JP3146915B2 - Clutch device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clutch device for turning on and off power from an engine.

[0002]

2. Description of the Related Art The power transmission system of a truck is usually constructed as shown in FIG.
As shown in FIG. 1, a structure is employed in which power from an engine 1 mounted on a front portion of a vehicle body is transmitted to a rear wheel 6 (drive wheel) via a clutch device 2, a transmission 3, a propeller shaft 4, and a differential device 5. . In the drawings, reference numeral 7 denotes a cab, 8 denotes a loading platform, and 9 denotes a front wheel (steering wheel).

A clutch device 2 used in such a vehicle
14, a flywheel 1 connected to the shaft end of a crankshaft 10 (output shaft of the engine 1) as shown in FIG.
1, a power transmission surface 12 is formed on the rear surface,
The clutch disk 14 is freely rotatable in the axial direction via the serrations 15 on the outer peripheral portion of the drive shaft 13 (the shaft serving as the input shaft of the transmission 3) rotatably supported by the a and disposed behind the crankshaft 10. And a pressure plate 1 is provided on the rear side of the clutch disk 14.
7, a structure is used in which the clutch disk 14 is constantly pressed against the flywheel 11 by the elastic force of the pressure spring 16. Reference numeral 18 denotes a clutch cover provided on the rear part of the flywheel 11, and 19 denotes a ring gear provided on the outer peripheral part of the flywheel 11.

The pressure plate 17 normally operates a release fork 17a by depressing a clutch pedal to release a release bearing 20 (spline, axial direction) provided on the outer periphery of the drive shaft 13 so as to be movable in the axial direction. The release lever 21 supported by the clutch cover 18 can be rotated to pull it back from the press-contact position to the release position. Thus, the clutch disk 14 is displaced to the on / off position so that the on / off operation of the power required for selecting a desired shift speed of the transmission 3 can be performed.

Incidentally, the clutch device 2 incorporated in the power transmission system of the vehicle includes a flywheel 11 serving as an output shaft end.
Since the drive shaft 13 serving as the input shaft end is divided into the transmission 3 side, the clutch disc 14 is normally positioned on the flywheel 11 in advance when assembling the clutch device 2. Thereafter, a clutch housing 3a formed at the front of the transmission 3 at the rear of the engine body 1a.
Is used.

[0006] By utilizing this coupling process, the end of the drive shaft 13 is inserted into the hub 14a of the clutch disk 14 to thereby provide the clutch disk 14 on the engine 1 side.
And a disk operation system 22 composed of a release bearing 20 of the transmission 3 and the like.

Specifically, conventionally, the clutch device 2 has been assembled as shown in FIGS.

That is, when assembling the clutch device 2, first, as shown in FIG. 15, the drive shaft 10 is attached by inserting the tip into a bearing 10a at the shaft end of the crankshaft 10. As in the case of the short-axis jig 23
Are assembled so as to protrude from the center of the crankshaft 10 along the axial direction.

The outer shape of the jig 23 has the same shape as the end of the drive shaft 10.

[0010] Next, the clutch disk 1 is provided by using serrations 23a formed on the outer peripheral portion of the jig 23.
The hub 14a of No. 4 is fitted into the outer peripheral portion of the jig 23, and the entire clutch disc is positioned at a predetermined position.

Then, the remaining pressure plate 17, clutch cover 18, and release lever 21 are assembled to the flywheel 11, and the positioned clutch plate 14 is held by the elastic force of the pressure spring 16. This means, for example, that the remaining parts are
Clutch cover 1 of the assembled parts
8 to the outer periphery of the flywheel 11 with bolts 24
, And the clutch plate 14 is clamped.

Thereafter, the jig 23 is removed from the hub 14a of the clutch disk 14 as shown by a two-dot chain line in FIG.

Then, as shown on the left side of FIG. 17, only the outer peripheral side of the clutch disk 14 is sandwiched, and the entire disk is held.

Thereafter, the end of the drive shaft 13 is inserted into the hub 14a of the clutch disk 14 while aligning the rear portion of the engine body 1a with the end of the clutch housing of the transmission 3, and the drive shaft 13 is located on the outer periphery of the drive shaft 13. The serrations 15 are spline-fitted to the serrations 14b on the inner surface of the hub 14a.

Next, when the rear portion of the engine body 1a and the clutch housing end of the transmission 3 match, the two are fastened with bolts and nuts (not shown), and as shown in FIG. The disk operation system 22 is combined.

By the way, the clutch disk 14 is provided with a means for suppressing torsional vibration which causes unnecessary noise and vibration in order to reduce unnecessary noise and vibration.

As means for suppressing the torsional vibration, a clutch disk body 14c having a split structure as shown in FIGS. 14 to 17 is conventionally used, and a spring constant is provided between the divided portions of the clutch disk body 14c. A structure is adopted in which a shock absorbing member, for example, various torsion springs 25 and 26, which is modified, is incorporated to be rotatable between the engine 1 side and the drive shaft 13 side.

In particular, there is a tendency to use a cushioning member having a considerably small spring constant, for example, a torsion spring 26 in combination, because an effective cushioning function can be obtained recently.

[0019] Such a clutch disc 14, (ii either soft), but for the spring constant of the cushioning member is small, the hub 14
The behavior in which the position of the hub 14a is shifted only by the loss of the member supporting the position a.

For this reason, at the time of the step of removing the jig 23 during the assembly of the clutch device 2, the position of the hub 14a of the clutch disk 14 positioned so as to exhibit a predetermined torsion characteristic may be shifted in the circumferential direction. .

In such a case, when the drive shaft 13 is inserted into the clutch disk 14 by changing the angle of the drive shaft 13 and the serration position, the conventional clutch device 2 is assembled with respect to the displaced hub 14a. After the drive shaft 13 is aligned with the drive shaft 13, the drive shaft 13 is fitted into the hub 14 a of the clutch disk 14.

[0022]

However, in this case, although the drive shaft 13 is certainly inserted into the clutch disk 14, the clutch disk 14, which is positioned at a predetermined position by the jig 23 in accordance with the torsion characteristics, does not have the original torsion. It is assembled to the drive shaft 13 without the characteristic but the shifted torsion characteristic.

For this reason, the clutch disk 14 incorporated in the conventional clutch device 2 has a large range of variation in torsional characteristics, and often does not exhibit a predetermined torsional characteristic.

In addition, when assembling, the complicated operation of adjusting the drive shaft 13 is required.

This problem becomes more serious with the double-plate clutch device 30 as shown in FIGS.

That is, the double-plate clutch device 30 comprises:
A plurality of, for example, two, clutch disks 14 are provided in parallel in the axial direction, and an intermediate plate 31 that moves forward and backward in conjunction with the pressure plate 17 is provided between the clutch disks 14, and the pressure plate 17 and the intermediate plate 31 Then, two clutch discs 14, 14
This is a device which can be moved forward and backward in the same manner as in the case of a single plate to connect / disconnect power from the engine 1.

However, the intermediate plate 31
Is supported by a flywheel ring 33 interposed between the flywheel 11 and the clutch cover 18 via, for example, a strap plate 32.

The double-plate clutch device 30 is different from the single-plate clutch device 2 except for the intermediate plate 31 and the plurality of clutch disks 14 except for the rear portion of the engine body 1a and the clutch housing 3a of the transmission 3. Since the spacer 34 is interposed between them and the end length of the drive shaft 13 is different, and the other is the same as the above-described single-plate type clutch device 2, the same parts as those of the clutch device 2 are denoted by the same reference numerals. The description is omitted.

Even with such a double-plate clutch device 30,
The assembly is the same as that of the single-plate clutch device 2.

That is, first, as shown in FIG. 19, the distal end is inserted into a bearing 10a at the shaft end of the crankshaft 10, and the short shaft is formed in the same manner as the drive shaft 10 is attached. Is assembled so as to protrude from the center of the crankshaft 10 along the axial direction.

The outer shape of the jig 35 is, of course,
Has the same shape as the shape of the end.

Next, using the serrations 35a formed on the outer peripheral portion of the jig 35, the hubs 14a of the two clutch disks 14, 14 are sequentially fitted to the outer peripheral portion of the jig 23. At the time of assembling the disc, the intermediate plate 31 and the flywheel ring 33 are incorporated so that the entire clutch disc is positioned at a predetermined position.

Next, as in the case of the single-plate clutch device 2, the remaining pressure plate 17, the clutch cover 1
8. The release lever 21 is mounted on the flywheel 11, and the two clutch plates 14, 14 positioned are held by the elastic force of the pressure spring 16.

Thereafter, the jig 35 inserted through the hub 14a of the clutch disks 14, 14, as shown by a two-dot chain line in FIG. 20, from the assembled clutch parts.
Remove.

Then, as shown on the left side of FIG. 21, the clutch disks 14, 14 are clamped only on the outer peripheral side, and the entire disk is held.

Thereafter, while aligning the rear portion of the engine body 1a with the clutch housing end of the transmission 3, the end of the drive shaft 13 is connected to the clutch disk 14,
14, the serrations 13a on the outer peripheral portion of the drive shaft 13 are spline-fitted to the serrations 14b on the inner surface of the hub 14a. At this time, the positions of the hubs 14a, 14a are For the reasons described when describing the single-plate type clutch device 2 described above, any one of them is shifted.

At this time, the transmission 3
Side), the position of the drive shaft 13 is adjusted as described above.
Drive shaft 13 is connected to hub 14a of clutch disk 14
Is inserted, but the clutch disk 14 on the back side (engine 1 side) is
4, it is difficult to see the state of displacement of the hub 14a (because it is difficult to see from the outside unlike the hub 14a on the front side), and it becomes difficult to insert the drive shaft 13.

That is, in the case of the double-plate type clutch device 2, not only the predetermined torsional characteristics cannot be obtained, but also the clutch device 2
Also poses the problem of considerable impairment.

In such a case, conventionally, the assembling operation is stopped, the clutch cover 18 is removed, the clutch disks 14 are reassembled, and then the drive shaft 13 on the transmission 3 side is attached to the clutch disks 14 on the engine side. The operation of inserting the end portion of was repeated until it was inserted in a predetermined manner.

For this reason, the assembling work of the double-plate type clutch device 2 is considerably troublesome, and there is a disadvantage that a considerable amount of working time is required, and the assembling work has been considerably avoided from the workers on the site.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a clutch device having a predetermined torsion characteristic and having a clutch disk with easy work.

[0042]

According to a first aspect of the present invention, an input shaft end of a transmission is rotatably supported on a shaft end of an output shaft of an engine.
And a main body shaft portion that is inserted into the front end shaft portion.
And the engine and transmission
Fit the hub of the clutch disc located between the tip shaft
Insert, between the end of the output shaft and the tip shaft, the tip shaft and the body
At least one between the shaft and the shaft
An elastic member for elastically regulating the displacement in the direction is interposed .

In addition to the above objects, the invention described in claim 2 provides a clutch so as to have a structure suitable for a double-plate clutch device .
Multiple latch disks are arranged in parallel in the axial direction.
It was made.

[0044]

[0045]

[0046]

[0047]

[0048]

[0049]

According to the first aspect of the invention, when assembling the clutch device, the distal end shaft portion is rotatably supported at the shaft end of the output shaft of the engine.

Next, the hub of the clutch disk is fitted into the tip shaft portion, and the entire clutch disk is positioned at a predetermined position.

Then, the main body shaft portion of the transmission may be fitted to the tip shaft portion in which the clutch disc is incorporated, so that the engine and the transmission are combined.

As a result, the clutch disc and the drive shaft are connected without using a jig which causes a displacement of the hub.

That is, the clutch disc is assembled with the drive shaft while being positioned so as to exhibit the originally prescribed torsional characteristics.

Therefore, the predetermined torsional characteristics of the clutch disk are incorporated in the clutch device.

In addition, assembling the clutch disc and the drive shaft requires only the tip of the main body shaft to be aligned with the tip of the hub positioned at a predetermined position. It is easy because it can be done without the need for complicated work of complicated adjustment. Besides,
Between the output shaft of the engine and the shaft of the transmission
The tip shaft portion disposed between them is pressed by the elastic force of the elastic member.
To prevent accidental displacement in the axial direction.
Is controlled.

According to the second aspect of the present invention, when assembling the double-plate clutch device, the tip shaft is rotatably supported on the shaft end of the output shaft of the engine, and then assembled.
A hub of a plurality of clutch disks is fitted into the tip shaft portion, and each clutch disk is positioned at a predetermined position.

Then, the main body shaft portion of the transmission may be fitted to the tip shaft portion of the clutch disk in which the hub is mounted so that the engine and the transmission are combined.

Thus, as described above, a plurality of clutch disks and the drive shaft are connected without using a jig which causes a displacement of the hub. And the engine
It is arranged between the power shaft and the shaft of the transmission.
The tip shaft part is pressed by the elastic force of the elastic member,
It is regulated so that it is not accidentally displaced in the axial direction.

[0059]

[0060]

[0061]

[0062]

[0063]

[0064]

[0065]

[0066]

[0067]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to a first embodiment shown in FIGS.

This embodiment shows a double-plate clutch device 30 to which the present invention is applied.

In the drawings, the same parts as those of the double-plate clutch device 2 described above are denoted by the same reference numerals, and description thereof will be omitted. In this section, different parts (main parts of the invention) will be described. explain.

In this embodiment, the structure of the end of the drive shaft 13 is different.

That is, a divided structure is adopted at the end of the drive shaft 13 of this embodiment.

More specifically, the end of the drive shaft 13 is divided into two parts, a tip shaft 40a also serving as a jig for positioning the clutch disks 14 and 14, and a main body shaft 40b on the main body side.

The tip shaft portion 40a has two clutch disks 1 on its outer peripheral surface as shown in FIGS.
It has a plurality of serrations 41 for supporting the shafts 4 and 14, and has a short axis shape having a small diameter shaft portion 42 at the tip end.

The small-diameter shaft portion 42 is
At the time of the step of positioning the four and the fourteen, it is inserted into a bearing 10a at the shaft end of the crankshaft 10. By this insertion, the entire tip shaft portion 40a is coaxially protruded rearward of the crankshaft 10.

At the center of the rear end surface of the tip shaft portion 40a, a fitting hole 44 having a plurality of serrations 43 on the inner peripheral surface is formed along the axial direction as shown in FIGS. It is.

Each hub 14a is fitted around the outer periphery of the tip shaft 40a, and the pressure spring 16 and the pressure plate 1 are provided around the tip shaft 40a.
7, the clutch cover 18, the release lever 21, and the intermediate plate 31 are assembled.

At the distal end of the main body shaft portion 40b, a fitting portion 45 is formed at the center as shown in FIGS.

The fitting portion 45 is a small-diameter shaft portion 4 protruding forward.
5a, and a serration 46 is formed on the outer peripheral surface to be combined with the serration 43 of the fitting hole 44.

The small-diameter shaft portion 45a is formed in the fitting hole 44 of the tip shaft portion 40a by using a process of assembling the drive shaft 13.
It is inserted in. By the spline fitting performed by the mutual combination of the serrations 43 and 46, the tip shaft portion 40a and the main body shaft portion 40b are coupled in the rotation direction, and the two clutch disks 14 and 14 and the transmission 3 With the disk operation system 22 of the first embodiment.

The tip surface of the small-diameter shaft portion 42 (the tip shaft portion 40
An elastic member, for example, a disc spring 47 is interposed between the front end of the crankshaft 10 and the end face of the crankshaft 10 in a compressed state.

Further, the step 4 formed at the base of the rear end face 48 of the front end shaft 42 and the small diameter shaft 45a opposed thereto.
9, an elastic member, for example, a coil spring 50 wound around the small diameter shaft portion 42 is interposed in a compressed state,
The entire tip shaft portion 40a is restricted from being accidentally displaced in the axial direction from being pressed by the elastic force (in cooperation with the disc spring 47).

Reference numeral 51 denotes an annular groove-shaped spring seat for receiving the end of the coil spring 50, which is formed on the periphery of the opening of the insertion hole 44 and around the root of the small-diameter shaft portion 45a.

When assembling the double-plate clutch device 30 constructed as described above, first, as shown in FIG.
Then, the small-diameter shaft portion 42 is inserted, and the tip shaft portion 40a is assembled. In this operation, a disc spring 47 is interposed between the crankshaft 10 and the small diameter shaft portion 42.

As a result, the tip shaft portion 40a is assembled so as to protrude rearward from the center of the crankshaft 10 along the axial direction.

Next, as shown in FIG. 3, the hubs 14a of the two clutch discs 14, 14 are sequentially fitted and inserted using the serrations 41 on the outer peripheral portion of the tip shaft section 40a. , 14 and an intermediate plate 31 is arranged between the clutch disks 14.

Next, as in the conventional process,
Pressure spring 16, pressure plate 17,
Release the clutch cover 18 with the release lever 21
Flywheel 11 with flywheel ring 33
The clutch disks 1 and 2 are clamped by the elastic force of a pressure spring 16 so that the outer peripheral portions of the two clutch disks 14 and 14 can be exerted with a predetermined torsional characteristic.
The whole of 4, 14 is positioned at a predetermined position.

When the assembly into the flywheel 11 is completed, the tip shaft 40a and the main body shaft 40b are aligned with each other, the engine 1 and the transmission 3 are butted, and the engine 1 and the transmission 3 are bolted ( (Not shown), the clutch disks 14 and 14 and the drive shaft 13 are connected without causing a positional shift.

That is, in this operation, first, the coil spring 50 is wound around the small diameter shaft portion 45a.

Next, the direction of the small-diameter shaft portion 45 is adjusted so that the cross-sectional shape of the small-diameter shaft portion 45a matches the opening shape of the fitting insertion hole 44.

Thereafter, the rear part of the engine body 1a and the clutch housing end of the transmission 3 are fitted.

At this time, the clutch disks 14, 14
Since the tip shaft portion 40a into which the is inserted is positioned at a predetermined position, the serration 46 on the outer peripheral portion of the small-diameter shaft portion 45a only needs to be aligned with the direction of the small-diameter shaft portion 45a. The splines are smoothly fitted to the existing serrations 43. In addition, along with this fitting, the coil spring 50 is connected to the rear end surface of the front end shaft portion 40a and the small diameter shaft portion 49.
Is interposed while being compressed with the root of the

[0092] By this spline fitting, the tip shaft 40
a and the main body shaft portion 40b are firmly connected, and the entire clutch discs 14, 14 are supported by the drive shaft 13 while maintaining the initial positioning state.

That is, the two clutch disks 14, 1
4 is coupled to the drive shaft 13 without using a jig which causes a positional shift of the hubs 14a, 14a.

This means that the two clutch disks 1
4 and 14 are combined with the drive shaft 13 while being positioned so as to exhibit the originally specified torsional characteristics.

Therefore, the clutch discs 30 having the predetermined torsion characteristics are incorporated into the clutch device 30, and the predetermined performance (the torsion characteristics obtained by the torsion springs 25 and 26 having large and small spring constants) is exhibited. Can be provided.

Further, assembling work between the clutch disk 14 and the drive shaft 13 can be performed as long as the front end of the main body shaft portion 40b is matched with the front end shaft portion 40a positioned at a predetermined position. It is easy because it can be performed without any complicated work such as complicated position adjustment according to the misalignment. Especially, it is hidden behind the clutch disk 14 on the near side, and the clutch disk 14 The double-plate type clutch device 30 to be disposed employs a structure in which the distal end portion of the main body shaft portion 40b is coupled to the distal end shaft portion 40a in which the clutch disks 14 and 14 are incorporated, so that the conventional repetitive work can be performed. Since the frequently required difficult adjustment work is completely eliminated, the work of assembling the plurality of clutch disks 14 and 14 with the drive shaft 13 becomes considerably easier. . In addition, the work time is considerably shortened.

In addition, a fitting hole 44 is provided at the shaft end of the tip shaft portion 40a, and a fitting insertion portion 45 is provided at the shaft end of the body shaft portion 40b, so that the tip shaft portion 40a and the body shaft portion 40b are joined. Can easily connect the distal end shaft portion 40a and the main body shaft portion 40b simply by aligning and inserting the protruding insertion portion 45 into the insertion hole 44 opened at the shaft end. . Of course, conversely, the fitting portion 45 may be provided on the tip shaft portion 40a, and the fitting hole 44 may be provided on the main body shaft portion 40b. In this case, the same effect is obtained.

In addition, if a structure is adopted in which these fitting holes 44 and fitting portions 45 are fitted with spline fitting,
With a simple structure, sufficient coupling strength between the distal end shaft portion 40a and the main body shaft portion 40b can be secured.

The distal end portion 40a is formed by a disc spring 48 and a coil spring 50 interposed between the end portions of the opposed crankshaft 10 and the distal end shaft portion 40a, and between the distal end portion 40a and the end portion of the main body shaft portion 40. In the structure for restricting elastically, the distal shaft portion 40a is not inadvertently displaced in the axial direction by pressing by the elastic force. Such behavior can be suppressed. Of course, the elastic member may be provided on one side of the distal end shaft portion 40a, not on both sides.

FIGS. 6 to 8 show a second embodiment of the present invention.

In this embodiment, the present invention is applied to the single-plate type clutch device 2.
Similar effects can be obtained.

The single-plate clutch device 2 is different from the double-plate clutch device 30 in that the intermediate plate 31, the plurality of clutch disks 14, and the spacers 34 are not provided as described in the conventional example, and that the drive shaft 13 are the same except for the end length, and therefore the same reference numerals are used and the description is omitted.

FIGS. 9 and 10 show a third embodiment of the present invention.

In this embodiment, different fitting holes 44 and different fitting portions 4 are provided.
5, which is a structure in which the distal end shaft portion 40a and the main body shaft portion 40b are connected.

That is, in this embodiment, the fitting hole 44 and the fitting portion 45 are not spline-fitted, but the fitting hole 44 is a square hole, and the fitting portion 45 can be fitted into the fitting hole 44. The fitting hole 44 and the fitting portion 45 are fitted together with a square fitting in a square prism shape.

Even with such a simple fitting structure, the tip shaft 4
Sufficient bonding strength can be ensured between Oa and main body shaft portion 40b.

However, FIGS. 9 (a) and 10 (a)
The fitting hole 44 and the fitting part 45 are fitted and the tip shaft part 40a is fitted.
FIG. 9B shows a state in which the main body shaft portion 40b is connected to the main body shaft portion 40b.
FIG. 10A shows a state in which the connection has been released.

FIGS. 11 and 12 show a fourth embodiment of the present invention.

In this embodiment, different insertion holes 44 and different insertion portions 4 are used.
5, which is a structure in which the distal end shaft portion 40a and the main body shaft portion 40b are connected.

That is, in this embodiment, the fitting member 44 and the fitting member 45 are not spline-fitted, but the key member 55 is implanted on the outer periphery of the small-diameter shaft part 45a. A key groove 56 for accommodating one side portion of the key member 55 protruding from the outer peripheral surface of the small-diameter shaft portion 45a is provided, and the fitting hole 44 and the fitting portion 45 are fitted with key fitting. It is.

Even with such a simple fitting structure, the tip shaft 4
Sufficient bonding strength can be ensured between Oa and main body shaft portion 40b.

However, FIGS. 11 (a) and 12 (a)
The tip shaft portion 4 has the fitting hole 44 and the fitting portion 45 fitted therein.
FIG. 11 shows a state in which the main body shaft portion 40a and the main body shaft portion 40b are combined.
FIG. 12B and FIG. 12A show a state in which the coupling is released.

[0113]

As described above, according to the first aspect of the present invention, it is possible to provide a clutch device in which a clutch disk is incorporated so that a predetermined torsional characteristic is exhibited by the split drive shaft structure. .

In addition, the operation of connecting the clutch disk and the drive shaft is as simple as inserting the transmission-side main body shaft portion into the tip shaft portion supported by the output shaft of the engine and to which the clutch disk is assembled. Therefore, it is easy and the working time is short. In addition, the tip shaft
However, the rattling behavior can be suppressed.

According to the second aspect of the present invention, it is suitable for a double-plate clutch device.

[0116]

[0117]

[0118]

[Brief description of the drawings]

FIG. 1 is a sectional view showing a double-plate clutch device according to a first embodiment of the present invention.

FIG. 2 is an exploded cross-sectional view for explaining a split structure at a drive shaft tip portion of the clutch device together with an initial assembly.

FIG. 3 is an exploded cross-sectional view showing steps when a clutch disk of the clutch device is assembled to an output shaft end of an engine at a tip shaft portion and when a main body shaft portion of a transmission is assembled to the tip shaft portion.

FIG. 4A is a perspective view showing a disassembled structure at a distal end of a drive shaft of the clutch device, in which a distal end shaft and a main body shaft are assembled. (B) is a perspective view of the same disassembled tip shaft portion and main body shaft portion.

FIG. 5A is a cross-sectional view illustrating a disassembled structure of a distal end portion of a drive shaft of the clutch device, in which a distal end shaft portion and a main body shaft portion are assembled. FIG. 3B is a cross-sectional view of the same disassembled distal end shaft portion and main body shaft portion.

FIG. 6 is a sectional view showing a single-plate clutch device according to a second embodiment of the present invention.

FIG. 7 is an exploded cross-sectional view for explaining a divided structure at a drive shaft tip portion of the clutch device together with initial assembly.

FIG. 8 is an exploded cross-sectional view showing steps when the clutch disc of the clutch device is assembled to the output shaft end of the engine at the tip shaft, and when the main body shaft of the transmission is assembled to the tip shaft.

FIG. 9A is a perspective view showing a main part of a third embodiment of the present invention, in which a front end shaft and a main body shaft are assembled for explaining an exploded structure at a front end of a different drive shaft. FIG.
(B) is a perspective view of the same disassembled tip shaft portion and main body shaft portion.

FIG. 10A is a cross-sectional view showing a state where a distal end shaft portion and a main body shaft portion are similarly assembled. FIG. 3B is a cross-sectional view of the same disassembled distal end shaft portion and main body shaft portion.

FIG. 11 (a) is a perspective view of a main shaft portion and a front shaft portion for explaining a disassembled structure at a front portion of a different drive shaft, which is a main portion of a fourth embodiment of the present invention. FIG.
(B) is a perspective view of the same disassembled tip shaft portion and main body shaft portion.

FIG. 12A is a cross-sectional view showing a state where a distal end shaft portion and a main body shaft portion are similarly assembled. FIG. 3B is a cross-sectional view of the same disassembled distal end shaft portion and main body shaft portion.

FIG. 13 is a cross-sectional view for explaining a structure around a single-plate clutch device conventionally used in a truck power transmission system.

FIG. 14 is a sectional view of a clutch device of the truck.

FIG. 15 is a cross-sectional view for explaining an initial operation of an assembling process using a jig, which has been conventionally performed by the clutch device.

FIG. 16 is a sectional view for explaining a step of removing the jig after assembling the clutch disk of the clutch device.

FIG. 17 is a cross-sectional view for explaining a step of assembling a transmission-side drive shaft with a clutch disk that has only been clamped by a pressure plate after the jig is removed.

FIG. 18 is a cross-sectional view illustrating a conventional double-plate clutch device.

FIG. 19 is a cross-sectional view illustrating an initial operation of an assembling process using a jig conventionally performed by the clutch device.

FIG. 20 is a sectional view for explaining a step of removing the jig after assembling the clutch disk of the clutch device.

FIG. 21 is a cross-sectional view for explaining a step of assembling a drive shaft on the transmission side with each clutch disc merely held by the pressure plate after the jig is removed.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Engine 2, 30 ... Clutch device 3 ... Transmission 10 ... Crankshaft (engine output shaft) 11 ... Flywheel 13 ... Drive shaft (transmission input shaft) 14 ... Clutch disk 17 ... Pressure plate 18 ... Clutch cover 20 ... Release bearing 22 ... Disk operation system 25, 26 ... Torsion spring 31 ... Intermediate plate 40a ... Tip shaft 40b ... Body shaft 44 ... Fitting insertion hole 45 ... Fitting insertion portion 47, 50 ... Disc spring, coil spring (elasticity) Element).

Claims (2)

(57) [Claims] 1. An input shaft end of a transmission is
Tip shaft part rotatably supported on the shaft end of the engine output shaft
And a main body shaft section that is inserted into the tip shaft section.
It is, disposed of between the engine and the transmission
The hub of the clutch disc to be inserted
Together with the, between the end portion and the tip end shaft portion of the output shaft, the distal shaft portion
And at least one of between the body shaft portion,
Elastic for elastically controlling the axial displacement of the tip shaft
A clutch device, wherein an elastic member is interposed . 2. A clutch disk according to claim 1, wherein said clutch disk is provided in plural in an axial direction.
2. The device according to claim 1, wherein the plurality of sheets are arranged in parallel.
The clutch device as described .