WO2016047197A1

WO2016047197A1 - Clutch device

Info

Publication number: WO2016047197A1
Application number: PCT/JP2015/064277
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: 2014-09-26
Filing date: 2015-05-19
Publication date: 2016-03-31
Also published as: CN106662169A; JP2016070287A; BR112017004994B1; JP6571917B2; BR112017004994A2

Abstract

Provided is a clutch device in which clutch oil is efficiently conducted to friction plates and clutch plates to improve both the lubrication performance of the clutch oil and the efficiency of transmission of drive force. A clutch device 100 is provided with a clutch center 105 for holding clutch plates 107 arranged facing friction plates 103 rotated and driven by a prime mover shaft. The clutch center 105 is provided with a meshing section 105c located radially outside a connection section 105a with a flange section 105b therebetween, the connection section 105a being connected to a driven shaft 114 capable of supplying clutch oil. The meshing section 105c is provided with an oil conduction hole 105d for conducting clutch oil to the friction plates 103 and the clutch plates 107. A wall-like clutch oil guide body 108 is formed between the connection section 105a and the meshing section 105c in such a manner that the meshing section 105c side of the clutch oil guide body 108 extends rearward in the direction in which the clutch center 105 is rotated and driven.

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, Patent Document 1 below discloses a clutch device in which an oil supply hole for supplying clutch oil into the clutch device is formed on a driven shaft (drive shaft) that is connected to a clutch plate and rotationally drives a driven body. Has been. In this case, the clutch oil supplied from the end of the drive shaft is supplied to the friction plate and the clutch plate via the control chamber formed by the chamber web and the oil-damping web on the inner boss that is rotationally driven integrally with the drive shaft. Is done.

JP 2001-82504 A

However, in the clutch device described in Patent Document 1, since the wall-shaped chamber web constituting the control chamber is formed to extend in the radial direction of the inner boss, the clutch oil supplied from the end of the driven shaft The reaction force (resistance) at the time of contact is large and the transmission efficiency of the driving force is reduced, and part of the clutch oil that contacts the chamber web is easily guided to the inside in the radial direction of the inner boss, and the lubrication performance by the clutch oil is reduced. There is a problem of doing.

The present invention has been made to cope with the above-described problems, and the object thereof is to efficiently guide the clutch oil to the friction plate and the clutch plate to improve the driving force transmission efficiency and the clutch oil lubrication performance, respectively. To provide a clutch device.

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 are opposed to each other. An annular clutch plate that is arranged and rotates by contacting with the friction plate, a coupling portion coupled to the driven shaft, and an outer periphery of the coupling portion meshes with an inner peripheral portion of the clutch plate and clutch oil is coupled to the clutch plate. A clutch center having a meshing portion having an oil guide hole for guiding the pressure, and 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. The clutch center engages with the connecting portion. A clutch oil guide body is provided which is formed of a wall body standing upright with respect to the connecting portion and is formed such that the meshing portion side of the wall body extends rearward in the rotational driving direction of the clutch center with respect to the connecting portion side. There is in being.

According to the characteristics of the present invention configured as described above, the clutch device is provided between the coupling portion and the meshing portion of the clutch center that is coupled to the driven shaft via the coupling portion in the rearward direction of the clutch center in the rotational driving direction. Since the wall-like clutch oil guide body extending in the direction is formed, the clutch oil is engaged with the clutch oil while reducing the reaction force (resistance) when the clutch oil supplied from the driven shaft contacts the clutch oil guide body. Can be led to the side. Thus, the clutch device can efficiently guide the clutch oil supplied from the driven shaft to the friction plate and the clutch plate, thereby improving the driving force transmission efficiency and the clutch oil lubrication performance, respectively.

Another feature of the present invention is that, in the clutch device, a plurality of clutch oil guide bodies are provided along the circumferential direction of the clutch center.

According to another aspect of the present invention configured as described above, the clutch device includes a plurality of clutch oil guide bodies formed in the circumferential direction of the clutch center, and therefore, the clutch oil supplied from the driven shaft is efficiently frictioned. Leading to the plate and clutch plate.

Further, another feature of the present invention is that, in the clutch device, the clutch oil guide 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 connecting the clutch oil guide body to the coupling portion and the meshing portion, respectively, so that the meshing portion is reinforced to increase the rigidity. be able to. That is, the clutch guide body can function as a rib that reinforces the mesh portion in addition to guiding clutch oil by connecting one end portion of the wall body to the mesh portion.

According to another aspect of the present invention, in the clutch device, the clutch center has a plurality of oil guide holes formed along an axial direction of the driven shaft, and the clutch oil guide body includes the plurality of oil guide holes in the meshing portion. It exists in connecting within the range in which the oil guide hole was formed.

According to another aspect of the present invention configured as described above, the clutch device is configured such that the clutch oil guide body is connected to the meshing portion within a formation range of a plurality of oil guide holes formed in the meshing portion. The clutch oil supplied from the driven shaft can be accurately guided to all the oil guide holes, and can be efficiently guided to the friction plate and the clutch plate.

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 of the clutch center integrated in the clutch apparatus 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 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 of the clutch center integrated in the clutch apparatus shown in FIG.

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. 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 a part that constitutes a part of the casing of the clutch device 100, and mainly includes a cylindrical portion 101a and a housing portion 101b. The cylindrical portion 101a is a cylindrical portion that is rotatably fitted to an outer peripheral portion of a driven shaft 114 described later via a bush 102.

The housing portion 101b is formed in a cup shape that extends radially outward from one end (right side in the drawing) of the tubular portion 101a and then extends in the axial direction of the tubular portion 101a. The housing portion 101b can displace a plurality of (in this embodiment, five) friction plates 103 in the inner region along the axial direction of the housing portion 101b, and the housing portion 101a (that is, the clutch housing 101). Each is held by spline fitting in a state where it can rotate integrally.

The friction plate 103 is a flat plate-shaped component pressed against a clutch plate 107, which will be described later, and is formed by punching a thin plate material made of SPCC (cold rolled steel plate) material in a ring shape. An oil groove (not shown) having a depth of several μm to several tens of μm for holding clutch oil is formed on each side surface (front and back surfaces) of the friction plate 103, and an object of improving wear resistance. The surface hardening treatment is applied respectively.

The input gear 104 is fixed to the left side surface of the clutch housing 101 by a rivet 104b via a torque damper 104a. The input gear 104 meshes with a drive gear (not shown) connected to a driving shaft (not shown) that is driven to rotate by driving of the engine and is driven to rotate. A clutch center 105 and a pressure plate 109 (to be described later) are provided in the inner region of the housing 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 114, and is spline-fitted to the driven shaft 114 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 114 by the nut 106b through the washer 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 of the pressure plate 109 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 103 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. The meshing portion 105c is formed with an oil guide hole 105d at a portion where the clutch plate 107 is spline-fitted.

The oil guide hole 105d is a through hole for guiding clutch oil (not shown) supplied from the driven shaft 114 to the friction plate 103 and the clutch plate 107, and a plurality of oil guide holes 105d along the longitudinal direction (axial direction) of the meshing portion 105c. Is formed. A receiving portion 105e formed in a ring shape by bending outward in the radial direction is formed at the tip of the meshing portion 105c. The receiving portion 105e is a portion that sandwiches the friction plate 103 and the clutch plate 107 in cooperation with the pressure plate.

The clutch plate 107 is a flat plate-like component pressed against the friction plate 103, and is formed by punching a thin plate material made of a SPCC (cold rolled steel plate) material into a ring shape. On both side surfaces (front and back surfaces) of the clutch plate 107, a friction material made of a plurality of paper pieces (not shown) is attached, and an oil groove (not shown) is formed between the friction materials. 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 clutch oil guide 108 is formed integrally with the clutch center 105 between the connecting portion 105a and the meshing portion 105c on the flange portion 105b of the clutch center 105. As shown in FIG. 2, the clutch oil guide 108 is a part for guiding clutch oil (not shown) supplied from the driven shaft 114 to the oil guide hole 105d of the meshing part 105c. It is formed in a wall-like shape on the flange portion 105b in a state of being connected to the meshing portion 105c.

In this case, the clutch oil guide body 108 is formed such that the meshing portion 105c side extends linearly behind the coupling portion 105a side in the rotational driving direction of the clutch center 105 (see the broken arrow in the figure). Further, the clutch oil guide body 108 is formed so as to expand from the connecting portion 105a side so as to include a range in which the oil guide hole 105d in the meshing portion 105c is formed (see FIG. 1). A plurality (four in this embodiment) of the clutch oil guide bodies 108 are formed along the circumferential direction of the clutch center 105 on the flange portion 105b.

The pressure plate 109 is a component for bringing the friction plate 103 and the clutch plate 107 into close contact with each other by pressing the friction plate 103, 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 109 has an outer edge portion that presses the friction plate 103, 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 109 is formed with four bosses 109a projecting in the axial direction of the clutch center 105 along the circumferential direction on the disk surface. Each boss portion 109a is a portion to which a flat plate-shaped pressure plate 109 is fixedly attached by a bolt 109b, and is formed in a columnar shape that penetrates a through hole formed in the flange portion 105b of the clutch center 105. On each outer peripheral portion of these four boss portions 109a, springs 111 are provided between the lifter plate 110 and the flange portion 105b of the clutch center 105, respectively. The spring 111 is an elastic body for pressing the pressure plate 109 against the friction plate 103 by pressing the lifter plate 110 against the flange portion 105b. In this embodiment, the spring 111 is a coil spring in which spring steel is spirally wound. It consists of

A release pin 113 passes through the center of the lifter plate 110 via a bearing 112. The release pin 113 is a rod-like component that presses the lifter plate 110 when the transmission state of the rotational driving force of the clutch device 100 is in a disconnected state, and one end (right side in the drawing) has an end portion on the clutch release mechanism (not shown). While being connected, the other end (left side in the figure) is slidably fitted in an oil supply hole 114 a provided in the driven shaft 114. Here, the clutch release mechanism is a mechanical device that presses the release pin 112 toward the driven shaft 114 by an 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 114 is a component for transmitting the rotational driving force transmitted by the clutch device 100 to the driven body and supplying clutch oil (not shown) into the clutch device 100. The steel material is turned into a hollow shaft body. Formed and configured. More specifically, an oil supply hole 114 a through which clutch oil flows along the axial direction is formed inside the driven shaft 114. In the driven shaft 114, the clutch center 105 is spline-fitted to one end (right side in the figure), and a part of the release pin 113 is slidable in the axial direction and the circumferential direction in the oil supply hole 114a. Are mated.

In this case, the oil supply hole 114a that opens on one side (the right side in the figure) of the driven shaft 114 is fitted to the release pin 113 with a clearance fit tolerance, and the clutch oil in the oil supply hole 114a supplies the oil. It is formed so as to leak through a gap between the hole 114a and the release pin 113. On the other hand, the other end (left side in the figure) of the driven shaft 114 is connected to a transmission and a clutch oil supply pump (not shown) in the self-propelled vehicle. An oil branch hole 114 b that branches from the oil supply hole 114 a and supplies a part of the clutch oil to the bush 102 is formed in the driven shaft 114.

(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), the clutch release mechanism (not shown) does not press the release pin 113. Therefore, the pressure plate 109 presses the friction plate 103 by the elastic force of the spring 111. Thus, the clutch center 105 is in a state in which the friction plate 103 and the clutch plate 107 are displaced toward the receiving portion 105e of the clutch center 105 and pressed against each other, and in other words, are in a frictionally connected state. And the receiving portion 105e are rotationally driven by sandwiching the friction plate 103 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 114 is rotationally driven.

In this case, the clutch oil constantly leaks from the gap between the oil supply hole 114a of the driven shaft 114 and the release pin 113 little by little as shown by the broken line arrow in FIG. For this reason, part of the clutch oil leaking from the opening at the end of the oil supply hole 114a of the driven shaft 114 falls downward in the figure and the other part of the nut 106b, the washer 106a and the connecting part 105a. It flows through. A part of the clutch oil transmitted through the nut 106b, the washer 106a, and the connecting portion 105a is shaken off radially outward by the centrifugal forces of the nut 106b, the washer 106a, and the connecting portion 105a that are rotationally driven.

A part of the clutch oil released from the driven shaft 114, the nut 106b, the washer 106a, and the connecting part 105a directly reaches the meshing part 105c of the clutch center 105, and the other part of the clutch oil is driven to rotate. The clutch oil guide 108. In this case, the clutch oil guide body 108 is formed so that the meshing portion 105c side extends rearward in the rotational driving direction of the clutch center 105 with respect to the coupling portion 105a side, and therefore the clutch oil guide body 108 extends in the radial direction. Compared to the case where the clutch oil is provided, the reaction force of the collision of the clutch oil can be reduced, and the attached clutch oil can be guided to the meshing portion 105c side with high accuracy. Then, the clutch oil reaching or guided to the meshing portion 105c is guided to the friction plate 103 and the clutch plate 107 through the oil guide hole 105d to lubricate and cool the friction plate 103 and the clutch plate 107.

On the other hand, when the vehicle driver (not shown) operates a clutch operation lever (not shown), the clutch device 100 presses the release pin 113 so that the pressure is reduced. The plate 109 is displaced in a direction away from the receiving portion 105 e against the elastic force of the spring 111. As a result, the clutch center 105 is in a state in which the frictional connection between the friction plate 103 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, the clutch oil constantly leaks from the gap between the oil supply hole 114a of the driven shaft 114 and the release pin 113 little by little as shown by the broken line arrow in FIG. Therefore, when the driven shaft 114 is rotationally driven, a part of the clutch oil transmitted through the nut 106b, the washer 106a, and the connecting portion 105a is rotated in the same manner as described above. It is shaken off radially outward by each centrifugal force of 105a. A part of the clutch oil released from the driven shaft 114, the nut 106b, the washer 106a, and the connecting part 105a directly reaches the meshing part 105c of the clutch center 105, and the other part is the same as described above. It is guided to the meshing part 105c side through the clutch oil guide body 108.

Further, when the rotational drive of the driven shaft 114 is stopped, a part of the clutch oil leaking from the opening of the end of the oil supply hole 114a of the driven shaft 114 falls directly downward in the figure and directly After reaching the meshing part 105c, the other part passes through the nut 106b, the washer 106a and the coupling part 105a, and then is guided to the meshing part 105c through the flange part 105b, the clutch oil guide 108, and the like. Then, the clutch oil reaching or guided to the meshing portion 105c is guided to the friction plate 103 and the clutch plate 107 through the oil guide hole 105d to lubricate and cool the friction plate 103 and the clutch plate 107.

As can be understood from the above description of the operation, according to the above-described embodiment, the clutch device 100 includes the coupling portion 105a and the meshing portion 105c of the clutch center 105 coupled to the driven shaft 114 via the coupling portion 105a. A wall-like clutch oil guide body 108 extending rearward in the rotational drive direction of the clutch center 105 is formed between the clutch oil and the clutch oil supplied from the driven shaft 114 when the clutch oil contacts the clutch oil guide body 108. The clutch oil can be guided to the meshing portion 105c side while reducing the force (resistance). As a result, the clutch device 100 can efficiently guide the clutch oil supplied from the driven shaft 114 to the friction plate 103 and the clutch plate 107 to improve the transmission efficiency of the driving force and the lubrication performance of the clutch oil.

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 components as those of the clutch device 100 in the above embodiment are denoted by the same reference numerals or symbols with “′” added to the reference numerals attached to the clutch device 100, Description is omitted.

For example, in the above embodiment, a plurality of clutch oil guide bodies 108 are formed along the circumferential direction of the clutch center 105. However, at least one clutch oil guide 108 may be formed along the circumferential direction of the clutch center 105. In addition, the clutch oil guide body 108 is formed in a straight line shape in the above-described embodiment, but the engagement portion 105c side is formed to extend in a curved shape behind the coupling portion 105a side in the rotational drive direction of the clutch center 105. You can also

Further, in the above embodiment, the clutch oil guide body 108 is formed in a wall shape connected to the connecting portion 105a and the meshing portion 105c. As a result, the clutch oil guide body 108 functions as a rib for connecting and reinforcing the connecting portion 105a and the engaging portion 105c in addition to guiding the clutch oil to the engaging portion 105c, and is connected to the flange portion 105b. This functions as a rib for reinforcing the flange portion 105b. However, the clutch oil guide body 108 is not necessarily limited to the above-described embodiment as long as the clutch oil guide body 108 is formed in a wall shape standing between the connecting portion 105a and the meshing portion 105c.

Therefore, as shown in FIGS. 3 and 4, for example, the clutch oil guide body 108 is connected to the connecting portion 105a and not connected to the engaging portion 105c, and is not connected to the connecting portion 105a. It can be set as the structure connected. According to these, it is possible to reduce the weight of the clutch center 105 while reinforcing the connecting portion 105a or the meshing portion 105. Further, the clutch oil guide body 108 extends to the vicinity of the meshing portion 108 and is not connected to the meshing portion 108, so that the fluidity of the clutch oil accumulated on the meshing portion 105c side can be ensured. .

Further, the clutch oil guide body 108 may be configured not to be connected to the connecting portion 105a and the meshing portion 105c. In addition, when the clutch oil guide body 108 is configured to be connected to the coupling portion 105a and the meshing portion 105c, a gap may be provided between the clutch oil guide body 108 and the flange portion 105b so that the clutch oil guide body 108 is not connected to the flange portion 105b.

Further, in the above embodiment, the clutch oil guide body 108 is formed so as to expand from the connecting portion 105a side so as to include the range where the oil guide hole 105d in the meshing portion 105c is formed. Thereby, the clutch oil guide body 108 can guide the clutch oil to the plurality of oil guide holes 105d formed in the meshing portion 105c. However, the clutch oil guide body 108 may be formed toward a part of the plurality of oil guide holes 105d formed in the meshing portion 105c. For example, in the clutch device 100, the temperature of the engine side portion of the clutch device 100 may be increased by heat from the engine. Therefore, for example, as shown in FIG. 5, the clutch oil guide body 108 is formed toward the oil guide hole 105d formed on the side where the temperature tends to increase (for example, the input gear 104 side). It is also possible to positively guide the clutch oil to the oil guide hole 105d.

Further, in the above-described embodiment, a so-called pull type (also referred to as “inner cut type”) clutch device that blocks the transmission state of the rotational driving force of the engine by pressing the lifter plate 110 via a clutch release mechanism (not shown). The present invention was applied to 100. However, according to the present invention, the transmission state of the rotational driving force of the engine is interrupted by directly pressing or pulling the clutch device 100 of a type other than the so-called pull type (also referred to as “inner cutting type”), for example, the pressure plate 109. The present invention can also be applied to a push-type (also referred to as “outer cut type”) clutch device 100.

The so-called push-type clutch device 100 ′ mainly includes, for example, a clutch housing 101 ′, a friction plate 103 ′, a clutch center 105 ′, a clutch plate 107 ′, and a clutch oil guide body 108 as shown in FIGS. ', A pressure plate 109', a release pin 113 'and a driven shaft 114' are provided. Since this clutch device 100 ′ has the same configuration as the clutch device 100 in the above-described embodiment, parts corresponding to the clutch device 100 are denoted by the reference numerals with “′” and different from the clutch device 100. Only the relevant part will be explained.

The clutch center 105 ′ includes a connecting portion 105a ′, a flange portion 105b ′, and a meshing portion 105c ′ similar to the coupling portion 105a, the flange portion 105b, the meshing portion 105c, the oil guide hole 105d, and the receiving portion 105e in the above embodiment. An oil guide hole 105d, a receiving portion 105e ', and a clutch oil guide body 108' are provided. In this case, the receiving portion 105e 'is provided on the bottom side (the left side in the drawing) of the housing portion 101b' formed in a cup shape in the clutch housing 101 '. Further, four boss portions 109a 'corresponding to the four boss portions 109a in the above-described embodiment are formed between the four clutch oil guide bodies 108' at the flange portion 105b 'in the clutch center 105'. The clutch center 105 'is fastened and fixed to the outer periphery of the driven shaft 114' by a nut 106b.

The pressure plate 109 ′ is a component for bringing the friction plate 103 and the clutch plate 107 into close contact with each other by pressing the friction plate 103. The pressure plate 109 ′ has an outer diameter that is substantially the same as the outer diameter of the clutch plate 107. It is formed by forming a substantially disk shape. On the surface of the pressure plate 109 ′, four long hole-shaped accommodation portions 109 b ′ are formed along the circumferential direction. The accommodating portion 109c 'is a cylindrical portion that protrudes toward the clutch center 105' side (the left side in the drawing). The boss portion 109a ′ is fitted in the housing portion 109c ′, and the spring 111 ′ corresponding to the spring 111 in the above embodiment is fitted to the outer periphery of the boss portion 109 ′ and the bottom portion of the boss portion 109a ′ and the boss portion. It is provided in a state of being sandwiched between receiving washers 109d ′ disposed at the tip of 109a ′.

The receiving washer 109d ′ is a metal flat plate annular member for regulating the amount of displacement of the pressure plate 109 ′ in the direction away from the clutch center 105 ′, and the tip of the boss portion 109a ′ by the bolt 109b ′. It is attached to the part. As a result, the pressure plate 109 ′ is attached in a state in which the pressure plate 109 ′ can be displaced in the direction approaching and separating from the clutch center 105 ′ and the friction plate 103 is pressed by the spring 111 ′.

The release pin 113 ′ is a shaft that pulls the pressure plate 109 ′ to the right side in the drawing by being pulled in a direction (right side in the drawing) away from the driven shaft 114 ′ by a clutch release mechanism (not shown) similar to the above embodiment. One end (the left side in the figure) is slidably fitted into the oil supply hole 114a ′ of the driven shaft 114 ′ with a clearance tolerance. Further, a flange-like return portion 113a 'for hooking on a clutch release mechanism (not shown) is formed at the other end (right side in the drawing) of the release pin 113'. The clutch device 100 'does not require the lifter plate 110.

In the clutch device 100 ′ configured as described above, like the clutch device 100 in the above embodiment, the clutch device 100 does not operate a clutch operation lever (not shown) by a vehicle driver (not shown). In this case, since the clutch release mechanism (not shown) does not pull the release pin 113 ′, the pressure plate 109 ′ presses the friction plate 103 ′ by the elastic force of the spring 111 ′. As a result, the clutch center 105 ′ is in a state in which the friction plate 103 ′ and the clutch plate 107 ′ are displaced toward the receiving portion 105e ′ of the clutch center 105 ′ and are pressed against each other to be frictionally connected. The rotational driving force is transmitted to the clutch center 105 ′, and the driven shaft 114 ′ is rotationally driven.

In this case, the clutch oil always leaks little by little from the gap between the oil supply hole 114a 'of the driven shaft 114' and the release pin 113 'as shown by the broken arrow in FIG. For this reason, part of the clutch oil leaking from the opening at the end of the oil supply hole 114a ′ of the driven shaft 114 ′ falls downward in the figure, and the other part of the clutch oil leaks from the nut 106b ′ and the connecting portion 105a ′. It flows through. Then, a part of the clutch oil transmitted through the nut 106b 'and the connecting portion 105a' is shaken off radially outward by the centrifugal forces of the nut 106b 'and the connecting portion 105a that are rotationally driven.

A part of the clutch oil released from the driven shaft 114 ′, the nut 106b ′, and the connecting part 105a ′ directly reaches the meshing part 105c ′ of the clutch center 105 ′, and the other part of the clutch oil is rotationally driven. It collides with the clutch oil guide 108 'of the center 105'. In this case, the clutch oil guide body 108 ′ is formed such that the engagement portion 105c ′ side extends rearward in the rotational driving direction of the clutch center 105 ′ with respect to the coupling portion 105a ′ side. As compared with the case where the oil is extended in the radial direction, the reaction force of the collision of the clutch oil can be suppressed to be small, and the attached clutch oil can be guided to the meshing portion 105c ′ side with high accuracy. Then, the clutch oil that reaches or is guided to the meshing portion 105c ′ is guided to the friction plate 103 ′ and the clutch plate 107 ′ through the oil guide hole 105d ′ to lubricate the friction plate 103 ′ and the clutch plate 107 ′. Cooling.

On the other hand, the clutch device 100 ′ has a clutch release mechanism (not shown) that pulls the release pin 113 ′ when a vehicle driver (not shown) operates a clutch operation lever (not shown). The pressure plate 109 ′ is displaced in a direction away from the receiving portion 105e ′ against the elastic force of the spring 111 ′. As a result, the clutch center 105 ′ is in a state in which the frictional connection between the friction plate 103 ′ and the clutch plate 107 ′ is eliminated, and thus the rotational drive is attenuated or the rotational drive is stopped. That is, the rotational driving force of the prime mover is interrupted with respect to the clutch center 105 '.

In this case, the clutch oil always leaks little by little from the gap between the oil supply hole 114a 'of the driven shaft 114' and the release pin 113 'as shown by the broken arrow in FIG. For this reason, when the driven shaft 114 ′ is rotationally driven, a part of the clutch oil transmitted through the nut 106b ′ and the connecting portion 105a ′ is rotated by the nut 106b ′ and the connecting portion 105a ′ that are rotationally driven. Are swung away radially outward by each centrifugal force. A part of the clutch oil released from the driven shaft 114 ′, the nut 106b ′, and the connecting part 105a ′ directly reaches the meshing part 105c ′ of the clutch center 105 ′, and the other part of the clutch oil. Similarly, it is guided to the meshing portion 105c ′ side through the clutch oil guide body 108 ′.

In addition, when the rotational drive of the driven shaft 114 ′ is stopped, a part of the clutch oil leaking from the opening at the end of the oil supply hole 114a ′ of the driven shaft 114 ′ falls downward in the figure. Then, after directly reaching the meshing part 105c ′ and another part is transmitted through the nut 106b ′ and the coupling part 105a ′, the meshing part 105c ′ is transmitted through the flange part 105b ′, the clutch oil guide body 108 ′ and the like. Led to. Then, the clutch oil that reaches or is guided to the meshing portion 105c ′ is guided to the friction plate 103 ′ and the clutch plate 107 ′ through the oil guide hole 105d ′ to lubricate the friction plate 103 ′ and the clutch plate 107 ′. Cooling. That is, the clutch device 100 ′ can obtain the same effects as the clutch device 100 in the above embodiment.

In the above embodiment, the clutch device 100 is configured to supply clutch oil from the oil supply hole 114a formed in the driven shaft 114 (the same applies to the clutch device 100 '). That is, in the above embodiment, the driven shaft 114 is configured to have the oil supply hole 114a for supplying clutch oil into the clutch device 100 (the clutch device 100 'is also the same). However, the present invention can be widely applied to a so-called wet type clutch device in which clutch oil is present in the clutch device 100. Therefore, the

clutch devices

100 and 100 ′ do not necessarily need to be supplied with clutch oil from the driven

shafts

114 and 114 ′, but supply clutch oil from other portions (separately provided pipes for supplying clutch oil). Alternatively, a predetermined amount of clutch oil may be sealed in the

clutch devices

100 and 100 ′. In these cases, the

clutch devices

100 and 100 ′ guide the clutch oil scattered or misted in the

clutch devices

100 and 100 ′ to the meshing

portions

105c and 105c ′ by the clutch

oil guide bodies

108 and 108 ′. it can.

100, 100 '... Clutch device, 101, 101' ... Clutch housing, 101a, 101a '... Tubular part, 101b, 101b' ... Housing part, 102, 102 '... Bush, 103, 103' ... Friction plate, 104, 104 '... input gear, 104a, 104a' ... torque damper, 104b, 104b '... rivet, 105,105' ... clutch center, 105a, 105a '... connecting portion, 105b, 105b' ... flange portion, 105c, 105c ' ... meshing part, 105d, 105d '... oil guide hole, 105e, 105e' ... receiving part, 106a ... washer, 106b, 106b '... nut, 107, 107' ... clutch plate, 108, 108 '... clutch oil guide , 109, 109 '... Pressure plate, 109a 109a '... boss part, 109b, 109b' ... bolt, 109c '... accommodating part, 109d' ... receiving washer, 110 ... lifter plate, 111,111 '... spring, 112, 112' ... bearing, 113,113 '... release Pin, 113a '... return portion, 114, 114' ... driven shaft, 114a, 114a '... oil supply hole, 114b, 114b' ... oil branch hole.

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 coupling portion coupled to the driven shaft and a meshing portion that meshes with the inner peripheral portion of the clutch plate and has an oil guide hole for guiding clutch oil to the clutch plate outside the coupling portion. When,
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,
The clutch center is
The wall portion is formed between the connecting portion and the meshing portion, and the meshing portion side of the wall body is formed to extend rearward in the rotational driving direction of the clutch center with respect to the connecting portion side. A clutch device characterized in that a clutch oil guide body is provided.
In the clutch device according to claim 1,
The clutch oil guide body is
A plurality of clutch devices are provided along a circumferential direction of the clutch center.
In the clutch device according to claim 1 or 2,
The clutch oil guide 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 clutch center is
A plurality of oil guide holes are formed along the axial direction of the driven shaft;
The clutch oil guide body is
A clutch device characterized in that the clutch device is connected within a range in which the plurality of oil guiding holes are formed in the meshing portion.