WO2016059821A1

WO2016059821A1 - Clutch device

Info

Publication number: WO2016059821A1
Application number: PCT/JP2015/064281
Authority: WO
Inventors: 将行野中; 栄幸大石
Original assignee: 株式会社エフ・シー・シー
Priority date: 2014-10-14
Filing date: 2015-05-19
Publication date: 2016-04-21
Also published as: CN106605075B; JP6265489B2; CN106605075A; JP2016080021A; CN106605075A8; BR112017007324B1; BR112017007324A2

Abstract

Provided is a clutch device with which a conventional detent tool can continue to be used even when three ribs are formed on the clutch center. The clutch device is provided with a clutch center for holding clutch plates disposed to face friction plates that are rotated by a driving shaft. The clutch center is equipped with a meshing section radially outside of a connecting section that is connected to a driven shaft by a nut. Between the connecting section and the meshing section, ribs are formed, the meshing section ends of which extend forward in the nut rotation direction. On the inner circumferential surface of the meshing section of the clutch center, spring guides rising from a flange section are formed. On the ribs and spring guides, hook-accepting sections are formed on the side surfaces that are on the front side in the nut rotation direction.

Description

Clutch device

The present invention relates to a clutch device that transmits and interrupts the rotational driving force of a driving shaft that is driven to rotate by a prime mover to a driven shaft that drives a driven body.

2. Description of the Related Art Conventionally, in a vehicle such as a two-wheeled vehicle or a four-wheeled vehicle, a clutch device is disposed between a prime mover such as an engine and a driven body such as a wheel to transmit and block the rotational driving force of the prime mover to the driven body. It is used. In general, a clutch device is configured such that a friction plate that is rotated by the rotational driving force of a prime mover and a clutch plate that is connected to the driven body are disposed opposite to each other, and the friction plate and the clutch plate are brought into close contact with and separated from each other. Force transmission and interruption can be performed arbitrarily.

For example, in Patent Document 1 below, a cylindrical coupling portion that is formed on the outer side of a cylindrical coupling portion that is coupled to a driven shaft that rotationally drives a driven body and that meshes with an inner peripheral portion of a clutch plate. A clutch device is disclosed that includes a clutch center that is erected in a wall shape between the two and a rib body. Here, when the clutch center is assembled to the driven shaft, the two hook portions provided at the tip portions of the bifurcated portions of the anti-rotation tool are respectively fitted to the rib body to prevent the clutch center from rotating together.

Japanese Patent Laid-Open No. 08-145074

However, in the clutch device described in Patent Document 1, four rib bodies are evenly arranged along the circumferential direction of the clutch center. However, a commonly used bifurcated detent tool can be used. In consideration of this, it is substantially difficult to reduce the number of rib bodies, which is not necessarily preferable from the viewpoints of manufacturing efficiency and rotational efficiency.

That is, the clutch device can be configured by forming three rib bodies along the circumferential direction of the clutch center. However, in this case, a non-rotating tool must be newly manufactured corresponding to the arrangement of the three rib bodies, and it is extremely unrealistic to prepare a non-rotating tool according to the number of rib bodies. Is.

The present invention has been made to cope with the above-described problem, and its purpose is to provide a clutch that can continue to use a conventionally used anti-rotation tool even when three rib bodies are formed in the clutch center. To provide an apparatus.

In order to achieve the above object, the present invention is characterized in that in a clutch device that transmits and interrupts the rotational driving force of a driving shaft to a driven shaft, an annular friction plate that is driven to rotate by the rotational driving of the driving shaft, and the friction plate An annular clutch plate that is arranged and rotationally driven by contacting the friction plate, a cylindrical coupling portion that is coupled to the driven shaft by a lock nut, and a cylinder that meshes with the inner peripheral portion of the clutch plate outside the coupling portion A clutch center having a respective meshing portion, a pressure plate that is displaceable in a direction approaching and separating from the clutch center, and presses the friction plate or the clutch plate, and a meshing portion in the clutch center Inward along the circumferential direction of the clutch center And three coil springs that press the pressure plate against the friction plate or the clutch plate, and the clutch center is disposed between at least one of the connection portion and the engagement portion between the connection portion and the engagement portion. Three wall-shaped rib bodies that are formed to be connected and are provided along the circumferential direction of the clutch center, and are provided on the inner surface of the meshing portion between the three rib bodies and face the inner surface of the coil spring. A spring guide made of a concave wall covering the outer periphery, and the rib body and the spring guide are the two hooks in the anti-rotation tool provided at positions where the two hook bodies made of the columnar body are separated from each other. The hook receiving part to which each side of the body is addressed is the rotation direction of the lock nut in the rib body and the spring guide. There to be provided on the front side of the wall.

According to the feature of the present invention configured as described above, the clutch device is provided with two hook body receiving portions to which the two hook bodies of the detent tool are respectively addressed between the rib body and the three rib bodies. Since it is provided on each spring guide, even if three rib bodies are provided, the conventionally used anti-rotation tool can be continuously used.

Further, another feature of the present invention is that in the clutch device, the rib body is formed such that the meshing portion side extends to the front side in the rotation direction of the lock nut with respect to the coupling portion side.

According to another feature of the present invention configured as described above, the clutch device is formed such that the meshing portion side of the rib body extends to the front side in the rotation direction of the lock nut with respect to the coupling portion side. The hook body receiving portion can be configured by the body itself (in other words, as a part of the rib body), and the configuration of the clutch center and the clutch device can be simplified and reduced in weight.

Further, another feature of the present invention is that in the clutch device, the rib body is formed to be connected to the connecting portion and the meshing portion.

According to another feature of the present invention configured as described above, the clutch device is formed by the rib body being connected to the connecting portion and the engaging portion, respectively, so that the connecting portion and the engaging portion are reinforced and rigid. Can be increased. That is, the rib body has a function to reinforce the connecting portion and the meshing portion in addition to being used to prevent rotation when the clutch center is assembled.

Further, another feature of the present invention is that in the clutch device, the hook receiving portions are respectively provided on three rib bodies and spring guides.

According to another aspect of the present invention configured as described above, the clutch device is provided with the hook body receiving portion on each of the three rib bodies and the spring guide, so that the position of the clutch center in the rotational direction is determined. Depending on the position, the anti-rotation tool can be fitted to any one of the three rib bodies and the spring guide, so that the anti-rotation tool can be fitted regardless of the position of the clutch center in the rotational direction. Workability can be improved.

It is sectional drawing which shows the outline of the whole structure of the clutch apparatus which concerns on one Embodiment of this invention. It is a top view which shows roughly the external appearance structure of the clutch center integrated in the clutch apparatus shown in FIG. FIG. 3 is a plan view schematically showing an external configuration of a non-rotating tool used for assembling the clutch center shown in FIG. 2. It is a front view which shows roughly the external appearance structure of the detent | locking tool shown in FIG. FIG. 5 is a cross-sectional view showing a state of the assembly work of the clutch center as seen from line 5-5 shown in FIG. It is sectional drawing which shows the outline of the whole structure of the clutch apparatus which concerns on the modification of this invention. It is sectional drawing which shows the outline of the whole structure of the clutch apparatus which concerns on the other modification of this invention. It is sectional drawing which shows the outline of the whole structure of the clutch apparatus which concerns on the other modification of this invention. It is a top view which shows roughly the external appearance structure of the clutch center which concerns on the other modification of this invention.

Hereinafter, an embodiment of a clutch device according to the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view schematically showing an outline of the overall configuration of a clutch device 100 according to the present invention. FIG. 2 is a plan view schematically showing an external configuration of the clutch center 105 incorporated in the clutch device 100. Note that each drawing referred to in the present specification is schematically represented by exaggerating some of the components in order to facilitate understanding of the present invention. For this reason, the dimension, ratio, etc. between each component may differ. The clutch device 100 is a mechanical device for transmitting and interrupting a driving force of an engine (not shown) as a prime mover in a two-wheeled vehicle (motorcycle) to a wheel (not shown) as a driven body. It is arranged between a transmission (not shown).

(Configuration of clutch device 100)
The clutch device 100 includes an aluminum alloy clutch housing 101. The clutch housing 101 is formed in a substantially cup shape as a whole by forming a cylindrical holding portion 101b at an outer edge portion of a fixed portion 101a formed in a flat plate shape. The holding unit 101b
A plurality of (in this embodiment, five) friction plates 102 can be displaced along the axial direction of the holding portion 101b in the inner region, and can rotate together with the holding portion 101b (that is, the clutch housing 101). Each is held by spline fitting.

The friction plate 102 is a flat plate-like component pressed against a clutch plate 107, which will be described later, and is formed by punching a thin plate material made of steel or aluminum. A friction material made up of a plurality of paper pieces (not shown) is attached to both side surfaces (front and back surfaces) of the friction plate 102, and oil grooves (not shown) are formed between the friction materials.

The input gear 104 is fixed to the fixed portion 101a of the clutch housing 101 by a rivet 103b via a torque damper 103a. The input gear 104 is a mechanical element that meshes with a drive gear (not shown) coupled to a driving shaft (not shown) that is driven to rotate by driving of the engine. The input gear 104 is configured such that an inner peripheral portion of the cylindrical portion 104a is an outer periphery of a driven shaft 116, which will be described later, in a state where the fixing portion 101a of the clutch housing 101 is fitted to an outer peripheral portion of the cylindrical portion 104a formed at the center portion. The part is fitted rotatably via a bush 104b. A clutch center 105 and a pressure plate 113 (to be described later) are provided in the inner region of the holding portion 101b of the clutch housing 101, respectively.

The clutch center 105 is an aluminum alloy part that holds the clutch plate 107, and mainly includes a connecting portion 105a, a flange portion 105b, and a meshing portion 105c. The connecting portion 105a is a cylindrical portion connected to the driven shaft 116, and is spline-fitted to the driven shaft 116 via a number of spline grooves formed along the axial direction of the clutch center 105 on the inner peripheral surface. ing. In this case, the connecting portion 105a is fastened and fixed to the driven shaft 116 by the nut 106b through the collar 106a.

The flange portion 105b is a disc-shaped portion that connects the connecting portion 105a and the meshing portion 105c, and is formed to extend radially outward from one end (right side in the drawing) of the connecting portion 105a. The flange portion 105b is formed with a through hole through which the boss portion 113a of the pressure plate 113 passes.

The meshing portion 105c is formed in a cylindrical shape extending from the outer edge portion of the flange portion 105b along the axial direction of the connecting portion 105a, and a plurality of clutch plates 107 (four in the present embodiment) are provided on the outer peripheral surface. Can be displaced along the axial direction of the meshing portion 105c with the friction plate 102 sandwiched therebetween, and can be held by spline fitting while being rotatable together with the meshing portion 105c (that is, the clutch center 105). ing. A front end portion of the meshing portion 105c is formed with a facing portion 105d that is bent outward in the radial direction and formed in a flange shape. The facing portion 105 d is a portion that sandwiches the friction plate 102 and the clutch plate 107 in cooperation with the pressure plate 113.

The clutch plate 107 is a flat plate-like component pressed against the friction plate 102, and is formed by punching a thin plate material made of steel or aluminum. On both side surfaces (front and back surfaces) of the clutch plate 107, oil grooves (not shown) having a depth of several μm to several tens μm for holding clutch oil are formed. In addition, an internal spline for spline fitting with the clutch center 105 is formed on the inner peripheral portion of the clutch plate 107.

A rib body 108 is formed integrally with the clutch center 105 between the coupling portion 105 a and the meshing portion 105 c on the flange portion 105 b of the clutch center 105. As shown in FIG. 2, the rib body 108 is a portion used when the clutch center 105 is attached to the driven shaft 116, and has a wall shape on the flange portion 105 b while being connected to the coupling portion 105 a and the meshing portion 105 c. It is formed upright. In this case, the rib bodies 108 are formed such that the three rib bodies 108 are equally arranged along the circumferential direction of the clutch center 105 on the flange portion 105b.

Each of the rib bodies 108 is formed with a hook receiving portion 110 on the side surface that is the front side in the rotation direction (see the broken arrow in the figure) when the nut 106b is tightened. The hook receiving part 110 is a portion to which one of the two

hooks

203a and 203b of the anti-rotation tool 200 described later is pressed, and is a plane that makes surface contact with the side surface of the hook 203a. It is formed in a shape. In addition, the hook body receiving part 110 is formed at a position where the other hook body 203b of the two

hook bodies

203a and 203b in the locking tool 200 is pressed against the hook body receiving part 112 described later. .

Specifically, the rib body 108 on which the hook receiving portion 110 is formed has the meshing portion 105c side in front of the rotation direction when the nut 106b is tightened with respect to the connecting portion 105a side (see the broken arrow in the drawing). It is formed so as to extend linearly. Further, the hook body receiving portion 110 is formed to be larger than the side surface area of the rib body 108 on the connecting portion 105a side by forming the rib body 108 so as to spread from the connecting portion 105a side. In the present embodiment, the rib body 108 is formed so as to extend from the connecting portion 105a side toward the meshing portion 105c side so as to extend over the entire axial direction of the meshing portion 105c (see FIG. 1).

Further, a spring guide 111 is formed on the inner side surface of the meshing portion 105c of the clutch center 105 so as to protrude from the inner side surface and stand up from the flange portion 105b. The spring guide 111 is a portion for preventing the displacement and deformation of the coil spring 114 provided on the outer peripheral portion of the boss portion 113a to the outside in the radial direction and promoting stable expansion and contraction in the axial direction. Is formed so as to protrude from the inner side surface of the meshing portion 105c in a wall-like shape recessed in a concave shape so as to cover the outer peripheral surface facing the inner side surface of the meshing portion 105c. The spring guide 111 is formed so that the three spring guides 111 corresponding to the three boss portions 113a are formed at positions corresponding to the three boss portions 113a along the circumferential direction of the clutch center 105, that is, equally arranged. Yes.

In each of the spring guides 111, a hook receiving portion 112 is formed on the front side surface in the rotational direction (see the broken arrow in the drawing) when the nut 106b is tightened. Similarly to the hook receiving part 110, the hook receiving part 112 is a portion to which the other hook 203b of the two

hooks

203a and 203b in the detent tool 200 is pressed. It is formed in a planar shape in surface contact with the side surface of 203b. Further, the hook body receiving portion 112 is formed at a position where the one hook body 203 a of the two

hook bodies

203 a and 203 b in the rotation stopper tool 200 is pressed against the hook body receiving portion 110.

Specifically, the spring guide 111 in which the hook receiving portion 112 is formed is formed to extend toward the front side in the rotation direction (see the broken arrow in the drawing) when the nut 106b is tightened. The hook receiving portion 112 is formed with the same length as the spring guide 111. In addition, on the flange portion 105b of the clutch center 105, the two anti-rotation tools 200 have two anti-rotation tools 200 on the front side in the rotational direction (see the broken arrow in the drawing) when the nut 106b is tightened with respect to the

hook receiving portions

110 and 112. Naturally, the space | interval in which the

hooks

203a and 203b can be inserted is secured.

The pressure plate 113 is a component for bringing the friction plate 102 and the clutch plate 107 into close contact with each other by pressing the friction plate 102, and the aluminum material is substantially the same as the outer diameter of the clutch plate 107. It is formed by forming it into a ring shape. The pressure plate 113 has an outer edge portion that presses the friction plate 102, and an inner peripheral portion that is slidably fitted in the outer peripheral portion of the coupling portion 105 a of the clutch center 105 along the axial direction.

Further, the pressure plate 113 is formed with three boss portions 113a projecting in the axial direction of the clutch center 105 along the circumferential direction on the disk surface. Each boss portion 113a is a portion to which a flat plate-shaped pressure plate 113 is fixedly attached by a bolt 113b, and is formed in a column shape penetrating through a through hole formed in the flange portion 105b of the clutch center 105. Coil springs 114 are respectively provided between the lifter plate 115 and the flange portion 105b of the clutch center 105 on the outer peripheral portions of the three boss portions 113a. The coil spring 114 is an elastic body for pressing the pressure plate 113 against the friction plate 102 by pressing the lifter plate 115 against the flange portion 105b. In this embodiment, the coil spring 114 is formed by spirally winding spring steel. Has been.

The lifter plate 115 is a component for cutting the transmission state of the rotational driving force of the clutch device 100 by being pressed by a clutch release mechanism (not shown), and is triangular in a plan view in which a through hole is formed at the center. It is formed in a flat plate shape. Here, the clutch release mechanism is a mechanical device that presses the lifter plate 115 toward the driven shaft 116 by the operation of a clutch operation lever (not shown) of a driver of a self-propelled vehicle on which the clutch device 100 is mounted.

The driven shaft 116 is a component that transmits the rotational driving force transmitted by the clutch device 100 to the driven body, and is configured by forming a steel material into a hollow shaft body. In the driven shaft 116, the clutch center 105 is spline-fitted to one end (right side in the figure), and a transmission (not shown) in the self-propelled vehicle is connected to the other end (left side in the figure).

(Manufacture of clutch device 100)
Next, a manufacturing process of the clutch device 100 configured as described above will be described. In the description of the manufacturing process, only the process directly related to the present invention, that is, the process of assembling the clutch center 105 to the driven shaft 116 will be described.

Prior to the description of assembling the clutch center 105 to the driven shaft 116, the detent tool 200 used for assembling the clutch center 105 to the driven shaft 116 will be briefly described.

The anti-rotation tool 200 (for example, a universal holder) is a tool for preventing so-called co-rotation in which the clutch center 105 rotates together with the nut 106b when assembled to the driven shaft 116 of the clutch center 105. Specifically, as shown in FIG. 3 and FIG. 4, the anti-rotation tool 200 includes two

arm bodies

201 a and 201 b made of an elongated plate-like body connected via a fulcrum pin 202 so as to be freely opened and closed. The hooking

bodies

203a and 203b are respectively formed at the tip portions of these two

arm bodies

201a and 201b.

The hooking

bodies

203a and 203b are portions that are hung on both ends in the radial direction through the center of the clutch center 105, and are columnar (plate-like) protruding in a direction perpendicular to the respective front ends of the

arm bodies

201a and 201b. In this embodiment, it is formed in a plate shape. Further, an opening degree adjusting mechanism 204 for adjusting the opening degree of the arm bodies 201a and 202b is provided in front of the fulcrum pin 202 in the

arm bodies

201a and 201b. The arm body 201b of the

arm bodies

201a and 201b extends rearward from the fulcrum pin 202 and constitutes a grip portion 205 serving as a handle for the operator.

An operator who assembles the clutch center 105 on the driven shaft 116 first sets the clutch housing 101, the input gear 104, the friction plate 102, the clutch plate 107, the clutch center 105, and the pressure plate 113 on the driven shaft 116. 106a and nut 106b are prepared, and a detent tool 200 is prepared.

Next, the operator inserts the nut 106b after fitting the collar 106a to the tip of the driven shaft 116. In the process of screwing the nut 106 b, the operator attaches the rotation prevention tool 200 to the clutch center 105 to prevent the clutch center 105 from rotating together. Specifically, as shown in FIG. 5, the operator places a tool (not shown) on the nut 106 b in a state where the

hooks

203 a and 203 b of the detent tool 200 are respectively directed to the

hook receiving parts

110 and 112. Tighten with. In this case, the clutch center 105 tries to rotate together with the nut 106b. However, since the

hook receiving parts

110 and 112 abut against the

hooks

203a and 203b of the anti-rotation tool 200 and the rotation is prevented, the clutch center 105 rotates together with the nut 106b. Is prevented.

Thereby, the operator can assemble the clutch center 105 to the driven shaft 116 while preventing co-rotation. Then, the operator completes the clutch device 100 by attaching the coil spring 114 and the lifter plate 115 to the clutch center 105 and the pressure plate 113 attached on the driven shaft 116, but the description of these operations is omitted. To do.

(Operation of clutch device 100)
Next, the operation of the clutch device 100 configured as described above will be described. As described above, the clutch device 100 is disposed between the engine and the transmission in the vehicle, and the driving force of the engine is transmitted to the transmission by the operation of the clutch operation lever by the driver of the vehicle. Shut off.

Specifically, in the clutch device 100, when a vehicle driver (not shown) does not operate a clutch operation lever (not shown), a clutch release mechanism (not shown) does not press the lifter plate 115. Therefore, the pressure plate 113 presses the friction plate 102 by the elastic force of the coil spring 114. As a result, the clutch center 105 is in a state where the friction plate 102 and the clutch plate 107 are displaced toward the facing portion 105d of the clutch center 105 and are pressed against each other to be frictionally connected. In other words, the pressure plate 113 And the opposed portion 105d are driven to rotate by sandwiching the friction plate 102 and the clutch plate 107. That is, the rotational driving force of the prime mover is transmitted to the clutch center 105, and the driven shaft 116 is rotationally driven. In this case, in the clutch device 100, the spring guide 111 prevents the coil spring 114 from being displaced, and the rib body 108 reinforces the coupling portion 105a and the meshing portion 105c, so that driving force is stably transmitted. .

On the other hand, in the clutch device 100, when a vehicle driver (not shown) operates a clutch operation lever (not shown), a clutch release mechanism (not shown) presses the lifter plate 115. The plate 107 is displaced in a direction away from the facing portion 105 d against the elastic force of the coil spring 114. As a result, the clutch center 105 is in a state in which the frictional connection between the friction plate 102 and the clutch plate 107 is released, and thus the rotational drive is attenuated or the rotational drive is stopped. That is, the rotational driving force of the prime mover is cut off from the clutch center 105.
In this case, in the clutch device 100, the spring guide 111 prevents displacement and bending deformation of the coil spring 114, and the rib body 108 reinforces the coupling portion 105a and the meshing portion 105c so that the driving force is stably blocked. To be done.

As can be understood from the above description of operation, according to the above-described embodiment, the clutch device 100 includes two hook

body receiving portions

110 and 112 to which the two

hook bodies

203a and 203b of the detent tool 200 are respectively addressed. Are provided on the rib body 108 and the spring guide 111 provided between the three rib bodies 108, respectively, so that even when three rib bodies 108 are provided, the conventional anti-rotation tool has been used continuously. Can be used.

Furthermore, the implementation of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the object of the present invention. In each modification shown below, the same code | symbol is attached | subjected to the code | symbol attached | subjected to the clutch apparatus 100 to the component similar to the clutch apparatus 100 in the said embodiment, and the description is abbreviate | omitted.

For example, in the above-described embodiment, the rib body 108 is formed in a wall shape connected to the connecting portion 105a and the meshing portion 105c. Thereby, the rib body 108 functions as a rib that reinforces the connecting portion 105a and the meshing portion 105c, and functions as a rib that reinforces the flange portion 105b by being connected to the flange portion 105b. However, the rib body 108 is not necessarily limited to the above embodiment as long as it is formed in a wall shape connected to the connecting portion 105a or the meshing portion 105c.

Therefore, for example, as shown in FIGS. 6 and 7, the rib body 108 is connected to the connecting portion 105 a and not connected to the engaging portion 105 c, and is connected to the engaging portion 105 c without connecting to the connecting portion 105 a. It can be. According to these, the clutch center 105 can be reduced in weight while reinforcing the connecting portion 105a or the meshing portion 105c. In addition, when it is set as the structure which connects the rib body 108 with the connection part 105a and the meshing part 105c, respectively, it can also be set as the structure which provides a clearance gap between the flange parts 105b and does not connect with the flange part 105b.

Further, in the above-described embodiment, the rib body 108 is formed so as to spread from the connecting portion 105a side so as to be hooked over the entire axial direction of the meshing portion 105c. Thereby, the rib body 108 can reinforce the whole meshing part 105c. However, the rib body 108 may be formed to be connected to a part of the meshing portion 105c in the axial direction. Specifically, for example, as shown in FIG. 8, the rib body 108 can be formed in a state of being connected only to a half on the flange portion 105 b side in the axial direction.

Further, in the above embodiment, the rib body 108 is formed such that the meshing portion 105c side extends to the front side in the rotational direction of the lock nut 106b with respect to the connecting portion 105a side. Thus, the clutch device 100 can constitute the hook receiving portion 110 by the rib body 108 itself (in other words, as a part of the rib body 108), and the clutch center 105 and the clutch device 100 can be configured. Can be simplified and reduced in weight. However, the hook receiving portion 110 can be formed not as a part of the rib body 108 but as a portion attached to the rib body 108. Specifically, for example, as shown in FIG. 9, the hook receiving portion 110 is formed in a block shape that protrudes in a convex shape from the side surface of the rib body 108 that extends linearly from the connecting portion 105 a in the radial direction. It can also be configured. According to this, the rib body 108 can reinforce the meshing part 105c more firmly. In the above-described embodiment, the rib body 108 is formed in a straight line shape, but the engagement portion 105c side is formed to extend in a curved shape toward the front side in the rotation direction of the lock nut 106b with respect to the connection portion 105a side. You can also.

In the above-described embodiment, the

hook receiving portions

110 and 112 are formed on the three rib bodies 108 and the spring guide 111, respectively. However, the

hook receiving portions

110 and 112 may be formed on at least one rib body 108 and spring guide 111, respectively.

DESCRIPTION OF SYMBOLS 100 ... Clutch apparatus, 101 ... Clutch housing, 101a ... Fixed part, 101b ... Holding part, 102 ... Friction plate, 103a ... Torque damper, 103b ... Rivet, 104 ... Input gear, 104a ... Cylindrical part, 104b ... Bush, 105 ... Clutch center, 105a ... Connection part, 105b ... Flange part, 105c ... Engagement part, 105d ... Opposing part, 106a ... Collar, 106b ... Nut, 107 ... Clutch plate, 108 ... Rib body, 110 ... Hook receiving part 111, spring guide, 112 ... hook receiving part, 113 ... pressure plate, 113a ... boss, 113b ... bolt, 114 ... coil spring, 115 ... lifter plate, 116 ... driven shaft,
DESCRIPTION OF SYMBOLS 200 ... Anti-rotation tool, 201a, 201b ... Arm body, 202 ... Supporting pin, 203a, 203b ... Hook body, 204 ... Opening adjustment mechanism, 205 ... Grasping part.

Claims

In the clutch device that transmits and cuts off the rotational driving force of the driving shaft to the driven shaft,
An annular friction plate that is rotationally driven by the rotational drive of the driving shaft;
An annular clutch plate that is disposed opposite to the friction plate and rotationally driven by contacting the friction plate;
A clutch center having a cylindrical coupling portion coupled to the driven shaft by a lock nut and a cylindrical meshing portion that meshes with an inner peripheral portion of the clutch plate outside the coupling portion;
A pressure plate that is provided so as to be displaceable in a direction approaching and separating from the clutch center and presses the friction plate or the clutch plate;
Three coil springs provided along the circumferential direction of the clutch center inside the meshing portion of the clutch center and pressing the pressure plate against the friction plate or the clutch plate,
The clutch center is
A wall-shaped rib body that is formed between the coupling portion and the meshing portion so as to be connected to at least one of the coupling portion and the meshing portion and is provided along the circumferential direction of the clutch center. When,
A spring guide comprising a concave wall provided on the inner surface of the meshing portion between the three rib bodies and covering the outer peripheral portion of the coil spring facing the inner surface;
The rib body and the spring guide are
The hook body receiving portions to which the respective side surfaces of the two hook bodies are addressed in the anti-rotation tool provided at the positions where the two hook bodies made of the columnar bodies are separated from each other are provided in the rib body and the spring guide. A clutch device provided on a front wall surface in the rotation direction of the lock nut.
In the clutch device according to claim 1,
The rib body is
The clutch device, wherein the engagement portion side is formed to extend forward in the rotation direction of the lock nut with respect to the connection portion side.
In the clutch device according to claim 1 or 2,
The rib body is
A clutch device, wherein the clutch device is formed to be connected to the connecting portion and the meshing portion.
In the clutch device according to any one of claims 1 to 3,
The hook receiving part is
A clutch device provided on each of the three rib bodies and the spring guide.