CN212337958U - Centrifugal clutch - Google Patents
Centrifugal clutch Download PDFInfo
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- CN212337958U CN212337958U CN202021858864.4U CN202021858864U CN212337958U CN 212337958 U CN212337958 U CN 212337958U CN 202021858864 U CN202021858864 U CN 202021858864U CN 212337958 U CN212337958 U CN 212337958U
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- ring plate
- circular ring
- driving circular
- centrifugal
- upper driving
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Abstract
The utility model discloses a centrifugal clutch, which comprises a clutch housing and a centrifugal component, wherein the centrifugal component is arranged in the clutch housing, the centrifugal component comprises an upper driving circular ring plate and a lower driving circular ring plate which is fixedly connected with the upper driving circular ring plate, at least two sliding blocks which are arranged along the radial direction are uniformly distributed on the lower surface of the upper driving circular ring plate along the circumferential direction, and the sliding blocks are clamped between the upper driving circular ring plate and the lower driving circular ring plate; the inner side surface of each sliding block is recessed inwards to form a pressure spring mounting groove; each sliding block is correspondingly provided with a centrifugal block; the centrifugal block is provided with an arc surface which is in friction contact with the inner cylinder surface of the clutch outer cover and a sliding groove which is in relative sliding connection with the sliding block along the radial direction, and after the centrifugal block and the sliding block are connected in a mode that the sliding groove is sleeved outside the sliding block, the pressure spring is compressed between the bottom wall of the pressure spring mounting groove and the side surface of the sliding groove along the radial direction. The utility model discloses long service life has reduced the assembly requirement.
Description
Technical Field
The present invention relates to a clutch, and more particularly, to a centrifugal clutch.
Background
The existing centrifugal clutch transmits torque by friction force, and the basic structure of the existing centrifugal clutch consists of three elements: the centrifugal device comprises a driving part, a centrifugal body and a driven part. The centrifugal body is arranged on the driving part in a sliding way, and the driving part is driven by the prime motor to rotate and accelerate so as to throw the centrifugal body out in the radial direction. When the driving part reaches a specified angular speed, the thrown centrifugal body is pressed against the inner wall of the driven part, the driven part is forced to enter a motion state by friction force to transmit torque, and the driven part of the clutch can be connected with a load directly or through a belt pulley and other mechanisms. Centrifugal clutches have several features not found in other clutches and are therefore widely used in industry. A typical application of the small-sized engine includes a small-sized engine mainly driving a working device such as a brush cutter, and a structure for mounting the small-sized engine in the brush cutter can be seen in chinese patent No. zl201510547624. The existing centrifugal clutch is often scrapped due to spring breakage in the using process, so that the service life is influenced, and in addition, the concentric problem needs to be considered in the assembling process of the existing centrifugal clutch, so that the installation requirement is high, and the installation is inconvenient.
Disclosure of Invention
1. Technical problem to be solved by the utility model
An object of the utility model is to overcome foretell not enough, provide a centrifugal clutch, adopt the utility model discloses a technical scheme, simple structure, design benefit, long service life has reduced the assembly requirement.
2. Technical scheme
In order to achieve the above purpose, the utility model provides a technical scheme does:
the utility model discloses a centrifugal clutch, including clutch dustcoat and centrifugal subassembly, the centrifugal subassembly locate the clutch dustcoat, the centrifugal subassembly include the upper drive ring plate that is used for accepting the drive power of engine and is driven and rotate together and the lower drive ring plate that is used for linking firmly with upper drive ring plate together, along the circumference equipartition have two piece at least sliding blocks that set up radially between upper drive ring plate and the lower drive ring plate; the inner side surface of each sliding block is recessed inwards to form a pressure spring mounting groove; each sliding block is correspondingly provided with a centrifugal block; the centrifugal block is provided with an arc surface which is in friction contact with the inner cylinder surface of the clutch outer cover and a sliding groove which is in relative sliding connection with the sliding block along the radial direction, and after the centrifugal block and the sliding block are connected in a mode that the sliding groove is sleeved outside the sliding block, the pressure spring is compressed between the bottom wall of the pressure spring mounting groove and the side surface of the sliding groove along the radial direction.
Furthermore, four sliding blocks are uniformly distributed on the lower surface of the upper driving circular ring plate along the circumferential direction of the upper driving circular ring plate, two first threaded columns are uniformly distributed on the lower surface of the upper driving circular ring plate along the circumferential direction of the upper driving circular ring plate, and each first threaded column is positioned in the middle of two adjacent sliding blocks; two first connecting holes for being fixedly connected with an engine are uniformly distributed on the upper driving circular ring plate along the circumferential direction of the upper driving circular ring plate, and each first connecting hole is positioned in the middle of the two sliding blocks; the positions of the lower driving circular ring plate corresponding to the two first connecting holes are respectively provided with a first through hole for mounting a screw at the first connecting hole; and the positions of the lower driving circular ring plate corresponding to the two first threaded columns are provided with second connecting holes.
Furthermore, two sliding blocks are uniformly distributed on the lower surface of the upper driving circular ring plate along the circumferential direction of the upper driving circular ring plate, two first threaded columns are uniformly distributed on the lower surface of the upper driving circular ring plate along the circumferential direction of the upper driving circular ring plate, and each first threaded column is positioned in the middle of two adjacent sliding blocks; a second threaded column fixedly connected with an engine is arranged at the center of the upper surface of the upper driving circular ring plate; second connecting holes are formed in the positions, corresponding to the two first threaded columns, of the lower driving circular ring plate; and a second through hole for mounting a screw at the second threaded column is formed in the center of the lower driving circular ring plate.
Furthermore, three sliding blocks are uniformly distributed on the lower surface of the upper driving circular ring plate along the circumferential direction of the upper driving circular ring plate, three first threaded columns are uniformly distributed on the lower surface of the upper driving circular ring plate along the circumferential direction of the upper driving circular ring plate, and each first threaded column is positioned in the middle of two adjacent sliding blocks; a second threaded column fixedly connected with an engine is arranged at the center of the upper surface of the upper driving circular ring plate; second connecting holes are formed in the positions, corresponding to the two first threaded columns, of the lower driving circular ring plate; and a second through hole for mounting a screw at the second threaded column is formed in the center of the lower driving circular ring plate.
Furthermore, chamfers matched with the conical screw heads on the screws are arranged on the lower edges of the first connecting hole and the second connecting hole.
Furthermore, a plurality of lightening holes are uniformly distributed on the lower driving circular ring plate along the circumferential direction of the lower driving circular ring plate.
Furthermore, the centrifugal block is made of metal materials.
3. Advantageous effects
Adopt the technical scheme provided by the utility model, compare with existing well-known technique, have following beneficial effect:
(1) the utility model relates to a centrifugal clutch, because the centrifugal block is sleeved outside the sliding block through the sliding groove in a sliding way, and the pressure spring is compressed between the bottom wall of the pressure spring mounting groove and the side surface of the sliding groove along the radial direction, the centrifugal block slides to the innermost side along the radial direction towards the circle center in the initial state, when the upper driving ring plate is driven to rotate together under the driving force of an engine and needs to reach a specified angular speed, the tendency that the centrifugal block slides along the radial direction towards the circle center under the action of the pressure spring, namely the centrifugal block is thrown out, the arc surface of the thrown-out centrifugal body is tightly pressed with the inner cylinder surface of the clutch outer cover, the clutch outer cover is forced to rotate by friction force to transmit torque, because the pressure spring is compressed in the process of transmitting torque, the spring is stretched in the process of transmitting torque of the existing centrifugal clutch, the problem that the spring is broken in the use process can be ensured, the service life of the clutch is ensured; the centrifugal block can slide along the radial direction, and the arc surface of the centrifugal body of the centrifugal block is pressed with the inner cylinder surface of the clutch outer cover after the centrifugal block is thrown out, so that the centrifugal block after being thrown out can be self-centered according to the circle center of the clutch outer cover, a clutch assembly and the clutch outer cover do not need to be arranged concentrically during assembly, and the assembly requirement is reduced;
(2) the utility model discloses a centrifugal clutch, it is in order to guarantee that the counter weight is balanced, change the number and the position of first screw thread post according to the quantity that the centrifugal piece set up, also change the number and the position of second screw thread post or first connecting hole that are used for being connected with the engine;
(3) in the centrifugal clutch of the utility model, a plurality of lightening holes are uniformly distributed on the lower driving circular ring plate along the circumferential direction of the lower driving circular ring plate, so that the purpose of lightening weight is achieved;
(4) the utility model discloses a centrifugal clutch, its centrifugation piece adopts metal material to make, and antifriction is effectual, has guaranteed life.
Drawings
Fig. 1 is a schematic structural view of embodiment 1 of a centrifugal clutch according to the present invention;
FIG. 2 is an exploded view of a clutch pack of embodiment 1 of a centrifugal clutch according to the present invention;
fig. 3 is a schematic structural view of a centrifugal clutch according to embodiment 1 of the present invention, in which a clutch assembly is removed from a lower driving ring plate;
fig. 4 is a top three-dimensional view of a clutch pack of embodiment 2 of a centrifugal clutch according to the present invention;
fig. 5 is a bottom three-dimensional view of a clutch pack of embodiment 2 of a centrifugal clutch according to the present invention;
fig. 6 is a top three-dimensional view of a clutch pack of embodiment 3 of a centrifugal clutch according to the present invention;
fig. 7 is a bottom three-dimensional view of a clutch assembly according to embodiment 3 of the centrifugal clutch of the present invention.
The reference numerals in the schematic drawings illustrate: 1. a clutch housing; 2. an upper drive ring plate; 2-1, a first threaded post; 2-2, a first connection hole; 2-3, a second threaded column; 3. a lower drive ring plate; 3-1, a first via hole; 3-2, a second connecting hole; 3-3, a second via hole; 3-4, lightening holes; 4. a slider; 4-1, a pressure spring mounting groove; 5. a centrifugal block; 5-1, arc surface; 5-2, a chute; 6. and (5) pressing a spring.
Detailed Description
For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.
Example 1
With reference to fig. 1, 2 and 3, the centrifugal clutch of this embodiment includes a clutch housing 1 and a centrifugal assembly, the centrifugal assembly is disposed in the clutch housing 1, the centrifugal assembly includes an upper driving circular plate 2 driven by the driving force of the engine to rotate together and a lower driving circular plate 3 fixedly connected to the upper driving circular plate 2, and at least two sliding blocks 4 disposed along the radial direction are circumferentially and uniformly distributed between the upper driving circular plate 2 and the lower driving circular plate 3; in this embodiment, at least two sliding blocks 4 are formed on the lower surface of the upper driving circular ring plate 2; the inner side surface of each sliding block 4 is recessed inwards to form a pressure spring mounting groove 4-1; each sliding block 4 is correspondingly provided with a centrifugal block 5; the centrifugal block 5 is provided with an arc surface 5-1 which is in friction contact with the inner cylindrical surface of the clutch outer cover 1 and a sliding groove 5-2 which is in relative sliding connection with the sliding block 4 along the radial direction, after the centrifugal block 5 and the sliding block 4 are connected in a manner that the sliding groove 5-2 is sleeved outside the sliding block 4, the pressure spring 6 is compressed between the bottom wall of the pressure spring mounting groove 4-1 and the side surface of the sliding groove 5-2 along the radial direction; because the centrifugal block is slidably sleeved outside the sliding block through the sliding groove and the pressure spring is compressed between the bottom wall of the pressure spring mounting groove and the side surface of the sliding groove along the radial direction, the centrifugal block slides to the innermost side along the radial direction towards the circle center in the initial state, when the upper driving circular ring plate is driven to rotate together under the driving force of the engine and needs to reach the specified angular speed, the problem that the centrifugal block slides towards the center of a circle along the radial direction under the action of a pressure spring, namely the centrifugal block is thrown out, the arc surface of the thrown-out centrifugal body is pressed with the inner cylinder surface of the clutch outer cover, the clutch outer cover is forced to rotate by friction force to transmit torque, because the pressure spring is compressed in the process of transmitting the torque, the centrifugal clutch is different from the existing centrifugal clutch in that the spring is stretched in the process of transmitting the torque, the problem of spring fracture can be avoided in the using process, and the service life of the clutch is ensured; the centrifugal block can slide along the radial direction, and the arc surface of the centrifugal body of the centrifugal block is pressed with the inner cylinder surface of the clutch outer cover after the centrifugal block is thrown out, so that the centrifugal block after being thrown out can be self-centered according to the circle center of the clutch outer cover, a clutch assembly and the clutch outer cover do not need to be arranged concentrically during assembly, and the assembly requirement is reduced;
in order to ensure balance of the balance weight, the number and the position of the first threaded columns are changed according to the number of the centrifugal blocks, and the number and the position of the second threaded columns or the first connecting holes for connecting with the engine are also changed; in the embodiment, four sliding blocks 4 are uniformly distributed on the lower surface of the upper driving circular ring plate 2 along the circumferential direction of the upper driving circular ring plate, two first threaded columns 2-1 are uniformly distributed on the lower surface of the upper driving circular ring plate 2 along the circumferential direction of the upper driving circular ring plate, and each first threaded column 2-1 is positioned in the middle position of two adjacent sliding blocks 4; two first connecting holes 2-2 for fixedly connecting with an engine are uniformly distributed on the upper driving circular ring plate 2 along the circumferential direction of the upper driving circular ring plate, and each first connecting hole 2-2 is positioned in the middle of two sliding blocks 4; positions, corresponding to the two first connecting holes 2-2, on the lower driving circular ring plate 3 are respectively provided with a first through hole 3-1 for mounting a screw at the first connecting hole 2-2; second connecting holes 3-2 are formed in the positions, corresponding to the two first threaded columns 2-1, on the lower driving circular ring plate 3; in the embodiment, chamfers matched with the conical screw heads on the screws are arranged on the lower edge of the first connecting hole 2-2 and the lower edge of the second connecting hole 3-2; in order to reduce the weight, a plurality of lightening holes 3-4 are uniformly distributed on the lower driving circular ring plate 3 along the circumferential direction; the centrifugal block 5 is made of metal materials, has good friction resistance effect and ensures the service life.
Example 2
With reference to fig. 6 and 7, the basic structure of a centrifugal clutch according to the present embodiment is the same as that of embodiment 1, except that: two sliding blocks 4 are uniformly distributed on the lower surface of the upper driving circular ring plate 2 along the circumferential direction of the upper driving circular ring plate, two first threaded columns 2-1 are uniformly distributed on the lower surface of the upper driving circular ring plate 2 along the circumferential direction of the upper driving circular ring plate, and each first threaded column 2-1 is positioned in the middle of two adjacent sliding blocks 4; a second threaded column 2-3 fixedly connected with an engine is arranged at the center of the upper surface of the upper driving circular ring plate 2; second connecting holes 3-2 are formed in the positions, corresponding to the two first threaded columns 2-1, on the lower driving circular ring plate 3; and a second through hole 3-3 for installing a screw at the second threaded column 2-3 is arranged at the central position of the lower driving circular ring plate 3.
Example 3
With reference to fig. 4 and 5, the basic structure of a centrifugal clutch of the present embodiment is the same as that of embodiment 1, except that: three sliding blocks 4 are uniformly distributed on the lower surface of the upper driving circular ring plate 2 along the circumferential direction of the upper driving circular ring plate, three first threaded columns 2-1 are uniformly distributed on the lower surface of the upper driving circular ring plate 2 along the circumferential direction of the upper driving circular ring plate, and each first threaded column 2-1 is positioned in the middle of two adjacent sliding blocks 4; a second threaded column 2-3 fixedly connected with an engine is arranged at the center of the upper surface of the upper driving circular ring plate 2; second connecting holes 3-2 are formed in the positions, corresponding to the two first threaded columns 2-1, on the lower driving circular ring plate 3; and a second through hole 3-3 for installing a screw at the second threaded column 2-3 is arranged at the central position of the lower driving circular ring plate 3.
The utility model discloses a centrifugal clutch, simple structure, design benefit, long service life has reduced the assembly requirement.
The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.
Claims (7)
1. The utility model provides a centrifugal clutch, includes clutch housing (1) and centrifugal component, centrifugal component locate in clutch housing (1), its characterized in that: the centrifugal component comprises an upper driving circular ring plate (2) which is driven to rotate by receiving the driving force of an engine and a lower driving circular ring plate (3) which is fixedly connected with the upper driving circular ring plate (2), and at least two sliding blocks (4) which are arranged along the radial direction are uniformly distributed between the upper driving circular ring plate (2) and the lower driving circular ring plate (3) along the circumferential direction; the inner side surface of each sliding block (4) is recessed inwards to form a pressure spring mounting groove (4-1); each sliding block (4) is correspondingly provided with a centrifugal block (5); the centrifugal block (5) is provided with an arc surface (5-1) which is in friction contact with the inner cylindrical surface of the clutch housing (1) and a sliding groove (5-2) which is in relative sliding connection with the sliding block (4) along the radial direction, after the centrifugal block (5) and the sliding block (4) are connected in a manner that the sliding groove (5-2) is sleeved outside the sliding block (4), the pressure spring (6) is compressed between the bottom wall of the pressure spring mounting groove (4-1) and the side surface of the sliding groove (5-2) along the radial direction.
2. A centrifugal clutch according to claim 1 wherein: four sliding blocks (4) are uniformly distributed on the lower surface of the upper driving circular ring plate (2) along the circumferential direction of the upper driving circular ring plate, two first threaded columns (2-1) are uniformly distributed on the lower surface of the upper driving circular ring plate (2) along the circumferential direction of the lower driving circular ring plate, and each first threaded column (2-1) is positioned in the middle of two adjacent sliding blocks (4); two first connecting holes (2-2) which are used for being fixedly connected with an engine are uniformly distributed on the upper driving circular ring plate (2) along the circumferential direction of the upper driving circular ring plate, and each first connecting hole (2-2) is positioned in the middle of two sliding blocks (4); positions, corresponding to the two first connecting holes (2-2), on the lower driving circular ring plate (3) are provided with first through holes (3-1) for mounting screws at the first connecting holes (2-2); and second connecting holes (3-2) are formed in the positions, corresponding to the two first threaded columns (2-1), on the lower driving circular ring plate (3).
3. A centrifugal clutch according to claim 1 wherein: two sliding blocks (4) are uniformly distributed on the lower surface of the upper driving circular ring plate (2) along the circumferential direction of the upper driving circular ring plate, two first threaded columns (2-1) are uniformly distributed on the lower surface of the upper driving circular ring plate (2) along the circumferential direction of the upper driving circular ring plate, and each first threaded column (2-1) is positioned in the middle of two adjacent sliding blocks (4); a second threaded column (2-3) fixedly connected with an engine is arranged at the center of the upper surface of the upper driving circular ring plate (2); second connecting holes (3-2) are formed in the positions, corresponding to the two first threaded columns (2-1), on the lower driving circular ring plate (3); and a second through hole (3-3) for mounting a screw at the second threaded column (2-3) is formed in the center of the lower driving circular ring plate (3).
4. A centrifugal clutch according to claim 1 wherein: three sliding blocks (4) are uniformly distributed on the lower surface of the upper driving circular ring plate (2) along the circumferential direction of the upper driving circular ring plate, three first threaded columns (2-1) are uniformly distributed on the lower surface of the upper driving circular ring plate (2) along the circumferential direction of the upper driving circular ring plate, and each first threaded column (2-1) is positioned in the middle of two adjacent sliding blocks (4); a second threaded column (2-3) fixedly connected with an engine is arranged at the center of the upper surface of the upper driving circular ring plate (2); second connecting holes (3-2) are formed in the positions, corresponding to the two first threaded columns (2-1), on the lower driving circular ring plate (3); and a second through hole (3-3) for mounting a screw at the second threaded column (2-3) is formed in the center of the lower driving circular ring plate (3).
5. A centrifugal clutch according to claim 2 wherein: and chamfers matched with the conical screw heads on the screws are arranged on the lower edges of the first connecting hole (2-2) and the second connecting hole (3-2).
6. A centrifugal clutch according to claim 1 wherein: a plurality of lightening holes (3-4) are uniformly distributed on the lower driving circular ring plate (3) along the circumferential direction.
7. A centrifugal clutch according to claim 1 wherein: the centrifugal block (5) is made of metal materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021858864.4U CN212337958U (en) | 2020-08-31 | 2020-08-31 | Centrifugal clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021858864.4U CN212337958U (en) | 2020-08-31 | 2020-08-31 | Centrifugal clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212337958U true CN212337958U (en) | 2021-01-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021858864.4U Active CN212337958U (en) | 2020-08-31 | 2020-08-31 | Centrifugal clutch |
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| Country | Link |
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| CN (1) | CN212337958U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111895002A (en) * | 2020-08-31 | 2020-11-06 | 江苏共立科技有限公司 | Centrifugal clutch |
| CN113483036A (en) * | 2021-07-26 | 2021-10-08 | 刘艳祖 | Constant-speed stable driving control mechanism |
-
2020
- 2020-08-31 CN CN202021858864.4U patent/CN212337958U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111895002A (en) * | 2020-08-31 | 2020-11-06 | 江苏共立科技有限公司 | Centrifugal clutch |
| CN113483036A (en) * | 2021-07-26 | 2021-10-08 | 刘艳祖 | Constant-speed stable driving control mechanism |
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