JPH0353244Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a structure for adhering a display sheet to, for example, an operating section of a keyboard switch.

[Conventional technology and its problems]

Conventionally, as shown in FIG. 8, a flexible display sheet 21 is pasted on the front surface of the switch body 20, and a part of the display sheet 21 is pressed according to the display printed on the display sheet 21. A keyboard switch is known in which the display sheet 21 is bent to operate a switch device 22 built into the switch body 20.

Conventionally, when attaching the display sheet 21 to the switch body 20, the following procedure has been taken. First, as shown in FIG. 9, a bonding material 23 such as double-sided adhesive tape is pasted on the display sheet pasting side of the switch body 20,
Next, as shown in FIG. 10, one end of the display sheet 21 is temporarily attached to one end of the switch body 20. Next, as shown in FIG. 11, the display sheet 2 is attached while ensuring that the other end of the display sheet 21 is not joined to the switch main body 20.
Press the adhesive roller 24 on one end of the switch body 20 and the display sheet 21, and gradually press the adhesive roller 24 on one end of the switch body 20 and the display sheet 21 while operating the display sheet 21 and the adhesive roller 24 so that air is not caught between the switch body 20 and the display sheet 21. Paste all the way to the edge.

Such pasting means does not pose any particular problem when the display sheet 21 is small. However, when the display sheet 21 becomes large, its overall rigidity decreases, making it difficult to handle, which not only takes a lot of time for pasting, but also causes wrinkles in the display sheet 21 and damage to the pasting surface. If air is drawn in, problems will occur.

Furthermore, in conventional keyboard switches of this kind, due to the demand for miniaturization, the adhesive margin for pasting the display sheet 21 is often only 2 to 3 mm on the outer periphery of the switch body 20; There is a problem that the display sheet 21 is easily peeled off from the switch body 20.

In order to solve this problem, as shown in FIG. 12, the outer periphery 21a of the display sheet 21 is folded back to the side surface of the switch body 20, and glued on the side surface of the switch body 20 with a sufficient adhesive margin. It is preferable to do so. However, as shown in FIG. 13, the display sheet 21 is first pasted on the display portion of the switch body 20 using the same pasting means as described above, and then the outer peripheral edge of the display sheet 21 is
1a is folded back to the side surface of the switch body 20 and the outer periphery of the display sheet 21 is attached to the side surface of the switch body 20. The display sheet 21 is generally made of a synthetic resin material with excellent elasticity such as polyester. Therefore, a problem arises in that the folded portion peels off within a relatively short period of time due to the spring back of the display sheet 21 itself after being pasted.

As shown in FIG. 14, if the display sheet 21
If the outer peripheral edge 21a of the switch body is bent in advance at an angle equal to or smaller than the angle of the side surface of the switch body, the problem of peeling of the folded portion due to spring back can be solved. However, in this way, the outer peripheral edge 21a of the display sheet 21
If the display sheet 21 is bent in advance, the rigidity of the bent portion increases, making it impossible to bend the display sheet 21 freely along the shape of the sticking roller 24, and making it impossible to press the sticking roller 24. Therefore, problems such as wrinkles and air entrainment occur in the display sheet 21 occur.

[Means for solving problems]

The present invention solves the problems of the prior art described above and provides a display sheet adhesion structure that is easy to work with and has an excellent appearance. A backing plate with a small size is attached in advance to the adherend, and the remaining end of the display sheet that protrudes outward from the backing plate is bent to match the angle of the display sheet attachment part of the adherend. It is characterized by being attached to.

[Effect]

In the display sheet adhesion structure of the present invention configured as described above, first, the flat display sheet is adhered to the flat backing plate, so at this stage,
By applying the same pasting means as in the past, the display sheet can be neatly pasted onto the backing plate. Furthermore, after attaching the backing plate and before attaching it to the switch body, the remaining end of the display sheet protruding outward from the backing plate was bent to match the angle of the display sheet attachment part of the switch body. The remaining end of the display sheet will not peel off due to the springback of the display sheet itself.

[Embodiment] Hereinafter, an embodiment of the present invention will be described based on FIGS. 1 to 6.

FIG. 1 is a sectional view of the switch body to which a display sheet is attached, in which 1 is the display sheet, 2 is a backing plate attached to the back side of the display sheet 1, and 3 is the display sheet 1 attached to it. The main body of the switch is shown.

As shown in FIG. 2, the display sheet 1 has predetermined characters, figures, A printed layer 5 on which symbols, background colors, etc. are printed is provided, and a protective film 6 made of a flexible film similar to the surface film is laminated on the printed surface side of the surface film 4.

The backing plate 2 is formed of a hard flat plate with a slightly smaller area than the display sheet 1, and as shown in FIG. A through hole 7 is provided for this purpose. The backing plate 2 is attached to the switch main body 3 which is equipped with a back illumination means that illuminates characters, figures, symbols, etc. 5 printed on the display sheet 1 using the illumination means built into the switch main body 3. When applied, for example, a transparent synthetic resin plate such as an acrylic plate, a vinyl chloride plate, or a polycarbonate plate is used, and when applied to the switch body 3 that does not have such a backlighting means, an aluminum plate, an iron plate, etc. An opaque plate is used.

As shown in FIG. 4, a crosspiece 8 is formed on the front surface of the switch main body 3 for attaching the display sheet 1 to a necessary position inside the switch body 3. Various devices (not shown) such as a switch device and a lighting device are installed in the formed area.
is built-in.

The display sheet 1 is attached to the front surface of the switch body 3 by the following procedure.

First, a bonding material such as double-sided adhesive tape is attached to one side of the backing plate 2, and as shown in FIG. The 6 side is pasted while being pressed by the pasting roller 24. Next, as shown in FIG. 6, a shallow cut 10 is formed parallel to the outer peripheral edge of the backing plate 2 on the protective film 6 side of the remaining end 1a of the display sheet 1.
Bend the outer side toward the backing plate attachment side. In this case, the bending angle of the remaining end portion 1a of the display sheet 1 is formed to be equal to or slightly smaller than the angle formed between the front surface and the side surface of the switch body 3.

Next, bonding means such as double-sided adhesive tape is attached to the front surface of the crosspiece 8 and the outer peripheral edge 9 of the switch body 3, and the backing plate 2, which has been affixed to the back side of the display sheet 1 as described above, is attached to the front surface of the crosspiece 8 and the outer peripheral edge 9. wear.

Finally, a bonding material such as double-sided adhesive tape is attached to the side surface of the switch main body 3, and the adhesive roller 24 is pressed against the surface of the display sheet 1 to prevent air from entering while bonding. The remaining end portion 1a of the display sheet 1 is attached to the means.

In the display sheet pasting structure of the above embodiment, the backing plate 2 is pasted on the back side of the display sheet 1, so that the rigidity of the display sheet 1 is improved and the display sheet 1 can be easily handled. In addition, the display sheet 1 and the backing plate 2 are attached, the backing plate 2 and the switch body 3 are attached, and the remaining end 1a of the switch body 1 and the display sheet 1 is attached.
Since an adhesion roller can be used for adhesion, the display sheet 1 can be adhered neatly to the switch body 3 without drawing in air or causing wrinkles. Furthermore, since the remaining end portion 1a of the display sheet 1 is attached to the side surface of the switch body 3, the attachment strength is improved and the durability can be improved.

In the above embodiment, the case where the remaining end 1a of the display sheet 1 was attached to the side surface of the switch body 3 was explained, but the gist of the present invention is that the backing plate is attached in advance. The present invention is based on the fact that the display sheet with the remaining end bent is attached to the switch body, but the attachment position of the remaining end of the display sheet is not limited to the above-mentioned position. do not have. For example, as shown in FIG. 7, the remaining end 1a of the display sheet 1 is folded back to the back side of the backing plate 2, and the display sheet 1 and the backing plate 2 are integrally formed, and then the display sheet 1 and the backing plate 2 are placed in front of the switch body 3. It is also possible to fit a stepped portion 11 formed with a.

According to the second embodiment, in addition to producing the same effects as in the first embodiment, since the remaining end portion 1a of the display sheet 1 is folded back to the back side of the backing plate 2, the aesthetic appearance can be further improved. .

In addition, in the above embodiment, only the case where the display sheet adhesion structure according to the present invention is applied to the operation part of a keyboard switch was explained, but the gist of the present invention is not limited to this, and other Of course, it is applicable to any purpose.

[Effect of idea]

As explained above, according to the present invention, the rigidity of the display sheet is improved and the adhesive roller can be pressed against all the adhesive parts, so there is no air entrainment or wrinkles, and it is possible to The display sheet can also be neatly attached to the switch body. In addition, since the remaining edge of the display sheet is bent in advance to match the angle of the display sheet attachment part of the switch body, the remaining edge of the display sheet will not peel off due to the springback of the display sheet itself. ,
Excellent durability. Furthermore, as a result of the increased adhesion area between the display sheet and the switch body, the display sheet becomes difficult to peel off, and from this point of view as well, durability can be improved.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing the display sheet pasting structure of the keyboard switch according to the present invention, Fig. 2 is a sectional view of the display sheet, Fig. 3 is a perspective view of the backing plate, and Fig. 4 is the front side of the switch body. 5 is a side view showing the means for attaching the display sheet and the backing plate, FIG. 6 is a cross-sectional view showing details of the notches formed in the display sheet, and FIG. 7 is the structure of the present invention. A cross-sectional view showing another embodiment, FIG. 8 is a cross-sectional view showing a display sheet pasting structure of a conventionally known keyboard switch,
Figures 9 to 11 are side views showing the conventional display sheet pasting procedure, Figure 12 is a sectional view showing a conventionally proposed display sheet pasting means, and Figure 13 is a conventionally proposed display sheet. A cross-sectional view showing the pasting procedure of
FIG. 14 is a sectional view of a conventionally proposed display sheet. 1: Display sheet, 2: Backing plate, 3: Switch body, 4: Surface film, 5: Printing layer, 6: Protective film, 7: Through hole, 8: Crosspiece, 9: Outer periphery, 10:
Surface plate, 11: Depth of cut.

Claims (1)

[Scope of utility model registration request] A backing plate having slightly smaller external dimensions than the display sheet is pasted in advance on the back side of a flexible display sheet on which predetermined printing has been applied, and the display sheet protrudes outward from the backing plate. 1. A structure for adhering a display sheet, characterized in that the remaining end of the display sheet is bent to match the angle of the display sheet adhering portion of the adherend, and the remaining end is pasted to the adherend.