Flexible connection centrifugal clutch

Abstract

The invention 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 present invention relates to the technical field of clutches, and 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 or disengage. Existing centrifugal clutches mainly use a rigid direct connection (steel to steel) between the swing block and the inner ring to transmit torque. This design has obvious shortcomings in situations where the vehicle is frequently started and stopped or where there are frequent impact loads and severe vibrations.

[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 parts 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. Summary of the invention

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

[0006] The present invention adopts the following scheme:

[0007] The present application provides a soft-connected 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 arranged between the outer ring and the inner ring, and an elastic body connected to the outer periphery of the inner ring; the plurality of swing blocks are arranged around and connected to the outer periphery of the elastic body, and two adjacent swing blocks are connected to each other by a plurality of elastic members;

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

[0009] Furthermore, the elastic body is of an integrated type, and includes 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.

[0010] Furthermore, the elastomer is integrally formed by casting the fixing part 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 axially along 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 matching the first fixing hole is provided on the fixing portion; and a plurality of the elastic members are connected between the fixing portions of two adjacent swing blocks.

[0013] Furthermore, a friction plate is provided on the outer peripheral wall of the friction part.

[0014] Furthermore, the elastic member is a tension spring.

[0015] Furthermore, a dust cover is also provided on the outer cover plate.

[0016] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0017] The present invention 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 ones, and the clutch has the function 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

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. 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 related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a front structural schematic diagram of a soft-connected centrifugal clutch according to an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of AA;

[0021] Figure 3 It is a schematic diagram of the elastic body structure of a soft-connected centrifugal clutch according to an embodiment of the present invention;

[0022] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure of the middle BB;

[0023] Figure 5 It is a schematic diagram of the front structure of a swing block of a soft-connected centrifugal clutch according to an embodiment of the present invention;

[0024] Figure 6It is a schematic diagram of the side structure of a swing block of a soft-connected centrifugal clutch according to an embodiment of the present invention;

[0025] Icons: cover plate 1, bearing 2, outer ring 3, inner ring 4, swing block 5, elastic member 6, first fixing member 7, second fixing member 8, rubber body 9, friction part 10, fixing part 11, friction plate 12, dust cover 13, elastic body 14. DETAILED DESCRIPTION

[0026] 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 of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to 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 invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0027] Example

[0028] Combination Figures 1 to 6 As shown, this embodiment provides a soft-connected 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 arranged between the outer ring 3 and the inner ring 4, and also comprising 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 two adjacent swing blocks 5 are connected to each other by a plurality of elastic members 6;

[0029] 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 connection transmission.

[0030] Specifically, in this embodiment, Figure 1 and Figure 2 As 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 4As shown, the elastic body 14 is an integrated type, 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 setting of the elastic body 14 has a compact structure and is easy to install and maintain. Because it has high elasticity and strong ability to absorb impact vibration, it can effectively adjust the torsional vibration characteristics of the transmission system, reduce shock and noise; it can work at a higher speed and has good ability to compensate for installation deviations in the axial, radial and angular directions.

[0031] In this embodiment, four swing blocks 5 are included, and the whole is roughly 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 in parallel and connected to the inner side of the friction portion 10; a friction plate 12 is arranged 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 matched with the first fixing hole is arranged on the fixed portion 11. A plurality of fourth fixing holes are arranged 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 the elastic members 6 can be designed according to actual needs.

[0032] In this embodiment, a dust cover 13 is further provided on the cover plate 1 disposed on the outside to prevent dust from falling into the gap between the inner ring 4 and the cover plate 1 .

[0033] The present invention provides a soft-connected centrifugal clutch, which realizes soft-connected transmission through the elastomer 14 connected to the outer periphery of the inner ring 4, and the plurality of swing blocks 5 arranged around the outer periphery of the elastomer 14, with a plurality of elastic members 6 connected between adjacent ones; 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 thus cause the friction plate 12 to contact the inner wall of the outer ring 3, thereby realizing connected transmission, and the setting 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.

[0034] 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 belong to the protection scope of the present invention.

[0035] 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 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 referred device or element 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.

[0036] 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. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] 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.

[0038] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

Claims

1. A soft-connected 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 arranged between the outer ring and the inner ring, characterized in that: It also includes an elastic body connected to the outer periphery of the inner ring; a plurality of swing blocks are connected to the outer periphery of the elastic body, and two adjacent 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 pulling force of the elastic member and the elastic body, moves radially outward and contacts the inner wall of the outer ring, thereby realizing connection 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 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 axially along 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.

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 matching the first fixing hole is arranged on the fixing portion; and a plurality of the elastic members are connected between the fixing portions of two adjacent swing blocks.

6. The soft-connect centrifugal clutch according to claim 5, characterized in that: A friction plate is integrally die-casted on the outer peripheral wall of the friction portion.

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

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

Images