TWI689441B - Interlocking brake system - Google Patents

Abstract

The present invention relates to an interlocking brake system, including a first brake operating device, a second brake operating device, a third brake operating device, a first brake generator, a second brake generator and a brake wire. The brake wire comprises an inner wire and a first sleeve and a second sleeve which are disposed on the inner wire. The inner wire is connected to the first rocker arm and the second rocker arm, the first sleeve is connected to the first cylinder body and the second seat surface, and the second sleeve is connected to the first seat surface and the second cylinder. Wherein, when the third operating lever is actuated, the relative distance between the first seat surface and the second seat surface increases, forcing the inner wire to pull the first rocker arm and the second rocker arm respectively to achieve the effect of the interlocking brake system. The present invention has the advantages of low cost and small space occupation, can effectively optimize the design of the vehicle, and improve the cost performance and competitiveness of the product.

Description

Chain brake system

The invention relates to a linked braking system, in particular to a linked braking system suitable for vehicles.

In accordance with the relevant laws and regulations, vehicles equipped with a linked brake system have become the current trend. Currently, related technologies have been disclosed. For example, the patent case No. I554434 of the Republic of China Patent has disclosed a linked brake design. This design allows riding The occupant can control the front wheel brake with the right hand, the rear wheel brake with the left hand, and the right foot pedal must be able to control the front and rear wheel brakes at the same time.

However, in the above-mentioned prior art design, the operation force distribution unit and its internal timing adjustment unit have a high complexity in terms of mechanism design or the interlocking relationship between the components, and the design lacks convenient assembly Because of the simple and simple mechanism components, it takes more time to assemble in the assembly process, and the required cost is higher and it may not have better linkage conversion performance.

Because of this, in the spirit of active invention, the inventor is eager to think of a linked brake system that can solve the above-mentioned problems. After several studies and experiments, the present invention has been completed.

The main object of the present invention is to provide a linked braking system which can produce the effect of linked braking by simultaneously operating the first brake generating device and the second brake generating device by stepping on the third brake operating device. The linkage mechanism has the advantages of low cost and small space occupation, which can effectively optimize the design of the car and improve the cost performance and competitiveness of the product.

To achieve the above object, the linked brake system of the present invention is provided on a group of vehicles provided with a frame, which is provided with a second seat surface, including a first brake operating device, a second brake operating device, a 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 a hydraulic 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 a hydraulic pressure.

The third brake operating device includes a third operating lever pivotally disposed on the 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, which is connected to the first brake caliper and the first oil chamber by a first brake oil pipe; the second brake generating device It is also a disc brake device, including a second brake caliper and a second brake disc, which is connected to the second brake caliper and the second oil chamber by a second brake oil pipe.

The brake wire includes an inner cable and a set of first sleeve and a second sleeve disposed on the inner cable. The inner cable is connected to the first rocker arm and the second rocker arm. The first sleeve is connected to the first cylinder and the second seat surface. The second sleeve connects the first seat surface and the second cylinder. Among them, when the third operating lever is actuated, the relative distance between the first seat surface and the second seat surface increases, so that the distance between the two ends of the inner cable and the first sleeve and the second sleeve decreases, forcing the inner cable to pull the first Rocker arm and second rocker arm to achieve the effect of linked braking.

Through the above design, the present invention uses a specific brake wire assembly method, when the rider steps on the foot to activate the third operating lever, the first brake generating device and the second brake generating device can be synchronously activated. The simple mechanism design replaces the use of traditional hydraulic control valves, which has a considerable help for cost and space utilization.

The third operating lever may further include a stepping portion. Thereby, the stepping portion can facilitate the rider to step on the third operating lever with the foot portion, so that the first brake generating device and the second brake generating device can simultaneously generate the brake linkage effect.

The third brake operating device may further include a rebound spring interposed between the third operating lever and the frame. Therefore, through the setting of the rebound spring, the restoring force of the third operating lever can be effectively strengthened, and the user can quickly rebound to the initial position after stepping on it.

In addition, the present invention further includes another linked brake system, which is provided on a group of vehicles provided with a frame, the frame is provided with a second seat surface and a fourth seat surface, including a first brake operating device, a first Two brake operation devices, a third brake operation device, a first brake generation device, a second brake generation 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 a hydraulic 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 a hydraulic pressure.

The third brake operating device includes a third operating lever pivotally disposed on the 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, which is connected to the first brake caliper and the first oil chamber by a first brake oil pipe; the second brake generating device It is also a disc brake device, including a second brake caliper and a second brake disc, which is connected to the second brake caliper and the second oil chamber by a second brake oil pipe.

The brake wire includes an inner cable and a set of first bushing, a second bushing and a third bushing, which are 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 sleeve connects the fourth seat surface and the second cylinder, and the third sleeve connects the first seat surface and the third seat surface. Among them, when the third operating lever is actuated, the relative distance between the first seating surface and the second seating surface increases, and the relative distance between the third seating surface and the fourth seating surface increases, so that both ends of the inner cable and the first sleeve and The distance of the second bushing is reduced, forcing the inner cable to pull the first rocker arm and the second rocker arm respectively to achieve the effect of interlocking braking.

Furthermore, the present invention further includes another linked brake system, which is provided on a group of vehicles provided with a frame, the frame is provided with a second seat surface and a fourth seat surface, including a first brake operating device, a 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 a hydraulic 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 a hydraulic pressure.

The third brake operating device includes a third operating lever pivotally disposed on the 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, which is connected to the first brake caliper and the first oil chamber by a first brake oil pipe; the second brake generating device It is also a disc brake device, including a second brake caliper and a second brake disc, which is connected to the second brake caliper and the second oil chamber by a second brake oil pipe.

The brake wire includes an inner cable and a set of first sleeve and a second sleeve set on the inner cable. The inner cable is connected to the first rocker arm and the second rocker arm, and the inner cable is mounted on the guide base, and the first sleeve is connected The first cylinder body and the second seat surface, the second sleeve connects the fourth seat surface and the second cylinder body. Among them, when the third operating lever is actuated, 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. The guide seat will pull the inner cable, thereby forcing the inner cable to pull the first rocker arm and the The second rocker arm to achieve the effect of continuous braking.

The above summary and the following detailed description are of exemplary nature to further illustrate the patent application scope of the present invention. The other objects and advantages of the present invention will be explained in the following description and illustration.

Please refer to FIGS. 1 and 2, which are a system architecture diagram and a partial perspective view of the linked brake system according to the first embodiment of the present invention. The figure shows a linked brake system a, which is installed on a group of vehicles with a 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 A brake generating device 4, a second brake generating device 5, and a brake wire 8. The frame 6 is the main structure of the vehicle. A steering handle 94 is pivotally mounted on the frame 6 to allow the rider to change the driving direction while the vehicle is traveling. Furthermore, a second seat surface 611 is disposed on the frame 6 and is used to connect the end of the sleeve that fixes 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 master brake cylinder 10 is mounted on a steering handle 94 and 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 push the first plunger 13 to one side for a long time, 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 brake master cylinder 10 sends out an oil pressure to push out the hydraulic oil in the first cylinder 12.

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 master brake cylinder 20 is mounted on a steering handle 94, and a second operating lever 21 and a second rocker arm 25 are pivotally connected. 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 Among them, the second cylinder spring 24 will push the second plunger 23 to one side for a long time, 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 brake master cylinder 20 sends out a hydraulic pressure to push out the hydraulic oil in the second cylinder 22.

The third brake operating device 3 includes a third operating lever 31 and a rebound spring 32 interposed between the third operating lever 31 and the frame 6. The third brake operating device 3 is pivotally mounted on the vehicle with a fulcrum 312 On one of the overlapping members 61 of the frame 6, in this embodiment, the overlapping member 61 and the frame 6 are of a combined structure assembled with each other, but not limited to this, and can also belong to the body of the frame 6, Form an integrated structure. The rebound spring 32 can press the third operating lever 31 against the stopper 62 on the frame 6 to give a starting position of the third operating lever 31 to prevent the rebound position from being too high after actuation. In addition, a The first seat surface 313 is disposed on the third operating lever 31 and is used to connect the end of the sleeve that fixes the brake wire 8. Furthermore, as shown in the figure, one end of the third operating lever 31 is provided with a stepping portion 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 generate the brake linkage effect synchronously.

The first brake generating device 4 includes a first brake caliper 41 and a first brake disc 42. A first brake oil pipe 91 connects a first brake caliper 41 and a first oil chamber 16 to 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 a braking force, so that the first brake disc 42 The rotation speed slows down or stays the same; 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 connects 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 a hydraulic pressure input, the second brake caliper 51 will clamp the second brake disc 52 to produce a braking force , The rotation speed of the second brake disc 52 is slowed or stopped.

The brake wire 8 includes an inner wire 81 and a set of first sleeve 82 and second sleeve 83 disposed on the inner wire 81. The inner wire 81 connects the first rocker arm 15 and the second rocker arm 25, so that the third operating lever 31 The applied force 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 abuts the first cylinder 12 of the first brake operating device 1, and the other end abuts The second seat surface 611 on the overlapping member 61; one end of the second sleeve 83 abuts the second cylinder 22 of the second brake operating device 2, and the other end abuts the first seat surface 313 on the third operating lever 31.

Among them, if the rider operates the first operating lever 11, the first operating lever 11 will urge the first rocker arm 15 so that the first plunger 13 can push out the hydraulic oil in the first brake master cylinder 10, The first brake caliper 41 causes the first brake disc 42 to generate a braking force via the first brake oil pipe 91; similarly, if the rider operates the second operating lever 21, the second operating lever 21 will act on the second rocker arm 25 The force is applied so that the second plunger 23 can push out the hydraulic oil in the second brake master cylinder 20, so that the second brake caliper 51 generates a braking force on the second brake disc 52 through the second brake oil pipe 92.

Please refer to FIG. 3, which is an action diagram of the linked brake system according to the first embodiment of the present invention. As shown in the figure, when the rider steps on the stepping portion 311 of the third operating lever 31 with the foot, the third operating lever 31 will rotate with the fulcrum 312 at this time, and the third operating lever 31 exerts force to 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 line 81 and the first sleeve 82 and the second sleeve 83 respectively decrease. Since the first sleeve 82 and the second sleeve 83 are in contact with the first cylinder 12 and the second cylinder 22, respectively, both ends of the inner cable 81 will force the first rocker arm 15 and the second of the first brake operating device 1 The second rocker arm 25 of the brake operating device 2 actuates to achieve the interlocking braking effect.

Please refer to FIGS. 4 and 5, which are respectively a system architecture diagram and a partial perspective view of a linked brake system according to a second embodiment of the present invention. The figure shows a linked brake system b, which is installed on a group of vehicles equipped with a frame 6, wherein this embodiment is based on the implementation of the first embodiment, which is different from the first embodiment The point is that the connection method of the third brake operating device 3'and the brake wire 8'are different from the first embodiment, and the rest are the same as 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 overlapping member 61 on the frame 6 is At the same time, a second seat surface 611' and a fourth seat surface 612' are provided. In addition, the brake wire 8 ′ includes an inner cable 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 transmits the force from the third operating lever 31 to the first brake operating device 1 and the second brake operating device 2 simultaneously; on the other hand, one end of the first sleeve 82' interferes with the first The first cylinder 12 of the brake operating device 1 has the other end abutting against the second seat surface 611' on the overlapping member 61; one end of the second sleeve 83' abuts against the second cylinder 22 of the second brake operating device 2, The other end abuts against the fourth seating surface 612' on the overlapping member 61; one end of the third sleeve 84' abuts against the first seating surface 313' of the third operating lever 31, and the other end abuts against the third operating lever 31 The third seat surface 314'.

Please refer to FIG. 6, which is an operation diagram of a linked brake system according to a second embodiment of the present invention. As shown in the figure, when the rider steps on the stepping portion 311 of the third operating lever 31 with the foot, the third operating lever 31 will rotate with the fulcrum 312 at this time, and the third operating lever 31 exerts force to make the first seat surface 313 The relative distance between'the second seat surface 611' increases and 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 and the first sleeve 82' and the second The distance of the sleeve 83' is reduced. Since the first sleeve 82' and the second sleeve 83' are in contact with the first cylinder 12 and the second cylinder 22, respectively, the ends of the inner cable 81 will force the first brake operating device The first rocker arm 1 of 1 and the second rocker arm 25 of the second brake operating device 2 actuate to achieve an interlocking braking effect.

Please refer to FIGS. 7 and 8, which are a system architecture diagram and a partial perspective view of a linked brake system according to a third embodiment of the present invention. The figure shows a linked brake system c, which is installed on a group of vehicles provided with a frame 6, wherein this embodiment is based on the implementation of the first embodiment, which is different from the first embodiment The point is that the connection method of the third brake operating device 3" and the brake wire 8" is different from that of the first embodiment, and the rest are the same as the first embodiment. In this embodiment, the third operating lever 31 in the third operating device 3" is provided with a guide seat 315, and the overlapping member 61 on the frame 6 is also provided with a second seating surface 611" and a first seat 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 connects the first rocker arm 15 and the second The rocker arm 25 synchronously transmits the force from the third operating lever 31 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" abuts the first cylinder 12 of the first brake operating device 1, and the other end abuts the second seat surface 611" on the lap 61; the second sleeve 83" One end is against the second cylinder 22 of the second brake operating device 2, and the other end is against the fourth seating surface 612" on the lap 61; In addition, the inner cable 81 is mounted on the guide base 315, and the inner cable 81 can be The guide 315 slides up.

Please refer to FIG. 9, which is an action diagram of a linked brake system according to a third embodiment of the present invention. As shown in the figure, when the rider steps on the stepping portion 311 of the third operating lever 31 with the foot, the third operating lever 31 will rotate with 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 and the second brake operating device 2 of the first brake operating device Of the second rocker arm 25 to achieve the effect of interlocking braking. In addition, in order to avoid the different actuation strokes of the first rocker arm 15 and the second rocker arm 25 from affecting the imbalance of the applied force, the applied force can be balanced by sliding between the inner cable 81 and the guide base 315 to produce the interlocking braking effect.

The above embodiments are only examples for the convenience of description, and the scope of rights claimed by the present invention should be subject to the scope of the patent application, and not limited to the above embodiments.

a, b, c: linked brake system 1: The first brake operating device 10: First brake master cylinder 11: The first operating lever 12: the first cylinder 13: First plunger 14: First cylinder spring 15: First rocker 16: First oil room 2: Second brake operating device 20: Second brake master cylinder 21: Second operating lever 22: Second cylinder 23: Second plunger 24: second cylinder spring 25: second rocker 26: Second oil chamber 3,3’,3”: Third brake operating device 31: Third operating lever 311: Stomp 312: Fulcrum 313,313’: the first seat 314’: The third seat 315: Guide seat 32: rebound spring 4: First brake generating device 41: The first brake caliper 42: The first brake disc 5: Second brake generating device 51: Second brake caliper 52: Second brake disc 6: Frame 61: Splice 611,611’,611”: the second seat surface 612’,612”: the fourth seat surface 62: Stopper 8,8’,8”: brake wire 81: Inside 82,82’,82”: the first casing 83,83’,83”: second casing 84’: Third casing 91: First brake hose 92: Second brake hose 94: steering handle

FIG. 1 is a system architecture diagram of a linked brake system according to a first embodiment of the present invention. FIG. 2 is a partial perspective view of the linked brake system of the first embodiment of the present invention. FIG. 3 is an operation diagram of the linked brake system according to the first embodiment of the present invention. 4 is a system architecture diagram of a linked brake system according to a second embodiment of the invention. FIG. 5 is a partial perspective view of a linked brake system of a second embodiment of the present invention. FIG. 6 is an operation diagram of a linked brake system according to a second embodiment of the invention. 7 is a system architecture diagram of a linked brake system according to a third embodiment of the present invention. 8 is a partial perspective view of a linked brake system of a third embodiment of the present invention. FIG. 9 is an operation diagram of a linked brake system according to a third embodiment of the present invention.

a: linked brake system

1: The first brake operating device

10: First brake master cylinder

11: The first operating lever

12: the first cylinder

13: First plunger

14: First cylinder spring

15: First rocker

16: First oil room

2: Second brake operating device

20: Second brake master cylinder

21: Second operating lever

22: Second cylinder

23: Second plunger

24: second cylinder spring

25: second rocker

26: Second oil chamber

3: Third brake operating device

31: Third operating lever

311: Stomp

312: Fulcrum

313: The first seat

32: rebound spring

4: First brake generating device

41: The first brake caliper

42: The first brake disc

5: Second brake generating device

51: Second brake caliper

52: Second brake disc

6: Frame

61: Splice

611: Second seat surface

62: Stopper

8: brake wire

81: Inside

82: First casing

83: Second casing

91: First brake hose

92: Second brake hose

94: steering handle

Claims (5)

A linked brake system is set on a group of vehicles with a frame, the frame is provided with a second seat surface, including: a first brake operating device, including a first brake master cylinder, a pivot connected to the first A first operating lever on a brake master cylinder and a first rocker arm pivotally connected to the first brake master cylinder, the first brake master cylinder includes a first cylinder, a first plunger, a first An 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 A second brake operating device, including 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 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 The rocker arm can push the second plunger to make the second brake master cylinder send out a hydraulic pressure; a third brake operating device includes a third operating lever pivotally mounted on the frame, the third operating lever is provided There is a first seating surface; a first brake generating device, including a first brake caliper and a first brake disc, is connected to the first brake caliper and the first oil chamber with a first brake oil pipe; a second The brake generating device, including a second brake caliper and a second brake disc, is connected to the second brake caliper and the second oil chamber by a second brake oil pipe; and a brake wire, including an inner cable and a set A first sleeve and a second sleeve on the inner line, the inner line connects the first rocker arm and the second rocker arm, the first sleeve connects the first cylinder and the second seating surface, the first Two sleeves connect the first seat surface and the second cylinder; wherein, when the third operating lever is actuated, the relative distance between the first seat surface and the second seat surface increases, so that the two ends of the inner line are respectively The distance from the first sleeve and the second sleeve is reduced, forcing the inner cable to pull the first rocker arm and the second rocker arm, respectively, to achieve the effect of interlocking braking. A linked brake system is set on a group of vehicles with a frame, the frame is provided with a second seat surface and a fourth seat surface, including: a first brake operating device, including a first brake master pump, 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 includes a first cylinder, a first A 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 The pump sends out an oil pressure; a second brake operating device, including a second brake master cylinder, a second operating lever pivotally connected to the second brake master cylinder, and a second brake master cylinder pivotally connected to the second brake master cylinder The second rocker arm, 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 arm can push the second plunger, so that the second brake master cylinder sends out a hydraulic pressure; a third brake operating device, including a third operating lever pivotally mounted on the 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, is connected to the first by a first brake oil pipe A brake caliper and the first oil chamber; a second brake generating device, including a second brake caliper and a second brake disc, is connected to the second brake caliper and the second oil chamber with a second brake oil pipe; And a brake wire, including an inner cable and a set of first sleeve, a second sleeve and a third sleeve disposed on the inner cable, the inner cable connects the first rocker arm and the second rocker arm, the first A sleeve connects the first cylinder and the second seating surface, the second sleeve connects the fourth seating surface and the second cylinder, and the third sleeve connects the first seating surface and the third seating Where; when the third operating lever is actuated, the relative distance between the first seating surface and the second seating surface increases, and the relative distance between the third seating surface and the fourth seating surface increases, so that both ends of the inner cable The distances between the points and the first sleeve and the second sleeve are reduced, forcing the inner cable to pull the first rocker arm and the second rocker arm, respectively, to achieve the effect of interlocking braking. A linked brake system is set on a group of vehicles with a frame, the frame is provided with a second seat surface and a fourth seat surface, including: a first brake operating device, including a first brake master pump, 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 includes a first cylinder, a first A 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 The pump sends out an oil pressure; a second brake operating device, including a second brake master cylinder, a second operating lever pivotally connected to the second brake master cylinder, and a second brake master cylinder pivotally connected to the second brake master cylinder The second rocker arm, 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 arm can push the second plunger, so that the second brake master cylinder sends out a hydraulic pressure; a third brake operating device, including a third operating lever pivotally mounted on the frame, 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 is connected to the first brake caliper and the first oil chamber by a first brake oil pipe A second brake generating device, including a second brake caliper and a second brake disc, is connected to the second brake caliper and the second oil chamber with a second brake oil pipe; and a brake wire, including an inner cable And a set of first sleeve and a second sleeve set on the inner cable, the inner cable connects the first rocker arm and the second rocker arm, and mounts the inner cable on the guide base, the first set The tube connects the first cylinder and the second seating surface, and the second sleeve connects the fourth seating surface and the second cylinder; wherein, when the third operating lever is actuated, the guide seat and the second seating surface The relative distance between the seat surface increases and the relative distance between the guide seat and the fourth seat surface increases. The guide seat will pull the inner cable, thereby forcing the inner cable to pull the first rocker arm and the second rocker arm respectively to achieve linkage The effect of braking. For the linked brake system according to any one of claims 1 to 3, the third operating lever further includes a pedal. As in the linked brake system according to any one of claims 1 to 3, the third brake operating device further includes a rebound spring interposed between the third operating lever and the frame.

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