Abstract: A joint for a swimming pool frame, and a swimming pool including the joint are provided. The joint includes a joint body including a leg pipe holder configured to have a leg pipe of the swimming pool frame inserted into the leg pipe holder. The joint also includes a side pipe holder configured to have a side pipe of the swimming pool frame inserted in the side pipe holder. A locking hole is formed through the side pipe holder. The joint body also includes a locking part including a locking pin configured to extend through the locking hole and through a corresponding connecting hole in the side pipe, thereby holding the side pipe to the side pipe holder.

Abstract: A water circulation system for a pool comprises a water outlet assembly mounted to an inner wall of a pool, and in fluid communication with an external pump through a water outlet pipe. The water circulation system also includes an air inlet assembly mounted to the pool a preset distance from the water outlet assembly, and an air outlet assembly attached to the water outlet assembly and in fluid communication with the water outlet assembly. An air inlet passage connects the air inlet assembly to the air outlet assembly, so external air can enter the air inlet assembly and be introduced to the water outlet assembly through the air outlet assembly. Air is introduced to the water outlet by the air outlet when the water outlet assembly is blocked, reducing negative pressure at the water outlet and reducing risk that a portion of a user's body is drawn against or into the water outlet.

Abstract: The present utility model relates to an inflatable bed, comprising: a top sheet provided with at least one through hole; a bottom sheet; a lateral confining sheet, an upper edge of the lateral confining sheet being connected to an outer edge of the top sheet, and a lower edge of the lateral confining sheet being connected to an outer edge of the bottom sheet; and at least one tensioning member, the tensioning member comprising: a upper tensioning part, comprising a upper side wall and a bottom, an upper edge of the upper side wall being connected to a periphery of the through hole of the top sheet, so that the upper side wall fits the through hole of the top sheet, and a lower edge of the upper side wall being connected to the bottom; and a lower tensioning part for connecting the bottom of the upper tensioning part to the bottom sheet to form a tensioning effect at least between the bottom of the upper tensioning part and the bottom sheet; wherein the upper tensioning part of the tensioning member, the top s

Abstract: An air pump is delineated for an inflatable product that can be selectively connected thereto. The inflatable product includes a shell located on a side wall. The shell includes an internal chamber for selective placement of the air pump and an air valve for selective communication with the air pump. When the air pump is located in the internal chamber it can be moved to switch between a first position and a second position. The air pump includes an air inlet and an air outlet such that the air inlet is in communication with the air valve in the first position to deflate the inflatable product and the air outlet is in communication with the air valve in the second position to inflate the inflatable product. The air pump can also be used externally via manual connection between the air inlet or the air outlet and other inflatable products.

Abstract: An air pump is provided, the air pump comprising: an air pump housing; a first check valve; a main air pump; an airway switching device; an air-supplementing pump; an air pressure sensor; and a control device. The control device is electrically connected to the main air pump, the airway switching device, the air-supplementing pump, and the air pressure sensor, and is configured to: send a main air pump stop signal based on the air pressure sensor detecting a threshold pressure in the inflatable body during operation of the main air pump; and send an air-supplementing pump operation signal based on the air pressure sensor detecting a pressure lower than the threshold pressure in the inflatable body when the main air pump is not in operation.

Abstract: A PTC liquid heating device comprises a housing extending along a longitudinal axis and defining a liquid inlet and a liquid outlet. A PTC heating unit is inserted into the housing and extends along the longitudinal axis. The PTC heating unit includes a sleeve, a heat conductor and at least one PTC heating core. The heat conductor has a pair of metal profiles defining at least one chamber, the at least one chamber extending along the longitudinal axis to receive the at least one PTC heating core. The heat conductor is located in the sleeve and has a shape matching the sleeve. The PTC liquid heating device provides uniform and efficient heat transfer. In addition, the PTC liquid heating device has improved corrosion resistance and insulation properties, thereby prolonging the service life of the PTC liquid heating device.

Abstract: A constant pressure valve for an inflatable product is provided. The constant pressure valve comprises: a housing defining an airflow channel within. A first sealing seat is disposed in the airflow channel and a first through hole is formed in the first sealing seat. An inflation valve core comprises: a first actuating assembly and a first valve head. The first actuating assembly is configured to drive the first valve head to disengage from the first through hole, or to engage with the first through hole in a sealing manner. The constant pressure valve is switchable between an inflation state, in which the first valve head is disengaged from the first through hole, and the airflow channel is unblocked; and a cut-off state in which the first valve head is engaged with the first through hole in a sealing manner, and the airflow channel is blocked by the first valve head.

Abstract: A heating apparatus is disclosed. The heating apparatus comprises a PTC heating element, a first electrode, a second electrode, a first protection layer, a second protection layer, a first interlayer, and a second interlayer. A hardness of the first protection layer is greater than that of the first interlayer. A hardness of the second protection layer is greater than that of the second interlayer.

Abstract: A recreational water slide device is provided including an upper sheet and a lower sheet, together defining an inflatable chamber. A connecting sheet is disposed under the inflatable chamber and comprises an edge that is connected to the lower sheet. A water storage chamber is formed between the connecting sheet and the lower sheet with an opening, through which water can pass, between the inflatable chamber and the connecting sheet.

Abstract: An inflatable pool is provided, including an inflatable pool body including an inner wall, an outer wall and a bottom wall. The inner wall and the bottom wall define a water storage space, the inner wall and the outer wall form an inflatable chamber, and a cavity is defined between the inner wall and the outer wall. The inflatable pool further includes a pump device; a pool body connecting pipe including an inner end in communication with the water storage space and an outer end disposed within the cavity; and a pump connecting pipe including an outer end connected to the pump device, and an inner end including a connector detachably connected to the outer end of the pool body connecting pipe. A junction between the pool body connecting pipe and the pump connecting pipe is disposed within the cavity.

Abstract: A drainage device for an above-ground pool, and an above-ground pool including the drainage device are provided. The drainage device includes a drainage pipe, with inlet and outlet ends, and a drainage valve connected to the inlet end of the drainage pipe. The drainage valve includes a water inlet periphery, defining a water inlet in fluid communication with the inlet end of the drainage pipe, and a connecting member disposed circumferentially around the water inlet periphery. The connecting member is radially spaced apart from the water inlet periphery. The connecting member may be formed by injection molding around the water inlet periphery.

Abstract: A frame pool having a plurality of vertical support tubes, a plurality of horizontal support tubes, a pool body comprising a pool bottom and a pool wall, and a reinforcing band having a continuous annular shape and provided between the inner side of the vertical support tubes and an outer surface of the pool wall. The reinforcing band entirely or partially covering the perimeter of the pool body and being fitted with the pool wall. A fixing band having a continuous annular shape is provided about an outer surface of the reinforcing band and of the vertical support tubes. At least one fixing device is fixedly coupled to the reinforcing band, wherein the fixing band passes through the fixing device.

Abstract: A directional and timing control circuit is provided. the circuit includes a main control chip, a power supply module to supply power to the main control chip, a driver module configured to receive a control command from the main control chip and to control a motor according to the control command, a Hall module configured to detect an operation direction of the motor and transmit an operation direction signal to the main control chip, and a zero-crossing detection module configured to detect a zero-crossing cycle of the alternating current power supply to thereby obtain a current utility frequency of the alternating current power supply as a timing frequency of the main control chip, the zero-crossing detection module including an input terminal connected to the alternating current power supply and an output terminal connected to a phase detection terminal of the main control chip.

Abstract: An inflatable bed is provided, comprising: a first piece, a middle piece having a middle master piece and an oblique ring piece having an inner edge connected to the middle master piece, and a second piece; a first lateral piece connected to the first piece and to an outer edge of the oblique ring piece; and a second lateral piece connected to the middle piece and to the second piece. A first air chamber is defined by the first piece, the middle piece, and the first lateral piece. A second air chamber is defined by the middle piece, the second piece, and the second lateral piece.

Abstract: A frame pool includes a pool body having a space for containing liquid and a support frame for supporting the pool body. The pool body has an upper edge with a sleeve. The support frame includes an upper frame extending through the sleeve and a plurality of support members holding the upper frame in an elevated position. The upper frame includes first upper tubes, second upper tubes, and connecting tubes connecting the first upper tubes to the second upper tubes. Collars are provided within assembling ends of the first and second upper tubes. Each end of each of the connecting tubes is movably inserted into a collar located within an assembling end of a corresponding one of the upper tubes. Anti-rust coatings on the outer surfaces of the connecting tubes can be prevented from being worn and water can be sealed out of the tubes of the upper frame.

Abstract: An air pump is delineated for an inflatable product that can be selectively connected thereto. The inflatable product includes a shell located on a side wall. The shell includes an internal chamber for selective placement of the air pump and an air valve for selective communication with the air pump. When the air pump is located in the internal chamber it can be moved to switch between a first position and a second position. The air pump includes an air inlet and an air outlet such that the air inlet is in communication with the air valve in the first position to deflate the inflatable product and the air outlet is in communication with the air valve in the second position to inflate the inflatable product. The air pump can also be used externally via manual connection between the air inlet or the air outlet and other inflatable products.

Abstract: An air pump comprises a controller, a pump, a driving switch and a pressure sensor. The controller includes a central processing unit and defines an air inlet. The pump couples to the controller to inflate or discharge air from an inflatable body. The pump comprises a housing defining an inflating and a discharging port. The driving switch couples to the controller to implement switching between two or more air passage configurations. The pressure sensor couples to the central process unit to detect an internal pressure value of the inflatable body. The controller includes a wireless communication module which communicates with the central processing unit and a mobile terminal. The mobile terminal includes a terminal wireless communication module and a terminal input unit. The terminal wireless communication module communicates with the wireless communication module. The terminal input unit provides at least an inflation, a deflation, or a stop signal input.

Abstract: An inflatable bed is provided including an upper sheet, a lower sheet, a lateral confining sheet and a first internal sheet. The lateral confining sheet connects the upper sheet and the lower sheet to define an inflatable chamber. The upper sheet has a planar portion and an oblique portion. The planar portion of the upper sheet is connected to the lower sheet by means of the first internal sheet. The lateral confining sheet comprises a circumferential portion and an extension portion extending upward along an end of the circumferential portion. The extension portion and the oblique portion of the upper sheet are connected to form a backrest of the inflatable bed, and the backrest is internally provided with a second internal sheet which is used for connecting the oblique portion of the upper sheet to the extension portion of the lateral confining sheet.

Abstract: A wraparound inflatable headboard apparatus (100) includes a headboard portion (104), first and second arms (106, 108), and a plurality of accessories (138, 140,142, 144, 148), wherein the headboard portion (104) and the first and second arms (106, 108) are configured to accommodate plurality of accessories (138, 140,142, 144, 148), at least one of which is fixedly attached to the at least one of the headboard portion (104), the first arm (106), and the second arm (108), and at least one of which is removable from the at least one of the headboard portion (104), the first arm (106), and the second arm (108).

Abstract: An inflatable air mattress system comprises an inflatable air mattress defining an air chamber and including an inlet passageway, an inflation valve mounted to the inflatable air mattress, and a connector. The valve defines a passageway that includes a lip and a valve member. The valve member includes a seal movable between a closed position wherein the valve member is at least partially covering the lip. In an open position, inflation air can pass through the passageway and into the air chamber of the mattress. The inflatable air mattress system includes an inflating bladder including an interior portion defined by at least one wall of flexible fabric having a first end and a second end. The first end includes a wide opening securable by a closing spring, the second end includes an outlet adapted to connect to the connector.