TW202413160A - Interlocking braking system - Google Patents

Abstract

The present invention relates to an interlocking braking system, comprising an interlocking braking member and an independent braking member. The interlocking braking member comprises a first brake master cylinder, a first brake caliper, a brake wire and a first brake oil pipe. The first brake master cylinder comprises a first brake lever, a lever, a first cylinder, a first plunger, a first spring and a first oil chamber. The lever is pivoted to the first cylinder through a first pivot point. The first brake lever is pivoted to the lever through a second pivot point, and the first brake lever is provided with a first positioning portion and a second positioning portion. In addition, the first brake oil pipe can transmit the hydraulic oil of the first brake master cylinder to the first brake caliper so as to generate the braking effect, and the brake wire can transmit the applied force of the first positioning portion to the independent brake member so as to achieve the interlocking braking effect. It is characterized in that: there is a gap between the second positioning portion and the lever, and an elastic member is arranged in the gap. In this way, the instant change of the softness and hardness of the operation can be reduced by using the elastic member.

Description

Linked brake system

The present invention relates to a linkage brake system, and more particularly to a linkage brake system suitable for a motorcycle.

In order to improve motorcycle riding safety, the government has introduced vehicle safety-related laws to promote the installation of linked brake systems to effectively shorten the braking distance.

Please refer to Figures 1 to 4, which are respectively a diagram of a conventional linked brake system, a view in the direction of A in Figure 1, an A-A cross-sectional view in Figure 2, and an enlarged view of the first brake master cylinder. The figure shows a conventional linkage brake system 9, including an independent brake unit 9a and a linkage brake unit 9b. The linkage brake unit 9b includes a first brake master cylinder 91, a first brake caliper 93, a first brake oil pipe 96 and a brake wire 98. The first brake master cylinder 91 includes a first cylinder 911, a first brake lever 912, a first plunger 913, a first oil chamber 914, a lever 915 and a first spring 916. The first cylinder 911 has a space for accommodating the first plunger 913, the first oil chamber 914 and the first spring 916. The first spring 916 connects the first cylinder 911 and the first plunger 913 and is long-lasting. A spring force is applied to the first piston 913, the lever 915 is pivoted to the first cylinder 911 with a first pivot point 9111, the lever 915 has a push portion 9151 that can directly or indirectly push the first piston 913, the first brake lever 912 is pivoted to the lever 915 with a second pivot point 9152, the first brake lever 912 is provided with a first positioning portion 9121 and a second positioning portion 9122; wherein, the first brake oil pipe 96 can transport the hydraulic oil of the first brake master cylinder 91 to the first brake caliper 93 to produce a braking effect, and the brake wire 98 can transmit the force of the first positioning portion 9121 to the independent brake unit 9a to achieve a linked braking effect.

Please refer to Figures 5 to 7, which are respectively a cross-sectional view of the first actuation state of the first brake master cylinder of the conventional linkage brake system, a cross-sectional view of the second actuation state, and a force curve diagram of the force applied by the brake wire and the oil pressure of the first oil chamber. As shown in Figures 3 and 5, when the first brake lever 912 is actuated, the force applied by the first positioning portion 9121 will be transmitted to a drag plate 926 of the independent brake unit 9a via the brake wire 98, and at the same time, the second pivot point 9152 will receive a thrust from the first brake lever 912, so that the push portion 9151 of the lever 915 drives the first plunger 913 to move, so that the first oil chamber 914 generates oil pressure. At this time, the relationship between the force borne by the brake wire 98 and the oil pressure is shown in FIG7. The vertical axis of FIG7 is the force borne by the brake wire 98, and the horizontal axis is the oil pressure generated by the first oil chamber 914 of the first brake master cylinder 91 through the push of the first plunger 913. The relationship presented in the first operating state of the learned linkage brake system shown in FIG5 is shown as the line segment L1 in FIG7. As shown in FIG6, when the first brake lever 912 continues to increase its force, the second positioning portion 9122 will contact the lever 915. The force condition at the moment of contact is shown as point P1 in FIG7. If the first brake lever 912 continues to be applied at this time, the increase in the force of the first positioning portion 9121 will decrease. However, the reduced force will be directly transmitted to the lever 915 via the second positioning portion 9122. At the same time, the second pivot point 9152 will continue to receive the thrust from the first brake lever 912, causing the oil pressure in the first oil chamber 914 to continue to rise, as shown by line segment L2 in FIG7.

However, as shown in FIG. 7 , when the first brake lever 912 is operated by the known linkage brake system, the force is transferred from the line segment L1 to the line segment L2. Since the turning angle A1 between the line segment L1 and the line segment L2 is large, the user's operating feel will have an undesirable change from soft to hard.

Because of this, the inventor, with the spirit of active invention, was eager to think of a linkage brake system that could solve the above problems. After several years of research and experiments, the present invention was finally completed.

The main purpose of the present invention is to provide a linkage brake system, by adding an elastic member between the lever and the first brake lever, the elastic member is bolted to the lever or the first brake lever. When the first brake lever is operated, the buffering of the elastic member can be used to reduce the instantaneous change of the soft and hard operating feel. In this way, the present invention can solve the problem described in the prior art that when operating the first brake lever, the user's operating feel will have an undesirable change from soft to hard.

To achieve the above-mentioned purpose, the linkage brake system of the present invention includes a linkage brake unit and an independent brake unit. The linkage brake unit includes a first brake master cylinder, a first brake caliper, a brake wire and a first brake oil pipe. The first brake master cylinder includes a first brake lever, a lever, a first cylinder body, a first plunger, a first spring and a first oil chamber. The first cylinder body contains the first plunger, the first spring and the first oil chamber. The first spring connects the first cylinder body and the first plunger and applies a spring force to the first plunger for a long time to prevent the first plunger from being operated. When the first brake lever is operated, it is reset. The lever is pivoted to the first cylinder body with a first pivot point. The lever has a push portion that can directly or indirectly push the first plunger to transmit the force of the first brake lever to the first plunger via the lever. The first brake lever is pivoted to the lever with a second pivot point. The first brake lever is provided with a first positioning portion and a second positioning portion. Among them, the first brake oil pipe can transport the hydraulic oil of the first brake master cylinder to the first brake caliper to produce a braking effect, and the brake wire can transmit the force of the first positioning portion to the independent brake unit to achieve a linked braking effect.

The above-mentioned linkage brake system is characterized in that there is a gap between the second positioning part and the lever, and an elastic member is installed in the gap. Thus, by utilizing the buffering of the elastic member, when the first brake lever is operated to continuously apply force, the instantaneous change of the soft and hard operating feel can be eliminated, thereby optimizing the user's operating feel.

The elastic member can be fixed on the lever; or the elastic member can also be fixed on the first brake lever.

On the other hand, when the first brake lever is actuated by force, the gap may become smaller as the force increases, and the second positioning portion may indirectly apply force to the lever via the elastic member. The elastic member's buffering may eliminate instantaneous changes in the user's operating feel.

The above-mentioned independent brake unit may include a second brake master cylinder, a second brake caliper and a second brake oil pipe. The second brake master cylinder may include a second brake lever, a rocker arm, a drag plate, a second cylinder body, a second plunger, a second spring and a second oil chamber. The accommodation space of the second cylinder body may accommodate the second plunger, the second spring and the second oil chamber. The second spring may connect the second cylinder body and the second plunger and may be long. A spring force is applied to the second plunger at a certain time. The rocker arm can be pivoted to the second cylinder body, the drag plate can be pivoted to the rocker arm, and the second brake lever can be pivoted to the second cylinder body. When the second brake lever rotates, the rocker arm can rotate. When the drag plate is pulled by the brake wire, the rocker arm can rotate. When the rocker arm rotates, it can directly or indirectly push the plunger. Among them, the second brake oil pipe can transport the hydraulic oil of the second brake master cylinder to the second brake caliper to produce a braking effect.

The above summary and the following detailed description are exemplary in nature and are intended to further illustrate the scope of the patent application of the present invention. Other purposes and advantages of the present invention will be described in the subsequent description and illustrations.

Please refer to FIG8 and FIG9, which are respectively a cross-sectional view of a linkage brake system and a cross-sectional view of a first brake master cylinder of an embodiment of the present invention. The figure shows a linkage brake system 100a, including an independent brake unit a and a linkage brake unit b, wherein the independent brake unit a includes a second brake master cylinder 2, a second brake caliper 4 and a second brake oil pipe 7, and the second brake master cylinder 2 includes a second cylinder 21, a second brake lever 22, a swing arm 25 and a drag plate 26. The second cylinder 21 is assembled on one side of the handle 5, and the accommodation space thereof accommodates a second plunger 23, a second oil chamber 24 and a second spring 27. The second spring 27 connects the second cylinder 21 and the second plunger 23 and applies a spring force to the second plunger 23 for a long time to reset the second brake lever 22 when it is not operated. In addition, the second brake lever 22 and the rocker arm 25 are pivoted to the second cylinder 21, the drag plate 26 is pivoted to the rocker arm 25, and the drag plate 26 is connected to a brake wire 8 through a rebound spring 211, and the rebound spring 211 can provide a spring force to reset the drag plate 26 and the rocker arm 25. When the second brake lever 22 rotates, the rocker arm 25 can rotate. When the carriage 26 is pulled by the brake wire 8, the rocker arm 25 can also rotate. When the rocker arm 25 rotates, it can directly or indirectly push the second plunger 23, and then the hydraulic oil of the second brake master cylinder 2 is transported to the second brake caliper 4 through the second brake oil pipe 7 to produce a braking effect.

On the other hand, the linkage brake unit b includes a first brake master cylinder 1, a first brake caliper 3, a first brake oil pipe 6 and a brake wire 8. The first brake master cylinder 1 includes a first cylinder 11, a first brake lever 12, a lever 15 and an elastic member 17. The first cylinder 11 is assembled on the handle 5, and its accommodating space accommodates a first plunger 13, a first oil chamber 14 and a first spring 16. The first spring 16 connects the first cylinder 11 and the first plunger 13 and applies a spring force to the first plunger 13 for a long time to reset the first brake lever 12 when it is not operated. The brake wire 8 is fixed on a brake wire fixing seat 112 of the first cylinder 11. In addition, the first brake lever 12 is provided with a first positioning portion 121 and a second positioning portion 122, and the first brake lever 12 is pivoted to the lever 15 at a second pivot point 152, the lever 15 has a push portion 151 that can directly or indirectly push the first plunger 13, and the lever 15 is pivoted to the first cylinder 11 at a first pivot point 111. Among them, the first brake oil pipe 6 can transport the hydraulic oil of the first brake master cylinder 1 to the first brake caliper 3 to produce a braking effect, and the brake wire 8 can transmit the force of the first positioning portion 121 to the independent brake unit a through the drag plate 26 and the swing arm 25 to achieve a linked braking effect. In this embodiment, there is a gap between the second positioning portion 122 and the lever 15 , and an elastic member 17 is disposed in the gap. The elastic member 17 is fixed to the lever 15 via a bolt 18 .

Please refer to Figures 10 to 12, which are respectively a cross-sectional view of the first actuation state of the first brake master cylinder of an embodiment of the present invention, a cross-sectional view of the second actuation state, and a force curve diagram of the brake wire force and the oil pressure of the first oil chamber of the linkage brake system. When the first brake lever 12 is actuated by force, the above-mentioned gap will become smaller as the force increases, and the second positioning portion 122 will indirectly apply force to the lever 15 through the elastic member 17. Therefore, before the elastic member 17 is not contacted by the second positioning portion 122 of the first brake lever 12, the force of the brake wire 8 and the oil pressure of the first oil chamber 14 are the line segment L1 in Figure 12. As shown in FIG10 , when the first brake lever 12 continues to increase its force, the second positioning portion 122 contacts the elastic member 17 (the force condition at the moment of contact is shown as point P2 in FIG12 ), and the elastic member 17 is squeezed by the force. At this time, the force of the brake wire 8 and the oil pressure of the first oil chamber 14 are line segment L2 in FIG12 , and the angle between line segment L1 and line segment L2 is the turning angle A2. As shown in FIG11 , when the first brake lever 12 continues to increase the force applied, the elastic member 17 reaches the maximum deformation (the force condition of the elastic member 17 at the moment of the maximum deformation is shown as point P3 in FIG12 ). Thereafter, the force applied by the brake wire 8 and the oil pressure of the first oil chamber 14 are line segment L3 in FIG12 , and the angle between line segment L2 and line segment L3 is the turning angle A3. By utilizing the buffering function of the elastic member 17, the turning angle A1 in FIG. 7 can be divided into a turning angle A2 and a turning angle A3. That is to say, the turning angle A1 is equal to the sum of the turning angle A2 and the turning angle A3. In this way, the relationship between the force applied by the brake wire 8 and the oil pressure of the first oil chamber 14 is modified into three line segments with different slopes, thereby reducing the instantaneous change of the soft and hard operating feel, thereby improving the user's operating feel.

Please refer to FIG. 13, which is a cross-sectional view of the first brake master cylinder of another embodiment of the present invention. The figure shows a linkage brake system 100b, which is similar to the linkage brake system 100a of FIG. 8, except that the elastic member 17 is fixed to the first brake lever 12 through a bolt 18. In addition, the function of the linkage brake system 100b is similar to that of the linkage brake system 100a, so it will not be repeated here.

The above embodiments are merely examples for the convenience of explanation. The scope of rights claimed by the present invention should be based on the scope of the patent application, and is not limited to the above embodiments.

9,100a,100b: Linked brake system a,9a: Independent brake unit b,9b: Linked brake unit 1,91: First brake master cylinder 11,911: First cylinder 111,9111: First pivot point 112,9112: Brake wire fixing seat 12,912: First brake lever 121,9121: First positioning part 122,9122: Second positioning part 13,913: First plunger 14,914: First oil chamber 15,915: Lever 151,9151: Push part 152,9152: Second pivot point 16,916: First spring 17: Elastic member 18: Bolt 2,92: Second brake master cylinder 21,921: Second cylinder 211,9211: Rebound spring 22,922: Second brake lever 23,923: Second plunger 24,924: Second oil chamber 25,925: Rocker arm 26,926: Slide plate 27,927: Second spring 3,93: First brake caliper 4,94: Second brake caliper 5,95: Handlebar 6,96: First brake oil pipe 7,97: Second brake oil pipe 8,98: Brake wire A1,A2,A3: Turning angle L1,L2,L3: Line segment P1,P2,P3: Point

FIG. 1 is a diagram of a known linked brake system. FIG. 2 is a view in the direction of A of FIG. 1. FIG. 3 is an A-A cross-sectional view of FIG. 2. FIG. 4 is a cross-sectional view of a first brake master cylinder of a known linked brake system. FIG. 5 is a cross-sectional view of a first actuation state of a first brake master cylinder of a known linked brake system. FIG. 6 is a cross-sectional view of a second actuation state of a first brake master cylinder of a known linked brake system. FIG. 7 is a force curve diagram of a brake wire of a known linked brake system and an oil pressure of a first oil chamber. FIG. 8 is a cross-sectional view of a linked brake system of an embodiment of the present invention. FIG. 9 is a cross-sectional view of a first brake master cylinder of an embodiment of the present invention. FIG. 10 is a cross-sectional view of a first actuation state of a first brake master cylinder of an embodiment of the present invention. FIG. 11 is a cross-sectional view of the second operating state of the first brake master cylinder of an embodiment of the present invention. FIG. 12 is a force curve diagram of the brake wire force and the oil pressure of the first oil chamber of the linkage brake system of an embodiment of the present invention. FIG. 13 is a cross-sectional view of the first brake master cylinder of another embodiment of the present invention.

1: First brake master cylinder

11: First cylinder

111: First hub

112: Brake wire fixing seat

12: First brake lever

121: First positioning part

122: Second positioning part

13: First plunger

14: First oil chamber

15: Leverage

151: Push Department

152: Second pivot point

16: First spring

17: Elastic parts

18: Bolts

5:Handle

8: Brake wire

Claims (5)

A linkage brake system includes a linkage brake unit and an independent brake unit. The linkage brake unit includes a first brake master cylinder, a first brake caliper, a brake wire and a first brake oil pipe. The first brake master cylinder includes a first brake lever, a lever, a first cylinder body, a first plunger, a first spring and a first oil chamber. The first cylinder body has a space for accommodating the first plunger, the first spring and the first oil chamber. The first spring connects the first cylinder body and the first plunger and applies pressure to the first cylinder body for a long time. The plunger applies a spring force, the lever is pivoted to the first cylinder body with a first pivot point, the lever has a push portion that can directly or indirectly push the first plunger, the first brake lever is pivoted to the lever with a second pivot point, the first brake lever is provided with a first positioning portion and a second positioning portion; wherein, the first brake oil pipe can deliver the hydraulic oil of the first brake master cylinder to the first brake caliper to produce a braking effect, and the brake wire can transmit the force of the first positioning portion to the independent brake unit to achieve a linkage braking effect; Its characteristic is that: there is a gap between the second positioning portion and the lever, and an elastic member is installed in the gap. A linked brake system as described in claim 1, wherein the elastic member is fixed to the lever. A linked brake system as described in claim 1, wherein the elastic member is fixed to the first brake lever. As described in claim 1, the linked brake system, wherein when the first brake lever is actuated by force, the gap will become smaller as the force increases, and the second positioning portion will indirectly apply force to the lever through the elastic member. The linked brake system as described in claim 1, wherein the independent brake unit includes a second brake master cylinder, a second brake caliper and a second brake oil pipe, the second brake master cylinder includes a second brake lever, a rocker arm, a drag plate, a second cylinder body, a second plunger, a second spring and a second oil chamber, the second cylinder body has a housing space that accommodates the second plunger, the second spring and the second oil chamber, the second spring connects the second cylinder body and the second plunger and A spring force is applied to the second plunger for a long time, the rocker arm is pivoted to the second cylinder body, the drag plate is pivoted to the rocker arm, the second brake lever is pivoted to the second cylinder body, the rocker arm can be rotated when the second brake lever rotates, the drag plate can be rotated when pulled by the brake wire, and the rocker arm can directly or indirectly push the second plunger when it rotates, wherein the second brake oil pipe can transport the hydraulic oil of the second brake master cylinder to the second brake caliper to produce a braking effect.

Images