TW202202398A - Brake pump for interlocking brake system - Google Patents

Abstract

The present invention relates to a brake pump for an interlocking brake system. The interlocking brake system mainly includes a first brake pump and a second brake pump. The first brake pump includes a first cylinder, a first brake lever, an actuating lever and a brake wire. The first cylinder has a first oil chamber, a first plunger and a first spring. The first brake lever is pivotally connected to the first cylinder and is provided with a rotating shaft, and the actuating rod is pivotally connected to the first cylinder. The brake wire includes a first sleeve, a second sleeve, and an inner wire passing through the first sleeve and the second sleeve. Wherein, the inner wire section between the first sleeve and the second sleeve surrounds the rotating shaft. As such, in addition to retaining the original interlocking braking performance, the present invention can make the brake wire have better durability, and at the same time can take the rider's pressing feel into account when operating the brake to improve the service life and operability of the interlocking brake system.

Description

Brake master cylinder for linked brake system

The present invention relates to a brake master cylinder for a linked brake system, especially a brake master cylinder suitable for a locomotive for a linked brake system.

In order to improve the riding safety of locomotives, it is necessary to develop a linked brake system to effectively shorten the braking distance, especially the disc brake system equipped with the front and rear brake systems. Control costs can also be taken into account. The conventional technology is the interlocking braking system disclosed in Taiwan Patent Publication No. TW I653169. Please refer to FIG. 17 , which is a partial cross-sectional view of the conventional interlocking braking system. As shown in the figure, the conventional interlocking brake system mainly includes a first brake master cylinder 91, a second brake master cylinder 92, a first brake caliper 93, a second brake caliper 94, a brake wire 98, a first The brake oil pipe 96 and a second brake oil pipe 97 . The first brake master cylinder 91 includes a first cylinder block 911 , a first brake lever 912 and an actuating rod 915 .

The actuating rod 915 is installed on the first pivot point 9111 of the first cylinder 911 . The actuating rod 915 can push a first plunger 913 , so that the first cylinder 911 sends a hydraulic pressure to the first brake caliper 93 . The first brake lever 912 is mounted on the second pivot point 9112 of the first cylinder 911 , the rocker arm 925 is mounted on the third pivot point 9221 of the second cylinder 921 , the rocker arm 925 can actuate a second column The movement of the plug 923 causes the second cylinder 921 to send a hydraulic pressure to the second brake caliper 94. The brake wire 98 includes a first sleeve 981 and an inner wire 982 passing through the first sleeve 981. The inner wire 982 connects the first sleeve 981. The force exerted by a brake lever 912 is transmitted to the rocker arm 925 , one end of the first sleeve 981 is in contact with the actuating rod 915 , and the other end is in contact with the second cylinder 921 .

When the brake lever 912 is operated, the inner wire 982 pulls the rocker arm 925 with all the force exerted by the brake lever 912, and the reaction force of the first sleeve 981 pushes the actuating rod 915, so that the first brake caliper 93 and the second brake caliper 94 actuate to generate braking force. The brake wire 98 is disposed between the first brake master cylinder 91 and the second brake master cylinder 92 , and the path of the brake wire 98 is often in a bent state. Since the brake wire 98 must bear all the force exerted by the first brake lever 912, therefore The brake wire 98 must have a certain strength to avoid breaking, and the opposite first sleeve 981 must also have sufficient rigidity to avoid excessive compression due to the reaction force of the wire, which makes the hand feel soft, but the sleeve with sufficient rigidity is bent. When the brake lever 912 is not actuated, the first plunger 913 will be forced by the actuating rod 915, causing the pressure of the first brake caliper 93 to be unable to be released.

Because of this, the inventor, in the spirit of active invention, urgently thought of a brake master cylinder for a linked brake system that can solve the above problems, and finally completed the present invention after several researches and experiments.

The main purpose of the present invention is to provide a brake master cylinder for a linked braking system. By changing the arrangement of the first operating lever, the actuating lever and the braking wire, in addition to maintaining the original linked braking performance, the braking wire can be adjusted It has better durability, and can also take into account the pressing feel of the rider when operating the brake, so as to improve the service life and operability of the linked brake system.

In order to achieve the above object, the brake master cylinder for the linked brake system of the present invention is a first brake master cylinder in the linked brake system, comprising a first cylinder, a first brake lever, an actuating rod and a The brake wire, the first cylinder has a first oil chamber, a first plunger and a first spring, the first brake lever is pivotally connected to the first cylinder, and is provided with a rotating shaft, and the actuating rod is pivoted to the first On the cylinder body, and one end of the actuating rod has a first push portion for pushing the first plunger, the brake wire includes a first sleeve, a second sleeve, and a first sleeve and a first sleeve. One end of the inner wire in the two sleeves, the first sleeve and the second sleeve are respectively fixed on the actuating rod. It is characterized in that: the inner wire section between the first sleeve and the second sleeve surrounds the rotating shaft.

Secondly, another designed brake master cylinder for a linked brake system of the present invention is a first brake master cylinder in the linked brake system, comprising a first cylinder, a first brake lever, an actuating rod, and A brake wire, the first cylinder has a first oil chamber, a first plunger and a first spring, the first brake lever is pivotally connected to the first cylinder, and is provided with a rotating shaft, and the actuating rod is pivotally connected to the first cylinder. A cylinder body, and one end of the actuating rod has a first push portion for pushing the first plunger, the brake wire includes a first sleeve and an inner wire passing through the first sleeve, the first sleeve One end of the tube is fastened to the actuating rod. It is characterized in that: one end of the inner wire is fastened on a fixed point of the actuating rod, and the inner wire section between the first sleeve and the fixed point surrounds the rotating shaft.

Furthermore, another design of the brake master cylinder for the linked brake system of the present invention is a first brake master cylinder in the linked brake system, including a first cylinder block, a first brake lever, and an actuating rod. and a brake wire, the first cylinder has a first oil chamber, a first plunger and a first spring, the first brake lever is pivotally connected to the first cylinder, and is provided with a rotating shaft, and the actuating rod is pivotally connected On the first cylinder, and one end of the actuating rod has a first push portion for pushing the first plunger, the brake wire includes a first sleeve and an inner wire penetrated in the first sleeve, One end of the first sleeve is fastened on the first cylinder. It is characterized in that: one end of the inner wire is fastened on a fixed point of the actuating rod, and the inner wire section between the first sleeve and the fixed point surrounds the rotating shaft.

With the above design, when the present invention transmits the force, the pulley relationship is used to pull the inner wire of the rotating shaft, so the brake wire does not need to use the brake wire sleeve specification with higher rigidity to achieve the effect of interlocking braking, and for the first The force exerted by the sleeve on the actuating rod caused by the bending of the path of the assembly layout is also relatively small, which does not affect the normal operation of the actuating rod, so it will not cause problems such as the inability to release the pressure of the first brake caliper.

In order to construct a perfect interlocking braking system, the present invention not only has the above-mentioned first brake master cylinder, but also can connect the first brake master cylinder and a second brake master cylinder, so as to achieve the linkage of both wheels with disc brake function brake system.

The above-mentioned interlocking brake system may further include a second brake master cylinder, which includes a second cylinder block, a second brake lever and a rocker arm, the second cylinder block has a second oil chamber, a second plunger and a The second spring is used for accommodating hydraulic oil and providing oil pressure changes in a timely manner. The second brake lever and the rocker arm are pivotally connected to the second cylinder, and the rocker arm has a second push portion for pushing against the second plunger. Therefore, when the first brake lever is continuously pressed, the first plunger will exert a reaction force on the actuating lever to resist the rotation of the actuating lever. At this time, the rotating shaft of the first brake lever will be away from the actuating lever, so that the rocker arm pushes the first brake lever. Two plungers, let the second brake master cylinder generate a hydraulic pressure for the second brake caliper to act to generate a linked brake.

The above-mentioned interlocking brake system may further comprise a first brake caliper and a second brake caliper, the first brake caliper is connected to the first cylinder block by a first brake oil pipe, and the second brake caliper is connected to the second brake oil pipe by a second brake oil pipe. cylinder block. In this way, when the first brake caliper is input with hydraulic pressure, it can generate braking force on the rear wheel brake disc to decelerate or stop the movement of the vehicle; when the second brake caliper is input with hydraulic pressure, the front wheel brake disc can be applied Generates braking force to slow down or stop the vehicle.

Both the above summary and the following detailed description are exemplary in nature and are intended to further illustrate the scope of the present invention. The other objects and advantages of the present invention will be explained in the following descriptions and drawings.

Please refer to FIG. 1 to FIG. 3 , which are the structure diagram of the interlocking brake system according to the first embodiment of the present invention, the side view of the first brake master cylinder, and the cross-sectional view A-A of FIG. 2 , respectively. The figure shows a linked brake system, which mainly includes a first brake master cylinder 1, a second brake master cylinder 2, a first brake caliper 3, a second brake caliper 4, a brake wire 8, a first brake oil pipe 6 and a second brake Tubing 7. The first master brake cylinder 1 and the second master brake cylinder 2 can respectively control the front wheel and rear wheel brake systems, or control the front wheel and rear wheel brake systems in a linked manner.

As shown in FIG. 3 , the first brake master cylinder 1 includes a first cylinder 11 , a first brake lever 12 , an actuating rod 15 and a brake wire 8 . The first cylinder 11 has a first oil chamber 14 , A first plunger 13 and a first spring 16, the first oil chamber 14 is filled with hydraulic oil, when the first plunger 13 moves, the first spring 16 is compressed, and part of the hydraulic oil in the first oil chamber 14 will It is pushed out of the first cylinder block 11 , so that the first brake master cylinder 1 generates an oil pressure. The actuating rod 15 and the first cylinder 11 are pivotally connected to the first pivot point 111 , and are provided with a first wire fixing seat 151 , a second wire fixing seat 153 and a first wire fixing seat 153 for pushing the first plunger 13 . In the push portion 152, the first pivot point 111 is between the first wire fixing seat 151 and the first push portion 152. When the actuating rod 15 rotates, the first push portion 152 can push the first plunger 13 to move, and the first push portion 152 can push the first plunger 13 to move. The brake lever 12 and the first cylinder 11 are pivotally connected to the second pivot point 112 . The first brake lever 12 can be used by the rider to operate the brake. The first brake lever 12 has one end portion 123 , a push portion 121 and a rotating shaft 122.

As shown in FIG. 1 , the second brake master cylinder 2 includes a second cylinder 21 , a second brake lever 22 and a rocker arm 25 . The second cylinder 21 has a second oil chamber (not shown), a first Two plungers 23 and a second spring (not shown), when the second plunger 23 moves, the second spring is compressed, and part of the hydraulic oil in the second oil chamber will be pushed out of the second cylinder 21 to make the second brake Pump 2 generates an oil pressure. The second brake lever 22 and the rocker arm 25 are pivotally connected to the third pivot point 221 with the second cylinder 21 at the same time. Therefore, when the rocker arm 25 rotates, the second plunger 23 will be pushed; When the lever 22 is turned, the rocker arm 25 is pushed.

Among them, the first brake oil pipe 6 can transmit the hydraulic oil of the first brake master cylinder 1 to the first brake caliper 3, so when the first brake caliper 3 is input with oil pressure, the rear wheel brake disc (not shown) Generates braking force to slow down or stop the vehicle. The second brake oil pipe 7 can transmit the hydraulic oil of the second brake master cylinder 2 to the second brake caliper 4, so when the second brake caliper 4 is input with oil pressure, it can generate braking force on the front wheel brake disc (not shown) , slow down or stop the vehicle.

In this embodiment, the brake wire 8 used in the present invention includes a first sleeve 81 , a second sleeve 83 and an inner wire 82 passing through the first sleeve 81 and the second sleeve 83 , One end of the first bushing 81 is mounted on the second cylinder 21 , the other end is mounted on the first wire fixing seat 151 , one end of the second bushing 83 is mounted on the second wire mounting seat 153 , and the other end is provided with a nut 832 screwed together The threaded end 831, wherein the nut 832 and the threaded end 831 are convenient for the rider to adjust the tolerance and clearance of the brake wire 8. The two ends of the inner wire 82 are respectively a first end 821 and a second end 822 , the first end 821 can pull the rocker arm 25 , and the second end 822 is mounted on the nut 832 and is located between the first sleeve 81 and the second end 822 . The section of the inner wire 82 between the two sleeves 83 must surround the shaft 122 .

Please refer to FIG. 4 , which is a cross-sectional view of the initial operation state of the first brake master cylinder according to the first embodiment of the present invention. When the first brake lever 12 is initially operated, the rotating shaft 122 will pull the inner wire 82, and the first sleeve 81 and the second sleeve 83 will generate a reaction force to push the actuating rod 15, so that the first brake master cylinder 1 generates an oil Press to make the first brake caliper 3 generate braking force.

Please refer to FIG. 5 , which is a cross-sectional view of the first embodiment of the first brake master cylinder in the interlocking braking state of the present invention. When the first brake lever 12 is continuously pressed, the first plunger 13 will exert a reaction force on the actuating rod 15 to resist the rotation of the actuating rod 15. At this time, the rotating shaft 122 will be away from the actuating rod 15, so that the rocker arm 25 pushes the second The plunger 23 allows the second brake master cylinder 2 to generate a hydraulic pressure for the second brake caliper 4 to act to generate a linked brake. Since the rotation shaft 122 uses the pulley relationship to pull the inner wire 82, the maximum force obtained by the rocker arm 25 is only half of the pulley force. At this time, the size of the brake wire 8 can be replaced by a thinner throttle wire. Since the inner cable 82 uses a thinner throttle cable, the sleeve 81 does not need to use the brake cable sleeve specification with higher rigidity. Therefore, the first sleeve 81 is bent on the path of the assembly layout. 15 is relatively small, and does not affect the normal operation of the actuating rod 15, and the force exerted by the first sleeve 81 and the second sleeve 83 on the actuating rod 15 is the same as that of the axle 122, that is, The force exerted by the rider on the first brake lever 12 and the actuating rod 15 can also exert the same force on the first plunger 13 , and the system will not reduce the force exerted on the first brake caliper 3 due to the interlocking braking effect.

Please refer to FIGS. 6 to 8 , which are respectively a cross-sectional view, an initial action cross-sectional view, and a continuous action cross-sectional view of the brake wire of the first brake master cylinder according to the first embodiment of the present invention. As shown in FIG. 7 , after the end portion 123 of the first brake lever 12 moves the stroke S, the actuating rod 15 will not rotate due to the abnormality of the brake wire 8 , and the push portion 121 will approach the first push portion 152 at this time. As shown in FIG. 8 , when the first brake lever 12 continues to exert force, the push portion 121 will force the first push portion 152 to rotate, so that the first brake master cylinder 1 provides a hydraulic pressure to make the first brake caliper 3 actuate the brake, and finally The vehicle still retains the braking function without a complete failure of the braking function.

Please refer to FIG. 9 and FIG. 10 , which are a structural diagram of a linked brake system according to a second embodiment of the present invention and a cross-sectional view of the first brake master cylinder, respectively. The figure shows a linked brake system, which mainly includes a first brake master cylinder 1', a second brake master cylinder 2, a first brake caliper 3, a second brake caliper 4, a brake wire 8, a first brake oil pipe 6 and a second brake Brake hose 7. The first master brake cylinder 1' and the second master brake cylinder 2 can respectively control the front wheel and rear wheel brake systems, or control the front wheel and rear wheel brake systems in linkage.

The structural features of the interlocking brake system are basically the same as those of the first embodiment, and will not be repeated here. As shown in the figure, the first brake master cylinder 1 ′ includes a first cylinder 11 , a first brake lever 12 , an actuating rod 15 ′ and a brake wire 8 . The first cylinder 11 has a first oil chamber 14 , a first plunger 13 and a first spring 16, the first oil chamber 14 is filled with hydraulic oil, when the first plunger 13 moves, the first spring 16 is compressed, and part of the hydraulic oil in the first oil chamber 14 It will be pushed out of the first cylinder block 11 so that the first brake master cylinder 1 will generate an oil pressure. The actuating rod 15 ′ and the first cylinder 11 are pivotally connected to the first pivot point 111 , and are provided with a first wire fixing seat 151 and a first pushing portion 152 for pushing the first plunger 13 . The contact 111 is located between the first wire fixing seat 151 and the first push portion 152 . When the actuating rod 15 ′ rotates, the first push portion 152 can push the first plunger 13 to move, and the first brake lever 12 and the first The cylinder 11 is pivotally connected to the second pivot point 112 . The first brake lever 12 can be used by the rider to operate the brake. The first brake lever 12 has one end portion 123 , a push portion 121 and a rotating shaft 122 .

In this embodiment, the brake wire 8 includes a first sleeve 81 and an inner wire 82 passing through the first sleeve 81. One end of the first sleeve 81 is installed in the second cylinder 21, and the other end is installed in the second cylinder block 21. The first wire fixing seat 151 . The two ends of the inner wire 82 are a first end 821 and a second end 822 respectively, the first end 821 can pull the rocker arm 25, and the second end 822 is mounted on a fixed point 154 of the actuating rod 15' and is located at the first end 821. The section of the inner wire 82 between the sleeve 81 and the fixing point 154 must encircle the shaft 122 .

Please refer to FIG. 11 , which is a cross-sectional view of the initial operation state of the first brake master cylinder according to the second embodiment of the present invention. When the first brake lever 12 is initially operated, the actuating rod 15' is rotated by the combined force applied by the inner wire 82 and the first sleeve 81, so that the first brake master cylinder 1 sends an oil pressure to the first brake caliper 3, so that the first brake Caliper 3 produces braking force.

Please refer to FIG. 12 , which is a cross-sectional view of a state of interlocking braking of the first brake master cylinder according to the second embodiment of the present invention. When the first brake lever 12 is continuously pressed, the first plunger 13 will exert a reaction force on the actuating rod 15' to resist the rotation of the actuating rod 15'. Push the second plunger 23 to make the second brake master cylinder 2 generate a hydraulic pressure for the second brake caliper 4 to act to generate a linked brake.

Please refer to FIG. 13 and FIG. 14 , which are a structural diagram of a linked brake system according to a third embodiment of the present invention and a cross-sectional view of the first brake master cylinder, respectively. The figure shows a linkage braking system, which mainly includes a first brake master cylinder 1", a second brake master cylinder 2, a first brake caliper 3, a second brake caliper 4, a brake wire 8, a first brake oil pipe 6 and a second brake Brake oil pipe 7. The first brake master cylinder 1" and the second brake master cylinder 2 can respectively control the front wheel and rear wheel brake system, or control the front wheel and rear wheel brake system in linkage.

The structural features of the interlocking brake system are basically the same as those of the first embodiment, and will not be repeated here, the only difference is that the first master cylinder 1 ″ of this embodiment is slightly changed in the structural configuration. As shown in the figure, the first brake master cylinder 1 ″ includes a first cylinder 11 , a first brake lever 12 , an actuating rod 15 ″ and a brake wire 8 . The first cylinder 11 has a first oil chamber 14 , a first plunger 13 and a first spring 16, the first oil chamber 14 is filled with hydraulic oil, when the first plunger 13 moves, the first spring 16 is compressed, and part of the hydraulic oil in the first oil chamber 14 It will be pushed out of the first cylinder 11, so that the first brake master cylinder 1 will generate an oil pressure. The actuating rod 15" and the first cylinder 11 are pivotally connected to the first pivot point 111, and there is a The first push portion 152 of the plunger 13, when the actuating rod 15″ rotates, the first push portion 152 can push the first plunger 13 to move, the first brake lever 12 and the first cylinder 11 are pivotally connected to the second pivot connection At point 112 , the first brake lever 12 can be used by the rider to operate the brake. The first brake lever 12 has one end portion 123 , a push portion 121 and a rotating shaft 122 .

In this embodiment, the brake wire 8 includes a first sleeve 81 and an inner wire 82 passing through the first sleeve 81. One end of the first sleeve 81 is installed in the second cylinder 21, and the other end is installed in the second cylinder block 21. The first wire fixing seat 113 located on the first cylinder 11 . The two ends of the inner wire 82 are a first end 821 and a second end 822 respectively, the first end 821 can pull the rocker arm 25, and the second end 822 is installed on a fixed point 154 of the actuating rod 15", and is located at the first end 821. The section of the inner wire 82 between the sleeve 81 and the fixing point 154 must encircle the shaft 122 .

Please refer to FIG. 15 , which is a cross-sectional view of the initial operation state of the first brake master cylinder according to the third embodiment of the present invention. When the first brake lever 12 is initially operated, the actuating rod 15" is forced by the inner wire 82 to rotate, so that the first brake master cylinder 1 sends an oil pressure to the first brake caliper 3, so that the first brake caliper 3 generates braking force.

Please refer to FIG. 16 , which is a cross-sectional view of the interlocking braking state of the first brake master cylinder according to the third embodiment of the present invention. When the first brake lever 12 is continuously pressed, the first plunger 13 will exert a reaction force on the actuating rod 15" to resist the rotation of the actuating rod 15". Push the second plunger 23 to make the second brake master cylinder 2 generate a hydraulic pressure for the second brake caliper 4 to act to generate a linked brake.

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

1, 1’, 1”: 1st brake master cylinder 11: The first cylinder 111: The first pivot point 112: Second pivot point 113: The first wire holder 12: First brake lever 121: Push Department 122: Spindle 123: End 13: First plunger 14: The first oil chamber 15, 15', 15": Actuator lever 151: The first wire holder 152: The first push 153: Second wire holder 154: Fixed point 16: First Spring 2: The second brake master cylinder 21: The second cylinder 22: Second brake lever 221: The third pivot point 23: Second plunger 25: rocker arm 3: The first brake caliper 4: Second brake caliper 6: The first brake hose 7: Second brake hose 8: Brake wire 81: The first casing 82: Inside 821: First End 822: Second End 83: Second casing 831: Thread end 832: Nut 91: The first brake master cylinder 911: The first cylinder 9111: First pivot point 9112: Second pivot point 912: 1st brake lever 913: First plunger 915: Actuator 92: The second brake master cylinder 921: Second cylinder 9221: The third pivot point 923: Second plunger 925: rocker arm 93: First brake caliper 94: Second brake caliper 96: First brake hose 97: Second brake hose 98: Brake wire 981: First casing 982: Inside S: itinerary

FIG. 1 is a structural diagram of a linkage braking system according to a first embodiment of the present invention. FIG. 2 is a side view of the first brake master cylinder according to the first embodiment of the present invention. FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2 . 4 is a cross-sectional view of an initial state of operation of the first brake master cylinder according to the first embodiment of the present invention. FIG. 5 is a cross-sectional view of the first embodiment of the present invention in a state of interlocking braking of the first master cylinder of the brake. 6 is a cross-sectional view of the broken state of the brake wire of the first brake master cylinder according to the first embodiment of the present invention. 7 is an initial actuation sectional view of the broken state of the brake wire of the first brake master cylinder according to the first embodiment of the present invention. 8 is a sectional view of the continuous operation of the first embodiment of the present invention in which the brake wire of the first brake master cylinder is broken. FIG. 9 is a structural diagram of a linked braking system according to a second embodiment of the present invention. 10 is a cross-sectional view of the first brake master cylinder according to the second embodiment of the present invention. 11 is a cross-sectional view of an initial state of operation of the first brake master cylinder according to the second embodiment of the present invention. FIG. 12 is a cross-sectional view of the interlocking braking state of the first brake master cylinder according to the second embodiment of the present invention. FIG. 13 is a structural diagram of a linkage braking system according to a third embodiment of the present invention. 14 is a cross-sectional view of the first brake master cylinder according to the third embodiment of the present invention. 15 is a cross-sectional view of an initial state of operation of the first brake master cylinder according to the third embodiment of the present invention. FIG. 16 is a cross-sectional view of the interlocking braking state of the first brake master cylinder according to the third embodiment of the present invention. 17 is a partial cross-sectional view of a conventional interlocking brake system.

1: The first brake master cylinder

11: The first cylinder

111: The first pivot point

112: Second pivot point

12: First brake lever

121: Push Department

122: Spindle

123: End

13: First plunger

14: The first oil chamber

15: Action lever

151: The first wire holder

152: The first push

153: Second wire holder

16: First Spring

6: The first brake hose

81: The first casing

82: Inside

822: Second End

83: Second casing

831: Thread end

832: Nut

Claims (5)

A brake master cylinder for a linked brake system, comprising: A first brake master cylinder includes a first cylinder, a first brake lever, an actuating rod and a brake wire, the first cylinder has a first oil chamber, a first plunger and a first spring , the first brake lever is pivotally connected to the first cylinder body, and is provided with a rotating shaft, the actuating rod is pivotally connected to the first cylinder body, and one end of the actuating rod has a first push portion for resisting Push the first plunger, the brake wire includes a first sleeve, a second sleeve and an inner wire passing through the first sleeve and the second sleeve, the first sleeve and the first sleeve One ends of the two sleeves are respectively fixed on the actuating rod; It is characterized in that: the inner wire section between the first sleeve and the second sleeve surrounds the rotating shaft. A brake master cylinder for a linked brake system, comprising: A first brake master cylinder includes a first cylinder, a first brake lever, an actuating rod and a brake wire, the first cylinder has a first oil chamber, a first plunger and a first spring , the first brake lever is pivotally connected to the first cylinder body, and is provided with a rotating shaft, the actuating rod is pivotally connected to the first cylinder body, and one end of the actuating rod has a first push portion for resisting Pushing the first plunger, the brake wire includes a first sleeve and an inner wire passing through the first sleeve, and one end of the first sleeve is fastened to the actuating rod; It is characterized in that: one end of the inner wire is fastened on a fixed point of the actuating rod, and the inner wire section between the first sleeve and the fixed point surrounds the rotating shaft. A brake master cylinder for a linked brake system, comprising: A first brake master cylinder includes a first cylinder, a first brake lever, an actuating rod and a brake wire, the first cylinder has a first oil chamber, a first plunger and a first spring , the first brake lever is pivotally connected to the first cylinder body, and is provided with a rotating shaft, the actuating rod is pivotally connected to the first cylinder body, and one end of the actuating rod has a first push portion for resisting Pushing the first plunger, the brake wire includes a first sleeve and an inner wire passing through the first sleeve, and one end of the first sleeve is fastened on the first cylinder; It is characterized in that: one end of the inner wire is fastened on a fixed point of the actuating rod, and the inner wire section between the first sleeve and the fixed point surrounds the rotating shaft. The brake master cylinder for a linked brake system according to any one of claim 1 to claim 3, wherein the linked brake system further includes a second brake master cylinder, which includes a second cylinder and a second brake lever and a rocker arm, the second cylinder has a second oil chamber, a second plunger and a second spring, the second brake lever and the rocker are pivotally connected to the second cylinder, and the The rocker arm has a second push portion for pushing against the second plunger. The brake master cylinder for a linked brake system according to any one of claim 1 to claim 3, wherein the linked brake system further includes a first brake caliper and a second brake caliper, the first brake caliper is connected to a The first brake oil pipe is connected to the first cylinder block, and the second brake caliper is connected to the second cylinder block by a second brake oil pipe.

Images