A clutching disc brake device

Abstract

The utility model relates to the technical field technical field of brake technology discloses a clutch pressure disc type brake device, including the wheel, the axle of setting in the wheel center position and the brake disc assembly of setting on the axle of wheel one side rotatable with the wheel, brake disc assembly is by fixed disc and movable disc is composed, fixed disc is fixedly connected with the wheel, one side of movable disc still has clutch mechanism and swing arm with coaxial, and movable disc is configured as the state of enforcement rotates with fixed disc and wheel together, brake state, and swing arm drives clutch mechanism axial in -migrate and presses movable disc clamping and restricts fixed disc rotation. Solveed the problem that the existing brake device uses friction material and is easy to wear, service life is short, and the powder dust produced after wearing influences human health and surrounding environment etc.

Description

Technical Field

[0001] This utility model relates to the field of brake technology, specifically to a clutch pressure disc brake device. Background Technology

[0002] Bicycles and electric bicycles, with their low price, maneuverability, and simple driving techniques, have become increasingly popular as a means of transportation. The braking system, as an indispensable safety component of bicycles and electric bicycles, is directly related to people's safety in terms of its reliability and sensitivity.

[0003] Currently, commonly used braking devices on bicycles or electric bicycles include: brake-on-grip structures, such as the novel brake-on-grip structure disclosed in CN212447937U, which mainly uses a brake band with friction material around the outside of the brake disc. The brake band and friction material grip each other on the outside of the brake disc to generate friction, thereby braking the vehicle; and drum brake structures, such as an improved drum brake disclosed in CN216715038U, which mainly uses a rocker arm to rotate, driving a camshaft to rotate, which in turn drives the brake shoes with friction material to open and press against the brake drum, stopping the wheel from rotating.

[0004] The aforementioned braking device uses friction materials during braking. To improve braking performance, some harmful substances are added to the friction materials. During continuous braking, the friction materials are prone to wear and have a short service life, requiring regular replacement of brake pads or maintenance of brake blocks, causing considerable inconvenience to consumers. Furthermore, the worn friction materials produce dust and powder, which can affect human health and the surrounding environment. To address these shortcomings of the aforementioned friction materials, CN207496869U discloses a bicycle grip brake roller brake device, a frictionless braking device. However, this device has a complex structure, is inconvenient to assemble, and has a low cost-performance ratio, hindering its widespread application.

[0005] To fundamentally overcome the easy wear of friction materials in braking devices and eliminate the impact of wear on human health and the environment has always been a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a clutch pressure disc brake device, which overcomes the problems of easy wear of friction materials, short service life, and the impact of dust generated after wear on human health and the surrounding environment in existing brake devices.

[0007] To achieve the above objectives, this application adopts the following technical solution: This utility model is a clutch-type pressure disc brake device, including a wheel, a central axle located at the center of the wheel, and a brake disc assembly that can rotate with the wheel and is located on the central axle on one side of the wheel. The brake disc assembly consists of a fixed disc and a moving disc. The fixed disc is fixedly connected to the wheel. A clutch mechanism and a rocker arm are also coaxially provided on one side of the moving disc. The moving disc is configured to rotate with the fixed disc and the wheel in the driving state. In the braking state, the rocker arm drives the clutch mechanism to move axially inward to press against the moving disc, clamp it, and restrict the rotation of the fixed disc.

[0008] Further: The wheel is provided with a fixed plate mounting seat, and a bearing seat is provided inside the fixed plate mounting seat. The bearing seat contains a bearing and a central shaft. A limiting groove is provided on the inner side of the fixed plate mounting seat. An anti-slip and wear-resistant structure is provided on the opposite surface of the fixed plate and the moving plate. The fixed plate has multiple limiting protrusions along the circumference that are adapted to be embedded in the limiting groove.

[0009] Furthermore, the plate is also provided with multiple connection holes for fixed connection with the plate mounting base.

[0010] Furthermore, the moving plate is also provided with a plurality of limiting protrusions, and a braking anti-rotation structure is provided in the cavity formed by the corresponding limiting protrusions between the fixed plate and the moving plate. The braking anti-rotation structure has an anti-rotation gap with the cavity, and the braking anti-rotation structure is a buffer spring provided in the cavity.

[0011] Furthermore, the moving disk is also provided with multiple convex reinforcing structures at intervals.

[0012] Further: The rocker arm includes: a rocker arm body and a connecting part disposed at one end of the rocker arm body, the connecting part is provided with a connecting hole, and a drive cam that protrudes outward on one side of the connecting hole is coaxially provided.

[0013] Furthermore: The clutch mechanism includes a clutch disc and an elastic structure disposed between the clutch disc and the moving disc. Rotating the rocker arm drives the clutch disc to move inward and press against the fixed disc on one side of the moving disc for braking. When the rocker arm is released, the elastic structure causes the clutch disc to reset and separate from the moving disc.

[0014] Further: The clutch disc includes: an annular body, a concave-convex abutment portion disposed on one end face of the annular body, and an axially distributed cam portion disposed on the other side of the annular body. The annular body has a flat round hole at its center position that is adapted to be connected to an off-axis portion disposed at one end of the central shaft. The concave-convex abutment portion abuts against one side of the moving disc. The cam portion is adapted to be driven by a drive cam disposed on the corresponding side of the rocker arm.

[0015] Furthermore, one side of the moving disc is also provided with a meshing part adapted to the concave-convex abutment part, and the meshing part and the concave-convex abutment part are provided with a toothed structure that is adapted to each other.

[0016] Furthermore: the elastic structure is a return spring sleeved on the central shaft, and the moving disc and the clutch disc are provided with limiting steps adapted to the return spring on their corresponding sides.

[0017] Compared with the prior art, the advantages of this utility model are: This application involves setting a rotatable central axle at the center of the wheel. On the central axle on one side of the wheel, a brake disc assembly consisting of a fixed disc and a moving disc, a clutch mechanism, and a rocker arm are sequentially mounted. The outer side of the rocker arm is fixed to the central axle with fasteners. Both ends of the central axle are fixedly mounted on the frame. The brake control cable or lever is connected to one end of the rocker arm. By setting a clutch mechanism consisting of a clutch disc and an elastic structure, the clutch disc and the rocker arm are provided with a cam part adapted for driving and a drive cam. Under normal circumstances, the drive cam and the cam part are adapted for meshing. When braking, the brake cable is tightened. The drive cam on the rocker arm rotates and misaligns relative to the cam part on the clutch disc, opening and compressing the elastic structure. Since the clutch disc and the central axle are fitted with a flat shaft hole, they cannot rotate radially but can only move axially. This causes the clutch disc to move towards the moving disc and press and reduce the gap between the moving disc and the fixed disc, increasing the friction between the two discs, thereby forcing the wheel to stop and achieving the braking effect. When braking is not required, the rocker arm, driven by the elastic structure, forces the clutch disc and the moving disc to separate, and the clutch disc and the rocker arm re-engage. By setting a limiting protrusion opposite to the fixed plate and the moving plate, a braking anti-rotation structure is set in the cavity. On the one hand, it ensures that the moving plate rotates with the moving plate, and on the other hand, it ensures that the rotation stops within a certain customized gap range, thereby improving the braking effect, reducing the overall installation requirements of the brake, and improving the installation adaptability. The braking anti-rotation structure is a buffer spring or a limiting block set in the cavity, but is not limited to these. The buffer spring setting gives the brake a certain braking buffer, ensuring the braking effect and making the braking stop more stable. This application has a simple structure, and braking is achieved entirely through the friction between the two discs. It can complete braking without the need for friction materials. Due to the integral structure of the moving disc and the fixed disc, the service life is extended to be comparable to that of the entire vehicle, ensuring that the braking device does not need to be replaced during vehicle use, thereby saving operating costs. At the same time, it will not cause environmental or human health problems due to the dust and powder scattered by the wear of friction materials. Attached Figure Description

[0018] Figure 1 This is a side view of the present invention in the driving state; Figure 2 This is an exploded schematic diagram of this utility model; Figure 3 This is a three-dimensional structural diagram of the moving disc, clutch disc, and rocker arm of this utility model; Figure 4 yes Figure 3 A schematic diagram of the three-dimensional structure on the other side; Figure 5This is a three-dimensional schematic diagram of one side of the clutch disc of this utility model; Figure 6 This is a schematic diagram of another embodiment of the present invention; Attached image labels: Wheel 10; Fixed plate mounting seat 11; Limiting groove 12; Bearing seat 13; Brake disc assembly 20; Fixed plate 21; Moving plate 22; Braking anti-rotation structure 23; Limiting protrusion 24; Pressing protrusion reinforcing structure 25; Connecting hole 26; Engaging part 27; Clutch mechanism 30; Clutch disc 31; Annular body 311; Cam part 312; Concave-convex abutment part 313; Flat round hole 314; Limiting step 315; Elastic structure 32; Central shaft 40; Rocker arm 50; Connecting part 51; Connecting hole 52; Drive cam 53; Rocker arm body 54. Detailed Implementation

[0019] To enhance understanding of this utility model, it will be further described in detail below with reference to the accompanying drawings. This embodiment is only used to explain this utility model and does not constitute a limitation on the scope of protection of this utility model.

[0020] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", 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 combination 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.

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1-5 The diagram shows a clutch-type pressure disc brake device, including a wheel 10, a central axle 40 located at the center of the wheel 10, and a brake disc assembly 20 mounted on the central axle 40 on one side of the wheel 10, which can rotate with the wheel 10. The brake disc assembly 20 consists of a fixed disc 21 and a moving disc 22. The fixed disc 21 is fixedly connected to the wheel 10. A clutch mechanism 30 and a rocker arm 50 are also coaxially provided on one side of the moving disc 22. The moving disc 22 is configured to rotate together with the fixed disc 21 and the wheel 10 in the driving state. In the braking state, the rocker arm 50 drives the clutch mechanism 30 to move axially inward to press against the moving disc 22, clamp it, and restrict the rotation of the fixed disc 21. Specifically: Wheel 10 is equipped with a fixed plate mounting seat 11, inside which is a bearing seat 13. The bearing seat 13 contains a bearing and a central axle 40. Both ends of the central axle 40 are fixed to the frame, and wheel 10 rotates around the central axle 40. The inner side of the fixed plate mounting seat 11 has a limiting groove 12. Fixed plate 21 and moving plate 22 are fitted onto the central axle 40. Fixed plate 21 has multiple limiting protrusions 24 along its circumference, which are fitted into the limiting grooves 12 and rotate with wheel 10. Moving plate 22 rotates with fixed plate 21, or it may not rotate. 2. Whether it rotates depends on the installation gap between the moving plate 22 and the fixed plate 21 or the installation fit between the moving plate 22 and the central shaft 40. If the fit between the moving plate 22 and the central shaft 40 is a flat shaft or spline fit, it will not rotate but can move axially. If it is a round hole shaft fit, it can rotate. In this case, if the axial installation gap is large, it will also rotate. The fixed plate 21 and the moving plate 22 have anti-slip and wear-resistant structures on their opposing surfaces. The fixed plate 21 and the moving plate 22 are integrally formed sheet metal structures. To improve wear resistance, wear-resistant materials or surface treatments can be used. Specifically: The clutch mechanism 30 includes a clutch disc 31 and an elastic structure 32 disposed between the clutch disc 31 and the moving disc 22. Rotating the rocker arm 50 drives the clutch disc 31 to move inward and press against the fixed disc 21 on one side of the moving disc 22 for braking. Releasing the rocker arm 50 causes the clutch disc 31 to return to its original position and separate from the moving disc 22. Preferably: the elastic structure 32 is a return spring sleeved on the central shaft 40. The clutch disc 31 includes: an annular body 311, a concave-convex abutment portion 313 disposed on one end face of the annular body 311, and an axial abutment portion 313 disposed on the other side of the annular body 311. The cam portion 312 of the cloth has a flat round hole 314 at the center of the annular body 311, which is adapted to connect with the off-axis portion 41 at one end of the central shaft 40. The flat round hole 314 and the off-axis portion 41 are configured to ensure that the clutch disc 31 cannot rotate relative to the central shaft, but can move axially. The concave and convex abutment portion 313 abuts against one side of the moving disc 22. The cam portion 312 is adapted to drive the drive cam 53 on the corresponding side of the rocker arm 50. When the rocker arm 50 rotates, the clutch disc 31 does not rotate. The drive cam 53 rotates relative to the cam portion 312, climbs up and pushes open the clutch disc 31, moves axially to the left and pushes the moving disc 22.

[0023] Specifically, the rocker arm 50 includes a rocker arm body 54 and a connecting portion 51 disposed at one end of the rocker arm body 54. The connecting portion 51 is provided with a connecting hole 52 to be fitted with the central shaft 40. A drive cam 53 with an axially protruding shape is coaxially provided on one side of the connecting hole 52. Figure 6 As shown; the drive cam 53 and the cam section 312 are axially adapted ratchet structures, such as... Figure 1-5 As shown.

[0024] A rotatable central axle 40 is provided at the center of the wheel 10. A brake disc assembly 20, consisting of a fixed disc 21 and a movable disc 22, which rotates with the wheel 10, is sequentially mounted on the central axle 40 on one side of the wheel 10. A clutch mechanism 30 and a rocker arm 50 are also mounted on the central axle 40. The outer side of the rocker arm is fixed to the central axle by fasteners. Both ends of the central axle 40 are fixedly mounted on the frame. A brake control cable or lever is connected to one end of the rocker arm 50. A clutch mechanism 30, consisting of a clutch disc 31 and an elastic structure 32, is provided. The clutch disc 31 and the rocker arm 50 are equipped with a drive cam portion 312 and a drive cam 53. Tightening the brake cable causes the rocker arm 50 to rotate around the central axle. The drive cam 53 on the rocker arm 50 drives the cam portion 312 on the clutch disc 31. The 12-displacement expansion and compression elastic structure 32 causes the clutch disc 31 to move towards the moving disc 22 and press to reduce the gap between the moving disc 22 and the fixed disc 21, increasing the friction between the two discs and thus forcing the wheel 10 to stop rotating to achieve a braking effect. To achieve a good braking effect, an anti-slip and wear-resistant structure is added between the contact surfaces of the two discs. The structure of this application is simple, and the braking is entirely based on the friction between the two discs. It can complete the braking without the use of friction materials. Due to the integral structure of the moving disc and the fixed disc, its wear-resistant service life can be extended to be comparable to that of the whole vehicle, ensuring that the vehicle does not need to be replaced during use, thereby saving operating costs. At the same time, it will not cause problems such as the dust and powder caused by the wear of friction materials, which will affect the environment and human health.

[0025] An alternative implementation, such as Figure 2 As shown: The plate 21 is also provided with multiple connection holes 26, which are fixedly connected to the plate mounting base 11 by fastening bolts, thereby ensuring that the plate 21 is more firmly and stably connected to the wheel 10 and can withstand greater braking load.

[0026] An alternative implementation, such as Figure 1-4 As shown in Figure 6: The moving disc 22 is also provided with multiple limiting protrusions 24 to increase the strength of the moving disc; the cavity formed between the fixed disc 21 and the moving disc 22 through the corresponding limiting protrusions 24 is also provided with a braking anti-rotation structure 23, and there is an anti-rotation gap between the braking anti-rotation structure 23 and the cavity; the limiting protrusions 24 arranged opposite to the fixed disc 21 and the moving disc 22 form a cavity with a braking anti-rotation structure 23, which on the one hand ensures that the moving disc 22 rotates with the moving disc 21, and on the other hand ensures that it stops rotating within a certain limit gap, thereby improving the braking effect, reducing the overall installation requirements of the brake, and improving the installation adaptability; the braking anti-rotation structure 23 is a buffer spring or a limiting block set in the cavity, but is not limited to these. The buffer spring setting gives the brake a certain braking buffer, ensuring the braking effect and making the braking stop more stable.

[0027] An alternative implementation, such as Figure 2-4 As shown in Figure 6: In order to further improve the overall strength of the moving plate, multiple convex reinforcing structures 25 are also provided at intervals on the moving plate 22.

[0028] An alternative implementation, such as Figure 1-4 As shown in Figure 6: In order to improve the braking effect and prevent the moving disc and clutch disc from sliding during braking, a meshing part 27 adapted to the concave-convex contact part 313 is also provided on one side of the moving disc 22. The meshing part 27 and the concave-convex contact part 313 are configured with mutually adapted tooth-like structures; preferably a ratchet meshing structure.

[0029] In one optional implementation, the moving plate 22 and the clutch plate 31 are provided with a limiting step 315 adapted to the return spring on the corresponding side, and the limiting step 315 is provided so that the return spring has a limiting and guiding function.

[0030] Mechanism of action: Wheel 10 is connected to fixed plate 21 by screws or other fasteners, and central shaft 40 runs through the entire braking device. Wheel 10, fixed plate 21 and moving plate 22 rotate together normally. When rocker arm 50 is rotated, clutch plate 31 moves to the left and squeezes elastic structure 32. When clutch plate 31 and moving plate 22 are engaged by matching teeth, the rotation direction of moving plate 22 generates braking and transmits torque to four buffer springs (but not limited to four). Then, the four buffer springs transmit braking force to fixed plate 21. Since fixed plate 21 is fixedly connected to wheel 10, the wheel 10 is finally braked to a stop. After the external force is removed, rocker arm 50 returns to the initial state axially driven by elastic structure 32. Elastic structure 32 can ensure that clutch plate 31 and fixed plate 22 can be effectively separated when they do not need to be pressed for braking. In actual installation, the axial clearance between fixed plate 21 and moving plate 22 should be minimized as much as possible.

[0031] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A clutching and disc brake apparatus, characterized by: The device includes a wheel (10), a central axle (40) located at the center of the wheel (10), and a brake disc assembly (20) located on the central axle (40) on one side of the wheel (10) and capable of rotating with the wheel (10). The brake disc assembly (20) consists of a fixed disc (21) and a moving disc (22). The fixed disc (21) is fixedly connected to the wheel (10). A clutch mechanism (30) and a rocker arm (50) are also coaxially provided on one side of the moving disc (22). The moving disc (22) is configured to rotate together with the fixed disc (21) and the wheel (10) in the driving state. In the braking state, the rocker arm (50) drives the clutch mechanism (30) to move axially inward to press against the moving disc (22) and clamp and restrict the rotation of the fixed disc (21).

2. The clutching and disc brake apparatus according to claim 1, characterized by: The wheel (10) is provided with a fixed plate mounting seat (11), and a bearing seat (13) is provided inside the fixed plate mounting seat (11). The bearing seat (13) is provided with a bearing and a central shaft (40). A limiting groove (12) is provided on the inner side of the fixed plate mounting seat (11). The fixed plate (21) and the moving plate (22) are provided with an anti-slip and wear-resistant structure. The fixed plate (21) is provided with multiple limiting protrusions (24) along the circumference, which are adapted to be embedded in the limiting groove (12).

3. The clutching and disc brake apparatus according to claim 2, characterized by: The fixed plate (21) is also provided with multiple connection holes (26) and fixedly connected to the fixed plate mounting base (11).

4. The clutching and disc brake apparatus according to claim 1, characterized by: The moving plate (22) is also provided with a plurality of limiting protrusions (24). The cavity formed between the fixed plate (21) and the moving plate (22) through the corresponding limiting protrusions (24) is also provided with a braking anti-rotation structure (23). The braking anti-rotation structure (23) has an anti-rotation gap with the cavity. The braking anti-rotation structure (23) is a buffer spring provided in the cavity.

5. The clutching and disc brake apparatus according to claim 4, wherein: The moving plate (22) is also provided with multiple convex reinforcing structures (25) at intervals.

6. The clutching and disc brake apparatus according to claim 1, wherein: The rocker arm (50) includes: a rocker arm body (54) and a connecting part (51) disposed at one end of the rocker arm body (54). The connecting part (51) is provided with a connecting hole (52), and a drive cam (53) with an axial outward protrusion is coaxially disposed on one side of the connecting hole (52).

7. The clutching and disc brake apparatus according to any one of claims 1 to 6, characterized by: The clutch mechanism (30) includes a clutch disc (31) and an elastic structure (32) disposed between the clutch disc (31) and the moving disc (22). Rotating the rocker arm (50) drives the clutch disc (31) to move inward and press against the fixed disc (21) on one side of the moving disc (22) for braking. When the rocker arm (50) is released, the elastic structure (32) causes the clutch disc (31) and the moving disc (22) to reset and separate.

8. The clutching and disc brake apparatus according to claim 7, wherein: The clutch disc (31) includes: an annular body (311), a concave-convex abutment portion (313) disposed on one side end face of the annular body (311), and an axially distributed cam portion (312) disposed on the other side of the annular body (311). The annular body (311) has a flat round hole (314) at the center position that is adapted to be connected to an off-axis portion (41) disposed at one end of the central shaft (40). The concave-convex abutment portion (313) abuts against one side of the moving disc (22). The cam portion (312) is adapted to be driven by a drive cam (53) disposed on the corresponding side of the rocker arm (50).

9. A clutched disc brake device according to claim 8, characterised in that: The moving disk (22) is also provided with a meshing part (27) on one side that is adapted to the concave-convex abutment part (313). The meshing part (27) and the concave-convex abutment part (313) are configured with mutually adapted tooth-like structures.

10. The clutching and disc brake apparatus according to claim 7, wherein: The elastic structure (32) is a return spring sleeved on the central shaft (40), and the moving plate (22) and the clutch plate (31) are provided with a limiting step (315) adapted to the return spring on the corresponding side.

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