Brake adjusting mechanism, brake device and brake device

Abstract

The invention 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 part, a second rocker arm and an adjusting assembly, the cam part, 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 present invention relates to the technical field of vehicle braking, and 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 frictional force against the wheel. After the brake shoe rubs against the wheel many times, the brake shoe will wear to a certain extent, and the brake shoe needs to be driven to move a longer distance to make the brake shoe contact 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. Summary of the invention

[0003] The object of the present invention 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 adjusting assembly, wherein the cam member, the second rocker arm and the adjusting 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 a 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.

[0005] In one embodiment, the adjustment 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 matched with the first gear.

[0006] 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.

[0007] 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.

[0008] In one embodiment, a power line of the motor passes between the worm gear and the first rocker arm.

[0009] 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.

[0010] 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.

[0011] In a second aspect, the present application provides a brake device, comprising a brake shoe and a brake adjustment mechanism as described in the first aspect, wherein the cam member is in conflict with the brake shoe.

[0012] In one embodiment, the brake device further includes a shell, the first rocker arm, the second rocker arm and the adjustment assembly are all located outside the shell, and the brake shoe is located inside the shell.

[0013] 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.

[0014] The brake adjustment mechanism provided by the present invention has the following beneficial effects: the brake adjustment mechanism comprises 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 used to move synchronously with the first rocker arm to drive the cam member to move in the braking direction, so that the cam member drives the brake shoe to brake the wheel. 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, so as to adjust the initial position of the cam member moving in the braking direction, and then the cam member drives the brake shoe to move in the braking direction, so as to adjust the initial position of the brake shoe moving in the braking direction, so that the braking effect will not be affected after the brake shoe is worn. Since 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 to move 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, so that the components of the brake adjustment mechanism can be reduced, the structure of the brake adjustment mechanism can be simplified, and the production cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0016] Figure 1 A schematic diagram of a brake adjustment mechanism provided by an embodiment of the present invention; Figure 2 A schematic diagram of a brake adjustment mechanism provided by an embodiment of the present invention from another perspective; Figure 3A schematic diagram of the connection relationship between the brake adjustment mechanism and the brake shoe provided in an embodiment of the present invention; Figure 4 A schematic diagram of a brake device provided in an embodiment of the present invention.

[0017] Among them, the reference numerals in the figure are: 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 line; 40. housing. DETAILED DESCRIPTION

[0018] Embodiments of the present invention are described in detail below, 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 be used to explain the present invention, and should not be construed as limiting the present invention.

[0019] Reference throughout the 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 the specification, not all references are to the same embodiment. Furthermore, in one or more embodiments, the particular features, structures, or characteristics may be combined in any suitable manner.

[0020] 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 drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Please refer to Figures 1 to 3 Now, the brake adjustment mechanism in the embodiment of the present invention is described.

[0024] 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.

[0025] 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 through the adjustment assembly 14. At the same time, the second rocker arm 12 is fixedly mounted on the cam member 13. When the first rocker arm 11 moves in the braking direction driven by an external force, the first rocker arm 11 drives the second rocker arm 12 to move, and the second rocker arm 12 drives the cam member 13 to rotate, so that the cam member 13 moves in the braking direction. The cam member 13 conflicts with the brake shoe 20, and the cam member 13 rotates to drive the brake shoe 20 to move in the direction close to the wheel (braking direction) until it moves to a position in contact with the wheel, thereby achieving braking. After the brake shoe 20 moves to a position in contact with the wheel, the first rocker arm 11 cannot continue to move in the braking direction. When the brake shoe 20 is worn, the gap between the brake shoe 20 and the wheel increases, and the more severe the wear of the brake shoe 20 is, the larger the gap between the brake shoe 20 and the wheel is, so that the brake shoe 20 needs to move a longer distance before it can contact the wheel, and thus the first rocker arm 11 can move a longer distance when driving the brake shoe 20 to move. When the brake shoe 20 is worn to a certain extent, the first rocker arm 11 moves to a preset area. When the first rocker arm 11 moves to the preset area, the adjustment component 14 drives the second rocker arm 12 to move relative to the first rocker arm 11, thereby driving the cam member 13 to rotate a preset angle relative to the initial position, that is, the cam member 13 rotates to a new initial position. When the cam member 13 rotates a preset angle relative to the initial position, the cam member 13 drives the brake shoe 20 to move a preset distance in the direction close to the wheel, even if the brake shoe 20 moves to a new initial position, and 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 through the second rocker arm 12, and the cam member 13 and the brake shoe 20 both start to move from the corresponding new initial positions. The brake shoe 20 can fit the wheel by moving a small distance, so that the first rocker arm 11 can achieve braking by moving a small distance. Therefore, in the case of wear of the brake shoe 20, the movement stroke of the first rocker arm 11 during braking will not increase, and the braking effect of the brake shoe 20 will not be affected. At the same time, since the cam member 13, the second rocker arm 12 and the adjustment component 14 are all installed on the first rocker arm 11, the second rocker arm 12 can drive the cam member 13 to move 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 component 14. Therefore, the components of the brake adjustment mechanism 10 can be reduced, the structure of the brake adjustment mechanism 10 can be simplified, and the production cost can be reduced.

[0026] 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 can move relative to the first rocker arm 11, thereby achieving braking of the cam member 13 and adjustment of the initial position.

[0027] 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 meshed, 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 setting 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, so as to achieve braking of the cam member 13 and adjustment of the initial position.

[0028] 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 , so that the worm 141 or the first gear can be automatically adjusted, and the cam member 13 can be automatically adjusted.

[0029] 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 for detecting the position of the adjustment assembly 14. Specifically, the distance sensor 15 collects the distance between the first rocker arm 11 or the adjustment assembly 14. When the distance sensor 15 determines that the collected distance is within a preset range, it is determined that the first rocker arm 11 is located in a preset area, and the motor 142 is instructed to drive the worm 141 or the first gear to rotate. Alternatively, the distance sensor 15 sends the collected distance information to the controller, and when the controller determines that the first rocker arm 11 is located in the preset area according to the distance information, the motor 142 is instructed to drive the worm 141 or the first gear to rotate, so that the cam member 13 can be automatically adjusted when the brake shoe is worn.

[0030] In one embodiment, the motor 142 is connected to the controller via a power line, and the power line passes between the worm gear 121 and the first rocker arm 11. Alternatively, the power line passes between the second gear and the first rocker arm 11. Since the motor 142 is mounted on the first rocker arm 11, it moves with the first rocker arm 11, so that the power line also moves. By arranging the power line 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, the power line can be prevented from being entangled, and the reliability of the brake adjustment mechanism 10 can be improved.

[0031] In one embodiment, the adjustment component 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 occupied space of the adjustment component 14 while ensuring the reliability of the adjustment component 14 .

[0032] 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 .

[0033] 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.

[0034] In another embodiment, the adjusting assembly 14 includes a first gear and an escapement engaged on 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.

[0035] In one embodiment, the brake adjustment mechanism 10 further includes a first elastic member 16 mounted on the cam member 13 and configured to provide a restoring force to the first rocker arm 11. Exemplarily, when the first rocker arm 11 moves to brake, the first elastic member 16 is in a compressed state, and when the first rocker arm 11 is reset, 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.

[0036] like Figure 4As shown, the present application also provides a brake device, including a brake shoe 20 and the above-mentioned brake adjustment mechanism 10, and the cam member 13 conflicts with the brake shoe 20. Exemplarily, the brake device includes two brake shoes 20, one end of the two brake shoes 20 is hinged, and the other end conflicts with the cam member 13. The brake device also includes a brake wire 30. When the brake wire 30 is pulled, the brake wire 30 drives the first rocker arm 11 to move, and the cam member 13 rotates under the drive of the first rocker arm 11, pushing the two brake shoes 20 to expand outward, so that the two brake shoes 20 are both in contact with the wheel to achieve braking of the wheel. When the brake wire 30 is released, the first rocker arm 11 is reset, and at the same time, the two brake shoes 20 return to the initial position. By setting the above-mentioned brake adjustment mechanism 10 in the brake device, when the brake shoe 20 is worn, the initial position of the brake shoe 20 when it moves in the braking direction can be adjusted without affecting the braking effect, and the brake adjustment mechanism 10 has a simple structure, which reduces the processing difficulty and production cost.

[0037] 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. The cam member 13 passes through the housing 40, one end of which is mounted on the first rocker arm 11, and the other end of which contacts the brake shoe 20. By arranging the adjustment assembly 14 outside the housing 40 and adjusting the initial position of the brake shoe 20 by adjusting the cam member 13, the structure of the brake device can be simplified.

[0038] The present application also provides a braking device, including a vehicle lock and the above-mentioned braking device. Exemplarily, a mounting cavity for mounting the vehicle lock is provided in the housing 40, and the vehicle lock is used to brake the wheel.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope 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, wherein the cam member, the second rocker arm and the adjusting 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 adjusting assembly drives the second rocker arm to move relative to the first rocker arm to drive the cam member to rotate by 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 matched with the first gear.

3. The brake adjustment mechanism according to claim 2, characterized in that: The adjusting assembly also 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 comprises 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 also 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 also includes a first elastic member installed on the cam member and used for providing a restoring force for the first rocker arm.

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

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

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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