JPS62232811A - Switching device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a switch device used in electronic equipment.

BACKGROUND OF THE INVENTION In recent years, as electronic devices have become smaller and thinner, it has become common for switches to have mounting feet integrally formed on the frame, fixed to a printed circuit board, and attached to a half lJ, for example. As shown in FIGS. 3 and 4, the IU IJJJ 2 is inserted into the frame 1, the movable contact piece 8 is attached to the lower part of the sliding body 2, and the fixed terminal 4 is attached to the terminal plate 3.
The switch was changed with the help of this. In the figure, 5 is a mounting leg of the frame 1, 6 is a printed circuit board to which a switch is to be attached, and 7 is a half-FFJ attachment portion between the mounting leg 5 of the frame 1 and the printed circuit board 1-board 6.

Problems to be Solved by the Invention However, in the above-mentioned conventional switch, since the distance from the half-mounted part 7 to the terminal plate 3 is short, the terminal plate 3 is deformed by the heat during soldering, causing the fixed terminal 4 to wobble. Furthermore, there was a problem in that the half flux adhered to the fixed terminals 4 of the terminal board 3, causing poor contact.

Means for Solving the Problems In order to solve the above conventional problems, the switch device of the present invention includes a case that is fitted into a through hole or notch formed between conductive patterns for connection of a printed circuit board, and a case that is fitted into a through hole or notch formed between conductive patterns for connection of a printed circuit board. a plurality of fixed terminals that protrude laterally from the inside of the case and can be press-contacted to the conductive pattern of the printed circuit board; an operating body for selectively bringing the movable contact piece into contact with and separating from the fixed terminals within the case; and an opening surface of the case. It has a cover that can be removably fixed to the case and has dimensions that protrude sideways from the case, so that when the cover is fixed to the opening of the case, the protruding part of the cover from the case and the fixed terminal are The structure was such that a printed circuit board was sandwiched between them.

Function According to the above configuration, simply by fitting the case into the through hole or notch of the printed circuit board and locking the cover to the opening surface of the case, the printed circuit board can be automatically inserted between the protruding part of the cover and the fixed terminal. is sandwiched, thereby achieving a conductive connection between the conductive pattern and the fixed terminal, and at the same time allowing the switch to be mounted and supported on the printed circuit board. Further, no soldering work is required at that time, and therefore, there is no possibility of thermal deformation of related parts or electrical connection failure due to solder flux fluidization.

Example Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings.

In FIGS. 1 and 2, reference numeral 11 is a printed circuit board having an appropriate conductive pattern 12 for connection on the back surface and a notch 13 in a part (in the illustrated example, the side part).

Reference numeral 14 denotes an insert-molded case that substantially corresponds to the notch 13 of the printed circuit board 11, and a plurality of (three in the illustrated example) fixed terminals 15 protrude laterally from the inner bottom of the case 14. A plurality of pairs (two pairs in the illustrated example) of elastic engagement hooks 16 are protruded from the upper opening side of the case 14, and the cover 17 is attached to a portion of the frontage of the case 14 using these engagement hooks 16. It is removably locked to the surface. For this purpose, the cover 17 is provided with corresponding pairs of positioning notches 18 on its opposite edges. Further, the cover 17 includes abutment protrusions 19 formed by recessing the wall thickness at the protruding portions 17a at both ends thereof, and has a guide slot 20 in the center portion. An active body 21 is movably housed in the case 14, and this Ii!
! An operation protrusion 22 extending upward from the moving body 21 is connected to the cover 17.
It is guided through the guide slot 20 of.

A fixing recess t is provided in the center of the lower surface of the moving body 21! When A23 is formed and J3 is formed, the central fixing protrusion 25 of the movable contact piece 24 is fitted and held in this fixing recess 23. Therefore, if the operating protrusion 22 is manually operated to move the sliding body 21, the movable contact piece 24 also moves, and can be selectively moved toward and away from a desired fixed terminal 15. Note that 26 is f in case 14.
! The inner protrusion 27 provided on the inner surface of the wall is an outer protrusion provided on the side surface of the body 21, and the inner protrusion 26 and the outer protrusion 27 act elastically when the sliding body 21 is moved. When in contact, it gives a sharpness when changing the switch or a feeling of knot VJ.

When attaching the switch device to the printed circuit board 11, first, the case 14 containing the movable contact piece 24 and the active body 21 is fitted into the notch 13 of the printed circuit board 11, and the fixed terminal 15 is brought into contact with the corresponding 4ffi pattern 12.

Next, the cover 17 is pressed against the case 14 from above so that the positioning notches 18 correspond to the engagement hooks 16, and the cover 17 is elastically passed between the engagement hooks 16. As a result, the engagement hook 16 is automatically engaged with the upper surface of the cover 11, and the printed circuit board 11 is pressed and held between the protrusion 81S17a of the cover 17 and the fixed terminal 15. At this time, since there is no need for soldering, there will be no inconvenience caused by thermal deformation of the related parts or fluidization of the solder flanks.

The invention is not limited to the embodiments shown.

For example, the cover 17 may be locked to the case 14 by providing downward engaging hooks only on the cover 17, and these engaging hooks may be elastically locked to the lower surface of the case 14 (in this case, (The dimensions of the notch 13 of the printed circuit board 11 are made slightly larger). Moreover, the cover 17 can also be fixed to the opening surface of the case 14 by screwing. Furthermore, instead of the notch 13 on the side of the printed circuit board 11, a through hole may be provided in the plane of the printed circuit board 11, and the case 14 may of course be fitted into this hole.

Effects of the Invention As is clear from the above embodiments, the present invention consists of a printed circuit board sandwiched between fixed terminals and a cover, and the fixed terminals pressure-bonded to the conductive pattern, making the installation process easy without the need for soldering. It has the advantage of being able to Furthermore, since half El attachment is not required, it is possible to prevent the intrusion of solder flux and thermal deformation due to IJ heat, and it is possible to easily incorporate the shape.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a switch device according to an embodiment of the present invention, Fig. 2 is an exploded perspective view of the switch device, Fig. 3 is a front view of a conventional switch device, and Fig. 4 is a side view of the switch device. It is a diagram. 11... Printed circuit board, 12... Conductive pattern, 1
3... Notch, 14... Case, 15... Fixed terminal, 17... Cover, 21... 1 Front moving body (operating body)
, 24...Movable tangent agent Moriki i
Hiro 1st figure 24 OK 1/l numbing 2nd figure 3rd figure

Claims (1)

[Claims] 1. A case that is fitted into a through hole or notch formed between conductive patterns for connection on a printed circuit board, and a plurality of fixed terminals that protrude laterally from the inside of this case and can be press-contacted to the conductive patterns on the printed circuit board; It includes an operating body for selectively moving the movable contact piece toward and away from the fixed terminal within the case, and a cover that can be detachably fixed to the opening surface of the case and has dimensions that protrude laterally from the case. A switch device configured such that when the cover is fixed to the opening surface of the case, a printed circuit board is held between a portion of the cover protruding from the case and a fixed terminal.