TWI697437B - 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 first brake generating device, a second brake generating device, a first brake wire, a second brake wire, and a brake pipe. The first brake operating device includes a first fixing frame, a first operating lever pivotally connected to the first fixing frame by the first pivoting point, and a balance member pivotally connected to the first operating lever by the second pivoting point. The first fixing frame is provided with a first positioning portion and a second positioning portion. A third positioning portion and a fourth positioning portion are disposed on the two ends of the balance member. Wherein, the fourth positioning portion is disposed within specified range formed by the three points of the first pivoting point, the second pivoting point and the second positioning portion. When the rider presses the first operating lever, the interlocking brake system could have better a better force amplification ratio in order to increase brake forces of the first brake generating device and the second brake generating device.

Description

Interlocking brake system

The present invention relates to a continuous braking system, in particular to a continuous braking system suitable for power vehicles.

The government requires the mandatory installation of interlocking brake systems for vehicle safety related laws. Please refer to Figure 8, which is the architecture diagram of the conventional interlocking brake system. The figure shows a conventional linked brake system, which mainly includes a first brake operating device 91, a second brake operating device 92, a first brake generating device 93, a second brake generating device 94, and a first brake wire 95 , A second brake wire 96 and a brake oil pipe 98.

Please refer to FIGS. 9 and 10 together, which are a partial cross-sectional view of the conventional linked brake system and a cross-sectional view of the first brake operating device, respectively. As shown in the figure, the first brake operating device 91 includes a first fixing frame 912, a first operating lever 911 and a balance member 913. The first fixing frame 912 is arranged on a handle 99, which is pivotally connected to the frame ( (Not shown), the rider can control the direction of the vehicle. The first fixing frame 912 is provided with a first positioning portion 9121 and a second positioning portion 9122. The first operating lever 911 is divided into an end portion 9111, a grip portion 9112, and a root portion 9113 in sequence. The end portion 9111 is often spherical in order to avoid endangering others or the safety of the rider in an accident. The grip portion 9112 is for the rider. Operate the brake position by hand. The root 9113 is the position where the first operating lever 911 is pivoted to the first fixing frame 912 (first pivot point 914), and the root 9113 is also the balance member 913 pivoted to the position of the first operating lever 911 (the second Pivot point 915), both ends of the balance member 913 are provided with a third positioning portion 9131 and a fourth positioning portion 9132 respectively, and the second pivot point 915 is located between the third positioning portion 9131 and the fourth positioning portion 9132 .

The second brake operating device 92 includes a brake master cylinder 922, a second operating lever 921, a rocker 923, and a carriage 924. The brake master cylinder 922 is disposed on a handle 99 and includes a cylinder 9223 and a plunger 9221 , An oil chamber 9224 and a rebound spring 9222. The plunger 9221 and the rebound spring 9222 are contained in the oil chamber 9224 and can contain part of the hydraulic oil. The rebound spring 9222 is located between the plunger 9221 and the cylinder 9223. A spring force is applied to the plunger 9221 under compression for a long time. The rocker arm 923 is pivotally connected to the brake master cylinder 922, and can push the plunger 9221 to move when rotating, so that the hydraulic oil in the oil chamber 9224 is generated by the action of the plunger 9221. The second operating lever 921 is pivotally connected to the brake master cylinder 922 , When the second operating lever 921 rotates, the rocker arm 923 can be pushed to rotate. The carriage 924 is pivotally connected to the rocker arm 923, and the rocker arm 923 can be rotated when the carriage 924 is moved by the connecting action.

The first brake generating device 93 is a drum brake device. The device has a first brake rocker 931, a brake disc 935, two brake shoes 933, a wheel hub 936, and a first brake fixing frame 937. The brake disc 935 device There is a brake cam 932 and a pin 934. When the first brake rocker arm 931 is rotated by force, the first brake cam 932 will rotate synchronously. At this time, the brake shoe 933 is supported by the brake cam 932 with the pin 934 as a fulcrum. The opened brake shoe 933 will contact the wheel hub 936 and cause friction, so that the first brake generating device 93 generates a braking force. The second brake generating device 94 is a disc brake device. The device has a brake caliper 941 and a brake disc 942. When the brake caliper 941 is inputted with a hydraulic pressure, the brake caliper 941 will clamp the brake disc 942, The secondary brake generating device 94 generates braking force.

The first brake wire 95 includes a first inner wire 951 and a first sleeve 952 that covers the outside of the first inner wire 951. One end of the first inner wire 951 is connected to the third positioning portion 9131, and the other end can drive the first brake rocker arm 931. One end of the first sleeve 952 abuts the first positioning portion 9121, and the other end abuts the first brake fixing frame 937; the second brake wire 96 includes a second inner wire 961 and a second inner wire 961 covered outside the second inner wire 961 Two sleeves 962, one end of the second inner cable 961 is connected to the fourth positioning portion 9132, and the other end is connected to the carriage 924, which can drive the rocker arm 923 to rotate. One end of the second sleeve 962 abuts against the second positioning portion 9122, and the other end abuts against the brake Master pump 922. The brake oil pipe 98 is connected to an oil outlet 9225 of the oil chamber 9224 and the brake caliper 941 so as to transmit the oil pressure in the cylinder 9223 to the brake caliper 941. Actuating the second brake operating device 92 by the rider will cause the second brake generating device 94 to generate a brake. Actuating the first brake operating device 91 by the rider will simultaneously cause the first brake generating device 93 and the second brake generating device 94 to generate brakes.

However, as shown in FIG. 10, in the configuration of the first brake operating device 91, the distance from the first pivot point 914 to the second pivot point 915 is the first length L1, and the distance from the first pivot point 914 to the end 9111 The distance is the second length L2, which is related to the force amplification ratio L2/L1 generated by the rider's operating force via the first operating lever 911. However, the first operating lever 911 and the first pivot point 914 are at the first The outer edge of the operating lever 911 must have a certain thickness H1, and the first operating lever 911 and the second pivot point 915 must also have a certain thickness H4 at the outer edge of the first operating lever 911. The fourth positioning portion of the balance piece 913 Since 9132 is connected to the second inner wire 961, considering the structural strength of the second inner wire 961 and the balancer 913, there will be equivalent thickness H3 and thickness H2 respectively. The cumulative thickness of the above thickness H1, thickness H2, thickness H3, and thickness H4 will affect The design distance of the first length L1, due to the force amplification ratio L2/L1, will affect the operating force output. If the first length L1 cannot be shortened appropriately, it will affect the rider’s force that cannot be amplified and eventually lead to insufficient braking force. .

This is the reason for the inventor. Based on the spirit of active invention, he eagerly thought of a linked braking system that could solve the above problems. After several research experiments, he finally completed the present invention.

The main purpose of the present invention is to provide a linked braking system, by adjusting the relative position of the first fixing frame, the first operating lever, the balancer and the first brake wire, so that the structural strength and the length of the first operating lever are not affected. In the case of, you can still increase the operating force amplification ratio through the above method to maintain the braking force of the brake generating device.

To achieve the above objective, the interlocking brake system of the present invention is installed on a vehicle and includes a first brake operating device, a second brake operating device, a first brake generating device, a second brake generating device, and a first brake Wire, a second brake wire and a brake hose.

The first brake operating device includes a first fixing frame arranged on a hand, a first operating lever pivotally connected to the first fixing frame with a first pivot point, and a second pivot point pivoting to the first A balance piece for operating the lever. The first fixing frame is provided with a first positioning portion and a second positioning portion. Both ends of the balance piece are respectively provided with a third positioning portion and a fourth positioning portion. The second pivot point is located at the third Between the positioning portion and the fourth positioning portion. The second brake operating device includes a hand brake master cylinder and a second operating lever pivotally connected to the brake master cylinder. The brake master cylinder includes a cylinder, a plunger, an oil chamber, and a connecting cylinder and The rebound spring of the plunger, when the plunger is actuated, makes the brake master cylinder generate an oil pressure.

The first brake generating device is a drum brake device. The device has a first brake rocker arm and a first brake fixing frame. Therefore, when the first brake generating device is driven by force, the first brake generating device will generate braking force. ; The second brake generating device is a disc brake device with a brake caliper and a brake disc, so when the second brake generating device is driven by hydraulic pressure, the second brake generating device will generate braking force.

The first brake wire includes a first inner wire and a first sleeve covering the outside of the first inner wire. One end of the first inner wire is connected to the third positioning part, and the other end can drive the first brake rocker arm. Connected to the first positioning portion, the other end abuts against the first brake fixing frame, that is, the first brake wire is connected between the first brake operating device and the first brake generating device.

The second brake wire includes a second inner wire and a second sleeve covering the outside of the second inner wire. One end of the second inner wire is connected to the fourth positioning portion, and the other end can drive the plunger. The other end of the two positioning parts abuts the brake master cylinder, that is, the second brake wire is connected between the first brake operating device and the second brake operating device to provide the effect of continuous braking.

The brake oil pipe is connected to one of the oil outlets of the oil chamber and the brake caliper, so as to transmit the oil pressure in the cylinder to the brake caliper.

Wherein, the fourth positioning part is arranged in the area formed by the three points of the first pivot point, the second pivot point, and the second positioning part. When the rider presses the first operating lever, it can be more The optimal operating force enlargement ratio increases the braking force of the first brake generating device and the second brake generating device. With the above design, the second pivot point can be maintained between the third positioning portion and the fourth positioning portion, and the distance of the first length L1 can be effectively shortened without changing the operating relationship and structural strength. The magnification ratio (the second length L2/first length L1) of the rider's actuation of the first operating lever can be increased, and the efficiency of generating the braking force corresponding to the first operating lever can be improved.

If the rider continues to increase the force to press the first operating lever, the outer edge of the balance member will interfere with the first operating lever to restrict the balance member from continuing to increase the force of the second inner wire. In this way, the second brake generating device corresponding to the second inner cable cannot be linked to generate more braking force, avoiding the risk of tire slipping out of control due to excessive braking.

In the above situation, the first inner line can continue to increase the force, and is not affected by the interference between the balance member and the first operating lever. In this way, when the rider continuously increases the force and presses the first operating lever, the first brake generating device can continuously increase the braking force, while the second brake generating device has an upper limit of braking force in order to prevent the front wheel brake from locking up. .

The above-mentioned second brake operating device may further include a rocker arm pivotally connected to the brake master cylinder. When the second operating lever rotates, the rocker arm can be pushed to rotate, so that the brake master cylinder generates an oil pressure. Thereby, through the setting of the rocker arm, when the rider presses the second operating lever, the applied force can be easily transmitted to the brake master cylinder, so that the second brake generating device provides a braking force.

In addition, the present invention further includes another interlocking braking system installed on a vehicle, including: a first brake operating device, a second brake operating device, a first brake generating device, a second brake generating device, and a first brake operating device. The brake wire, a second brake wire and a third brake wire.

The first brake operating device includes a first fixing frame arranged on a hand, a first operating lever pivotally connected to the first fixing frame with a first pivot point, and a second pivot point pivoting to the first A balance piece for operating the lever. The first fixing frame is provided with a first positioning portion and a second positioning portion. Both ends of the balance piece are respectively provided with a third positioning portion and a fourth positioning portion. The second pivot point is located at the third Between the positioning portion and the fourth positioning portion. The second brake operating device includes a second fixing frame arranged on a hand and a second operating lever pivotally connected to the second fixing frame.

The first brake generating device is a drum brake device. The device has a first brake rocker arm and a first brake fixing frame. Therefore, when the first brake generating device is driven by force, the first brake generating device will generate braking force. ; The second brake generating device is a drum brake device, the device has a second brake rocker arm and a second brake fixing frame, so when the second brake generating device is driven by force, the second brake generating device will generate a brake force.

The first brake wire includes a first inner wire and a first sleeve covering the outside of the first inner wire. One end of the first inner wire is connected to the third positioning part, and the other end can drive the first brake rocker arm. Connected to the first positioning portion, the other end abuts against the first brake fixing frame, that is, the first brake wire is connected between the first brake operating device and the first brake generating device.

The second brake wire includes a second inner wire and a second sleeve covering the outside of the second inner wire. One end of the second inner wire is connected to the fourth positioning part, and the other end can drive the second brake rocker arm to rotate. Abutting the second positioning portion, and the other end abutting the second brake fixing frame, that is, the second brake wire is connected between the first brake operating device and the second brake generating device to provide the effect of continuous braking.

The third brake wire includes a third inner wire and a third sleeve covering the outside of the third inner wire. One end of the third inner wire is connected to the second operating lever, and the other end can drive the second brake rocker arm. The second fixing frame is connected, and the other end abuts against the second brake fixing frame, that is, the third brake wire is connected between the second brake operating device and the second brake generating device.

Wherein, the fourth positioning part is arranged in the area formed by the three points of the first pivot point, the second pivot point, and the second positioning part. When the rider presses the first operating lever, it can be more The optimal operating force enlargement ratio increases the braking force of the first brake generating device and the second brake generating device.

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

Please refer to FIG. 1, which is a structural diagram of a linked braking system according to a first embodiment of the present invention. The figure shows a linked brake system installed on a vehicle, which mainly includes a first brake operating device 1, a second brake operating device 2, a first brake generating device 3, a second brake generating device 4, and a second brake operating device. A brake wire 5, a second brake wire 6 and a brake oil pipe 8.

Please refer to FIGS. 2 to 3 together, which are a partial cross-sectional view of the interlocking brake system and a cross-sectional view of the first brake operating device according to the first embodiment of the present invention. As shown in the figure, the first brake operating device 1 includes a first fixing frame 12, a first operating lever 11, and a balance member 13. The first fixing frame 12 is disposed on a handle 9, and the first fixing frame 12 is provided with a second A positioning portion 121 and a second positioning portion 122. The first operating lever 11 is pivotally connected to the first fixing frame 12 with a first pivot point 14, and the balance member 13 is pivotally connected to the first operating lever 11 with a second pivot point 15. Two ends of the balancer 13 are respectively provided with a third positioning portion 131 and a fourth positioning portion 132, and the second pivot point 15 is located between the third positioning portion 131 and the fourth positioning portion 132.

The second brake operating device 2 includes a brake master cylinder 22, a second operating lever 21, a rocker arm 23, and a carriage 24. The brake master cylinder 22 is arranged on a handle 9 and includes a cylinder 223 and a plunger 221 , An oil chamber 224 and a rebound spring 222, the plunger 221 and the rebound spring 222 are accommodated in the oil chamber 224, and can accommodate part of the hydraulic oil, the rebound spring 222 is located between the plunger 221 and the cylinder 223 and A spring force is applied to the plunger 221 by being compressed for a long time. In this embodiment, the rocker arm 23 is pivotally connected to the brake master cylinder 22, and can push the plunger 221 to move when rotating, so that the hydraulic oil in the oil chamber 224 generates oil pressure due to the action of the plunger 221, and the second operating lever 21 pivots Connected to the brake master cylinder 22, when the second operating lever 21 rotates, the rocker arm 23 can be pushed to rotate. The carriage 24 is pivotally connected to the rocker arm 23, and the rocker arm 23 can be rotated when the carriage 24 is moved by the connecting action. In addition, the second brake operating device 2 can also omit the setting of the rocker arm 23, and directly use the second brake wire 6 to pull the plunger 221 to generate oil pressure, which is not limited to the above form.

The first brake generating device 3 is a drum brake device. The device has a first brake rocker 31, a brake disc 35, two brake shoes 33, a wheel hub 36, and a first brake mount 37. The brake disc 35 device There is a brake cam 32 and a pin 34. When the first brake rocker arm 31 is rotated by force, the first brake cam 32 will rotate synchronously. At this time, the brake shoe 33 is supported by the brake cam 32 with the pin 34 as a fulcrum. The stretched brake shoe 33 will contact the wheel hub 36 and cause friction, so that the first brake generating device 3 generates a braking force. The second brake generating device 4 is a disc brake device. The device has a brake caliper 41 and a brake disc 42. When the brake caliper 41 is inputted with a hydraulic pressure, the brake caliper 41 will clamp the brake disc 42 so that The secondary brake generating device 4 generates braking force.

The first brake wire 5 includes a first inner wire 51 and a first sleeve 52 covering the outside of the first inner wire 51. One end of the first inner wire 51 is connected to the third positioning portion 131, and the other end can drive the first brake rocker arm 31. One end of the first sleeve 52 abuts the first positioning portion 121, and the other end abuts the first brake fixing frame 37; the second brake wire 6 includes a second inner wire 61 and a second inner wire that is wrapped around the second inner wire 61 Two sleeves 62. One end of the second inner wire 61 is connected to the fourth positioning portion 132, and the other end is connected to the carriage 24, which can drive the rocker arm 23 to rotate. Master pump 22. The brake oil pipe 8 is connected to an oil outlet 2241 of the oil chamber 224 and the brake caliper 41 so as to transmit the oil pressure in the cylinder 223 to the brake caliper 41.

Next, please refer to FIG. 4, which is a schematic diagram of the configuration of the first brake operating device of the interlocking brake system of the first embodiment of the present invention. As shown in the figure, the important feature of the present invention is that the fourth positioning portion 132 is arranged in the area A formed by the three points of the first pivot point 14, the second pivot point 15, and the second positioning portion 122. , And the second pivot point 15 is still between the third positioning portion 131 and the fourth positioning portion 132. When the rider presses the first operating lever 11, it has a better operating force amplification ratio L2/L1, which increases the braking force of the first brake generating device 3 and the second brake generating device 4.

Please refer to FIG. 5, which is an action diagram of the first brake operating device of the interlocking brake system of the first embodiment of the present invention. As shown in the figure, when the rider presses the first operating lever 11 to make the first operating lever 11 in the operated state, since the balancer 13 is located between the third positioning portion 131 and the fourth positioning portion 132, The force of the first inner wire 51 and the second inner wire 61 will be output in proportion to the distance between the first operating lever 11 and the second pivot point 15 and the fourth positioning portion 132 and the third positioning portion 131 respectively, and the force will be transmitted to the first brake The generating device 3 and the second brake generating device 4.

Please refer to FIG. 6, which is a continuous operation diagram of the first brake operating device of the interlocking brake system of the first embodiment of the present invention. If the rider continues to increase the force to press the first operating lever 11, the outer edge of the balance member 13 will interfere with the first operating lever 11 to restrict the balance member 13 from continuing to increase the force of the second inner wire 61. In this way, the second brake generating device 4 corresponding to the second inner wire 61 cannot generate more braking force in conjunction with each other, so as to avoid the risk of tire slipping out of control due to excessive braking.

In the above situation, the first inner wire 51 can continue to increase the force, and is not affected by the interference between the balance member 13 and the first operating lever 11. In this way, when the rider continues to increase the force and press the first operating lever 11, the first brake generating device 3 can continuously increase the braking force, and the second brake generating device 4 has braking force to prevent the front wheel brake from locking up. Upper limit.

Please refer to FIG. 7, which is a structural diagram of a linked braking system according to a second embodiment of the present invention. As shown in the figure, it is another interlocking brake system of the present invention, which basically changes the second brake generating device 4 of the first embodiment from a disc brake device to a drum brake device, including a first brake operating device 1 , A second brake operating device 2', a first brake generating device 3, a second brake generating device 4', a first brake wire 5, a second brake wire 6'and a third brake wire 7. The structural features and configurations of the first brake operating device 1, the first brake generating device 3, and the first brake wire 5 are the same as those of the first embodiment, and will not be repeated here.

The second brake operating device 2'includes a second fixing frame 25 arranged on a handle 9 and a second operating lever 21 pivotally connected to the second fixing frame 25. The second brake generating device 4'is a conventional drum brake, and includes a brake disc 44, a second brake rocker arm 43, and a second brake fixing frame 45. When the second brake rocker arm 43 rotates, the second brake The brake generating device 4'generates braking force.

The second brake wire 6'includes a second inner wire 61' and a second sleeve 62' that is wrapped around the second inner wire 61'. One end of the second inner wire 61' is connected to the fourth positioning portion 132, and the other end can drive the second inner wire 61'. For the second brake rocker arm 43, one end of the second sleeve 62' abuts against the second positioning portion 122, and the other end abuts against the second brake fixing frame 45; the third brake wire 7 includes a third inner wire 71 and is wrapped around the third inner wire 71 is a third sleeve 72 on the outside. One end of the third inner cable 71 is connected to the second operating lever 21, and the other end can drive the second brake rocker arm 43. One end of the third sleeve abuts against the second fixing frame 25 and the other end abuts The second brake fixing frame 45.

From the above two designs, the present invention can maintain the second pivot point between the third positioning portion and the fourth positioning portion, and can effectively shorten the first length L1 without changing the operating relationship and structural strength. The distance enables the rider to increase the force amplification ratio (the second length L2/first length L1) of the first operating lever (second length L2/first length L1) to increase the efficiency of the braking force generated by the first operating lever.

The above-mentioned embodiments are merely examples for the convenience of description, and the scope of rights claimed in the present invention should be subject to the scope of the patent application, rather than being limited to the above-mentioned embodiments.

1: The first brake operating device 11: The first operating lever 12: The first fixing frame 121: The first positioning part 122: second positioning part 13: balance piece 131: Third positioning part 132: The fourth positioning part 14: The first pivot point 15: second pivot point 2,2’: The second brake operating device 21: Second operating lever 22: Brake master cylinder 221: Plunger 222: rebound spring 223: cylinder 224: Oil Chamber 2241: oil outlet 23: rocker 24: carriage 25: The second fixing frame 3: The first brake generating device 31: The first brake rocker arm 32: Brake cam 33: Brake shoe 34: pin 35: brake disc 36: Wheel hub 37: The first brake mount 4,4’: The second brake generator 41: Brake calipers 42: brake disc 43: Second brake rocker arm 44: Brake Disc 45: Second brake mount 5: The first brake wire 51: first inside 52: first casing 6,6’: The second brake wire 61,61’: second inside 62, 62’: Second casing 7: The third brake wire 71: third inside 72: third casing 8: Brake hose 9: handle 91: The first brake operating device 911: The first operating lever 9111: end 9112: Grip 9113: root 912: first fixing frame 9121: The first positioning part 9122: second positioning part 913: balance piece 9131: The third positioning part 9132: Fourth positioning part 914: first pivot point 915: second pivot point 92: The second brake operating device 921: second operating lever 922: Brake Master Cylinder 9221: Plunger 9222: rebound spring 9223: cylinder 9224: oil chamber 9225: oil outlet 923: Rocker 924: carriage 93: The first brake generator 931: Brake Rocker Arm 932: Brake Cam 933: Brake shoe 934: pin 935: Brake Disc 936: Wheel Hub 937: Brake Mount 94: The second brake generator 941: Brake Calipers 942: Brake Disc 95: The first brake wire 951: first inside 952: first casing 96: Second brake wire 961: second inside 962: second casing 98: Brake hose 99: handle A: Block range L1: first length L2: second length H1~H4: Thickness:

FIG. 1 is a structural diagram of a linked braking system according to the first embodiment of the present invention. Figure 2 is a partial cross-sectional view of the interlocking brake system of the first embodiment of the present invention. 3 is a cross-sectional view of the first brake operating device of the interlocking brake system of the first embodiment of the present invention. 4 is a schematic diagram of the arrangement of the first brake operating device of the interlocking brake system of the first embodiment of the present invention. Fig. 5 is an operation diagram of the first brake operating device of the interlocking brake system of the first embodiment of the present invention. Fig. 6 is a continuous operation diagram of the first brake operating device of the interlocking brake system of the first embodiment of the present invention. Fig. 7 is a structural diagram of a linked braking system according to a second embodiment of the present invention. Figure 8 is a structural diagram of a conventional linked braking system. Figure 9 is a partial cross-sectional view of a conventional linked braking system. Fig. 10 is a cross-sectional view of the first brake operating device of the conventional linked brake system.

1: The first brake operating device

11: The first operating lever

122: second positioning part

131: Third positioning part

132: The fourth positioning part

14: The first pivot point

15: second pivot point

A: Block range

Claims (5)

A linked braking system is installed on a vehicle and includes: A first brake operating device includes a first fixing frame arranged on a hand, a first operating lever pivoted to the first fixing frame with a first pivot point, and a second pivot point pivoting The balance piece connected to the first operating lever, the first fixing frame is provided with a first positioning portion and a second positioning portion, both ends of the balance piece are respectively provided with a third positioning portion and a fourth positioning portion, the second The pivot point is located between the third positioning portion and the fourth positioning portion; A second brake operating device includes a hand brake master cylinder and a second operating lever pivotally connected to the brake master cylinder. The brake master cylinder includes a cylinder, a plunger, an oil chamber, and a The rebound spring connecting the cylinder and the plunger, when the plunger is actuated, causes the master brake cylinder to generate an oil pressure; A first brake generating device, which is a drum brake device, the device has a first brake rocker arm and a first brake fixing frame; A second brake generating device is a disc brake device with a brake caliper and a brake disc; A first brake wire includes a first inner wire and a first sleeve covering the outside of the first inner wire. One end of the first inner wire is connected to the third positioning portion, and the other end can drive the first brake rocker arm, One end of the first sleeve abuts against the first positioning portion, and the other end abuts against the first brake fixing frame; A second brake wire includes a second inner wire and a second sleeve covering the outside of the second inner wire. One end of the second inner wire is connected to the fourth positioning portion, and the other end can drive the plunger to act. One end of the two sleeves abuts against the second positioning portion, and the other end abuts against the brake master cylinder; and A brake oil pipe connected to an oil outlet of the oil chamber and the brake caliper; Wherein, the fourth positioning portion is arranged within a block range formed by the three points of the first pivot point, the second pivot point, and the second positioning portion, and when the rider presses the first operating lever , Can have a better operation force amplification ratio, increase the braking force of the first brake generating device and the second brake generating device. A linked braking system is installed on a vehicle and includes: A first brake operating device includes a first fixing frame arranged on a hand, a first operating lever pivoted to the first fixing frame with a first pivot point, and a second pivot point pivoting The balance piece connected to the first operating lever, the first fixing frame is provided with a first positioning portion and a second positioning portion, both ends of the balance piece are respectively provided with a third positioning portion and a fourth positioning portion, the second The pivot point is located between the third positioning portion and the fourth positioning portion; A second brake operating device, including a second fixing frame arranged on a hand and a second operating lever pivotally connected to the second fixing frame; A first brake generating device, which is a drum brake device, the device has a first brake rocker arm and a first brake fixing frame; A second brake generating device, which is a drum brake device, equipped with a second brake rocker arm and a second brake fixing frame; A first brake wire includes a first inner wire and a first sleeve covering the outside of the first inner wire. One end of the first inner wire is connected to the third positioning portion, and the other end can drive the first brake rocker arm, One end of the first sleeve abuts against the first positioning portion, and the other end abuts against the first brake fixing frame; A second brake wire includes a second inner wire and a second sleeve covering the outside of the second inner wire. One end of the second inner wire is connected to the fourth positioning portion, and the other end can drive the second brake rocker arm, One end of the second sleeve abuts against the second positioning portion, and the other end abuts against the second brake fixing frame; and A third brake wire includes a third inner wire and a third sleeve covering the outside of the third inner wire. One end of the third inner wire is connected to the second operating lever, and the other end can drive the second brake rocker arm, One end of the third sleeve abuts against the second fixing frame, and the other end abuts against the second brake fixing frame; Wherein, the fourth positioning portion is arranged within a block range formed by the three points of the first pivot point, the second pivot point, and the second positioning portion, and when the rider presses the first operating lever , Can have a better operation force amplification ratio, increase the braking force of the first brake generating device and the second brake generating device. For example, the interlocking brake system of item 1 or item 2 of the scope of patent application, in which, when the rider continues to increase the force and press the first operating lever, the outer edge of the balance member will interfere with the first operating lever , In order to limit the balance piece to continue to increase the force of the second inner wire. For example, the interlocking brake system of item 3 of the scope of patent application, wherein the first inner wire can continue to increase the applied force without being affected by the interference between the balance member and the first operating lever. For example, the interlocking brake system of item 1 of the scope of patent application, wherein the second brake operating device further includes a rocker arm pivotally connected to the brake master cylinder. When the second operating lever rotates, the rocker arm can be rotated to make The master brake cylinder generates an oil pressure.

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