JPH0222500Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Purpose of the invention (1) Industrial application field The present invention is a clutch disk for frictionally connecting a drive plate connected to an engine crankshaft and a transmission input shaft in a vehicle clutch, in particular, a friction plate having a pair of disc parts coupled to face each other; a disc hub interposed between both disc parts so as to be rotatable relative to them; both disc parts and the disc hub capable of facing each other; a plurality of torque damper accommodating portions each formed of a plurality of approximately rectangular windows arranged in a circumferential direction; a torque damper disposed in the torque damper accommodating portion; and a torque damper located on the front side in the rotational direction of the friction plate; a fixed retainer plate interposed between the front radial inner surface of the accommodating section and one end surface of the torque damper; the rear radial inner surface of the torque damper accommodating section and the torque damper, which are located on the rear side in the rotational direction of the friction plate; a movable retainer plate interposed between the other end faces of the window; a first eave portion is provided at each outer edge located on the radially outer side of the window of both disc portions; and a first eave portion is provided on each outer edge located radially inwardly of the window of both disc portions. Relating to an improvement in which second eaves parts are respectively provided, the first and second eaves parts are opposed to the outer surfaces of both retainer plates, and both retainer plates are externally fixed by the first and second eaves parts. .

(2) Prior Art Conventionally, in the clutch disk, the fixed and movable retainer plates are respectively fitted into windows of the disk hub, and the first and second eaves portions are in contact with the outer surfaces of both retainer plates.

(3) Problems to be solved by the invention However, with the above configuration, when the large rotational torque of the crankshaft is buffered by the torque damper, both first eaves portions slide against the outer surface of the fixed retainer plate. In addition, since the outer surface of the movable retainer plate slides against the outer circumferential inner surface of the window in the disk hub, the frictional force generated in these sliding parts deteriorates the buffering characteristics and reduces the vibration isolation effect. This may cause noise, noise, etc.

An object of the present invention is to provide a clutch disc having a simple structure capable of solving the above-mentioned problems.

B. Structure of the invention (1) Means for solving the problem The invention consists of a friction plate having a pair of disc parts connected to face each other; a plurality of torque damper accommodating portions each formed of a plurality of substantially rectangular windows arranged in a circumferential direction so as to face each other in both the disc portions and the disc hub; disposed in the torque damper accommodating portion; a fixed retainer plate located on the front side in the rotation direction of the friction plate and interposed between the front radial inner surface of the torque damper accommodating portion and one end surface of the torque damper; and the rear of the friction plate in the rotation direction. a movable retainer plate interposed between the rear radial inner surface of the torque damper accommodating portion and the other end surface of the torque damper, the outer edge being located on the radial outer side of the window of both disk portions; A first eave portion is provided at each of the retainer plates, and a second eave portion is provided at each of the outer edges located on the inner side in the radial direction. In the clutch disk in which both retainer plates are externally fixed by two eaves portions, from the intermediate portion of the radially outer outer circumferential inner surface and the radially inner inner circumferential inner surface defining the window of the disk hub to the front side. The fixed retainer plate is positioned by bringing the outer surface of the fixed retainer plate into contact with the portion reaching the radial inner surface, and a deformed portion is formed in the portion extending from the intermediate portion of both first eaves portions to the front radial inner surface. is provided between the outer surface of the fixed retainer plate and both first eaves portions.
A gap is formed to avoid sliding of the eaves part, and the outer surface of the movable retainer plate is connected to a portion extending from the intermediate part of both the first eaves parts to the inner surface in the rear radial direction and both the second eaves parts.
The movable retainer plate is positioned by contacting with the eaves portion, and a cutout portion is provided at a portion extending from the intermediate portion of the outer circumferential inner surface defining the window of the disk hub to the rear radial inner surface. Accordingly, a gap is formed between the outer surface of the movable retainer plate and the outer circumferential inner surface to avoid sliding of the outer surface with respect to the outer circumferential inner surface.

(2) Effect As mentioned above, there is a gap between the outer surface of the fixed retainer plate and both first eaves parts, and between the outer surface of the movable retainer plate and the outer circumferential inner surface of the window in the disk hub. When the torque damper is used to buffer the large rotational torque of the crankshaft,
Since the sliding of both first eaves parts with respect to the fixed retainer plate and the sliding of the movable retainer plate with respect to the outer circumferential inner surface of the window are avoided, good damper characteristics are obtained and generation of jitter, abnormal noise, etc. is prevented. can do.

Moreover, since one of the gaps is formed by deforming a part of both the first eaves parts, and the other gap is formed by notching a part of the outer circumferential inner surface, both the first eaves parts The non-deformed portion of the window can be used for positioning the movable retainer plate, and the non-cut portion of the outer circumferential inner surface of the window can be used for positioning the fixed retainer plate.

(3) Embodiment As shown in FIGS. 1 and 2, the clutch disk D includes an annular friction plate 1 and a disk hub 3 connected to the annular friction plate 1 via a plurality of torque dampers 2.

The friction plate 1 includes a pair of disc parts 1a and 1b facing each other and connected by a plurality of pins 4, and an inner peripheral part overlapping the outer peripheral part of one disc part 1b and joined by a plurality of pins 5. It consists of a lining part 1c.

The disk hub 3 includes a boss portion 6 and a boss portion 6.
The boss portion 6 is spline-fitted to the transmission input shaft 8. The flange part 7 has a thick part 7a connected to the boss part 6 and a thin part 7b located outside the thick part 7a, and the thick part 7a has both disc parts 1a and 1b.
The thin portion 7b is inserted loosely between the disk portions 1a and 1b.

As clearly shown in FIG. 3, a plurality of substantially rectangular windows 9 ₁ , 9 ₂ , 9 ₃ are arranged in the circumferential direction in both the disc parts 1 a and 1 b and the thin wall part 7 b of the disc hub 3 so as to face each other. The windows 9 ₁ to 9 ₃ constitute a plurality of torque damper accommodating portions 9 .

The torque damper 2 is made of rubber and is disposed in each torque damper accommodating portion 9.

The friction plate 1 rotates in the direction of arrow a in FIGS. 1 and 5, and the front radial inner surface 10 1 of the torque damper accommodating portion 9 and one end surface of the torque damper 2 are located on the front side in the rotational direction of the friction plate ₁ . Between,
A fixed retainer plate 11 ₁ is interposed. In addition, the rear radial inner surface 10 ₂ of the torque damper accommodating portion 9 and the torque damper 2 are located on the rear side of the friction plate 1 in the rotational direction.
A movable retainer plate 11 ₂ is interposed between the other end faces of the retainer plate 11 2 .

Both retainer plates 11 ₁ and 11 ₂ have the same shape,
A circular portion 12 and a pair of hook-shaped portions 1 bent from opposite peripheral edge portions of the circular portion 12 to face each other.
3 ₁ , 13 ₂ , and both retainer plates 11 ₁ , 1
1 ₂ is arranged such that the hook-shaped portions 13 ₁ and 13 ₂ thereof face each other. A positioning protrusion 14 is provided protruding from the center of the circular portion 12, and the positioning protrusion 14 is fitted into a positioning recess 15 on the end surface of the torque damper 2.

Both hook-shaped portions 13 ₁ of each retainer plate 11 ₁ , 11 ₂ ,
13 ₂ is sandwiched between both disc parts 1a and 1b of friction plate 1 so as to be able to slide relatively, and the circular part 12 projects from windows 9 ₁ and 9 ₂ of both disc parts 1a and 1b, respectively. do.

Both disc portions 1a and 1b have first eaves portions 16 1 and 16 2 that protrude outward on the outer edges located on the radially outer side of the windows 9 ₁ and 9 ₂ , and have first eaves portions 16 ₁ and 16 ₂ that protrude outwardly on the radially inner side. A second eave portion 17 protruding outward on the outer edge located
_{1,172 .} The eaves portions 16 ₁ , 16 ₂ and 17 ₁ , 17 ₂ face the outer surface of the circular portion 12 .

As clearly shown in FIG. 2, both first eaves portions 16 ₁ ,
16 ₂ and the outer surface of the circular portion 12 of the position retainer plate 11 ₁ and the outer surface of the proximal end of the hook-shaped portion _{13 1 .}
While avoiding sliding of the eaves portions 16 ₁ and 16 ₂ 〓g ₁ is formed.

The gap g ₁ is formed by providing a deformed portion 16a in a region extending from the intermediate portion of both first eaves portions 16 ₁ and 16 ₂ to the front radial inner surface 10 ₁ . both second
The eaves portions 17 ₁ and 17 ₂ contact the outer surface of the circular portion 12 of the fixed retainer plate 11 ₁ .

As shown in FIGS. 1 and 4, the movable retainer plate 11
Between the outer surface of one hook-shaped portion 13 ₁ located on the radially outer side of the disk portion ₂ and the outer circumferential inner surface 9 a of the window 9 ₃ in the disk hub 3, a hook-shaped portion is provided for the outer circumferential inner surface 9 a of the disk hub 3 . 13 While avoiding the sliding of ₁ , 〓g ₂ is formed.

The gap _〓g2 is formed by providing a cutout portion n at a portion extending from the intermediate portion of the outer circumferential inner surface 9a to the inner radial inner surface ₁₀₂ . The outer surface of the other hook-shaped portion ₁₃₂ contacts the inner circumferential inner surface 9b.

The fixed retainer plate 11 ₁ is positioned by aligning the outer surfaces of both hook-shaped portions 13 ₁ and 13 ₂ with the outer and inner circumferential inner surfaces 9 a and 9 b of the window 9 ₃ in the disk hub 3, as shown in FIGS. 1 and 2. This is done by contacting each portion from the intermediate portion to the front radial inner surface 10 ₁ .

Further, the positioning of the movable retainer plate 11 ₂ is performed by the first,
As shown in FIG. 4, the outer surface of the circular portion 12 is connected to a portion 16b extending from the intermediate portion of both first eaves portions 16 ₁ and 16 ₂ to the rear radial inner surface 10 ₂ and both second eaves portions 17.
₂ , 17 ₂ by contacting it.

A notch 18 is provided in the flange portion 7 of the disk hub 3 in correspondence with each pin 4, and when the pin 4 comes into contact with the inner surface of the notch 18, the rotational torque buffering action is stopped.

In the above configuration, when the friction plate 1 is pressed between the driving plate and the pressure plate (both not shown) connected to the crankshaft of the engine (clutch-on state), when a load is applied to the engine, the crankshaft The large rotational torque can be buffered by the torque damper 2 and transmitted to the transmission input shaft 8 via the disk hub 3.

When the rotational torque is buffered by this torque damper 2,
As shown in FIG. 5, by rotating the friction plate 1 in the direction of the arrow a in _{FIG .}
moves in the circumferential direction relative to the fixed retainer plate 11 ₁ , but the first eaves portions 16 ₁ and 16 ₂ slide against the outer surface of the circular portion ₁₂ and the outer surface of the proximal end of the hook-shaped portion 13 1 during the above period. Avoided by g ₁ . In this case, both the disk parts 1a and 1b slide on both the hook-shaped parts 13 ₁ and 13 ₂ , but the outer hook-shaped part 13 ₁ and both the disk parts 1a,
There are few contact parts with 1b, and the inner hook-shaped part 1
_3. Since the amount of movement of both disc parts 1a and 1b is small for 32, no problem arises due to the frictional force between them.

Furthermore, as shown in FIG. 5, the movable retainer plate 11 ₂ is moved by the rotation of the friction plate 1, but the sliding of the outer hook-shaped portion 13 ₁ against the outer circumferential inner surface 9a of the window 9 ₃ in the disk hub 3 The motion is avoided by the interval _〓g2 . In this case, the inner hook-shaped portion 13 ₂ also moves, but the amount of movement is small, so the hook-shaped portion 1
3 ₂ and the inner circumferential inner surface 9b of the window 9 ₃ will not cause any problems due to frictional force.

As a result, the friction plate 1 and both retainer plates 11 ₁ , 1
1 ₂ and the disk hub 3 is suppressed as much as possible, so that normal buffering characteristics are obtained as shown by the solid line A in FIG. 6. The chain line B in FIG. 6 shows the conventional example, in which the buffering characteristics become abnormal due to the frictional force.

The limit of the rotational torque buffering effect is regulated by the pin 4 of the friction plate 1 coming into contact with the inner surface of the notch 18 of the disk hub 3.

The reason why the circumferential lengths of the torque dampers 2 adjacent to each other in the circumferential direction are changed is to change the buffering characteristics of each torque damper 2.

C. Effects of the invention According to the invention, when the large rotational torque of the crankshaft is buffered by the torque damper, both first eaves portions slide against the fixed retainer plate, and the movable retainer plate moves against the outer circumferential inner surface of the window in the disk hub. The sliding between the two parts is avoided by adjusting the distance between the two parts to obtain a normal buffering characteristic, thereby making it possible to prevent the occurrence of jitter, abnormal noise, etc.

Furthermore, the above effect can be obtained by deforming a part of both first eaves parts and cutting out the inner surface in the outer circumferential direction of the window in the disk hub, so that The desired purpose can be achieved by simply making changes, and the positioning of the movable and fixed retainer plates can be ensured by utilizing the non-deformed portions of both first eaves portions and the non-notched portions of the outer circumferential inner surface. Another advantage is that it can be done.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a front view of the entire clutch disk with main parts broken away, and FIG.
The figure is Fig. 1 - Line sectional view, Fig. 3 is Fig. 1 -
FIG. 4 is a cross-sectional view taken along lines taken from FIG. 1, FIG. 5 is a front view of main parts showing the function, and FIG. 6 is a graph showing buffer characteristics. g ₁ , g ₂ ... Between, n ... Notch part, 1 ... Friction plate, 1a, 1b ... Disc part, 2 ... Torque damper, 3 ... Disc hub, 9 ... Torque damper housing part, 9 ₁ to _{9 3} ... Window, 9a, 9b ... Outer side, inner circumferential inner surface, 10 ₁ , 10 ₂ ... Front side, rear radial inner surface, 11 ₁ , 11 ₂ ... Fixed and movable retainer plate, 16 ₁ , 16 ₂ ... 1st eave section, 16a ...
Deformed part, 17 ₁ , 17 ₂ ... second eave part.

Claims (1)

[Scope of utility model registration request] A pair of disc parts 1a and 1b that are coupled to face each other
a friction plate 1 having a friction plate 1; a disc hub 3 interposed between both disc parts 1a and 1b so as to be rotatable relative to them;
and; a plurality of torque damper accommodating portions 9 consisting of a plurality of substantially rectangular windows 9 ₁ to 9 ₃ formed side by side in the circumferential direction in both the disk portions 1a, 1b and the disk hub 3 so as to face each other; a torque damper 2 disposed in the torque damper accommodating portion 9; and the friction plate 1;
a fixed retainer plate 11 ₁ interposed between the front radial inner surface 10 ₁ of the torque damper accommodating portion 9 and one end surface of the torque damper 2, which is located on the front side in the rotation direction of the friction plate 1; a movable retainer plate 11 ₂ interposed between the rear radial inner surface 10 ₂ of the torque damper accommodating portion 9 and the other end surface of the torque damper 2;
First eaves portions 16 1 and 16 2 are provided at the outer edges of the windows 9 ₁ and 9 ₂ of both disc portions _1a and 1b located on the radially outer side _, respectively.
In addition, second eaves portions 17 ₁ and 17 ₂ are respectively provided on the outer edges located on the inside in the radial direction, and these first and second eaves portions 16 ₁ , 16 ₂ , 17 ₁ , 17 ₂ are connected to both retainer plates 11 _{1 .} , 11 ₂ and the first and second eaves portions 16 ₁ , 16 ₂ , 17 ₁ ,
In the clutch disk in which both the retainer plates 11 ₁ and 11 ₂ are externally fixed by means of 17 ₂ , an outer circumferential inner surface 9 a on the radially outer side and an inner circumferential surface on the radially inner side defining the window 9 ₃ of the disk hub 3 are provided. The fixed retainer plate 11 ₁ is provided at a portion extending from the intermediate portion of the inner surface 9b to the inner surface 10 ₁ in the front radial direction.
The fixed retainer plate 11 ₁ is positioned by bringing the outer surfaces of the first eaves portions 1 into contact with each other, and
From the intermediate part of 6 ₁ and 16 ₂ to the front radial inner surface 1
By providing the deformed portion 16a at the portion reaching 0 ₁ , between the outer surface of the fixed retainer plate 11 ₁ and both first eaves portions 16 ₁ , 16 ₂ , both first eaves portions 16 1 , 16 ₂ relative to the outer surface are provided. 16 ₂ to avoid sliding g ₁ , and the outer surface of the movable retainer plate 11 ₂ ,
A portion extending from the intermediate portion of both first eaves portions 16 ₁ and 16 ₂ to the rear radial inner surface 10 ₂ and both second eaves portions 1
7 ₁ , 17 ₂ to position the movable retainer plate 11 ₂ , and move the movable retainer plate 11 2 from the middle part of the outer circumferential inner surface 9 a that defines the window 9 ₃ of the disk hub 3 to the rear radial inner surface. 10 ₂
By providing a cutout portion n at a portion leading to the movable retainer plate ₁₁₂ , a gap is formed between the outer surface of the movable retainer plate 112 and the outer circumferential inner surface 9a to avoid sliding of the outer surface with respect to the outer circumferential inner surface 9a. 〓A clutch disc characterized by forming g ₂ .