A foot-operated front and rear segmented linkage brake system

Abstract

This invention discloses a foot-operated front and rear segmented linkage braking system, including a front hydraulic brake, a rear brake, and a foot pedal body. The foot pedal body is rotatably connected to the frame, and a staged resistance component is installed between the foot pedal body and the frame. The staged resistance component is used to distinguish the triggering timing of the front hydraulic brake and the rear brake. Under normal circumstances, the braking method can achieve the effect of slowing down the driving speed without producing a large impact, making the braking smoother and more comfortable. In addition, the larger resistance indicates the position of the foot pedal body to the driver. In an emergency, force is applied to the foot pedal body to move it into the rear segment range for combined braking of the rear and front wheels, realizing emergency braking and meeting the safety requirements of sudden situations.

Description

Technical Field

[0001] This invention belongs to the field of braking system technology, specifically a foot-operated front and rear segmented linkage braking system. Background Technology

[0002] Motorcycle braking methods have greatly improved with technological advancements, evolving from separate braking of the front and rear wheels to the now prevalent combined braking of the front and rear wheels. This provides more options for modern motorcycles. For example, the publicly available technical document "CN 110040205 B, A combined braking system for front and rear wheels of a motorcycle" allows the driver to apply combined braking to the front and rear wheels simultaneously, sequentially, or sequentially by pressing the pedals. This is achieved by changing the driving force values ​​of the first return spring 607 and the brake arm 8. In other words, when installed on a motorcycle, only one braking method can be selected, rather than being interchangeable.

[0003] This application improves the combined braking method of front and rear wheels followed by the front wheels. According to the above technical solution, although the braking method of front and rear wheels followed by the front wheels can be achieved, the buffer time between the two is short, and the driver cannot feel it at all in actual operation. Moreover, although the combined braking method will greatly reduce the braking distance, which is beneficial for dealing with emergencies, it will reduce the coasting distance in daily situations. In addition, frequent braking is required during driving, and the driver will feel a large impact at the moment of braking, which will be very uncomfortable. Summary of the Invention

[0004] The purpose of this invention is to provide a foot-operated front and rear segmented linkage braking system to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A foot-operated front and rear segmented linkage braking system includes a front hydraulic brake, a rear brake, and a foot pedal body;

[0007] The pedal body is rotatably connected to the frame, and a stage resistance component is installed between the pedal body and the frame. The stage resistance component is used to distinguish the triggering timing of the front hydraulic brake and the rear brake.

[0008] The brake end of the front hydraulic brake is installed at the front wheel, the trigger end is connected to the brake handle, and there is a time-delayed triggering gap between the brake handle and the trigger end. The brake handle is connected to the connector one via a cable, and the connector one is rotatably connected to the pedal body.

[0009] The rear brake is installed at the rear wheel and connected to one end of a connecting rod, the other end of which is rotatably connected to the pedal body.

[0010] In a further technical solution, the stage resistance component includes an outer cover, which is fixed on the frame and has a movable groove for accommodating a movable block, which is fixed on the pedal body.

[0011] The movable block is rotatably connected with a number of protruding teeth in the circumferential direction, and has a groove for accommodating the protruding teeth. A torsion spring is provided at the rotatable connection point, and the torsion spring is used to prevent the protruding teeth from rotating into the groove.

[0012] The inner wall of the outer cover is rotatably connected with a plurality of protruding teeth II in the circumferential direction, and a groove II is provided for accommodating the protruding teeth II. A torsion spring II is provided at the rotatable connection, and the torsion spring II is used for resetting the protruding teeth II.

[0013] The first and second protruding teeth are staggered, have a movable distance, and rotate in opposite directions.

[0014] In a further technical solution, the distance between the first convex tooth and the second convex tooth is equal to the distance of the moving gap between the trigger end of the front hydraulic brake and the brake handle.

[0015] In a further technical solution, the stage resistance component includes an outer cover, which is fixed on the frame and has a movable groove for accommodating a movable block, which is fixed on the pedal body.

[0016] The movable block is rotatably connected with a number of protruding teeth in the circumferential direction, and has a groove for accommodating the protruding teeth. A torsion spring is provided at the rotatable connection point, and the torsion spring is used to prevent the protruding teeth from rotating into the groove.

[0017] The inner wall of the outer cover is provided with a number of arc-shaped protrusions at intervals, and the protruding tooth is placed between adjacent arc-shaped protrusions.

[0018] In a further technical solution, the distance between the first convex tooth and the subsequent arc-shaped protrusion is equal to the distance of the movable gap between the trigger end of the front hydraulic brake and the brake handle.

[0019] A further technical solution is that the outer cover has an arc-shaped notch for the pedal body to pass through, and a notch for limiting the range of motion of the pedal body.

[0020] A further technical solution includes a connecting rod, one end of which is fixedly provided with a pedal, and the other end of which is provided with a connecting shaft. The connecting shaft is fixedly connected to a movable block and rotatably connected to the frame through the outer cover. A connecting plate is also provided on the connecting shaft, and one end of the connecting rod is rotatably connected to the connecting plate. A second connecting plate is provided on the connecting rod and rotatably connected to the connecting piece.

[0021] In a further technical solution, the front hydraulic brake includes a front braking assembly, which is connected to a hydraulic drive unit via an oil pipe. The hydraulic drive unit is connected to a piston assembly, and the piston assembly has a flange on its outer periphery.

[0022] The piston assembly has a movable cylinder on its outer periphery. The movable cylinder can abut against the piston assembly at its inner end, pushing the piston assembly to move inward. The inner wall of the movable cylinder has a second flange, which can abut against the first flange to pull the piston assembly. A linkage block is located at the outer end of the movable cylinder. The linkage block has a slot, and the linkage end of the brake handle is rotatably connected to the slot of the linkage block.

[0023] In a further technical solution, the brake handle includes a bracket, which is rotatably connected to the handle body and the movable part respectively via the same rotating shaft. The movable part is provided with a return torsion spring three at the rotatable connection point, and an abutment block is provided on the movable part for pushing the handle body to return to its original position.

[0024] The linkage end is located on the movable part, and the movable part is rotatably connected to the second connector, which is connected to the cable.

[0025] The beneficial effects of this invention are:

[0026] This invention distinguishes between the braking method used in daily driving and the emergency braking method through a staged resistance component, so as to achieve the effect of delayed combined braking. Under normal circumstances, the braking method can reduce the driving speed without producing a large impact, making the braking smoother and more comfortable. The larger resistance indicates the position of the pedal body to the driver. In an emergency, force is applied to the pedal body to move it into the later stage range for combined braking of the rear and front wheels, realizing emergency braking and meeting the safety requirements of sudden situations.

[0027] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0028] Figure 1 : A three-dimensional structural diagram of the present invention.

[0029] Figure 2 : Structural diagram of the stage resistance component of the present invention, embodiment one.

[0030] Figure 3 Schematic diagram of the process of Embodiment 1 of the stage resistance component of the present invention Figure 1 .

[0031] Figure 4 Schematic diagram of the process of Embodiment 1 of the stage resistance component of the present invention Figure 2 .

[0032] Figure 5 : Structural diagram of the stage resistance component of the present invention, embodiment two.

[0033] Figure 6 : A diagram of the front hydraulic brake of the present invention.

[0034] Figure 7 : Structural diagram of the hydraulic drive component and brake handle of the present invention.

[0035] Figure 8 : Structural diagram of the piston assembly and movable cylinder of the present invention.

[0036] Reference numerals: 11-Frame, 12-Brake lever, 121-Bracket, 122-Lever body, 123-Moving part, 124-Abutting block, 125-Linking end, 126-Connector II, 2-Front hydraulic brake, 21-Front brake assembly, 22-Oil pipe, 23-Hydraulic drive component, 241-Piston assembly, 242-Flange I, 243-Moving cylinder, 244-Flange II, 245-Linking block, 246-Slot hole, 25-Cable, 26-Connector Component 1, 31-Rear Brake, 32-Linkage, 4-Foot Pedal Body, 41-Connecting Rod, 42-Pedal, 43-Connecting Shaft, 44-Connecting Plate 1, 45-Connecting Plate 2, 5-Stage Resistance Assembly, 511-Outer Cover, 512-Moving Groove, 513-Protruding Tooth 2, 514-Groove 2, 515-Torsion Spring 2, 516-Arc-shaped Protrusion, 517-Arc-shaped Notch, 521-Moving Block, 522-Protruding Tooth 1, 523-Groove 1, 524-Torsion Spring 1. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0038] Please refer to Figure 1-8 ;

[0039] The braking system described in this invention also adopts a combined braking system, but has obvious starting conditions, improving driving comfort. Specifically, it includes a front hydraulic brake 2, a rear brake 31, and a foot pedal body 4. In this embodiment, the rear brake 31 is generally a drum brake, which is braked and released by pulling or loosening the connecting rod 32. Of course, it can also be a hydraulic braking method, which is braked and released by squeezing or pulling the piston through the connecting rod 32. Therefore, the specific type is not limited here. In addition, the drum brake structure is already very mature in the prior art. Since no structural improvements have been made, the specific structure can refer to the implementation of the prior art, and will not be described in detail here.

[0040] The pedal body 4 is rotatably connected to the frame 11, and a stage resistance component 5 is installed between the pedal body 4 and the frame 11. The braking end of the front hydraulic brake 2 is installed at the front wheel, and the trigger end is connected to the brake lever 12. There is a time-delayed triggering gap between the brake lever 12 and the trigger end. The brake lever 12 is connected to the connector 26 via a cable 25. The connector 26 is rotatably connected to the pedal body 4. It should be noted that the front hydraulic brake 2 includes a front brake assembly 21. The front brake assembly 21 is connected to the hydraulic drive component 23 via an oil pipe 22. The hydraulic drive component 23 is connected to a piston assembly 241. The front brake assembly 21 is the braking end, and the hydraulic drive component 23 and the piston assembly 241 are combined to form the trigger end. In addition, a guide tube is fixed on the frame 11, and the cable 25 passes through the guide tube to limit its position. The rear brake 31 is installed at the rear wheel and connected to one end of the connecting rod 32. The other end of the connecting rod 32 is rotatably connected to the pedal body 4.

[0041] In daily driving, short-term braking is frequent, and the goal is simply to reduce the speed. However, it is difficult to define the effect of "braking without over-braking". Although "over-braking" can quickly slow down the vehicle, it not only causes discomfort to the driver but also affects the speed increase after braking. According to the existing technology "CN110040205 B, a combined motorcycle front and rear wheel combined braking system", although it can achieve the effect of reducing the speed, although the braking wheels can be in sequence, it is entirely controlled by the driver's pedal 42. Basically, both the front and rear wheels are involved in each braking.

[0042] In this embodiment, the stage resistance component 5 is used to distinguish the triggering timing of the front hydraulic brake 2 and the rear brake 31. When braking is required during driving, the driver presses the foot pedal body 4, which rotates and pulls the connecting rod 32 and the cable 25. At this time, the rear brake 31 starts to brake the rear wheel. At the same time, the brake lever 12 will also shift. However, since there is a delayed triggering gap between the brake lever 12 and the triggering end, although the brake lever 12 shifts during this process, it will not trigger the front wheel braking, but only shifts towards the triggering end.

[0043] The stage resistance component 5 provides the range of motion for the front and rear sections of the pedal body 4. The above refers to the range of motion for the front section of the pedal body 4. Controlling the rotation angle of the pedal body 4 within the range of motion for the front section controls the braking intensity of the rear brake 31, thus meeting the need to slow down the driving speed in daily life.

[0044] Normally, the rear brake 31 can be triggered by lightly pressing the pedal body 4 in the initial range. Of course, as the braking effect of the rear brake 31 increases, the resistance encountered by the pedal body 4 will gradually increase, which can directly provide feedback to the driver, allowing the driver to adjust according to the actual road conditions.

[0045] When the pedal body 4 rotates to a certain angle, it will encounter greater resistance. This resistance comes from the stage resistance component 5, which prevents the pedal body 4 from rotating further. This resistance is not insurmountable. By applying a greater force to the pedal body 4, which is different from the force used in the first stage of braking, this resistance can be overcome and the pedal body 4 can be moved into the later stage. This resistance is not only used to remind the driver, but also to prevent the combined braking from being triggered in non-emergency situations.

[0046] When the foot pedal body 4 rotates to a certain angle and enters the rear range, while keeping the rear brake 31 activated, the brake lever 12 will shift to a larger angle and contact the trigger end of the front hydraulic brake 2, thereby braking the front wheels. Under the braking of the rear and front wheels, the vehicle can quickly reduce its speed and achieve the effect of emergency braking.

[0047] When the force applied to the pedal body 4 disappears, the pedal body 4 can rotate to reset. Specifically, the reset method can be that the rear brake 31 resets and pulls the linkage 32, thereby linking the pedal body 4 to reset. Alternatively, a reset spring or torsion spring can be provided between the pedal body 4 and the frame 11 bracket 121, which can make the pedal body 4 rotate in the opposite direction to reset. During the reset process, the stage resistance component 5 will also reset and will not generate much resistance, so that the reset of the pedal body 4 is not affected.

[0048] In addition, the brake lever 12 can independently control the front hydraulic brake 2, so that the front wheel can be braked without being affected by the foot pedal body 4. Of course, the front hydraulic brake 2 also needs to go through a movement gap when it is triggered.

[0049] This invention distinguishes between the braking mode used in daily driving and the emergency braking mode through the stage resistance component 5, so as to achieve the effect of delayed combined braking. Under normal circumstances, the braking mode can reduce the driving speed without producing a large impact, making the braking smoother and more comfortable. The larger resistance indicates the position of the foot pedal body 4. In an emergency, force is applied to the foot pedal body 4 to make it enter the later stage range for combined braking of the rear and front wheels, realizing emergency braking and meeting the safety requirements of sudden situations.

[0050] One embodiment of the present invention relating to the stage resistance component 5, see reference to Figures 2-4Specifically, it includes an outer cover 511, which is fixed on the frame 11. The outer cover 511 has a movable groove 512 for accommodating the movable block 521. Preferably, the outer cover 511 is in the shape of a disc, and the movable groove 512 is circular. The movable block 521 is fixed on the pedal body 4. The movable block 521 is rotatably connected with a plurality of protruding teeth 522 in the circumferential direction, and has a groove 523 for accommodating the protruding teeth 522. A torsion spring 524 is provided at the rotatable connection. The inner wall of the outer cover 511 is rotatably connected with a plurality of protruding teeth 513 in the circumferential direction, and has a groove 514 for accommodating the protruding teeth 513. A torsion spring 515 is provided at the rotatable connection.

[0051] In the initial state, one of the protruding teeth 522 is close to the preceding protruding tooth 513 and has a distance from the following protruding tooth 513. This distance is the movement distance of the front part of the pedal body 4. Normally, pressure is applied to the pedal body 4 to make it rotate. At this time, the protruding tooth 522 moves from the position of the preceding protruding tooth 513 to the position of the following protruding tooth 513 until the protruding tooth 522 and the following protruding tooth 513 come into contact. Since the rotation directions of the protruding teeth 522 and the following protruding tooth 513 are opposite, after the protruding tooth 522 comes into contact with the following protruding tooth 513, the protruding tooth 522... 513 will not rotate. Instead, it is necessary to overcome the torque of the torsion spring 524 to make the protrusion 522 rotate into the groove 523. Since there are several protrusions 522, there are also several torsion springs 524. In this embodiment, the torque of the torsion spring 524 is relatively large. Together, they form a large resistance that hinders the rotation of the movable block 521. It is necessary to overcome these resistances to make the protrusion enter the groove 523 so that the movable block 521 can continue to rotate, that is, enter the combined braking mode of the later stage. After crossing the protrusion 513, the protrusion 522 rotates and resets under the action of the torsion spring 524.

[0052] During the braking process of the pedal body 4 resetting, the movable block 521 will rotate in the opposite direction. At this time, the first tooth 522 will abut against the rear side of the previously contacted second tooth 513. Since the rotation directions of the first tooth 522 and the second tooth 513 are opposite, the first tooth 522 abuts against the rear side of the second tooth 513 during this process, but the first tooth 522 will not rotate. Instead, the second tooth 513 will rotate into the second groove 514 to form a clearance for the first tooth 522 to pass through. In this embodiment, the torque of the second torsion spring 515 is small and is only used for the resetting of the second tooth 513. Therefore, the second tooth 513 will not generate much resistance to prevent the movable block 521 from rotating in the opposite direction to reset. After the first tooth 522 crosses the second tooth 513 in the opposite direction, the second tooth 513 rotates to reset under the action of the second torsion spring 515.

[0053] Preferably, the distance between the first tooth 522 and the next tooth 513 is equal to the distance of the movable gap between the trigger end of the front hydraulic brake 2 and the brake handle 12, so that the front hydraulic brake 2 can be triggered after the first tooth 522 crosses the second tooth 513.

[0054] Another embodiment of the present invention relating to the stage resistance component 5, see below. Figure 5 Specifically, it includes an outer cover 511, which is fixed on the frame 11. The outer cover 511 has a movable groove 512 for accommodating a movable block 521, which is fixed on the pedal body 4. The movable block 521 is rotatably connected to a plurality of protruding teeth 522 in the circumferential direction, and has a groove 523 for accommodating the protruding teeth 522. A torsion spring 524 is provided at the rotatable connection. The inner wall of the outer cover 511 is provided with a plurality of arc-shaped protrusions 516 at intervals, and the protruding teeth 522 are placed between adjacent arc-shaped protrusions 516.

[0055] In the initial state, one of the protruding teeth 522 is close to the end of the preceding arc-shaped protrusion 516 and has a distance from the following arc-shaped protrusion 516. This distance is the movement distance of the front part of the pedal body 4. Normally, applying pressure to the pedal body 4 causes the movable block 521 to rotate. At this time, the protruding tooth 522 moves from the position of the preceding arc-shaped protrusion 516 to the position of the following arc-shaped protrusion 516 until the protruding tooth 522 abuts against the end of the following arc-shaped protrusion 516. Under the action of several torsion springs 524, a large torque is generated, preventing the movable block 521 from rotating. It is necessary to overcome the torsion springs. Only a torque of 524 is needed to make the protrusion 522 rotate into the groove 523, and then the movable block 521 can rotate. In this embodiment, the torque of the torsion spring 524 is relatively large, which together form a large resistance that hinders the rotation of the movable block 521. It is necessary to overcome these resistances to make the protrusion enter the groove 523 so that the movable block 521 can continue to rotate, that is, enter the combined braking mode of the later stage. After the protrusion 522 continues to rotate with the movable block 521 in the retracted state, the protrusion 522 cannot be reset due to the obstruction of the arc protrusion 516, and at the same time, it will not hinder the continued rotation of the movable block 521.

[0056] During the braking process of the pedal body 4 resetting, the movable block 521 will rotate in the opposite direction. At this time, the tooth 522 slides in the opposite direction along the end face of the arc-shaped protrusion 516 with a retractable rotation. After the tooth 522 disengages from the arc-shaped protrusion 516, it rotates and resets under the action of the torsion spring 524, and is then placed between two adjacent arc-shaped protrusions 516.

[0057] Preferably, the distance between the first tooth 522 and the rear arc-shaped protrusion 516 is equal to the distance of the movable gap between the trigger end of the front hydraulic brake 2 and the brake handle 12. Furthermore, in the initial state, the first tooth 522 abuts against the rear end of the front arc-shaped protrusion 516. Since the first tooth 522 will not rotate in the opposite direction, it will prevent the movable block 521 from continuing to rotate, thus forming a reset limit on the foot pedal body 4.

[0058] Based on the above two methods, the outer cover 511 is provided with an arc-shaped notch 517 for the pedal body 4 to pass through, and for limiting the range of motion of the pedal body 4.

[0059] One embodiment of the present invention regarding the pedal body 4 specifically includes a connecting rod 41, one end of which is fixedly provided with a pedal 42, and the other end of which is provided with a connecting shaft 43. The connecting shaft 43 is fixedly connected to the movable block 521 and rotatably connected to the frame 11. More specifically, the connecting shaft 43 passes through the outer cover 511 and is rotatably connected to the frame 11. A connecting plate 44 is also provided on the connecting shaft 43. One end of the connecting rod 32 is rotatably connected to the connecting plate 44. A connecting plate 45 is provided on the connecting rod 41 and is rotatably connected to the connecting member 26.

[0060] The present invention will describe an embodiment of the front hydraulic brake 2, referring to... Figures 6-8 Specifically, it includes a front brake assembly 21, which is connected to a hydraulic drive unit 23 via an oil pipe 22. The hydraulic drive unit 23 is connected to a piston assembly 241, which stores hydraulic oil. The action of the piston assembly 241 drives the flow of hydraulic oil to achieve the action of the front brake assembly 21. The above structure can be referred to the implementation of hydraulic braking in the prior art.

[0061] In this embodiment, the piston assembly 241 has a flange 242 on its outer periphery, and the movable cylinder 243 is sleeved on the outer periphery of the piston assembly 241. A flange 244 is provided in the movable cylinder 243. The end of the piston assembly 241 and the end of the inner cavity of the movable cylinder 243 have a certain movable distance. This movable distance is the movable gap mentioned in the above embodiment. Within this movable distance, the movable cylinder 243 can move relative to the piston assembly 241. A linkage block 245 is provided at the outer wall end of the movable cylinder 243. A slot 246 is provided in the linkage block 245. The linkage end 125 of the brake handle 12 is rotatably connected to the slot 246 of the linkage block 245. The slot 246 provides a space for the brake handle 12 to rotate.

[0062] In the initial state, flange 244 is located at the front end of flange 242 and is in contact with it; when the foot pedal body 4 is stepped on, the rear brake 31 is activated to brake the rear wheel, and at the same time, the cable 25 is pulled to shift the brake handle 12 and push the movable cylinder 243 to move relative to the piston assembly 241. During this process, flange 244 moves away from flange 242, and at the same time, the inner end of the movable cylinder 243 moves closer to the end of the piston assembly 241, but the piston assembly 241 does not move, so the front wheel does not start to brake. This is a delayed combined braking method.

[0063] Further pressure is applied to the pedal body 4, increasing the rotation angle of the pedal body 4 and continuously pulling the cable 25, causing the brake handle 12 to deflect at a larger angle, and continuing to push the movable cylinder 243 to move, so that the inner end of the movable cylinder 243 abuts against the end of the piston assembly 241, and pushes the piston assembly 241 inward during the continuous displacement, thereby triggering the front wheel brake and achieving the effect of combined front and rear braking.

[0064] When it is necessary to release the combined brake, the foot pedal body 4 is released, and at the same time the brake handle 12 is rotated to reset and pull out the movable cylinder 243. The movable cylinder 243 abuts against the flange 242 through the second flange 244. At the same time the movable cylinder 243 is pulled out, the piston assembly 241 is pulled outward, that is, the front wheel brake and the combined brake are released.

[0065] It should be noted that the side wall of the movable cylinder 243 should be provided with a vent hole, which is connected to its inner cavity for gas exchange to avoid the formation of negative pressure.

[0066] In this embodiment, the brake lever 12 can be activated by a pressing method or a traditional rotary method. The pressing method is much simpler, requiring only the movement of the movable cylinder 243 by pushing it in a button-like manner, and releasing the button resets it. The rotary method is similar to the handlebars of the prior art, including a bracket 121, which is installed at the grip of the frame 11. The bracket 121 is rotatably connected to the handlebar body 122 and the movable part 123 via the same pivot. The movable part 123 is provided with a reset torsion spring three at the rotatable connection, and an abutment block 124 is provided on the movable part 123 for pushing the handlebar body 122 to reset. The linkage end 125 is provided on the movable part 123, and the movable part 123 is rotatably connected to a connecting member two 126. The connecting member two 126 is connected to the cable 25. The cable 25 pulls the movable part 123, which is unrelated to the handlebar body 122. However, when the front wheel brake is used alone, by shifting the handlebar body 122, the movable part 123 will be shifted, thereby pushing the movable cylinder 243.

[0067] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0068] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A foot-operated front and rear segmented linkage braking system, comprising a front hydraulic brake (2), a rear brake (31), and a foot pedal body (4), characterized in that: The pedal body (4) is rotatably connected to the frame (11), and a stage resistance assembly (5) is installed between the pedal body (4) and the frame (11). The stage resistance assembly (5) is used to distinguish the triggering timing of the front hydraulic brake (2) and the rear brake (31). The stage resistance assembly (5) includes an outer cover (511), which is fixed on the frame (11). The outer cover (511) has a movable groove (512) for accommodating a movable block (521), which is fixed on the pedal body (4). The movable block (521) is rotatably connected with a plurality of protruding teeth (522) in the circumferential direction, and has a groove (523) for accommodating the protruding teeth (522). A torsion spring (524) is provided at the rotatable connection point. The torsion spring (524) is used to prevent the protruding teeth (522) from rotating into the groove (523). The inner wall of the outer cover (511) is rotatably connected with a plurality of protruding teeth (513) in the circumferential direction, and a groove (514) is provided for accommodating the protruding teeth (513). A torsion spring (515) is provided at the rotatable connection, and the torsion spring (515) is used to reset the protruding teeth (513). The first protrusion (522) and the second protrusion (513) are staggered, have a movable distance, and rotate in opposite directions; The braking end of the front hydraulic brake (2) is installed at the front wheel, the trigger end is connected to the brake handle (12), and there is a time-delayed triggering gap between the brake handle (12) and the trigger end. The brake handle (12) is connected to the first connector (26) via a cable (25), and the first connector (26) is rotatably connected to the pedal body (4). The rear brake (31) is installed at the rear wheel and connected to one end of the connecting rod (32), the other end of which is rotatably connected to the pedal body (4).

2. The foot-operated front and rear segmented linkage braking system according to claim 1, characterized in that: The distance between the first protrusion (522) and the second protrusion (513) is equal to the distance of the movable gap between the trigger end of the front hydraulic brake (2) and the brake handle (12).

3. A foot-operated front and rear segmented linkage braking system, characterized in that: Including a front hydraulic brake (2), a rear brake (31), and a foot pedal body (4), characterized in that: The pedal body (4) is rotatably connected to the frame (11), and a stage resistance assembly (5) is installed between the pedal body (4) and the frame (11). The stage resistance assembly (5) is used to distinguish the triggering timing of the front hydraulic brake (2) and the rear brake (31). The stage resistance assembly (5) includes an outer cover (511), which is fixed on the frame (11). The outer cover (511) has a movable groove (512) for accommodating a movable block (521), which is fixed on the pedal body (4). The movable block (521) is rotatably connected with a plurality of protruding teeth (522) in the circumferential direction, and has a groove (523) for accommodating the protruding teeth (522). A torsion spring (524) is provided at the rotatable connection point. The torsion spring (524) is used to prevent the protruding teeth (522) from rotating into the groove (523). The inner wall of the outer cover (511) is provided with a plurality of arc-shaped protrusions (516) spaced apart, and the first protrusion (522) is placed between adjacent arc-shaped protrusions (516); The braking end of the front hydraulic brake (2) is installed at the front wheel, the trigger end is connected to the brake handle (12), and there is a time-delayed triggering gap between the brake handle (12) and the trigger end. The brake handle (12) is connected to the first connector (26) via a cable (25), and the first connector (26) is rotatably connected to the pedal body (4). The rear brake (31) is installed at the rear wheel and connected to one end of the connecting rod (32), the other end of which is rotatably connected to the pedal body (4).

4. A foot-operated front and rear segmented linkage braking system according to claim 3, characterized in that: The distance between the first protrusion (522) and the second arc-shaped protrusion (516) is equal to the distance of the moving gap between the trigger end of the front hydraulic brake (2) and the brake handle (12).

5. A foot-operated front and rear segmented linkage braking system according to claim 1 or 3, characterized in that: The outer cover (511) has an arc-shaped notch (517) for the pedal body (4) to pass through, and for limiting the range of motion of the pedal body (4).

6. A foot-operated front and rear segmented linkage braking system according to claim 1 or 3, characterized in that: The foot pedal body (4) includes a connecting rod (41), one end of which is fixedly provided with a pedal (42), and the other end of which is provided with a connecting shaft (43). The connecting shaft (43) is fixedly connected to the movable block (521) and rotatably connected to the frame (11) through the outer cover (511). A connecting plate (44) is also provided on the connecting shaft (43). One end of the connecting rod (32) is rotatably connected to the connecting plate (44). A connecting plate (45) is provided on the connecting rod (41), and the connecting plate (45) is rotatably connected to the connecting piece (26).

7. A foot-operated front and rear segmented linkage braking system according to claim 1 or 3, characterized in that: The front hydraulic brake (2) includes a front brake assembly (21), which is connected to a hydraulic drive unit (23) via an oil pipe (22). The hydraulic drive unit (23) is connected to a piston assembly (241), and the piston assembly (241) has a flange (242) on its outer periphery. The piston assembly (241) is provided with a movable cylinder (243) on its outer periphery. The inner end of the movable cylinder (243) can abut against the piston assembly (241) and push the piston assembly (241) to move inward. The inner wall of the movable cylinder (243) is provided with a second flange (244). The second flange (244) can abut against the first flange (242) to pull the piston assembly (241). A linkage block (245) is provided at the outer end of the movable cylinder (243). The linkage block (245) is provided with a slot (246). The linkage end (125) of the brake handle (12) is rotatably connected to the slot (246) of the linkage block (245).

8. A foot-operated front and rear segmented linkage braking system according to claim 7, characterized in that: The brake handle (12) includes a bracket (121), which is rotatably connected to the handle body (122) and the movable part (123) respectively via the same rotating shaft. The movable part (123) is provided with a reset torsion spring at the rotatable connection and an abutment block (124) is provided on the movable part (123) for pushing the handle body (122) to reset. The linkage end (125) is located on the movable part (123), and the movable part (123) is rotatably connected to the connecting part two (126), which is connected to the cable (25).

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