JPH03260425A - Clutch driven plate - Google Patents

Abstract

PURPOSE:To get a light clutch driven plate without any warp in combination with a clutch facing member excellent in abrasion coefficient properties by stacking backup materials, where a core material consisting of thermoplastic resin is put between metallic surface plates and those are bonded together, on a clutch facing member, and molding them into one body. CONSTITUTION:Backup members 2, where a core material 5 consisting of thermoplastic resin is put between metallic surface plates 4 and 6 and those are bonded together, are stacked on a clutch facing member 3 consisting of a fiber base material, a coupling agent, and an abrasion adjusting material. Next, this is molded by heating and pressurization into one body, thus a desired clutch driven plate can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a clutch driven plate mainly used in a clutch disc of a dry clutch.

(Prior art) Conventionally, automobile clutch driven plates have been manufactured using long fibers such as asbestos or glass fiber as a base material, and the base material contains thermosetting resin, rubber material, and other friction improvers. The woven clutch driven plate is formed by winding it into an annular shape, preforming it, then pressurizing it in a mold, and then finishing it by removing burrs, removing burrs, and polishing.

On the other hand, JP-A-61-41022 and JP-A-61-41022,
As shown in Publication No. 70225, a clutch is made by laminating a backup material made of light alloy, etc. on a resin molded clutch facing plate made of a thermosetting resin as a binder on a non-woven fabric of sea urchin and asbestos, and then molded under heat and pressure. Driven plates are also known. This clutch driven plate.

Compared to a woven clutch driven model, it is generally more stable and has poor wear performance, with the temperature characteristics of the wear coefficient being much flat.

(Problem to be Solved by the Invention) However, the clutch driven plate manufactured by the above manufacturing method has the problem that the clutch driven plate warps due to the difference in thermal expansion coefficient between the backup material and the clutch facing member. .

In order to solve this problem, increasing the thickness of the metal backup material and increasing the rigidity of the backup material increases the weight of the clutch driven plate.

In order to use this for clutch discs, it was necessary to increase the strength of the transmission synchronizer.

(Means for Solving the Problems) The present invention was made to solve the above-mentioned problems, and consists of metal surface plates that are bonded to each other by sandwiching a core material made of thermosetting resin or the like between them. Backup material and fiber base material,
It is laminated onto a clutch facing member made of a binder, a friction adjusting material, etc., and is integrally molded by heat and pressure molding.

To explain in detail, 1. The surface plate of the backup material of the present invention includes a,
m. It is a ring-shaped metal plate made of brass, aluminum, duralumin, etc. It is preferable to use aluminum or duralumin, which has a light specific gravity. The core material is made of thermosetting resin such as epoxy resin or phenol resin. By using these resins and base materials such as paper or glass cloth, the thickness can be adjusted by increasing or decreasing the number of base materials. It is preferable because the coefficient of thermal expansion can be adjusted by changing the material sacrifice and amount.

In addition, as shown in Figure 3, if a dent is made in the surface plate at the location of the rivet hole for attaching the clutch driven plate to the clutch disk to prevent the rivet head from protruding from the surface plate, the wear of the clutch facing member 3 can be increased. It is preferable.

In addition, the surface that becomes the bonding surface between the backup material and the crack or front facing member should be made rougher than shot blasting or puff polishing because phenolic resin or nitrile phenol adhesive is applied. It is desirable that the surface of the backup material be degreased when applying the adhesive to the backup material.

In addition, the clutch facing member used in the present invention is made of facing materials conventionally used for resin molded clutch facings, and is generally made of a fiber base material such as asbestos, glass fiber, aramid fiber, acrylic fiber, or fabric and melamine resin. , thermosetting resins such as phenolic resins, and friction improvers such as cashew dust, friction dust, calcium carbonate, barium sulfate, copper, brass, and zinc.

And when integrally molding the laminated backup material and clutch facing member.

As is generally practiced, the molding temperature is 120°C to 2°C.
Heat and pressure molding is carried out at 00°C with a surface pressure of 50-/- to 200 kg/-, followed by heat treatment at 150°C to 300°C.
Add at ℃.

(Function) The clutch driven plate of the present invention uses a sandwich structure back-up material with a metal plate as a surface plate and a thermosetting resin as a core material, so it is lighter and more rigid than a metal back-up material. It is possible to obtain high-quality backup material. Therefore, there is no possibility of warping due to the difference in thermal expansion coefficient between the backup material and the clutch facing member.

(Example) Hereinafter, embodiments of the present invention will be described based on openings.

FIG. 1 shows a perspective view of a clutch driven plate according to the present invention. The clutch driven plate 1 of the embodiment has a circular ring shape. Aluminum alloy surface plates 4 and 6 as shown in Figure 2
A back-up material 2 having a sandwich structure in which a core material 5 impregnated with a phenolic resin is sandwiched between Htζ paper and a clutch facing member 3 made of heat-resistant short fibers, a thermosetting resin, and an am improver are laminated and then heated and pressed. It is integrally molded by. This clutch driven plate 1 is used by riveting backup material 2 to both sides of a cushion spring of a dry clutch (not shown) with backup material 2 facing the disk side.

Next, the M of this clutch driven plate! The manufacturing method Iζ will be explained using FIGS. 1, 2, and 4.

First, the backup material 2 is molded. The core material is 0, 2
This is n+m paper dipped in phenol varnish and pre-dried. First, an aluminum alloy plate of 0.5 ff 1 m in diameter, which will serve as the core material and the surface plate, was punched out into a circular ring shape using a punching press. Next, the surface of the aluminum alloy plate was degreased with acetone and roughened with hydrochloric acid. Next, aluminum alloy plate, core material,
The core material and the aluminum alloy plate were layered in this order and heated and pressed at 250° C. for 30 minutes to form backup material 2.

Subsequently, an adhesive made of phenolic resin is applied to the surface of the mold, and the mold is placed in the groove of the mold 9 shown in FIG. 4 with the coated surface facing upward.

Next, the facing member 3 is formed. That is, after blending bulk Kevlar 29 (aramid fiber, DuFont brand name), which is a heat-resistant short fiber, phenol resin, cashew dust, which is a friction improver, and magnesium carbonate, the acing member 3 is preformed. The preformed facing member 3 is placed in the groove of the mold 9 shown in FIG.

As a result, the facing member 3 is placed on the upper surface of the backup material 2. In this condition.

The mold 8 is clamped at a temperature of 150°C and a surface pressure of 200k.
Heat and pressure mold under conditions of g/-. After that, the clutch driven plate 1 was heated at 200°C for 4 hours f! ! , to harden and mature. Furthermore, in order to produce a clutch driven plate l having a predetermined thickness, the facing member 3 is polished, and holes are machined (repaired) to form a final integral bottom clutch driven plate lζ as shown in FIG.

The clutch driven plate formed in this manner was a light clutch driven plate with little warpage.

(Effects of the Invention) As explained above, the clutch driven plate of the present invention
A backup material made of i-made surface plates is sandwiched between a core material made of thermosetting resin and bonded to each other, and is laminated to the clutch facing member and integrally molded, resulting in a clutch with excellent friction coefficient characteristics. A lightweight clutch driven plate without warping can be obtained by combining with the 7-singing member.

4. Explanation of inward moving vehicle Figure 1 is a perspective view of the clutch driven plate, Figures 2 and 3 are partial sectional views of the backup material, and Figure 4 is a portion of the mold for the clutch driven plate according to the present invention. A cross-sectional view is shown.

description of 2...Backup material 4... Surface plate sign 1...Clutch driven plate 3...Clutch facing component 5...Heartwood 7...Rivet hole 9...Molding mold 6... Surface plate 8...Molding mold Figure 1 Figure 2

Claims (1)

[Scope of Claims] 1. A clutch facing made of a back-up material bonded to each other by sandwiching a core material made of thermosetting resin between metal surface plates, a fiber base material, a binder, a friction modifier, etc. A clutch driven plate characterized in that it is integrally formed by laminating a member and heating and pressurizing it. 2. The clutch driven plate according to claim 1, wherein the core material is made of thermosetting resin and paper. 3. The clutch driven plate according to claim 1, wherein a thermosetting resin and a woven fabric are used as the core material. 4. The clutch driven plate according to claim 1, wherein one side of the metal surface plate is provided with a recess so that the head of a rivet for attaching the clutch driven plate to the clutch disk does not come out from the surface plate.