Simple centrifugal friction clutch

Abstract

The utility model belongs to the technical field of clutches, and particularly relates to a simple centrifugal friction clutch which comprises a belt wheel seat, a supporting hole and a power transmission hole are formed in the belt wheel seat, a connecting pipe is rotationally connected in the supporting hole through a supporting assembly, and the connecting pipe extends into the power transmission hole and is in sliding connection with a friction assembly. And elastic assemblies used for enabling the friction assembly to be far away from the belt wheel seat are arranged on the two sides of the friction assembly. The belt wheel is simple in structure, low in manufacturing cost and convenient to mount and dismount.

Description

Technical Field

[0001] The utility model belongs to the technical field of clutches, and in particular relates to a simple centrifugal friction clutch. Background Art

[0002] The clutch is installed on the crankshaft of the gasoline engine. It is an assembly part in the agricultural machinery transmission system that is directly connected to the gasoline engine. It is the component that cuts off and transmits power between the gasoline engine and the agricultural machinery transmission system. It can be used for power transmission of equipment such as micro-tillers, tillers, sprayers, weeders, trenchers, etc. The friction clutch is the most widely used and oldest type of clutch.

[0003] The utility model patent with application number 202222919731.9 is a simple centrifugal friction clutch, including a pulley seat, a connecting seat is arranged in the pulley seat, a plurality of support columns are fixed on the connecting seat, and friction components are rotatably connected to the plurality of support columns. The plurality of friction components are arranged in a ring shape along the inner wall of the pulley seat, and the plurality of friction components are connected end to end through a plurality of elastic components and tightened with each other. The utility model avoids the occurrence of friction block jamming through rational design and reduces safety hazards. However, the utility model patent has a complex structure, high manufacturing cost, and is inconvenient to install and disassemble. Utility Model Content

[0004] The main technical problem to be solved by the utility model is to provide a simple centrifugal friction clutch with simple structure, low manufacturing cost and convenient installation and disassembly.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A simple centrifugal friction clutch includes a pulley seat, a support hole and a power transmission hole are opened in the pulley seat, a connecting pipe is rotatably connected to the support hole through a support assembly, the connecting pipe extends into the power transmission hole and is slidably connected to the friction assembly, and elastic components are provided on both sides of the friction assembly for keeping the friction assembly away from the pulley seat.

[0007] The following is a further optimization of the above technical solution by the present invention:

[0008] The connecting pipe is designed in three sections, including a support section, a connection section and a power transmission section in sequence. The support section is located in the support hole, the power transmission section is located in the power transmission hole, and the support section is rotatably connected to the pulley seat through a support assembly.

[0009] Further optimization: a plurality of slider grooves are provided on the outer surface of the power transmission section, and the friction assembly includes a plurality of swing blocks, which are slidably connected to their corresponding slider grooves.

[0010] Further optimization: the cross-section of the swing block is fan-shaped.

[0011] Further optimization: the swing block includes a slider, the slider is slidably connected to its corresponding slider groove, and a friction block is fixedly connected to one end of the slider close to the pulley seat.

[0012] Further optimization: grooves are provided on both sides of the friction block, and the grooves on the same side of multiple friction blocks are connected together to form an annular groove, and the elastic component is located in the corresponding annular groove.

[0013] Further optimization: The cross-sectional shapes of the slider and the slider groove are both fan-shaped structures.

[0014] Further optimization: the elastic component includes a tension spring, which is connected end to end to form a circular ring, and the tension spring is located in the corresponding annular groove.

[0015] Further optimization: the support assembly includes at least one bearing, the bearing is located in the support hole, the outer ring of the bearing is fixedly connected to the pulley seat, and the inner ring of the bearing is fixedly connected to the support section.

[0016] The utility model adopts a rational design, in which the power device drives the pulley seat to rotate through the belt, and under the action of centrifugal force, the friction component approaches the inner wall of the pulley seat, and under the action of friction, the pulley seat drives the connecting pipe to rotate through the friction component, and then transmits power to the actuator through the transmission shaft fixedly installed in the connecting pipe. The overall structure is simple and reliable, the manufacturing cost is low, and the installation and disassembly are convenient; the elastic component is located in the annular groove, which effectively protects the tension spring, avoids wear and tear, increases the service life of the tension spring, and facilitates the reset of the throwing block.

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-section structure of an embodiment of the present utility model;

[0020] Figure 3 This is a structural diagram of the connecting pipe in an embodiment of the present utility model;

[0021] Figure 4 It is a structural schematic diagram of the swing block in the embodiment of the present utility model.

[0022] In the figure: 1-pulley seat; 101-support hole; 102-power transmission hole; 2-connecting pipe; 201-support section; 202-connecting section; 203-power transmission section; 204-mounting hole; 205-slider groove; 3-throw block; 301-slider; 302-friction block; 303-groove; 4-tension spring; 5-bearing. DETAILED DESCRIPTION

[0023] like Figure 1-4 As shown, a simple centrifugal friction clutch includes a pulley seat 1, a support hole 101 and a power transmission hole 102 are opened in the pulley seat 1, a connecting pipe 2 is rotatably connected to the support hole 101 through a support assembly, the connecting pipe 2 extends into the power transmission hole 102 and is slidably connected to the friction assembly, and elastic components are provided on both sides of the friction assembly for keeping the friction assembly away from the pulley seat 1.

[0024] With this design, under the elastic force of the elastic component, the friction component is close to the connecting pipe 2, and the friction component does not contact the pulley seat 1. When the power device drives the pulley seat 1 to rotate through the belt, under the action of centrifugal force, the friction component is close to the inner wall of the pulley seat 1. Under the action of friction force, the pulley seat 1 drives the connecting pipe 2 to rotate through the friction component, and then transmits power to the actuator through the transmission shaft fixedly installed in the connecting pipe 2.

[0025] The support assembly includes two bearings 5 . The bearings 5 are located in the support hole 101 . The outer rings of the bearings 5 are fixedly connected to the pulley seat 1 , and the inner rings of the bearings 5 are fixedly connected to the connecting pipe 2 .

[0026] In addition to this embodiment, the number of the bearings 5 can also be one or more than two.

[0027] The connecting pipe 2 is an integrated three-section design, which includes a support section 201, a connecting section 202 and a power transmission section 203 in sequence. The support section 201 is located in the support hole 101, the power transmission section 203 is located in the power transmission hole 102, and the support section 201 is fixedly connected to the inner ring of the bearing 5.

[0028] A mounting hole 204 is provided in the connecting pipe 2 , and the mounting hole 204 is used for fixing and connecting the transmission shaft, and the transmission shaft is in transmission connection with the actuator, thereby facilitating the transmission of power to the actuator.

[0029] Three slider slots 205 are formed on the outer surface of the power transmission section 203 .

[0030] In addition to this embodiment, the number of the slider slots 205 can also be more than three.

[0031] The friction assembly includes three swing blocks 3 , which are slidably connected to their corresponding slider grooves 205 .

[0032] In addition to this embodiment, the number of the throwing blocks 3 can also be more than three.

[0033] The cross-section of the throwing block 3 is fan-shaped.

[0034] The swing block 3 includes a slider 301 , and the slider 301 is slidably connected to its corresponding slider groove 205 .

[0035] The cross-sections of the slider 301 and the slider groove 205 are both fan-shaped, so that the slider 301 can slide easily in the slider groove 205 and is not easily stuck.

[0036] A friction block 302 is fixedly connected to one end of the slider 301 close to the pulley seat 1 .

[0037] Grooves 303 are formed on both sides of the friction block 302 .

[0038] The grooves 303 on the same side of the three friction blocks 302 are connected together to form an annular groove, and the elastic component is located in the corresponding annular groove.

[0039] The elastic component includes a tension spring 4, which is connected end to end to form a circular ring. The tension spring 4 is located in the corresponding annular groove.

[0040] With this design, under the action of the elastic force of the tension spring 4, the three swing blocks 3 are close to the connecting pipe 2 and do not contact the pulley seat 1; the tension spring 4 is located in the annular groove, which effectively protects the tension spring 4, avoids wear and tear, increases the service life of the tension spring 4, and is easy to install and disassemble.

[0041] For ordinary technicians in this field, based on the teachings of this utility model, without departing from the principles and spirit of this utility model, changes, modifications, substitutions and variations made to the implementation methods are still within the scope of protection of this utility model.

Claims

1. A simple centrifugal friction clutch, comprising a pulley seat (1), characterized in that: The pulley seat (1) is provided with a support hole (101) and a power transmission hole (102); a connecting pipe (2) is rotatably connected to the support hole (101) via a support assembly; the connecting pipe (2) extends into the power transmission hole (102) and is slidably connected to a friction assembly; elastic assemblies are provided on both sides of the friction assembly for keeping the friction assembly away from the pulley seat (1).

2. A simple centrifugal friction clutch according to claim 1, characterized in that: The connecting pipe (2) is of an integrated three-section design, comprising a support section (201), a connection section (202), and a power transmission section (203) in sequence, wherein the support section (201) is located in the support hole (101), the power transmission section (203) is located in the power transmission hole (102), and the support section (201) is rotatably connected to the pulley seat (1) via a support assembly.

3. A simple centrifugal friction clutch according to claim 2, characterized in that: A plurality of slider grooves (205) are provided on the outer surface of the power transmission section (203), and the friction assembly comprises a plurality of swing blocks (3), wherein the swing blocks (3) are slidably connected to their corresponding slider grooves (205).

4. A simple centrifugal friction clutch according to claim 3, characterized in that: The cross-section of the swing block (3) is a fan-shaped structure.

5. A simple centrifugal friction clutch according to claim 4, characterized in that: The swing block (3) comprises a slider (301), the slider (301) is slidably connected to its corresponding slider groove (205), and a friction block (302) is fixedly connected to one end of the slider (301) close to the pulley seat (1).

6. A simple centrifugal friction clutch according to claim 5, characterized in that: Grooves (303) are provided on both sides of the friction block (302), and the grooves (303) on the same side of the plurality of friction blocks (302) are connected together to form an annular groove, and the elastic component is located in the corresponding annular groove.

7. A simple centrifugal friction clutch according to claim 6, characterized in that: The cross-sectional shapes of the slider (301) and the slider groove (205) are both fan-shaped structures.

8. The simplified centrifugal friction clutch according to claim 7, characterized in that: The elastic component comprises a tension spring (4), which is connected end to end to form a circular ring, and the tension spring (4) is located in a corresponding annular groove.

9. The simplified centrifugal friction clutch according to claim 8, characterized in that: The support assembly comprises at least one bearing (5), the bearing (5) being located in the support hole (101), the outer ring of the bearing (5) being fixedly connected to the pulley seat (1), and the inner ring of the bearing (5) being fixedly connected to the support section (201).

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