Clutch connecting structure

Abstract

The utility model discloses a clutch connecting structure, which belongs to the field of motorcycle structures and comprises a clutch component, the clutch component is mounted on one side of an engine cylinder body, the clutch component comprises a clutch controller and a clutch outer cover, the clutch component is arranged towards the middle of the engine cylinder body relative to the clutch outer cover, and the clutch controller is connected with the clutch outer cover. The clutch assembly is arranged towards the middle of the engine cylinder body relative to the clutch outer cover, so that the clutch can be contained in an unoccupied space above the engine cylinder body, the space utilization rate of a motorcycle body is improved, the axial space of the clutch cannot be increased, the motorcycle body structure is more compact, and the problem that in the prior art, the clutch assembly is not prone to being damaged is solved. And a clutch connecting structure can greatly influence the overall width of the motorcycle.

Description

TECHNICAL FIELD

[0001] The utility model relates to a motorcycle structure, especially a clutch connecting structure. BACKGROUND

[0002] In the prior art, the clutch side structure of a motorcycle and the connecting structure of the clutch separation rod occupy a large space, which can cause the clutch structure to protrude on the side of the motorcycle, so that the overall width of the motorcycle is large, and therefore the clutch connecting structure needs to be optimized to reduce its size in the width direction.

[0003] For example, a motorcycle clutch control device disclosed in Chinese patent documents, with the publication number CN2876429Y, is composed of a linear motor and a sensing element. The linear motor is connected with an engine housing. The sensing element includes an inductive magnet and a displacement sensor. The middle part of the linear motor has a screw shaft. One end of the screw shaft is provided with the inductive magnet. The other end of the screw shaft is in contact with the clutch top rod of the engine housing through the clutch top rod. The top end of the screw shaft has a concave arc shape that is tightly in contact with the clutch top rod. The housing of the linear motor is provided with the displacement sensor at the position corresponding to the inductive magnet. The displacement sensor and the linear motor are connected with a microcomputer control system. The deficiency of the patent is that the control structure is a linear motor, and the linear motor is installed in the axial direction of the clutch, which occupies the space in the axial direction of the clutch, and can cause the entire clutch structure to protrude from the motorcycle body, thereby increasing the overall width of the motorcycle. SUMMARY

[0004] The utility model is to overcome the problem that the clutch connecting structure can greatly affect the overall width of the motorcycle in the prior art, and provides a clutch connecting structure, which can occupy less space in the axial direction of the clutch, thereby making the motorcycle body structure more compact.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] The utility model discloses a clutch connecting structure, which comprises a clutch assembly installed on an engine, wherein the clutch assembly comprises a clutch actuating mechanism and a clutch cover, the clutch actuating mechanism is located at the rear side of the cylinder block of the engine, and the clutch actuating mechanism is arranged towards the middle part of the engine relative to the clutch cover.

[0007] Since the engine of a general motorcycle is in an L-shaped structure in the side direction, the upper part of the L-shaped structure is provided with the cylinder block of the engine. In the present application, the clutch actuating mechanism is arranged at the rear side of the cylinder block of the engine, so that it can be accommodated in the empty space above the engine, thereby improving the space utilization of the vehicle body and making the clutch connecting structure occupy less space in the axial direction of the clutch.

[0008] As a preferred, the clutch actuator is located above the clutch housing, and the side surface of the clutch housing is flush with the outer side surface of the clutch actuator.

[0009] As a preferred, the clutch assembly further comprises a main shaft, the clutch actuator and the main shaft are connected through a connecting assembly, the clutch actuator comprises a control shaft, the control shaft is provided with a thread, the connecting assembly comprises a separation rod which is arranged perpendicularly to the control shaft, the separation rod is provided with a transmission part, the transmission part comprises a sector transmission part, and the sector transmission part is provided with a transmission surface which is engaged with the control shaft. In the application, the separation rod which is arranged perpendicularly to the control shaft is used for transmission, so that the axial space of the clutch actuator is avoided, and the control shaft is further transmitted through the sector transmission part, so that the space occupied by the clutch in the axial direction is reduced.

[0010] As a preferred, the connecting assembly comprises a connecting housing, the connecting housing is provided with a transmission cavity, and the transmission part is located in the transmission cavity. The connecting housing can protect the connecting part.

[0011] As a preferred, the sector transmission part comprises a radial surface and an arc-shaped transmission surface, and the transmission cavity is provided with a limiting surface. The limiting surface can limit the rotation amplitude of the transmission part.

[0012] As a preferred, the arc of the arc-shaped surface is less than 180°, and in the case that the arc of the arc-shaped surface is less than 180°, the overall size of the transmission part is close to the radius of the sector transmission part.

[0013] As a preferred, the limiting surface is provided with a buffer pad, and the buffer pad can buffer when the sector transmission part is limited.

[0014] As a preferred, the outer side surface of the connecting housing is flush with the outer side surface of the engine housing.

[0015] As a preferred, the clutch assembly further comprises a clutch housing, and the connecting housing and the clutch housing are connected through a connecting seat.

[0016] As a preferred, the connecting seat comprises a main hole and a plurality of connecting holes, and the connecting housing and the engine housing are connected through connecting bolts which pass through the connecting holes.

[0017] As a preferred, the connecting holes are connected with the main hole through reinforcing ribs. The reinforcing ribs can improve the structural strength of the connecting seat.

[0018] Therefore, the utility model has following beneficial effect: (1) through the transmission of the separation rod which is perpendicular to the control shaft, the axial space of the clutch actuator clutch is avoided; (2) the connecting structure can be protected by the shell, and the transmission part is limited; (3) the connecting seat has high strength. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the utility model.

[0020] Figure 2 It is a structural schematic view of the clutch actuator of the utility model.

[0021] Figure 3 It is a sectional view of the clutch actuator of the utility model from a front view angle.

[0022] Figure 4 It is a sectional view of the clutch actuator of the utility model from a top view angle.

[0023] Figure 5 It is a structural schematic view of the clutch cover of the utility model.

[0024] Figure 6 It is a sectional view of the clutch actuator of the utility model from a top view angle.

[0025] Figure 7 It is a sectional view of the clutch actuator of the utility model from a top view angle.

[0026] In the figure: clutch actuator 1 clutch cover 3 control shaft 4 controller housing 5 separation rod 6 transmission part 7 fan-shaped transmission part 8 transmission installation part 9 connecting place shell 10 transmission cavity 11 limiting surface 12 connecting seat 13 installation bolt 14 fastening bolt 15 reinforcing rib 16 inclined rib 17 sealing ring 18 shaft coupling transmission part 19 shaft coupling transmission groove 20 engine 21 engine cylinder block 22. DETAILED DESCRIPTION

[0027] The utility model is further described below in combination with the drawings and specific embodiments.

[0028] Embodiment one, as Figures 1-5As shown, a clutch connecting structure, comprising a clutch assembly, the clutch assembly is installed on one side of the engine 21, the clutch assembly comprises a clutch actuator 1, a main shaft and a clutch housing 3. The clutch actuator 1 is located on the rear side of the cylinder block of the engine, and the clutch actuator 1 is arranged towards the middle part of the engine 21 relative to the clutch housing 3, and the middle part here refers to the position of the clutch actuator 1 closer to the center line of the engine 21 relative to the clutch housing 3. The clutch actuator 1 and the main shaft are connected through a connecting assembly, the clutch actuator 1 comprises a control shaft 4 and a controller housing 5, the control shaft 4 is provided with threads, the connecting assembly comprises a separation rod 6 arranged perpendicular to the control shaft 4, the separation rod 6 is also perpendicular to the main shaft and is engaged with the main shaft. The clutch actuator 1 is located above the clutch housing 3.

[0029] The separation rod 6 is provided with a transmission member 7, and the transmission member 7 and the separation rod 6 can be connected by a key, or can be integrally formed, or other fixed connection modes. The transmission member 7 comprises a fan-shaped transmission part and a transmission mounting part 9, and the fan-shaped transmission part is provided with a transmission surface engaged with the control shaft 4. The fan-shaped transmission part comprises a radial surface and an arc-shaped transmission surface. The arc of the transmission surface is less than 180°, and the transmission surface is provided with transmission teeth. The radial surface has two, which are located on both sides of the transmission surface. The angle between the control shaft 4 and the outer side surface of the clutch housing 3 is 30°-60°, and in this embodiment, the angle is preferably 40°. By tilting, the clutch actuator 1 can occupy more appropriate space in the longitudinal and transverse directions of the horizontal plane, and is not easy to interfere with other structures.

[0030] The connecting assembly comprises a connecting housing 10, and the connecting housing 10 is provided with a transmission cavity 11, and the transmission member 7 is located in the transmission cavity 11. The horizontal cross-sectional shape of the transmission cavity 11 is also a fan shape, and the angle of the fan shape is less than 180°. The transmission cavity 11 is provided with two limiting surfaces 12, and the radial surface can be attached to the limiting surface 12 during the rotation of the transmission member 7. The limiting surface 12 is provided with a flexible material buffer pad.

[0031] The clutch assembly further comprises a clutch cover 3, and the connecting portion housing 10 is connected with the clutch cover 3 through a connecting base 13. The outer side of the connecting portion housing 10 is flush with the outer side of the clutch cover 3. The lower side of the connecting portion housing 10 is the same in profile with the upper side of the connecting base 13, and the connecting portion housing 10 is provided with three through holes, and the connecting base 13 is provided with three connecting holes corresponding to the through holes one by one, and the clutch cover 3 is further provided with screw holes corresponding to the through holes and the connecting holes. During installation, the connecting portion housing 10 and the connecting base 13 are connected on the clutch cover 3 from top to bottom through three mounting bolts 14. The connecting base 13 is further provided with a main hole, the separation rod 6 passes through the main hole, and a reinforcing rib 16 is connected between the connecting hole and the main hole. The connecting portion housing 10 further comprises a housing bottom and a housing wall, and the housing and the housing wall are further provided with an inclined rib 17 for improving the structural strength. In addition, two fastening bolts 15 are installed between the connecting portion housing 10 and the connecting base 13, and the fastening bolts 15 connect the connecting base 13 on the connecting portion housing 10 from bottom to top. The positions of the two fastening bolts 15 are centrally symmetric with respect to the axis of the separation rod 6. During the assembly of the connecting portion housing 10, the connecting base 13 and the clutch cover 3, the connecting portion housing 10 is first connected through the fastening bolts 15, and then the connecting base 13 and the connecting portion housing 10 are installed on the clutch cover 3 through the mounting bolts 14. The lower side of the connecting base 13 is further provided with a cover mounting portion, the inner side of the cover mounting portion is the main control, a sealing ring 18 is installed between the outer side of the cover mounting portion and the clutch cover 3, and a chamfer is processed at the lower end of the cover mounting portion.

[0032] The separation rod 6 comprises a lower rod located in the clutch cover 3 and an upper rod located in the connecting portion housing 10. An upper bearing is installed between the upper rod and the connecting portion housing 10, and a lower bearing is installed between the lower rod and the connecting portion housing 10. The lower end of the upper rod is provided with a shaft coupling transmission portion 19, and the upper end of the lower rod is provided with a shaft coupling transmission groove 20 matched with the shaft coupling transmission portion 19. The shaft coupling transmission portion 19 comprises a plurality of transmission teeth arranged in a circumferential direction, and the length direction of the transmission teeth is the same as the axial direction of the separation rod 6. The transmission teeth in the shaft coupling transmission groove 20 are engaged with the transmission teeth on the shaft coupling transmission portion 19. After the shaft coupling transmission portion 19 and the shaft coupling transmission groove 20 are axially moved and combined, the transmission teeth are used for circumferential limiting and transmission.

[0033] During operation, the control shaft 4 of the clutch actuator 1 rotates. Because the control shaft 4 meshes with the transmission surface on the transmission component 7, the control shaft 4 causes the transmission component 7 to oscillate. The amplitude of this oscillation is determined by the rotation of the control shaft 4 and is limited by the limiting surface 12 in the transmission cavity 11. If the oscillation amplitude is too large, the radial surface of the transmission component 7 will abut against the buffer pad on the limiting surface 12. Since the transmission component 7 and the upper part of the release lever 6 are fixedly connected, when the transmission component 7 oscillates, it also causes the release lever 6 to rotate. The release lever 6 meshes with the main shaft, and when the release lever 6 rotates, it also causes the main shaft to rotate, thus achieving clutch control.

[0034] Example 2, as Figure 6 As shown, a clutch connection structure includes a clutch assembly mounted on one side of an engine 21. The clutch assembly includes a clutch actuator 1, a main shaft, and a clutch housing 3. The clutch actuator 1 is located behind the engine cylinder block and is positioned relative to the clutch housing 3 towards the center of the engine 21. Here, "center" refers to the position where the clutch actuator 1 is closer to the centerline of the engine 21 relative to the clutch housing 3. The clutch actuator 1 and the main shaft are connected by a connecting assembly. The clutch actuator 1 includes a control shaft 4 and a controller housing 5. The control shaft 4 is threaded. The connecting assembly includes a release rod 6 perpendicular to the control shaft 4, which is also perpendicular to the main shaft and engages with it. The clutch actuator 1 is located above the clutch housing 3.

[0035] A transmission component 7 is mounted on the separating rod 6. The transmission component 7 and the separating rod 6 can be connected by a key, integrally formed, or other fixed connection methods. Unlike Embodiment 1, the transmission component 7 includes a fan-shaped transmission part, the center of which is located on the axis of the separating rod 6. The fan-shaped transmission part has a transmission surface that meshes with the control shaft 4. The fan-shaped transmission part includes a radial surface and an arc-shaped transmission surface. The arc of the transmission surface is less than 180°, and transmission teeth are provided on the transmission surface. There are two radial surfaces, located on opposite sides of the transmission surface. The included angle between the control shaft 4 and the outer side of the clutch housing 3 is 30°-60°; in this embodiment, this angle is preferably 40°. The inclined arrangement allows the clutch actuator 1 to occupy more suitable space in the longitudinal and transverse directions of the horizontal plane, reducing the likelihood of interference with other structures.

[0036] The connecting assembly comprises a connecting housing 10, a transmission cavity 11 is arranged in the connecting housing 10, and the transmission member 7 is arranged in the transmission cavity 11. The horizontal section shape of the transmission cavity 11 is also a sector, and the angle of the sector is less than 180°. Two limiting surfaces 12 are arranged in the transmission cavity 11, and the radial surface can be attached to the limiting surface 12 during the rotation of the transmission member 7. The limiting surface 12 is provided with a buffer pad made of flexible material.

[0037] The clutch assembly further comprises a clutch cover 3, and the connecting housing 10 and the clutch cover 3 are connected through a connecting seat 13. The outer side surface of the connecting housing 10 is flush with the outer side surface of the clutch cover 3. The lower side surface of the connecting housing 10 and the upper side surface of the connecting seat 13 have the same profile, and the connecting housing 10 is provided with three through holes, the connecting seat 13 is provided with three connecting holes corresponding to the through holes, and the clutch cover 3 is further provided with screw holes corresponding to the through holes and the connecting holes. During installation, the connecting housing 10 and the connecting seat 13 are connected to the clutch cover 3 from top to bottom through three mounting bolts 14. The connecting seat 13 is further provided with a main hole, the separation rod 6 passes through the main hole, and the connecting hole and the main hole are connected with a reinforcing rib 16. The connecting housing 10 further comprises a shell bottom and a shell wall, and the shell body and the shell wall are further provided with an inclined rib 17 for improving the structural strength. In addition, two fastening bolts 15 are arranged between the connecting housing 10 and the connecting seat 13, and the fastening bolts 15 connect the connecting seat 13 to the connecting housing 10 from bottom to top. The positions of the two fastening bolts 15 are centrally symmetric relative to the axis of the separation rod 6. During the assembly of the connecting housing 10, the connecting seat 13 and the clutch cover 3, the connecting housing 10 is first connected through the fastening bolt 15, and then the connecting seat 13 and the connecting housing 10 are mounted to the clutch cover 3 through the mounting bolt 14. The lower side of the connecting seat 13 is further provided with a cover mounting portion, the inner side of the cover mounting portion is the main control, the outer side of the cover mounting portion and the clutch cover 3 are provided with a sealing ring 18, and the lower end of the cover mounting portion is chamfered.

[0038] The separation rod 6 comprises a lower rod arranged in the clutch cover 3 and an upper rod arranged in the connecting housing 10. The upper rod is provided with an upper bearing, and the lower rod and the connecting housing 10 are provided with a lower bearing. The lower end of the upper rod is provided with a shaft coupling transmission portion 19, and the upper end of the lower rod is provided with a shaft coupling transmission groove 20 matched with the shaft coupling transmission portion 19. The shaft coupling transmission portion 19 comprises a plurality of transmission teeth arranged at intervals in the circumferential direction, the length direction of the transmission teeth is the same as the axial direction of the separation rod 6, and the transmission teeth in the shaft coupling transmission groove 20 are engaged with the transmission teeth on the shaft coupling transmission portion 19. After the shaft coupling transmission portion 19 and the shaft coupling transmission groove 20 are axially moved and combined, the transmission teeth are used for circumferential limiting and transmission.

[0039] During operation, the control shaft 4 of the clutch actuator 1 rotates. Because the control shaft 4 meshes with the transmission surface on the transmission component 7, the control shaft 4 causes the transmission component 7 to oscillate. The amplitude of this oscillation is determined by the rotation of the control shaft 4 and is limited by the limiting surface 12 in the transmission cavity 11. If the oscillation amplitude is too large, the radial surface of the transmission component 7 will abut against the buffer pad on the limiting surface 12. Since the transmission component 7 and the upper part of the release lever 6 are fixedly connected, when the transmission component 7 oscillates, it also causes the release lever 6 to rotate. The release lever 6 meshes with the main shaft, and when the release lever 6 rotates, it also causes the main shaft to rotate, thus achieving clutch control.

[0040] Example 3, as Figure 7 As shown, a clutch connection structure includes a clutch assembly mounted on one side of an engine 21. The clutch assembly includes a clutch actuator 1, a main shaft, and a clutch housing 3. The clutch actuator 1 is located behind the engine cylinder block and is positioned relative to the clutch housing 3 towards the center of the engine 21. Here, "center" refers to the position where the clutch actuator 1 is closer to the centerline of the engine 21 relative to the clutch housing 3. The clutch actuator 1 and the main shaft are connected by a connecting assembly. The clutch actuator 1 includes a control shaft 4 and a controller housing 5. The control shaft 4 is threaded. The connecting assembly includes a release rod 6 perpendicular to the control shaft 4, which is also perpendicular to the main shaft and engages with it. The clutch actuator 1 is located above the clutch housing 3.

[0041] A transmission component 7 is mounted on the separating rod 6. The transmission component 7 and the separating rod 6 can be connected by a key, integrally formed, or other fixed connection methods. The transmission component 7 includes a fan-shaped transmission part and a transmission mounting part 9. The fan-shaped transmission part includes an arc-shaped transmission surface and two connecting rods connected to the transmission mounting part 9. The arc of the transmission surface is less than 180°, and transmission teeth are provided on the transmission surface. There are two radial surfaces, located on both sides of the transmission surface. The included angle between the control shaft 4 and the outer side of the clutch housing 3 is 30°-60°. In this embodiment, the angle is preferably 40°. By tilting the design, the space occupied by the clutch actuator 1 in the longitudinal and transverse directions of the horizontal plane can be more suitable, and it is less likely to interfere with other structures.

[0042] The connecting assembly comprises a connecting housing 10, a transmission cavity 11 is arranged in the connecting housing 10, and the transmission member 7 is arranged in the transmission cavity 11. The horizontal section shape of the transmission cavity 11 is also a sector, and the angle of the sector is less than 180°. Two limiting surfaces 12 are arranged in the transmission cavity 11, and the radial surface can be attached to the limiting surface 12 during the rotation of the transmission member 7. The limiting surface 12 is provided with a buffer pad made of flexible material.

[0043] The clutch assembly further comprises a clutch cover 3, and the connecting housing 10 and the clutch cover 3 are connected through a connecting seat 13. The outer side surface of the connecting housing 10 is flush with the outer side surface of the clutch cover 3. The lower side surface of the connecting housing 10 and the upper side surface of the connecting seat 13 have the same profile, and the connecting housing 10 is provided with three through holes, the connecting seat 13 is provided with three connecting holes corresponding to the through holes, and the clutch cover 3 is further provided with screw holes corresponding to the through holes and the connecting holes. During installation, the connecting housing 10 and the connecting seat 13 are connected to the clutch cover 3 from top to bottom through three mounting bolts 14. The connecting seat 13 is further provided with a main hole, the separation rod 6 passes through the main hole, and the connecting hole and the main hole are connected with a reinforcing rib 16. The connecting housing 10 further comprises a shell bottom and a shell wall, and the shell body and the shell wall are further provided with an inclined rib 17 for improving the structural strength. In addition, two fastening bolts 15 are arranged between the connecting housing 10 and the connecting seat 13, and the fastening bolts 15 connect the connecting seat 13 to the connecting housing 10 from bottom to top. The positions of the two fastening bolts 15 are centrally symmetric with respect to the axis of the separation rod 6. During the assembly of the connecting housing 10, the connecting seat 13 and the clutch cover 3, the connecting housing 10 is first connected through the fastening bolt 15, and then the connecting seat 13 and the connecting housing 10 are mounted to the clutch cover 3 through the mounting bolt 14. The lower side of the connecting seat 13 is further provided with a cover mounting portion, the inner side of the cover mounting portion is the main control, the outer side of the cover mounting portion and the clutch cover 3 are provided with a sealing ring 18, and the lower end of the cover mounting portion is chamfered.

[0044] The separation rod 6 comprises a lower rod arranged in the clutch cover 3 and an upper rod arranged in the connecting housing 10. The upper rod is provided with an upper bearing, and the lower rod and the connecting housing 10 are provided with a lower bearing. The lower end of the upper rod is provided with a shaft coupling transmission portion 19, and the upper end of the lower rod is provided with a shaft coupling transmission groove 20 matched with the shaft coupling transmission portion 19. The shaft coupling transmission portion 19 comprises a plurality of transmission teeth arranged at intervals in the circumferential direction, the length direction of the transmission teeth is the same as the axial direction of the separation rod 6, and the transmission teeth in the shaft coupling transmission groove 20 are engaged with the transmission teeth on the shaft coupling transmission portion 19. After the shaft coupling transmission portion 19 and the shaft coupling transmission groove 20 are axially moved and combined, the transmission teeth are used for circumferential limiting and transmission.

[0045] In the working process, the control shaft 4 of the clutch actuator 1 rotates, and since the control shaft 4 is in engagement with the transmission surface on the transmission member 7, the control shaft 4 drives the transmission member 7 to swing, the swing amplitude is determined by the rotation amount of the control shaft 4, and is limited by the limiting surface 12 in the transmission cavity 11, and once the swing amplitude is too large, the radial surface of the transmission member 7 will abut on the buffer pad on the limiting surface 12. Since the transmission member 7 and the upper rod of the separation rod 6 are fixedly connected, when the transmission member 7 swings, the separation rod 6 will also rotate. Since the separation rod 6 is in engagement with the main shaft, when the separation rod 6 rotates, the main shaft will also rotate, thereby realizing clutch control.

Claims

1. A clutch connection structure, characterized in that, The invention includes a clutch assembly mounted on an engine, the clutch assembly comprising a clutch actuator and a clutch housing, the clutch actuator being located at the rear of the engine cylinder block and disposed relative to the clutch housing toward the center of the engine.

2. The clutch connection structure according to claim 1, characterized in that, The clutch actuator is located above the clutch housing.

3. The clutch connection structure according to claim 1, characterized in that, The clutch assembly further includes a main shaft, and the clutch actuator and the main shaft are connected by a connecting assembly. The clutch actuator includes a control shaft with threads. The connecting assembly includes a release rod perpendicular to the control shaft, and a transmission component is mounted on the release rod. The transmission component includes a sector-shaped transmission part with a transmission surface that meshes with the control shaft.

4. The clutch connection structure according to claim 1, characterized in that, The connecting assembly includes a connecting housing, a transmission cavity is provided inside the connecting housing, and the transmission component is located inside the transmission cavity.

5. A clutch connection structure according to claim 4, characterized in that, The fan-shaped transmission part includes a radial surface and an arc-shaped transmission surface, and a limiting surface is provided inside the transmission cavity.

6. A clutch connection structure according to claim 5, characterized in that, The curvature of the arc surface is less than 180°.

7. A clutch connection structure according to any one of claims 4-6, characterized in that, The housing at the connection point is connected to the clutch cover via a connecting seat.

8. A clutch connection structure according to claim 7, characterized in that, The connector includes a main hole and several connecting holes, and the housing at the connector is connected to the engine housing by connecting bolts passing through the connecting holes.

9. A clutch connection structure according to claim 7, characterized in that, A reinforcing rib connects the connecting hole and the main hole.

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