Flexible connection centrifugal clutch

Abstract

The utility model provides a flexible connection centrifugal clutch which comprises an outer ring and an inner ring which are supported and positioned through a cover plate and a bearing, a plurality of flail blocks arranged between the outer ring and the inner ring, and an elastic body connected to the periphery of the inner ring. The multiple throwing blocks are connected to the periphery of the elastic body in a surrounding mode, and every two adjacent throwing blocks are connected with each other through multiple elastic pieces. Through the arrangement that the elastic body is connected to the periphery of the inner ring and the multiple elastic pieces are connected between the adjacent flail blocks arranged on the periphery of the elastic body in a surrounding mode, transmission of flexible connection is achieved, the clutch has the vibration absorption and impact resistance functions, the torsional vibration characteristic of a transmission system can be effectively adjusted, and vibration absorption and noise reduction can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of clutches, in particular to a soft-connected centrifugal clutch. Background Art

[0002] A centrifugal clutch is a mechanical device that relies on centrifugal force to automatically engage and disengage. Existing centrifugal clutches primarily transmit torque through a rigid, direct connection (steel-to-steel) between the thrower and the inner ring. This design presents significant deficiencies in applications with frequent starts and stops, or where there are frequent impact loads and severe vibration.

[0003] 1. Due to the frequent start-stop, impact, and severe vibration of the contact surface between the inner ring and the swing block, these components are very easy to wear, which greatly shortens the service life of the clutch;

[0004] 2. Wear and vibration may cause the clutch to make abnormal noise during operation. Utility Model Content

[0005] In view of this, an object of the present invention is to provide a soft-connect centrifugal clutch to solve the above-mentioned problem.

[0006] The utility model adopts the following scheme:

[0007] The present application provides a soft-connect centrifugal clutch, comprising an outer ring and an inner ring supported and positioned by a cover plate and a bearing, and a plurality of swing blocks disposed between the outer ring and the inner ring, wherein the outer peripheral walls of the swing blocks are provided with friction plates, and an elastic body connected to the outer periphery of the inner ring is further provided; the plurality of swing blocks are disposed around and connected to the outer periphery of the elastic body, and adjacent two of the swing blocks are interconnected by a plurality of elastic members;

[0008] When the inner ring reaches a certain rotation speed, the swing block overcomes the tension of the elastic member and the elastic body, moves radially outward and contacts the inner wall of the outer ring, thereby realizing connected transmission.

[0009] Furthermore, the elastic body is of an integrated type, comprising a rubber body and a fixing member embedded in the rubber body; the fixing member is used to realize the connection and fixation of the swing block and the elastic member.

[0010] Furthermore, the elastic body is integrally formed by casting the fixing piece of aviation aluminum alloy and natural rubber.

[0011] Furthermore, the fixing member includes a plurality of first fixing members and second fixing members spaced apart along the circumferential direction of the rubber body; the first fixing member is provided with a first fixing hole along the axial direction of the rubber body for connecting with the swing block; the second fixing member is provided with a second fixing hole radially along the rubber body for connecting with the inner ring.

[0012] Furthermore, the swing block includes an arc-shaped friction portion, and two fixing portions axially arranged in parallel and connected to the inner side of the friction portion; a third fixing hole adapted to the first fixing hole is provided on the fixing portion; and a plurality of the elastic parts are connected between the fixing portions of two adjacent swing blocks.

[0013] Furthermore, the elastic member is a tension spring.

[0014] Furthermore, a dust cover is provided on the outer cover plate.

[0015] By adopting the above technical solution, the utility model can achieve the following technical effects:

[0016] The utility model provides a soft-connected centrifugal clutch, which realizes soft-connected transmission through an elastomer connected to the outer periphery of an inner ring and a plurality of swing blocks arranged around the outer periphery of the elastomer, with a plurality of elastic parts connected between adjacent blocks, and the clutch has the functions of absorbing vibration and resisting impact, can effectively adjust the torsional vibration characteristics of the transmission system, and reduce shock and noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a front structural diagram of a soft-connected centrifugal clutch according to an embodiment of the present utility model;

[0019] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of AA;

[0020] Figure 3 This is a schematic diagram of the elastic structure of a soft-connect centrifugal clutch according to an embodiment of the present utility model;

[0021] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure of the middle BB;

[0022] Figure 5This is a front structural diagram of a swing block of a soft-connected centrifugal clutch according to an embodiment of the present utility model;

[0023] Figure 6 This is a side structural diagram of a swing block of a soft-connected centrifugal clutch according to an embodiment of the present utility model;

[0024] Icons: cover plate 1, bearing 2, outer ring 3, inner ring 4, swing block 5, elastic part 6, first fixing part 7, second fixing part 8, rubber body 9, friction part 10, fixing part 11, friction plate 12, dust cover 13, elastic body 14. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] Example

[0027] Combine Figures 1 to 6 As shown, this embodiment provides a soft-connect centrifugal clutch, comprising an outer ring 3 and an inner ring 4 supported and positioned by a cover plate 1 and a bearing 2, and a plurality of swing blocks 5 disposed between the outer ring 3 and the inner ring 4. The outer peripheral walls of the swing blocks 5 are provided with friction plates 12, and the swing blocks 5 also include an elastic body 14 connected to the outer periphery of the inner ring 4. The plurality of swing blocks 5 are arranged around and connected to the outer periphery of the elastic body 14, and adjacent two of the swing blocks 5 are connected to each other by a plurality of elastic members 6.

[0028] When the inner ring 4 reaches a certain rotation speed, the swing block 5 overcomes the pulling force of the elastic member 6 and the elastic body 14, moves radially outward and contacts the inner wall of the outer ring 3, thereby realizing connected transmission.

[0029] Specifically, in this embodiment, Figure 1 and Figure 2As shown, the outer ring 3 is fixed between the left and right cover plates 1 by bolts, and the inner ring 4 and the cover plates 1 are provided with positioning steps, and are supported and positioned by the bearing 2. Figure 3 and Figure 4 As shown, the elastic body 14 is an integrated structure, which includes a rubber body 9 and a fixing part embedded in the rubber body 9; the fixing part is made of aviation aluminum alloy, and the rubber body 9 is made of natural rubber. The fixing part includes a plurality of first fixing parts 7 and second fixing parts 8 arranged at intervals along the circumferential direction of the rubber body 9; the first fixing part 7 is provided with a first fixing hole along the axial direction of the rubber body 9, and is connected to the swing block 5 by bolts; the second fixing part 8 is provided with a second fixing hole radially of the rubber body 9, and is connected to the inner ring 4 by bolts. The arrangement of the elastic body 14 has a compact structure and is easy to install and maintain. Due to its high elasticity and strong ability to absorb shock and vibration, it can effectively adjust the torsional vibration characteristics of the transmission system, reduce shock and noise; it can operate at a higher speed and has a good ability to compensate for installation deviations in the axial, radial and angular directions.

[0030] In this embodiment, there are four said throwing blocks 5, which are generally fan-shaped. Figure 5 and Figure 6 As shown, the swing block 5 includes an arc-shaped friction portion 10, and two fixed portions 11 axially arranged side by side and connected to the inner side of the friction portion 10; a friction plate 12 is provided on the outer peripheral wall of the friction portion 10, and the friction plate 12 is integrally die-cast on the friction portion 10; a third fixing hole adapted to the first fixing hole is provided on the fixed portion 11. A plurality of fourth fixing holes are provided on both sides of the fixed portion 11, and six elastic members 6 are connected between the fixed portions 11 of two adjacent swing blocks 5 through the fourth fixing holes. In this embodiment, there are four swing blocks 5, so there are 24 elastic members 6, and the elastic members 6 are tension springs. Of course, in other embodiments, the number of elastic members 6 can be designed according to actual needs.

[0031] In this embodiment, a dust cover 13 is further provided on the outer cover plate 1 to prevent dust from falling into the gap between the inner ring 4 and the cover plate 1 .

[0032] The utility model provides a soft-connected centrifugal clutch, which realizes soft-connected transmission through the arrangement of the elastomer 14 connected to the outer periphery of the inner ring 4 and the plurality of elastic members 6 connected between adjacent ones of the plurality of swing blocks 5 arranged around the outer periphery of the elastomer 14; that is, when the inner ring 4 reaches a certain rotation speed, the swing blocks 5 overcome the pulling force of the elastic members 6 and the elastomer 14, move radially outward and thereby cause the friction plate 12 to contact the inner wall of the outer ring 3, thereby realizing connected transmission, and the arrangement of the elastomer 14 has the function of absorbing vibration and resisting impact, and can effectively adjust the torsional vibration characteristics of the transmission system, reduce shock and reduce noise.

[0033] The above are only preferred implementations of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention fall within the protection scope of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] 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 the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0036] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0037] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

Claims

1. A soft-connect centrifugal clutch comprising an outer ring and an inner ring supported and positioned by a cover plate and a bearing, and a plurality of swing blocks disposed between the outer ring and the inner ring; friction plates are disposed on the outer peripheral walls of the swing blocks, characterized in that: It also includes an elastic body connected to the outer periphery of the inner ring; a plurality of said swing blocks are arranged around and connected to the outer periphery of the elastic body, and two adjacent said swing blocks are connected to each other through a plurality of elastic members; When the inner ring reaches a certain rotation speed, the swing block overcomes the tension of the elastic member and the elastic body, moves radially outward and contacts the inner wall of the outer ring, thereby realizing connected transmission.

2. The soft connection centrifugal clutch according to claim 1, characterized in that: The elastic body is of an integrated type, and comprises a rubber body and a fixing piece embedded in the rubber body; the fixing piece is used to realize the connection and fixation of the swing block and the elastic piece.

3. The soft connection centrifugal clutch according to claim 2, characterized in that: The elastic body is integrally formed by casting the fixing piece of aviation aluminum alloy and natural rubber.

4. The soft-connect centrifugal clutch according to claim 2 or 3, characterized in that: The fixing part includes a plurality of first fixing parts and second fixing parts spaced apart along the circumferential direction of the rubber body; the first fixing part is provided with a first fixing hole along the axial direction of the rubber body for connecting with the swing block; the second fixing part is provided with a second fixing hole radially along the rubber body for connecting with the inner ring.

5. The soft-connect centrifugal clutch according to claim 4, characterized in that: The swing block includes an arc-shaped friction portion and two fixing portions axially arranged in parallel and connected to the inner side of the friction portion; a third fixing hole adapted to the first fixing hole is provided on the fixing portion; and a plurality of elastic members are connected between the fixing portions of two adjacent swing blocks.

6. The soft-connect centrifugal clutch according to claim 1, characterized in that: The elastic member is a tension spring.

7. The soft-connect centrifugal clutch according to claim 1, characterized in that: A dust cover is also provided on the cover plate placed on the outside.

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