Linkage brake system of bicycle

Abstract

The utility model relates to a bicycle linkage brake system which comprises two calipers, a flow divider and two brake master pumps, the two calipers are the first calipers and the second calipers respectively, the first calipers are provided with a first piston set and a second piston set which are arranged at intervals, the flow divider is communicated with the interiors of the two calipers respectively, and the two brake master pumps are communicated with the flow divider. The two brake master pumps include the first brake master pump and the second brake master pump, the first brake master pump communicates with the interior of the first caliper and can be operated to drive fluid to be input into the first piston set, and the second brake master pump is connected with the flow divider and communicates with the interiors of the two calipers through the flow divider. The second brake master cylinder can be operated to drive the fluid to be input into the second piston set and the second caliper through the flow divider so as to control the two calipers to act at the same time, and therefore the risk that the bicycle turns over and slips can be greatly reduced, and safety is improved.

Description

Technical Field

[0001] The utility model relates to a bicycle, in particular to a bicycle linkage braking system. Background Art

[0002] The braking system of the existing bicycle includes two braking handles, which respectively correspond to the front wheel and the rear wheel and are installed on both sides of the bicycle handlebar. Usually, the braking handle for the rear wheel is arranged on the left side of the handlebar, and the braking handle for the front wheel is arranged on the right side of the handlebar. When braking, it is necessary to operate the two braking handles with appropriate force to brake stably.

[0003] However, since each braking handle only corresponds to a single wheel for braking, and it is inevitable that the force ratio and timing of the bicycle rider operating the two braking handles are inappropriate, the bicycle may have accidents such as tipping over and skidding, and the riding safety is doubtful. Summary of the Utility Model

[0004] In order to solve the problems that in the braking system of the existing bicycle, the bicycle may have accidents such as tipping over and skidding, and the riding safety is doubtful, the purpose of the utility model is to provide a bicycle linkage braking system that can brake the front and rear wheels simultaneously with an appropriate force ratio, thereby reducing the probability of accidents and improving safety.

[0005] The bicycle linkage braking system proposed by the utility model to solve the technical problems includes:

[0006] Two calipers, which can be respectively arranged on the front wheel and the rear wheel of a bicycle, and are respectively a first caliper and a second caliper. The first caliper is provided with at least two piston groups, and the at least two piston groups are respectively at least one first piston group and at least one second piston group that are spaced apart;

[0007] A flow divider, which is respectively communicated with the interiors of the two calipers;

[0008] A first master cylinder, which is communicated with the interior of the first caliper and can be operated to drive fluid to input into the first piston group to control the first piston group to actuate; and

[0009] A second master cylinder, which is connected to the flow divider and is communicated with the interiors of the two calipers through the flow divider. The second master cylinder can be operated to drive fluid to input into the second piston group and the second caliper to simultaneously control the second piston group of the first caliper and the second caliper to actuate.

[0010] The enhanced effects achievable by the technical means of the present utility model are as follows: In the bicycle linked braking system of the present utility model, when operating the second master brake cylinder, the fluid driven by the second master brake cylinder will be appropriately split by the splitter and respectively input into the two calipers, which can ensure that the front and rear wheels of the bicycle are braked simultaneously with an appropriate force ratio, significantly reducing the risks of the bicycle tipping over and skidding, thereby enhancing the safety of cycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The following drawings are only intended to illustrate and explain the present utility model schematically and do not limit the scope of the present utility model. Among them:

[0012] Figure 1 is a schematic external view of a preferred embodiment of the present utility model.

[0013] Figure 2 is a schematic external view of a preferred embodiment of the present utility model applied to a bicycle.

[0014] Figure 3 is a three-dimensional external view of the first caliper of a preferred embodiment of the present utility model.

[0015] Figure 4 is an exploded view of the components of the first caliper of a preferred embodiment of the present utility model.

[0016] Figure 5 is a side view of the first caliper of a preferred embodiment of the present utility model.

[0017] Figure 6 is along Figure 5 the sectional schematic view of the A-A cutting line.

[0018] Figure 7 is along Figure 5 the sectional schematic view of the B-B cutting line.

[0019] Figure 8 is an operation schematic view of a preferred embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] To understand in detail the technical features and practical effects of the present utility model and to implement it in accordance with the creative content, the following further details a preferred embodiment as shown in the drawings:

[0021] As shown in Figure 1 and Figure 2As shown, a preferred embodiment of the bicycle linked braking system of the present utility model includes two calipers, a flow divider 20, and two master cylinders. The bicycle linked braking system is applied to a bicycle 90. The two calipers can be respectively disposed on the front wheel 91 and the rear wheel 92 of the bicycle 90. The flow divider 20 is used to control the flow splitting of the fluid between the calipers and the master cylinders. The two master cylinders are respectively a first master cylinder 30 and a second master cylinder 40, and can be operated by a user to drive the two calipers to actuate.

[0022] As Figure 1 and Figure 2 shown, the two calipers are respectively a first caliper 10A and a second caliper 10B, which are respectively used to brake the front wheel 91 and the rear wheel 92 of the bicycle 90. Among them, the two calipers use the pressure of the fluid to push the brake pads to brake. The flow divider 20 is respectively communicated with the inside of the first caliper 10A and the inside of the second caliper 10B to supply the fluid to flow into the first caliper 10A and the second caliper 10B.

[0023] In a preferred embodiment of the present utility model, the two calipers can be driven by oil pressure, hydraulic pressure or air pressure. Each caliper is provided with a corresponding channel or space for the liquid or gas to flow. Specifically, as Figures 3 to 6 shown, each caliper is provided with at least one joint 111 for connecting the pipeline extending from the master cylinder, and is provided with at least one guiding channel 112. The guiding channel 112 extends inward from the joint 111 for the liquid or gas to flow in. In addition, each caliper is provided with at least one mounting hole 113 to fix the caliper on the bicycle 90.

[0024] As Figure 1 and Figure 2 shown, the first master cylinder 30 is directly connected to the first caliper 10A by a pipeline, so as not to communicate with the inside of the first caliper 10A through the flow divider 20 to drive the first caliper 10A to actuate; the second master cylinder 40 is connected to the flow divider 20 by a pipeline, so as to communicate with the inside of the first caliper 10A and the inside of the second caliper 10B through the flow divider 20, thereby driving the first caliper 10A and the second caliper 10B to actuate simultaneously.

[0025] Specifically, each master cylinder may specifically include an operating handle and a piston mechanism connected to the operating handle. By operating the operating handle, the piston mechanism can be controlled to actuate and drive the fluid, so that the fluid is input into the corresponding caliper through the pipeline, thereby driving the corresponding caliper to perform a braking action. Regarding other structures or operation details of the master cylinder, they may vary depending on the type and model of the master cylinder, and do not affect the technical key points of the present utility model, so no special limitation is made.

[0026] Among them, asFigure 3 and Figure 4 As shown in Figure 4 , the first caliper 10A is provided with two piston groups, namely a first piston group 12A and a second piston group 12B which are spaced apart. When the first caliper 10A brakes, the first master cylinder 30 drives fluid to be input into the first piston group 12A, causing the first piston group 12A to actuate for braking. The second master cylinder 40 drives fluid to be input into the second piston group 12B, causing the second piston group 12B to actuate for braking. Thus, when the first master cylinder 30 and the second master cylinder 40 brake through the first caliper 10A, braking is performed through different piston groups.

[0027] As Figure 2 and Figure 8 As shown in Figure 2 and Figure 8 , the operation mode of the bicycle linked braking system is as follows: Taking the preferred embodiment of the present invention as an example, the first caliper 10A is provided on the front wheel 91 of the bicycle 90, and the second caliper 10B is provided on the rear wheel 92 of the bicycle 90. If the first master cylinder 30 is operated, fluid is input into the first piston group 12A to drive the first piston group 12A to brake the front wheel 91; if the second master cylinder 40 is operated, the fluid flows to the diverter 20, is diverted by the diverter 20 and respectively input into the second piston group 12B and the second caliper 10B, thereby simultaneously driving the second piston group 12B and the second caliper 10B to brake the front wheel 91 and the rear wheel 92 respectively.

[0028] Among them, the diverter 20 can specifically select a fixed-flow diverter valve to make the flow rates of the fluids respectively input into the two calipers present a fixed and appropriate ratio, which can avoid too large a difference in the braking forces of the front wheel 91 and the rear wheel 92 of the bicycle 90; or, the diverter 20 can further select a diverter valve capable of adjusting the flow rate, and can adjust the flow rates of the fluids input into the two calipers according to the location of the bicycle during driving or other factors. Thus, the front wheel 91 and the rear wheel 92 can be braked with a more appropriate force ratio.

[0029] Compared with the braking systems of existing bicycles where each brake handle only corresponds to braking of a single wheel, in the bicycle linked braking system of the present invention, when braking is performed by the second master cylinder 40, since the second master cylinder 40 is simultaneously connected to the interiors of the two calipers through the diverter 20, the fluid driven by the second master cylinder 40 will be appropriately diverted and respectively input into the two calipers, which can ensure that the front wheel and the rear wheel of the bicycle are braked with an appropriate force ratio simultaneously, and can greatly reduce the risks of the bicycle tipping over and skidding, thereby improving the safety of riding a bicycle.

[0030] Furthermore, as Figure 3 and Figure 4As shown, each piston group of the first caliper 10A includes two chambers 13 and two pistons 15. The two chambers 13 are oppositely arranged. The two chambers 13 of the first piston group 12A are communicated with the first master brake cylinder 30, and the two chambers 13 of the second piston group 12B are communicated with the second master brake cylinder 40. Moreover, the two chambers 13 of the first piston group 12A are spaced apart from the two chambers 13 of the second piston group 12B; each piston 15 is disposed in one of the corresponding chambers 13. The first caliper 10A includes a plurality of brake pads 14, and each brake pad 14 is disposed outside the opening of one of the corresponding chambers 13. Thus, the two pistons 15 of each piston group can push the corresponding two brake pads 14 to approach each other.

[0031] Specifically, as Figure 3 and Figure 5 shown, each caliper includes a caliper housing 11, and the aforementioned joint 111 is connected to the caliper housing 11. As Figure 6 and Figure 7 shown, the aforementioned guiding channel 112 extends from the joint 111 into the caliper housing 11 and branches, so as to be respectively connected to the two chambers 13. Thus, the fluid driven by the master brake cylinder can enter the two chambers 13 through the pipeline and the guiding channel 112, and drive the two pistons 15, so that the two pistons 15 push the corresponding two brake pads 14 to approach each other to clamp a brake disc.

[0032] In other embodiments, the first caliper 10A can also adopt different configurations. For example, it can also only include two brake pads, and the two brake pads are oppositely arranged between the two pistons 15 of each piston group. When operating different master brake cylinders, the two brake pads can be pushed to approach each other, and the brake disc can also be clamped, so as to achieve the braking effect.

[0033] However, for the caliper configurations of the aforementioned other embodiments, the pistons 15 of the first piston group 12A and the second piston group 12B contact different positions of the brake pads respectively. When braking with different master brake cylinders, the positions where the pistons push the brake pads are different, which may lead to inconsistent braking effects, and even may cause the brake pads to warp, resulting in the inability to firmly clamp the brake disc during subsequent braking and being prone to failure; in contrast, in the preferred embodiment of the present invention, the first caliper 10A is provided with the plurality of brake pads 14, and the pistons 15 of the first piston group 12A and the second piston group 12B push different brake pads 14 to brake, so that a stable braking effect can be provided, the brake pads 14 can be prevented from warping, and thus the brake disc can be firmly clamped.

[0034] Alternatively, in other embodiments, if the first caliper 10A is to adopt the form of two brake pads, two of the first piston groups 12A and one of the second piston groups 12B may be provided. The two pistons 15 of the second piston group 12B respectively abut against the centers of the two brake pads, and the pistons 15 of the two first piston groups 12A are symmetrically arranged with the piston 15 of the second piston group 12B as the reference. In this way, when operating different master cylinders and braking with the first piston group 12A and the second piston group 12B respectively, the brake pads can be stably pushed and warping of the brake pads can be avoided, and the effect of firmly clamping the brake disc can also be achieved.

[0035] In addition, the numbers of the first piston group 12A and the second piston group 12B can be determined according to requirements and are not limited to the above embodiments. As long as the two pistons 15 of one of the second piston groups 12B respectively abut against the centers of the two brake pads, and the remaining second piston groups 12B and the first piston groups 12A are symmetrically arranged with the central second piston group 12B as the reference, the effect of stably pushing the brake pads and avoiding warping of the brake pads can be achieved.

[0036] In another embodiment, if two brake pads are adopted, one of the brake pads can also be fixedly arranged, and each piston group is provided with a single chamber and a single piston. The other brake pad is arranged corresponding to the single piston of each piston group. During braking, the aforementioned brake pad is pushed to approach the fixed other brake pad, and the brake disc can also be clamped to achieve the braking effect. The configuration of the first caliper 10A is not limited to the above.

[0037] In a preferred embodiment of the present invention, corresponding to the first caliper 10A, the second caliper 10B also includes two piston groups. In the second caliper 10B, the chambers 13 of the two piston groups are communicated with each other and are communicated with the second master cylinder 40 through the flow divider 20. Therefore, the second caliper 10B only needs to be provided with a single joint 111 and the guiding channel 112. When operating the second master cylinder 40, the fluid can be driven to pass through the flow divider 20, the guiding channel 112 and enter all the chambers 13 of the second caliper 10B, so that the two piston groups of the second caliper 10B act synchronously to provide a stable braking effect.

[0038] In a preferred embodiment of the present invention, the caliper seats 11 of the first caliper 10A and the second caliper 10B are respectively composed of two seat bodies 110 that are oppositely combined and fixed by bolts. The two chambers 13 of each piston group are respectively recessed on the two seat bodies 110, and the two seat bodies 110 have a substantially symmetrical structure; when the components of the piston group are damaged, the two seat bodies 110 can be disassembled, and the brake pads 14 and the pistons 15 can be taken out to facilitate disassembly, replacement and maintenance operations.

[0039] Preferably, asFigure 4 and Figure 7 As shown in Figure 7 , two limiting convex parts 16 are protruded around the opening of each of the piston groups in each of the chambers 13, so that the brake pads 14 corresponding to the chambers 13 are limited between the two limiting convex parts 16. In a preferred embodiment of the present invention, the limiting convex parts 16 are formed on the seat body 110 of the caliper seat 11. Limited by the limiting convex parts 16, during braking, each of the brake pads 14 will move along the direction towards the opening of the corresponding chamber 13 without deviation, which can further ensure the stability of driving the brake pads 14 for braking.

[0040] In addition, as Figure 7 shown, in a preferred embodiment of the present invention, each piston 15 of each piston group is provided with at least one positioning convex part 151. Correspondingly, at least one positioning groove 131 is recessed in each of the chambers 13. The positioning convex part 151 can be inserted into or disengaged from the positioning groove 131 of the corresponding chamber 13 as the piston 15 moves, thereby providing a positioning effect and facilitating the installation of the piston 15 into the corresponding chamber 13.

[0041] The above description is only a preferred embodiment of the present invention and does not impose any form of limitation on the present invention. Although the present invention has been disclosed above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the equivalent embodiments of the equivalent changes by using the above-disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not deviate from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A bicycle linkage braking system, characterized in that, It includes: Two calipers, which can be respectively arranged on the front wheel and the rear wheel of a bicycle, and are respectively a first caliper and a second caliper. The first caliper is provided with at least two piston groups, and the at least two piston groups are respectively at least one first piston group and at least one second piston group that are spaced apart; A flow divider, which is respectively communicated with the interiors of the two calipers; A first master brake cylinder, which is communicated with the interior of the first caliper and can be operated to drive fluid to input into the first piston group to control the actuation of the first piston group; And A second master brake cylinder, which is connected to the flow divider and is communicated with the interiors of the two calipers through the flow divider. The second master brake cylinder can be operated to drive fluid to input into the second piston group and the second caliper to simultaneously control the actuation of the second piston group of the first caliper and the second caliper.

2. The bicycle linkage braking system according to claim 1, wherein The first caliper is provided with at least four brake pads. Each piston group includes two chambers and two pistons. The two chambers are oppositely arranged, and the two pistons are respectively arranged in the two chambers. Each brake pad is arranged outside the opening of a corresponding one of the chambers, so that the two pistons of each piston group can push the corresponding two brake pads to approach each other.

3. The bicycle linkage braking system according to claim 2, characterized in that, Each piston group is convexly provided with two limiting convex portions around the opening of each chamber, so that the brake pad corresponding to the chamber is limited between the two limiting convex portions.

4. The bicycle linked braking system according to claim 1, wherein The first caliper is provided with two first piston groups, one second piston group, and two oppositely arranged brake pads. Each piston group includes two chambers and two pistons. The two pistons are respectively arranged in the two chambers. The two brake pads are arranged between the two pistons of each piston group. The two pistons of the second piston group respectively abut against the centers of the two brake pads, and the pistons of the two first piston groups are symmetrically arranged with the pistons of the second piston group as the reference.

5. The bicycle linked braking system according to any one of claims 2 to 4, characterized in that, The first caliper includes a caliper seat, which is composed of two seat bodies that are oppositely combined and fixed. The two chambers of each piston group are respectively recessed and formed on the two seat bodies.

6. The bicycle linkage braking system according to any one of claims 2 to 4, characterized in that Each piston is provided with at least one positioning convex portion, and at least one positioning groove is recessed in each chamber. The positioning convex portion of each piston can be embedded in or disengaged from the positioning groove of the corresponding chamber as the piston moves.

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