TWI590979B - Brake for a bicycle - Google Patents

Description

Bicycle brake

The present invention is related to brakes, and more particularly to a bicycle brake.

The conventional bicycle brake device first pulls the first arm assembly toward the brake side through the brake line, and then drives the second arm assembly to move to the other brake side. Such a structural design will cause a time difference between the left and right brakes. , which in turn leads to brake deviation and excessive force on the single arm assembly. Therefore, the latter is committed to the development of synchronous brakes to improve the above problems, such as the patent TMW505444.

In addition, in the conventional structure, a relatively rigid pipe member is abutted between a brake arm of the bicycle brake and the brake grip or the frame, and the thrust force of the pipe member is used to actuate the brake arm. Clip the opposite brake side. However, in this type of structure, the two brake arms are pivotable, and the brake wire first passes through one of the brake arms and is connected to one end of the other brake arm, so when the brake is applied, the pipe is also There will be vibration, shaking, and positional changes with the two brake arms, resulting in poor braking time and affecting the braking effect and accuracy when the faucet rotates. There is a drawback that needs to be improved.

Therefore, it is necessary to provide a novel and progressive bicycle brake to solve the above problems.

The main object of the present invention is to provide a bicycle brake device which can be braked quickly, without delay and with precision, and can reduce brake reaction time and no brake time difference.

In order to achieve the above object, the present invention provides a bicycle brake comprising: a base for fixing to a bicycle frame without relative movement; a wire guiding mechanism for connecting with the bicycle and fixing with the base The relative position includes a second defining structure and a conduit between the two defining structures; an arm set including a first arm assembly and a second arm assembly pivotally disposed on the base, the first arm assembly having a first end portion and a second end portion, the first end portion being connected to a brake wire passing through the conduit, the second end portion being for clamping toward a braking edge of a rim, the second arm assembly having a third end portion and a fourth end portion for swaying toward the other braking edge of the rim.

The following is a description of the possible embodiments of the present invention, and is not intended to limit the scope of the invention as claimed.

Referring to Figures 1 through 7, there is shown a preferred embodiment of the present invention. The bicycle brake of the present invention includes a base 1, a wire guide 10 and an arm set.

The base 1 is fixed to a bicycle frame 100 without relative movement. The wire guiding mechanism 10 is connected to the bicycle and maintains a fixed relative position with the base 1. The wire guiding mechanism 10 includes two defining structures 101 and a conduit 102 limited between the two defining structures 101. The arm assembly includes a first arm assembly 2 and a second arm assembly 3, and the arm assembly is pivotally mounted to the base 1. The first arm assembly 2 has a first end portion 21 and a second end portion 22. The first end portion 21 is connected to a brake wire 82 passing through the conduit 102. The second end portion 22 is provided for a rim. 9 One of the brake sides 91 is placed. The second arm assembly 3 has a third end portion 31 and a fourth end portion 32 for being clamped toward the other brake edge 91 of the rim 9 . Since the base 11 is fixed to the bicycle frame 100 without relative movement, for example, when the brake wire 82 is pulled by a brake grip to actuate the first arm assembly 2, the wire guide mechanism 10 and the base The relative position between 1 remains fixed without change, and the brakes act quickly, without delay and accuracy, reducing brake reaction time.

The second end portion 22 and the fourth end portion 32 are respectively provided with a braking member 81 (such as a sheet assembly), and each of the braking members 81 is in frictional contact with each of the braking edges 91 to stop the rim. 9 the purpose of rotation. It can be understood that the user can replace the brake member 81 with different braking effects according to different requirements to provide a more appropriate braking effect.

First, the bicycle brake device in this embodiment is described in detail. The first arm assembly 2 is pivotally mounted on the base 1. The second arm assembly 3 is pivoted relative to the first arm assembly 2 to the base. The first arm assembly 2 further includes a first abutting portion 23, and the second arm assembly 3 further includes a second abutting portion 33 disposed on the third end portion 31. The second abutting portion 33 is disposed above the first abutting portion 23 in a pivotal direction. The base 1 is provided with an arm portion 12 adjacent to the first end portion 21, and the free end of the arm portion 12 is provided with the second portion One of the defining structures 101, the other of the two defining structures 101 (eg, a brake grip assembly) is secured to the frame 100. However, in the embodiment shown in FIGS. 8 and 9, the two defining structures 101, 101a (eg, the retaining projections, the retaining recesses or the blocking members) may be disposed on the frame 100, and the two ends of the conduit 102 abut. The second defining structure 101, 101a is limited. In this structure, the base 1a is not provided with an arm adjacent to the first end.

The first and second arm assemblies 2, 3 are pivoted to the base 1 in a first direction 5, and the first end portion 21 is interposed between the base 1 and the fourth end 32. The first abutting portion 23 and the second abutting portion 33 are arranged in a staggered manner. More specifically, the base 1 is substantially "c" shaped along the first direction 5, and the second and fourth end portions 22, 32 are respectively disposed on two sides of the base 1, and In the first direction 5, the first abutting portion 23 and the second abutting portion 33 have substantially the same size.

Next, for further description of the brake actuation (refer to FIG. 4 and FIG. 5), since the base 1 is fixed to the bicycle frame 100 without relative movement, the wire guide mechanism 10 and the base 1 are The relative position remains fixed and does not change. The brake wire 82 is directly connected to the first end portion 21 after passing through the defining structure 101. Therefore, when the brake is actuated, the brake wire 82 can be fast, direct and accurate. The ground transmits the force and has the effect of braking more quickly. When the first end portion 21 is pulled up by the force, the second end portion 22 is swung toward the braking edge 91, and at the same time, the first abutting portion 23 is pushed against the second abutting portion 33, thereby further The fourth end portion 32 is forced to be swung toward the other brake side 91 to achieve the purpose of synchronous braking. Wherein, the first arm assembly 2 and the second arm assembly 3 are preferably integrally formed separately, and can have a relatively complete and firm structure to withstand unintended external impact, and is also easier to assemble in the production process.

Preferably, the first abutting portion 23 is provided with a rolling member 24 that is pressed against the second abutting portion 33, and the first abutting portion 23 is pushed into the second abutting portion 33. It can effectively reduce the friction and synchronize the movement more smoothly. More specifically, the second abutting portion 33 includes a guiding portion 331 and a cover portion 332. The roller member 24 is pressed against the guiding portion 331. The cover portion 332 is disposed on the guiding portion 331 and covers the cover portion 331. At least a portion of the roller member 24 is provided to ensure that the roller member 24 is not obstructed or even jammed by foreign matter during the rolling process.

In the embodiment, the cover portion 332 extends perpendicularly to the guiding portion 331. The guiding portion 331 has an arc shape, and the roller member 24 is designed to have a smoother movement. More specifically, the first abutting portion 23 includes a base 231 and a roller 232. The base 231 extends along the first direction 5 to the first end portion 21. The roller base 232 is disposed on the base 231. The roller member 24 is rotatably disposed on the roller base 232. Wherein, the base 231 is not in contact with the guiding section 331 to ensure that an unexpected interference occurs.

It is worth mentioning that the base 231 is also arcuate, and the radius of curvature of the base 231 is larger than the radius of curvature of the guiding section 331. Therefore, when the braking process is performed, the first and second arm assemblies 2, 3 When the yaw is at a certain angle, at least one of the roller member 24 and the roller seat 232 is engaged with the guiding portion 331 to prevent the first abutting portion 23 from being disengaged from the second abutting portion 33. Cannot be restored to the state before the brakes.

Preferably, the second arm assembly 3 is further provided with a stopping portion 34, and the stopping portion 34 can selectively abut the first end portion 21. In this embodiment, the stopping portion 34 extends between the fourth end portion 32 and between the fourth end portion 32 and the base 1 , and the first end portion 21 extends across the stop. When the second end portion 22 and the fourth end portion 32 are away from each other by an angle, the first end portion 21 and the stopping portion 34 abut each other to limit the second end portion 22 And the fourth end portion 32 does not swing further away from the rim 9.

It is to be noted that the bicycle brake preferably further includes an elastic member 6. The two ends of the elastic member 6 abut against the base 1 and the second arm assembly 3, respectively, and the second end portion 22 is And the fourth end portion 32 has a tendency to move away from the braking edge 91. After the braking action is finished, the elastic member 6 can automatically move the second and fourth end portions 22, 32 away from the rim 9. It is avoided that each of the brake members 81 continues to contact the respective brake sides 91.

More specifically, in the present embodiment, the elastic member 6 is a torsion spring, and the first arm assembly 2 is pivotally disposed on the base 1 through a first pivot 71, and the second arm assembly 3 is The base 1 is pivotally disposed through a second pivot 72, and the second pivot 72 extends through the elastic member 6. Therefore, when the brake is braked, the second arm assembly 3 is oscillated by the first arm assembly 2 to twist and compress the elastic member 6. Through the design, the connecting rod has the effect of saving labor, so that the first arm assembly 2 is pivoted on the brake. In the process, it is less susceptible to the rebound resistance of the elastic member 6.

More specifically, the pedestal 1 is provided with a pad portion 11 , the second arm assembly 3 abuts against the pad portion 11 , the elastic member 6 is wound around the pad portion 11 , and the second pivot 72 passes through the pedestal portion The two-arm assembly 3 and the pad portion 11 are pivoted relative to the pad portion 11 with the second pivot 72 as an axis. During the assembly process, the elastic member 6 and the second arm assembly 3 are easily and quickly positioned in the designed position through the pad portion 11 to ensure that the fourth end portion 32 can symmetry the second end portion 22, and There is a better brake effect.

In summary, the base of the bicycle brake device of the present invention is fixed to the frame of the bicycle without relative movement, and the relative position between the wire guiding mechanism and the base remains fixed without change, so the brake acts quickly and does not. Delayed and precise, reducing brake response time. Moreover, the first and second arm assemblies can be synchronously oriented toward the rim through the connecting rod design, and there is no brake time difference, so that the brake effect can be better; and the design of the connecting rod has the effect of labor saving, During the braking process, it is less susceptible to the spring force of the elastic member. In addition, the first and second swing arm assemblies are set to have a fixed yaw amplitude, which can prevent the swing amplitude from being excessively disengaged.

1,1a‧‧‧Base
10‧‧‧Wire guide
11‧‧‧Mats
12‧‧‧ Arms
2‧‧‧First arm assembly
21‧‧‧ first end
22‧‧‧ second end
23‧‧‧First Abutment
231‧‧‧ base
232‧‧‧Rolling seat
24‧‧‧Rolling parts
3‧‧‧Second arm assembly
31‧‧‧ third end
32‧‧‧ fourth end
33‧‧‧Second Abutment
331‧‧‧ guiding section
332‧‧‧ 盖部
34‧‧‧stop
5‧‧‧First direction
6‧‧‧Flexible parts
71‧‧‧First pivot
72‧‧‧Second pivot
81‧‧‧Brakes
82‧‧‧ brake line
9‧‧‧ rims
91‧‧‧ brake side
100‧‧‧ frame
101,101a‧‧‧Defined structure
102‧‧‧ catheter

1 is a perspective view of a preferred embodiment of the present invention. 2 is an exploded view of a preferred embodiment of the present invention. 3 is a cross-sectional view of a second abutment portion in accordance with a preferred embodiment of the present invention. 4 and 5 are schematic views of the operation of a preferred embodiment of the present invention. 6 and 7 are schematic diagrams showing the application of a preferred embodiment of the present invention. 8 and 9 are schematic diagrams showing the application of another preferred embodiment of the present invention.

1‧‧‧Base

2‧‧‧First arm assembly

3‧‧‧Second arm assembly

81‧‧‧Brakes

82‧‧‧ brake line

102‧‧‧ catheter

Claims (10)

A bicycle brake includes: a base for fixedly attaching to a bicycle frame without relative movement; a wire guiding mechanism for connecting with the bicycle and maintaining a fixed relative position with the base, including two defined structures and a first tube assembly having a first end portion and a first arm assembly and a second arm assembly pivotally disposed on the base a second end portion, the first end portion is connected by a brake wire passing through the conduit, the second end portion is for clamping toward a brake side of a rim, and the second arm assembly has a third end portion and a first end portion a four end portion for swaying toward the other brake side of the rim. The bicycle brake of claim 1, wherein the first end is interposed between the base and the fourth end, the first arm assembly further comprising a first abutting portion, the second arm The assembly further includes a second abutting portion disposed at the third end portion, the second abutting portion is disposed above the first abutting portion in a pivotal direction, the first abutting portion and the first abutting portion The second abutting portions are overlapped and arranged alternately. The bicycle brake according to claim 2, wherein the first abutting portion is provided with a rolling member that is rolled against the second abutting portion. The bicycle brake according to claim 3, wherein the second abutting portion includes a guiding portion and a cover portion, the roller member is rolled against the guiding portion, and the cover portion is disposed on the guiding portion and the cover Set at least part of the roller. The bicycle brake according to claim 4, wherein the guiding portion has an arc shape, the first abutting portion includes a base body and a roller seat, the roller seat is disposed on the base body, and the roller member is rotatably disposed on the The roller base has an arc shape, and the radius of curvature of the base body is larger than a radius of curvature of the guiding segment. The bicycle brake according to claim 1, further comprising an elastic member, wherein the two ends of the elastic member abut against the base and the second arm assembly, respectively, and the second end portion and the fourth end portion There is a tendency to move away from the brake side. The bicycle brake of claim 6, wherein the first arm assembly is pivotally mounted to the base via a first pivot; the second arm assembly is pivotally mounted to the base via a second pivot a seat, and the second pivot passes through the elastic member. The bicycle brake according to claim 7, wherein the base is provided with a pad portion, the second arm assembly abuts the pad portion, the elastic member is disposed around the pad portion, and the second pivot shaft passes through the a two-arm assembly and the pad portion, the second arm assembly pivoting relative to the pad portion with the second pivot axis as an axis. The bicycle brake according to claim 8, wherein the first end portion is interposed between the base and the third end; the first arm assembly further includes a first abutting portion, the second arm The assembly further includes a second abutting portion disposed at the third end portion, the second abutting portion is disposed above the first abutting portion in a pivotal direction; the first and second arm assemblies The first abutting portion and the second abutting portion have substantially the same size in the first direction; the base is viewed along the first direction The first abutting portion is provided with a rolling member that is pressed against the second abutting portion, and the second abutting portion includes a guiding portion and a cover portion, and the rolling member is rolled In the guiding section, the cover portion is disposed on the guiding portion and covers at least a part of the rolling member, the cover portion extends perpendicularly to the guiding portion, the guiding portion is arc-shaped; the first abutting portion The base body includes a base body and a roller base extending along the first direction to the first end portion. The roller base is disposed at an end of the base body and laterally protrudes from the base body, and the base body has an arc And the radius of curvature of the base body is greater than the radius of curvature of the guiding portion, the rolling member is rotatably disposed on the roller seat; the second arm assembly is further provided with a stopping portion, the stopping portion can selectively abut the a first end portion extending from the fourth end portion between the fourth end portion and the base, the first end portion extending across the stop portion; the second end portion A braking member is further disposed on each of the fourth end portion and each of the fourth end portions, and each of the braking members is in contact with each of the braking edges. The bicycle brake according to any one of claims 1 to 9, wherein the base is provided with an arm portion adjacent to the first end portion, and one of the two ends of the arm portion is provided with one of the two defining structures, The other of the two defined structures is fixed to the frame.