CN209833889U - linkage brake system - Google Patents

Abstract

The utility model relates to a linkage brake system, comprising a first brake operating device, a second brake operating device, a third brake operating device, a first brake generating device, a second brake generating device and a brake wire. The brake wire includes an inner wire and a set of first bushing and a second bushing arranged on the inner wire, the inner wire is connected to the first rocker arm and the second rocker arm, the first bushing is connected to the first cylinder body and the second seat surface, The second casing connects the first seating surface and the second cylinder body. Wherein, when the third operating lever moves, the relative distance between the first seating surface and the second seating surface increases, forcing the inner cable to respectively pull the first rocker arm and the second rocker arm to achieve the effect of interlocking braking. The linked brake system of the utility model has the advantages of low cost and small space occupation, and can effectively optimize the design of the car, and improve the cost performance and competitiveness of the product.

Description

linkage brake system

technical field

The utility model relates to a linkage braking system, in particular to a linkage braking system suitable for vehicles.

Background technique

Vehicles equipped with a linkage brake system have become the current trend, and related technologies have been disclosed, such as a linkage brake design disclosed in Taiwan Patent No. I554434, which allows the rider to use his right hand Control the front wheel brake, the left hand controls the rear wheel brake, and the right foot must be able to control the front wheel and rear wheel brake at the same time.

However, in the above-mentioned existing prior design, the operating force distribution part and its internal timing adjustment part have relatively high complexity in terms of mechanism design and interlocking relationship between various components, and this design lacks convenience. Assemblability and simple mechanism components, so it takes more time to assemble in the assembly process, and the cost is higher and may not have better linkage conversion performance.

Because of this, the inventor, based on the spirit of active invention, thought hard about a kind of linkage brake system that can solve the above problems, and finally completed the utility model after several researches and experiments.

Utility model content

The main purpose of the present utility model is to provide a linkage brake system, in addition to stepping on the third brake operating device, the linkage brake system can simultaneously control the first brake generating device and the second brake generating device to produce the effect of linkage braking , The interlocking mechanism of the utility model has the advantages of low cost and small space occupation, etc., can effectively optimize the design of the car model, and improve the cost performance and competitiveness of the product.

In order to achieve the above object, the interlocking braking system of the present utility model is arranged on a set of vehicles provided with a frame, and the frame is provided with a second seat surface, including a first brake operating device, a second brake operating device , a third brake operating device, a first brake generating device, a second brake generating device and a brake wire.

The first brake operating device includes a first brake master cylinder, a first operating lever pivotally connected to the first brake master cylinder and a first rocker arm pivotally connected to the first brake master cylinder, the first brake master cylinder It includes a first cylinder, a first plunger, a first oil chamber and a first cylinder spring connecting the first cylinder and the first plunger, wherein the first rocker arm can push the first plunger , so that the first brake master cylinder sends out an oil pressure.

The second brake operating device includes a second brake master cylinder, a second operating lever pivotally connected to the second brake master cylinder and a second rocker arm pivotally connected to the second brake master cylinder, the second brake master cylinder It includes a second cylinder, a second plunger, a second oil chamber, and a second cylinder spring connecting the second cylinder and the second plunger, wherein the second rocker arm can push the second plunger , so that the second brake master cylinder sends out an oil pressure.

The third brake operating device includes a third operating lever pivotally arranged on the vehicle frame, and the third operating lever is provided with a first seating surface.

The first brake generating device is a disc brake device, including a first brake caliper and a first brake disc, and a first brake oil pipe is used to connect the first brake caliper and the first oil chamber; the second brake generating device is the same It is a disc brake device, including a second brake caliper and a second brake disc, and a second brake oil pipe is used to connect the second brake caliper and the second oil chamber.

The brake wire includes an inner wire and a set of first bushing and a second bushing arranged on the inner wire, the inner wire is connected to the first rocker arm and the second rocker arm, the first bushing is connected to the first cylinder body and the second seat surface, The second casing connects the first seating surface and the second cylinder body. Wherein, when the third operating lever moves, the relative distance between the first seating surface and the second seating surface increases, so that the distances between the two ends of the inner cable and the first bushing and the second bushing respectively decrease, forcing the inner cable to pull the first rocker respectively. arm and the second rocker arm to achieve the effect of linkage braking.

Based on the above design, the utility model can synchronously promote the movement of the first brake generating device and the second brake generating device when the rider uses the foot to step on the third operating lever to move through the specific brake wire assembly method. The simple mechanism design replaces the use of traditional hydraulic control valves, which is of great benefit both in terms of cost and space utilization.

The above-mentioned third operating lever may further include a stepping portion. Therefore, it is convenient for the rider to step on the third operating lever with the foot through the stepping part, so that the first brake generating device and the second brake generating device can synchronously generate the brake interlocking effect.

The above-mentioned third brake operating device may further include a rebound spring sandwiched between the third operating lever and the vehicle frame. Therefore, by setting the rebound spring, the restoring force of the third operating lever can be effectively strengthened, and it can quickly rebound to the initial position after the user steps on it.

In addition, the utility model further includes another interlocking brake system, which is set on a group of vehicles with a frame. The frame is provided with a second seat surface and a fourth seat surface, and includes a first brake operating device , a second brake operating device, a third brake operating device, a first brake generating device, a second brake generating device and a brake wire.

The first brake operating device includes a first brake master cylinder, a first operating lever pivotally connected to the first brake master cylinder and a first rocker arm pivotally connected to the first brake master cylinder, the first brake master cylinder It includes a first cylinder, a first plunger, a first oil chamber and a first cylinder spring connecting the first cylinder and the first plunger, wherein the first rocker arm can push the first plunger , so that the first brake master cylinder sends out an oil pressure.

The second brake operating device includes a second brake master cylinder, a second operating lever pivotally connected to the second brake master cylinder and a second rocker arm pivotally connected to the second brake master cylinder, the second brake master cylinder It includes a second cylinder, a second plunger, a second oil chamber, and a second cylinder spring connecting the second cylinder and the second plunger, wherein the second rocker arm can push the second plunger , so that the second brake master cylinder sends out an oil pressure.

The third brake operating device includes a third operating lever pivotally arranged on the vehicle frame, and the third operating lever is provided with a first seating surface and a third seating surface.

The first brake generating device is a disc brake device, including a first brake caliper and a first brake disc, and a first brake oil pipe is used to connect the first brake caliper and the first oil chamber; the second brake generating device is also A disc brake device includes a second brake caliper and a second brake disc, and a second brake oil pipe is used to connect the second brake caliper and the second oil chamber.

The brake wire includes an inner wire and a set of first bushing, a second bushing and a third bushing arranged on the inner wire, the inner wire is connected to the first rocker arm and the second rocker arm, and the first bushing is connected to the first cylinder and the second seat surface, the second bushing connects the fourth seat surface and the second cylinder block, and the third bushing connects the first seat surface and the third seat surface. Wherein, when the third operating lever moves, the relative distance between the first seat surface and the second seat surface increases, and the relative distance between the third seat surface and the fourth seat surface increases, so that the two ends of the inner line are respectively connected to the first casing and the second seat. The distance between the two bushings is reduced, forcing the inner cable to pull the first rocker arm and the second rocker arm respectively to achieve the effect of linked braking.

Moreover, the utility model further includes a further interlocking brake system, which is set on a group of vehicles with a frame, and the frame is provided with a second seat surface and a fourth seat surface, including a first braking operation device, a second brake operating device, a third brake operating device, a first brake generating device, a second brake generating device and a brake wire.

The first brake operating device includes a first brake master cylinder, a first operating lever pivotally connected to the first brake master cylinder and a first rocker arm pivotally connected to the first brake master cylinder, the first brake master cylinder It includes a first cylinder, a first plunger, a first oil chamber and a first cylinder spring connecting the first cylinder and the first plunger, wherein the first rocker arm can push the first plunger , so that the first brake master cylinder sends out an oil pressure.

The second brake operating device includes a second brake master cylinder, a second operating lever pivotally connected to the second brake master cylinder and a second rocker arm pivotally connected to the second brake master cylinder, the second brake master cylinder It includes a second cylinder, a second plunger, a second oil chamber, and a second cylinder spring connecting the second cylinder and the second plunger, wherein the second rocker arm can push the second plunger , so that the second brake master cylinder sends out an oil pressure.

The third brake operating device includes a third operating lever pivotally arranged on the vehicle frame, and the third operating lever is provided with a guide seat.

The first brake generating device is a disc brake device, including a first brake caliper and a first brake disc, and a first brake oil pipe is used to connect the first brake caliper and the first oil chamber; the second brake generating device is also A disc brake device includes a second brake caliper and a second brake disc, and a second brake oil pipe is used to connect the second brake caliper and the second oil chamber.

The brake wire includes an inner wire and a set of first sleeve and a second sleeve arranged on the inner wire. The inner wire is connected to the first rocker arm and the second rocker arm, and the inner wire is mounted on the guide seat. The first cylinder body and the second seat surface, and the second bushing connect the fourth seat surface and the second cylinder body. Wherein, when the third operating lever moves, the relative distance between the guide seat and the second seat surface increases, and the relative distance between the guide seat and the fourth seat surface increases, and the guide seat will pull the inner cable, thereby forcing the inner cable to pull the first rocker arm and the fourth seat surface respectively. The second rocker arm, in order to achieve the effect of linkage brake.

The above summary and the following detailed description are exemplary in order to further illustrate the patent scope of the present utility model. Other purposes and advantages of the present utility model will be described in the subsequent description and accompanying drawings.

Description of drawings

FIG. 1 is a system architecture diagram of a linkage brake system according to a first embodiment of the present invention.

Fig. 2 is a partial perspective view of the linkage braking system of the first embodiment of the present invention.

Fig. 3 is a motion diagram of the linkage braking system of the first embodiment of the present invention.

FIG. 4 is a system architecture diagram of a linkage brake system according to a second embodiment of the present invention.

Fig. 5 is a partial perspective view of the interlocking brake system according to the second embodiment of the present invention.

Fig. 6 is a motion diagram of the interlocking braking system of the second embodiment of the present invention.

FIG. 7 is a system architecture diagram of a linkage braking system according to a third embodiment of the present invention.

Fig. 8 is a partial perspective view of the interlocking braking system of the third embodiment of the present invention.

Fig. 9 is a movement diagram of the interlocking braking system of the third embodiment of the present invention.

Description of main component symbols:

a,b,c linkage brake system

1 First brake operating device

10 The first brake master cylinder

11 First operating lever

12 First cylinder block

13 First plunger

14 First cylinder spring

15 First rocker arm

16 The first oil chamber

2 Second brake operating device

20 Second brake master cylinder

21 Second operating lever

22 Second cylinder block

23 Second plunger

24 Second cylinder spring

25 Second rocker arm

26 Second oil chamber

3,3’,3” third brake operating device

31 Third operating lever

311 Stepping part

312 pivot

313,313’ first seat

314’ The third seat

315 guide seat

32 return spring

4 The first brake generating device

41 First brake caliper

42 The first brake disc

5 Second brake generator

51 Second brake caliper

52 Second brake disc

6 frame

61 Wiring piece

611,611’,611” second seating surface

612’,612” fourth seating surface

62 stop

8,8’,8” brake wire

81 inside

82,82’,82” First Casing

83,83’,83” second casing

84’ third casing

91 The first brake oil pipe

92 Second brake oil pipe

94 steering handle

Detailed ways

Please refer to FIG. 1 and FIG. 2 , which are respectively a system structure diagram and a partial perspective view of the linkage brake system according to the first embodiment of the present invention. The figure shows a linkage brake system a, which is set on a group of vehicles provided with a vehicle frame 6, and mainly includes a first brake operating device 1, a second brake operating device 2, a third brake operating device 3, A first brake generating device 4 , a second brake generating device 5 and a brake wire 8 . Wherein, the vehicle frame 6 is the main structure of the vehicle, and a steering handle 94 is pivotally arranged on the vehicle frame 6, allowing the rider to operate and change the driving direction when the vehicle is running. Furthermore, a second seating surface 611 is disposed on the frame 6 for connecting and fixing the end of the bushing of the brake wire 8 .

In this embodiment, the first brake operating device 1 includes a first brake master cylinder 10 , a first operating lever 11 and a first rocker arm 15 . The first brake master cylinder 10 is installed on a steering handle 94 , and is pivotally connected with a first operating lever 11 and a first rocker arm 15 . The first brake master cylinder 10 includes a first cylinder 12, a first plunger 13, a first oil chamber 16 and a first cylinder spring 14 connecting the first cylinder 12 and the first plunger 13, wherein , the first cylinder spring 14 will apply force for a long time to push the first plunger 13 to one side, and when the first rocker arm 15 rotates, it can resist the elastic force of the first cylinder spring 14 to push the first plunger 13 to move, so that The first master brake cylinder 10 sends out an oil pressure to push the hydraulic oil in the first cylinder 12 out.

The second brake operating device 2 includes a second brake master cylinder 20 , a second operating lever 21 and a second rocker arm 25 . The second brake master cylinder 20 is installed on a steering handle 94 , and is pivotally connected with a second operating lever 21 and a second rocker arm 25 . The second brake master cylinder 20 includes a second cylinder 22, a second plunger 23, a second oil chamber 26 and a second cylinder spring 24 connecting the second cylinder 22 and the second plunger 23 , wherein, the second cylinder spring 24 will apply force for a long time to push the second plunger 23 to one side, and when the second rocker arm 25 rotates, it can resist the elastic force of the second cylinder spring 24 to push the second plunger 23 to move , so that the second master brake cylinder 20 sends an oil pressure to push the hydraulic oil in the second cylinder block 22 out.

The third brake operating device 3 includes a third operating lever 31 and a rebound spring 32 sandwiched between the third operating lever 31 and the vehicle frame 6, and the third brake operating device 3 is pivotally mounted on the vehicle frame with a fulcrum 312 6 on a bridge piece 61, in this embodiment, the bridge piece 61 and the vehicle frame 6 are a combined structure assembled with each other, but not limited thereto, they can also belong to the body of the vehicle frame 6 and form an integral body formula structure. The rebound spring 32 can make the third operating lever 31 collide with the stopper 62 on the vehicle frame 6, so as to give the third operating lever 31 an initial position, so as to prevent the rebound position from being too high after the movement. In addition, a The first seating surface 313 is disposed on the third operating lever 31 and is used for connecting and fixing the end of the bushing of the brake wire 8 . Moreover, as shown in the figure, one end group of the third operating lever 31 is provided with a stepping part 311, which can facilitate the rider to step on the foot and drive the third operating lever 31 to pivot, thereby making the first brake generating device 1 and the second brake generating device 2 synchronously generate a brake linkage effect.

The first brake generating device 4 includes a first brake caliper 41 and a first brake disc 42, and a first brake oil pipe 91 is used to connect a first brake caliper 41 and the first oil chamber 16 to connect the inside of the first brake device 1. The hydraulic oil is transmitted to the first brake caliper 41. When the first brake caliper 41 receives an oil pressure input, the first brake caliper 41 will clamp the first brake disc 42 to generate braking force, so that the first brake disc 42 The rotation speed slows down or stops; similarly, the second brake generating device 5 includes a second brake caliper 51 and a second brake disc 52, and a second brake oil pipe 92 is used to connect the second brake caliper 51 and the second oil chamber 26, The hydraulic oil in the second brake device 2 is transmitted to the second brake caliper 51. When the second brake caliper 51 receives an oil pressure input, the second brake caliper 51 will clamp the second brake disc 52 to generate a braking force. The speed of the second brake disc 52 is slowed down or stopped.

The brake wire 8 includes an inner wire 81 and a first sleeve 82 and a second sleeve 83 that are arranged on the inner wire 81. The inner wire 81 connects the first rocker arm 15 and the second rocker arm 25, so that the brake wire from the third operating lever 31 is synchronously transmitted to the first brake operating device 1 and the second brake operating device 2; on the other hand, one end of the first sleeve 82 is in contact with the first cylinder 12 of the first brake operating device 1, and the other end is in contact with the first cylinder 12 of the first brake operating device 1. The second seat surface 611 on the bridge piece 61; one end of the second bushing 83 collides with the second cylinder 22 of the second brake operating device 2, and the other end collides with the first seat surface 313 on the third operating lever 31 .

Wherein, if the rider operates the first operating lever 11, the first operating lever 11 will apply force to the first rocker arm 15, so that the first plunger 13 can push out the hydraulic oil in the first master brake cylinder 10, Through the first brake oil pipe 91, the first brake caliper 41 produces a braking force on the first brake disc 42; similarly, if the rider operates the second operating lever 21, the second operating lever 21 will exert a braking force on the second rocker arm 25. Force is applied so that the second plunger 23 can push the hydraulic oil in the second brake master cylinder 20 out, and the second brake caliper 51 can generate a braking force on the second brake disc 52 through the second brake oil pipe 92 .

Please refer to FIG. 3 , which is a motion diagram of the interlocking braking system of the first embodiment of the present invention. As shown in the figure, when the rider steps on the stepping part 311 of the third operating lever 31 with his feet, the third operating lever 31 will rotate with the fulcrum 312, and the force applied by the third operating lever 31 can make the first seat surface 313 The relative distance from the second seating surface 611 increases, so that the distances between the two ends of the inner wire 81 and the first sleeve 82 and the second sleeve 83 respectively decrease. Since the first bushing 82 and the second bushing 83 are in contact with the first cylinder 12 and the second cylinder 22 respectively, the two ends of the inner wire 81 will force the first rocker arm 15 and the second rocker of the first brake operating device 1 The second rocker arm 25 of the brake operating device 2 moves to achieve the linkage braking effect.

Please refer to FIG. 4 and FIG. 5 , which are a system structure diagram and a partial perspective view of a linkage brake system according to a second embodiment of the present invention, respectively. The figure shows a linkage brake system b, which is set on a group of vehicles provided with a vehicle frame 6, wherein, this embodiment is based on the implementation pattern derived from the first embodiment, and it is different from the first embodiment The difference lies in that the connection methods of the third brake operating device 3' and the brake wire 8' are different from those of the first embodiment, while the rest are the same as those of the first embodiment. In this embodiment, the third operating lever 31 in the third operating device 3' is provided with a first seating surface 313' and a third seating surface 314' at the same time, and the bridge member 61 located on the vehicle frame 6 is At the same time, a second seating surface 611' and a fourth seating surface 612' are provided. In addition, the brake wire 8' includes an inner wire 81 and a first sleeve 82', a second sleeve 83' and a third sleeve 84' sleeved on the inner wire 81. The inner wire 81 is connected to the first rocker arm 15 and The second rocker arm 25 is used to synchronously transmit the applied force from the third operating lever 31 to the first brake operating device 1 and the second brake operating device 2; The other end of the first cylinder body 12 of a brake operating device 1 is in contact with the second seat surface 611' on the bridge member 61; one end of the second sleeve 83' is in contact with the second cylinder body 22 of the second brake operation device 2 , the other end is in contact with the fourth seat surface 612' on the bridge piece 61; one end of the third sleeve 84' is in contact with the first seat surface 313' of the third operating lever 31, and the other end is in contact with the third operating lever 31 The third seating surface 314'.

Please refer to FIG. 6 , which is a motion diagram of the linkage braking system of the second embodiment of the present invention. As shown in the figure, when the rider steps on the stepping part 311 of the third operating lever 31 with his feet, the third operating lever 31 will rotate with the fulcrum 312, and the force applied by the third operating lever 31 can make the first seat surface 313 The relative distance between 'and the second seat surface 611' increases, and at the same time, the relative distance between the third seat surface 314' and the fourth seat surface 612' increases, so that the two ends of the inner line 81 are respectively connected to the first sleeve 82' and the second sleeve. The distance of the pipe 83' is reduced. Since the first bushing 82' and the second bushing 83' interfere with the first cylinder 12 and the second cylinder 22 respectively, the two ends of the inner wire 81 will force the first brake operating device 1 The first rocker arm 15 and the second rocker arm 25 of the second brake operating device 2 move to achieve the linkage braking effect.

Please refer to FIG. 7 and FIG. 8 , which are a system structure diagram and a partial perspective view of a linkage brake system according to a third embodiment of the present invention, respectively. The figure shows a linkage brake system c, which is arranged on a group of vehicles provided with a vehicle frame 6, wherein, this embodiment is based on the implementation style derived from the first embodiment, which is different from the first embodiment The difference lies in that the connection mode of the third brake operating device 3 ″ and the brake wire 8 ″ is different from that of the first embodiment, while the rest are the same as those of the first embodiment. In this embodiment, the third operating lever 31 in the third operating device 3" is provided with a guide seat 315, while the bridge member 61 located on the vehicle frame 6 is provided with a second seat surface 611" and a first seat surface 611" at the same time. Four seat surfaces 612". The brake wire 8" includes an inner wire 81 and a first sleeve 82" and a second sleeve 83" sleeved on the inner wire 81. The inner wire 81 is connected to the first rocker arm 15 and the second The rocker arm 25 transmits the applied force from the third operating lever 31 to the first brake operating device 1 and the second brake operating device 2 synchronously. On the other hand, one end of the first bushing 82 "is in contact with the first cylinder 12 of the first brake operating device 1, and the other end is in contact with the second seating surface 611" on the bridge piece 61; the second bushing 83 " One end collides with the second cylinder 22 of the second brake operating device 2, and the other end collides with the fourth seating surface 612" on the bridge piece 61; in addition, the inner wire 81 is mounted on the guide seat 315, and the inner wire 81 can be mounted on the guide seat 315. Slide on seat 315.

Please refer to FIG. 9 , which is a motion diagram of the interlocking brake system of the third embodiment of the present invention. As shown in the figure, when the rider steps on the pedal part 311 of the third operating lever 31 with his foot, the third operating lever 31 will rotate at the fulcrum 312, and the relative distance between the guide seat 315 and the second seat surface 611" increases. , the relative distance between the guide seat 315 and the fourth seat surface 612" increases, so the guide seat 315 will pull the inner cable 81, so that both ends of the inner cable 81 pull the first rocker arm 15 of the first brake operating device 1 and the second brake operating device 2 The second rocking arm 25, to reach the effect of linkage brake. And in order to avoid the unbalanced applied force due to the different movement strokes of the first rocker arm 15 and the second rocker arm 25 , the balance of applied force can be achieved by sliding between the inner cable 81 and the guide seat 315 to produce a linkage braking effect.

The above-mentioned embodiments are only examples for convenience of description, and the scope of rights claimed by the utility model should be determined by the claims, rather than limited to the above-mentioned embodiments.

Claims (5)

1. A linkage brake system, which is arranged on a group of vehicles provided with a vehicle frame, and the vehicle frame is provided with a second seat surface, characterized in that it comprises: A first brake operating device includes a first brake master cylinder, a first operating lever pivotally connected to the first brake master cylinder, and a first rocker arm pivotally connected to the first brake master cylinder, the The first brake master cylinder includes a first cylinder, a first plunger, a first oil chamber and a first cylinder spring connecting the first cylinder and the first plunger, wherein the first rocker The arm can push the first plunger to make the first brake master cylinder send out an oil pressure; A second brake operating device, comprising a second brake master cylinder, a second operating lever pivotally connected to the second brake master cylinder, and a second rocker arm pivotally connected to the second brake master cylinder, the The second brake master cylinder includes a second cylinder, a second plunger, a second oil chamber, and a second cylinder spring connecting the second cylinder and the second plunger, wherein the second rocker The arm can push the second plunger to make the second brake master cylinder send out an oil pressure; A third brake operating device, including a third operating lever pivotally arranged on the vehicle frame, and the third operating lever is provided with a first seating surface; A first brake generating device, including a first brake caliper and a first brake disc, connecting the first brake caliper and the first oil chamber with a first brake oil pipe; A second brake generating device, including a second brake caliper and a second brake disc, connecting the second brake caliper and the second oil chamber with a second brake oil pipe; and A brake wire, including an inner wire and a set of first bushing and a second bushing arranged on the inner wire, the inner wire connects the first rocker arm and the second rocker arm, the first bushing connects the first a cylinder body and the second seat surface, and the second bushing connects the first seat surface and the second cylinder body; Wherein, when the third operating lever moves, the relative distance between the first seat surface and the second seat surface increases, so that the distances between the two ends of the inner line and the first bushing and the second bushing respectively decrease, forcing The inner cable respectively pulls the first rocker arm and the second rocker arm to achieve the effect of linked braking. 2. A linkage brake system, which is set on a group of vehicles provided with a frame, the frame is provided with a second seat surface and a fourth seat surface, characterized in that it comprises: A first brake operating device includes a first brake master cylinder, a first operating lever pivotally connected to the first brake master cylinder, and a first rocker arm pivotally connected to the first brake master cylinder, the The first brake master cylinder includes a first cylinder, a first plunger, a first oil chamber and a first cylinder spring connecting the first cylinder and the first plunger, wherein the first rocker The arm can push the first plunger to make the first brake master cylinder send out an oil pressure; A second brake operating device, comprising a second brake master cylinder, a second operating lever pivotally connected to the second brake master cylinder, and a second rocker arm pivotally connected to the second brake master cylinder, the The second brake master cylinder includes a second cylinder, a second plunger, a second oil chamber, and a second cylinder spring connecting the second cylinder and the second plunger, wherein the second rocker The arm can push the second plunger to make the second brake master cylinder send out an oil pressure; A third brake operating device, including a third operating lever pivotally arranged on the vehicle frame, the third operating lever is provided with a first seating surface and a third seating surface; A first brake generating device, including a first brake caliper and a first brake disc, connecting the first brake caliper and the first oil chamber with a first brake oil pipe; A second brake generating device, including a second brake caliper and a second brake disc, connecting the second brake caliper and the second oil chamber with a second brake oil pipe; and A brake wire, including an inner wire and a set of first sleeve, a second sleeve and a third sleeve arranged on the inner wire, the inner wire connects the first rocker arm and the second rocker arm, the first The bushing connects the first cylinder and the second seat, the second bush connects the fourth seat and the second cylinder, and the third bush connects the first seat and the third seat ; Wherein, when the third operating lever moves, the relative distance between the first seat surface and the second seat surface increases, and the relative distance between the third seat surface and the fourth seat surface increases, so that the two ends of the inner line are respectively connected to The distance between the first bushing and the second bushing is reduced, forcing the inner cable to pull the first rocker arm and the second rocker arm respectively, so as to achieve the effect of interlocking braking. 3. A linkage brake system, which is set on a group of vehicles provided with a frame, the frame is provided with a second seat surface and a fourth seat surface, characterized in that it comprises: A first brake operating device includes a first brake master cylinder, a first operating lever pivotally connected to the first brake master cylinder, and a first rocker arm pivotally connected to the first brake master cylinder, the The first brake master cylinder includes a first cylinder, a first plunger, a first oil chamber and a first cylinder spring connecting the first cylinder and the first plunger, wherein the first rocker The arm can push the first plunger to make the first brake master cylinder send out an oil pressure; A second brake operating device, comprising a second brake master cylinder, a second operating lever pivotally connected to the second brake master cylinder, and a second rocker arm pivotally connected to the second brake master cylinder, the The second brake master cylinder includes a second cylinder, a second plunger, a second oil chamber, and a second cylinder spring connecting the second cylinder and the second plunger, wherein the second rocker The arm can push the second plunger to make the second brake master cylinder send out an oil pressure; A third brake operating device, including a third operating lever pivotally arranged on the vehicle frame, and the third operating lever is provided with a guide seat; A first brake generating device, including a first brake caliper and a first brake disc, connecting the first brake caliper and the first oil chamber with a first brake oil pipe; A second brake generating device, including a second brake caliper and a second brake disc, connecting the second brake caliper and the second oil chamber with a second brake oil pipe; and A brake wire, including an inner wire and a set of first bushing and a second bushing arranged on the inner wire, the inner wire is connected to the first rocker arm and the second rocker arm, and the inner wire is mounted on the guide On the seat, the first sleeve connects the first cylinder and the second seat, and the second sleeve connects the fourth seat and the second cylinder; Wherein, when the third operating lever moves, the relative distance between the guide seat and the second seat surface increases, and the relative distance between the guide seat and the fourth seat surface increases, and the guide seat will pull the inner wire, thereby forcing the The inner cable respectively pulls the first rocker arm and the second rocker arm to achieve the effect of linked braking. 4. The linked brake system according to any one of claims 1 to 3, wherein the third operating lever further comprises a stepping portion. 5 . The linked brake system according to any one of claims 1 to 3 , wherein the third brake operating device further comprises a rebound spring sandwiched between the third operating lever and the vehicle frame.