JPH04133336U - Tatsuchi switch light shielding plate mounting structure - Google Patents

Abstract

(57) [Summary] [Purpose] To enable maintenance of touch switches by allowing the light shielding plate to be removed from the holder without damaging the parts even if trouble occurs with the light emitting element or light receiving element. shall be. [Structure] A holder 1 for mounting a light emitting element 4 and a light receiving element 5 is provided on a printed circuit board 2, and a light shielding plate 6 is placed over the holder 1 to connect pins 8, 9 and protrusions 12 provided on the holder 1 with the light shielding plate 6. The holes 10 and 11 provided in the plate 6 and the square hole 13 are removably fitted, and the light shielding plate 6 is attached to the holder 1.
The position was fixed against the

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a holder for mounting light receiving and emitting elements in optical sensor type touch switches. This relates to the structure of the light-shielding plate attachment part.

0002

[Conventional technology]

In conventional touch switches of this type, attaching the light shielding plate to the holder is This was done by gluing.

0003

[Problem that the idea aims to solve]

However, if the light-shielding plate is glued to the holder, it may cause trouble to the light-emitting element and the light-receiving element. If this occurs, the light shielding plate cannot be removed and maintenance may be impossible. There was a problem.

0004 This invention solves these problems and eliminates troubles with light emitting elements and light receiving elements. Even if this occurs, the light shielding plate can be removed from the holder without damaging the parts. The purpose is to enable maintenance.

[0005]

[Means to solve the problem]

In order to solve this problem, the present invention has a light-emitting element and a light-receiving element on a printed circuit board. In addition to providing a holder for attaching the child, a light shielding plate is placed over the holder to attach the child. By removably engaging the protrusion provided on the light shielding plate with the hole provided on the light shielding plate, the light shielding plate is attached to the holder. It is positioned and fixed relative to the holder.

[0006]

[Effect]

With this configuration, the light-shielding plate can be attached by simply placing it over the holder, and the light-emitting element The light-shielding plate and the holder can be easily separated when the light receiving element needs to be replaced.

[0007]

【Example】

Hereinafter, one embodiment of the present invention will be described based on the drawings. In FIG. 1, 1 is a rectangular frame-shaped holder attached to a printed circuit board 2. Then, insert the light emitting element 4 and the light receiving element 5 into the guide hole 3 of this holder 1 so that they face each other. Insert the sea urchin. Reference numeral 6 denotes a light-shielding plate having an L-shaped planar shape and a U-shaped cross section. It is placed over the carder 1 to prevent the light emitting element 4 and light receiving element 5 from protruding. Ru. Each light shielding plate 6 has a light shielding portion 7 and a pin 8 protruding from the upper surface of the holder 1. , 9, and a square hole 13 that engages with the protrusion 12 on the outer surface of the holder 1. It is growing. In order to give elasticity to the forming part of this square hole 13, slits are inserted on both sides of the square hole 13. 14 is formed. By the way, the pin 8 is for positioning the light shielding plate 6, and the pin 9 is for positioning the light shielding plate 6. is used to stop the rotation, and the hole 11 that fits into the pin 9 is an elongated hole.

[0008] Therefore, the holes 10 and 11 of the light shielding plate 6 are fitted into the pins 8 and 9 of the holder 1, respectively. At the same time, by engaging the square hole 13 of the light shielding plate 6 with the protrusion 12 of the holder 1. , the light shielding plate 6 is attached to the holder 1. Remove the light shielding plate 6 from the holder 1 In this case, this can be easily done by removing the square hole 13 from the protrusion 12.

[0009]

[Effect of the idea]

As described above, according to the present invention, the light shielding plate is placed on the printed circuit board in the same direction as the electronic components. It can be implemented from Easy and maintainable.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of a light shielding plate attachment part in an embodiment of the present invention.

[Explanation of symbols]

1 holder 2 Printed circuit board 3 Guide hole 4 Light emitting element 5 Light receiving element 6 Light shielding plate 8 pin 9 pins 10 holes 11 holes 12 protrusions 13 square hole

Claims (1)

[Scope of utility model registration request] 1. A holder for mounting a light emitting element and a light receiving element is provided on a printed circuit board, a light shielding plate is placed over the holder, and a protrusion provided on the holder and a hole provided in the light shielding plate are removably engaged. The light shielding plate mounting part structure of a touch switch in which the light shielding plate is positioned and fixed to the holder.