JP4132248B2 - Display switch - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a display switch in which a transparent button is disposed on the upper surface of a display device that can be electrically changed, and the mass production is improved and the weight is reduced, thereby obtaining a wide display surface. It is related with the support structure of the button aiming at that.
[0002]
[Prior art]
Conventionally, in a display switch that is used by placing transparent buttons on a frame in a matrix so that it can move up and down and placing it on the upper surface of a CRT or LCD display device, the strength of the partition plate that supports the buttons is increased. due to the disposed around the button switch switching mechanism by ensuring, buttons surrounding frame is widely ensured, as shown in FIG. 11.
[0003]
[Problems to be solved by the invention]
As shown in FIG. 11 , in the conventional display switch composed of an integrated partition plate, a wide frame is secured, so that characters and pictures displayed on the display are within the display range of each button alone. It was limited, and it was impossible to perform large continuous display vertically and horizontally.
In addition, since metal is used to ensure the practical strength of the partition plate, the weight is large, and warping that occurs during processing is generated, so that it is necessary to correct in a later step.
This invention solves the said subject and implement | achieves the improvement and mass reduction of the mass production of the switch for a display in which reliable operation feeling is obtained with a moderate stroke.
[0004]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a partition plate in the frame to divide the plane of the frame into a plurality of rows, and a plurality of buttons formed of transparent members can be moved up and down between the partition plates. In a display switch comprising a switch mechanism portion that is continuously arranged and pressed by the vertical movement of the button, a flange portion protrudes from a side surface of the button, and a leg portion having a convex portion is opposed to the flange portion. It is made of metal and has elasticity that supports at least three sides of a cross section of the support portion, and a support portion made of a resin forming portion, and a partition plate, and a return spring is accommodated by installing a spring housing portion next to the support plate . It is constituted by a mounting member made of a thin plate and having a substantially U-shaped cross section, and an undercut portion is provided in the support portion, and the convex portion of the button leg portion is hooked on the undercut portion.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
The present invention provides a partition plate structure for supporting a button of a display switch having a substantially U-shaped cross section comprising a support portion of a resin forming portion and a thin metal plate having elasticity supporting at least three sides of the cross section of the support portion. Since it is composed of the mounting bracket, it is difficult for components to be warped or distorted by compounding, and the weight of the switch can be reduced. In addition, since it is possible to make the partition plate thin, there is an effect that the partition plate does not feel uncomfortable even for large display, and a clear display can be performed, and in addition, by making it dustproof and waterproof, This can contribute to the spread of display switches.
[0006]
【Example】
Hereinafter, the present embodiment will be described with reference to the drawings.
1 is a sectional view of a display switch according to the present invention, FIGS. 2 and 3 are sectional views of essential parts of the display switch according to the present invention, FIG. 4 is an exploded perspective view of the display switch according to the present invention, and FIG. FIG. 6 is an external perspective view showing a combined state of the support portion and the mounting bracket, FIG. 7 is a bottom view of the button of the display switch of the present invention, and FIG. 8 and 9 are exploded perspective views of the main part of the display switch of the present invention.
[0007]
In FIG. 4, 3 is a frame, and a plurality of pairs of notches A3a and notches B3b are formed facing the upper surface. Further, a plurality of pairs of notches C3c and notches D3d are formed between the notches, and the light receiving element 8 and the light emitting element 6 are arranged to face each other. The notch F3f is formed, and the light emitting element 6 and the light receiving element 8 are disposed. Also, the frame 3 has a corner for avoiding a control part (not shown) such as a hole 3g for screw mounting to a base 7 described later and a key control IC chip mounted on a printed circuit board 2 described later. A plurality of holes 3h are formed.
[0008]
In FIG. 5, the support part 5 is formed in a T-shaped part 5f at both ends and is integrally formed with fiber reinforced resin or the like, and a small block body constituting a notch 5c serving as an optical path and buttons 4 described later on both sides. Thin beam portions 5d are alternately connected to a small block body having a pair of undercut portions 5a for hooking and convex portions 5b facing in the longitudinal direction. Further, the mounting bracket 11 is made of a thin metal plate having elasticity, and the cross section is bent in a substantially U shape so that the square window 11c facing the notch 5c of the support portion 5 and the convex portion 5b of the support portion 5 are unevenly hung. It has a square window 11b that stops.
[0009]
FIG. 6 is a view in which the partition plate 14 is configured by combining the support portion 5 and the mounting bracket 11. Thus, since the partition plate 14 is composed of the support portion 5 formed of the resin forming portion and the mounting bracket 11 having a substantially U-shaped cross section that supports at least three sides of the cross section of the support portion 5, warping and distortion of each component can be prevented. It is possible to form a partition plate 14 that is corrected mutually and without bending. Further, since the strength of the combined partition plate 14 is improved, the partition plate 14 itself can be made thin, and the partition plate 14 does not feel uncomfortable even for a large display, and an effect that a clear display can be performed is produced. Furthermore, the weight of the switch can be reduced and the parts can be easily processed, so that the mass productivity can be improved and the cost can be reduced.
[0010]
The partition plate 14 engages the support portion 5 and the mounting bracket 11 below the frame body 3 or sandwiching the frame body 3 so that both ends T of the support portion 5 are attached to the notches A3a and B3b of the frame body 3. The shape portion 5f is engaged with the concave and convex portions to divide the frame body into a plurality of rows. The support unit 5 is prevented from coming off by fixing a printed board 2 described later to the frame 3.
[0011]
1, 2, and 4, reference numeral 2 denotes a printed circuit board, which is provided with a large square window 2 a that is substantially equivalent to the frame 3. And the terminals of the plurality of light receiving elements 8 are soldered to the two sides forming a right angle of the square window 2a, and the plurality of light emitting elements 6 are similarly soldered to the two sides forming the other right angle, The light receiving element 8 and the light emitting element 6 face each other to form a matrix-like optical path.
[0012]
And after fixing the printed circuit board 2 to the upper surface of the frame 3, it is assembled | attached to the base 7 which comprises a switch housing | casing, The square window 7a is opened widely in this base 7, The LCD unit 12 is below the base 7. Is attached with the LCD display surface 12a facing the square window 7a. A transparent plate 9 is disposed between the frame 3 and the LCD unit 12. Further, the light receiving element 8 and the light emitting element 6 disposed on the printed board 2 are accommodated in the notches 3c to 3f of the frame 3, and the optical axis is corrected.
[0013]
7 and 8, reference numeral 4 denotes a button formed of a transparent member. On the four side surfaces of the button 4, there are provided light-shielding portions 4e and 4f that block light paths by providing fine uneven portions to diffuse light. The light-shielding portions 4e and 4f can be formed by two-color molding or painting of a black colored portion, and various measures such as fitting of different parts can be considered.
[0014]
The button is provided with a leg portion 4a having a flange portion 4g projecting on the side surface and a convex portion 4b that is parallel to the longitudinal direction of the flange portion 4g and faces the same side, and further, a spring accommodating portion 4c. Is placed adjacent to the leg portion 4a to house the return coil spring 10, and the undercut portion 5a provided on the support portion 5 and the convex portion 4b of the button 4 are hooked so as to be movable up and down. In addition, the convex part 11a provided in the mounting bracket 11 is for improving the sitting of the coil spring 10, and the method of assembling the button 4 and the coil spring 10 is merely an example.
FIG. 9 shows a state in which the button 4 is assembled to a plurality of partition plates in this way.
[0015]
Then, the decorative board 1 having the square window 1a is fitted and fixed to the base 7 in a state where all the buttons 4 are aligned in the square window 1a, thereby completing the display switch of the present invention ( FIG. 10 ) . ).
Reference numeral 13 denotes an interface cable which is led out from the printed circuit board 2 through the base 7.
In the embodiment of the present invention, the partition plate 14 is divided at equal intervals, but by dividing according to the application, a button having a multiple of the basic size can be provided.
[0016]
The display switch configured as described above can see through the LCD display surface 12a through the transparent button 4, but since there is nothing to shield other than an extremely thin partition plate above the LCD display surface 12a, it is dead. A display switch with a small space and a large effective display area can be configured.
Further, since the partition plates 14 and 50 do not appear between the adjacent buttons 4 ( FIG. 10 ), the design is neat and the effect of widening the display area of the display can be produced.
As for the switch function, when the button 4 is pressed, the lower surface of the button 4 blocks the optical path, and a pressed position of the button 4 is detected by a position detection circuit (not shown) separately provided on the back surface of the printed circuit board 2. be able to. When the pressing of the button 4 is released, the coil spring 10 acts so that the button 4 returns to the original state. However, since the coil spring 10 is housed in each of the four locations of one button 4, there are four points. It can have stable operability due to support. Furthermore, since the partition plate 14 is configured by the support portion 5 made of the resin forming portion and the mounting bracket 11 having a substantially U-shaped cross section, the guide of the vertical movement of the button 4 is performed on the rolling surface of the metal plate. Friction is reduced and a smooth and soft operation feeling can be obtained.
[0017]
The waterproof sheet in FIG. 10 is a transparent and flexible film such as a polyurethane sheet, and has an adhesive layer (not shown) for being attached to the decorative board 1 around. In an environment where a large amount of dust is generated, it is possible to prevent dust from entering by simply sticking to the decorative board 1 in advance, and by providing a packing between the base 7 and the decorative board 1, etc., it is waterproof. it can.
[0018]
【The invention's effect】
As described above in detail, according to the present invention, the following effects can be obtained.
(1) Since the partition plate is composed of a support portion composed of a resin forming portion and a mounting bracket having a substantially U-shaped cross section that supports at least three sides of the cross section of the support portion, the warp and distortion of the component are corrected and bent. A partition plate without a gap can be formed.
(2) Since the partition plate is composed of the support portion formed of the resin forming portion and the mounting bracket having a substantially U-shaped cross section that supports at least three sides of the cross section of the support portion, the processing of the parts becomes extremely easy and inexpensive. A price display switch can be provided.
(3) Since the partition plate is composed of the support portion formed of the resin forming portion and the mounting bracket having a substantially U-shaped cross section that supports at least three sides of the cross section of the support portion, the partition plate can be thinned. In addition to reducing the weight of the switch, it is possible to produce an effect that the partition plate does not feel uncomfortable even for a large display and a clear display can be performed.
(4) Since the partition plate is composed of a support portion formed of a resin forming portion and a mounting bracket having a substantially U-shaped cross section, the vertical movement of the button is guided on the rolling surface of the metal plate, reducing friction. Therefore, a smooth and soft operation feeling can be obtained.
(5) Since a decorative plate is disposed above the button and a transparent flexible film is disposed on the decorative plate, it is possible to provide a display switch having an environment in which a large amount of dust is generated and waterproof performance. It has become possible.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a display switch of the present invention.
FIG. 2 is a cross-sectional view of a main part of the display switch of the present invention.
FIG. 3 is a cross-sectional view of a main part of the display switch of the present invention.
FIG. 4 is an exploded perspective view of the display switch of the present invention.
FIG. 5 is an external perspective view of a support portion and a mounting bracket of a display switch according to the present invention.
FIG. 6 is an external perspective view showing a combined state of the support portion and the mounting bracket of the display switch of the present invention.
FIG. 7 is a bottom view of buttons of the display switch of the present invention.
FIG. 8 is an exploded perspective view of a main part of the display switch of the present invention.
FIG. 9 is an exploded perspective view of a main part of the display switch of the present invention.
FIG. 10 is a completed external view of the display switch of the present invention.
FIG. 11 is a front view of a conventional display switch.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Decorative plate 1a, 2a Square window 2 Printed circuit board 3 Frame 3a, 3b, 3c, 3d, 3e, 3f, 5c Notch 3g Hole 3h Square hole 4 Button 4a Leg part 5a Undercut part 4c Spring storage part 4e, 4f Light-shielding part 4g Gutter part 4b, 4d, 5b, 11a Convex part 5 Support part 5d Beam part 5f T-shaped part 6 Light emitting element 7 Base 7a, 11b, 11c Square window 8 Light receiving element 9 Transparent plate 10 Coil spring 11 Mounting bracket 12 LCD unit 12a LCD display surface 13 Cable 14 Partition plate

Claims (1)

A partition plate is provided in the frame to divide the plane of the frame into a plurality of rows, and a plurality of buttons formed of a transparent member are continuously disposed between the partition plates so as to be movable up and down. In a switch for a display comprising a switch mechanism that is pressed by movement, a flange protruding from the side of the button and a leg having a protrusion on the flange are vertically opposed to each other, and a spring storage is provided next to the flange. A mounting bracket having a substantially U-shaped cross-section comprising a support portion made of a resin forming portion and an elastic metal thin plate supporting at least three sides of the cross-section of the support portion. A display switch comprising: an undercut portion provided in the support portion; and a convex portion of the button leg portion hooked on the undercut portion.

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