Abstract: An installation method and an apparatus of a strain gauge sensor are capable of driving an object to be measured to generate a deformation signal by a pushing/pulling force. At least two strain gauge sensors are installed on surfaces with different amounts of deformation and at an installation location of an electrical vehicle according to the installation method. The installation method includes Method 1: When a manual pushing/pulling force is applied, the installation location is deformed and the deforming action force is directly proportional to the pushing/pulling force. Method 2: When the pushing/pulling force is applied, the vehicle deforming direction at the installation location is independent to the pushing/pulling force moving direction. Method 3: The strain detecting direction of the strain gauge sensor is the same as the vehicle deforming direction at the installation location. Therefore, pulling or driving force data can be measured accurately.

Abstract: A bicycle seat cushion lifting and adjusting device is disposed on an outer side of a piston rod inside a hydraulic cylinder and sheathed with an elastic member. The elastic member is compressed by an oil inside the cylinder into a compress status in a room temperature environment. In a low temperature environment, the volume of the oil is decreased, and the elastic member resumes its original status to fill up the space of the cylinder caused by the decreased volume of the oil, to maintain a stable oil pressure inside the cylinder. When the seat cushion lifting and adjusting device is used in a low temperature or room temperature environment, the height of the seat cushion can be adjusted successfully to maintain a stable use of the bicycle seat cushion lifting and adjusting device.

Abstract: A suspension device of a bicycle front fork is installed in a head tube of a bicycle handlebar. The suspension device includes: a cylinder with a bottom fixed to a base of the bicycle front fork and a top passed into the head tube; a piston rod with a top fixed to an inner wall of the head tube and a bottom having a piston and extended into the cylinder; a spring device coupled to the piston rod and having a force to push the piston rod away from the cylinder. The cylinder below the piston has an air chamber communicated with an intake valve of the base. The air pressure of air chamber may be adjusted to adjust the buffering pressure of the spring device, so that a user may adjust the shocking pressure of the front fork.

Abstract: A method for making the composite material wheel rim includes the steps of: configuring a plurality of inner lining chunks individually to the desired position where the spokes are to be mounted to allow the inner lining chunks to be integrated with an inner annular portion of the wheel rim, next, integrating the formed inner annular portion with an outer annular portion of the wheel rim to form a semi-finished wheel rim, and then, creating the requested threaded holes for connecting the spokes in the inner lining chunks of the inner surface of the semi-finished wheel rim subject to the requested amount and angles of the spokes. By the present method, the semi-finished wheel rim allows drilled, threaded holes subject to needs to fit different types of wheel hub units to increase the yield rate and reduce the inventory of the wheel rims.

Abstract: A bicycle seatpost structure mainly provided with a shock absorber includes a sealed chamber, a buffer element and a gas. The gas is filled in the sealed chamber to change a gas pressure in the sealed chamber. The buffer element is elastic and installed in the sealed chamber for providing an upward elastic support force to an up tube of the seatpost. When a rider sitting on the saddle presses at the saddle, a shock damping force is produced, and the shock damping force and flexibility may be adjusted by the gas pressure and changed anytime according to the rider's body weight or preference.

Abstract: A control unit for height adjustment of a bicycle seat post mainly includes a body, a controlling arm, and a pivot pin connecting the body and the controlling arm. Besides, a controlling wire is used to control a height adjustment device of the bicycle seat post to work or stop. The control unit of the present invention requires fewer assemblies and it is easy to be assembled.

Abstract: A height adjusting device for a bicycle seat post provides an up-down adjust unit. All the oil-flow control elements of the height adjusting device are arranged inside the up-down adjust unit. The oil flows between the valve port and the oil-block plate are blocked by both the oil-block plate and the valve port touching tightly in an up-down engaging manner. By the structure, what repairing the oil-flow control elements needs is to replace the up-down adjust unit when the oil-flow control elements are out of work. Therefore, it is convenient to repair and assemble. The valve port and the oil-block plate are arranged up and down so that they may touch each other closely in surfaces engaging. Thus, it provides good oil-blocking effects. Besides, the oil-block plate receives no shear stress occurring in the prior art generated from suddenly pressing down the seat. Therefore, it has a long service life.

Abstract: A bicycle seat post height adjustment mechanism, in a state of locking, has a lower valve packing ring blocking a lower valve port. Moreover, based on demands, an upper valve packing ring is allowed selectively to block an upper valve port or to be away from the upper valve port to stay on top of the upper valve port. Thus, a pin is driven to axially move down to enable a seat post to make fine adjustment, stepless adjustment or stepped adjustment in height. Moreover, the seat post may self-return to the assigned position (an upper position, a middle position or a lower position) to prevent the height of the seat from altering.

Abstract: A direction restricting device, for the inner and outer tubes of a bicycle seat post, includes at least one axial groove arranged on the wall of one of the tubes, and a direction restricting element fastened to the other tube at the position relative to the axial groove wall. The direction restricting element may be inserted into the axial groove and at least includes an elastic slider provided with an axial opening in the middle. The direction restricting element may be inserted into the axial groove to enable the axial outer walls of the direction restricting element to engage with the axial inner walls of the axial groove to eliminate the interspace between the slider and the axial groove to prevent deflection and wobbling and to reinforce the steadiness of both tubes when the inner and outer tubes rotate relative to each other.

Abstract: A control device of the height adjustment for a bicycle seat post is a pull-down control device secured to the bottom end of the lower outer tube of the seat post. A linkage mechanism is managed by a controlling wire driving the main pin of the oil hydraulic mechanism to axially move upwards to adjust the height of the seat post. Besides, the control device includes the linkage mechanism instead of an oil hydraulic mechanism, so it requires less elements and avoids oil leaking as well as working hours consumed occurring in the prior art control mechanism of the height adjustment for a bicycle seat post. Consequently the control device increases the stability in operation and the speed in assembling.

Abstract: A control mechanism of the adjustable seat post for a bicycle is fixed to the bottom end of the lower outer tube of the seat post. The control mechanism is managed by a controlling wire to drive a pin within the seat post to move axially to adjust the position of the seat post supporting the seat, so that the controlling wire will not move up and down with the seat post for seat height adjustments. Thus, the control mechanism will not generate a residual wire occurring in a prior art seat height adjusting device. It is because the controlling wire of the prior art device is disposed to the top end of the seat post. Therefore, the drawback of a prior art device can be ameliorated by arranging the control mechanism to the bottom end of the lower outer tube of the seat post.

Abstract: A control device, for the rear shock absorber of a bicycle, includes a first air chamber, a second air chamber, a third air chamber, an auxiliary air chamber, and a sliding rod. An air piston is arranged inside one of the first, second and third air chambers. However, those air chambers are respectively provided with an air hole communicating with the auxiliary air chamber. The sliding rod is configured with air tight rings, which are arranged top-to-bottom and tightly touch the inner wall of the auxiliary air chamber. Moreover, the sliding rod is provided with grooves between the air tight rings, so that the axially movement of the sliding rod may manage the first, second and third air chambers to be disconnected or to communicate with one other via the grooves to adjust the damping coefficient of the rear shock absorber.

Abstract: The present invention provides a bicycle seat post height adjustment mechanism. When said bicycle seat post height adjustment mechanism is in a state of locking, said lower valve packing ring may block said lower valve port, and moreover, based on demands, said upper valve packing ring is allowed selectively to block said upper valve port or to be away from said upper valve port so as to stay on top of said upper valve port. Thus, said pin is driven to axially move down so as to enable said seat post to make fine adjustment, stepless adjustment or stepped adjustment in height; moreover, said seat post may self-return to the assigned position (upper position, middle position or lower position) to prevent the height of the seat from altering.

Abstract: A control mechanism of the adjustable seat post for a bicycle is fixed to the bottom end of the lower outer tube of the seat post. The control mechanism is managed by a controlling wire to drive a pin within the seat post to move axially to adjust the position of the seat post supporting the seat, so that the controlling wire will not move up and down with the seat post for seat height adjustments. Thus, the control mechanism will not generate a residual wire occurring in a prior art seat height adjusting device. It is because the controlling wire of the prior art device is disposed to the top end of the seat post. Therefore, the drawback of a prior art device can be ameliorated by arranging the control mechanism to the bottom end of the lower outer tube of the seat post.

Abstract: The present invention relates to a bicycle seat post structure, and more particularly, to a structure provided with a hydraulic actuator within which is configured with an upper oil compartment, an intermediate oil compartment, and a lower oil compartment; the three oil compartments intercommunicate. It is characterized in that the bicycle seat post structure provides an upper valve moving simultaneously with the pin and configured between the upper oil compartment and the intermediate oil compartment; the upper valve will be closed to disconnect the upper oil compartment from the intermediate oil compartment when the pin is in a state of locking. Thus, the valve will stop moving up because it is positioned above the upper and the intermediate oil compartments and consequently controlled by the oil within the compartments, so as to stop the seat sliding upward and further to be combined with the bicycle frame as a whole.

Abstract: An electric bicycle motor power control apparatus performs a linear program for a compensation signal through a linear computation module according to the data such as exercise strength and pedaling angle of a user pedaling a bicycle, and transmits the signal to a proportion and integration module for computation to provide a stable input power to a motor, so as to achieve the effects of controlling the motor output, minimizing the change of periodical output while the user is pedaling the pedal, and providing a mild and consistent motor output.

Abstract: A composite material wheel rim structure includes an inner rim surface and a rigid inner lining material encased by the inner rim surface to form an integrated composite structure capable of sustaining the drilling of spaced threaded holes of desired orientations and diameters for threaded engagement with corresponding attachment caps of wheel spokes so that the tightness of each spoke may be varied by the depth. The cap is threaded into the threaded hole.

Abstract: A bike battery and control system mounting structure is disclosed. A main frame tube is located between head tube and stem, having a folder attached to it which enables it to be folded, where a battery and a control system can be placed into the tube from the tube openings at folding location, and the battery and the control system are mounted therein out of sight.

Abstract: A composite material wheel rim structure is disclosed, where an inner rim surface of the composite material wheel rim is linked by an attachment cap of each spoke, and a rigid inner lining chunk is enwrapped by the inner rim surface during the shaping of the composite material wheel rim, which enables the drilling of threaded holes at the inner lining chunk. And the inner lining chunk is used for the sustaining of the destruction due to the drilling for the threaded holes and of the strain due to the link of the attachment caps of the spokes, which enables a handy drilling for the threaded holes at the inner rim surface of the composite material wheel rim. And the adjustment of the tightness of a spoke is subject to the adjustment of the depth that the attachment cap joined helically to that threaded hole.

Abstract: An adjustable buffer device is disposed between one end of the rear stay and the central portion of a cross bar. The adjustable buffer device has a hollow main body, a seal ring, a shaft cover, a shaft, a spring, and an adjustable valve. A cover seat is disposed on the upper portion of the main body. A valve seat is disposed beneath the cover seat. The adjustable valve which is inserted in the inner chamber of the valve seat controls the amount of oil in the passage between the oil hole and the communicating hole.