CN109185359B

CN109185359B - Clutch device

Info

Publication number: CN109185359B
Application number: CN201811338582.9A
Authority: CN
Inventors: 沈健龙
Original assignee: Zhejiang Lite Motorcycle Parts Co ltd
Current assignee: ZHEJIANG LITE MOTORCYCLE PARTS Co.,Ltd.
Priority date: 2017-09-11
Filing date: 2017-09-11
Publication date: 2020-06-23
Anticipated expiration: 2037-09-11
Also published as: CN107355489B; CN107355489A; CN109185361B; CN109185361A; CN109185359A

Abstract

The invention belongs to the technical field of clutches, and particularly relates to a clutch which comprises an output shaft, a transmission mechanism, an installation outer shell, an input shaft, a driving strip and an installation inner shell, wherein when the input shaft of the clutch designed by the invention rotates anticlockwise; the input shaft can drive the driving gear to rotate; the rotation of the driving gear can respectively drive the fourth gear and the fifth gear to rotate; the fourth gear and the fifth gear rotate to enable six extrusion arc plates corresponding to the three driving strips to extrude the three driving strips; when the clamping force of the extrusion block on the driving strip is larger than the load on the output shaft; the driving strip is driven to rotate around the axis of the input shaft by the clamping force of the two extrusion blocks on the driving strip; thereby driving the mounting shell to rotate; the mounting shell rotates to drive the output shaft to rotate; i.e. the input shaft will drive the output shaft to rotate.

Description

Clutch device

Technical Field

The invention belongs to the technical field of clutches, and particularly relates to a clutch.

Background

The currently used clutches are mostly one-way clutches; when the output shaft of the clutch rotates, the clutch is affected, so that the clutch is damaged; thus greatly weakening the function of the clutch; a lot of inconvenience is brought in the using process; thus greatly limiting the development of mechanical industry; it is therefore highly desirable to design a clutch that will not damage the clutch when the output shaft is rotating.

The present invention is directed to a clutch that solves the above problems.

Disclosure of Invention

In order to solve the defects in the prior art, the invention discloses a clutch which is realized by adopting the following technical scheme.

A clutch, characterized in that: the device comprises an output shaft, a transmission mechanism, an installation shell, an input shaft, a driving strip, an input shaft hole, a supporting annular groove, an installation annular groove, a barb strip, a driving gear, an installation inner shell, a V-shaped groove, an arc-shaped guide groove, a C-shaped elastic strip, a pushing plate, a square guide groove, a supporting shaft hole and a gear installation groove, wherein the supporting annular groove and the installation annular groove are arranged on the inner side of the installation shell; the center of the side surface of the mounting annular groove is provided with a through input shaft hole; the output shaft is arranged on the outer side surface of the mounting shell and is close to the support ring groove; three driving strips are uniformly arranged on the circular surface of the mounting annular groove in the circumferential direction; six barb strips are symmetrically arranged on two sides of each of the three driving strips; the mounting inner shell is provided with a supporting shaft hole; the inner side of the mounting inner shell is provided with a gear mounting groove; three V-shaped grooves are uniformly formed in the circumferential direction on the outer circular surface at one end where the inner shell is installed; the fan-shaped side surfaces of the three V-shaped grooves are symmetrically provided with two arc-shaped guide grooves; two side surfaces of the three V-shaped grooves, which are internally provided with the arc-shaped guide grooves, are symmetrically provided with two square guide grooves, and the two square guide grooves are respectively positioned at the outer sides of the two corresponding arc-shaped guide grooves; the mounting inner shell is mounted in the mounting outer shell through the matching of an outer circular surface at one end which is not provided with the V-shaped groove and a supporting annular groove on the mounting outer shell; the input shaft is arranged in the supporting shaft hole; the driving gear is arranged on the input shaft and is positioned in the gear mounting groove; three transmission mechanisms are uniformly arranged on the outer circular surface of the driving gear in the circumferential direction and are respectively positioned in the three V-shaped grooves; the three transmission mechanisms are respectively matched with the three driving strips; one end of the C-shaped elastic strip is arranged on the outer side surface of the mounting inner shell; one end of the pushing plate is arranged on the input shaft; the other end of the pushing plate is matched with the other end of the C-shaped elastic strip; the C-shaped elastic strip and the pushing plate are both positioned on the inner side of the mounting annular groove on the mounting shell.

The transmission mechanism comprises an extrusion arc block, a first gear, a second annular column, a trigger arc plate, a first gear shaft, a third annular column, a fourth gear, a fifth gear, a sixth gear, a second gear shaft, an arc-shaped guide strip, a guide strip mounting plate, a square guide block, a third gear shaft, a first tooth and a second tooth, wherein one end of the second gear shaft is mounted on the side wall of the V-shaped groove; the fifth gear is arranged at the other end of the second gear shaft; the fifth gear is meshed with the driving gear; the sixth gear is arranged on the second gear shaft through an overload limiter and is positioned between the fifth gear and the corresponding side wall of the V-shaped groove; one end of the first gear shaft is arranged on the side wall of the V-shaped groove; the first gear is arranged at the other end of the first gear shaft; the first gear is meshed with the sixth gear; a section of second tooth is arranged on the outer circular surface of the second annular column; the second annular column is arranged on the first gear shaft and is positioned between the first gear and the corresponding side wall of the V-shaped groove; one end of the third gear shaft is arranged on the side wall of the V-shaped groove; the fourth gear is arranged at the other end of the third gear shaft; the fourth gear is meshed with the driving gear; a section of first tooth is arranged on the outer circular surface of the third annular column; the third annular column is arranged on the third gear shaft and is positioned between the fourth gear and the corresponding side wall of the V-shaped groove; one end of the trigger arc plate is provided with a guide bar mounting plate; the lower side of the guide bar mounting plate is provided with teeth; one side of the guide bar mounting plate is provided with an arc-shaped guide bar; the two trigger arc plates are arranged in the V-shaped groove through the matching of the arc guide strips corresponding to the two trigger arc plates and the two arc guide grooves on the corresponding V-shaped groove; the two trigger arc plates are respectively matched with first teeth on the third annular column and second teeth on the second annular column through teeth on the guide bar mounting plate; two sides of the extrusion arc block are symmetrically provided with two square guide blocks; the two extrusion arc blocks are respectively installed in the corresponding V-shaped grooves through the matching of the two square guide blocks on the two extrusion arc blocks and the two square guide grooves on the corresponding V-shaped grooves, and the two extrusion arc blocks are positioned on the upper sides of the two guide strip installation plates; the two extrusion arc blocks are respectively matched with the two trigger arc plates.

The limiting force of the overload limiter is larger than the load force on the second gear shaft during transmission.

The three groups of extrusion arc blocks positioned in the three V-shaped grooves are respectively matched with the three driving strips.

As a further improvement of the technology, the two arc-shaped guide strips corresponding to the two trigger arc plates are matched with the two arc-shaped guide grooves on the corresponding V-shaped groove, so that the two corresponding trigger arc plates can slide along the corresponding arc-shaped guide grooves; meanwhile, the trigger arc plate can not be separated from the constraint of the arc guide groove; so that the two trigger arc plates are always tightly attached to the side wall surfaces of the corresponding V-shaped grooves.

As a further improvement of the technology, the two arc-shaped guide grooves corresponding to the two trigger arc plates play a role in limiting the two trigger arc plates; so that the two trigger arc plates can only move towards one side of the corresponding driving strip; the two square guide grooves corresponding to the extrusion arc block play a role in limiting the extrusion arc block; so that both squeezing arc blocks can move only towards one side of the corresponding driving strip.

As a further improvement of the technology, the three driving bars are respectively positioned between three groups of extrusion arc blocks in the three V-shaped grooves in the initial state; the barb strips on the three driving strips are respectively in friction fit with the three groups of extrusion arc blocks.

As a further improvement of the present technique, the barb strip is resilient.

As a further improvement of the present technology, the second teeth on the second annular post in the initial state are engaged with the teeth under the corresponding guide bar mounting plate; when the input shaft rotates counterclockwise; and in a certain angle, the second teeth on the second annular column are always meshed with the teeth under the corresponding guide bar mounting plate.

As a further improvement of the present technology, the first teeth on the third annular post are not engaged with the teeth under the corresponding guide bar mounting plate in the initial state; when the input shaft rotates counterclockwise; after a certain angle, the first teeth on the third annular column are meshed with the teeth under the corresponding guide bar mounting plate.

As a further improvement of the present technology, when the input shaft rotates counterclockwise in the initial state; the meshing angle of the second teeth on the second annular column and the teeth under the corresponding guide bar mounting plate is the same as the counterclockwise rotation angle of the input shaft before the first teeth on the third annular column and the teeth under the corresponding guide bar mounting plate are meshed.

As a further improvement of the present technique, the elastic limit of the elastic arc-shaped strip matches the length of the first tooth on the third annular column.

Compared with the traditional clutch technology, the clutch designed by the invention can not damage the clutch when the output shaft rotates; the clutch is protected; and simultaneously has the function of a clutch.

The inner side of the mounting shell is provided with a supporting annular groove and a mounting annular groove; the output shaft is arranged on the outer side surface of the mounting shell; three driving strips are uniformly arranged on the circular surface of the mounting annular groove in the circumferential direction; six barb strips are symmetrically arranged on two sides of each of the three driving strips; three V-shaped grooves are uniformly formed in the circumferential direction on the outer circular surface at one end where the inner shell is installed; the mounting inner shell is mounted in the mounting outer shell through the matching of an outer circular surface at one end which is not provided with the V-shaped groove and a supporting annular groove on the mounting outer shell; the input shaft is arranged in the supporting shaft hole; the driving gear is arranged on the input shaft and is positioned in the gear mounting groove; three transmission mechanisms are uniformly arranged on the outer circular surface of the driving gear in the circumferential direction; one end of the C-shaped elastic strip is arranged on the outer side surface of the mounting inner shell; one end of the pushing plate is arranged on the input shaft; the other end of the pushing plate is matched with the other end of the C-shaped elastic strip; one end of the second gear shaft is arranged on the side wall of the V-shaped groove; the fifth gear is arranged at the other end of the second gear shaft; the fifth gear is meshed with the driving gear; the sixth gear is arranged on the second gear shaft; one end of the first gear shaft is arranged on the side wall of the V-shaped groove; the first gear is arranged at the other end of the first gear shaft; the first gear is meshed with the sixth gear; a section of second tooth is arranged on the outer circular surface of the second annular column; the second annular column is arranged on the first gear shaft; one end of the third gear shaft is arranged on the side wall of the V-shaped groove; the fourth gear is arranged at the other end of the third gear shaft; the fourth gear is meshed with the driving gear; a section of first tooth is arranged on the outer circular surface of the third annular column; the third annular column is arranged on the third gear shaft; one end of the trigger arc plate is provided with a guide bar mounting plate; the lower side of the guide bar mounting plate is provided with teeth; the two trigger arc plates are arranged in the V-shaped groove through the matching of the arc guide strips corresponding to the two trigger arc plates and the two arc guide grooves on the corresponding V-shaped groove; the two extrusion arc blocks are respectively installed in the corresponding V-shaped grooves through the matching of the two square guide blocks on the two extrusion arc blocks and the two square guide grooves on the corresponding V-shaped grooves, and the two extrusion arc blocks are positioned on the upper sides of the two guide strip installation plates; the two extrusion arc blocks are respectively matched with the two trigger arc plates; in the initial state, the three driving strips are respectively positioned among the three groups of extrusion arc blocks in the three V-shaped grooves; the barb strips on the three driving strips are respectively in friction fit with the three groups of extrusion arc blocks. The elastic limit of the elastic arc-shaped strip is matched with the length of the first tooth on the third annular column. When the input shaft rotates counterclockwise; the input shaft can drive the driving gear to rotate; the rotation of the driving gear can respectively drive the fourth gear and the fifth gear to rotate; the fifth gear rotates to drive the second gear shaft to rotate; the second gear shaft rotates to drive the sixth gear to rotate; the sixth gear rotates to drive the first gear to rotate; the first gear rotates to drive the first gear shaft to rotate; the first gear shaft rotates to drive the second annular column to rotate; as the second teeth on the second annular column are meshed with the teeth under the corresponding guide bar mounting plate in the initial state; when the input shaft rotates counterclockwise; and in a certain angle, the second teeth on the second annular column are always meshed with the teeth under the corresponding guide bar mounting plate. Meanwhile, the two arc guide grooves corresponding to the two trigger arc plates play a role in limiting the two trigger arc plates; so that the two trigger arc plates can only move towards one side of the corresponding driving strip; so within a certain angle; the second annular column rotates to drive the guide bar mounting plate engaged with the second annular column to move towards one side of the driving bar along the arc-shaped guide groove; the guide bar mounting plate moves to drive the corresponding trigger arc plate to move; the two square guide grooves corresponding to the extrusion arc block play a role in limiting the extrusion arc block; so that both squeezing arc blocks can move only towards one side of the corresponding driving strip. Therefore, the trigger arc plate moves to drive the corresponding extrusion arc block to move; the extrusion arc block moves to press the barb strip on the corresponding driving strip; meanwhile, the fourth gear rotates to drive the third gear shaft to rotate; the third gear shaft rotates to drive the third annular column to rotate; as the first teeth on the third annular column are not meshed with the teeth under the corresponding guide bar mounting plate in the initial state; the third annular column can not drive the corresponding guide bar mounting plate to move when rotating; namely, the corresponding trigger arc plate can not move; so that the corresponding extrusion arc block cannot move; when the compressed barb strip reaches the limit; the tail end of a second tooth on the second annular column and the tooth on the lower side of the corresponding guide bar mounting plate also reach a limit separation state; namely, the second annular column is in a blocking state at the moment; the second annular column is in a blocking state, so that the first gear shaft is in a blocking state; the first gear shaft is in a blocking state, so that the first gear is in the blocking state; the first gear is in a blocking state, so that the sixth gear is in a blocking state; the second driving shaft driving the sixth gear is always in a rotating state; therefore, the sixth gear is arranged on the second gear shaft through the overload limiter; the limiting force of the overload limiter is greater than the load force on the second gear shaft during transmission. The sixth gear is always in a locked state under the driving of the second gear shaft through the overload limiter. Meanwhile, when the input shaft rotates, the push plate can be driven to rotate; as the input shaft rotates counterclockwise; after a certain angle, the first teeth on the third annular column are meshed with the teeth under the corresponding guide bar mounting plate, and when the input shaft rotates anticlockwise in the initial state; the meshing angle of the second teeth on the second annular column and the teeth under the corresponding guide bar mounting plate is the same as the counterclockwise rotation angle of the input shaft before the first teeth on the third annular column and the teeth under the corresponding guide bar mounting plate are meshed. So when the compressed barb strip reaches a limit; the first teeth on the third annular column are just meshed with the teeth under the corresponding guide bar mounting plate; meanwhile, the pushing plate is just in contact with the C-shaped elastic strip in the rotating process; at the moment, the third annular column rotates to drive the corresponding guide bar mounting plate to move towards one side close to the driving bar; the guide bar mounting plate moves to drive the corresponding trigger arc plate to move; the trigger arc plate moves to drive the corresponding extrusion arc block to move; the extrusion arc block moves to press the barb strip on the corresponding driving strip; in the process, the C-shaped elastic strip is compressed by the rotation of the pushing plate; when the load on the output shaft is small and the rotation angle of the third annular column does not enable the first teeth on the third annular column to be separated from the teeth on the lower side of the corresponding guide bar mounting plate; meanwhile, the pushing plate compresses the C-shaped elastic strip, so that the C-shaped elastic strip cannot movably mount the inner shell to rotate; but the extrusion block corresponding to the third annular column can drive the driving strip to rotate around the axis of the input shaft; thereby driving the mounting shell to rotate; the mounting shell rotates to drive the output shaft to rotate; namely, the input shaft can drive the output shaft to rotate; when the load on the output shaft is large and the third annular column rotates by an angle, the first teeth on the third annular column are separated from the teeth on the lower side of the corresponding guide bar mounting plate; namely, the pressed barbed strip corresponding to the third annular column just reaches the limit; meanwhile, the pushing plate compresses the C-shaped elastic strip to enable the C-shaped elastic strip to reach the limit; the pushing plate drives the inner mounting shell to rotate; the tail end of the first tooth on the third annular column is just separated from the tooth on the lower side of the corresponding guide bar mounting plate; the arc plate is triggered under the action of the elasticity of the corresponding barb strip to drive the corresponding guide strip mounting plate to move reversely; the guide bar mounting plate moves reversely, so that the corresponding third annular column rotates reversely; but the third annular column rotates reversely, so that the teeth on the lower side of the corresponding guide bar mounting plate are meshed with the first teeth on the corresponding third annular column again; the teeth on the lower side of the guide bar mounting plate are meshed with the first teeth on the corresponding third annular column again, so that the guide bar mounting plate moves towards one side close to the driving bar; the guide bar mounting plate moves to enable the tail end of the first tooth on the corresponding third annular column to be separated from the tooth on the lower side of the corresponding guide bar mounting plate; the corresponding trigger arc plate can be limited by matching the teeth on the second annular column with the corresponding guide bar mounting plate; in the process, the pushing plate compresses the C-shaped elastic strip to enable the C-shaped elastic strip to reach the limit; the pushing plate drives the inner mounting shell to rotate; meanwhile, when the clamping force of the two extrusion blocks on the driving strip is larger than the load on the output shaft; the driving strip is driven to rotate around the axis of the input shaft by the clamping force of the two extrusion blocks on the driving strip; thereby driving the mounting shell to rotate; the mounting shell rotates to drive the output shaft to rotate; i.e. the input shaft will drive the output shaft to rotate. When the clamping force of the two extrusion blocks on the driving strip is smaller than the load on the output shaft; the driving strip can be separated from the constraint of the two corresponding extrusion blocks; at the moment, the input shaft cannot drive the output shaft to rotate; the motor is prevented from being burnt out due to overlarge load. When the output shaft rotates; the output shaft rotates to drive the mounting shell to rotate; if the load on the input shaft is large; the rotation of the mounting shell can make the driving strip separate from the constraint of the corresponding extrusion block; at the moment, the output shaft does not influence the input shaft; if the load on the input shaft is small; the rotation of the mounting shell can enable the driving strip to move corresponding to the rotation of the extrusion block; and then the output shaft is driven to rotate by the sequential transmission of the extrusion blocks.

When one uses the clutch designed by the invention; when the input shaft rotates anticlockwise; the input shaft can drive the driving gear to rotate; the rotation of the driving gear can respectively drive the fourth gear and the fifth gear to rotate; the fifth gear rotates to drive the second gear shaft to rotate; the second gear shaft rotates to drive the sixth gear to rotate; the sixth gear rotates to drive the first gear to rotate; the first gear rotates to drive the first gear shaft to rotate; the first gear shaft rotates to drive the second annular column to rotate; as the second teeth on the second annular column are meshed with the teeth under the corresponding guide bar mounting plate in the initial state; when the input shaft rotates counterclockwise; and in a certain angle, the second teeth on the second annular column are always meshed with the teeth under the corresponding guide bar mounting plate. Meanwhile, the two arc guide grooves corresponding to the two trigger arc plates play a role in limiting the two trigger arc plates; so that the two trigger arc plates can only move towards one side of the corresponding driving strip; so within a certain angle; the second annular column rotates to drive the guide bar mounting plate engaged with the second annular column to move towards one side of the driving bar along the arc-shaped guide groove; the guide bar mounting plate moves to drive the corresponding trigger arc plate to move; the two square guide grooves corresponding to the extrusion arc block play a role in limiting the extrusion arc block; so that both squeezing arc blocks can move only towards one side of the corresponding driving strip. Therefore, the trigger arc plate moves to drive the corresponding extrusion arc block to move; the extrusion arc block moves to press the barb strip on the corresponding driving strip; meanwhile, the fourth gear rotates to drive the third gear shaft to rotate; the third gear shaft rotates to drive the third annular column to rotate; as the first teeth on the third annular column are not meshed with the teeth under the corresponding guide bar mounting plate in the initial state; the third annular column can not drive the corresponding guide bar mounting plate to move when rotating; namely, the corresponding trigger arc plate can not move; so that the corresponding extrusion arc block cannot move; when the compressed barb strip reaches the limit; the tail end of a second tooth on the second annular column and the tooth on the lower side of the corresponding guide bar mounting plate also reach a limit separation state; namely, the second annular column is in a blocking state at the moment; the second annular column is in a blocking state, so that the first gear shaft is in a blocking state; the first gear shaft is in a blocking state, so that the first gear is in the blocking state; the first gear is in a blocking state, so that the sixth gear is in a blocking state; the second driving shaft driving the sixth gear is always in a rotating state; therefore, the sixth gear is arranged on the second gear shaft through the overload limiter; the limiting force of the overload limiter is greater than the load force on the second gear shaft during transmission. The sixth gear is always in a locked state under the driving of the second gear shaft through the overload limiter. Meanwhile, when the input shaft rotates, the push plate can be driven to rotate; as the input shaft rotates counterclockwise; after a certain angle, the first teeth on the third annular column are meshed with the teeth under the corresponding guide bar mounting plate, and when the input shaft rotates anticlockwise in the initial state; the meshing angle of the second teeth on the second annular column and the teeth under the corresponding guide bar mounting plate is the same as the counterclockwise rotation angle of the input shaft before the first teeth on the third annular column and the teeth under the corresponding guide bar mounting plate are meshed. So when the compressed barb strip reaches a limit; the first teeth on the third annular column are just meshed with the teeth under the corresponding guide bar mounting plate; meanwhile, the pushing plate is just in contact with the C-shaped elastic strip in the rotating process; at the moment, the third annular column rotates to drive the corresponding guide bar mounting plate to move towards one side close to the driving bar; the guide bar mounting plate moves to drive the corresponding trigger arc plate to move; the trigger arc plate moves to drive the corresponding extrusion arc block to move; the extrusion arc block moves to press the barb strip on the corresponding driving strip; in the process, the C-shaped elastic strip is compressed by the rotation of the pushing plate; when the third annular column rotates by an angle, the first teeth on the third annular column are separated from the teeth on the lower side of the corresponding guide bar mounting plate; namely, the pressed barbed strip corresponding to the third annular column just reaches the limit; meanwhile, the pushing plate compresses the C-shaped elastic strip to enable the C-shaped elastic strip to reach the limit; the pushing plate drives the inner mounting shell to rotate; the tail end of the first tooth on the third annular column is just separated from the tooth on the lower side of the corresponding guide bar mounting plate; the arc plate is triggered under the action of the elasticity of the corresponding barb strip to drive the corresponding guide strip mounting plate to move reversely; the guide bar mounting plate moves reversely, so that the corresponding third annular column rotates reversely; but the third annular column rotates reversely, so that the teeth on the lower side of the corresponding guide bar mounting plate are meshed with the first teeth on the corresponding third annular column again; the teeth on the lower side of the guide bar mounting plate are meshed with the first teeth on the corresponding third annular column again, so that the guide bar mounting plate moves towards one side close to the driving bar; the guide bar mounting plate moves to enable the tail end of the first tooth on the corresponding third annular column to be separated from the tooth on the lower side of the corresponding guide bar mounting plate; the corresponding trigger arc plate can be limited by matching the teeth on the second annular column with the corresponding guide bar mounting plate; in the process, the pushing plate compresses the C-shaped elastic strip to enable the C-shaped elastic strip to reach the limit; the pushing plate drives the inner mounting shell to rotate; meanwhile, when the clamping force of the two extrusion blocks on the driving strip is larger than the load on the output shaft; the driving strip is driven to rotate around the axis of the input shaft by the clamping force of the two extrusion blocks on the driving strip; thereby driving the mounting shell to rotate; the mounting shell rotates to drive the output shaft to rotate; i.e. the input shaft will drive the output shaft to rotate.

Drawings

Fig. 1 is an external view of an entire part.

Fig. 2 is a schematic view of a driver blade installation.

Fig. 3 is a schematic view of the mounting housing structure.

Fig. 4 is a schematic view of a driver blade configuration.

Fig. 5 is a schematic cross-sectional view of the entire assembly.

Fig. 6 is a schematic view of the transmission installation.

Fig. 7 is a schematic view of a structure for mounting the inner case.

Fig. 8 is a schematic cross-sectional view of the installation of the inner housing.

Fig. 9 is a schematic diagram of the transmission mechanism.

Figure 10 is a schematic view of the trigger arc plate installation.

FIG. 11 is a third annular column installation schematic.

Fig. 12 is a schematic view of a first tooth arrangement.

FIG. 13 is a second annular post installation schematic.

Fig. 14 is a schematic view of a second tooth arrangement.

FIG. 15 is a push plate installation schematic.

Fig. 16 is a schematic view of the working principle of the second tooth.

Fig. 17 is a schematic view of the working principle of the first tooth.

Number designation in the figures: 1. an output shaft; 2. a transmission mechanism; 3. installing a shell; 4. an input shaft; 5. a drive bar; 6. an input shaft hole; 7. supporting the annular groove; 8. installing an annular groove; 9. barbed strips; 10. a drive gear; 11. installing an inner shell; 12. a V-shaped groove; 13. an arc-shaped guide groove; 14. a square guide groove; 15. a support shaft hole; 16. a gear mounting groove; 17. extruding the arc block; 18. a first gear; 19. a second annular column; 20. triggering an arc plate; 21. a first gear shaft; 22. a third annular column; 23. a fourth gear; 24. a fifth gear; 25. a sixth gear; 26. a second gear shaft; 27. an arc-shaped conducting bar; 28. a guide bar mounting plate; 29. a square guide block; 30. a third gear shaft; 31. a first tooth; 32. a second tooth; 33. a C-shaped elastic strip; 34. and pushing the plate.

Detailed Description

As shown in fig. 1, it comprises an output shaft 1, a transmission mechanism 2, a mounting outer shell 3, an input shaft 4, a driving strip 5, an input shaft hole 6, a supporting ring groove 7, a mounting ring groove 8, a barb strip 9, a driving gear 10, a mounting inner shell 11, a V-shaped groove 12, an arc-shaped guide groove 13, a C-shaped elastic strip 33, a pushing plate 34, a square guide groove 14, a supporting shaft hole 15 and a gear mounting groove 16, wherein as shown in fig. 3, the inner side of the mounting outer shell 3 is provided with the supporting ring groove 7 and the mounting ring groove 8; the center of the side surface of the mounting annular groove 8 is provided with a through input shaft hole 6; the output shaft 1 is arranged on the outer side surface of the mounting shell 3 and is close to the support ring groove 7; as shown in fig. 2, three driving strips 5 are uniformly arranged on the circular surface of the mounting annular groove 8 in the circumferential direction; as shown in fig. 4, six barbed strips 9 are symmetrically arranged on two sides of each of the three driving strips 5; the mounting inner shell 11 is provided with a supporting shaft hole 15; the inner side of the mounting inner shell 11 is provided with a gear mounting groove 16; as shown in fig. 7, three V-shaped grooves 12 are uniformly formed in the circumferential direction on the outer circumferential surface of one end of the inner housing 11; as shown in fig. 8, the fan-shaped side surfaces of the three V-shaped grooves 12 are symmetrically provided with two arc-shaped guide grooves 13; two side surfaces of the three V-shaped grooves 12, which are internally provided with the arc-shaped guide grooves 13, are symmetrically provided with two square guide grooves 14, and the two square guide grooves 14 are respectively positioned at the outer sides of the two corresponding arc-shaped guide grooves 13; as shown in fig. 5, the mounting inner shell 11 is mounted in the mounting outer shell 3 through the matching of the outer circular surface of the end without the V-shaped groove 12 and the supporting annular groove 7 on the mounting outer shell 3; as shown in fig. 6, the input shaft 4 is mounted in the support shaft hole 15; the driving gear 10 is installed on the input shaft 4, and the driving gear 10 is located in the gear installation groove 16; as shown in fig. 6, three transmission mechanisms 2 are uniformly arranged on the outer circumferential surface of the driving gear 10 in the circumferential direction, and the three transmission mechanisms 2 are respectively located in three V-shaped grooves 12; the three transmission mechanisms 2 are respectively matched with the three driving strips 5; as shown in fig. 15, one end of the C-shaped elastic strip 33 is mounted on the outer side surface of the mounting inner case 11; one end of the push plate 34 is mounted on the input shaft 4; the other end of the pushing plate 34 is matched with the other end of the C-shaped elastic strip 33; the C-shaped elastic strip 33 and the push plate 34 are both located inside the mounting annular groove 8 on the mounting housing 3.

As shown in fig. 9, the transmission mechanism 2 includes an extrusion arc block 17, a first gear 18, a second annular column 19, a trigger arc plate 20, a first gear shaft 21, a third annular column 22, a fourth gear 23, a fifth gear 24, a sixth gear 25, a second gear shaft 26, an arc-shaped guide bar 27, a guide bar mounting plate 28, a square guide block 29, a third gear shaft 30, a first tooth 31, and a second tooth 32, wherein one end of the second gear shaft 26 is mounted on a side wall of the V-shaped groove 12 as shown in fig. 13; a fifth gear 24 is mounted on the other end of the second gear shaft 26; the fifth gear 24 is meshed with the driving gear 10; a sixth gear 25 is arranged on the second gear shaft 26 through an overload limiter and is positioned between the fifth gear 24 and the corresponding side wall of the V-shaped groove 12; one end of the first gear shaft 21 is arranged on the side wall of the V-shaped groove 12; the first gear 18 is mounted on the other end of the first gear shaft 21; the first gear 18 meshes with the sixth gear 25; as shown in fig. 14, the second annular pillar 19 has a second tooth 32 on the outer circumferential surface; the second annular column 19 is arranged on the first gear shaft 21 and is positioned between the first gear 18 and the corresponding side wall of the V-shaped groove 12; as shown in fig. 11, one end of the third gear shaft 30 is mounted on the side wall of the V-groove 12; the fourth gear 23 is mounted on the other end of the third gear shaft 30; the fourth gear 23 is meshed with the driving gear 10; as shown in fig. 12, the third annular pillar 22 has a section of the first teeth 31 on the outer circumferential surface; the third annular column 22 is installed on the third gear shaft 30 and is positioned between the fourth gear 23 and the corresponding side wall of the V-shaped groove 12; as shown in fig. 10, a guide bar mounting plate 28 is mounted at one end of the trigger arc plate 20; the lower side of the guide bar mounting plate 28 is provided with teeth; an arc-shaped guide bar 27 is arranged on one side of the guide bar mounting plate 28; the two trigger arc plates 20 are arranged in the V-shaped groove 12 through the matching of the corresponding arc guide strips 27 and the two arc guide grooves 13 on the corresponding V-shaped groove 12; the two trigger arc plates 20 are respectively matched with a first tooth 31 on the third annular column 22 and a second tooth 32 on the second annular column 19 through teeth on the guide bar mounting plate 28; two square guide blocks 29 are symmetrically arranged on two sides of the extrusion arc block 17; the two extrusion arc blocks 17 are respectively installed in the corresponding V-shaped grooves 12 through the matching of the two square guide blocks 29 on the two extrusion arc blocks and the two square guide grooves 14 on the corresponding V-shaped grooves 12, and the two extrusion arc blocks 17 are positioned on the upper sides of the two guide strip installation plates 28; the two extrusion arc blocks 17 are respectively matched with the two trigger arc plates 20.

The limiting force of the overload limiter is larger than the load force on the second gear shaft 26 during transmission.

The three groups of extrusion arc blocks 17 positioned in the three V-shaped grooves 12 are respectively matched with the three driving strips 5.

The two arc-shaped guide strips 27 corresponding to the two trigger arc plates 20 are matched with the two arc-shaped guide grooves 13 on the corresponding V-shaped groove 12, so that the two corresponding trigger arc plates 20 can slide along the corresponding arc-shaped guide grooves 13; meanwhile, the trigger arc plate 20 can not be separated from the constraint of the arc guide groove 13; so that the two trigger arc plates 20 are always tightly attached to the side wall surfaces of the corresponding V-shaped grooves 12.

The two arc-shaped guide grooves 13 corresponding to the two trigger arc plates 20 limit the two trigger arc plates 20; so that the two trigger arc plates 20 can only move towards one side of the corresponding driving bar 5; the two square guide grooves 14 corresponding to the extrusion arc block 17 play a role in limiting the extrusion arc block 17; so that the two squeezing arc blocks 17 can move only towards one side of the corresponding driving bar 5.

The three driving strips 5 are respectively positioned among the three groups of extrusion arc blocks 17 in the three V-shaped grooves 12 in the initial state; the barb strips 9 on the three driving strips 5 are respectively in friction fit with the three groups of extrusion arc blocks 17.

The barbed strips 9 have elasticity.

The second teeth 32 on the second annular post 19 in the initial state engage with the teeth on the corresponding guide bar mounting plate 28; when the input shaft 4 rotates counterclockwise; at an angle, the second teeth 32 on the second annular post 19 are always in engagement with the teeth on the corresponding guide bar mounting plate 28.

The first teeth 31 on the third annular post 22 are not engaged with the teeth on the corresponding guide bar mounting plate 28 in the initial state; when the input shaft 4 rotates counterclockwise; after a certain angle, the first tooth 31 on the third annular post 22 is in engagement with the tooth under the corresponding guide bar mounting plate 28.

When the input shaft 4 rotates counterclockwise in the initial state; the angle of engagement of the second teeth 32 on the second annular post 19 with the teeth on the corresponding guide bar mounting plate 28 is the same as the angle of counterclockwise rotation of the input shaft 4 before engagement of the first teeth 31 on the third annular post 22 with the teeth on the corresponding guide bar mounting plate 28.

The elastic limit of the elastic arc-shaped strip is matched with the length of the first tooth 31 on the third annular column 22.

In summary, the following steps:

the clutch designed by the invention can not be damaged when the output shaft 1 rotates; the clutch is protected; and simultaneously has the function of a clutch.

The inner side of the mounting shell 3 is provided with a support ring groove 7 and a mounting ring groove 8; the output shaft 1 is arranged on the outer side surface of the mounting shell 3; three driving strips 5 are uniformly arranged on the circular surface of the mounting annular groove 8 in the circumferential direction; six barb strips 9 are symmetrically arranged on two sides of the three driving strips 5; three V-shaped grooves 12 are uniformly formed in the circumferential direction on the outer circular surface at one end of the mounting inner shell 11; the mounting inner shell 11 is mounted in the mounting outer shell 3 through the matching of the outer circular surface at one end without the V-shaped groove 12 and the supporting annular groove 7 on the mounting outer shell 3; the input shaft 4 is arranged in the supporting shaft hole 15; the driving gear 10 is installed on the input shaft 4, and the driving gear 10 is located in the gear installation groove 16; three transmission mechanisms 2 are uniformly arranged on the outer circular surface of the driving gear 10 in the circumferential direction; one end of the C-shaped elastic strip 33 is arranged on the outer side surface of the mounting inner shell 11; one end of the push plate 34 is mounted on the input shaft 4; the other end of the pushing plate 34 is matched with the other end of the C-shaped elastic strip 33; one end of the second gear shaft 26 is arranged on the side wall of the V-shaped groove 12; a fifth gear 24 is mounted on the other end of the second gear shaft 26; the fifth gear 24 is meshed with the driving gear 10; the sixth gear 25 is mounted on the second gear shaft 26; one end of the first gear shaft 21 is arranged on the side wall of the V-shaped groove 12; the first gear 18 is mounted on the other end of the first gear shaft 21; the first gear 18 meshes with the sixth gear 25; the outer circular surface of the second annular column 19 is provided with a section of second tooth 32; the second annular column 19 is mounted on the first gear shaft 21; one end of the third gear shaft 30 is mounted on the side wall of the V-shaped groove 12; the fourth gear 23 is mounted on the other end of the third gear shaft 30; the fourth gear 23 is meshed with the driving gear 10; the outer circular surface of the third annular column 22 is provided with a section of first teeth 31; the third annular column 22 is mounted on a third gear shaft 30; one end of the trigger arc plate 20 is provided with a guide bar mounting plate 28; the lower side of the guide bar mounting plate 28 is provided with teeth; the two trigger arc plates 20 are arranged in the V-shaped groove 12 through the matching of the corresponding arc guide strips 27 and the two arc guide grooves 13 on the corresponding V-shaped groove 12; the two extrusion arc blocks 17 are respectively installed in the corresponding V-shaped grooves 12 through the matching of the two square guide blocks 29 on the two extrusion arc blocks and the two square guide grooves 14 on the corresponding V-shaped grooves 12, and the two extrusion arc blocks 17 are positioned on the upper sides of the two guide strip installation plates 28; the two extrusion arc blocks 17 are respectively matched with the two trigger arc plates 20; in the initial state, the three driving strips 5 are respectively positioned among the three groups of extrusion arc blocks 17 in the three V-shaped grooves 12; the barb strips 9 on the three driving strips 5 are respectively in friction fit with the three groups of extrusion arc blocks 17. The elastic limit of the elastic arc-shaped strip in the present invention matches the length of the first tooth 31 on the third annular post 22. As shown in fig. 16a, when the input shaft 4 rotates counterclockwise; the input shaft 4 drives the driving gear 10 to rotate; the rotation of the driving gear 10 drives the fourth gear 23 and the fifth gear 24 to rotate respectively; the rotation of the fifth gear 24 drives the second gear shaft 26 to rotate; the second gear shaft 26 rotates to drive the sixth gear 25 to rotate; the sixth gear 25 rotates to drive the first gear 18 to rotate; the first gear 18 rotates to drive the first gear shaft 21 to rotate; the first gear shaft 21 rotates to drive the second annular column 19 to rotate; as the second teeth 32 on the second annular post 19 engage with the teeth on the corresponding guide bar mounting plate 28 in the initial state; when the input shaft 4 rotates counterclockwise; at an angle, the second teeth 32 on the second annular post 19 are always in engagement with the teeth on the corresponding guide bar mounting plate 28. Meanwhile, the two arc guide grooves 13 corresponding to the two trigger arc plates 20 limit the two trigger arc plates 20; so that the two trigger arc plates 20 can only move towards one side of the corresponding driving bar 5; so within a certain angle; the second ring-shaped column 19 rotates to drive the guide bar mounting plate 28 engaged therewith to move along the arc-shaped guide groove 13 toward the side of the drive bar 5; the guide bar mounting plate 28 moves to drive the corresponding trigger arc plate 20 to move; the two square guide grooves 14 corresponding to the extrusion arc block 17 limit the extrusion arc block 17; so that the two squeezing arc blocks 17 can move only towards one side of the corresponding driving bar 5. The trigger arc plate 20 moves to drive the corresponding extrusion arc block 17 to move; as shown in fig. 16b, the movement of the pressing arc block 17 presses the barbed strip 9 on the corresponding driving strip 5; as shown in fig. 17a, the fourth gear 23 rotates at the same time to drive the third gear shaft 30 to rotate; the third gear shaft 30 rotates to drive the third annular column 22 to rotate; since the first teeth 31 on the third annular post 22 are not engaged with the teeth on the corresponding guide bar mounting plate 28 in the initial state; the third annular post 22 rotates without moving its corresponding guide bar mounting plate 28; i.e. the corresponding trigger arc plate 20 does not move; so that the corresponding pressing arc block 17 does not move; when the compressed barb strip 9 reaches a limit; the end of the second tooth 32 on the second annular column 19 and the corresponding tooth on the lower side of the guide bar mounting plate 28 also reach the limit disengagement state; i.e. the second annular column 19 is in the blocked state; the second annular column 19 is in a locked state so that the first gear shaft 21 is in a locked state; the first gear shaft 21 is in a jammed state so that the first gear 18 is in a jammed state; the first gear 18 is in a jammed state so that the sixth gear 25 is in a jammed state; and the second drive gear shaft 26 driving the sixth gear 25 is always in a rotating state; the sixth gear 25 is mounted on the second gear shaft 26 through an overload limiter in the present invention; the limiting force of the overload limiter is greater than the load force on the second gear shaft 26 during transmission. The sixth gear 25 is always in a locked state by the overload limiter under the driving of the second gear shaft 26. Meanwhile, when the input shaft 4 rotates, the push plate 34 is driven to rotate; since the input shaft 4 is rotating counterclockwise; after a certain angle, the first tooth 31 on the third annular column 22 is in a meshing state with the tooth under the corresponding guide bar mounting plate 28, and when the input shaft 4 rotates counterclockwise in the initial state; the angle of engagement of the second teeth 32 on the second annular post 19 with the teeth on the corresponding guide bar mounting plate 28 is the same as the angle of counterclockwise rotation of the input shaft 4 before engagement of the first teeth 31 on the third annular post 22 with the teeth on the corresponding guide bar mounting plate 28. So when the compressed barb strip 9 reaches a limit; as shown in fig. 17b, the first tooth 31 on the third annular post 22 is just engaged with the tooth under the corresponding guide bar mounting plate 28; meanwhile, the pushing plate 34 is just contacted with the C-shaped elastic strip 33 in the rotating process; at this time, the third annular column 22 rotates to drive the corresponding guide bar mounting plate 28 to move towards the side close to the driving bar 5; the guide bar mounting plate 28 moves to drive the corresponding trigger arc plate 20 to move; the trigger arc plate 20 moves to drive the corresponding extrusion arc block 17 to move; as shown in fig. 17c, the movement of the pressing arc block 17 presses the barbed strip 9 on the corresponding driving strip 5; in the process, the pushing plate 34 rotates to compress the C-shaped elastic strip 33; when the load on the output shaft 1 is small and the third annular post 22 is not rotated by such an angle that the first teeth 31 on the third annular post 22 are disengaged from the corresponding teeth on the lower side of the guide bar mounting plate 28; meanwhile, the pushing plate 34 compresses the C-shaped elastic strip 33, so that the C-shaped elastic strip 33 can not drive the mounting inner shell 11 to rotate; but the extrusion block corresponding to the third annular column 22 will drive the driving strip 5 to rotate around the axis of the input shaft 4; thereby driving the mounting housing 3 to rotate; the mounting shell 3 rotates to drive the output shaft 1 to rotate; namely, the input shaft 4 drives the output shaft 1 to rotate; when the load on the output shaft 1 is large and the third annular post 22 is rotated by such an angle that the first teeth 31 on the third annular post 22 are disengaged from the corresponding teeth on the underside of the guide bar mounting plate 28; as shown in fig. 17d, i.e. the forced barbed strips 9 corresponding to the third annular column 22 are just reaching the limit; simultaneously, the pushing plate 34 compresses the C-shaped elastic strip 33 to enable the C-shaped elastic strip 33 to reach the limit; the pushing plate 34 drives the inner mounting shell 11 to rotate; the end of the first tooth 31 on the third annular column 22 is just disengaged from the tooth on the lower side of the corresponding guide bar mounting plate 28; the trigger arc plate 20 drives the corresponding guide bar mounting plate 28 to move reversely under the action of the elastic force of the corresponding barb bar 9; the reverse movement of the guide bar mounting plate 28 will cause the corresponding third annular post 22 to rotate in the reverse direction; however, the third annular post 22 rotates in the opposite direction so that the teeth on the underside of the corresponding guide bar mounting plate 28 re-engage with the first teeth 31 on the corresponding third annular post 22; the guide bar mounting plate 28 is moved to the side close to the drive bar 5 by the teeth on the lower side of the guide bar mounting plate 28 being engaged again with the first teeth 31 on the corresponding third annular post 22; and the guide bar mounting plate 28 moves so that the end of the first tooth 31 on the corresponding third annular post 22 disengages from the tooth on the lower side of the corresponding guide bar mounting plate 28; the corresponding trigger arc plate 20 can be limited by matching the teeth on the second annular column 19 with the corresponding guide bar mounting plate 28; the pushing plate 34 compresses the C-shaped elastic strip 33 in the process, so that the C-shaped elastic strip 33 reaches the limit; the pushing plate 34 drives the inner mounting shell 11 to rotate; meanwhile, when the clamping force of the two extrusion blocks on the driving strip 5 is larger than the load on the output shaft 1; the clamping force of the two extrusion blocks on the driving strip 5 drives the driving strip 5 to rotate around the axis of the input shaft 4; thereby driving the mounting housing 3 to rotate; the mounting shell 3 rotates to drive the output shaft 1 to rotate; i.e. the input shaft 4 will drive the output shaft 1 to rotate. When the clamping force of the two squeezing blocks on the driving strip 5 is smaller than the load on the output shaft 1; the driving strip 5 is separated from the constraint of the two corresponding extrusion blocks; at this time, the input shaft 4 does not drive the output shaft 1 to rotate. The motor is prevented from being burnt out due to overlarge load. When the output shaft rotates; the output shaft rotates to drive the mounting shell 3 to rotate; if the load on the input shaft is large; the rotation of the mounting shell 3 can make the driving strip 5 be separated from the constraint of the corresponding extrusion block; at the moment, the output shaft 1 does not influence the input shaft 4; if the load on the input shaft is small; the rotation of the mounting shell 3 can enable the driving strip 5 to drive the corresponding extrusion block to rotate; and then the output shaft 1 is driven to rotate by the sequential transmission of the extrusion blocks.

The specific implementation mode is as follows: when one uses the clutch designed by the invention; when the input shaft 4 rotates counterclockwise; the input shaft 4 drives the driving gear 10 to rotate; the rotation of the driving gear 10 drives the fourth gear 23 and the fifth gear 24 to rotate respectively; the rotation of the fifth gear 24 drives the second gear shaft 26 to rotate; the second gear shaft 26 rotates to drive the sixth gear 25 to rotate; the sixth gear 25 rotates to drive the first gear 18 to rotate; the first gear 18 rotates to drive the first gear shaft 21 to rotate; the first gear shaft 21 rotates to drive the second annular column 19 to rotate; as the second teeth 32 on the second annular post 19 engage with the teeth on the corresponding guide bar mounting plate 28 in the initial state; when the input shaft 4 rotates counterclockwise; at an angle, the second teeth 32 on the second annular post 19 are always in engagement with the teeth on the corresponding guide bar mounting plate 28. Meanwhile, the two arc guide grooves 13 corresponding to the two trigger arc plates 20 limit the two trigger arc plates 20; so that the two trigger arc plates 20 can only move towards one side of the corresponding driving bar 5; so within a certain angle; the second ring-shaped column 19 rotates to drive the guide bar mounting plate 28 engaged therewith to move along the arc-shaped guide groove 13 toward the side of the drive bar 5; the guide bar mounting plate 28 moves to drive the corresponding trigger arc plate 20 to move; the two square guide grooves 14 corresponding to the extrusion arc block 17 limit the extrusion arc block 17; so that the two squeezing arc blocks 17 can move only towards one side of the corresponding driving bar 5. The trigger arc plate 20 moves to drive the corresponding extrusion arc block 17 to move; the extrusion arc block 17 moves to press the barb strip 9 on the corresponding driving strip 5; meanwhile, the fourth gear 23 rotates to drive the third gear shaft 30 to rotate; the third gear shaft 30 rotates to drive the third annular column 22 to rotate; since the first teeth 31 on the third annular post 22 are not engaged with the teeth on the corresponding guide bar mounting plate 28 in the initial state; the third annular post 22 rotates without moving its corresponding guide bar mounting plate 28; i.e. the corresponding trigger arc plate 20 does not move; so that the corresponding pressing arc block 17 does not move; when the compressed barb strip 9 reaches a limit; the end of the second tooth 32 on the second annular column 19 and the corresponding tooth on the lower side of the guide bar mounting plate 28 also reach the limit disengagement state; i.e. the second annular column 19 is in the blocked state; the second annular column 19 is in a locked state so that the first gear shaft 21 is in a locked state; the first gear shaft 21 is in a jammed state so that the first gear 18 is in a jammed state; the first gear 18 is in a jammed state so that the sixth gear 25 is in a jammed state; and the second drive gear shaft 26 driving the sixth gear 25 is always in a rotating state; the sixth gear 25 is mounted on the second gear shaft 26 through an overload limiter in the present invention; the limiting force of the overload limiter is greater than the load force on the second gear shaft 26 during transmission. The sixth gear 25 is always in a locked state by the overload limiter under the driving of the second gear shaft 26. Meanwhile, when the input shaft 4 rotates, the push plate 34 is driven to rotate; since the input shaft 4 is rotating counterclockwise; after a certain angle, the first tooth 31 on the third annular column 22 is in a meshing state with the tooth under the corresponding guide bar mounting plate 28, and when the input shaft 4 rotates counterclockwise in the initial state; the angle of engagement of the second teeth 32 on the second annular post 19 with the teeth on the corresponding guide bar mounting plate 28 is the same as the angle of counterclockwise rotation of the input shaft 4 before engagement of the first teeth 31 on the third annular post 22 with the teeth on the corresponding guide bar mounting plate 28. So when the compressed barb strip 9 reaches a limit; the first teeth 31 on the third annular column 22 are just engaged with the teeth under the corresponding guide bar mounting plate 28; meanwhile, the pushing plate 34 is just contacted with the C-shaped elastic strip 33 in the rotating process; at this time, the third annular column 22 rotates to drive the corresponding guide bar mounting plate 28 to move towards the side close to the driving bar 5; the guide bar mounting plate 28 moves to drive the corresponding trigger arc plate 20 to move; the trigger arc plate 20 moves to drive the corresponding extrusion arc block 17 to move; the extrusion arc block 17 moves to press the barb strip 9 on the corresponding driving strip 5; in the process, the pushing plate 34 rotates to compress the C-shaped elastic strip 33; when the third annular post 22 is rotated by an angle such that the first teeth 31 on the third annular post 22 disengage from the corresponding teeth on the underside of the guide bar mounting plate 28; i.e. the forced barbed strips 9 corresponding to the third annular post 22 just reach the limit; simultaneously, the pushing plate 34 compresses the C-shaped elastic strip 33 to enable the C-shaped elastic strip 33 to reach the limit; the pushing plate 34 drives the inner mounting shell 11 to rotate; the end of the first tooth 31 on the third annular column 22 is just disengaged from the tooth on the lower side of the corresponding guide bar mounting plate 28; the trigger arc plate 20 drives the corresponding guide bar mounting plate 28 to move reversely under the action of the elastic force of the corresponding barb bar 9; the reverse movement of the guide bar mounting plate 28 will cause the corresponding third annular post 22 to rotate in the reverse direction; however, the third annular post 22 rotates in the opposite direction so that the teeth on the underside of the corresponding guide bar mounting plate 28 re-engage with the first teeth 31 on the corresponding third annular post 22; the guide bar mounting plate 28 is moved to the side close to the drive bar 5 by the teeth on the lower side of the guide bar mounting plate 28 being engaged again with the first teeth 31 on the corresponding third annular post 22; and the guide bar mounting plate 28 moves so that the end of the first tooth 31 on the corresponding third annular post 22 disengages from the tooth on the lower side of the corresponding guide bar mounting plate 28; the corresponding trigger arc plate 20 can be limited by matching the teeth on the second annular column 19 with the corresponding guide bar mounting plate 28; the pushing plate 34 compresses the C-shaped elastic strip 33 in the process, so that the C-shaped elastic strip 33 reaches the limit; the pushing plate 34 drives the inner mounting shell 11 to rotate; meanwhile, when the clamping force of the two extrusion blocks on the driving strip 5 is larger than the load on the output shaft 1; the clamping force of the two extrusion blocks on the driving strip 5 drives the driving strip 5 to rotate around the axis of the input shaft 4; thereby driving the mounting housing 3 to rotate; the mounting shell 3 rotates to drive the output shaft 1 to rotate; i.e. the input shaft 4 will drive the output shaft 1 to rotate.

Claims

1. A clutch, characterized in that: the device comprises an output shaft, a transmission mechanism, an installation shell, an input shaft, a driving strip, an input shaft hole, a supporting annular groove, an installation annular groove, a barb strip, a driving gear, an installation inner shell, a V-shaped groove, an arc-shaped guide groove, a C-shaped elastic strip, a pushing plate, a square guide groove, a supporting shaft hole and a gear installation groove, wherein the supporting annular groove and the installation annular groove are arranged on the inner side of the installation shell; the center of the side surface of the mounting annular groove is provided with a through input shaft hole; the output shaft is arranged on the outer side surface of the mounting shell and is close to the support ring groove; three driving strips are uniformly arranged on the circular surface of the mounting annular groove in the circumferential direction; six barb strips are symmetrically arranged on two sides of each of the three driving strips; the mounting inner shell is provided with a supporting shaft hole; the inner side of the mounting inner shell is provided with a gear mounting groove; three V-shaped grooves are uniformly formed in the circumferential direction on the outer circular surface at one end where the inner shell is installed; the fan-shaped side surfaces of the three V-shaped grooves are symmetrically provided with two arc-shaped guide grooves; two side surfaces of the three V-shaped grooves, which are internally provided with the arc-shaped guide grooves, are symmetrically provided with two square guide grooves, and the two square guide grooves are respectively positioned at the outer sides of the two corresponding arc-shaped guide grooves; the mounting inner shell is mounted in the mounting outer shell through the matching of an outer circular surface at one end which is not provided with the V-shaped groove and a supporting annular groove on the mounting outer shell; the input shaft is arranged in the supporting shaft hole; the driving gear is arranged on the input shaft and is positioned in the gear mounting groove; three transmission mechanisms are uniformly arranged on the outer circular surface of the driving gear in the circumferential direction and are respectively positioned in the three V-shaped grooves; the three transmission mechanisms are respectively matched with the three driving strips; one end of the C-shaped elastic strip is arranged on the outer side surface of the mounting inner shell; one end of the pushing plate is arranged on the input shaft; the other end of the pushing plate is matched with the other end of the C-shaped elastic strip; the C-shaped elastic strip and the pushing plate are both positioned on the inner side of the mounting annular groove on the mounting shell;

the transmission mechanism comprises an extrusion arc block, a first gear, a second annular column, a trigger arc plate, a first gear shaft, a third annular column, a fourth gear, a fifth gear, a sixth gear, a second gear shaft, an arc-shaped guide strip, a guide strip mounting plate, a square guide block, a third gear shaft, a first tooth and a second tooth, wherein one end of the second gear shaft is mounted on the side wall of the V-shaped groove; the fifth gear is arranged at the other end of the second gear shaft; the fifth gear is meshed with the driving gear; the sixth gear is arranged on the second gear shaft through an overload limiter and is positioned between the fifth gear and the corresponding side wall of the V-shaped groove; one end of the first gear shaft is arranged on the side wall of the V-shaped groove; the first gear is arranged at the other end of the first gear shaft; the first gear is meshed with the sixth gear; a section of second tooth is arranged on the outer circular surface of the second annular column; the second annular column is arranged on the first gear shaft and is positioned between the first gear and the corresponding side wall of the V-shaped groove; one end of the third gear shaft is arranged on the side wall of the V-shaped groove; the fourth gear is arranged at the other end of the third gear shaft; the fourth gear is meshed with the driving gear; a section of first tooth is arranged on the outer circular surface of the third annular column; the third annular column is arranged on the third gear shaft and is positioned between the fourth gear and the corresponding side wall of the V-shaped groove; one end of the trigger arc plate is provided with a guide bar mounting plate; the lower side of the guide bar mounting plate is provided with teeth; one side of the guide bar mounting plate is provided with an arc-shaped guide bar; the two trigger arc plates are arranged in the V-shaped groove through the matching of the arc guide strips corresponding to the two trigger arc plates and the two arc guide grooves on the corresponding V-shaped groove; the two trigger arc plates are respectively matched with first teeth on the third annular column and second teeth on the second annular column through teeth on the guide bar mounting plate; two sides of the extrusion arc block are symmetrically provided with two square guide blocks; the two extrusion arc blocks are respectively installed in the corresponding V-shaped grooves through the matching of the two square guide blocks on the two extrusion arc blocks and the two square guide grooves on the corresponding V-shaped grooves, and the two extrusion arc blocks are positioned on the upper sides of the two guide strip installation plates; the two extrusion arc blocks are respectively matched with the two trigger arc plates;

the limiting force of the overload limiter is larger than the load force on the second gear shaft in the transmission process;

the three groups of extrusion arc blocks positioned in the three V-shaped grooves are respectively matched with the three driving strips;

the two arc-shaped guide strips corresponding to the two trigger arc plates are matched with the two arc-shaped guide grooves on the corresponding V-shaped grooves, so that the two corresponding trigger arc plates can slide along the corresponding arc-shaped guide grooves; meanwhile, the trigger arc plate can not be separated from the constraint of the arc guide groove; so that the two trigger arc plates are always tightly attached to the side wall surfaces of the corresponding V-shaped grooves;

the two arc guide grooves corresponding to the two trigger arc plates play a role in limiting the two trigger arc plates; so that the two trigger arc plates can only move towards one side of the corresponding driving strip; the two square guide grooves corresponding to the extrusion arc block play a role in limiting the extrusion arc block; so that the two extrusion arc blocks can only move towards one side of the corresponding driving strip;

in the initial state, the three driving strips are respectively positioned among the three groups of extrusion arc blocks in the three V-shaped grooves; the barb strips on the three driving strips are respectively in friction fit with the three groups of extrusion arc blocks.

2. A clutch according to claim 1, wherein: the barb strip has elasticity.

3. A clutch according to claim 1, wherein: the second teeth on the second annular column are meshed with the teeth under the corresponding guide bar mounting plate in the initial state; when the input shaft rotates counterclockwise; and in a certain angle, the second teeth on the second annular column are always meshed with the teeth under the corresponding guide bar mounting plate.

4. A clutch according to claim 1, wherein: the first teeth on the third annular column are not meshed with the teeth under the corresponding guide bar mounting plate in the initial state; when the input shaft rotates counterclockwise; after a certain angle, the first teeth on the third annular column are meshed with the teeth under the corresponding guide bar mounting plate.

5. A clutch according to claim 1, wherein: when the input shaft rotates counterclockwise in the initial state; the meshing angle of the second teeth on the second annular column and the teeth under the corresponding guide bar mounting plate is the same as the counterclockwise rotation angle of the input shaft before the first teeth on the third annular column and the teeth under the corresponding guide bar mounting plate are meshed.

6. A clutch according to claim 1, wherein: the elastic limit of the elastic arc-shaped strip is matched with the length of the first tooth on the third annular column.