JP3003950B2 - Rotating disk plate for encoder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary disk plate for an encoder, and more particularly to a novel improvement for easily improving the strength of a rotary thin plate made of a thin metal plate used for vibration resistance and the like.

[0002]

2. Description of the Related Art Conventionally, there are various types of disk plates for an encoder of this kind which have been used. Generally, for example, as disclosed in Japanese Patent Laid-Open No. 1-173625,
A pattern is printed on a glass disk and used as a transmissive type or a reflective type. When used for low pulse or high vibration, high impact, obtained by metal etching, FIG. 3 and FIG. The rotating thin plate 1 made of the metal thin plate shown is employed. In addition, the thickness of the rotating thin plate 1 is becoming thinner and thinner due to a demand for a higher pulse, and the reinforcing plate 2 is inevitably required. The reinforcing plate 2 is attached to the rotating thin plate 1 via an adhesive 3.

[0003]

The conventional disk plate for an encoder has the following problems because it has been configured as described above. That is, when the reinforcing plate is bonded to the rotating thin plate with an adhesive and adhered, the surface of the rotating thin plate is finished to a state close to a mirror surface. Adhesive strength is weak,
It was difficult to stick each other. In addition, the thickness of the rotating thin plate is very thin, which makes it difficult to apply the adhesive, causing application unevenness, and the infiltration of air, resulting in uneven surface of the rotating thin plate.

The present invention has been made to solve the above problems, and particularly relates to a novel improvement for easily improving the strength of a rotating thin plate made of a thin metal plate used for vibration resistance or the like. .

[0005]

According to the present invention, there is provided an encoder disk plate comprising: a rotary thin plate made of a metal thin plate; a reinforcing plate attached to at least one surface of the rotary thin plate via an adhesive; And a formed through-hole.

[0006]

In the encoder disk plate according to the present invention, when the rotating thin plate and the reinforcing plate are adhered to each other with an adhesive, a through hole is formed in the reinforcing plate. As a result, the rotating thin plate and the reinforcing plate are firmly joined. In addition, since air existing between the rotating thin plate and the reinforcing plate escapes and escapes through the through hole formed in the reinforcing plate, air (bubbles) is not inserted, and the surface of the rotating thin plate is also finished flat. be able to.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of an encoder disk plate according to the present invention will be described below in detail with reference to the drawings.
Note that the same or equivalent parts as those in the conventional example are denoted by the same reference numerals and described. FIG. 1 and FIG. 2 are a perspective view and a sectional view of a surface portion showing an encoder disk plate according to the present invention. In the drawing, reference numeral 1 denotes a rotating thin plate made of a metal thin plate formed by an etching process,
A ring-shaped reinforcing plate 2 having a plurality of through holes 4 and formed thicker than the rotary thin plate 1 is adhered to at least one surface 1 a of the rotary thin plate 1 via an adhesive 3. Since the adhesive 3 is bonded so as to cover the inner wall 4a and the edge 4b of the through hole 4, the plates 1 and 2 are firmly bonded. A rotating shaft 5 is connected to the rotating thin plate 1,
The rotating thin plate 1 is configured to rotate together with the rotating shaft 5.

[0008]

Since the encoder disk plate according to the present invention is constructed as described above, the following effects can be obtained. That is, since the adhesive is bonded to the through-hole of the reinforcing plate, the reinforcing plate and the rotating thin plate can be firmly bonded, and the reliability can be improved. Further, since air is released through the through holes, no air bubbles are generated between the reinforcing plate and the rotating thin plate, and the surface of the rotating thin plate can be finished flat. Furthermore, after the rotating thin plate and the reinforcing plate are combined, the adhesive can be replenished through the through-hole, and the adhesive effect can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an encoder disk plate according to the present invention.

FIG. 2 is a sectional view showing a main part of FIG.

FIG. 3 is a perspective view showing a conventional encoder disk plate.

FIG. 4 is a sectional view showing a main part of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rotating thin plate 1a One surface 2 Reinforcement plate 3 Adhesive 4 Through hole

Claims (3)

(57) [Claims] 1. A rotary thin plate (1) made of a metal thin plate, a reinforcing plate (2) attached to at least one surface (1a) of the rotary thin plate (1) via an adhesive (3), and the reinforcing plate A rotary disk plate for an encoder, comprising: a through hole (4) formed in a plate (2); wherein the through hole (4) and an adhesive (3) are combined. 2. The rotary disk plate for an encoder according to claim 1, wherein said rotary thin plate has a ring shape. 3. The rotary disk plate for an encoder according to claim 1, wherein said through hole (4) comprises a plurality of holes.