JPH0217737B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a friction material-embedded rotating disk for the purpose of alleviating shock in a multi-plate friction material rotating disk applied to brake motors, electromagnetic brakes, electromagnetic clutches, and the like.

In conventional multi-plate friction material rotating disks, as shown in FIG. These are fitted and connected to the output shaft 2 through a spline 2' or a square boss so that they can slide in the axial direction but are fixed in the rotational direction. Also, the fixing plate 3 has a fixing pin 4 parallel to the output shaft 2.
Although the pin is slidable in the axial direction, it is fixedly attached in the rotational direction. A large number of rotating plates 1 and fixed plates 3 are sequentially and alternately stacked on top of each other, and a braking force is exerted on the output shaft 2 by the frictional engagement between them. Note that 5 indicates a brake spring.

The above-mentioned disc 1 has a small inertia in order to perform electrical sudden stopping and braking, and a steel plate with a small specific gravity and not easily magnetized is used as the iron core 1-1. The peripheral portion is carburized and quenched, which tends to cause distortion, and a friction material 1-2 having a size larger than the outer diameter of the iron core 1-1 is fixed by simultaneous molding.

Disadvantages of such discs include (1) manufacturing difficulties such as positioning of the iron core due to the friction material containing the iron core, and (2) discs being discarded due to marginal wear of the friction material. (3) There is difficulty in fitting the disc and the spline of the output shaft, and (4) the braking rotational force is transferred to the spline 2'.
In addition, it is directly subjected to friction material abrasion powder, output bearing rattling, and electromagnetic sliding (micro-sliding).

The present invention has been made in order to improve the various drawbacks of such discs, and involves disposing a large number of fan-shaped holes in the disc via a radial rim, and applying a friction material to each of these fan-shaped holes. The intended purpose is achieved by fitting in and out of the fixed plate and pasting a thin friction material on the part of the fixed plate that does not rub against the rotating disk.

The present invention will be explained below with reference to embodiments shown in FIGS. 2 and 3.

As shown in FIG. 2, the fitting portion between the disc 1 and the output shaft 2 is based on a spline 2' or a square boss, as in the case of FIG. It is separate from the. That is, radial rims 7 are attached to the disc 1 (the number of rims is not limited), fan-shaped holes are cut between the rims, and fan-shaped friction materials 6 are fitted into each hole so that they can freely go in and out. It's crowded.

In addition, as shown in FIG. 3, a thin friction material 8 is pasted on both sides or one side of the fixed plate 3 of the mating partner at a place other than the surface that rubs against the disk 1, so that the friction material 8 contacts the rotating shaft 2 while the disk 1 is rotating. Even if it slides relative to the fixing plate 6, metal contact with the fixing plate 3 will not occur and noise will not be generated.

As described above, according to the present invention, (1) the disc has a small inertia, reducing starting and braking loads, (2) only the friction material can be replaced and the disc can be used semi-permanently, (3) The output shaft also has better durability, (4) manufacturing of the friction material is simple and the manufacturing process is reduced, (5) the disc has good ventilation and heat dissipation, and (6) yen. Effects such as easy contact between the plate and fixed plate, good removal of abrasion powder, and stable effectiveness are obtained.

[Brief explanation of drawings]

Figures 1A and 2B are a plan view and a cross-sectional side view of a main part of a conventional multi-plate friction material, and Figures 2A and 2B are a plan view and a cross-section of a main part of a multi-plate friction material showing an embodiment of the present invention. The side view and FIGS. 3A and 3B are a plan view and a side view of the fixing plate same as above. 1... Rotating disk, 2... Output shaft, 3... Fixed plate, 4... Fixed pin, 6... Fit-in friction material, 7
...Rim, 8...Thin friction plate.

Claims (1)

[Claims] 1 A number of rotating discs with friction materials are fixed to the output shaft in the rotational direction and slidable in the axial direction, and fixed to a fixed pin parallel to the output shaft in the rotational direction, and the length of the pin is fixed to the output shaft in the rotational direction. It is equipped with a large number of fixed plates that are slidably attached in the horizontal direction, and these rotating disks and fixed plates are stacked alternately, and frictional engagement due to pressure between these rotating disks and the fixed plates causes in which a braking force is applied to the output shaft,
A large number of fan-shaped holes are arranged in the rotating disk through a radial rim, and friction materials are fit into each of these fan-shaped holes so that they can be moved in and out, and a thin friction material is placed on the stationary plate at a place where it does not rub against the rotating disk. A multi-plate friction material-inserted rotary disk characterized by laminating materials.