Brake device and brake device

Abstract

The utility model relates to the technical field of vehicle braking, and provides a brake device and a brake device.The brake device comprises a brake control assembly and a shoe block assembly, and the brake control assembly is used for abutting against one end of the shoe block assembly so as to drive the shoe block assembly to move in the braking direction for braking; and when the shoe block assembly is abraded, the other end of the shoe block assembly is driven to move so as to adjust the initial position of the shoe block assembly during braking, and a good braking effect can also be achieved when the shoe block assembly is abraded.

Description

Technical Field

[0001] This utility model relates to the field of vehicle braking technology, and in particular to braking devices and braking mechanisms. Background Technology

[0002] Braking systems generally consist of a brake shoe assembly and a brake control assembly. When braking is required, the brake control assembly drives the brake shoe assembly to move, causing it to engage and rub against the wheel assembly, thereby braking the wheel assembly. After a period of use, the brake shoe assembly will experience wear. The brake shoe assembly will then require a greater stroke to engage with the wheel assembly, or its maximum stroke may not be sufficient to achieve engagement, resulting in poor braking performance. Utility Model Content

[0003] The purpose of this invention is to provide a braking device and a braking system that aims to solve the problem of poor braking performance after the wear of the shoe block assembly in the prior art.

[0004] In a first aspect, this application provides a braking device, including a braking control component and a shoe block assembly. The braking control component is used to abut against one end of the shoe block assembly to drive the shoe block assembly to move in the braking direction for braking, and to drive the other end of the shoe block assembly to move when the shoe block assembly is worn, so as to adjust the initial position of the shoe block assembly when braking.

[0005] In one embodiment, the braking device further includes a brake fine-tuning component, which includes a ratchet member and an adjustment component. The brake actuation component is used to drive the ratchet member to move when the shoe block assembly is worn, and the adjustment component is used to move under the drive of the ratchet member to drive the other end of the shoe block assembly to move.

[0006] In one embodiment, the brake fine-tuning assembly further includes a pawl, which includes an escapement and an extension connected to one end of the escapement. The escapement engages with the ratchet, and the brake actuation assembly is used to abut the extension when the shoe assembly wears, causing the escapement to release the ratchet, thereby rotating the ratchet and changing the engagement position of the escapement on the ratchet.

[0007] In one embodiment, the ratchet member includes a ratchet portion and a gear portion connected to each other, the pawl member engages with the ratchet portion, and the shoe assembly is used to rotate under the drive of the gear portion.

[0008] In one embodiment, the brake fine-tuning assembly further includes an external component connected to the adjustment assembly, the external component engaging with the ratchet component and rotating under the drive of the ratchet component to drive the adjustment assembly to move.

[0009] In one embodiment, the adjustment assembly includes a fixing member and an adjusting member. The fixing member has a limiting groove, and one end of the shoe block assembly is adjustablely inserted into one end of the limiting groove. The adjusting member is rotatably mounted in the limiting groove and has a first curved surface with a variable diameter. The adjusting member is used to rotate under the drive of the ratchet member, so that the shoe block assembly contacts different positions with the first curved surface to adjust the initial position of the shoe block assembly when braking.

[0010] In one embodiment, the shoe assembly includes a brake shoe and a connector connected to one end of the brake shoe. One end of the connector extends into the limiting groove in an adjustable position. The connector is used to contact different positions of the first curved surface when the adjusting member rotates, so as to adjust the initial position of the shoe assembly when braking.

[0011] In one embodiment, the brake fine-tuning assembly further includes a positioning element, on which the ratchet element is rotatably mounted.

[0012] In one embodiment, the brake fine-tuning assembly further includes a first elastic element that drives the ratchet member to rotate.

[0013] Secondly, this application provides a braking device, including the braking device as described in the first aspect above and a vehicle lock.

[0014] The beneficial effects of the braking device provided by this utility model are as follows: The braking device includes a braking control component and a shoe block component. The braking control component is used to abut against one end of the shoe block component to drive the shoe block component to move in the braking direction for braking. When the shoe block component is worn, it drives the other end of the shoe block component to move to adjust the initial position of the shoe block component when braking. Thus, the position of the shoe block component can be adaptively adjusted when the shoe block component is worn to compensate for the wear of the shoe block component. The braking effect will not be affected when the shoe block component is worn. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0016] Figure 1 A schematic diagram of a braking device provided in an embodiment of this utility model;

[0017] Figure 2 A schematic diagram illustrating the working principle of a braking device provided in an embodiment of this utility model;

[0018] Figure 3 A schematic diagram illustrating the working principle of a braking device provided in an embodiment of this utility model;

[0019] Figure 4 A schematic diagram of the ratchet and pawl components of a braking device provided in an embodiment of the present invention;

[0020] Figure 5 A schematic diagram illustrating the rotation principle of the adjusting component of a braking device provided in an embodiment of this utility model;

[0021] Figure 6 A schematic diagram illustrating the engagement of the ratchet and pawl components of a braking device provided in an embodiment of this utility model;

[0022] Figure 7 A schematic diagram of the ratchet component of a braking device provided in an embodiment of the present invention;

[0023] Figure 8 A schematic diagram of the fixing component of the braking device provided in an embodiment of the present utility model;

[0024] Figure 9 A schematic diagram of the installation of the fixing component and the external component of the braking device provided in an embodiment of the present utility model;

[0025] Figure 10 A schematic diagram of the installation of the fixing component and adjusting component of the braking device provided in an embodiment of the present utility model;

[0026] Figure 11 A schematic diagram of the fixing member of the braking device provided in one embodiment of the present utility model from another perspective;

[0027] Figure 12 A schematic diagram of a braking device provided in another embodiment of this utility model;

[0028] Figure 13 A schematic diagram of a braking device provided in another embodiment of this utility model;

[0029] Figure 14 for Figure 13 The diagram shown illustrates the working principle of the braking device.

[0030] Figure 15 A schematic diagram of a braking device provided in another embodiment of this utility model;

[0031] Figure 16 for Figure 15 The diagram shown illustrates the working principle of the braking device.

[0032] Figure 17 This is a schematic diagram of the braking device provided in an embodiment of the present invention from another perspective.

[0033] The following are the labeling elements in the figure:

[0034] 10. Brake fine-tuning assembly; 11. Ratchet; 111. Ratchet section; 112. Gear section; 113. First ratchet; 114. Second ratchet; 12. Pawl; 121. Escapement; 1211. Escapement body; 1212. Escape fork; 122. Extension; 13. Adjustment assembly; 131. Fixing member; 1311. Limiting groove; 1312. Mounting hole; 132. Adjustment member; 1321. First curved surface; 133. Cover plate; 134. Groove; 14. First elastic member; 15. External member; 16. Positioning member; 20. Brake control assembly; 21. Rotating member; 22. Rocker arm; 23. Brake member; 24. Second pawl; 25. Second elastic member; 26. Brake cable; 30. Shoe assembly; 31. Brake shoe; 32. Connector; 40. Housing. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0036] Throughout this specification, references to "an embodiment" or "an embodiment" mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of this application. Therefore, the phrases "in one embodiment" or "in some embodiments" appear in various places throughout the specification, and not all refer to the same embodiment. Furthermore, in one or more embodiments, particular features, structures, or characteristics may be combined in any suitable manner.

[0037] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0039] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] Please refer to Figures 1 to 16 The braking device in the embodiments of this utility model will now be described.

[0041] The braking device provided in this application can be a drum brake or a follow-up brake. The braking device includes a brake control assembly 20 and a shoe assembly 30. The brake control assembly 20 is used to abut against one end of the shoe assembly 30 to drive the shoe assembly 30 to move in the braking direction for braking, and to drive the other end of the shoe assembly 30 to move when the shoe assembly 30 wears, thereby adjusting the initial position of the shoe assembly 30 during braking. Therefore, when the shoe assembly 30 wears, the brake control assembly 20 can compensate for the position of the shoe assembly 30, and the braking effect will not be affected when the shoe assembly wears.

[0042] In one embodiment, the braking device includes a brake fine-tuning component 10, a brake control component 20, and a shoe block assembly 30. The brake fine-tuning component 10 includes a ratchet member 11 and a pawl member 12, with the pawl member 12 engaging with the ratchet member 11. The brake control component 20 has a first movement range and a second movement range. When the brake control component 20 moves within the first movement range, it drives the shoe block assembly 30 to brake. When wear of the shoe block assembly 30 causes the brake control component 20 to move to the second movement range, the brake control component 20 drives the ratchet member 11 to move, and the engagement position of the pawl member 12 on the ratchet member 11 changes. The ratchet member 11 is used to drive the shoe block assembly 30 to move, thereby adjusting the initial position of the shoe block assembly 30 when braking.

[0043] Specifically, the movement of the brake control assembly 20 within the first movement range refers to the reciprocating motion of the brake control assembly 20 between the initial position and the braking position. When the brake control assembly 20 moves from the initial position to the braking position, it drives the two shoe blocks 30 to expand outwards, causing both shoe blocks 30 to move from their initial positions to positions that engage with the wheel, thereby braking the wheel. When the brake control assembly 20 moves within the first movement range, it does not contact the ratchet member 11 or the pawl member 12. As the shoe blocks 30 wear, the gap between the shoe blocks 30 and the wheel increases. When the brake control assembly 20 moves to the braking position, the shoe blocks 30 cannot engage with the wheel, meaning there is a gap between the shoe blocks 30 and the wheel. This allows the brake control assembly 20 to continue moving beyond the first movement range, i.e., moving to the second movement range. When the brake control assembly 20 moves to the second movement range, it contacts the ratchet member 11 or the pawl member 12 to drive the ratchet member 11 to move. When the brake control assembly 20 moves away from the second movement range, the ratchet 11 stops rotating under the action of the pawl 12, causing the engagement position of the pawl 12 on the ratchet 11 to change. When the ratchet 11 moves, it drives the shoe block assembly 30 to move. When the ratchet 11 stops moving, the shoe block assembly 30 also stops moving, thus changing the position of the two shoe block assemblies 30 to compensate for the wear of the shoe block assembly 30, that is, changing the initial position of the shoe block assembly 30 when braking. When braking again, the shoe block assembly 30 starts moving from the new initial position. The brake control assembly 20 maintains the same movement stroke as before the wear of the shoe block assembly 30 to drive the shoe block assembly 30 to the braking position that is in contact with the wheel, thus achieving braking. Therefore, the initial position of the shoe block assembly 30 can be adaptively adjusted even when the shoe block assembly 30 is worn, achieving a better braking effect.

[0044] In one embodiment, the brake control assembly 20 includes a rotating member 21 and a rocker arm 22. When braking is required, the user squeezes the brake, driving the rocker arm 22 to rotate, which in turn drives the rotating member 21 to rotate. Alternatively, when braking is required, the user squeezes the brake, driving the rotating member 21 to rotate, thereby applying the brakes, and the rotating member 21 drives the rocker arm 22 to rotate. The rotating member 21 abuts against the shoe block assembly 30 and has a curved surface with a variable diameter. The rotation of the rotating member 21 changes the contact position between the shoe block assembly 30 and the rotating member 21, thereby increasing the distance between the shoe block assemblies 30. This allows the shoe block assemblies 30 to expand outwards, thereby braking the wheel.

[0045] It is understood that the braking device includes two shoe block assemblies 30, which may or may not be connected. During the rotation of the rotating member 21, one of the shoe block assemblies 30 may be driven to expand outward, or both shoe block assemblies 30 may be driven to expand outward simultaneously.

[0046] When the shoe block assembly 30 is not worn, during braking, the rocker arm 22 swings back and forth without contacting the pawl 12 and ratchet 11. When the shoe block assembly 30 is worn, the rocker arm 22 contacts the pawl 12, driving the ratchet 11 to rotate; or, when the shoe block assembly 30 is worn, the rocker arm 22 drives the ratchet 11 to rotate.

[0047] like Figures 1 to 7 As shown, in one embodiment, the pawl member 12 includes an escapement portion 121 and an extension portion 122 connected to one end of the escapement portion 121. The escapement portion 121 engages with the ratchet member 11. The escapement portion 121 includes an escapement body 1211 and two escape forks 1212 located at both ends of the escapement body 1211. The extension portion 122 extends in a direction different from the extending direction of the escape forks 1212 at one end of the escapement body 1211. Both escape forks 1212 engage with the ratchet teeth of the ratchet member 11. When the braking actuation assembly 20 moves to the second moving range, the braking actuation assembly 20 abuts against the extension portion 122, causing the escapement portion 121 to release the ratchet member 11, thereby causing the ratchet member 11 to rotate, and thus changing the engagement position of the escapement portion 121 on the ratchet member 11. Exemplarily, the ratchet member 11 has a clockwise rotation tendency. When the brake actuation assembly 20 is not in contact with the extension 122, the escapement 121 engages with the ratchet member 11, keeping the ratchet member 11 stationary. When the brake actuation assembly 20 abuts against the extension 122, the brake actuation assembly 20 pushes the extension 122 to move during movement, thereby moving the escapement 121, which releases the ratchet member 11, causing the ratchet member 11 to rotate. Subsequently, the ratchet member 11 rotates a certain angle under the action of the two escapement forks 1212 and is re-engaged by the two escapement forks 1212 to stop rotating, thereby changing the engagement position of the escapement 121 on the ratchet member 11. Exemplarily, the engagement position of the two escapement forks 1212 on the ratchet member 11 moves from one ratchet tooth to an adjacent ratchet tooth.

[0048] By engaging the ratchet 11 with the escapement 121, the ratchet 11 can be stopped rotating after rotating a specified angle, thereby moving the shoe block assembly 30 a corresponding distance to compensate for the initial position of the shoe block assembly 30, improving the compensation accuracy and thus improving the reliability of the brake.

[0049] In one embodiment, the brake fine-tuning assembly 10 further includes a first elastic element 14 that drives the ratchet member 11 to rotate. Exemplarily, the ratchet member 11 rotates clockwise under the force of the first elastic element 14.

[0050] In another embodiment, the ratchet component 11 can also rotate under the drive of a motor.

[0051] The ratchet 11 is released and rotated by the escapement 121, which drives the adjustment component 13 to rotate, thereby adjusting the initial position of the two shoe blocks 30 when braking.

[0052] In one embodiment, the ratchet member 11 includes a ratchet portion 111 and a gear portion 112 connected to each other. A pawl member 12 engages with the ratchet portion 111, and the shoe block assembly 30 is used to rotate under the drive of the gear portion 112. Exemplarily, the gear portion 112 and the ratchet portion 111 are stacked, and the rotation of the ratchet portion 111 drives the gear portion 112 to rotate, thereby driving the shoe block assembly 30 to move. The ratchet portion 111 and the gear portion 112 are arranged separately so that the element driving the ratchet member 11 to rotate and the element driven by the ratchet member 11 do not interfere with each other, thus improving the stability of the braking device.

[0053] In one embodiment, the brake fine-tuning assembly 10 further includes an adjustment assembly 13. The adjustment assembly 13 and the brake control assembly 20 are respectively located at both ends of the shoe block assembly 30. The adjustment assembly 13 is used to move under the drive of the ratchet member 11 to drive the shoe block assembly 30 to move. That is, the ratchet member 11 drives the shoe block assembly 30 to move through the adjustment assembly 13 located at one end of the shoe block assembly 30, which can improve the stability of the brake fine-tuning assembly 10.

[0054] In one embodiment, the brake fine-tuning assembly 10 further includes an external member 15 connected to the adjustment assembly 13. The external member 15 engages with a ratchet member 11 and is rotated under the drive of the ratchet member 11 to drive the adjustment assembly 13 to rotate. Exemplarily, the external member 15 is fixed to the adjustment assembly 13, and a gear portion 112 engages with the external member 15. Clockwise rotation of the gear portion 112 drives the external member 15 to rotate counterclockwise, thereby driving the adjustment assembly 13, which has the external member 15 fixed, to rotate. By providing the external member 15, the position and size of the ratchet member 11 can be designed more flexibly, improving the stability of the braking device.

[0055] In another embodiment, the adjusting assembly 13 is provided with a gear that meshes with the ratchet member 11, so that it can rotate under the drive of the ratchet member 11.

[0056] like Figures 4 to 11As shown, in one embodiment, the adjusting component 13 includes a fixing member 131 and an adjusting member 132. The fixing member 131 has a limiting groove 1311, and one end of the shoe block assembly 30 extends adjustablely into one end of the limiting groove 1311. The adjusting member 132 is rotatably mounted in the limiting groove 1311, and the adjusting member 132 has a first curved surface 1321 with a variable diameter. The adjusting member 132 is used to rotate under the drive of the ratchet member 11, so that the shoe block assembly 30 contacts different positions with the first curved surface 1321, thereby adjusting the initial position of the shoe block assembly 30 when braking. An external member 15 can be mounted on the adjusting member 132 to drive the adjusting member 132 to rotate. The cross-section of the adjusting member 132 is irregularly shaped, thus forming the first curved surface 1321 with a variable diameter. For example, the cross-section of the adjusting member 132 is formed by splicing two identical semicircles, and the diameters of the two semicircles do not coincide, thus forming the first curved surface 1321.

[0057] For example, since the adjusting member 132 has a first curved surface 1321 with a variable diameter, when the ratchet member 11 drives the adjusting member 132 to rotate, the two shoe block assemblies 30 contact different positions with the first curved surface 1321. The distance between the two shoe block assemblies 30 is equal to the diameter of the contact position of the first curved surface 1321. When the adjusting member 132 rotates, causing the two shoe block assemblies 30 to contact the position with the larger diameter of the first curved surface 1321, the distance between the two shoe block assemblies 30 increases, thereby changing the initial position of the two shoe block assemblies 30 during braking, that is, reducing the gap between the shoe block assemblies 30 and the wheel. When braking again, with the travel of the braking control assembly 20 remaining unchanged, the shoe block assemblies 30 can be made to adhere to the wheel to generate friction, thus achieving braking.

[0058] It is understandable that during the rotation of the adjusting member 132, one of the hoof block assemblies 30 can be driven to move, or two hoof block assemblies 30 can be driven to move in opposite directions at the same time.

[0059] In one embodiment, the two sides of the limiting groove 1311 are used to limit one end of the shoe block assembly 30 in a first direction when the shoe block assembly 30 brakes. Since the shoe block assembly 30 contacts the first curved surface 1321, the two sides of the limiting groove 1311 limit the shoe block assembly 30 in the first direction when it brakes. Therefore, when the shoe block assembly 30 brakes, it will not move in the first direction or in the tangential direction perpendicular to the first curved surface 1321, but can only roll on the first curved surface 1321. Therefore, the initial position of the shoe block assembly 30 will not change when it brakes. Therefore, after the shoe block assembly 30 wears down, the stability of the shoe block assembly 30 after adjusting its initial position will not be affected, further ensuring the braking effect of the shoe block assembly 30. The limitation of the shoe block assembly 30 by the two sides of the limiting groove 1311 means that one end of the shoe block assembly 30 cannot move significantly in the first direction within the limiting groove 1311. A certain gap can be left between one end of the shoe block assembly 30 and the side of the limiting groove 1311, so that one end of the shoe block assembly 30 can rotate within the limiting groove 1311.

[0060] like Figure 1 As shown, in one embodiment, the adjusting assembly 13 further includes a cover plate 133 mounted on the fixing member 131. The bottom surfaces of the cover plate 133 and the limiting groove 1311 are used to limit the shoe assembly 30 in a second direction. The second direction is perpendicular to the first direction and is perpendicular to the tangent of the bottom surface of the limiting groove 1311. By limiting the shoe assembly 30 in the second direction, the stability of the shoe assembly 30 during braking is further improved, and the braking effect is further enhanced.

[0061] In one embodiment, a mounting hole 1312 is provided at the bottom of the limiting groove 1311. The adjusting member 132 is rotatably installed in the mounting hole 1312. A groove 134 communicating with the mounting hole 1312 is provided on the fixing member 131, so that the external member 15 extends into the groove 134 and connects to the adjusting member 132 to drive the adjusting member 132 to rotate. By providing a groove 134 on the fixing member 131 to install the external member 15, the number of components for fixing the external member 15 and the fixing member 131 can be reduced, and the manufacturing difficulty can be reduced.

[0062] like Figure 12 As shown, in one embodiment, the brake shoe assembly 30 includes a brake shoe 31 and a connector 32 connected to one end of the brake shoe 31. One end of the connector 32 extends into a limiting groove 1311 in an adjustable position. The connector 32 is used to contact different positions of the first curved surface 1321 when the adjusting member 132 rotates, so as to adjust the initial position of the connector 32 when the brake shoe 31 is braked. By connecting the brake shoe 31 and the connector 32, with one end of the connector 32 extending into the limiting groove 1311, the processing and installation difficulty of the brake shoe 31 can be reduced.

[0063] In another embodiment, the brake shoe 31 and the connector 32 are integrally formed, thereby reducing installation steps and lowering production costs.

[0064] like Figure 13 and Figure 14 As shown, in one embodiment, the ratchet component 11 includes a first ratchet 113, and a pawl 12 engages with the first ratchet 113. When the brake control component 20 moves to the second moving range, the brake control component 20 abuts against the first ratchet 113 to drive the first ratchet 113 to rotate, causing the engagement position of the pawl 12 on the first ratchet 113 to change. The rotation of the first ratchet 113 drives the shoe block assembly 30 to move the adjustment component 13 to adjust the initial position of the two shoe block assemblies 30 when braking. Exemplarily, when the shoe block assembly 30 is worn, during braking, the rocker arm 22 abuts against the first ratchet 113, driving the first ratchet 113 to rotate clockwise. Then, the first ratchet 113 stops rotating under the action of the pawl 12, thereby causing the external component 15 to rotate counterclockwise by a certain angle, which in turn drives the adjustment component 13 to rotate, thereby adjusting the initial position of the shoe block assembly 30 when braking.

[0065] In one embodiment, the braking control assembly 20 includes a braking element 23 and a second pawl 24 connected to one end of the braking element 23. The braking element 23 may be a rocker arm 22, or it may include a rocker arm 22 and a rotating element 21, which may be integrally formed. When the braking control assembly 20 moves to a second moving range, the second pawl 24 drives the first ratchet 113 to rotate. Specifically, a second elastic element 25 is mounted on the braking element 23 to drive the second pawl 24 to rotate. When the braking control assembly 20 moves to the second moving range, the second pawl 24 drives the first ratchet 113 to rotate and compresses the second elastic element 25. When the braking control assembly 20 leaves the second moving range, the second elastic element 25 returns from the compressed state to its initial state, thereby preventing collision with the first ratchet 113 when it rotates. When the first ratchet 113 rotates, the pawl 12 re-engages on the first ratchet 113, causing the first ratchet 113 to stop rotating. This allows the first ratchet 113 to drive the adjustment component 13 to rotate at a specified angle, thereby compensating for the corresponding distance at the location of the shoe block component 30, improving the compensation accuracy, and thus improving the reliability of the brake.

[0066] like Figure 15 and Figure 16As shown, in one embodiment, the ratchet member 11 includes a second ratchet 114, and a pawl member 12 engages with the second ratchet 114. When the brake control component 20 moves to the second moving range, it abuts against the second ratchet 114, and when it leaves the second moving range, it drives the second ratchet 114 to rotate, causing the engagement position of the pawl member 12 on the second ratchet 114 to change. For example, when the shoe block assembly 30 is worn, during braking, the brake control component 20 moves to the second moving range, and the rocker arm 22 abuts against the second ratchet 114. When the brake control component 20 returns to its initial position from the second moving range, the rocker arm 22 drives the second ratchet 114 to rotate counterclockwise. Then, the second ratchet 114 stops rotating under the action of the pawl member 12, causing the external member 15 to rotate clockwise a certain distance, thereby driving the adjustment component 13 to rotate a certain angle, thus adjusting the initial position of the shoe block assembly 30 during braking.

[0067] In one embodiment, the braking control assembly 20 includes a braking element 23 and a second pawl 24 connected to one end of the braking element 23. The braking element 23 may be a rocker arm 22, or it may include a rocker arm 22 and a rotating element 21, which may be integrally formed. When the braking control assembly 20 moves to a second moving range, the second pawl 24 engages with the second ratchet 114. When the braking control assembly 20 leaves the second moving range, the second pawl 24 drives the second ratchet 114 to rotate. Specifically, a second elastic element 25 is mounted on the braking element 23 to drive the second pawl 24 to rotate. When the braking control assembly 20 moves to the second moving range, the second pawl 24 abuts against the second ratchet 114, and the second elastic element 25 is in a compressed state. When the braking control assembly 20 leaves the second moving range, the second elastic element 25 returns from the compressed state to its initial state, thereby engaging with the second ratchet 114 to drive the second ratchet 114 to rotate. When the second ratchet 114 rotates, the pawl 12 re-engages on the second ratchet 114, causing the second ratchet 114 to stop rotating. This allows the second ratchet 114 to drive the adjustment component 13 to rotate at a specified angle, thereby compensating for the corresponding distance at the location of the shoe block component 30, improving the compensation accuracy, and thus improving the reliability of the brake.

[0068] like Figure 1 As shown, in one embodiment, the braking device further includes a positioning member 16, which can be located between the two shoe assemblies 30. The ratchet member 11 is rotatably mounted on the positioning member 16, thereby saving installation space. In one embodiment, the braking device further includes a housing 40, in which the brake fine-tuning assembly 10, brake control assembly 20, ratchet member 11, pawl member 12, and shoe assembly 30 are all located. The positioning member 16 is fixedly mounted on the housing 40, thereby enabling the housing 40 to protect the internal components and improve the reliability of the braking device.

[0069] like Figure 17 As shown, in one embodiment, the braking control assembly 20 further includes a brake cable 26 for driving the rotating member 21 to rotate. Exemplarily, the brake cable 26 is located outside the housing 40 and connected to the rocker arm 22. By pulling the brake cable 26, the rotating member 21 is driven to rotate, causing the shoe block assembly 30 to expand outward, thereby achieving braking and preventing jamming during braking.

[0070] This application also provides a braking device, including the aforementioned braking device and a vehicle lock. The vehicle lock can be a smart lock controlled by a motor, used for hub braking. Using the aforementioned braking device on shared bicycles or shared electric bicycles can reduce maintenance costs.

[0071] This application also provides a bicycle, including a bicycle body and the aforementioned braking device, wherein the braking device is mounted on the bicycle body. Bicycles using the aforementioned braking device can reduce the number of times the shoe assembly needs maintenance, thereby reducing maintenance costs.

[0072] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A braking device, characterized in that, The device includes a brake control assembly and a shoe block assembly. The brake control assembly is used to abut one end of the shoe block assembly. The brake device also includes a brake fine-tuning assembly, which includes a ratchet member and an adjustment assembly. The brake control assembly is used to drive the ratchet member to move when the shoe block assembly is worn. The adjustment assembly is used to move under the drive of the ratchet member to drive the other end of the shoe block assembly to move. The adjustment assembly includes an adjustment member with a first curved surface of variable diameter. The other end of the shoe block assembly abuts against the first curved surface. When the brake control assembly moves within a first movement range, the brake control assembly reciprocates between an initial position and a braking position to drive the shoe block assembly to move in the braking direction for braking. When the shoe block assembly wears down, and the brake control assembly moves to the second movement range, the adjusting member rotates under the drive of the ratchet member, so that the other end of the shoe block assembly contacts different positions of the first curved surface, thereby adjusting the initial position of the shoe block assembly when braking.

2. The braking device according to claim 1, characterized in that, The brake fine-tuning assembly also includes a pawl, which includes an escapement and an extension connected to one end of the escapement. The escapement engages with the ratchet. The brake actuation assembly is used to abut the extension when the shoe assembly wears, causing the escapement to release the ratchet, thereby rotating the ratchet and changing the engagement position of the escapement on the ratchet.

3. The braking device according to claim 2, characterized in that, The ratchet assembly includes a ratchet portion and a gear portion connected to each other, the pawl portion engages with the ratchet portion, and the shoe assembly is used to rotate under the drive of the gear portion.

4. The braking device according to claim 2, characterized in that, The brake fine-tuning assembly also includes an external component connected to the adjustment assembly. The external component engages with the ratchet component and is used to rotate under the drive of the ratchet component to drive the adjustment assembly to move.

5. The braking device according to claim 2, characterized in that, The adjusting component includes a fixing member having a limiting groove, one end of the shoe block assembly being adjustablely inserted into one end of the limiting groove; the adjusting member is rotatably mounted in the limiting groove.

6. The braking device according to claim 5, characterized in that, The shoe block assembly includes a brake shoe and a connector connected to one end of the brake shoe. One end of the connector extends into the limiting groove in an adjustable position. The connector is used to contact different positions of the first curved surface when the adjusting member rotates, so as to adjust the initial position of the shoe block assembly when braking.

7. The braking device according to claim 2, characterized in that, The brake fine-tuning assembly also includes a positioning element, on which the ratchet element is rotatably mounted.

8. The braking device according to claim 2, characterized in that, The brake fine-tuning assembly also includes a first elastic element that drives the ratchet component to rotate.

9. A braking device, characterized in that, Includes the braking device and vehicle lock as described in any one of claims 1 to 8.

Images