A spinning bike

Abstract

The present application relates to the technical field of sports equipment and provides a spinning bike comprising a frame, a seat, a handlebar, and two adjustment assemblies, the two adjustment assemblies being disposed on either side of the frame. The adjustment assemblies comprise an adjustment tube, an adjustment plate, an adjustment handlebar, and a stopper. The adjustment tube is disposed along a first direction in its longitudinal direction, the adjustment tube is provided with a plurality of fixing holes spaced apart along the first direction, the adjustment plate is slidably connected to the adjustment tube along the first direction, a clearance hole is provided on the adjustment plate, the adjustment handlebar is disposed on the adjustment plate, and the stopper is disposed on one side of the adjustment plate. The stopper is inserted through the clearance hole and fixedly connected to the fixing hole. Based on this, the applicability of the spinning bike can be improved.

Description

Technical Field

[0001] The present application relates to the field of sports equipment, and in particular to a spinning bike. Background Art

[0002] As living standards continue to improve in my country, people are increasingly focusing on exercise, with spinning being a popular option. Easy to learn, spinning is suitable for people of all ages and provides a full-body aerobic workout while also strengthening the legs and improving the shape of the lower limbs.

[0003] like Figure 1 As shown, the existing spinning bike includes a frame 1, a seat 2, a handlebar 3, a flywheel 4, a transmission structure 5, a pedal wheel 6 and a pedal 7. The user sits on the seat 2, leans forward at a certain angle and holds the handlebar 3, and steps on the pedal wheel 6 through the pedal 7, which drives the flywheel 4 to rotate under the action of the transmission structure 5 to achieve cycling exercise.

[0004] With respect to the above-mentioned related technologies, the inventor believes that when a user sits on a bicycle seat and holds the handlebars while riding, the angle at which the user's body is tilted is limited, and the applicability is poor. Summary of the Invention

[0005] In order to improve the applicability of a spinning bike, the present application provides a spinning bike.

[0006] The present application provides a spinning bike that adopts the following technical solution:

[0007] A spinning bike comprises a frame, a seat, a handlebar and two adjustment assemblies, wherein the two adjustment assemblies are respectively arranged on both sides of the frame, and the adjustment assemblies comprise an adjustment tube, an adjustment plate, an adjustment handlebar and a limit piece. The length direction of the adjustment tube is arranged along a first direction, and the adjustment tube is provided with a plurality of fixing holes spaced apart along the first direction. The adjustment plate is slidably connected to the adjustment tube along the first direction, and a clearance hole is provided on the adjustment plate. The adjustment handlebar is arranged on the adjustment plate, and the limit piece is arranged on one side of the adjustment plate, and the limit piece is passed through the clearance hole and is plugged and fixed to the fixing hole.

[0008] By adopting the above technical solution, the adjustment plate is slidably connected to the adjustment tube and then fixed by a limit member to change the position of the adjustment handlebar. When the user sits on the seat and rides, the user can hold the adjustment handlebar to adjust the body inclination angle, thereby increasing the range of the body inclination angle, thereby improving the applicability of the exercise bike and improving the exercise effect.

[0009] Preferably, the limiting member includes an insert rod, a pull plate and a first spring, the insert rod is passed through the clearance hole and inserted into the fixing hole, the pull plate is fixedly connected to the end of the insert rod away from the fixing hole, the first spring is arranged between the adjustment plate and the pull plate, and drives the pull plate to move toward the side away from the adjustment plate.

[0010] By adopting the above technical solution, when the position of the handlebar needs to be changed, the pull plate is pulled to disengage the insertion rod from the fixing hole, and then the adjustment plate is slid to a suitable position. At this time, the pull plate is released. Under the action of the first spring, the pull plate is reset to drive the insertion rod to be inserted into the fixing hole for fixation. The operation is convenient and simple, so as to facilitate changing the position of the handlebar.

[0011] Preferably, the fixing hole is located on a side of the adjusting tube close to the vehicle frame, and the two pull plates are connected by an adjusting rope.

[0012] By adopting the above technical solution, when the position of the adjustable handlebar needs to be changed, the adjusting rope is pulled toward the position where the adjustable handlebar is to be adjusted. Under the action of the adjusting rope, the two pull plates move toward each other, so that the two insertion rods are disengaged from the fixing holes. The adjusting rope drives the two adjusting plates to move, and then the adjusting rope is released. Under the action of the first spring, the pull plate is reset and drives the insertion rod to be inserted into the fixing hole for fixation, which further facilitates changing the position of the adjustable handlebar.

[0013] Preferably, the clearance hole is provided with a plurality of first limit blocks spaced apart along the second direction near one end of the first spring, and the insertion rod is provided with a plurality of limit grooves spaced apart along the second direction, the first limit block is limited in the limit groove, and the limit groove is provided with a second limit block away from one end of the pull plate, and the second limit block is used to abut against the first limit block.

[0014] By adopting the above technical solution, since the first limit block is limited in the limit groove, the stability of the movement of the insertion rod driven by the pull plate is improved. When the insertion rod moves to a certain distance toward the side close to the pull plate, the second limit block abuts against the first limit block, limiting the further movement of the insertion rod, thereby minimizing the possibility that the insertion rod will detach from the adjustment plate.

[0015] Preferably, pulleys are rotatably connected to both inner sides of the adjustment plate, and sliding grooves are provided on both sides of the adjustment tube. The length direction of the sliding grooves is arranged along the first direction, and the pulleys are embedded in the sliding grooves and contact the adjustment tube.

[0016] By adopting the above technical solution and setting a pulley, the sliding of the adjustment plate is made smoother, and the pulley is embedded in the slide groove to limit the adjustment plate from detaching from the adjustment tube, thereby improving the stability of the handlebar adjustment.

[0017] Preferably, the adjustable handlebar includes a mounting portion and a handlebar portion, one end of the mounting portion is fixedly connected to the adjustment plate, and the other end is threadedly connected to the handlebar portion.

[0018] By adopting the above technical solution, by providing a mounting portion and a handlebar portion, the handlebar portion and the mounting portion are threadedly connected to facilitate installation and removal of the handlebar portion. During riding, the handlebar portion of different shapes can be replaced according to one's own needs to improve the applicability of the spinning bike.

[0019] Preferably, a first mounting block is fixedly connected to the mounting portion and a second mounting block is slidably connected thereto, a second spring is provided between the first mounting block and the second mounting block, a pull rope is provided on a side of the second mounting block close to the first mounting block, and the other end of the pull rope is rotatably connected to an end of the handlebar portion close to the mounting portion.

[0020] By adopting the above technical solution, when the user sits upright and rides, the handlebar is separated from the mounting portion by rotating the handlebar, and the user first holds the handlebar and pulls it toward the side away from the mounting portion, driving the second mounting block to move toward the side close to the first mounting block and compressing the second spring. Then, the force pulling the handlebar is reduced. Under the action of the second spring, the second mounting block moves toward the side away from the first mounting block, driving the handlebar to move toward the side close to the mounting portion. The above steps are repeated to achieve exercise for the user's upper body, increase the use function of the spinning bike, and improve the overall exercise effect.

[0021] Preferably, an adjusting bolt is threadedly connected to one side of the second mounting block, a resistance block is provided on the adjusting bolt, the resistance block abuts against the mounting portion, and a clearance groove for the adjusting bolt to pass through is provided on the mounting portion.

[0022] By adopting the above technical solution, by setting the adjustment bolt and the resistance block, and by rotating the connecting bolt, the resistance block is moved closer to or away from the mounting portion, thereby increasing or reducing the friction force of the sliding of the second mounting block. The user can make adjustments according to his or her own situation, thereby improving the applicability of the exercise bike.

[0023] Preferably, the adjusting handle is rotatably connected to a footrest at a side away from the frame, and a tension spring is provided on the adjusting handle, and the tension spring drives the footrest to rotate toward a side close to the seat.

[0024] By adopting the above technical solution and providing a footrest, the user can step on the footrest after completing exercise to stretch and relax the legs, thereby increasing the use function of the spinning bike.

[0025] Preferably, a limit plate is provided on the adjustment handle, and the limit plate is used to limit the rotation angle of the footrest.

[0026] By adopting the above technical solution, a limit plate is provided to limit the maximum rotation angle of the footrest, thereby avoiding injuries caused by excessive rotation when the user steps on the footrest, thereby improving the safety of the exercise bike.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. When the user sits on the seat and rides, he can hold the handlebar to adjust the body's tilt angle. The adjustment plate can be slidably connected to the adjustment tube and then fixed by a limiter. By changing the position of the handlebar, the user's body tilt angle can be further adjusted, thereby improving the applicability of the spinning bike and enhancing the effect of exercise.

[0029] 2. The adjustment component has a simple structure and is easy to operate, so as to facilitate the adjustment of the handlebar position. The production cost is low and the adjustment component is suitable for popularization and use.

[0030] 3. The use function of the dynamic bike has been added. The user can sit upright and ride while exercising the upper body by pulling the handlebars, which improves the overall exercise effect; and after the exercise, the legs can be stretched and relaxed by placing the footrests. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of a spinning bike in the prior art;

[0032] Figure 2 Schematic diagram of the overall structure of the spinning bike in the embodiment of the present application;

[0033] Figure 3 Schematic diagram of the overall structure of the adjustment component in the embodiment of the present application;

[0034] Figure 4 is a schematic diagram of the cross-sectional structure of the adjustment component in the embodiment of the present application;

[0035] Figure 5 This is a schematic diagram of the structure of two adjustment components and a base in an embodiment of the present application;

[0036] Figure 6 yes Figure 5 A magnified schematic diagram of part A in FIG;

[0037] Figure 7 is a partial cross-sectional schematic diagram of an adjustment component in an embodiment of the present application;

[0038] Figure 8 It is a structural schematic diagram of the footboard and the mounting portion in an embodiment of the present application.

[0039] Figures: 1, frame; 11, base; 12, body; 2, seat; 3, handlebar; 4, flywheel; 5, transmission structure; 6, pedal wheel; 7, pedal; 8, adjustment assembly; 81, adjustment tube; 811, fixing hole; 812, slide groove; 82, adjustment plate; 821, clearance hole; 822, first limit block; 823, pulley; 83, adjustment handlebar; 831, mounting portion; 831a, clearance groove; 832, Handlebar part; 833, first mounting block; 834, second mounting block; 835, second spring; 836, pull rope; 837, adjusting bolt; 838, resistance block; 84, limiting member; 841, insertion rod; 841a, limiting groove; 841b, second limiting block; 842, pull plate; 843, first spring; 844, pull ring; 85, footrest; 86, tension spring; 87, limiting plate; 9, adjusting rope; 10, hook. DETAILED DESCRIPTION

[0040] The following is combined with Figure 2-8 This application is further described in detail.

[0041] The embodiment of the present application discloses a spinning bike.

[0042] Reference Figure 2 The spinning bike includes a frame 1, a seat 2, a handlebar 3, a flywheel 4, a transmission structure 5, a pedal wheel 6, and a pedal 7. The frame 1 includes a base 11 and a body 12, and the body 12 is fixedly connected to the upper side of the base 11. The seat 2 and the handlebar 3 are fixedly connected to the body 12, and the flywheel 4 and the pedal wheel 6 are rotatably connected to the body 12. The flywheel 4 and the pedal wheel 6 are connected via a transmission structure 5. The transmission structure 5 is a prior art and will not be described in detail. When riding, the user sits on the seat 2, leans forward at a certain angle, holds the handlebar 3, and steps on the pedal 7 to rotate the pedal wheel 6, which in turn rotates the flywheel 4 under the action of the transmission structure 5 to achieve cycling exercise.

[0043] Reference Figure 2 and Figure 3The spinning bike also includes two adjustment assemblies 8, one located on either side of the bike body 12. Specifically, the adjustment assembly 8 includes an adjustment tube 81, an adjustment plate 82, an adjustment handlebar 83, and a stopper 84. The adjustment tube 81 is a hollow rectangular tube, the length of which is along a first direction. Both ends of the adjustment tube 81 are fixedly connected to the upper side of the base 11. In this embodiment, the first direction is the length of the base 11. The vertical cross-section of the adjustment plate 82 is inverted and concave. The adjustment plate 82 is sleeved on the adjustment tube 81 and slidably connected to the adjustment tube 81 along the first direction. The adjustment handlebar 83 is fixedly connected to the upper side of the adjustment plate 82. A plurality of fixing holes 811 are evenly spaced along the first direction on the side of the adjusting tube 81 close to the vehicle body 12, and a clearance hole 821 is provided on the side of the fixing hole 811 of the adjusting plate 82. A limiting member 84 is provided on the side of the clearance hole 821 of the adjusting plate 82, and the limiting member 84 is inserted into the clearance hole 821 and fixed with the fixing hole 811 to achieve the fixation of the adjusting plate 82 and the adjusting tube 81.

[0044] Reference Figure 3 and Figure 4 Specifically, the limiting member 84 includes an insert rod 841, a pull plate 842 and a first spring 843. One end of the insert rod 841 is passed through the clearance hole 821 and inserted into the fixing hole 811. The pull plate 842 is integrally connected to the other end of the insert rod 841. The first spring 843 is arranged between the adjustment plate 82 and the pull plate 842. One end of the first spring 843 is fixedly connected to one side of the adjustment plate 82, and the other end is fixedly connected to one side of the pull plate 842 to drive the pull plate 842 to move toward the side away from the adjustment plate 82.

[0045] Before riding, the user pulls the pull plate 842 to disengage the insertion rod 841 from the fixing hole 811, slides the adjustment plate 82 to a desired position according to their needs, and then releases the pull plate 842. Under the action of the first spring 843, the pull plate 842 returns to its original position, driving the insertion rod 841 to be inserted into the fixing hole 811 for fixation, thereby adjusting the position of the handlebar 83. During riding, the user sits on the seat 2 and adjusts the body's inclination angle by holding the adjustment handlebar 83, thereby increasing the range of the body's inclination angle, thereby improving the applicability of the spinning bike and enhancing the effect of exercise.

[0046] Reference Figure 4A plurality of first limiting blocks 822 are fixedly connected to the clearance hole 821 at intervals along the second direction at one end close to the first spring 843. In this embodiment, the second direction is the circumferential direction of the clearance hole 821. The insertion rod 841 is provided with a plurality of limiting grooves 841a corresponding to the plurality of first limiting blocks 822 along the second direction, and each first limiting block 822 is limited in each limiting groove 841a. A second limiting block 841b is provided at the end of the limiting groove 841a away from the pull plate 842. The second limiting block 841b is integrally connected to the insertion rod 841, so that the end of the limiting groove 841a is closed. When the insertion rod 841 moves to a certain distance toward the side close to the pull plate 842, the second limiting block 841b abuts against the first limiting block 822, limiting the further movement of the insertion rod 841, thereby minimizing the insertion rod 841 from being separated from the adjustment plate 82.

[0047] Furthermore, a plurality of pulleys 823 are rotatably connected to both inner sides of the adjustment plate 82, and a slide groove 812 is provided on both sides of the adjustment tube 81 along the first direction. The pulleys 823 are embedded in the slide groove 812, and the circumference of the pulley 823 contacts the upper and lower side walls of the adjustment plate 82 located in the slide groove 812, so as to limit the adjustment plate 82 from detaching from the adjustment tube 81 as much as possible.

[0048] Reference Figure 5 and Figure 6 The two pull plates 842 are connected by an adjusting rope 9, which is a steel wire rope with certain strength and flexibility. Hooks 10 are integrally connected to both ends of the adjusting rope 9. Pull rings 844 are fixed on one side of the two pull plates 842 close to each other, and the two hooks 10 are hung downward on the two pull rings 844.

[0049] When the position of the handlebar 83 needs to be adjusted, the adjustment rope 9 is pulled toward the position of the handlebar 83 to be adjusted. Under the action of the adjustment rope 9, the two pull plates 842 move toward each other, causing the two insertion rods 841 to disengage from the fixing holes 811. Under the action of the first limit block 822 and the second limit block 841b, the adjustment rope 9 will drive the two adjustment plates 82 to move. After the adjustment plate 82 reaches the adjustment position, the adjustment rope 9 is released. Under the action of the first spring 843, the pull plate 842 returns to its original position, driving the insertion rod 841 to be inserted into the fixing hole 811 for fixation, thereby achieving synchronous adjustment of the two adjustment assemblies 8, which is convenient and simple to operate.

[0050] Reference Figure 7 The adjustable handlebar includes a mounting portion 831 and a handlebar portion 832. The mounting portion 831 is in the shape of a rectangular tube. The lower end of the mounting portion 831 is fixedly connected to the upper side of the adjustment plate 82, and the upper end is threadedly connected to the lower end of the handlebar portion 832 to facilitate the installation and disassembly of the handlebar portion 832. At the same time, the user can replace the handlebar portion 832 of different shapes according to their own needs, so that the user can better hold the handlebar portion 832 and improve the user experience.

[0051] Furthermore, a first mounting block 833 and a second mounting block 834 are spaced apart within the mounting portion 831. The first mounting block 833 is fixedly connected to the inner side of the mounting portion 831, and the second mounting block 834 is slidably connected within the mounting portion 831, with the first mounting block 833 positioned above the second mounting block 834. Furthermore, a second spring 835 is disposed between the first and second mounting blocks 833, with one end of the second spring 835 fixedly connected to the first mounting block 833 and the other end fixedly connected to the second mounting block 834, thereby urging the second mounting block 834 to move away from the first mounting block 833. A pull rope 836 is fixedly connected to the end of the second mounting block 834 near the first mounting block 833. The pull rope 836 is a steel wire rope, the other end of which passes through the first mounting block 833 and is rotatably connected to the end of the handlebar portion 832 near the mounting portion 831.

[0052] When the user sits on the seat 2, since the handlebar portion 832 is threadedly connected to the mounting portion 831, the user rotates the handlebar portion 832 to separate it from the mounting portion 831, pulls the handlebar portions 832 on both sides, drives the second mounting block 834 to move toward the side close to the first mounting block 833 and squeezes the second spring 835, and then reduces the force pulling the handlebar portion 832. Under the action of the second spring 835, the second mounting block 834 moves toward the side away from the first mounting block 833, drives the handlebar portion 832 to move toward the side close to the mounting portion 831, and repeatedly pulls the handlebar portion 832 back and forth to achieve exercise for the user's upper body, thereby increasing the use function of the spinning bike and improving the overall exercise effect.

[0053] Furthermore, an adjusting bolt 837 is threadedly connected to one side of the second mounting block 834, and a clearance groove 831a is provided on the mounting portion 831 for the adjusting bolt 837 to pass through. A resistance block 838 is fixedly connected to the adjusting bolt 837. The resistance block 838 is a rubber block, and the resistance block 838 abuts against the outer side of the mounting portion 831. By rotating the adjusting bolt 837, the resistance block 838 is moved closer to or away from the mounting portion 831, thereby increasing or reducing the friction force of the sliding of the second mounting block 834 to suit people of different strength.

[0054] Reference Figure 2 and Figure 8The mounting portion 831 is rotatably connected to a footrest 85 on the side away from the vehicle body 12. The footrest 85 is in the shape of a rectangular plate with both sides extending upward. A tension spring 86 is provided on the mounting portion 831. One end of the tension spring 86 is connected to the mounting portion 831, and the other end is connected to the footrest 85, so as to drive the footrest 85 to rotate toward the side closer to the seat 2. When the footrest 85 is in the initial state, the footrest 85 is set vertically. After the user completes the exercise, they can step on the footrest 85 to drive the footrest 85 to rotate, and then step on the footrest 85 to stretch and relax their legs. In addition, a limit plate 87 is provided on the mounting portion 831. When the footrest 85 rotates to a certain angle, the footrest 85 abuts against the limit plate 87 to limit further rotation, thereby minimizing the risk of injury caused by excessive rotation when the user steps on the footrest, thereby improving the safety of the exercise bike. The limiting plate 87 is fixedly connected to the mounting portion 831 by bolts to adjust the angle of the limiting plate 87, thereby adjusting the maximum rotation angle of the footrest 85 to suit different users.

[0055] The working principle of this embodiment is as follows: before riding, the user pulls the pull plate 842 to disengage the insertion rod 841 from the fixing hole 811, slides the adjustment plate 82 to a desired position according to their needs, and then releases the pull plate 842. Under the action of the first spring 843, the pull plate 842 returns to its original position, driving the insertion rod 841 to be inserted into the fixing hole 811 for fixation, thereby adjusting the position of the handlebar 83. During riding, the user sits on the seat 2 and adjusts the body's tilt angle by holding the adjustment handlebar 83, thereby increasing the range of body tilt angles, thereby improving the applicability of the spinning bike and enhancing the effectiveness of the exercise. Furthermore, after the handlebar portion 832 is separated from the mounting portion 831, repeatedly pulling the handlebar portion 832 back and forth exercises the user's upper body, improving the overall exercise effect. The footrest 85 allows the legs to stretch and rest after riding, thereby increasing the usability of the spinning bike.

[0056] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A spinning bike, characterized by: The invention comprises a frame (1), a seat (2), a handlebar (3) and two adjustment assemblies (8), wherein the two adjustment assemblies (8) are respectively arranged on both sides of the frame (1), and the adjustment assembly (8) comprises an adjustment tube (81), an adjustment plate (82), an adjustment handlebar (83) and a limiting member (84). The length direction of the adjustment tube (81) is arranged along a first direction, the adjustment tube (81) is provided with a plurality of fixing holes (811) spaced apart along the first direction, the adjustment plate (82) is connected to the adjustment tube (81) in a sliding manner along the first direction, a clearance hole (821) is provided on the adjustment plate (82), the adjustment handlebar (83) is arranged on the adjustment plate (82), the limiting member (84) is arranged on one side of the adjustment plate (82), and the limiting member (84) is passed through the clearance hole (821) and is plugged and fixed with the fixing hole (811); The adjustable handlebar (83) comprises a mounting portion (831) and a handlebar portion (832), wherein one end of the mounting portion (831) is fixedly connected to the adjustment plate (82), and the other end is threadedly connected to the handlebar portion (832); The mounting portion (831) is fixedly connected to a first mounting block (833) and slidably connected to a second mounting block (834); a second spring (835) is provided between the first mounting block (833) and the second mounting block (834); a pull rope (836) is provided on a side of the second mounting block (834) close to the first mounting block (833); the other end of the pull rope (836) is rotatably connected to an end of the handlebar portion (832) close to the mounting portion (831); One side of the second mounting block (834) is threadedly connected to an adjusting bolt (837), and a resistance block (838) is provided on the adjusting bolt (837). The resistance block (838) abuts against the mounting portion (831), and the mounting portion (831) is provided with a clearance groove (831a) for the adjusting bolt (837) to pass through.

2. The spinning bike according to claim 1, characterized in that: The limiting member (84) includes an insert rod (841), a pull plate (842) and a first spring (843); the insert rod (841) is passed through the clearance hole (821) and plugged into the fixing hole (811); the pull plate (842) is fixedly connected to the end of the insert rod (841) away from the fixing hole (811); the first spring (843) is arranged between the adjustment plate (82) and the pull plate (842) and drives the pull plate (842) to move toward the side away from the adjustment plate (82).

3. The spinning bike according to claim 2, characterized in that: The fixing hole (811) is located on a side of the adjustment tube (81) close to the vehicle frame (1), and the two pull plates (842) are connected via an adjustment rope (9).

4. The spinning bike according to claim 2, characterized in that: The clearance hole (821) is provided with a plurality of first limiting blocks (822) spaced apart along the second direction near one end of the first spring (843); the insertion rod (841) is provided with a plurality of limiting grooves (841a) spaced apart along the second direction; the first limiting block (822) is limited in the limiting groove (841a); the limiting groove (841a) is provided with a second limiting block (841b) at one end away from the pulling plate (842); the second limiting block (841b) is used to abut against the first limiting block (822).

5. The spinning bike according to claim 2, characterized in that: Both inner sides of the adjustment plate (82) are rotatably connected to pulleys (823), and both sides of the adjustment tube (81) are provided with sliding grooves (812), and the length direction of the sliding grooves (812) is arranged along the first direction. The pulleys (823) are embedded in the sliding grooves (812) and contact the adjustment tube (81).

6. The spinning bike according to claim 1, characterized in that: The adjusting handlebar (83) is rotatably connected to a footrest plate (85) away from a side of the frame (1); a tension spring (86) is provided on the adjusting handlebar (83); and the tension spring (86) drives the footrest plate (85) to rotate toward a side close to the seat (2).

7. The spinning bike according to claim 6, characterized in that: A limit plate (87) is provided on the regulating handlebar (83), and the limit plate (87) is used to limit the rotation angle of the footrest plate (85).

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