Brake adjusting mechanism, brake device and brake device

Abstract

The utility model relates to the technical field of vehicle braking, and provides a brake adjusting mechanism, a brake device and a brake device.The brake adjusting mechanism comprises a first rocker arm, a cam piece, a second rocker arm and an adjusting assembly, the cam piece, the second rocker arm and the adjusting assembly are all installed on the first rocker arm, and the second rocker arm is used for synchronously moving with the first rocker arm; the cam part is driven to move in the braking direction; when the first rocker arm moves to a preset area, the adjusting assembly drives the second rocker arm to move relative to the first rocker arm so as to drive the cam part to rotate by a preset angle, and therefore the initial position of the cam part moving in the braking direction is adjusted. The brake effect is not affected after the brake shoes are abraded, the structure of the brake adjusting mechanism can be simplified, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle braking, in particular to a brake adjustment mechanism, a brake device and a brake device. Background Art

[0002] In bicycles and electric bicycles, braking is performed by driving the brake shoe to create friction against the wheel. After repeated friction between the brake shoe and the wheel, the brake shoe will wear out to a certain extent, and the brake shoe will need to be driven to move a greater distance to make it come into contact with the wheel. During the braking process, the braking distance of the brake line driving the brake shoe may be insufficient or the distance the brake line moves may be too long, affecting the braking effect. By adjusting the position of the brake shoe, the braking effect can be maintained even when the brake shoe is worn. The existing brake adjustment mechanism for adjusting the position of the brake shoe has a complex structure and a high production cost. Utility Model Content

[0003] The purpose of the utility model is to provide a brake adjustment mechanism, a brake device and a brake device, aiming to solve the problems of complex structure and high cost of the brake adjustment mechanism in the prior art.

[0004] In the first aspect, the present application provides a brake adjustment mechanism, comprising a first rocker arm, a cam member, a second rocker arm and an adjustment assembly, wherein the cam member, the second rocker arm and the adjustment assembly are all mounted on the first rocker arm, and the second rocker arm is used to move synchronously with the first rocker arm to drive the cam member to move in the braking direction; when the first rocker arm moves to a preset area, the adjustment assembly drives the second rocker arm to move relative to the first rocker arm to drive the cam member to rotate a preset angle, thereby adjusting the initial position of the cam member to move in the braking direction.

[0005] In one embodiment, the adjustment assembly includes a worm, and the second rocker arm includes a worm wheel adapted to the worm; or,

[0006] The adjusting assembly includes a first gear, and the second rocker arm includes a second gear adapted to the first gear.

[0007] In one embodiment, the adjustment assembly further includes a motor for driving the worm or the first gear to rotate, and the motor is mounted on the first rocker arm.

[0008] In one embodiment, the brake adjustment mechanism further includes a distance sensor for detecting the position of the first rocker arm or for detecting the position of the adjustment assembly.

[0009] In one embodiment, a power line of the motor passes between the worm gear and the first rocker arm.

[0010] In one embodiment, the adjustment assembly further includes a waterproof box disposed on the first rocker arm, and the motor is located in the waterproof box.

[0011] In one embodiment, the brake adjustment mechanism further includes a first elastic member mounted on the cam member and configured to provide a restoring force for the first rocker arm.

[0012] In a second aspect, the present application provides a brake device, comprising a brake shoe and the brake adjustment mechanism as described in the first aspect above, wherein the cam member is in conflict with the brake shoe.

[0013] In one embodiment, the brake device further includes a housing, the first rocker arm, the second rocker arm, and the adjustment assembly are all located outside the housing, and the brake shoe is located inside the housing.

[0014] In a third aspect, the present application provides a braking device, comprising a vehicle lock and the braking device as described in the second aspect above.

[0015] The brake adjustment mechanism provided by the present invention has the following advantages: the brake adjustment mechanism includes a cam member, a first rocker arm, a second rocker arm, and an adjustment assembly. The cam member, the second rocker arm, and the adjustment assembly are all mounted on the first rocker arm. The second rocker arm is configured to move synchronously with the first rocker arm to drive the cam member in a braking direction, thereby causing the cam member to drive the brake shoe to brake the wheel. When the first rocker arm moves to a predetermined area, the adjustment assembly drives the second rocker arm to move relative to the first rocker arm, driving the cam member to rotate by a predetermined angle, thereby adjusting the initial position of the cam member in the braking direction. This, in turn, causes the cam member to drive the brake shoe in the braking direction, thereby adjusting the initial position of the brake shoe in the braking direction. This ensures that the braking effect is not affected even after the brake shoe wears. Because the cam member, the second rocker arm, and the adjustment assembly are all mounted on the first rocker arm, the second rocker arm can drive the cam member in the braking direction under the drive of the first rocker arm, and can also adjust the initial position of the cam member under the drive of the adjustment assembly. This reduces the number of components in the brake adjustment mechanism, simplifies the structure of the brake adjustment mechanism, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0017] Figure 1 A schematic diagram of a brake adjustment mechanism provided in an embodiment of the present utility model;

[0018] Figure 2 A schematic diagram of a brake adjustment mechanism provided by an embodiment of the present invention from another perspective;

[0019] Figure 3 A schematic diagram of the connection relationship between the brake adjustment mechanism and the brake shoe provided in an embodiment of the present utility model;

[0020] Figure 4 A schematic diagram of a brake device provided in an embodiment of the present utility model.

[0021] Among them, the reference numerals in the figures are:

[0022] 10. Brake adjustment mechanism; 11. First rocker arm; 12. Second rocker arm; 121. Worm gear; 13. Cam member; 14. Adjustment assembly; 141. Worm; 142. Motor; 143. Waterproof box; 15. Distance sensor; 16. First elastic member; 20. Brake shoe; 30. Brake cable; 40. Housing. DETAILED DESCRIPTION

[0023] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0024] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, when the phrases "in one embodiment" or "in some embodiments" appear in various places throughout this specification, not all references are to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0025] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0027] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] Please refer to Figures 1 to 3 Now, the brake adjustment mechanism in the embodiment of the present utility model is described.

[0029] The brake adjustment mechanism 10 includes a first rocker arm 11, a second rocker arm 12, a cam member 13 and an adjusting assembly 14. The second rocker arm 12, the cam member 13 and the adjusting assembly 14 are all installed on the first rocker arm 11. The second rocker arm 12 is used to move synchronously with the first rocker arm 11 to drive the cam member 13 to move in the braking direction; when the first rocker arm 11 moves to a preset area, the adjusting assembly 14 drives the second rocker arm 12 to move relative to the first rocker arm 11 to drive the cam member 13 to rotate a preset angle, thereby adjusting the initial position of the cam member 13 to move in the braking direction.

[0030] Specifically, the adjustment assembly 14 is fixedly mounted on the first rocker arm 11, and the second rocker arm 12 is fixedly mounted on the first rocker arm 11 via the adjustment assembly 14. Furthermore, the second rocker arm 12 is fixedly mounted on the cam member 13. When the first rocker arm 11 is driven by an external force to move in the braking direction, the first rocker arm 11 drives the second rocker arm 12 to move, which in turn drives the cam member 13 to rotate, causing the cam member 13 to move in the braking direction. The cam member 13 contacts the brake shoe 20, which rotates and drives the brake shoe 20 toward the wheel (braking direction) until it contacts the wheel, achieving braking. Once the brake shoe 20 contacts the wheel, the first rocker arm 11 cannot move further in the braking direction. As the brake shoe 20 wears, the gap between the brake shoe 20 and the wheel increases. The more severely the brake shoe 20 wears, the larger the gap between the brake shoe 20 and the wheel. This requires the brake shoe 20 to move a longer distance to contact the wheel, thereby allowing the first rocker arm 11 to move a longer distance when driving the brake shoe 20. When the brake shoe 20 wears to a certain extent, the first rocker arm 11 moves to a predetermined area. When the first rocker arm 11 moves to the predetermined area, the adjustment assembly 14 drives the second rocker arm 12 to move relative to the first rocker arm 11, thereby causing the cam member 13 to rotate by a predetermined angle relative to its initial position, i.e., the cam member 13 rotates to a new initial position. When the cam member 13 rotates by the predetermined angle relative to its initial position, the cam member 13 drives the brake shoe 20 to move a predetermined distance toward the wheel. Even when the brake shoe 20 moves to the new initial position, the initial position of the first rocker arm 11 remains unchanged. When braking again, the first rocker arm 11 drives the cam member 13 to rotate via the second rocker arm 12. The cam member 13 and the brake shoe 20 both begin to move from their corresponding new initial positions. The brake shoe 20 only needs to move a small distance to engage the wheel, thereby achieving braking by moving the first rocker arm 11 a small distance. Therefore, even if the brake shoe 20 wears, the braking travel of the first rocker arm 11 will not increase, thereby not affecting the braking effect of the brake shoe 20. Furthermore, because the cam member 13, the second rocker arm 12, and the adjustment assembly 14 are all mounted on the first rocker arm 11, the second rocker arm 12 can drive the cam member 13 in the braking direction under the drive of the first rocker arm 11, and can also adjust the initial position of the cam member 13 under the drive of the adjustment assembly 14. This reduces the number of components in the brake adjustment mechanism 10, simplifies the structure of the brake adjustment mechanism 10, and reduces production costs.

[0031] In one embodiment, the adjustment assembly 14 includes a worm 141, and the second rocker arm 12 includes a worm wheel 121 adapted to the worm 141. When the worm 141 is fixed on the first rocker arm 11, the worm wheel 121 is fixed to the first rocker arm 11 through the worm 141, and moves synchronously with the first rocker arm 11 to drive the cam member 13 to rotate. When the first rocker arm 11 moves to a preset area, the worm 141 rotates, driving the worm wheel 121 to rotate relative to the first rocker arm 11, thereby driving the cam member 13 to rotate to adjust the initial position of the cam member 13 when it moves in the braking direction. By providing the worm 141, the worm wheel 121 can move synchronously with the first rocker arm 11 and relative to the first rocker arm 11, thereby achieving braking of the cam member 13 and adjustment of the initial position.

[0032] In another embodiment, the adjustment assembly 14 includes a first gear, and the second rocker arm 12 includes a second gear adapted to the first gear. Specifically, the first gear and the second gear are engaged, and when the first gear is fixed on the first rocker arm 11, the second gear is fixed to the first rocker arm 11 through the first gear, and moves synchronously with the first rocker arm 11 to drive the cam member 13 to rotate. When the first rocker arm 11 moves to a preset area, the first gear rotates, driving the second gear to rotate relative to the first rocker arm 11, thereby driving the cam member 13 to rotate to adjust the initial position of the cam member 13 when it moves in the braking direction. By providing a second gear adapted to the first gear, the first gear can be fixed to the first rocker arm 11, and the angle of the first gear relative to the first rocker arm 11 can be adjusted by rotating the second gear, thereby achieving braking and adjustment of the initial position of the cam member 13.

[0033] In one embodiment, the adjustment assembly 14 further includes a motor 142 for driving the worm 141 or the first gear to rotate. The motor 142 is mounted on the first rocker arm 11 , thereby automatically adjusting the worm 141 or the first gear, and further automatically adjusting the cam member 13 .

[0034] In one embodiment, the brake adjustment mechanism 10 further includes a distance sensor 15 for detecting the position of the first rocker arm 11 or the adjustment assembly 14. Specifically, the distance sensor 15 detects the distance between the first rocker arm 11 or the adjustment assembly 14. When the distance sensor 15 determines that the detected distance is within a preset range, the first rocker arm 11 is determined to be within a preset area, and the motor 142 is instructed to rotate the worm 141 or the first gear. Alternatively, the distance sensor 15 transmits the detected distance information to a controller. When the controller determines that the first rocker arm 11 is within the preset area based on the distance information, the controller instructs the motor 142 to rotate the worm 141 or the first gear. This allows the cam member 13 to be automatically adjusted when the brake shoe wears.

[0035] In one embodiment, the motor 142 is connected to the controller via a power cord that passes between the worm gear 121 and the first rocker arm 11. Alternatively, the power cord passes between the second gear and the first rocker arm 11. Because the motor 142 is mounted on the first rocker arm 11, it moves with the first rocker arm 11, causing the power cord to also move. By placing the power cord between the worm gear 121 and the first rocker arm 11 or between the second gear and the first rocker arm 11, space can be saved, cord entanglement can be avoided, and the reliability of the brake adjustment mechanism 10 can be improved.

[0036] In one embodiment, the adjustment assembly 14 further includes a waterproof box 143 disposed on the first rocker arm 11 , and the motor 142 is located in the waterproof box 143 , thereby reducing the space occupied by the adjustment assembly 14 while ensuring the reliability of the adjustment assembly 14 .

[0037] Exemplarily, a mounting shell is provided on the first rocker arm 11 , a worm 141 and a waterproof box 143 are provided in the mounting shell, and the motor 142 is located in the waterproof box 143 .

[0038] In another embodiment, the user may also rotate the worm 141 to drive the worm wheel 121 to rotate, or rotate the first gear to drive the second gear to rotate, so as to adjust the initial position of the cam member 13 moving in the braking direction.

[0039] In another embodiment, the adjusting assembly 14 includes a first gear and an escapement engaged with the first gear, and the first gear is configured to rotate when the escapement releases the first gear, thereby driving the second gear to rotate.

[0040] In one embodiment, the brake adjustment mechanism 10 further includes a first elastic member 16 mounted on the cam member 13 for providing a restoring force to the first rocker arm 11. For example, when the first rocker arm 11 moves to apply braking, the first elastic member 16 is in a compressed state. When the first rocker arm 11 returns to its original position, the first elastic member 16 provides a restoring force to the first rocker arm 11, thereby improving the reliability of the brake adjustment mechanism 10.

[0041] like Figure 4As shown, the present application also provides a braking device, including a brake shoe 20 and the aforementioned brake adjustment mechanism 10, wherein the cam member 13 abuts against the brake shoe 20. For example, the braking device includes two brake shoes 20, each of which is hinged at one end and abuts against the cam member 13 at the other end. The braking device also includes a brake cable 30. When the brake cable 30 is pulled, the brake cable 30 drives the first rocker arm 11 to move. Driven by the first rocker arm 11, the cam member 13 rotates, pushing the two brake shoes 20 outward to expand, so that both brake shoes 20 are in contact with the wheel, thereby braking the wheel. When the brake cable 30 is released, the first rocker arm 11 resets, and simultaneously, the two brake shoes 20 return to their initial position. By providing the aforementioned brake adjustment mechanism 10 in the braking device, the initial position of the brake shoe 20 when it moves in the braking direction can be adjusted when the brake shoe 20 wears, without affecting the braking effect. Furthermore, the brake adjustment mechanism 10 has a simple structure, which reduces processing difficulty and production costs.

[0042] In one embodiment, the brake device further includes a housing 40. The first rocker arm 11, the second rocker arm 12, and the adjustment assembly 14 are all located outside the housing 40, and the brake shoe 20 is located inside the housing 40. A cam member 13 passes through the housing 40, with one end mounted on the first rocker arm 11 and the other end contacting the brake shoe 20. By locating the adjustment assembly 14 outside the housing 40, the initial position of the brake shoe 20 can be adjusted by adjusting the cam member 13, thereby simplifying the structure of the brake device.

[0043] The present application also provides a braking device, comprising a vehicle lock and the above-mentioned braking device. For example, a mounting cavity for mounting the vehicle lock is provided in the housing 40, and the vehicle lock is used to brake the wheel.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A brake adjustment mechanism, characterized in that: It includes a first rocker arm, a cam member, a second rocker arm and an adjusting assembly. The cam member, the second rocker arm and the adjusting assembly are all installed on the first rocker arm. The second rocker arm is used to move synchronously with the first rocker arm to drive the cam member to move in the braking direction; when the first rocker arm moves to a preset area, the adjusting assembly drives the second rocker arm to move relative to the first rocker arm to drive the cam member to rotate a preset angle, thereby adjusting the initial position of the cam member to move in the braking direction.

2. The brake adjustment mechanism according to claim 1, characterized in that: The adjusting assembly includes a worm, and the second rocker arm includes a worm wheel adapted to the worm; or The adjusting assembly includes a first gear, and the second rocker arm includes a second gear adapted to the first gear.

3. The brake adjustment mechanism according to claim 2, characterized in that: The adjustment assembly further includes a motor for driving the worm or the first gear to rotate, and the motor is mounted on the first rocker arm.

4. The brake adjustment mechanism according to claim 3, characterized in that: The brake adjustment mechanism further includes a distance sensor for detecting the position of the first rocker arm or for detecting the position of the adjustment assembly.

5. The brake adjustment mechanism according to claim 3, characterized in that: A power line of the motor passes between the worm gear and the first rocker arm.

6. The brake adjustment mechanism according to claim 3, characterized in that: The adjustment assembly further includes a waterproof box arranged on the first rocker arm, and the motor is located in the waterproof box.

7. The brake adjustment mechanism according to claim 1, characterized in that: The brake adjustment mechanism further includes a first elastic member mounted on the cam member and configured to provide a restoring force for the first rocker arm.

8. A braking device, characterized in that: The invention comprises a brake shoe and a brake adjustment mechanism according to any one of claims 1 to 7, wherein the cam member is in conflict with the brake shoe.

9. The brake device according to claim 8, characterized in that: The brake device further includes a housing, the first rocker arm, the second rocker arm and the adjustment assembly are all located outside the housing, and the brake shoe is located inside the housing.

10. A braking device, characterized in that: The invention comprises a vehicle lock and a braking device as claimed in claim 8 or 9.

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