from the supporting rod, inside the detection hole, the photoelectric proximity sensor is installed to detect whether there is the external object approaching the supporting block and output the corresponding proximity signal to the controller.

When the supporting part is placed vertically, if the proximity sensor detects the object approaching the detection hole, the controller controls the alarm device to stop alarming.

If the proximity sensor detects the object moving away from the detection hole, the controller controls the opening and closing detection unit to detect the opening and closing status of the sealing cover; If the opening and closing detection unit detects that the sealing cover is in the opening state, the controller controls the alarm device to give an alarm; On the contrary, if the opening and closing detection unit detects that the sealing cover is in the closed state, the controller controls the alarm to stop alarming.

By adopting the above technical solution, users need to use the balance pipe on the ground as the rotation shaft to lift or lower the supporting part during the process of placing rowing machine horizontally or vertically. When the rowing machine is in the upright state, the supporting block on the supporting rod is against the ground. At this point, the proximity sensor inside the detection hole could detect foreign objects (i.e. the ground) approaching the detection hole, and the alarm will not work regardless of opening status or closing status of the sealing cover. After the water tank is filled with water, it is necessary to switch the supporting part back to the horizontal status. In this time, it is necessary to use the the balance pipe as the pivot to push the supporting part backwards, during this process, the supporting block on the supporting rod should leave the ground, so that the proximity sensor inside the detection hole could detect external objects (i.e. the ground) away from the detection hole, and the controller detects the opening and closing status of the sealing cover through the opening and closing detection unit. If the sealing cover is in the closed state, the alarm will not sound, allowing the rowing machine to smoothly switch to the horizontal position. On the contrary, if the sealing cover is in the opening state, in order to prevent water flowing out from the water tank through the injection pipe, the alarm will sound to remind users to cover the sealing cover in time, which is more user-friendly.

As a preferred embodiment of the present invention, pipe sleeves are provided at the ends of two balance pipes that are far away from each other, and the cushion block is provided on the side of the pipe sleeves that is away from the supporting part, and the pressure detection device is provided on the plane of the cushion block away from the supporting part; The pressure detection device includes the first elastic connection plate fixed to the cushion block, the second elastic connection plate spaced directly opposite the first elastic connection plate and away from the cushion block, and the deformation interval formed between the first elastic connection plate and the second elastic connection plate, and the elastic connector integrally connected between the first elastic connection plate and the second elastic connection plate so as to separate the deformation interval into the first interval and the second interval; When the supporting part is placed horizontally, the first interval and the second interval are distributed upwards and downwards; When the supporting part is placed vertically, the first interval and the second interval are distributed forward and backward; The second elastic connection plate is provided with the hard gasket on the surface far away from the first elastic connection plate, and the first pressure sensor and the second pressure sensor coupled to the controller are respectively provided in the first interval and the second interval, the first pressure sensor and the second pressure sensor are both provided on the surface of the first elastic connection plate.

When the proximity sensor detects the object moving away from the detection hole, the controller controls the first pressure sensor and the second pressure sensor to detect pressure from the second elastic connection plate; Only when the first pressure sensor detects pressure, the controller controls the alarm device to stop alarming.

Only when the second pressure sensor detects pressure, or neither the first pressure sensor nor the second pressure sensor detects pressure, the controller controls the opening and closing detection unit to detect the opening and closing status of the sealing cover; If the opening and closing detection unit detects that the sealing cover is in the opening state, the controller controls the alarm device to give an alarm; On the contrary, if the opening and closing detection unit detects that the sealing cover is in the closed state, the controller controls the alarm to stop alarming.

By adopting the above technical solution, when the rowing machine is in the vertically state, the balance pipe and the supporting block on the supporting rod could be supported on the ground simultaneously. When the proximity sensor detects the external object (i.e. the ground) away from the detection hole, the first pressure sensor and second pressure sensor arranged in the first interval and second interval could determine the movement trend of the balance pipe and supporting part. Only when the first pressure sensor detects pressure from the second elastic connection plate, it indicates that the gravity center of the supporting part still leans towards the supporting rod, at this time, there is no risk of water flowing out of the water tank along the water injection pipe. Therefore, regardless of whether the sealing cover is closed or not, the controller always controls the alarm device to stop alarming, avoiding slight adjustment of the vertical angle of the rowing machine and causing false alarms. On the contrary, only when the second pressure sensor detects pressure, or neither the first pressure sensor nor the second pressure sensor detects pressure, it indicates that the gravity center of the supporting part has left the control range of the supporting rod, at this time, there is a risk of water flowing out of water tank along the water injection pipe. Therefore, the controller firstly controls the opening and closing detection unit to detect the opening and closing status of the sealing cover. If the opening and closing detection unit detects that the sealing cover is in the opening state, the controller controls the alarm device to give an alarm so as to remind the user to close the sealing cover in time and prevent water from flowing out of the water tank. On the contrary, if the opening and closing detection unit detects that the sealing cover is in the closed state, the controller controls the alarm to stop alarming, further improving the warning accuracy of the alarm.

As a preferred embodiment of the present invention, the first elastic compression component and the second elastic compression component are respectively provided in the first interval and the second interval, the first elastic compression component and the second elastic compression component are both provided on the surface of the second elastic connection plate and correspond to the first pressure sensor and the second pressure sensor respectively.

By adopting the above technical solution, the first elastic compression component and the second elastic compression component could respectively make it easier for the first pressure sensor and the second pressure sensor to detect pressure from the second elastic connection plate, further improving the detection sensitivity of the pressure detection device.

As a preferred embodiment of the present invention, the first elastic compression component and the second elastic compression component are respectively provided with the first air storage chamber and the second air storage chamber.

By adopting the above technical solution, the first elastic compression component and second elastic compression component could be compressed in the form of airbags against the first pressure sensor and second pressure sensor, thereby improving the triggering effect of the pressure sensors.

As a preferred embodiment of the present invention, the airway is connected between the first elastic compression component and the second elastic compression component, two ends of the airway are respectively connected to the first air storage chamber and the second air storage chamber.

By adopting the above technical solution, when the first elastic compression component is pressed and triggers the first pressure sensor, under the compression of the second elastic connection plate, the gas in the first air storage chamber could be transmitted to the second air storage chamber of the second elastic compression component through the airway, so as to reduce the pressure of the first elastic compression component on the first pressure sensor, thus avoids the increasing fatigue caused by long-term compression of the first pressure sensor, and improves the service life of the first pressure sensor. At the same time, the gas filled into the second air storage chamber could cause the second elastic compression component to bulge, preparing the second elastic compression component to trigger the second pressure sensor accurately. On the contrary, when the second elastic compression component is pressed and triggers the second pressure sensor, under the compression of the second elastic connection plate, the gas in the second air storage chamber could be transmitted to the first air storage chamber of the first elastic compression component through the airway, so as to reduce the pressure of the second elastic compression component on the second pressure sensor, Thus, it avoids the increasing fatigue caused by long-term compression of the second pressure sensor, and improves the service life of the second pressure sensor. At the same time, the gas filled into the first air storage chamber could cause the first elastic compression component to bulge, so that the first elastic compression component is ready to trigger the first pressure sensor.

As a preferred embodiment of the present invention, the cross silicone valve is provided inside the airway.

By adopting the above technical solution, when the first air storage chambers or second air storage chamber are filled with gas through the airway, the cross silicone valve could be automatically closed to block the airway and avoid gas backflow. When the first elastic compression component or second elastic compression component is compressed, the gas in the first air storage chamber or second air storage chamber could break through the cross silicone valve, allowing the gas to conduct smoothly.

As a preferred embodiment of the present invention, the elastic connecting plate is connected between the edges opposite the first elastic connection plate and the second elastic connection plate, and the surface of the elastic connecting plate is bent outward.

By adopting the above technical solution, the elastic connecting plate could increase the connection stability between the first elastic connection plate and second elastic connection plate, while ensuring smooth deformation of the first interval and second interval.

As a preferred embodiment of the present invention, the outer side of the end of the water injection pipe used for installing the sealing cover is provided with the external thread, and the threaded hole is provided on the sealing cover for matching the thread on water injection pipe.

By adopting the above technical solution, the thread matching between the external thread and the threaded hole could not only achieve rapid disassembly and installation of the sealing cover at the water injection pipe port, but also ensure the stability of the sealing cover after installation.

As a preferred embodiment of the present invention, the outer of the sealing cover is provided with the detection ring, and the end face of the detection ring near the supporting part is provided with multiple magnetic components, the opening and closing detection unit is the Hall sensor installed on the supporting part; When the Hall sensor detects the magnetic field generated by the magnetic component, the opening and closing detection unit determines that the sealing cover is in the closed state; On the contrary, when the Hall sensor did not detect the magnetic field generated by the magnetic component, the opening and closing detection unit determines that the sealing cover (8) is in the opening state.

By adopting the above technical solution, the combination of magnetic components and Hall sensors could effectively determine whether the sealing cover is closed to the port of the water injection pipe.

The present invention has significant benefits due to the adoption of the above technical solutions: when the supporting part of the rowing machine is placed horizontally, the equipment could be used normally. When the water tank needs to be filled with water, firstly place the supporting part vertically, so that the supporting block and the balance pipe could be supported on the ground at the same time, so as to stabilize the entire rowing machine in the upright state. At this point, the opening of the water injection pipe originally located at the bottom of the supporting part switches to the horizontal state, users could insert the water pipe into the opening of the water injection pipe and then add water to the water injection pipe with the help of water pump and water pipe. The water flows sequentially through the water injection pipe and the water distribution pipes on both sides, and finally evenly distributes to the water storage chambers of the two water tanks. The water pipes provided between two water tanks could ensure that the water volume in both tanks increases synchronously and prevent water injection from being obstructed. After the water tank is filled with water, the sealing cover could be re-covered to seal the opening of the water injection pipe. When the water tank needs to be drained, firstly place the supporting part of the rowing machine horizontally, and then open the sealing cover to drain directly through the opening of the water injection pipe, which is simpler and faster. After the drainage is completed, re-cover the opening of the water injection pipe with sealing cover again. When the supporting part of the rowing machine is placed horizontally, the crossover pipe and supporting frame above the balance pipe could create the gap between the supporting part and the ground, making it easier for users to open and close the sealing cover, making it more user-friendly.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is the structural view of the rowing machine horizontally placed.

FIG. 2 is first exploded view of this embodiment.

FIG. 3 is the second exploded view of this embodiment.

FIG. 4 is the enlarged schematic view of Part A as shown in FIG. 3.

FIG. 5 is an enlarged schematic view of Part B as shown in FIG. 3.

FIG. 6 is the third exploded view of this embodiment.

FIG. 7 is the structural view of the rowing machine vertically placed.

FIG. 8 is the enlarged schematic view of Part C shown in FIG. 2.

FIG. 9 is the enlarged schematic view of Part D shown in FIG. 2.

FIG. 10 is the system architecture diagram of this embodiment.

FIG. 11 the enlarged schematic view of Part E shown in FIG. 3.

FIG. 12 the enlarged schematic view of Part F shown in FIG. 3.

FIG. 13 is the enlarged schematic view of Part G shown in FIG. 7.

FIG. 14 is the first structural schematic view of this embodiment.

FIG. 15 is the sectional view of the pressure detection device in this embodiment.

FIG. 16 is the partial sectional view of the airway in this embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Other features, objects and advantages of the present invention will be more clearly and completely by the detailed description of the non-limiting embodiments with reference to the attached drawings.

As shown in FIGS. 1 to 4, a rowing machine disclosed in this embodiment includes the horizontally arranged supporting part 1 and the water tank 2 located at one end of the supporting part 1 and respectively arranged on both sides of the supporting part 1. When the supporting part 1 is horizontally placed, the water tank 2 is installed above the supporting part 1. The water tank 2 includes the inner cover 3 fixed on the side of the supporting part 1 and the outer cover 4 outside of sealing cover 8 fitted to the inner cover 3, the outer cover 4 is recessed in a direction away from the inner cover 3 to form the water storage chamber 5. The screw stem component 45 is arranged above the supporting part 1, two ends of screw stem component 45 is rotationally penetrates through the inner cover 3 on both sides. The part of the screw stem component 45 that penetrates through the inner cover 3 is connected to the paddle blades 46, the paddle blades 46 cooperates with the liquid in the water storage chamber 5 to simulate the water damping during rowing. The reel vortex spring box 47, the active transmission pulley 48, the driven transmission pulley 49, the transmission belt 50, and the magnetic controlled flywheel 51 are provided above supporting part 1 and between two water tanks 2, the screw stem component 45 is provided on the driven transmission pulley 49. The reel vortex spring box 47 is pulled by the fabric tape 52, the fabric tape 52 is provided with the handle 53 to simulate hand movements during rowing. When the reel vortex spring box 47 undergoes reciprocating motion, it could drive the transmission belt 50 to move, in order to drive the screw stem component 45 and paddle blades 46 to rotate, at the same time drive the magnetic control flywheel 51 to move. At this point, there are two ways to adjust the damping of the rowing machine:

Method 1: Adjust the resistance value by adjusting the distance between the internal magnet of the magnetic controlled flywheel 51 and the flywheel through the program.

Method 2: Control the water resistance by water injection volume in water tank 2.

The above dual damping adjustment method not only provide a reasonable structure, but also provide a wider adjustable range, which could better meet the exercise needs of users.

As shown in FIGS. 5 and 6, in order to improve the convenience of water changing in water tank 2, the water injection pipe 6 is vertically penetrates on supporting part 1 between two inner covers 3, the end of the water injection pipe 6 near water tank 2 is provided with the water distribution pipe 7 extending to both sides, the two water distribution pipes 7 are connected to the two inner covers 3 so as to connect the two water storage chambers 5 respectively, the port of the water injection pipe 6 away from the water tank 2 is positioned on the side of the supporting part 1 far from water tank 2 and is provided with the sealing cover 8. Specifically, the outer side of the end of the water injection pipe 6 used for installing the sealing cover 8 is provided with the external thread 40, and the sealing cover 8 is provided with the threaded hole 41 for matching the thread on water injection pipe 6. The sealing gasket (not shown in the figures) is installed at the bottom of the threaded hole 41, when the sealing cover 8 is threaded onto the end of the water injection pipe 6, the sealing gasket (not shown) could connected tightly with the end of the water injection pipe 6 to improve sealing performance. The water supply pipe 9 is provided between two inner covers 3 and on the side away from the water injection pipe 6, two ends of the water supply pipe 9 are respectively connected to two inner covers 3 so as to connect with the two water storage chambers 5, so that the water levels in the two water tanks 2 could rise and fall synchronously and prevent the water filling process from being obstructed. The supporting part 1 near the end of water tank 2 extends towards the direction away from water tank 2 is provided with the crossover pipe 10, the crossover pipe 10 away from the end of supporting part 1 extends vertically to both sides is provided with the balance pipe 11, the supporting frame 12 is provided below the end of supporting part 1 away from the water tank 2. When the rowing machine is placed horizontally, the balance pipe 11 on the crossover pipe 10 and the supporting frame 12 could create a distance between the supporting part 1 and the ground, making it convenient for users to disassemble and install the sealing cover 8. The bearing rod 13 is extended from the supporting part 1 near water tank 2 and positioned between two inner covers 3, the body of the bearing rod 13 is also extended with the supporting rod 14 on the side near the balance pipe 11, the supporting block 15 is provided at the end of the supporting rod 14 away from the bearing rod 13. As shown in FIG. 7, when supporting part 1 is placed vertically, the supporting block 15 and the balance pipe 11 are supported on the ground at the same time, and supporting part 1 is inclined towards the supporting block 15 to keep the rowing machine in an upright state.

As shown in FIG. 8, in order to increase protection effect and aesthetics, the shell 54 is installed on supporting part 1 for simultaneously wrapping two water tanks 2. Below the shell 54, the avoidance hole 55 is provided for the water supply pipe 6 to pass through. The shell 54 is composed of two parts, left and right, which belong to common knowledge in this field and will not be elaborated here.

As shown in FIGS. 9, 10, and 11, in order to remind users to cover the sealing cover 8 when laying the rowing machine down to the ground, the opening and closing detection unit 16 is provided on the side of supporting part 1 away from water tank 2, in order to detect whether the sealing cover 8 is closed and output the opening and closing detection signal. Specifically, the outer of the sealing cover 8 is provided with the detection ring 42, and the end face of the detection ring 42 near the supporting part 1 is provided with multiple magnetic components 43, the magnetic component 43 is preferred as magnet. The opening and closing detection unit 16 is the Hall sensor installed on the supporting part 1, and the detection hole 56 is opened below the shell 54 for the Hall sensor to detect signals. In this embodiment, when the sealing cover 8 is closed to the port of the water injection pipe 6, the Hall sensor could detect the magnetic field generated by the magnetic component 43, so that the opening and closing detection unit 16 could determine that the sealing cover 8 is in the closed state. On the contrary, when the sealing cover 8 detaches from the water injection pipe 6, the Hall sensor cannot detect the magnetic field generated by the magnetic component 43, so that the opening and closing detection unit 16 determines that the sealing cover 8 is in the opening state. The opening and closing detection unit 16 is coupled with the controller 17 for receiving opening and closing detection signals, and the controller 17 is preferred as one-chip computer. The controller 17 is coupled with alarm device 18, which is preferred as speaker. The detection hole 19 is opened on the side of the supporting block 15 away from the supporting rod 14, inside the detection hole 19, the photoelectric proximity sensor 20 is installed to detect whether there is the external object approaching the supporting block 15 and output the corresponding proximity signal to the controller 17.

In this embodiment, when supporting part 1 is placed vertically, if the proximity sensor 20 detects the object approaching the detection hole 19, it indicates that the supporting block 15 on the supporting rod 14 is touching the ground, indicating that the rowing machine is stable in the upright state. At this point, there is no risk of the liquid in tank 2 flowing out along water injection pipe 6, so the controller 17 controls alarm device 18 to stop alarming.

If the proximity sensor 20 detects the object moving away from the detection hole 19, it indicates that the supporting block 15 on the supporting rod 14 has already moved away from the ground, indicating that the rowing machine has a tendency to laying backwards. At this point, there is a risk of the liquid flowing out from water tank 2 through water injection pipe 6. Therefore, the controller 17 controls the opening and closing detection unit 16 to detect the opening and closing status of sealing cover 8. If the opening and closing detection unit 16 detects that the sealing cover 8 is in the opening state, the controller 17 controls alarm device 18 to alert the user to cover the sealing cover 8. On the contrary, if the opening and closing detection unit 16 detects that the sealing cover 8 is in the closed state, the controller 17 controls alarm device 18 to stop alarming.

As shown in FIG. 12, in order to improve the detection accuracy of the above functions, pipe sleeves 21 are provided at the ends of two balance pipes 11 that are far away from each other, the hard cushion block 22 is provided on the side of pipe sleeves 21 that is far away from supporting part 1, and the pressure detection device 23 is provided on the plane of cushion block 22 that is far away from supporting part 1. Specifically, the pressure detection device 23 includes the first elastic connection plate 24 fixed to the cushion block 22, the second elastic connection plate 25 spaced directly opposite the first elastic connection plate 24 and away from the cushion block 22, the deformation interval 26 formed between the first elastic connection plate 24 and the second elastic connection plate 25, and the elastic connector 29 is integrally connected between the first elastic connection plate 24 and the second elastic connection plate 25 so as to separate the deformation interval 26 into the first interval 27 and the second interval 28. In order to increase the connection stability between the first elastic connection plate 24 and the second elastic connection plate 25, the elastic connecting plate 39 is connected between the edges opposite the first elastic connection plate 24 and the second elastic connection plate 25, and the surface of the elastic connecting plate 39 is bent outward. Among them, the first elastic connection plate 24, the second elastic connection plate 25, the elastic connector 29, and the elastic connecting plate 39 are all made of rubber with better elasticity. When supporting part 1 is placed horizontally, the first interval 27 and the second interval 28 are distributed upwards and downwards. Correspondingly, as shown in FIG. 13, when supporting part 1 is placed vertically, the first interval 27 and the second interval 28 are distributed forward and backward. The second elastic connection plate 25 is provided with the hard gasket 30 on the surface far away from the first elastic connection plate 24 so as to improve the bend resistance performance of the second elastic connection plate 25. The first pressure sensor 31 and the second pressure sensor 32 coupled to the controller 17 are respectively arranged within the first interval 27 and the second interval 28, the first pressure sensor 31 and the second pressure sensor 32 are both preferred as pressure strain gauges, and are all arranged on the surface of the first elastic connection plate 24.

As shown in FIGS. 14 and 15, in order to make it easier for the first pressure sensor 31 and the second pressure sensor 32 to be triggered, the first interval 27 and the second interval 28 are respectively provided with the first elastic compression component 33 and the second elastic compression component 34; The first elastic compression component 33 and the second elastic compression component 34 are both made of rubber and integrated connected to the surface of the second elastic connection plate 25, corresponding to the first pressure sensor 31 and the second pressure sensor 32 respectively. The first elastic compression component 33 and the second elastic compression component 34 are respectively provided with the first air storage chamber 35 and the second air storage chamber 36, so that the first elastic compression component 33 and the second elastic compression component 34 are in state of airbags.

As shown in FIGS. 14 and 16, in order to reduce the fatigue of the first pressure sensor 31 and the second pressure sensor 32, the airway 37 is connected between the first elastic compression component 33 and the second elastic compression component 34, the two ends of the airway 37 are respectively connected to the first air storage chamber 35 and the second air storage chamber 36. The sum of the gas volumes in the first storage chamber 35, the second storage chamber 36, and the airway 37 is equal to the individual volume of the first storage chamber 35 or the second storage chamber 36. The cross silicone valve 38 is installed inside the airway 37 to stop or conduct the airway 37.

When the water tank 2 of the rowing machine needs to be filled with water, firstly use the balance pipe 11 as supporting shaft which is horizontally attached to the ground, then lift the supporting part 1 upwards until the supporting block 15 on the supporting rod 14 is supported on the ground. With the supporting function of balance pipe 11 and supporting block 15, the rowing machine could be stable in the upright state. Meanwhile, the cushion block 22 on the balance pipe 11 and the pressure detection device 23 on the cushion block 22 could be pressed against the ground. At this time, the proximity sensor 20 on the supporting block 15 could detect foreign objects (i.e. the ground) approaching the detection hole 19, the alarm 18 will stop alarming regardless of whether the sealing cover 8 is in the closed state. Under this state, the water injection pipe 6 originally located at the bottom of supporting part 1 is transferred to the horizontal state, which facilitates the user to unscrew the sealing cover 8 and add water to the water injection pipe 6 with the help of the water pipe (not shown in the figures) and the water pump (not shown in the figures). Among them, the outer diameter of the water pipe (not shown) should be smaller than the inner diameter of the water inlet pipe 6, so that the water pipe (not shown) inserted into the water inlet pipe 6 could create a ventilation gap with the inner wall of the water inlet pipe 6, thereby facilitating the injection of water flow. During the water injection process, the water flows sequentially through the injection pipe 6 and the water distribution pipes 7 on both sides, and finally evenly distributes to the water storage chambers 5 of the two water tanks 2. After water tank 2 is filled with water, the sealing cover 8 could be covered again to seal the opening of water injection pipe 6 and avoid water leakage.

During the process of laying down the rowing machine, if the user only slightly adjusts the standing angle of the rowing machine and still keeps the rowing machine upright, the liquid in tank 2 will not be leaked out through water injection pipe 6. At this point, the tilted supporting part 1 still leans towards the supporting rod 14, while in the pressure detection device 23, due to the force point being in front of the deformation interval 26, only the first interval 27 is compressed. Correspondingly, only the first pressure sensor 31 is pressed and triggered by the first elastic compression component 33, at this time, regardless of whether the sealing cover 8 is in the closed state, controller 17 controls alarm 18 to stop alarming so as to avoid the false alarms.

When the rowing machine is tilted backwards at a large angle, proximity sensor 20 detects the object (i.e. the ground) moving away from detection hole 19, i.e. the supporting block 15 on the supporting rod 14 is away from the ground. As the supporting part 1 of the rowing machine continues to tilt backwards, the support force applied by the ground to the pressure detection device 23 is transferred from the front side to the back side, causing the second interval 28 to be compressed. At this time, the second elastic compression component 34 on the second elastic connection plate 25 is pressed and triggers the second pressure sensor 32. Under this state, the controller 17 controls the opening and closing detection unit 16 to detect the opening and closing status of sealing cover 8. If the opening and closing detection unit 16 detects that the sealing cover 8 is in the opening state, the controller 17 controls the alarm device 18 to alert the user to cover the sealing cover 8 in time to avoid water leakage in the water injection pipe 6. At the same time, the alarm state of alarm device 18 could achieve self-lock until the opening and closing detection unit 16 detects that the sealing cover 8 is closed to the port of the water injection pipe 6, and the controller 17 will release the lock of the alarm state so as to stop alarming of alarm 18. On the contrary, if the opening and closing detection unit 16 detects that the sealing cover 8 is in closed state, the controller 17 controls alarm 18 to stop alarming.

When the rowing machine is completely laying down, neither the first pressure sensor 31 nor the second pressure sensor 32 in the pressure detection device 23 could detect pressure, and the controller 17 still controls the opening and closing detection unit 16 to detect the opening and closing status of the sealing cover 8. If the opening and closing detection unit 16 detects that the sealing cover 8 is in the opening state, the controller 17 controls alarm device 18 to alarming. On the contrary, if the opening and closing detection unit 16 detects that the sealing cover 8 is in the closed state, the controller 17 controls alarm 18 to stop alarming. The above operation process could be achieved through the built-in program of controller 17, which belongs to common knowledge in this field and will not be elaborated here.

In the above process, when the first elastic compression component 33 is pressed and triggers the first pressure sensor 31, under the compression of the second elastic connection plate 25, the gas in the first air storage chamber 35 could break through the cross silicone valve 38 and be transmitted to the second air storage chamber 36 of the second elastic compression component 34 through the airway 37, so as to reduce the pressure of the first elastic compression component 33 on the first pressure sensor 31, thus avoids the increasing fatigue caused by long-term compression of the first pressure sensor 31, and improves the service life of the first pressure sensor 31. In this state, as the second elastic compression component 34 is not compressed, when the second air storage chamber 36 is fully inflated, the cross silicone valve 38 will be automatically closed to block the airway 37 and prevent gas backflow. At the same time, the gas filled into the second air storage chamber 36 could cause the second elastic compression component 34 to bulge, preparing the second elastic compression component 34 to trigger the second pressure sensor 32. On the contrary, when the second elastic compression component 34 is pressed and triggers the second pressure sensor 32, under the compression of the second elastic connection plate 25, the gas in the second air storage chamber 36 could break through the cross silicone valve 38 and be transmitted to the first air storage chamber 35 of the first elastic compression component 33 through the airway 37, so as to reduce the pressure of the second elastic compression component 34 on the second pressure sensor 32, Thus, it avoids the increasing fatigue caused by long-term compression of the second pressure sensor 32, and improves the service life of the second pressure sensor 32. In this state, as the first elastic compression component 33 is not compressed, when the first air storage chamber 35 is fully inflated, the cross silicone valve 38 will be automatically closed to block the airway 37 and prevent gas backflow. At the same time, the gas filled into the first air storage chamber 35 could cause the first elastic compression component 33 to bulge, so that the first elastic compression component 33 is ready to trigger the first pressure sensor 31.

When water tank 2 needs to be drained, firstly place the rowing machine horizontally, and then directly open the sealing cover 8 to drain through the opening of the water injection pipe 6, which is simpler and faster. After the drainage is completed, seal the opening of the water injection pipe 6 with the sealing cover 8 again.

Hereinafter, it should be noted that the above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in this field to modify the technical solutions described in the aforementioned embodiments, or equivalently replace some of the technical features. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A rowing device comprising a horizontally placed supporting part (1) and a water tank (2) located at one end of the supporting part (1) and respectively arranged on both sides of the supporting part (1); the water tank (2) comprises an inner cover (3) fixed on the side of the supporting part (1) and an outer cover (4) outside of a sealing cover (8) fitted to the inner cover (3), the outer cover (4) is recessed in a direction away from the inner cover (3) to form a water storage chamber (5),

wherein a water injection pipe (6) vertically penetrates on the supporting part (1) between the two inner covers (3), the end of the water injection pipe (6) near the water tank (2) is provided with a water distribution pipe (7) extending to both sides, two water distribution pipes (7) are connected to two inner covers (3) so as to respectively connect the two water storage chambers (5). The port of the water injection pipe (6) away from the water tank (2) is positioned on the side of the supporting part (1) away from the water tank (2) and is provided with the sealing cover (8); a water supply pipe (9) is provided between the two inner covers (3) and on the side away from the water injection pipe (6), two ends of the water supply pipe (9) are respectively connected to two inner covers (3) so as to respectively connect the two water storage chambers (5); The supporting part (1) near the end of water tank (2) extends towards the direction away from water tank (2) is provided with a crossover pipe (10), the crossover pipe (10) away from the end of supporting part (1) extends vertically to both sides is provided with a balance pipe (11), a supporting frame (12) is provided below the end of the supporting part (1) away from the water tank (2); The bearing rod (13) is extended from the supporting part (1) near water tank (2) and positioned between two inner covers (3), the body of a bearing rod (13) is also extended with a supporting rod (14) on the side near the balance pipe (11), a supporting block (15) is provided at the end of the supporting rod (14) away from the bearing rod (13); and when the supporting part (1) is placed vertically, the supporting block (15) and the balance pipe (11) are supported on the ground at the same time, and the supporting part (1) is inclined towards the supporting block (15).

2. A rowing machine according to claim 1, wherein the opening and closing detection unit (16) is provided on the side of supporting part (1) away from water tank (2), in order to detect whether the sealing cover (8) is closed and output the opening and closing detection signal; the opening and closing detection unit (16) is coupled with the controller (17) for receiving opening and closing detection signals, the controller (17) is coupled with alarm device (18); The detection hole (19) is opened on the side of the supporting block (15) away from the supporting rod (14), inside the detection hole (19), the photoelectric proximity sensor (20) is installed to detect whether there is the external object approaching the supporting block (15) and output the corresponding proximity signal to the controller (17),

wherein when the supporting part (1) is placed vertically, if the proximity sensor (20) detects the object approaching the detection hole (19), the controller (17) controls the alarm device (18) to stop alarming and if the proximity sensor (20) detects the object moving away from the detection hole (19), the controller (17) controls the opening and closing detection unit (16) to detect the opening and closing status of the sealing cover (8); If the opening and closing detection unit (16) detects that the sealing cover (8) is in the opening state, the controller (17) controls the alarm device (18) to give an alarm; On the contrary, if the opening and closing detection unit (16) detects that the sealing cover (8) is in the closed state, the controller (17) controls the alarm (18) to stop alarming.

3. A rowing machine according to claim 2, wherein pipe sleeves (21) are provided at the ends of two balance pipes (11) that are far away from each other, and the cushion block (22) is provided on the side of the pipe sleeves (21) that is away from the supporting part (1), and the pressure detection device (23) is provided on the plane of the cushion block (22) away from the supporting part (1); The pressure detection device (23) includes the first elastic connection plate (24) fixed to the cushion block (22), the second elastic connection plate (25) spaced directly opposite the first elastic connection plate (24) and away from the cushion block (22), and the deformation interval (26) formed between the first elastic connection plate (24) and the second elastic connection plate (25), and the elastic connector (29) integrally connected between the first elastic connection plate (24) and the second elastic connection plate (25) so as to separate the deformation interval (26) into the first interval (27) and the second interval (28); When the supporting part (1) is placed horizontally, the first interval (27) and the second interval (28) are distributed upwards and downwards; When the supporting part (1) is placed vertically, the first interval (27) and the second interval (28) are distributed forward and backward; The second elastic connection plate (25) is provided with the hard gasket (30) on the surface far away from the first elastic connection plate (24), and the first pressure sensor (31) and the second pressure sensor (32) coupled to the controller (17) are respectively provided in the first interval (27) and the second interval (28), the first pressure sensor (31) and the second pressure sensor (32) are both provided on the surface of the first elastic connection plate (24);

wherein when the proximity sensor (20) detects the object moving away from the detection hole (19), the controller (17) controls the first pressure sensor (31) and the second pressure sensor (32) to detect pressure from the second elastic connection plate (25); Only when the first pressure sensor (31) detects pressure, the controller (17) controls the alarm device (18) to stop alarming; and only when the second pressure sensor (32) detects pressure, or neither the first pressure sensor (31) nor the second pressure sensor (32) detects pressure, the controller (17) controls the opening and closing detection unit (16) to detect the opening and closing status of the sealing cover (8); If the opening and closing detection unit (16) detects that the sealing cover (8) is in the opening state, the controller (17) controls the alarm device (18) to give an alarm; On the contrary, if the opening and closing detection unit (16) detects that the sealing cover (8) is in the closed state, the controller (17) controls the alarm (18) to stop alarming.

4. A rowing machine according to claim 3, wherein the first elastic compression component (33) and the second elastic compression component (34) are respectively provided in the first interval (27) and the second interval (28), the first elastic compression component (33) and the second elastic compression component (34) are both provided on the surface of the second elastic connection plate (25) and correspond to the first pressure sensor (31) and the second pressure sensor (32), respectively.

5. A rowing machine according to claim 4, wherein the first elastic compression component (33) and the second elastic compression component (34) are respectively provided with the first air storage chamber (35) and the second air storage chamber (36).

6. A rowing device according to claim 5, wherein the airway (37) is connected between the first elastic compression component (33) and the second elastic compression component (34), two ends of the airway (37) are respectively connected to the first air storage chamber (35) and the second air storage chamber (36).

7. A rowing machine according to claim 6, wherein the cross silicone valve (38) is provided inside the airway (37).

8. A rowing machine according to claim 3, wherein the elastic connecting plate (39) is connected between the edges opposite the first elastic connection plate (24) and the second elastic connection plate (25), and the surface of the elastic connecting plate (39) is bent outward.

9. A rowing machine according to claim 2, wherein the outer side of the end of the water injection pipe (6) used for installing the sealing cover (8) is provided with the external thread (40), and the threaded hole (41) is provided on the sealing cover (8) for matching the thread on water injection pipe (6).

10. A rowing machine according to claim 9, wherein the outer of the sealing cover (8) is provided with the detection ring (42), and the end face of the detection ring (42) near the supporting part (1) is provided with multiple magnetic components (43), the opening and closing detection unit (16) is the Hall sensor installed on the supporting part (1); When the Hall sensor detects the magnetic field generated by the magnetic component (43), the opening and closing detection unit (16) determines that the sealing cover (8) is in the closed state; On the contrary, when the Hall sensor did not detect the magnetic field generated by the magnetic component (43), the opening and closing detection unit (16) determines that the sealing cover (8) is in the opening state.