JPH01176615A - Double-sided input switch - Google Patents

Abstract

PURPOSE:To obtain a low cost double-sided input switch by providing cases at both sides of a membrane switch and carrying out switching directly or through an operating body through the holes of the cases. CONSTITUTION:A front surface contact 25 and a rear surface contact 29 are provided on the front side FPC 26 and the rear side FPC 30 respectively maintaining the opposite positions through a spacer 33, and a membrane switch is composed. On both sides of the membrane switch, a front side facing panel 27 and a rear side facing panel 31 are positioned, and they are held between a front side case 28 and a rear side case 32 which are made of a rigid or a half-rigid substance, to compose a both-sides input switch. In this case, however, there is no rigid body to hold the membrane switch, and the size of holes 32 must be designed adequately. In such a composition, since the same switch can be used to switch from both sides, the front and the rear sides, the numbers of parts and processes to compose the switch can be reduced and a low cost double-sided input switch can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a double-sided Kasui Sochi used in TVs, VTRs, audio equipment, telephones, and the like.

Conventional technology FIG. 4 shows the configuration of a conventional double-sided input switch.

In Figure 4, 4.6 is the lower contact point and the upper contact point, respectively, and are referred to as the lower flexible pattern circuit (hereinafter referred to as FPC)
7 and the upper FPCs, and are held so as to face each other by a spacer e. The switch 1 is constructed by arranging a decorative panel 9 thereon.

This single-sided switch 1 is provided on both sides of a rigid or semi-rigid substrate 3, and the case 10 shown in the table is provided. By holding it in the back case 11, it constitutes a double-sided input switch that can be operated from both sides. Next, the operation of the above conventional example will be explained. When the switch is operated in the state shown in FIG. 6B, the key operation of switch 1 in the table of FIG. 4 becomes possible, and the upper liquid point 5 and the lower contact point 4 are short-circuited by pressing the finger, and switching is performed. When the switch is operated in the state shown in FIG. 6, the key operation of the switch 2 on the back side of FIG. 4 becomes possible in the same way.

In this way, even with the conventional configuration described above, the switch can be operated from both sides.

Problems to be Solved by the Invention However, in the conventional double-sided input switch described above, the front and back switches 1 and 2 share the board 3 but are independent, so the front switch 1 and the back switch 2 are required separately. The materials and man-hours are approximately twice that of a single-sided switch.
It was very expensive.

The present invention solves these conventional problems,
The purpose is to provide inexpensive double-sided Kasui/Sochi.

Means for Solving the Problems In order to achieve the above object, the present invention provides a case on both sides of one membrane switch, and directly connects the membrane switch through the hole.
Alternatively, the configuration is such that switching can be performed from both sides of the membrane switch and the switch via the operating body.

Therefore, according to the present invention, since the same switch can be switched from both the front side and the back side, the number of parts and man-hours configuring the switch can be reduced, and it is possible to provide a double-sided input switch that is cheaper than the conventional one. Become.

Embodiment FIG. 1 shows the configuration of an embodiment of the present invention. In Figure 1, 25.29 is the front side contact and the back side contact,
They are disposed on the front surface FPCj26 and the rear surface ypcao, respectively, and are held by spacers 33 so as to face each other, thereby configuring a membrane switch. A double-sided input switch is constructed by arranging a front decorative panel 27 and a back decorative panel 31 on both sides of this membrane switch, and inserting them between a rigid or semi-rigid front case 28 and a rear case 32. The switch shown in the inside of the figure can be swiveled from either the front or the back. However, since there is no rigid body to hold the membrane switch, it is necessary to appropriately design the size of the hole 34. The switch shown at part B in the figure can only be switched from the surface, and the membrane switch is held by a case 32. The switch at section C in the figure can only be switched from the back side, and the membrane switch is held by a case 28.

As described above, according to the above embodiment, the same membrane switch can be used for switching from the front and back sides, and has the effect that the number of parts and man-hours can be reduced.

FIGS. 2 and 3 show main parts of other embodiments,
FIG. 2 shows a diaphragm 36, a diaphragm holding spacer 3e that holds the diaphragm 36, and a diaphragm 36 on the front side of the membrane switch shown in FIG.
diaphragm protection sheet 37 that covers the button suppressing part 3
8 and a case 28 for holding the operating body 39 are provided. An operating section 4o and a back decorative panel 31 integrally formed with the case 32 are provided on the back surface.

FIG. 3 shows the membrane switch shown in FIG.
and an integrated body of button rubbers 41 and 42.

The embodiments shown in FIGS. 2 and 3 have the effect of providing a sense of moderation during switching due to the diaphragm 36 and button rubbers 41 and 42, respectively.

Note that a sense of moderation can also be obtained by applying convex processing similar to the diaphragm 36 to the FPCs 26 and 30 on the front and back sides of the membrane/switch. Additionally, the membrane/switch may be provided with air holes to equalize the air pressure inside and outside.

Effects of the Invention As is clear from the above embodiments, the present invention has the following effects.

(1) The number of switch components can be reduced compared to conventional double-sided input switches.

(2) Assembly man-hours can be reduced by significantly reducing the number of component parts.

+5) Due to the effects of (1) and (2), an inexpensive double-sided input switch can be provided.

(4) The double-sided input switch can be made thinner and lighter.

[Brief Description of the Drawings] Fig. 1 is a sectional view of a double-sided input switch according to an embodiment of the present invention, Fig. 2 is a sectional view of another embodiment of the present invention, and Fig. 3 is a sectional view of a further embodiment of the present invention. FIG. 4 is a sectional view of the embodiment, FIG. 4 is a sectional view of a conventional example, and FIGS. 5 a and 5 b are perspective views showing an example of use of the conventional example. 25...Front side contact, 28...Case,
29...Backside contact, 32...Case,
33... Spacer, 34... Hole. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] A double-sided input switch having a structure in which a case is provided on both sides of one membrane switch, a hole is provided in the case, and switching of the membrane switch is performed directly through the hole or via an operating body.