JP4968285B2 - Clutch device - Google Patents

Description

  The present invention relates to a clutch device, and more particularly to a clutch device having an engagement member that engages a release fork having an engagement fulcrum portion slidably engaged with a support portion.

  In general, a clutch device is interposed between the internal combustion engine and the transmission in order to connect and disconnect the power transmitted from the internal combustion engine mounted on the vehicle such as an automobile to the transmission. Is known as shown in FIG. 10 (see, for example, Patent Document 1).

  In FIG. 10, an input shaft 3 of the transmission 2 is rotatably provided in the transmission case 1, and a clutch disk 4 is attached to the tip of the input shaft 3. A flywheel 6 is attached to a crankshaft 5 of an internal combustion engine (not shown), and the flywheel 6 faces the clutch disc 4.

  Further, a pressure plate 7 is opposed to the clutch disk 4, and a radially outer end of the diaphragm spring 8 is brought into contact with the pressure plate 7.

  The diaphragm spring 8 is attached to a fulcrum portion 9 a of a clutch cover 9 fixed to the flywheel 6, and a radially inner end thereof is in contact with the release bearing 10.

  The release bearing 10 is movable in the axial direction of the input shaft 3, and the lower end portion of the release fork 11 is engaged with the release bearing 10. An upper end portion of the release fork 11 protrudes outward from the transmission case 1 through an opening 1a formed in the transmission case 1, and is engaged with a clutch cable 12 as an operation member. It is connected to a clutch pedal provided in the passenger compartment.

  A concave engagement fulcrum part 11 a is formed below the release fork 11, and the engagement fulcrum part 11 a slides on a release support 1 b that is a support part provided inside the transmission case 1. Engage freely.

  Further, the release fork 11 is engaged with the release support 1b by a clip 13, and the clip 13 is engaged with an opening hole 11b formed in the release fork 11 at the upper end in the extending direction (see FIG. 11). The lower end of the extending direction abuts against the back surface of the release support 1b, so that the engagement fulcrum part 11a of the release fork 11 is pressed against the surface of the release support 1b, and the release fork 11 is engaged with the engagement fulcrum part 11a. It has become.

  Further, a spring 14 is interposed between the transmission case 1 and the upper end of the release fork 11, and this spring 14 biases the release fork 11 in the clockwise direction with the engaging fulcrum 11a as a fulcrum. Thus, the clutch pedal 12 is always urged to the undepressed position side of the clutch pedal. The opening 1 a is covered with a dust boot 15, and dust, water, and the like are prevented from entering the transmission case 1 from the opening 1 a by the dust boot 15.

  Among the components described above, the clutch disc 4, the flywheel 6, the pressure plate 7, the diaphragm spring 8, the clutch cover 9, the release bearing 10, the release fork 11 and the clip 13 constitute a clutch device.

  In the clutch device having such a configuration, when the clutch pedal is not depressed, the release fork 11 is urged in the clockwise direction by the spring 14 with the engaging fulcrum portion 11a as a fulcrum. The lower end of the diaphragm does not urge the diaphragm spring 8 via the release bearing 10.

  At this time, since the diaphragm spring 8 biases the pressure plate 7 toward the flywheel 6, the clutch disk 4 is pressed against the flywheel 6, and the clutch device is engaged by the friction force generated between the clutch disk 4 and the flywheel 6. In this state, power is transmitted from the crankshaft 5 (internal combustion engine) to the input shaft 3 (transmission 2).

  On the other hand, when the clutch pedal is depressed, the release fork 11 is swung counterclockwise around the engagement fulcrum portion 11a by the clutch cable 12, so that the lower end portion of the release fork 11 inputs the release bearing 10. The shaft 3 is moved to the right in the axial direction, and the radial inner end of the diaphragm spring 8 is pressed.

  For this reason, the diaphragm spring 8 releases the pressure of the pressure plate 7, the pressing force between the clutch disk 4 and the flywheel 6 is released, and the frictional force between the clutch disk 4 and the flywheel 6 is reduced. The flywheel 6 leaves.

  For this reason, the clutch device is disengaged, and the power transmission from the internal combustion engine to the transmission 2 is cut off. The transmission 2 has a plurality of speed change gear trains, and the power of the internal combustion engine is converted in accordance with the driving conditions by switching the speed changes by a shift lever (not shown) and meshing the gears of each speed. Remove and drive the drive wheels.

  By the way, in this clutch device, the engagement fulcrum part 11a of the release fork 11 is slidably engaged with the release support 1b, and the release fork 11 is swung around the engagement fulcrum part 11a. Therefore, it is possible to prevent the generation of noise on the sliding surface between the engagement fulcrum part 11a and the release support 1b and to reduce the sliding resistance between the engagement fulcrum part 11a and the release support 1b. A lubricant such as grease is injected between the portion 11a and the release support 1b.

Japanese Utility Model Publication No. 5-79062

  However, in such a conventional clutch device, the lubricant is injected between the engagement fulcrum portion 11a and the release support 1b. Since leakage may occur from between the release supports 1b, it is necessary to periodically maintain the clutch device by injecting a lubricant between the engagement fulcrum portion 11a and the release support 1b.

  At this time, it is necessary to remove the clip 13 from the release fork 11 and to separate the release fork 11 from the release support 1b. However, since the clip 13 is in a position where it cannot be operated from the opening 1a inside the transmission case 1, In order to remove 13, it is necessary to remove the clutch device from the transmission case 1 and remove the clip 13 from the release fork 11, and the maintenance work of the clutch device for injecting lubricant is very troublesome. It has become.

  In order to solve such a problem, a special resin material having lubricity is used for the engagement fulcrum part 11a and the release support 1b, or the lubricant leaks between the engagement fulcrum part 11a and the release support 1b. It is conceivable that the maintenance work for injecting the lubricant is unnecessary by using boots for preventing the friction, but in this case, the structure of the clutch device becomes complicated. As a result, the manufacturing cost of the clutch device increases.

  The present invention has been made in order to solve the above-described conventional problems, and can prevent the structure from being complicated and increase the manufacturing cost, and can inject a lubricant. It is an object of the present invention to provide a clutch device that can easily perform maintenance work.

  In order to achieve the above object, a clutch device according to the present invention includes (1) a case having an opening, an end engaged with a clutch member provided inside the case, and the opening from the case through the opening. The other end projecting outward and engaged with the operation member, and the engagement provided between the other end and the one end and slidably engaged with the support provided inside the case A release fork including a fulcrum, and the release fork is engaged with the support at an arbitrary position in the extending direction, and is detachable from a first attachment / detachment provided on the release fork. An engaging member having a second attaching / detaching portion, wherein the engaging fulcrum portion of the release fork is separated from the support portion when the second attaching / detaching portion is detached from the first attaching / detaching portion; And extending the engagement member And it is configured at one end portion from that is extended toward the outside of the case.

  With this configuration, one end portion in the extending direction of the engaging member extends toward the outside of the case, so that one end portion in the extending direction of the engaging member extends from the outside of the case through the opening or outside the case. The second attachment / detachment portion of the engagement member can be detached from the first attachment / detachment portion of the release fork, and the engagement fulcrum portion of the release fork can be separated from the support portion of the case.

  For this reason, the clutch device can be maintained by easily injecting a lubricant between the engagement fulcrum portion of the release fork and the support portion of the case with the clutch device attached to the case. The workability can be improved.

  Further, after the injection of the lubricant, the one end of the engaging member in the extending direction can be easily grasped through the opening from the outside of the case or on the outside of the case. The portion can be attached to the first detachable portion of the release fork, and the engaging member can be easily engaged with the release fork.

  In addition, a special resin material having lubricity is used for the engagement fulcrum part of the release fork and the support part of the case as in the past, or the lubricant leaks from between the engagement fulcrum part of the release fork and the support part of the case. Since it is possible to eliminate the need for using boots to prevent the clutch device from being complicated, the structure of the clutch device is prevented from becoming complicated, and the manufacturing cost of the clutch device is prevented from increasing. Can do.

In the clutch device according to the above (1), (2) one end portion in the extending direction of the engaging member extends from the first attaching / detaching portion toward the outer side of the case. Yes.
With this configuration, the second attachment / detachment portion of the engagement member is attached to the first attachment / detachment portion of the release fork by holding the one end portion of the engagement member in the extending direction through the opening from the outside of the case or outside the case. Thus, the workability of the maintenance work of the clutch device can be further improved.

In the clutch device according to (2) above, (3) one end portion in the extending direction of the engaging member extends from the opening to the outside of the case.
With this configuration, it is possible to attach and detach the second attachment / detachment portion of the engagement member to / from the first attachment / detachment portion of the release fork by grasping one end portion in the extending direction of the engagement member outside the case. The workability of the maintenance work can be further improved.

  In the clutch device according to the above (1), (4) the second attaching / detaching portion is provided at one end portion in the extending direction of the engaging member, and the first attaching / detaching portion is disposed on the case more than the opening. It is comprised from what was provided in the site | part of the said release fork of the outside.

  With this configuration, one end in the extending direction of the engaging member constituting the second attaching / detaching portion is gripped outside the case, and the second attaching / detaching portion of the engaging member is attached to and detached from the first attaching / detaching portion of the release fork. That is, the second attachment / detachment portion can be directly attached / detached from the first attachment / detachment portion outside the case, and the workability of the maintenance work of the clutch device can be further improved.

  In the clutch device according to the above (1) to (4), (5) in a state where the second attachment / detachment portion of the engagement member is attached to the first attachment / detachment portion of the release fork, The release fork is installed such that the distance between one of the peripheral edges of the opening and the release fork is larger than the distance between the other peripheral edge of the opening of the case and the release fork, The release fork is provided with the first attaching / detaching portion so that one end portion in the extending direction is located between one of the peripheral edges of the opening of the case and the release fork.

  With this configuration, the release fork is arranged so that the distance between one of the peripheral edges of the case opening and the release fork is greater than the distance between the other peripheral edge of the case opening and the release fork during maintenance of the clutch device. The release fork is provided with the first detachable portion so that one end of the engaging member in the extending direction is positioned between one of the peripheral edges of the opening of the case and the release fork. The second attaching / detaching portion of the engaging member can be detached from the first attaching / detaching portion of the release fork by grasping one end portion in the extending direction of the combined member, thereby further improving the workability of the maintenance work of the clutch device. Can do.

  According to the present invention, there is provided a clutch device that can prevent the structure from becoming complicated and prevent an increase in manufacturing cost, and can easily perform a maintenance work for injecting a lubricant. can do.

It is a figure showing a 1st embodiment of a clutch device concerning the present invention, and is a sectional view of a clutch device. It is a figure which shows 1st Embodiment of the clutch apparatus which concerns on this invention, (a) is a front view of a release fork, (b) is a side view of a release fork. It is a figure which shows 1st Embodiment of the clutch apparatus which concerns on this invention, (a) is a front view of a clip, (b) is a side view of a clip. It is a figure which shows 1st Embodiment of the clutch apparatus which concerns on this invention, (a) is a front view of the release fork which shows the state which attached the clip to the release fork, (b) is a clip for a release fork. It is a side view of the release fork which shows the attached state. It is a figure which shows 1st Embodiment of the clutch apparatus which concerns on this invention, and is sectional drawing of a clutch apparatus which shows the state which performs the maintenance of a clutch apparatus. It is a figure which shows 1st Embodiment of the clutch apparatus which concerns on this invention, and is sectional drawing of the clutch apparatus which has a clip of another shape. It is a figure which shows 2nd Embodiment of the clutch apparatus which concerns on this invention, and is sectional drawing of a clutch apparatus. It is a figure which shows 2nd Embodiment of the clutch apparatus which concerns on this invention, and is a front view of the release fork which shows the state which attached the clip to the release fork. It is a figure which shows 3rd Embodiment of the clutch apparatus which concerns on this invention, and is sectional drawing of a clutch apparatus. It is sectional drawing of the conventional clutch apparatus. It is a front view of the conventional release fork which shows the state which attached the clip to the release fork.

Hereinafter, embodiments of a clutch device according to the present invention will be described with reference to the drawings.
(First embodiment)
FIGS. 1-6 is a figure which shows 1st Embodiment of the clutch apparatus based on this invention.
First, the configuration will be described.
In FIG. 1, a clutch device 26 is housed between a crankshaft 24 of the internal combustion engine 21 and an input shaft 25 of the transmission 22 in a transmission case (case) 23 of the transmission 22 on the internal combustion engine 21 side. Yes.

  The clutch device 26 includes a flywheel 27, a clutch disk 28, a diaphragm spring 29, a clutch cover 30, a pressure plate 31, a release bearing 32, a release fork 33, and a clip 34.

  The flywheel 27 is fixed to the crankshaft 24 by flywheel fixing bolts 35, and the clutch cover 30 is fixed to the flywheel 27 by cover fixing bolts 36.

  The clutch disk 28 is spline-fitted to the input shaft 25 so as to be movable in the axial direction of the input shaft 25, and the clutch disk 28 is provided in the clutch cover 30. One face of the facing 37 of the clutch disk 28 faces the flywheel 27, and the other face of the facing 37 of the clutch disk 28 faces a pressure plate 31 provided in the clutch cover 30.

  The diaphragm spring 29 is provided in the clutch cover 30, and this diaphragm spring 29 is supported by a diaphragm support portion 38 provided in the clutch cover 30, and its radially outer end abuts on the pressure plate 31. The radially inner end is engaged with the release bearing 32.

  For this reason, the diaphragm spring 29 is configured such that the radially outer end and the radially inner end move relatively in the axial direction of the input shaft 25 around the diaphragm support portion 38 at the radially intermediate portion. .

  The release bearing 32 is engaged with a bearing support portion 39 of the transmission case 23 so as to be axially movable. The release bearing 32 is formed in a cylindrical shape, and one end portion in the axial direction is an inner end in the radial direction of the diaphragm spring 29. The lower end of the release fork 33 is engaged with the other end in the axial direction.

  The release fork 33 is inserted into the transmission case 23 through an opening 23a formed in the transmission case 23, and is formed at both ends in the width direction of the flat plate 33A and the flat plate 33A as shown in FIGS. Side plate 33B.

In the release fork 33, a lower end 33a of a flat plate 33A that is one end is formed in a forked shape, the lower end 33a engages with the release bearing 32, and an upper end 33b of the flat plate 33A that is the other end is a transmission. It protrudes outward from the case 23 through the opening 23 a and engages with one end of the clutch cable 40. In the present embodiment, the release bearing 32 constitutes a clutch member.
The other end of the clutch cable 40 is connected to a clutch pedal (not shown) provided in the vehicle interior, and the clutch cable 40 constitutes an operation member.

  A concave engagement fulcrum 33c is formed below the flat plate 33A of the release fork 33, that is, between the lower end 33a and the upper end 33b of the flat plate 33A. It is slidably engaged with a release support 41 as a support portion provided in the machine case 23.

  The release support 41 includes a hemispherical hemisphere portion 41a and a hemispherical portion 41a, and includes a shaft portion 41b fixed to the transmission case 23. The release support 41 is engaged with the spherical surface A of the hemispherical portion 41a. The portion 33c is engaged.

  As shown in FIGS. 3 and 4, the clip 34 has a pair of plate-like members 34 </ b> A and 34 </ b> B that are formed in a V shape and have an elastic force in the approaching and separating directions. The lower end portions 34a of the plate-like members 34A and 34B are connected to each other, and the lower end portion 34a is engaged with an engagement hole 33d formed at the root of the bifurcated portion of the lower end portion 33a of the release fork 33.

A bent portion 34b that is bent in the axial direction of the input shaft 25 is formed below the plate-like members 34A and 34B. The bent portion 34b sandwiches the shaft portion 41b so as to sandwich the back surface of the hemispherical portion 41a. B is engaged.
That is, the clip 34 according to the present embodiment supports the release fork 33 by the lower end portion 34a and the bent portion 34b of the plate members 34A and 34B provided at arbitrary positions in the extending direction of the plate members 34A and 34B. The release fork 33 is fixed to the release support 41 so that the release fork 33 is not detached from the release support 41.

  The plate-like members 34A and 34B are formed with bent portions (second detachable portions) 34c that are bent in the direction in which the plate-like members 34A and 34B are separated from each other. It can be freely attached to and detached from an engagement hole (first attaching / detaching portion) 33e formed in 33B.

  Further, an upper end portion 34d which is one end portion of the plate-like members 34A and 34B of the clip 34 extends in the outward direction of the transmission case 23 from the opening portion 23a of the transmission case 23. 34 d extends from the engagement hole 33 e toward the outside of the transmission case 23. Further, the upper end portion 34d is bent in the axial direction of the input shaft 25, and a sufficient area is secured to hold the upper end portions 34d of the plate-like members 34A, 34B with the fingers of the operator.

  The opening 23a of the transmission case 23 is covered with a dust boot 42, and dust, water, and the like are prevented from entering the transmission case 23 from the opening 23a by the dust boot 42.

A spring 43 is interposed between the transmission case 23 and the upper end portion 33b of the release fork 33. The spring 43 attaches the release fork 33 counterclockwise with the engagement fulcrum portion 33c as a fulcrum. (Pressing)
The reason why the release fork 33 is urged counterclockwise by the spring 43 with the engaging fulcrum 33c as a fulcrum is as follows.
When a clockwise force is applied to the release fork 33 with the engaging fulcrum 33c as a fulcrum, a clockwise force is applied to the lower end 33a of the release fork 33. When the clutch pedal is depressed, the responsiveness is deteriorated.
In the present embodiment, the spring 43 urges the release fork 33 with a small force in the counterclockwise rotation direction with the engaging fulcrum portion 33c as a fulcrum, and urges the lower end portion 33a of the release fork 33 in the counterclockwise rotation direction. This eliminates backlash between the lower end 33a of the release fork 33 and the release bearing 32, thereby preventing the responsiveness from deteriorating when the clutch pedal is depressed.
Instead of the spring 43, an upper end portion 33b of the release bearing 33 may be provided so as to urge the release fork 33 in the counterclockwise rotation direction, and a tension spring that pulls to the left in FIG. A tension spring that pulls the clutch cable 40 to the left in FIG. 1 may be provided.

Next, the operation will be described.
When the clutch pedal is not depressed, the release fork 33 is urged counterclockwise by the spring 43 with the engagement fulcrum 33c as a fulcrum, so the lower end 33a of the release fork 33 exerts a small urging force on the release bearing 32. It is energized with. Since this urging force is small, the urging force that deforms the diaphragm spring 29 by the release bearing 32 is not generated.

  At this time, since the diaphragm spring 29 urges the pressure plate 31 toward the flywheel 27, the clutch disk 28 is pressed against the flywheel 27, and the clutch device 26 is moved by the frictional force generated between the clutch disk 28 and the flywheel 27. The engaged state is established, and power is transmitted from the crankshaft 24 (internal combustion engine 21) to the input shaft 25 (transmission 22).

  On the other hand, when the clutch pedal is depressed, the release fork 33 is swung counterclockwise by the clutch cable 40 with the engagement fulcrum 33c as a fulcrum, so that the lower end 33a of the release fork 33 is connected to the release bearing 32. The input shaft 25 is moved to the right in the axial direction, and the radial inner end of the diaphragm spring 29 is pressed.

  For this reason, the pressure of the pressure plate 31 by the diaphragm spring 29 is released, the pressing force between the clutch disk 28 and the flywheel 27 is released, the frictional force between the clutch disk 28 and the flywheel 27 is reduced, and the clutch disk 28 The flywheel 27 leaves.

  For this reason, the clutch device 26 is disengaged, and the power transmission from the internal combustion engine 21 to the transmission 22 is cut off. The transmission 22 has a plurality of speed change gear trains, and the power of the internal combustion engine 21 is converted in accordance with the driving conditions by switching the speeds by means of a shift lever (not shown) and meshing the gears of each speed. Take out and drive the drive wheel.

  Here, in the clutch device 26 of the present embodiment, the engagement fulcrum portion 33c of the release fork 33 is slidably engaged with the hemispherical portion 41a of the release support 41, and the release fork 33 is set with the engagement fulcrum portion 33c as a fulcrum. Therefore, it is possible to prevent the generation of noise on the sliding surface between the engaging fulcrum portion 33c and the hemispherical portion 41a and to reduce the sliding resistance between the engaging fulcrum portion 33c and the hemispherical portion 41a. In order to reduce, a lubricant such as grease is injected between the engagement fulcrum portion 33c and the hemispherical portion 41a.

  However, since the lubricant may leak from between the engagement fulcrum portion 33c and the hemispherical portion 41a with the passage of time, the lubricant is injected between the engagement fulcrum portion 33c and the hemispherical portion 41a. Maintenance is required.

Hereinafter, the maintenance work of the clutch device 26 will be described.
First, the dust boot 42 and the spring 43 are removed from the transmission case 23 to expose the opening 23 a of the transmission case 23. In the present embodiment, since the upper end portions 34d of the plate-like members 34A and 34B extend outward from the opening 23a of the transmission case 23, the plate-like member 34A is located outside the transmission case 23. 34B, when the plate members 34A and 34B are elastically deformed in the approaching direction, the bent portions 34c of the plate members 34A and 34B are disengaged from the engagement holes 33e of the release fork 33.

  At this time, the lower end portions 34a of the plate members 34A and 34B are engaged with the engagement holes 33d of the release fork 33, and the bent portions 34b of the plate members 34A and 34B sandwich the shaft portion 41b. Since the hemispherical portion 41 a is engaged with the rear surface B, the release fork 33 is not engaged with the release support 41 and does not come off the release support 41.

Therefore, when the operator grips the upper end portion 33b of the release fork 33, the operator can swing about the engagement fulcrum portion 33c as a fulcrum. It moves so that it may contact | abut to the peripheral edge 23b (refer FIG. 5).
At this time, since a gap is defined between the engagement fulcrum portion 33c of the release fork 33 and the hemispherical portion 41a of the release support 41, the engagement fulcrum portion 33c and the hemispherical portion 41a of the transmission case 23 are opened. Fill with a lubricant such as grease.

  When the lubricant filling operation is completed, the operator grasps the upper end portion 33b of the release fork 33 and uses the release fork 33 as the fulcrum, with the release fork 33 as the fulcrum, on the transmission 22 side of the opening 23a of the transmission case 23, That is, after moving to the one peripheral edge 23c side of the opening 23a and engaging the bent portion 34c of the plate-like members 34A and 34B with the engagement hole 33e of the release fork 33, the opening 23a is covered. The dust boot 42 is attached to the transmission case 23, and then the spring 43 is attached to the release fork 33 and the transmission case 23.

  As described above, in the present embodiment, the upper ends 34d of the plate-like members 34A and 34B constituting the clip 34 are extended outward from the opening 23a of the transmission case 23. The upper end portions 34d of the plate-like members 34A, 34B can be gripped in the direction, and the bent portions 34c of the plate-like members 34A, 34B are removed from the engagement holes 33e of the release fork 33 to engage the engagement fulcrum portion 33c of the release fork 33. Can be separated from the hemispherical portion 41 a of the transmission case 23.

  For this reason, in a state where the clutch device 26 is attached to the transmission case 21, a lubricant is easily injected between the engagement fulcrum portion 33 c of the release fork 33 and the hemispherical portion 41 a of the transmission case 23. Maintenance can be performed, and the workability of the maintenance work of the clutch device 26 can be improved.

  As in the prior art, a special resin material having lubricity is used for the engagement fulcrum 33c of the release fork 33 and the hemispherical portion 41a of the transmission case 23, or the engagement fulcrum 33c of the release fork 33 and the transmission case. Thus, it is unnecessary to use a boot for preventing the lubricant from leaking from between the hemispherical portions 41a of the 23, and the structure of the clutch device 26 is prevented from becoming complicated, and the manufacturing cost of the clutch device 26 is reduced. Can be prevented from increasing.

  In the present embodiment, the upper ends 34d of the plate-like members 34A and 34B extend outward from the opening 23a of the transmission case 23 with respect to the engagement holes 33e. The bent portion 34c of the clip 34 can be directly attached to and detached from the engagement hole 33e of the release fork 33 by directly gripping the upper ends 34d of the plate-like members 34A and 34B on the outer side of the plate 23. Workability can be further improved.

In the present embodiment, the upper ends 34d of the plate-like members 34A and 34B extend outward from the opening 23a of the transmission case 23. However, the present invention is not limited to such a configuration. Since the operator only needs to be able to grip the upper ends 34d of the plate members 34A, 34B, the plate members 34A, 34A, 34B, even if the upper ends 34d of the plate members 34A, 34B are below the opening 23a of the transmission case 23. The upper end 34d of 34B may be extended to a position where the operator can hold it (see FIG. 6).
That is, the upper end portions 34d of the plate members 34A, 34B may be extended toward the outside of the transmission case 23 so that the operator can grasp the upper end portions 34d of the plate members 34A, 34B. It is.

(Second Embodiment)
FIGS. 7 and 8 are views showing a second embodiment of the clutch device according to the present invention. The same reference numerals are given to the same components as those in the first embodiment, and the description thereof will be omitted.
7 and 8, a bent portion 34e, which is a second attaching / detaching portion, is formed at the upper end portions of the plate-like members 34A and 34B, and this bent portion 34e is formed on the upper end portion 33b side of the release fork 33. The engagement hole 33f, which is the first attaching / detaching portion, is detachable.

  The engagement hole 33f is formed on the upper end 33b side of the release fork 33 protruding outward from the opening 23a of the transmission case 23, and the bent portion 34e is formed on the transmission case 23 more than the opening 23a. It extends outward.

  As described above, in the present embodiment, the bent portion 34e is provided at the upper end portion of the plate-like members 34A and 34B, and the engagement hole 33f is provided at a portion of the release fork 33 outside the opening portion 23a of the transmission case 23. Since the bent portions 34e of the plate-like members 34A and 34B are gripped outside the transmission case 23, the bent portions 34e can be attached to and detached from the engagement holes 33f of the release fork 33. That is, the transmission case The bent portion 34e can be directly attached to and detached from the engagement hole 33f of the release fork 33 outside the portion 23, and the workability of the maintenance work of the clutch device 26 can be further improved.

(Third embodiment)
FIG. 9 is a diagram showing a third embodiment of the clutch device according to the present invention. The same reference numerals are given to the same components as those in the first embodiment, and the description will be omitted.

  In the present embodiment, as shown in FIG. 9, in the state where the bent portions 34 c of the plate-like members 34 A and 34 B constituting the clip 34 are attached to the engagement holes 33 e of the release fork 33, the transmission case 23 is opened. The release fork 33 is installed so that the distance S1 between the one peripheral edge 23c of the portion 23a and the release fork 33 is larger than the distance S2 between the other peripheral edge 23b of the opening 23a and the release fork 33. An engagement hole 33e is provided in the release fork 33 so that the upper end portion 34d of the shaped members 34A, 34B is located between the peripheral edge 23c of the opening 23a and the release fork 33.

For this reason, the distance S1 between the peripheral edge 23c of the opening 23a of the transmission case 23 and the release fork 33 can be increased during maintenance in which a lubricant is injected between the engagement fulcrum portion 33c and the hemispherical portion 41a. The upper ends 34d of the plate members 34A, 34B are gripped in a wide working space, the plate members 34A, 34B are bent so that the plate members 34A, 34B are close to each other, and the bent portions 34c are engaged with the engagement holes of the release fork 33. Since it can remove from 33e, the workability | operativity of the maintenance operation | work of the clutch apparatus 26 can be improved further.
In this embodiment, the clutch cable 40 is used as the operation member, but a release cylinder or the like may be used.

  The embodiment disclosed this time is illustrative in all respects and is not limited to this embodiment. The scope of the present invention is shown not by the above description of the embodiments but by the scope of the claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of the claims.

  As described above, the clutch device according to the present invention can prevent the structure from becoming complicated and increase the manufacturing cost, and easily perform maintenance work for injecting the lubricant. And a clutch having an engaging member for engaging a release fork having an engagement fulcrum portion slidably engaged with the support portion. It is useful as a device.

23 Transmission case (case)
23a Opening 23b Periphery 26 Clutch device 32 Release bearing (clutch member)
33 Release fork 33a Lower end (one end)
33b Upper end (other end)
33c engagement fulcrum part 33e engagement hole (first attachment / detachment part)
34 clips (engaging members)
34c Bent part (second attachment / detachment part)
34d upper end (extension direction one end)
34e bent part (one end in the extending direction)
40 Clutch cable (operation member)

Claims (4)

A case having an opening, one end engaged with a clutch member provided inside the case, the other end protruding outward from the case through the opening and engaging the operation member, and the other A release fork configured to include an engagement fulcrum portion provided between an end portion and the one end portion and slidably engaged with a support portion provided inside the case; and an arbitrary extension direction The release fork is engaged with the support portion at the position, and the second attachment / detachment portion is detachably attached to the first attachment / detachment portion provided on the release fork, and the second attachment / detachment portion is attached to the first attachment / detachment portion. An engagement member configured to separate the engagement fulcrum portion of the release fork from the support portion when removed from the detachable portion of 1;
Clutch apparatus extending direction end portion of the engaging member, characterized in that extending outwardly of said first of said case than detachable portion. The assembly as set forth in claim 1, the extending direction end portion of the engaging member, than said opening, characterized in that extending to the outside way of the case. The second attaching / detaching portion is provided at one end portion in the extending direction of the engaging member, and the first attaching / detaching portion is provided at a portion of the release fork outside the case from the opening. The clutch device according to claim 1. In a state where the second attachment / detachment portion of the engagement member is attached to the first attachment / detachment portion of the release fork, the distance between one of the peripheral edges of the opening of the case and the release fork The release fork is installed so as to be larger than the distance between the other peripheral edge of the opening and the release fork, and one end portion in the extending direction of the engaging member is one of the peripheral edges of the opening of the case and the release The clutch device according to any one of claims 1 to 3 , wherein the release fork is provided with the first attaching / detaching portion so as to be positioned between the fork and the fork .

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