Exercise bicycle

Abstract

The present invention provides an exercise bicycle that combines both a riding mode and a training mode and has functions of vehicle body stability and resistance adjustment. 【Solution means】When riding as a general bicycle, the user sits on the seat part, steps on the drive pedal to drive the pedal chain 211, and drives the drive chain by using the first switching gear 44 and the second switching gear provided at both ends of the first shaft center part 42, so that the drive gear unit rotates the moving wheels on both sides of the frame unit. When switching to the rehabilitation function, the switching operation part 41 of the power switching device 4 is tilted, the engagement plate 43 is pushed out by using the separation guide groove 45 to separate the engagement plate and the butting plate 441, and the drive pedal is in a free rotation state where it cannot drive the drive gear unit. The resistance of the drive pedal is adjusted by using the resistance adjustment part. Alternatively, the handbrake operation part of the gear brake device is tilted simultaneously, and the stopper part locks the brake gear so that the moving wheels are in a locked state.

Description

Technical Field

[0001] The present invention relates to the technical field of exercise bicycles, and more particularly to an exercise bicycle that combines both a riding mode and a lower limb training mode, and provides the stability of the vehicle body and a resistance adjustment function.

Background Art

[0002] In the fields of rehabilitation, fitness, and sports, bicycles have long been regarded as excellent tools for lower limb training. However, conventional designs have many problems in actual use, especially in the fields of rehabilitation and indoor exercise.

[0003] First, although riding a conventional road bike has an exercise effect, for people undergoing rehabilitation, the elderly, or users with low physical strength, the safety risk is relatively high. For example, there is a risk of losing balance and falling, or being involved in a traffic accident. Furthermore, outdoor riding is affected by factors such as weather and location, and is not always an environment suitable for training. Therefore, spin bikes are generally used in fitness gyms and rehabilitation centers. However, spin bikes are large in volume and expensive, so they are not suitable for home use, and users need to go to a fitness gym or medical institution, which increases time and cost and reduces convenience and popularity.

[0004] Secondly, some conventional bicycles can lock the rear wheel to fix the vehicle body, but most of them rely on the friction between the brake pads and the rim. However, such a mechanism may reduce the fixing effect due to wear of the brake pads after long-term use, and furthermore, due to elastic deformation of the brake pads, slight slippage of the wheels may occur, which may affect the stability of the user. Especially during rehabilitation or high-intensity training, such instability may pose an even greater risk to the user.

[0005] In addition, among indoor training bicycles whose resistance can be adjusted, there are some that can reproduce the exercise intensity of outdoor running. However, these devices usually change the resistance by using the magnetic resistance of the wheel or the friction of the tire. The former has too little influence on the resistance, and the latter generates noise.

[0006] In summary, conventional bicycles and training equipment have problems such as safety, stability, cost, and convenience when used for rehabilitation or indoor exercise, and cannot simultaneously meet the needs of static training and daily cycling.

Summary of the Invention

Problems to be Solved by the Invention

[0007] The present invention aims to provide an exercise bicycle that can easily and quickly switch between the riding mode and the training mode by using the design of a power switching device to change the driving pedal to the freewheeling mode, and further, by using the design of a gear brake device to firmly lock the driving gear unit, prevent the sliding of the moving wheels during training, improve the safety in use, and reduce the noise caused by tire friction by directly adjusting the rotational resistance of the driving pedal using a resistance adjustment component.

Means for Solving the Problems

[0008] To achieve the above object, the structure of the present invention comprises a frame unit, a seat component, a drive pedal, a pedal chain, two moving wheels, a drive gear unit, a power switching device, a gear brake device, and a resistance adjustment component. The power switching device includes a switching operation component, an engaging disk, a first switching gear, a butting disk, and a separation guide groove. The gear brake device includes a second switching gear, a drive chain, a brake gear, a hand brake operation component, and a stopper component. Among them, the seat component is provided on the frame unit, and the drive pedal is provided on the frame unit and is located on one side of the seat component. The pedal chain is connected to one side of the drive pedal and is driven by the drive pedal. Each of the moving wheels is provided on both sides of the seat component, and the drive gear unit is connected to one side of the moving wheel and drives the rotation of the moving wheel. The power switching device is provided on the frame unit and is located between the drive pedal and the drive gear unit. The gear brake device is provided on the frame unit and is located between the power switching device and the drive gear unit. The resistance adjustment component is provided on one side of the frame unit adjacent to the drive pedal, the switching operation component is movably provided on one side of the frame unit, and the engaging disk is movably provided on one side of the switching operation component via a first axial center component. The first switching gear is connected to the pedal chain and is fixed to the first axial center component, and the butting disk is fixed to one side of the first switching gear adjacent to the engaging disk. The separation guide groove is formed on the switching operation component, and the second switching gear is pivotally provided on one side of the frame unit away from the switching operation component via the first axial center component. The drive chain is connected to the second switching gear and the drive gear unit, and the brake gear is provided on one side of the drive gear unit and rotates synchronously with the drive gear unit. The hand brake operation component is pivotally provided on one side of the frame unit, and the stopper component is provided on one side of the hand brake operation component.

Effects of the Invention

[0009] When the user uses the present invention as a general bicycle and rides it, they sit on the seat part, step on the drive pedal to move the pedal chain, and use the first switching gear and the second switching gear provided at both ends of the first shaft center part to move the drive chain, so that the drive gear unit rotates the moving wheels on both sides of the frame unit. When it is desired to switch to the rehabilitation function, the switching operation part of the power switching device is tilted, and the meshing disk is pushed out using the separation guide groove, so that the meshing disk and the butting disk are separated, and the drive pedal is in an idling state where it cannot drive the drive gear unit. At the same time, by adjusting the resistance of the drive pedal using the resistance adjustment part, pedal training of different intensities can be provided. Alternatively, considering safety, by simultaneously switching the handbrake operation part of the gear brake device, the stopper part locks the brake gear to form a state where the moving wheels are locked, so that the riding function and the rehabilitation function can be easily switched.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Modes for Carrying Out the Invention

[0011] As shown in FIGS. 1 to 3, the present invention comprises a frame unit 1, a seat component 2, a drive pedal 21, a pedal chain 211, two moving wheels 22, a drive gear unit 3, a power switching device 4, a gear brake device 5, and a resistance adjusting component 6.

[0012] The seat component 2 is provided on the frame unit 1.

[0013] The drive pedal 21 is provided on the frame unit 1 and is located on one side of the seat component 2.

[0014] The pedal chain 211 is connected to one side of the drive pedal 21 and is driven by the drive pedal 21.

[0015] The two moving wheels 22 are provided on both sides of the seat component 2.

[0016] The drive gear unit 3 is connected to one side of each moving wheel 22 and drives the moving wheel 22 to rotate.

[0017] The power switching device 4 is provided on the frame unit 1 and is located between the drive pedal 21 and the drive gear unit 3. A switching operation component 41 movably provided on one side of the frame unit 1, an engaging disk 43 movably provided on one side of the switching operation component 41 via a first shaft core component 42, a first switching gear 44 connected to the pedal chain 211 and fixed to the first shaft core component 42, a butting disk 441 fixed to one side of the first switching gear 44 adjacent to the engaging disk 43, and a separation guide groove 45 formed on the switching operation component 41 are provided. The separation guide groove 45 accommodates the engaging disk 43 to mesh the engaging disk 43 with the butting disk 441, and further separates the engaging disk 43 from the butting disk 441 by pushing out the engaging disk 43.

[0018] The gear brake device 5 is provided on the frame unit 1 and is located between the power switching device 4 and the drive gear unit 3, and is pivotally provided on one side away from the switching operation component 41 in the frame unit 1 via the first shaft center component 42. It includes a second switching gear 51, a drive chain 52 connected between the second switching gear 51 and the drive gear unit 3, a brake gear 53 provided on one side of the drive gear unit 3 and rotating synchronously with the drive gear unit 3, a hand brake operation component 54 pivotally provided on one side of the frame unit 1, and a stopper component 55 provided on one side of the hand brake operation component 54 for locking the brake gear 53.

[0019] The resistance adjustment component 6 is provided on one side adjacent to the drive pedal 21 in the frame unit 1 to adjust the rotational resistance of the drive pedal 21. Further, the resistance adjustment component 6 includes an operation part 61 provided on one side of the frame unit 1, a connecting rod part 62 provided on one side of the operation part 61, and a tightening part 63 provided at one end of the connecting rod part 62 for tightening the drive pedal 21.

[0020] Among them, the frame unit 1 is a metal frame, and includes a seat frame 11 for installing the seat component 2 and a wheel frame 12 for installing the moving wheels 22. The seat component 2 includes a seat part 23 provided on the seat frame 11 and a backrest part 24 provided on the seat frame 11 and located on one side of the seat part 23. In this embodiment, the seat part 23 and the backrest part 24 are mounted on the seat frame 11 by an elastic belt body. Both of the two moving wheels 22 are pivotally connected to the drive shaft 31 and are located on both sides of the wheel frame 12. The drive pedal 21 is pivotally provided on a portion of the wheel frame 12 that extends forward and is located in front of the seat part 23. The drive pedal 21 is a pedal commonly used in bicycles. The pedal chain 211 is directly driven by the drive pedal 21 and is connected to the first switching gear 44. The drive gear unit 3 includes the drive shaft 31 and a gear part 32 that rotates synchronously with the drive shaft 31. The power switching device 4 is a mechanical structure for switching between the riding mode and the training mode, and the switching operation part 41 of the power switching device 4 can be a handle structure including a hollow disk 411. The separation guide groove 45 is a gradually expanding wall formed on the inner wall of the hollow disk 411. The first axial center component 42 is for transmitting the power of the drive pedal 21 to the drive gear unit 3, so the first switching gear 44 and the second switching gear 51 are respectively provided at both ends. The first switching gear 44 is used to connect the pedal chain 211, and the second switching gear 51 is used to connect the drive chain 52. The mating disk 441 is a crown gear connected to one side of the first switching gear 44, and the connection method can be any one of integral molding, locking fixation, adhesion, or welding. The meshing disk 43 is a crown gear that can move axially on the first axial center component 42, and the tooth parts of the meshing disk 43 and the mating disk 441 are arranged facing each other and can be coupled to each other. The first axial center component 42 preferably includes an elastic component 422 for pushing up the meshing disk 43.Since the connecting part between the second switching gear 51 and the meshing disk 43 in the first axial center part 42 is hexagonal, it has the function of transmitting torque. However, the connecting part of the butting disk 441 in the first axial center part 42 is cylindrical and generally does not have the function of transmitting torque. In this embodiment, furthermore, a bearing 421 (Bearing) is installed between the two. The gear brake device 5 is a mechanical structure that directly restricts the rotation of the drive gear unit 3. The brake gear 53 of the gear brake device 5 itself does not mesh with any structure, but is fixed to the drive shaft 31 of the drive gear unit 3. The hand brake operating part 54 is a handle, and the stopper part 55 is a rod inserted into the tooth groove of the gear. In this embodiment, a T-shaped fastener integrating the hand brake operating part 54 and the stopper part 55 is taken as an example. The resistance adjusting part 6 is, for example, a two-stage tightening structure and abuts against the outside of the axis of the drive pedal 21. However, the corresponding shapes of the above-mentioned parts are only examples of preferred embodiments, and any shape with the same function belongs to the scope of the present invention and is not limited to the above examples.

[0021] As shown in FIGS. 1 to 8, the appearance of the frame unit 1 of the present invention is in the shape of a wheelchair and includes a seat part 23, a backrest part 24, moving wheels 22, and rear wheels. Since it simultaneously serves many purposes such as sports, riding, rehabilitation, and vehicles, a drive pedal 21 and a handle are installed. Naturally, the overall appearance does not necessarily have to be in the shape of a wheelchair. For example, the seat part 2 may only include the seat part 23 and not include the backrest part 24. The backrest part 24 is provided to enable the user to ride more comfortably and safely and does not affect the implementation of subsequent functions.

[0022] As shown in FIG. 4, when the user uses the present invention for riding or exercise, the user can sit on the seat part 2 and step on the drive pedal 21 to interlock the drive shaft 31 and control the moving wheels 22 to move forward. Specifically, when the user steps on the drive pedal 21 to drive the pedal chain 211, the pedal chain 211 directly drives and rotates the first switching gear 44. At this time, if the meshing disk 43 and the butting disk 441 are in a meshed state with each other, the butting disk 441 rotates synchronously with the first switching gear 44, and at the same time, meshes with the meshing disk 43 and drives the meshing disk 43 to rotate. The meshing disk 43 uses the first shaft center part 42 to drive and rotate the second switching gear 51. As a result, in appearance, the first switching gear 44, the butting disk 441, the meshing disk 43, and the second switching gear 51 are all in a state of rotating synchronously, and the drive chain 52 can be driven using the second switching gear 51, and the gear part 32 of the drive gear unit 3 is rotated by the drive chain 52. Further, by driving the drive shaft 31 using the gear part 32, the moving wheels 22 on both sides of the frame unit 1 rotate, thereby realizing the normal riding mode in the present invention.

[0023] As shown in FIGS. 5 to 6, when the user wants to switch the present invention to the training mode or the rehabilitation mode, by simply tilting the switching operation part 41 of the power switching device 4, the separation guide groove 45 on the hollow disk 411 swings on one side of the meshing disk 43. Since the separation guide groove 45 has a wall shape that gradually widens, before swinging, the side edge of the meshing disk 43 is located at the narrow wall surface 451 portion of the separation guide groove 45, that is, there is enough space for the meshing disk 43 to approach the butting disk 441 on the hollow disk 411. However, in the process of the switching operation part 41 swinging, the thickness of the wall surface of the separation guide groove 45 on one side of the meshing disk 43 gradually increases, and the meshing disk 43 is gradually pushed outwards. When the side edge of the meshing disk 43 is located at the wide wall surface 452 portion of the separation guide groove 45, the butting disk 441 is completely separated from the meshing disk 43. At this time, the first switching gear 44 driven by the pedal chain 211 and the butting disk 441 cannot interlock with the meshing disk 43 and the second switching gear 51 again. Furthermore, since the first shaft center part 42 of the part of the first switching gear 44 and the butting disk 441 is cylindrical (or fitted into the bearing 421), the butting disk 441 alone cannot drive the first shaft center part 42 to rotate, and naturally, the moving wheel 22 cannot be rotated either. In appearance, the driving pedal 21, the pedal chain 211, and the first switching gear 44 are in a state of idling, thereby realizing the training mode or the rehabilitation mode of the present invention. On the contrary, when the user wants to switch from the training mode or the rehabilitation mode to the normal riding mode, by simply tilting the switching operation part 41 in the opposite direction, the operation of the wide wall surface 452 of the separation guide groove 45 pushing the meshing disk 43 outwards is cancelled. At this time, the elastic part 422 on one side of the first shaft center part 42 pushes the meshing disk 43 into the inner direction to the part of the butting disk 441, and in combination with the operation of the user stepping on the driving pedal 21, the meshing disk 43 and the butting disk 441 mesh correspondingly. Among them, the elastic part 422 can be an elastic pad or a compression spring mounted on the first shaft center part 42. In this embodiment, a compression spring is used as an example.

[0024] As shown in FIG. 7, in the training mode or the rehabilitation mode, by simultaneously using the resistance adjustment component 6 to adjust the resistance of the drive pedal 21, it is possible to provide pedal training of different intensities. Specifically, the resistance adjustment component 6 of this embodiment takes a two-stage tightening structure as an example, and includes an operation part 61 provided on one side of the frame unit 1, a connecting rod part 62 provided on one side of the operation part 61, and a tightening part 63 provided at one end of the connecting rod part 62 for tightening the drive pedal 21. In this embodiment, the operation part 61 and the connecting rod part 62 are integrated into a T-shaped fastener, and the brake pad-shaped tightening part 63 is connected to the end of the connecting rod part 62 and abutted against the outside of the axis of the drive pedal 21. Thereby, when the user pulls the connecting rod part 62 by using the operation part 61 and separates the tightening part 63 from the drive pedal 21, the tightening part 63 is in a non-resisting state where it does not act. On the contrary, when the user pushes the connecting rod part 62 by using the operation part 61 and the tightening part 63 presses the drive pedal 21, resistance is generated when the drive pedal 21 rotates. Alternatively, a slot-shaped positioning part 64 can be provided in combination on the frame unit 1 to fix the position of the operation part 61 and ensure that the tightening part 63 is in a state of reliable contact. In particular, since the tightening part 63 contacts the exterior of the axis of the drive pedal 21 and does not contact the frame of the moving wheel 22, the user can generate resistance by applying force, and an excellent tactile effect can be obtained. Also, since the arc length of the exterior at the axis of the drive pedal 21 is much shorter than the arc length of the frame of the moving wheel 22, in the same rotation width of the drive pedal 21, the friction range between the tightening part 63 and the exterior of the axis is much smaller than the friction range of the moving wheel 22, and the generated noise can be reduced.

[0025] As shown in FIG. 8, in the training mode, rehabilitation mode, or stationary state, considering safety, by simultaneously switching the handbrake operating component 54 of the gear brake device 5, the stopper component 55 locks the brake gear 53, and the moving wheel 22 can be locked. Specifically, when the user pulls the stopper component 55 using the handbrake operating component 54 and separates the stopper component 55 from the brake gear 53, the stopper component 55 is in a normal state where it does not act. Conversely, when the user pushes the stopper component 55 using the handbrake operating component 54 and the end of the stopper component 55 is inserted into the tooth groove of the brake gear 53, the brake gear 53 cannot rotate, and the drive gear unit 3 also cannot rotate in conjunction, thereby locking the moving wheel 22. Alternatively, by using the positioning component 56 provided on the frame unit 1 to fix the handbrake operating component 54 and the stopper component 55, a locked state can be reliably maintained. Compared with the braking method of a general brake pad, the brake using the gear brake device 5 is not affected by the frictional force of the moving wheel 22. As long as the stopper component 55 or the brake gear 53 is not damaged, it will not slip. Moreover, since it is a rigid lock, it will not slip even when pushed by an external force, and overall, it has high safety and stability.

Explanation of Signs

[0026] 1 Frame unit 11 Seat frame 12 Wheel frame 2 Seat component 21 Drive pedal 211 Pedal chain 22 Moving wheel 23 Seat part 24 Backrest part 3 Drive gear unit 31 Drive shaft 32 Gear part 4 Power switching device 41 Switching operating component 411 Hollow disk 42 First axial center component 421 Bearing 422 Elastic part 43 Meshing disk 44 First switching gear 441 Contact disk 45 Separation guide groove 451 Narrow wall surface 452 Wide wall surface 5 Gear brake device 51 Second switching gear 52 Driving chain 53 Brake gear 54 Handbrake operating part 55 Stopper part 56 Positioning part 6 Resistance adjusting part 61 Operating part 62 Connecting rod part 63 Tightening part 64 Positioning part

Claims

1. An exercise bicycle comprising a frame unit, a seat part, a driving pedal, a pedal chain, two moving wheels, a driving gear unit, a power switching device, a gear brake device, and a resistance adjusting part, The seat component is provided on the frame unit, The driving pedal is provided on the frame unit and is located on one side of the seat component, The pedal chain is connected to one side of the driving pedal and is driven by the driving pedal, The two moving wheels are provided on both sides of the seat part, The driving gear unit is connected to one side of each of the moving wheels and drives the moving wheels to rotate; The power switching device is The frame unit is provided between the driving pedal and the driving gear unit, The power switching device is a switching operation part movably provided on one side of the frame unit, a meshing disk movably provided on one side of the switching operation part via a first shaft part, and a first switching gear connected to the pedal chain and fixed to the first shaft part; a butting plate fixed to one side adjacent to the meshing plate of the first switching gear; A separation guide groove is formed in the switching operation component, The separation guide groove accommodates the meshing plate to mesh with the butt plate, and further pushes out the meshing plate to separate the meshing plate from the butt plate; The gear brake device is provided on the frame unit and is located between the power switching device and the drive gear unit; The gear brake device a second switching gear pivotally mounted on one side of the frame unit away from the switching operation component via the first shaft component; a drive chain connected to the second switch gear and the drive gear unit; a brake gear provided on one side of the drive gear unit and rotating in synchronization with the drive gear unit; A handbrake operating component pivotally mounted on one side of the frame unit; a stopper part provided on one side of the handbrake operating part and configured to lock the brake gear; The resistance adjusting component is provided on one side of the frame unit adjacent to the driving pedal, thereby adjusting the rotational resistance of the driving pedal.

2. 2. The exercise bicycle according to claim 1, wherein the resistance adjusting part comprises an operating part provided on one side of the frame unit, a connecting rod part provided on one side of the operating part, and a fastening part provided on one end of the connecting rod part to fasten the driving pedal.

3. 2. The exercise bicycle according to claim 1, wherein the frame unit includes a positioning part for positioning the stopper part.

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