JPH0979285A - Damper disk assembly unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce wearing of a part sliding an elastic member of a clutch disk assembly unit. SOLUTION: A clutch disk assembly unit 1 is provided with plates 5, 6, spline hub 2 and a torsion spring 8. The plates 5, 6 are formed by cut raising, also a plurality of fine holes are formed, and cut raised parts 5a, 6a coated with a cemented layer are provided. The spline hub 2 is arranged relatively rotatably to the plates 5, 6. A flange part 2b of the spline hub 2 has a window hole 2d corresponding to the cut raised parts 5a, 6a. The torsion spring 8 is supported by the cut raised parts 5a, 6a and the window hole 2d, so as to connect the plates 5, 6 and the spline hub 2 in a circumferential direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a damper disk assembly, and more particularly to a damper disk assembly having an elastic member arranged in a support portion of a rotating plate.

[0002]

2. Description of the Related Art A clutch disc assembly used in, for example, a vehicle includes an input side plate, a clutch disc fixed to the input side plate, an output side hub having a flange on the outer periphery, an input side plate and an output side hub. And a torsion spring that elastically connects the flange in the circumferential direction. A plurality of notches (square windows) are formed in the flange of the output hub, and cut-raised portions that are cut and raised in the axial direction are formed in the portion corresponding to the square windows on the input plate. The torsion spring is arranged in the notch and the cut and raised portion. Further, the cut-and-raised part restricts the radial outward and axial movement of the torsion spring.

[0003]

In the conventional clutch disc assembly, when the input plate and the output hub rotate relative to each other, the torsion spring repeatedly expands and contracts in the circumferential direction. At this time, since the centrifugal force generated by the rotation of the clutch disc assembly acts on the torsion spring, the torsion spring mainly slides while being pressed against the outer peripheral portion of the cut-and-raised portion of the input side plate. As a result, wear on the cut-and-raised part of the input side plate progresses,
The life is shortened.

Such a problem similarly occurs in a damper disc assembly having no clutch disc. An object of the present invention is to reduce wear of a plate cut-and-raised part on which an elastic member slides. Another object of the present invention is to improve the life of the input side plate.

[0005]

A damper disk assembly according to a first aspect of the present invention comprises a first rotary plate, a second rotary plate and an elastic member. The first rotating plate is
It has a first support portion that is formed by cutting and raising, has a plurality of micropores, and is surface-hardened by carburization. The second rotating plate is arranged so as to be rotatable relative to the first rotating plate and has a second supporting portion corresponding to the first supporting portion. The elastic member is supported by the first support portion and the second support portion, and connects the first rotating plate and the second rotating plate in the circumferential direction.

In this case, since the support portion of the first rotary plate is surface-hardened by carburization, it is possible to reduce wear of the portion where the elastic member slides. Further, since a plurality of minute holes are formed in the supporting portion and the portion subjected to the surface hardening treatment by carburizing is deep, even if the portion of the supporting portion on which the elastic member slides is worn, the thickness direction is reduced. Since the carburized layer is continuously formed, the life of the plate is extended.

A damper disk assembly according to a second aspect of the present invention comprises a first rotary plate, a second rotary plate, an elastic member and a lubricant. The first rotating plate has a first supporting portion formed by cutting and raising. The second rotary plate is arranged to be rotatable relative to the first rotary plate,
It has the 2nd support part formed in the position which counters the 1st support part. The elastic member is supported by the first support portion and the second support portion and connects the first rotating plate and the second rotating plate in the circumferential direction. The lubricant is provided on the surface of the first support portion that contacts the elastic member.

In this case, the elastic member is pressed against and slides on the support portion of each rotary plate, but the lubricant is disposed on the contact surface of the support portion of the first rotary plate with the elastic member. It is possible to reduce wear of the support portion of the first rotating plate. Further, since the lubricant also adheres to the second rotating plate via the elastic member, it is possible to reduce wear of the supporting portion of the second rotating plate.

A damper disk assembly according to a third aspect of the present invention is the damper disk assembly according to the second aspect, wherein the first support portion has a plurality of recesses formed on a surface that abuts against the elastic member. The lubricant is filled in the concave portion of the support portion. A damper disk assembly according to a fourth aspect is the damper disk assembly according to the third aspect, wherein the lubricant is disposed on the entire contact surface of the support portion including the recess.

A damper disk assembly according to a fifth aspect of the present invention is the damper disk assembly according to any one of the second to fourth aspects, wherein the lubricant is selected from solbest, graphite and molybdenum disulfide. At least 1
It consists of two substances. A damper disc assembly according to a sixth aspect is the damper disc assembly according to any of the first to fifth aspects, in which the elastic member is a torsion spring.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A clutch disc assembly 1 according to an embodiment of the present invention shown in FIG. 1 has torque from an engine (not shown) arranged on the left side of FIG. 1 arranged on the right side of FIG. It is a device for transmitting and shutting off to a transmission (not shown). In FIG. 1, O-O is the rotation axis of the clutch disc assembly 1.

At the center of the clutch disc assembly 1, a spline hub 2 connected to a transmission shaft (not shown) is arranged. Spline hub 2
Has a spline hole 2a at its center. Also,
A flange portion 2b is formed on the outer periphery of the spline hub 2 so as to extend radially outward. The flange portion 2b has a plurality of window holes 2d extending in the circumferential direction at the middle portion in the radial direction. Further, a plurality of notches 2c are formed on the outer peripheral edge of the flange portion 2b at equal intervals in the circumferential direction.

A clutch plate 5 as an input side plate and a retaining plate 6 are arranged on both sides of the flange portion 2b of the spline hub 2. The plates 5 and 6 are substantially disk-shaped members, and the spline hub 2
Is rotatably engaged with the outer periphery of the. Clutch plate 5
And the retaining plate 6 have a flange portion 2 respectively.
The cut-and-raised parts 5a and 6a are formed by cutting and raising axially outward at positions corresponding to the window holes 2d of b. The torsion spring 8 is supported in the cut-and-raised portions 5a and 6a and the window hole 2d of the flange portion 2b.

The retaining plate 6 is surface-hardened by carburization, and the surface is covered with a carburized layer 30, as shown in FIG. Also, the cut-and-raised part 6 of the plate
A large number of minute holes 40 are formed in a so as to penetrate the cut-and-raised portion 6a. Therefore, the wall surface 40 a of the minute hole 40 is also surface-hardened by carburization and covered with the carburized layer 30. Like the retaining plate 6, the clutch plate 5 is also covered with the carburized layer 30 whose surface is hardened by carburization, and the cut-and-raised portion 5a has
A plurality of micro holes 40 are formed.

In this case, the cut and raised portion 5 of the plates 5 and 6
Since a and 6a are covered with the carburized layer 30, the cut and raised portion 5
It is possible to reduce wear of the portions (a and 6a) where the torsion spring 8 slides (the left side of the cut-and-raised portion 6a in FIG. 2). Furthermore, the cut-and-raised parts 5a, 6 of the plates 5, 6
In a, since the large number of micropores 40 are formed, the surface-hardened portion is deep. Therefore, when the torsion spring 8 slides,
Even if the cut and raised portions 5a and 6a are worn, the carburized layer 30 is continuously formed in the thickness direction of the cut and raised portions, so that the life of the plate is extended.

The plates 5 and 6 are fixed by rivets at their outer peripheral portions. A plurality of cushioning plates 22 are connected to the outer peripheral edge of the clutch plate 5 by rivets 21. Annular friction facings 23 are fixed to both sides of the cushioning plate 22. An engine side flywheel (not shown) is arranged on the left side of the friction facing 23 in FIG.
Friction facing 23 and cushioning plate 22
When is pressed by the flywheel, torque on the engine side is input to the clutch disc assembly 1.

In such a clutch disc assembly 1, during rotation, the torsion spring 8 is moved radially outward by the centrifugal force due to the rotation, and the outer peripheral portion of the window hole 2d of the flange portion 2b and the plates 5, 6 are disengaged. Raised parts 5a, 6a
Slides on the inner surface of. At this time, the inner peripheral surfaces of the cut-and-raised parts 5a and 6a are subjected to a surface hardening treatment by carburization and the carburized layer is deep, so that deterioration due to friction with the torsion spring 8 is reduced and the life of the plate is extended. [Other Embodiments] (1) In the retaining plate 6 shown in FIG. 3, a plurality of recesses 6b are formed on the surface of the cut-and-raised part 6a that abuts the torsion spring 8, and the recess 6b is formed of a solid such as sol vest. The lubricant 11 is filled. The clutch plate 5 has the same structure.

In this case, the torsion spring 8 slides on the retaining plate 6 and the clutch plate 5 as well as on the solid lubricant 11. for that reason,
The solid lubricant 11 is transferred to the surface of the torsion spring 8, and further transferred from the torsion spring 8 to the outer edge of the window hole 2d and the inner surfaces of the cut-and-raised parts 5a and 6a on the outer peripheral side,
It is abundantly supplied to the window hole 2d and the cut and raised portions 5a and 6a.
As a result, the torsion spring 8 and the cut-and-raised part 5
The lubricity is improved between a and 6a, and the wear of the plate is reduced. (2) In the retaining plate 6 shown in FIG. 4, a plurality of concave portions 6c are locally formed on the contact surface of the cut and raised portion 6a with the torsion spring 8, and the solid lubricant 11 is embedded in the concave portions 6c. ing. Also, the cut-and-raised part 6
The solid lubricant 11 is applied to the entire contact surface of a.
The clutch plate 5 has the same structure.

In this case, when the torsion spring 8 slides on the retaining plate 6 and the clutch plate 5, even after the solid lubricant 11 applied to the inner peripheral surfaces of the cut and raised portions 5a and 6a is worn. The lubricant is supplied from the recess 6c. As a result, good lubricity is maintained between the torsion spring 8 and the cut-and-raised parts 5a, 6a,
The life of the plates 5 and 6 is extended. [Modification] (a) In the embodiment shown in FIG. 2, the micro holes 40 penetrate the cut-and-raised portion 5a of the retaining plate.
It does not have to penetrate.

(B) In the embodiment shown in FIG. 4, the solid lubricant is embedded in the recess, but a lubricant-impregnated member in which the lubricant is impregnated may be embedded in the void of the sintered metal. Other solid lubricants such as graphite and molybdenum disulfide may be used as the lubricant (c). These solid lubricants may be mixed with oil or grease.

[0021]

In the damper disk assembly according to the present invention, since the support portion of the first rotating plate is surface-hardened by carburization, wear of the portion where the elastic member slides can be reduced. Furthermore, since each plate has a plurality of minute holes, the carburized layer is deepened and the life of the rotary plate is extended.

In another damper disk assembly according to the present invention, since the lubricant is provided on the surface of the first rotating plate that contacts the elastic member, the abrasion of the plate due to the sliding of the elastic member can be reduced. .

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional view of a damper disk assembly as an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a retaining plate according to an embodiment of the present invention.

FIG. 3 is an enlarged sectional view of a retaining plate according to another embodiment of the present invention.

FIG. 4 is an enlarged sectional view of a retaining plate according to another embodiment of the present invention.

[Explanation of symbols]

 1 Clutch Disc Assembly 2 Spline Hub 2b Flange 2d Window Hole 5 Clutch Plate 6 Retaining Plates 5a, 6a Cut and Raised 8 Torsion Spring 11 Lubricant 30 Carburized Layer 40 Micro Hole

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroyuki Matsubara 1-1-1, Kidamotomiya, Neyagawa City, Osaka Prefecture EXEDY Corporation

Claims (6)

[Claims] 1. A first rotary plate having a first support portion formed by cutting and raising and having a plurality of micropores formed and surface-hardened by carburization; and a first rotary plate arranged so as to be rotatable relative to the first rotary plate. A second rotating plate having a second supporting portion corresponding to the first supporting portion, and the first rotating portion supported by the first supporting portion and the second supporting portion.
A damper disk assembly comprising: a rotating plate and an elastic member that connects the second rotating plate in a circumferential direction. 2. A first rotating plate having a first supporting portion formed by cutting and raising, and a first rotating plate which is arranged so as to be rotatable relative to the first rotating plate and which is formed at a position facing the first supporting portion. A second rotary plate having two support parts, and the first support part supported by the first support part and the second support part
A damper disk assembly comprising: an elastic member that circumferentially connects the rotating plate and the second rotating plate; and a lubricant provided on a surface of the first support portion that abuts the elastic member. 3. The first support part has a plurality of recesses formed on a surface that abuts the elastic member, and the lubricant is filled in the recesses of the support part. The described damper disk assembly. 4. The damper disk assembly according to claim 3, wherein the lubricant is disposed on the entire contact surface of the support including the recess. 5. The damper disk assembly according to claim 2, wherein the lubricant comprises at least one substance selected from solbest, graphite and molybdenum disulfide. 6. The elastic member is a coil spring.
The damper disk assembly according to claim 1.