Centrifugal clutch capable of discharging dust
By setting seals and dust discharge channels in the centrifugal clutch, the problem of dust or debris cannot be discharged after friction plate wears, extending the service life of the bearing and ensuring the normal operation of the centrifugal clutch.
Patent Information
- Application Number
- CN202422233949.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-09-12
AI Technical Summary
In existing centrifugal clutches, dust or debris generated after the friction plate wear cannot be discharged in time, resulting in rapid wear of the bearing and reducing its service life.
Set up seals and dust removal channels in the centrifugal clutch. The seals prevent dust or debris from entering the bearing. The dust removal channel discharges dust or debris in time through centrifugal force to keep the cavity of the centrifugal clutch clean.
Effectively avoid dust or debris contacting the bearing, extend the service life of the bearing, and ensure smooth operation of the centrifugal clutch.
Smart Images
Figure CN223241933U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of clutches, in particular to a centrifugal clutch capable of removing dust. Background Art
[0002] A centrifugal clutch is a clutch in which the centrifugal blocks automatically separate or engage under the action of centrifugal force when the driving shaft reaches a certain speed. After a long period of friction between the friction plate on the centrifugal block and the drum wheel (pulley), the friction plate will wear out, generating dust or debris. Currently, the dust or debris generated by the wear of the friction plate will remain inside the clutch and cannot be discharged in time. In this way, the dust or debris will enter the bearings at both ends of the centrifugal block, causing rapid wear of the bearings and reducing the service life of the bearings. Although bearings with dust covers can be used, the effect is poor and the service life of the bearings is not significantly improved. Therefore, it is necessary to provide a centrifugal clutch solution to solve the problem of dust or debris reducing the service life of the bearings. Summary of the Invention
[0003] The purpose of the present utility model is to provide a centrifugal clutch capable of removing dust in order to solve the above problems.
[0004] The utility model achieves the above-mentioned purpose through the following technical solutions:
[0005] The cam is secured to the upper edge of the gear train and is secured to a location where the cam is located, the cam being secured to the lower edge of the gear train and being adapted to move the cam forwardly and downwardly through the gear train.
[0006] Preferably, the sealing member is an oil seal or a sealing ring.
[0007] Preferably, there are multiple dust exhaust channels, and the multiple dust exhaust channels are distributed in a ring shape along the periphery of the pressure cover.
[0008] Preferably, the dust exhaust channel is located close to the side wall of the cavity.
[0009] Preferably, baffles are fixedly provided at both ends of the centrifugal block.
[0010] Preferably, a cover plate is fixedly provided on one end of the pulley away from the cavity.
[0011] Preferably, the number of the centrifugal blocks is 2 to 10.
[0012] Preferably, the elastic member is a spring.
[0013] The beneficial effects of the present invention are as follows: (1) the present invention sets seals near both ends of the centrifugal block, which can prevent dust or debris generated by the wear of the friction plate from contacting the bearing, thereby ensuring the service life of the bearing; (2) a dust exhaust channel is set to connect the cavity with the external environment, and dust or debris generated by the wear of the friction plate in the cavity can be discharged from the dust exhaust channel in time through centrifugal force, so that the cavity of the centrifugal clutch is kept clean, and dust or debris is not given the opportunity to contact the bearing, thereby further ensuring the service life of the bearing and ensuring the smooth operation of the centrifugal clutch. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a cross-sectional view of the overall structure of the utility model;
[0015] Figure 2 For the utility model Figure 1 The first enlarged view of part A in the middle;
[0016] Figure 3 For the utility model Figure 1 The second enlarged view of part A;
[0017] Figure 4 For the utility model Figure 1 Enlarged view of part B.
[0018] Description of reference numerals:
[0019] 1. Bushing; 2. Pulley; 3. Cavity; 4. Centrifugal block; 5. Elastic part; 6. Friction plate; 7. Bearing; 8. Gland; 9. Dust exhaust channel; 10. Seal; 11. Dust cover; 12. Baffle; 13. Cover plate; 14. Mounting slot. DETAILED DESCRIPTION
[0020] The present invention will be further described below with reference to the accompanying drawings:
[0021] like Figure 1As shown, the utility model provides a dust-exhausting centrifugal clutch, comprising a sleeve 1 and a pulley 2, wherein the pulley 2 is sleeved on the sleeve 1. A cavity 3 is provided at one end of the pulley 2. A centrifugal block 4 is provided in the cavity 3, and there are multiple centrifugal blocks 4 distributed around the sleeve 1. The multiple centrifugal blocks 4 are connected by an elastic member 5, and the elastic member 5 can be a spring. The function of the elastic member 5 is that when the sleeve 1 rotates at high speed, the centrifugal force becomes larger and larger, causing the multiple centrifugal blocks 4 to move outward until they rub against the inner wall of the cavity 3 of the pulley 2, and the two are fixedly connected, so that the sleeve 1 drives the pulley 2 to rotate synchronously; when the rotation speed of the sleeve 1 slows down, the elastic member 5 helps the multiple centrifugal blocks 4 return to their original positions. Friction plates 6 are fixedly provided on the outer surface of the multiple centrifugal blocks 4 close to the side wall of the cavity 3. As shown Figure 1 、 Figure 2 and Figure 3 As shown, a bearing 7 is provided between the sleeve 1 and the end of the pulley 2 away from the cavity 3; a pressure cover 8 is fixedly provided at the end of the pulley 2 close to the cavity 3, and a bearing 7 is provided between the pressure cover 8 and the sleeve 1. The bearing 7 can be a bearing 7 with a dust cover 11. A mounting groove 14 is provided at the end of the pressure cover 8 close to the centrifugal block 4, and a mounting groove 14 is provided at the end of the pulley 2 close to the centrifugal block 4. Seals 10 are provided in both mounting grooves 14. The mounting grooves 14 are located in the gap between the sleeve 1 and the pressure cover 8, and between the sleeve 1 and the pulley 2. The seals 10 in the mounting grooves 14 can prevent dust or debris generated after the friction plate 6 is worn from contacting the bearing 7 through the gap, avoiding rapid wear of the bearing 7 due to contact with dust or debris, and ensuring the service life of the bearing 7. The seal 10 can be an oil seal or a sealing ring. In this embodiment, the seal 10 is an oil seal. As Figure 1 and Figure 4 As shown, a dust exhaust channel 9 is provided between the pressure cover 8 and the pulley 2, and the dust exhaust channel 9 connects the cavity 3 with the external environment. In this way, the dust or debris generated by the wear of the friction plate 6 in the cavity 3 can be discharged from the dust exhaust channel 9 in time through centrifugal force, so that the cavity 3 of the centrifugal clutch is kept clean, the service life of the bearing 7 is guaranteed, and the smooth operation of the centrifugal clutch is guaranteed. There are multiple dust exhaust channels 9, and the multiple dust exhaust channels 9 are distributed in a ring shape along the outer periphery of the pressure cover 8. The dust exhaust channel 9 is close to the side wall of the cavity 3, which facilitates the discharge of dust or debris in the cavity 3. Baffles 12 are fixedly provided at both ends of the centrifugal block 4. A cover plate 13 is fixedly installed on the end of the pulley 2 away from the cavity 3 by screws. The cover plate 13 has the function of preventing impurities in the external environment from entering the interior of the centrifugal clutch.
[0022] On the basis of the above embodiment, further, the number of the centrifugal blocks 4 is 2 to 10. For example, the number of the centrifugal blocks 4 can be 2, 3, or 4. In this embodiment, the number of the centrifugal blocks 4 is 2.
[0023] like Figure 1 As shown, during installation, the sleeve 1 is fixedly mounted on the output shaft of the driving member (such as a motor), and the pulley 2 is connected to the driven pulley through a belt. During operation, the driving member drives the sleeve 1 to rotate at high speed, and the centrifugal force becomes larger and larger, causing the multiple centrifugal blocks 4 to move outward until they fit against the inner wall of the cavity 3 of the pulley 2 and rub against it. The two are fixedly connected, so that the sleeve 1 drives the pulley 2 to rotate synchronously, and the pulley 2 drives the driven pulley to rotate; when the driving member stops working, the rotation speed of the sleeve 1 slowly decreases, and the elastic member 5 helps the multiple centrifugal blocks 4 return to their original position, and the multiple centrifugal blocks 4 are disengaged from the inner wall of the cavity 3 of the pulley 2, thereby interrupting the power transmission. As shown Figure 1 and Figure 3 As shown, during operation, the friction plate 6 on the centrifugal block 4 rubs against the inner wall of the cavity 3 of the pulley 2 for a long time, which may cause the friction plate 6 to wear and generate dust or debris. At this time, the seal 10 in the mounting groove 14 can prevent the dust or debris from contacting the bearing 7, thereby avoiding rapid wear of the bearing 7 and ensuring the service life of the bearing 7. Figure 1 and Figure 4 As shown, at the same time, dust or debris in the cavity 3 can be discharged from the dust exhaust channel 9 in time through centrifugal force, so that the cavity 3 of the centrifugal clutch remains clean, ensuring the service life of the bearing 7 and the smooth operation of the centrifugal clutch.
[0024] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and purpose of the present invention, all of which are intended to fall within the scope of protection of the present invention. The scope of protection of the present invention is defined by the claims and their equivalents.
Claims
1. A dust-removing centrifugal clutch, comprising a sleeve and a pulley, wherein the pulley is sleeved on the sleeve, a cavity is provided at one end of the pulley, a centrifugal block is provided in the cavity, a plurality of the centrifugal blocks are distributed around the sleeve, the plurality of the centrifugal blocks are connected by elastic members, friction plates are fixedly provided on the outer surfaces of the plurality of the centrifugal blocks close to the side walls of the cavity, a bearing is provided between the sleeve and the end of the pulley away from the cavity, a gland is fixedly provided on the end of the pulley close to the cavity, a bearing is provided between the gland and the sleeve, and the characteristics are: The pressure cover is provided with a mounting groove at one end close to the centrifugal block, and the pulley is provided with a mounting groove at one end close to the centrifugal block. Seals are provided in both mounting grooves, and a dust exhaust channel is provided between the pressure cover and the pulley, and the dust exhaust channel connects the cavity with the external environment.
2. A centrifugal clutch capable of removing dust according to claim 1, characterized in that: The sealing element is an oil seal or a sealing ring.
3. The centrifugal clutch capable of dust removal according to claim 1, characterized in that: There are multiple dust exhaust channels, and the multiple dust exhaust channels are distributed in a ring shape along the periphery of the pressure cover.
4. A centrifugal clutch capable of removing dust according to claim 3, characterized in that: The dust exhaust channel is located close to the side wall of the cavity.
5. The centrifugal clutch capable of dust removal according to claim 1, characterized in that: Baffles are fixedly arranged at both ends of the centrifugal block.
6. The centrifugal clutch capable of dust removal according to claim 1, characterized in that: A cover plate is fixedly provided on one end of the pulley away from the cavity.
7. The centrifugal clutch capable of dust removal according to claim 1, characterized in that: The number of the centrifugal blocks is 2 to 10.
8. The centrifugal clutch capable of dust removal according to claim 1, characterized in that: The elastic member is a spring.