JP2654411B2 - Attaching a cover sheet for slide-operated electrical components - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of attaching a cover sheet provided at a position covering a long hole of a slide operation type electric component for dust prevention or blindfolding.

[0002]

2. Description of the Related Art A slide operation type variable resistor is shown in FIGS.
As shown in the plan view and the side view of FIG.
The set resistance value can be changed by reciprocating the operation element 3 along the elongated hole 2. That is, although not shown, inside the main body case 1,
Since the slider integrated with the operation element 3 is elastically contacted with the resistor on the insulating substrate 4, when the operation element 3 is reciprocated, the slider slides on the resistance element. The resistance value is changing. If the long hole 2 is exposed to the outside, dirt and dust adhere to the slider and the resistor to cause a conduction failure, and the inside of the main body case 1 becomes visible so that the design is impaired. Therefore, a flexible cover sheet 5 made of a rubber sheet or an opaque film is adhered to the top surface of the main body case 1 at a position covering the long hole 2, and a slit 6 previously formed on the cover sheet 5 is provided. It is opposed to the long hole 2. The cover sheet 5 is conventionally attached to the main body case 1 as follows. First, Figure 6,
As shown in the cross-sectional view and plan view of FIG. 7, a belt-like body 9 formed by attaching a cover sheet 5 to a base sheet 7, also called a separator, whose surface is rich in releasability via a double-sided adhesive tape 8.
Prepare Here, the base sheet 7 is a known base sheet in which a release agent is applied to a backing sheet to enhance the releasability of the surface.
Is held. Then, the cover sheet 5 together with the double-sided adhesive tape 8 is peeled off from the belt-shaped body 9, and both ends thereof are pinched with fingers, and a predetermined position for covering the elongated hole 2 while aligning with reference to the contour of the top surface of the body case 1. A cover sheet 5 is attached to the cover.

[0003]

However, in the above-mentioned conventional attaching method, since the attaching operation must be performed with both ends of the cover sheet 5 covered with fingers, the position of the cover sheet 5 with respect to the main body case 1 is required. There was a problem that it was difficult to match. Also, cover sheet 5
Is directly pinched and peeled from the base sheet 7, a careful peeling operation is required so as not to break the cover sheet 5, and even after peeling, the small cover sheet 5 is pinched and requires considerable attention. Eventually, the handling was poor. Accordingly, it is an object of the present invention to provide a cover sheet attaching method for a slide operation type electric component, in which handleability of the cover sheet is good and alignment is easy.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a base sheet (separator) whose surface is rich in releasability, comprising a cover sheet and a transparent film covering the cover sheet. After peeling the transparent film together with the cover sheet from the base sheet, attaching the transparent film to the main body case while aligning the cover sheet, and then peeling the transparent film from the main body case. Is achieved by:

[0005]

[Function] If the transparent film is peeled off from the base sheet together with the cover sheet, the tear of the cover sheet, which is a concern at the time of peeling, can be avoided, and even after peeling, the relatively large transparent film can be pinched with a finger and work can be performed. Therefore, the handleability is improved. Further, since the outline of the cover sheet can be visually observed through the transparent film, the positioning at the time of sticking can be easily performed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In this embodiment, as shown in the sectional view and plan view of FIGS.
Is used as the belt-shaped body 10 holding the cover sheet 5 and a transparent film 11 covering the cover sheet 5 on a base sheet (separator) 7 whose surface is rich in releasability. Here, a cover sheet 5 made of polyethylene terephthalate or the like and provided with a slit 6 is adhered via a double-sided adhesive tape 8, and a transparent film 11 made of polyvinyl chloride or the like is adhered by an adhesive layer 12. However, the adhesive strength of the double-sided adhesive tape 8 is stronger than that of the adhesive layer 12. Now, when such a band 10 is prepared, first, the transparent film 11 is peeled off from the base sheet 7 together with the cover sheet 5. At this time, due to the releasability of the surface of the base sheet 7, if the transparent film 11 with the adhesive layer 12 is pinched with a finger and peeled off the base sheet 7, the cover sheet 5 is also peeled from the base sheet 7 together with the double-sided adhesive tape 8. I will do it. Next, while pinching both ends of the peeled transparent film 11 with fingers, FIG.
As shown in the plan view, while comparing the outline of the top surface of the main body case 1 and the outline of the cover sheet 5, the cover sheet 5 is positioned so as to come to a predetermined position covering the slot 2,
The transparent film 11 is stuck on the top surface of the main body case 1. Thereafter, when the transparent film 11 is peeled off from the main body case 1, the adhesive force of the double-sided adhesive tape 8 is stronger than that of the adhesive layer 12 as described above. The film 11 is peeled off.

As described above, in the above embodiment, the transparent film 11 and the cover sheet 5 are used together with the base sheet 7.
Since there is no fear of the cover sheet 5 being broken at the time of peeling, the work can be performed while pinching the relatively large transparent film 11 with a finger even after peeling, so that the handleability is extremely good. Also, the transparent film 11
The outline of the cover sheet 5 can be visually observed through the cover, and the cover sheet 5 is not covered with a finger at the time of sticking as in the related art. I can do it. In the above embodiment, one of the protruding portions at the four corners of the cover sheet 5 (indicated by A in the drawing) is shortened, but this is achieved by visually observing the cover sheet 5 attached to the top surface. The orientation of the case 1 is intended to be grasped instantaneously, and workability can be improved in the subsequent assembling process. However, cover sheet 5
Needless to say, the present invention can be applied to the case where the material and the shape of the transparent film 11 are different from those of the above-described embodiment.

[0008]

As described above, in the cover sheet attaching method according to the present invention, the transparent film covering the cover sheet is peeled from the base sheet and pinched with a finger, and the transparent film is attached to the main body while visually observing the contour of the cover sheet. After sticking to the case, only the transparent film is peeled off from the main body case, so the work can be performed without touching the cover sheet and the handling is good, and the cover sheet can be easily aligned with the main body case. This greatly contributes to the improvement of productivity and cost reduction of the slide operation type electric component.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a band according to an embodiment of the present invention.

FIG. 2 is a plan view of the strip shown in FIG. 1;

FIG. 3 is a plan view showing a step of attaching a cover sheet in this embodiment.

FIG. 4 is a plan view of the slide operation type variable resistor.

FIG. 5 is a side view of the variable resistor shown in FIG.

FIG. 6 is a cross-sectional view of a strip according to a conventional example.

FIG. 7 is a plan view of the strip shown in FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 2 Slot 3 Operator 5 Cover sheet 6 Slit 7 Base sheet 10 Strip 11 Transparent film

Claims (1)

(57) [Claims] 1. A slit is provided on a surface of a main body case at a position covering an elongated hole for protruding an operation element, a flexible cover sheet is attached, and the slit is opposed to the elongated hole. In the manufacturing process of the slide operation type electric component that makes the operation element reciprocable along the long hole, the cover sheet and the transparent film covering the cover sheet were adhered to a base sheet having a surface with excellent releasability. After the transparent film was peeled off together with the cover sheet from the base sheet, the transparent film was attached to the main body case while aligning the cover sheet, and then the transparent film was removed. A cover sheet attaching method for a slide operation type electric component, wherein the cover sheet is detached from the main body case.