JPH03225716A - Key switch mounting device - Google Patents

Abstract

PURPOSE:To improve the appearance by fitting the supporting plate of a key switch into an installation member having a guide slit whose length and breadth are somewhat larger than the length and breadth of the supporting plate to insert it into a hole of the switch cover. CONSTITUTION:A guide slit 15 is made in the case 11 of an installation member 10. The groove width of the slit 15 is approximately equal to the thickness of a supporting plate 2 and the lengths in the lengthwise and the breadthwise directions of the slit 15 are made somewhat longer than those of the plate 2. When the plate 2 is fitted into the member 10 and a covering 12, therefore, the plate 2 can be moved up and down and right and left along the slit 15 so that the operating portion 1a of a key switch 1 can be relatively positioned referring to a hole 7 of a switch cover 6. Resultantly, there is neither gap between the key switch and the hole nor deviation of the key switch, so that the appearance can be improved. It is also possible to simply earth the conductive projection 3 of the switch 1 by means of a conductive spring 8.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a key switch mounting device that is assembled into electronic equipment such as a personal computer.

[Conventional technology]

The key switch is used to input the power switch of the electronic device by inserting the key 1-, and by storing the key, it is possible to prevent someone else from accidentally driving the electronic device. For this reason, they are installed in personal computers and the like to protect programs and data from destruction.

FIG. 3 shows a conventional key switch mounting device for such electronic equipment. The key switch 30 includes an operating section 30a into which a key is inserted, and a conductive support plate 31.
The threaded portion 30b is provided with a threaded portion 30b that is penetrated through the
A nut 32 is screwed into b to fix the key switch 30.

The key switch 3 makes the support plate 31 conductive.
This is to prevent static electricity. At this time, key switch 3
Since the threaded portion 30b of 0 is made of synthetic resin or the like, it is necessary to ground the operating portion 30a. Therefore, the operating portion 30a and the support plate 31 are connected by a ground wire 39.

A connector 33 is connected to the key switch 30 attached to the support plate 31 by a lead wire 38, and this connector 33 is connected to a connector 35 attached to a circuit board 34. Further, the operating portion 30a of the key switch 3o is inserted from the back side into the sieve hole 37 formed in the switch cover 36, thereby improving the appearance and fixing the operating portion 30a of the key switch 30. Note that the circuit board 34 is connected to this switch cover 36.
is attached to the back of the

[Problem to be solved by the invention]

However, in the conventional structure, the operation part 3 of the key switch 3o
It is necessary to make the sieve hole 37 of the switch cover 36 larger than 0a. This is because the support plate 31 on which the key switch 30 is supported and the switch cover 36 into which the operating section 30a of the key switch 30 is inserted are fixed separately. Due to the need to take into account. Therefore, due to the difference in dimensions between the sieve hole 37 and the operating section 30a, a gap is created between the sieve hole 37 and the operating section 30a inserted therein, which is not desirable in terms of appearance. There wasn't. In addition, in order to ensure that the key switch 30 is grounded, a ground wire 39 is connected to the operation part 30a of the key switch 30.
and the support plate 31 had to be connected, making the connection work complicated.

The present invention has been made in consideration of the above circumstances, and an object of the present invention is to provide a key switch mounting device that can easily ensure grounding and that does not create a gap between the sieve hole of the switch cover and the operating section of the key switch. is its purpose.

[Means to solve the problem]

To achieve the above object, the present invention includes a switch cover having a sieve hole into which a key switch is inserted, a support plate to which the key switch is attached, and at least a part of which is a conductive part. A support plate is fitted between a mounting member that restrains movement of the key switch in the front-rear direction and allows movement in the vertical and horizontal directions, and a support plate that is stretched between the key switch and the conductive part of the mounting part. It is characterized by comprising a conductive leaf spring.

[Effect]

The mounting member supports the support plate so as to be movable in the vertical and horizontal directions, and by this movement, the key switch can be positioned with respect to the sieve hole of the switch cover.

Further, the conductive leaf spring is extremely easy to install and acts to release static electricity discharged through the key switch to the mounting member.

〔Example〕

FIGS. 1(a) and 1(b) show an embodiment of the present invention.

The key switch 1 is supported by the support plate 2 in a penetrating state so that the operating portion 1a thereof is located at the front. Projections 3 made of a conductive material are formed above and below the front side of the penetrating portion of the key switch 1, and the key switch 1 is grounded using the projections 3. Further, a circuit board 4 is connected to the penetrating end of the key switch 1 via a lead wire 5. Such a key switch 1 has a support plate 2 attached to a mounting member 10, and
The operating portion 1a is assembled so as to be inserted into the sieve hole 7 of the switch cover 6.

The mounting member 10 is divided into two parts: a case 11 and a lid 12 constituting a conductive part, and these have hooks 13 and slits 1 provided at the top and bottom of each.
4 are fitted together to support the support plate 2. A guide slit 15 is formed on the front side of the interior of the case 11 by a pair of opposing protrusions.

The guide slit 15 is into which the support plate 2 is inserted, and the width of the groove is equal to the thickness of the support plate 2 and the gap. As a result, when the support plate 2 is inserted into the guide slit 15, the support plate 2 is restrained from moving in the front-rear direction. Therefore, rattling when inserting the key into the key switch 1 is eliminated.

Further, the length of the guide slit 15 in the vertical and horizontal directions is somewhat larger than the height and width dimensions of the support plate 2. This difference in dimensions allows the support plate 2 to move vertically and horizontally along the guide slit 15.

By this vertical and horizontal movement, the operating portion 1a of the key switch 1 is aligned relative to the sieve hole 7 of the switch cover 6. In this case, the guide slit 15
The support plate 2 can be attached within a range where the support plate 2 will not come off.

Since the key switch 1 can be aligned with the switch cover 6 in this way, the switch cover 6
The sieve hole 7 can be formed to have the same dimension as the operating part 1a of the key switch 1. For this reason, the sieve hole 7 and the operation part 1a
Since there is no gap between the screen and the operating section 1a and no deviation of the operating section 1a within the sieve hole 7, the appearance is improved.

Reference numeral 16 denotes a board slit formed horizontally on the rear side of the case 11, into which the circuit board 4 is inserted and fixed. For such a case 11, the lid body 12
The fitting prevents the support plate 2 from coming off and stopping.

In this embodiment, the lid 12 is made of a conductive material or plated, and has hook protrusions 17 formed at two upper and lower positions on its front surface. Reference numeral 8 designates a leaf spring whose both ends are hooked to the hook protrusion 17 in a curved state. This leaf spring 8 is formed of a conductive material into a horizontal U-shape, and its curved portion is in contact with the protrusion 3° 3 of the key switch 1, and its tip is folded back 8a.

The above-mentioned latching is performed at 8a. This causes the leaf spring 8
is spanned between the key switch 1 and the lid 12, so that the key switch 1 and the lid 12 are electrically connected, the key switch 1 is grounded, and static electricity can be prevented. In this case, the plate spring 8 is of a size and elasticity that does not hinder the freedom of vertical and horizontal movement of the support plate 2.

Furthermore, before the key switch 1 is inserted into the sieve hole 7 of the switch cover, the guide slit 1 is
5, but by attaching this leaf spring 8, it can be flexibly held at the designed position. Therefore, the switch 1 can be inserted into the sieve hole 7 even more easily.

FIGS. 2(a) and 2(b) show another embodiment of the present invention, in which, in addition to the key switch 1 as described above, a push button switch 20
is attached to the case to form a switch unit 21. The push button switch 20 serves as a normal power switch, and electronic equipment is started by operating the push button.

In the figure, 22 is the front panel of the electronic device to which this switch unit 21 is attached, and the key switch 1
A sieve hole 23 corresponding to the push button switch 20 is formed, and an operation hole 24 corresponding to the push button switch 20 is formed. Furthermore, guide protrusions 25.25 are formed in an upright manner on both sides of the operation hole 24, and the push button switch 20 is inserted into the operation hole 24 and guided by the guide protrusions 25.25. ing.

In such a configuration, the switch unit 21 is accurately positioned by the six guide protrusions 25, and each switch 1, 2
0 is inserted into the corresponding hole 23.24. Therefore, installation can be easily performed.

Moreover, since a pair of guide protrusions 25 are provided on the left and right,
It also prevents the switch unit 21 from rotating.

This anti-rotation action eliminates rattling when the key switch 1 is operated.

〔Effect of the invention〕

As explained above, in the present invention, the key switch is positioned with respect to the switch cover by attaching the support plate to the mounting member so as to be movable in the vertical and horizontal directions. The key switch can be made to have approximately the same dimensions as the key switch, and there is no gap between the key switch and the hole, and there is no uneven distribution of the key switch, and the appearance can be improved. Moreover, since the grounding is performed using a leaf spring, it is possible to obtain a good grounding condition with extremely simple work.

[Brief explanation of drawings]

FIGS. 1(a) and (b) are respectively a perspective view and an exploded view showing one embodiment of the present invention, and FIGS. 2(a) and (b) are an exploded perspective view and a partial perspective view thereof showing another embodiment. 3 are exploded perspective views showing a conventional device. 1...Key switch, 2...Support plate, 6...
・Key cover 7...mark hole, 8...plate spring, 10・
...Mounting member, 11...Case, 12...Lid (conductive part).

Claims (1)

[Claims] A switch cover having a decorative hole into which a key switch is inserted, a support plate to which the key switch is attached, at least a part of which is a conductive portion, and a key switch with respect to the switch cover. a mounting member into which the support plate is fitted so as to restrict movement in the front-rear direction and allow movement in the vertical and horizontal directions; and a conductive member that spans between the key switch and the conductive portion of the mounting portion. A key switch mounting device comprising: a leaf spring;