Brake device, braking device and bicycle

Abstract

The invention provides a brake device, a brake device and a bicycle, the brake device comprises a brake control assembly, a brake fine adjustment assembly and a shoe block assembly, the brake fine adjustment assembly comprises a ratchet wheel part and a pawl part, and the pawl part is clamped on the ratchet wheel part; the brake control assembly has a first moving range and a second moving range; when the brake control assembly moves in the first moving range, the brake control assembly drives the shoe block assembly to brake; when the brake control assembly moves to a second moving range due to abrasion of the shoe block assembly, the brake control assembly drives the ratchet part to move, and the clamping position of the pawl part on the ratchet part is changed; the ratchet wheel part is used for driving the shoe block assembly to move so as to adjust the initial position of the shoe block assembly during braking, and therefore a good braking effect can be achieved when the shoe block assembly is abraded.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle braking, and in particular to a braking device, a braking device and a bicycle. Background Art

[0002] The brake device is used to brake the wheels of the vehicle. The brake device generally includes a shoe assembly and a brake operating assembly. When braking is required, the brake operating assembly drives the shoe assembly to move so that the shoe assembly and the wheel assembly fit and rub against each other, thereby braking the wheel assembly. After the brake device has been used for a period of time, the shoe assembly will produce a certain amount of wear, and the shoe assembly needs a larger movement stroke to fit with the wheel assembly, or the maximum movement stroke of the shoe assembly cannot fit with the wheel assembly, resulting in poor braking effect of the shoe assembly when braking. Summary of the invention

[0003] The object of the present invention is to provide a brake device, a brake device and a bicycle, aiming to solve the problem in the prior art that the braking effect is poor after the shoe assembly is worn.

[0004] In the first aspect, the present application provides a braking device, including a brake operating assembly, a brake fine-tuning assembly and a shoe assembly, the brake fine-tuning assembly including a ratchet member and a pawl member, the pawl member being engaged with the ratchet member; the brake operating assembly has a first moving range and a second moving range; when the brake operating assembly moves within the first moving range, the brake operating assembly drives the shoe assembly to brake; when the shoe assembly wears and causes the brake operating assembly to move to the second moving range, the brake operating assembly drives the ratchet member to move, and the engaging position of the pawl member on the ratchet member changes; the ratchet member is used to drive the shoe assembly to move so as to adjust the initial position of the shoe assembly when braking.

[0005] In one embodiment, the pawl member includes an escapement portion and an extension portion connected to one end of the escapement portion, the escapement portion is engaged with the ratchet member, and when the brake operating assembly moves to the second moving range, the brake operating assembly contacts the extension portion, causing the escapement portion to release the ratchet member, thereby causing the ratchet member to rotate, thereby changing the engagement position of the escapement portion on the ratchet member.

[0006] In one embodiment, the brake fine-tuning assembly further includes a first elastic member for driving the ratchet member to rotate.

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

[0008] In one embodiment, the ratchet member includes a first ratchet, and the pawl member is engaged with the first ratchet. When the brake operating assembly moves to the second moving range, the brake operating assembly contacts the first ratchet to drive the first ratchet to rotate, so that the engagement position of the pawl member on the first ratchet changes.

[0009] In one embodiment, the ratchet member includes a second ratchet, and the pawl member is engaged on the second ratchet. When the brake operating assembly moves to the second moving range, it abuts against the second ratchet, and when leaving the second moving range, it drives the second ratchet to rotate, so that the engaging position of the pawl member on the second ratchet changes.

[0010] In one embodiment, the brake operating assembly includes a brake member and a second pawl connected to one end of the brake member, and when the brake operating assembly leaves the second moving range, the second pawl drives the second ratchet wheel to rotate.

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

[0012] In one embodiment, the brake fine-tuning assembly further includes an adjusting assembly, wherein the adjusting assembly and the brake operating assembly are respectively located at two ends of the shoe assembly, and the adjusting assembly is used to move under the drive of the ratchet member to drive the shoe assembly to move.

[0013] In one embodiment, the brake fine-tuning assembly further comprises an external component connected to the adjusting assembly, wherein the external component is engaged with the ratchet component and is configured to rotate under the drive of the ratchet component to drive the adjusting assembly to move.

[0014] In one embodiment, the adjusting component includes a fixing member and an adjusting member, the fixing member has a limiting groove, and one end of the shoe assembly can be adjusted to extend into one end of the limiting groove; the adjusting member is rotatably installed in the limiting groove, and the adjusting member 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 assembly contacts different positions of the first curved surface to adjust the initial position of the shoe assembly when braking.

[0015] In one embodiment, two side surfaces of the limiting groove are used to limit one end of the shoe assembly in a first direction when the shoe assembly is braking.

[0016] In one embodiment, the adjustment assembly further comprises a cover plate mounted on the fixing member, and the cover plate and the bottom surface of the limiting groove are used to limit one end of the shoe assembly in the second direction.

[0017] In one embodiment, the shoe assembly includes a brake shoe and a connecting piece connected to one end of the brake shoe, one end of the connecting piece is adjustably positioned to extend into the limiting groove, and the connecting piece is used to contact different positions of the first curved surface when the adjusting piece rotates to adjust the initial position of the shoe assembly during braking.

[0018] In a second aspect, the present application provides a braking device, comprising the braking device and a vehicle lock as described in the first aspect above.

[0019] In a third aspect, the present application provides a bicycle, comprising a bicycle body and the brake device as described in the second aspect above, wherein the brake device is mounted on the bicycle body.

[0020] The brake device provided by the present invention has the following beneficial effects: by providing a pawl member and a ratchet member, the pawl member is engaged with the ratchet member, and the brake operating assembly drives the shoe assembly to brake when it moves in the first moving range. When the shoe assembly is worn and causes the brake operating assembly to move to the second moving range during braking, the brake operating assembly drives the ratchet member to rotate, and the engaging position of the pawl member on the ratchet member changes, thereby causing the ratchet member to rotate by a certain angle. The ratchet member drives the shoe assembly to move, thereby changing the position of the shoe assembly, that is, adjusting the initial position of the shoe assembly during braking to compensate for the wear of the shoe assembly. After the shoe assembly is worn, the distance between the shoe assembly and the wheel increases, and the distance between the shoe assembly and the wheel after the position is adjusted decreases, that is, the distance between the shoe assembly and the wheel after the position is adjusted is restored to the distance before wear. When the brake operating assembly drives the shoe assembly to brake again, the movement stroke of the brake operating assembly is consistent with the movement stroke when it is not worn, thereby achieving braking, thereby achieving a good braking effect when the shoe assembly is worn. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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.

[0022] Figure 1 A schematic diagram of a brake device provided by an embodiment of the present invention; Figure 2 A working principle diagram of a brake device provided in one embodiment of the present invention; Figure 3 A working principle diagram of a brake device provided in one embodiment of the present invention; Figure 4 A schematic diagram of a ratchet member and a pawl member of a brake device provided in one embodiment of the present invention; Figure 5 A schematic diagram of the rotation of an adjusting member of a brake device provided by an embodiment of the present invention; Figure 6A schematic diagram of the cooperation between the ratchet wheel member and the pawl member of a brake device provided in one embodiment of the present invention; Figure 7 A schematic diagram of a ratchet member of a brake device provided by an embodiment of the present invention; Figure 8 A schematic diagram of a fixing member of a brake device provided in one embodiment of the present invention; Fig. 9 A schematic diagram of the installation of a fixing member and an external member of a brake device provided in one embodiment of the present invention; Fig.10 A schematic diagram of the installation of a fixing member and an adjusting member of a brake device provided in one embodiment of the present invention; Fig.11 A schematic diagram of a fixing member of a brake device provided by an embodiment of the present invention from another perspective; Fig.12 A schematic diagram of a brake device provided in another embodiment of the present invention; Fig.13 A schematic diagram of a brake device provided in another embodiment of the present invention; Fig.14 for Fig.13 The working principle diagram of the brake device shown; Fig.15 A schematic diagram of a brake device provided in another embodiment of the present invention; Fig.16 for Fig.15 The working principle diagram of the brake device shown; Fig.17 A schematic diagram of a brake device provided by an embodiment of the present invention from another perspective.

[0023] Among them, the reference numerals in the figure are: 10. Brake fine-tuning assembly; 11. Ratchet member; 111. Ratchet portion; 112. Gear portion; 113. First ratchet; 114. Second ratchet; 12. Ratchet pawl member; 121. Escapement portion; 1211. Escapement portion body; 1212. Pallet fork; 122. Extension portion; 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 operating assembly; 21. Rotating member; 22. Rocker arm; 23. Brake member; 24. Second ratchet pawl; 25. Second elastic member; 26. Brake line; 30. Shoe assembly; 31. Brake shoe; 32. Connector; 40. Housing. DETAILED DESCRIPTION

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] Please refer to Figures 1 to 16 Now, the brake device in the embodiment of the present invention is described.

[0030] The brake device provided in the present application can be a drum brake or a follower brake. The brake device includes a brake fine-tuning assembly 10, a brake operating assembly 20 and a shoe assembly 30; the brake fine-tuning assembly 10 includes a ratchet member 11 and a pawl member 12, and the pawl member 12 is engaged with the ratchet member 11; the brake operating assembly 20 has a first movement range and a second movement range; when the brake operating assembly 20 moves within the first movement range, the brake operating assembly 20 drives the shoe assembly 30 to brake. When the shoe assembly 30 wears and causes the brake operating assembly 20 to move to the second movement range, the brake operating assembly 20 drives the ratchet member 11 to move, and the engagement position of the pawl member 12 on the ratchet member 11 changes, and the ratchet member 11 is used to drive the shoe assembly 30 to move to adjust the initial position of the shoe assembly 30 when braking.

[0031] Specifically, the movement of the brake operating assembly 20 within the first moving range refers to the reciprocating movement of the brake operating assembly 20 between the initial position and the braking position. When the brake operating assembly 20 moves from the initial position to the braking position, the brake operating assembly 20 drives the two shoe assemblies 30 to expand outward, so that both shoe assemblies 30 move from the initial position to the position in contact with the wheel, thereby braking the wheel. When the brake operating assembly 20 moves within the first moving range, the brake operating assembly 20 will not contact the ratchet member 11 or the pawl member 12. When the shoe assembly 30 is worn, the gap between the shoe assembly 30 and the wheel increases. When the brake operating assembly 20 moves to the braking position, the shoe assembly 30 cannot be in contact with the wheel, that is, there is a gap between the shoe assembly 30 and the wheel, so that the brake operating assembly 20 can continue to move outside the first moving range, that is, the brake operating assembly 20 moves to the second moving range. When the brake operating assembly 20 moves to the second moving range, the brake operating assembly 20 contacts the ratchet member 11 or the pawl member 12 to drive the ratchet member 11 to move. When the brake operating assembly 20 leaves the second moving range, the ratchet member 11 stops rotating under the action of the pawl member 12, so that the engaging position of the pawl member 12 on the ratchet member 11 changes. When the ratchet member 11 moves, the shoe assembly 30 is driven to move. When the ratchet member 11 stops moving, the shoe assembly 30 also stops moving, so that the positions of the two shoe assemblies 30 change to compensate for the wear of the shoe assembly 30, that is, the initial position of the shoe assembly 30 when braking changes. When braking again, the shoe assembly 30 starts to move from the new initial position, and the brake operating assembly 20 maintains the movement stroke before the shoe assembly 30 wears, so as to drive the shoe assembly 30 to move to the braking position that fits the wheel, thereby achieving braking. Therefore, the initial position of the shoe assembly 30 can be adaptively adjusted when the shoe assembly 30 wears, so as to achieve a better braking effect.

[0032] In one embodiment, the brake operating assembly 20 includes a rotating member 21 and a rocker arm 22. When braking is required, the user squeezes the brake to drive the rocker arm 22 to rotate, and the rocker arm 22 drives the rotating member 21 to rotate. Alternatively, when braking is required, the user squeezes the brake to drive the rotating member 21 to rotate, thereby braking, and the rotating member 21 drives the rocker arm 22 to rotate. The rotating member 21 is in conflict with the shoe assembly 30, and the rotating member 21 has a curved surface with a variable diameter. The rotation of the rotating member 21 changes the contact position between the shoe assembly 30 and the rotating member 21, thereby increasing the distance between the shoe assemblies 30, so that the shoe assembly 30 can be pushed to expand to the outside, thereby braking the wheel.

[0033] It can be understood that the brake device includes two shoe assemblies 30, which can be connected or not connected. During the rotation of the rotating member 21, one of the shoe assemblies 30 can be driven to expand outward, or both shoe assemblies 30 can be driven to expand outward at the same time.

[0034] When the shoe assembly 30 is not worn, during the braking process, the rocker arm 22 swings back and forth and does not contact the pawl member 12 and the ratchet member 11. When the shoe assembly 30 is worn, the rocker arm 22 contacts the pawl member 12 and drives the ratchet member 11 to rotate by driving the pawl member 12, or, when the shoe assembly 30 is worn, the rocker arm 22 drives the ratchet member 11 to rotate.

[0035] like Figures 1 to 7As 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, and the escapement portion 121 is engaged with the ratchet member 11. The escapement portion 121 includes an escapement portion body 1211 and two pallet forks 1212 located at both ends of the escapement portion body 1211, and the extension portion 122 is extended in a direction different from the extension direction of the pallet forks 1212 at one end of the escapement portion body 1211, and the two pallet forks 1212 are both engaged with the ratchet teeth of the ratchet member 11. When the brake operating assembly 20 moves to the second moving range, the brake operating assembly 20 contacts the extension portion 122, so that the escapement portion 121 releases the ratchet member 11, thereby rotating the ratchet member 11, and further changing the engagement position of the escapement portion 121 on the ratchet member 11. Exemplarily, the ratchet member 11 has a tendency to rotate clockwise, and when the brake operating assembly 20 does not contact the extension 122, the escapement 121 is engaged with the ratchet member 11, so that the ratchet member 11 remains stationary. When the brake operating assembly 20 contacts the extension 122, the brake operating assembly 20 pushes the extension 122 to move during the movement, thereby moving the escapement 121, thereby causing the escapement 121 to release the ratchet member 11, and the ratchet member 11 rotates. Afterwards, the ratchet member 11 rotates a certain angle under the action of the two escapement forks 1212 and is reengaged 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.

[0036] By engaging the ratchet 11 with the escapement 121, the ratchet 11 can stop rotating after rotating a specified angle, so that the shoe assembly 30 moves a corresponding distance to compensate for the initial position of the shoe assembly 30, thereby improving the compensation accuracy and further improving the reliability of the brake.

[0037] In one embodiment, the brake fine-tuning assembly 10 further includes a first elastic member 14 for driving the ratchet member 11 to rotate. Exemplarily, the ratchet member 11 rotates clockwise under the action of the first elastic member 14.

[0038] In another embodiment, the ratchet member 11 may also be driven to rotate by a motor.

[0039] The ratchet wheel 11 is released by the escapement 121 and rotates, driving the adjusting assembly 13 to rotate, so as to adjust the initial positions of the two shoe assemblies 30 during braking.

[0040] In one embodiment, the ratchet member 11 includes a ratchet portion 111 and a gear portion 112 connected to each other, the pawl member 12 is engaged with the ratchet portion 111, and the shoe 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 assembly 30 to move. The ratchet portion 111 and the gear portion 112 are separately arranged, so that the elements driving the ratchet member 11 to rotate and the elements driven by the ratchet member 11 will not interfere with each other, thereby improving the stability of the brake device.

[0041] In one embodiment, the brake fine-tuning assembly 10 further includes an adjusting assembly 13, the adjusting assembly 13 and the brake operating assembly 20 are respectively located at both ends of the shoe assembly 30, and the adjusting assembly 13 is used to move under the drive of the ratchet member 11 to drive the shoe assembly 30 to move. That is, the ratchet member 11 drives the shoe assembly 30 to move through the adjusting assembly 13 located at one end of the shoe assembly 30, which can improve the stability of the brake fine-tuning assembly 10.

[0042] 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 meshes with the ratchet member 11, and is used to rotate 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, the gear portion 112 meshes with the external member 15, and the gear portion 112 rotates clockwise to drive the external member 15 to rotate counterclockwise, thereby driving the adjustment assembly 13 fixed with the external member 15 to rotate. By providing the external member 15, the position and size of the ratchet member 11 can be designed more flexibly, thereby improving the stability of the brake device.

[0043] In another embodiment, the adjusting assembly 13 is provided with a gear meshing with the ratchet member 11 , so that the adjusting assembly 13 can rotate under the drive of the ratchet member 11 .

[0044] like Figures 4 to 11 As shown, in one embodiment, the adjustment component 13 includes a fixing member 131 and an adjustment member 132, the fixing member 131 has a limiting groove 1311, and one end of the shoe assembly 30 can be adjusted to extend into one end of the limiting groove 1311; the adjustment member 132 is rotatably installed in the limiting groove 1311, and the adjustment member 132 has a first curved surface 1321 with a variable diameter; the adjustment member 132 is used to rotate under the drive of the ratchet member 11, so that the shoe assembly 30 contacts different positions of the first curved surface 1321 to adjust the initial position of the shoe assembly 30 when braking. Among them, the external member 15 can be installed on the adjustment member 132, so as to drive the adjustment member 132 to rotate. The cross section of the adjustment member 132 is an irregular shape, thereby forming a first curved surface 1321 with a variable diameter. For example, the cross section of the adjustment member 132 is formed by splicing two identical semicircles, and the diameters of the two semicircles do not overlap, thereby forming the first curved surface 1321.

[0045] Exemplarily, 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 assemblies 30 contact different positions of the first curved surface 1321. The distance between the two shoe assemblies 30 is equal to the diameter of the contact position of the first curved surface 1321. When the adjusting member 132 rotates, so that the two shoe assemblies 30 contact the position with a larger diameter of the first curved surface 1321, the distance between the two shoe assemblies 30 increases, so that the initial positions of the two shoe assemblies 30 when braking change, that is, the gap between the shoe assemblies 30 and the wheel is reduced. When braking again, under the condition that the movement stroke of the brake operating assembly 20 remains unchanged, the shoe assembly 30 can be made to fit with the wheel to generate friction and achieve braking.

[0046] It can be understood that during the rotation of the adjusting member 132 , one of the shoe assemblies 30 can be driven to move, or both shoe assemblies 30 can be driven to move in opposite directions at the same time.

[0047] In one embodiment, the two side surfaces of the limiting groove 1311 are used to limit one end of the shoe assembly 30 in the first direction when the shoe assembly 30 brakes. Since the shoe assembly 30 contacts the first curved surface 1321, the two side surfaces of the limiting groove 1311 limit the shoe assembly 30 in the first direction when the shoe assembly 30 brakes. Therefore, when the shoe assembly 30 brakes, the shoe assembly 30 will not move in the first direction and in the tangent direction perpendicular to the first curved surface 1321, but can only roll on the first curved surface 1321. Therefore, when the shoe assembly 30 brakes, the initial position of the shoe assembly 30 will not change. Therefore, after the shoe assembly 30 is worn, the stability of the shoe assembly 30 after adjusting the initial position will not be affected, which further ensures the braking effect of the shoe assembly 30. Among them, the two side surfaces of the limiting groove 1311 limit the shoe assembly 30, which means that one end of the shoe assembly 30 cannot move significantly in the first direction in the limiting groove 1311, and a certain gap can be left between one end of the shoe assembly 30 and the side surface of the limiting groove 1311, so that one end of the shoe assembly 30 can rotate in the limiting groove 1311.

[0048] like Figure 1 As shown, in one embodiment, the adjustment assembly 13 further includes a cover plate 133 mounted on the fixing member 131, and the cover plate 133 and the bottom surface of the limiting groove 1311 are used to limit the shoe assembly 30 in the second direction. The second direction is perpendicular to the first direction, and the second direction is a direction perpendicular to the cross section 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 improved.

[0049] In one embodiment, a mounting hole 1312 is provided at the bottom of the limiting groove 1311, and 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 is connected to the adjusting member 132 to drive the adjusting member 132 to rotate. By providing the 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, thereby reducing the difficulty of processing.

[0050] like Fig.12 As shown, in one embodiment, the shoe assembly 30 includes a brake shoe 31 and a connecting member 32 connected to one end of the brake shoe 31, one end of the connecting member 32 is adjustable and extends into the limiting groove 1311, and the connecting member 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 connecting member 32 when the brake shoe 31 is braked. By connecting the brake shoe 31 and the connecting member 32, and extending one end of the connecting member 32 into the limiting groove 1311, the difficulty of processing and installing the brake shoe 31 can be reduced.

[0051] In another embodiment, the brake shoe 31 and the connecting member 32 are integrally formed, thereby reducing the number of installation steps and lowering the production cost.

[0052] like Fig.13 and Fig.14 As shown, in one embodiment, the ratchet member 11 includes a first ratchet 113, and the pawl member 12 is engaged with the first ratchet 113. When the brake operating assembly 20 moves to the second moving range, the brake operating assembly 20 contacts the first ratchet 113 to drive the first ratchet 113 to rotate, so that the engaging position of the pawl member 12 on the first ratchet 113 changes. The first ratchet 113 rotates to drive the shoe assembly 30 to move the adjustment assembly 13 to adjust the initial positions of the two shoe assemblies 30 when braking. Exemplarily, when the shoe assembly 30 is worn, during the braking process, the rocker arm 22 contacts the first ratchet 113 and drives the first ratchet 113 to rotate clockwise. Afterwards, the first ratchet 113 stops rotating under the action of the pawl member 12, so that the external member 15 rotates counterclockwise by a certain angle, thereby driving the adjustment assembly 13 to rotate, so as to adjust the initial position of the shoe assembly 30 when braking.

[0053] In one embodiment, the brake operating assembly 20 includes a brake member 23 and a second pawl 24 connected to one end of the brake member 23. The brake member 23 may be a rocker arm 22, or may include a rocker arm 22 and a rotating member 21, and the rocker arm 22 and the rotating member 21 may be integrally formed. When the brake operating assembly 20 moves to the second moving range, the second pawl 24 drives the first ratchet 113 to rotate. Specifically, a second elastic member 25 driving the second pawl 24 to rotate is mounted on the brake member 23. When the brake operating assembly 20 moves to the second moving range, the second pawl 24 drives the first ratchet 113 to rotate and puts the second elastic member 25 in a compressed state. When the brake operating assembly 20 leaves the second moving range, the second elastic member 25 returns to the initial state from the compressed state, thereby avoiding collision with the first ratchet 113 when the first ratchet 113 rotates. When the first ratchet 113 rotates, the pawl member 12 re-engages on the first ratchet 113, stopping the first ratchet 113 from rotating, so that the first ratchet 113 can drive the adjusting assembly 13 to rotate a specified angle, thereby compensating the position of the shoe assembly 30 for a corresponding distance, thereby improving the compensation accuracy and further improving the reliability of the brake.

[0054] like Fig.15 and Fig.16 As shown, in one embodiment, the ratchet member 11 includes a second ratchet 114, the pawl member 12 is engaged with the second ratchet 114, and the brake operating assembly 20 contacts the second ratchet 114 when it moves to the second moving range, and drives the second ratchet 114 to rotate when it leaves the second moving range, so that the engaging position of the pawl member 12 on the second ratchet 114 changes. Exemplarily, when the shoe assembly 30 is worn, during the braking process, the brake operating assembly 20 moves to the second moving range, and the rocker arm 22 contacts the second ratchet 114. When the brake operating assembly 20 returns to the initial position from the second moving range, the rocker arm 22 drives the second ratchet 114 to rotate counterclockwise. Afterwards, the second ratchet 114 stops rotating under the action of the pawl member 12, so that the external member 15 rotates clockwise a certain distance, and then drives the adjustment assembly 13 to rotate a certain angle, so as to adjust the initial position of the shoe assembly 30 when braking.

[0055] In one embodiment, the brake operating assembly 20 includes a brake member 23 and a second pawl 24 connected to one end of the brake member 23. The brake member 23 may be a rocker arm 22, or may include the rocker arm 22 and the rotating member 21, and the rocker arm 22 and the rotating member 21 may be integrally formed. When the brake operating assembly 20 moves to the second moving range, the second pawl 24 engages with the second ratchet 114, and when the brake operating assembly 20 leaves the second moving range, the second pawl 24 drives the second ratchet 114 to rotate. Specifically, a second elastic member 25 for driving the second pawl 24 to rotate is installed on the brake member 23, and when the brake operating assembly 20 moves to the second moving range, the second pawl 24 abuts against the second ratchet 114, and the second elastic member 25 is in a compressed state. When the brake operating assembly 20 leaves the second moving range, the second elastic member 25 returns to the initial state from the compressed state, thereby engaging with the second ratchet 114 to drive the second ratchet 114 to rotate. When the second ratchet 114 rotates, the pawl member 12 re-engages on the second ratchet 114 to stop the second ratchet 114 from rotating, so that the second ratchet 114 can drive the adjustment assembly 13 to rotate a specified angle, thereby compensating the position of the shoe assembly 30 for a corresponding distance, thereby improving the compensation accuracy and further improving the reliability of the brake.

[0056] like Figure 1 As shown, in one embodiment, the brake device further includes a positioning member 16, which can be located between two shoe assemblies 30, and the ratchet member 11 is rotatably mounted on the positioning member 16, thereby saving installation space. In one embodiment, the brake device further includes a housing 40, and the brake fine-tuning assembly 10, the brake operating assembly 20, the ratchet member 11, the pawl member 12 and the shoe assembly 30 are all located in the housing 40, and the positioning member 16 is fixedly mounted on the housing 40, so that the housing 40 can protect the internal components and improve the reliability of the brake device.

[0057] like Fig.17 As shown, in one embodiment, the brake operating assembly 20 further includes a brake wire 26 for driving the rotating member 21 to rotate. For example, the brake wire 26 is located outside the housing 40 and is connected to the rocker arm 22. By pulling the brake wire 26 to drive the rotating member 21 to rotate, the shoe assembly 30 is expanded outward to achieve braking, thereby preventing jamming during braking.

[0058] The present application also provides a braking device, including the above-mentioned braking device and a bicycle lock. The bicycle lock can be a smart lock controlled by a motor, which is used to brake the wheel hub. The above-mentioned braking device is used on a shared bicycle or a shared electric bicycle to reduce maintenance costs.

[0059] The present application also provides a bicycle, comprising a bicycle body and the above-mentioned brake device, wherein the brake device is mounted on the bicycle body. A bicycle using the above-mentioned brake device can reduce the maintenance frequency of the shoe assembly, thereby reducing the maintenance cost.

[0060] 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 braking device, It is characterized in that The invention comprises a brake operating assembly, a brake fine-tuning assembly and a shoe assembly, wherein the brake fine-tuning assembly comprises a ratchet member and a pawl member, wherein the pawl member is engaged with the ratchet member; the brake operating assembly has a first moving range and a second moving range; when the brake operating assembly moves within the first moving range, the brake operating assembly drives the shoe assembly to brake; When the shoe assembly is worn and causes the brake operating assembly to move to the second moving range, the brake operating assembly drives the ratchet member to move, and the engaging position of the pawl member on the ratchet member changes; The ratchet wheel is used to drive the shoe assembly to move so as to adjust the initial position of the shoe assembly during braking.

2. The brake device according to claim 1, It is characterized in that The pawl member includes an escapement portion and an extension portion connected to one end of the escapement portion, the escapement portion is engaged with the ratchet member, and when the brake operating assembly moves to the second moving range, the brake operating assembly abuts against the extension portion, causing the escapement portion to release the ratchet member, thereby causing the ratchet member to rotate, thereby changing the engagement position of the escapement portion on the ratchet member.

3. The brake device according to claim 2, It is characterized in that The brake fine-tuning assembly further comprises a first elastic member for driving the ratchet member to rotate.

4. The brake device according to claim 1, It is characterized in that The ratchet wheel component comprises a ratchet part and a gear part which are connected to each other, the pawl component is engaged with the ratchet wheel part, and the shoe assembly is used for rotating under the driving of the gear part.

5. The brake device according to claim 1, It is characterized in that The ratchet member includes a first ratchet, and the pawl member is engaged with the first ratchet. When the brake operating assembly moves to the second moving range, the brake operating assembly contacts the first ratchet to drive the first ratchet to rotate, so that the engagement position of the pawl member on the first ratchet changes.

6. The brake device according to claim 1, It is characterized in that The ratchet member includes a second ratchet, and the pawl member is engaged with the second ratchet. When the brake operating assembly moves to the second moving range, it abuts against the second ratchet, and when leaving the second moving range, it drives the second ratchet to rotate, so that the engaging position of the pawl member on the second ratchet changes.

7. The brake device according to claim 6, It is characterized in that The brake operating assembly includes a brake member and a second pawl connected to one end of the brake member. When the brake operating assembly leaves the second moving range, the second pawl drives the second ratchet wheel to rotate.

8. The brake device according to any one of claims 1 to 7, It is characterized in that The brake fine-tuning assembly also includes a positioning member, and the ratchet member is rotatably mounted on the positioning member.

9. The brake device according to any one of claims 1 to 7, It is characterized in that The brake fine-tuning assembly also includes an adjusting assembly. The adjusting assembly and the brake operating assembly are respectively located at two ends of the shoe assembly. The adjusting assembly is used to move under the drive of the ratchet member to drive the shoe assembly to move.

10. The brake device according to claim 9, It is characterized in that The brake fine-tuning assembly also includes an external component connected to the adjusting assembly, and the external component is engaged with the ratchet component and is used to rotate under the drive of the ratchet component to drive the adjusting assembly to move.

11. The brake device according to claim 9, It is characterized in that The adjusting component includes a fixing part and an adjusting part, the fixing part has a limiting groove, and one end of the shoe assembly can be adjusted to extend into one end of the limiting groove; the adjusting part is rotatably installed in the limiting groove, and the adjusting part has a first curved surface with a variable diameter; the adjusting part is used to rotate under the drive of the ratchet part, so that the shoe assembly contacts different positions of the first curved surface to adjust the initial position of the shoe assembly when braking.

12. The brake device according to claim 11, It is characterized in that The two side surfaces of the limiting groove are used to limit one end of the shoe assembly in a first direction when the shoe assembly is braking.

13. The brake device according to claim 11, It is characterized in that The adjustment assembly further comprises a cover plate mounted on the fixing member, and the cover plate and the bottom surface of the limiting groove are used to limit one end of the shoe assembly in the second direction.

14. The brake device according to claim 11, It is characterized in that The shoe assembly includes a brake shoe and a connecting piece connected to one end of the brake shoe, one end of the connecting piece is adjustably positioned and extends into the limiting groove, and the connecting piece is used to contact different positions of the first curved surface when the adjusting piece rotates to adjust the initial position of the shoe assembly when braking.

15. A braking device, It is characterized in that It comprises a brake device and a vehicle lock as described in any one of claims 1 to 14.

16. A bicycle, It is characterized in that The invention comprises a bicycle body and the brake device according to claim 15 , wherein the brake device is mounted on the bicycle body.

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