JPH0355806A - Mounting method of slider for electronic part - Google Patents

Abstract

PURPOSE:To obtain a mounting method, which has excellent productivity and in which there is no possibility of the separation of sliders and the deformation of a contact section, by inserting the slip-off preventive protruding section of a slider at the nose of a chain-shaped slider, in which a plurality of the sliders are connected in the longitudinal direction, into the recessed section of a slider holding body and cutting and separating the slider at the nose by a cutter. CONSTITUTION:When the sliders 1 of an electronic part, which is composed of a metal and at one end section of which a slip-off preventive protruding section 1d is formed, an installed to a slider holding body 2, which consists of a synthetic resin and on a slider mounting surface 2c of which a recessed section 2d is shaped, the slip-off preventive protruding section 1d of the slider 1-1 at the nose of a chain-shaped slider 1-2 in which a plurality of the sliders 1 are connected in the longitudinal direction is inserted into the recessed section 2d of the slider holding body 2, the slider 1-1 at the nose is cut and separated by a cutter 7, and the end section of the slider 1-1 is bent and a contact section 1c is formed. The nose of a jig 4 for a heating punch is pushed against a section near the recessed section 2d into which the slip-off preventive protruding section 1d is inserted, the recessed section 2d is buried, and the recessed section 2 is buried while a section near the root of the cut and separated slider 1 is bent.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a method for attaching a slider to a rotating or linear sliding type electronic component, such as a variable resistor, a changeover switch, etc.

"Prior Art" A conventional slider mounting method of this type will be explained using a rotary electronic component as an example. As shown in FIG. 5, the conventional slider 1 has a large number of thin metal wires 1a each having a diameter of, for example, 0.05M, which are arranged parallel to each other in a single layer, and a rod-shaped retaining protrusion 1b is provided at the top of one end of the metal wires 1a. It is welded perpendicularly to each thin metal wire 1a, and the other end of each thin metal wire is attached to a retaining protrusion 1b.
is bent at a predetermined angle to the side opposite to the welded side,
The corner portion is used as a contact portion IC. Further, the slider 1 is constructed by bending the intermediate portion of each thin metal wire at a predetermined position at an obtuse angle in the same direction as the other end portion.

The slider holder 2 to which the slider is attached is made of synthetic resin, and as shown in FIG. A recess 2d is formed on the slider mounting surface 2C of the portion 2b.

Attach the slider holder 2 to the fixing jig 3, sandwich the slider 1 with a set of bottles, and insert the retaining protrusion 1b into the recess 2d (Fig. 7A). Machining Ml Heating punch jig 4 is placed on the end surface near the recess 2d.
Press the tip of the and fill in the recess 2d (Figure 7B)
．． As described above, the slider 1 is attached to the holder 2 (FIG. 7C).

``Problems to be Solved by the Invention'' In the conventional slider mounting method, the single slider l must be inserted into the recess 2d of the holder 2 while being sandwiched between a set of bins, resulting in extremely poor productivity. In this case, the slider 1 may be disassembled or the contact portion IC may be deformed.

SUMMARY OF THE INVENTION An object of the present invention is to solve these problems and provide a slider mounting method that is highly productive and free from the risk of the slider coming apart or the contact portion being deformed.

"Means for Solving the Problem" A slider for an electronic component made of metal and having a retaining protrusion formed at one end is replaced with a slider made of synthetic resin and having a concave portion on the slider mounting surface. In the method of attaching to the child holder,
In this invention, the step of inserting the retaining protrusion of the slider at the tip of the chain slider in which a plurality of the sliders are connected in the longitudinal direction into the recess of the slider holder; A process of cutting and separating the slider at the tip with a cutter, a process of bending the end to form a contact part, and a process of cutting the tip of the heating punch jig near the above-mentioned recess into which the retaining protrusion is inserted. A step of filling the recess by pressing the slider against the slider and filling the recess, and a step of filling the recess and bending the cut and separated portion near the base of the slider.

In the above attachment method, a step of forming the contact portions may be provided first at the stage of the chain slider.

Embodiment In the present invention, a plurality of sliders are connected in a chain in the longitudinal direction, as shown in FIGS. 2 and 3, to form a so-called chain-like component. In this figure, parts corresponding to those in FIG. 4 are given the same reference numerals. In Figure 2, a large number of thin metal wires 1
The metal wires a are arranged linearly in parallel and in a single layer, and retaining protrusions tb are welded at right angles to the thin metal wires la at equal intervals. In FIG. 3, a band-shaped metal plate 5 is used, and elongated lips are pushed out at equal intervals in the width direction to form the retaining protrusions 1b.
A large number of lance slits ld are formed parallel to the longitudinal direction at equal intervals in the section between the protrusions 1b, and the thin metal wire 1a is formed between the slits.

A method for attaching the chain slider 1 to the slider holder 2 described in ``Prior Art'' will be described in order of process. Base presentation group Arrange the chain-like slider so that its tip faces the recess 2d of the slider holder 2, and attach the tip of the slider feeding hook 6 to the retaining protrusion 1b of the slider 1-2. is engaged, the feed hook 6 is moved in parallel by a predetermined distance in the direction of the recess 2d, and the retaining protrusion 1b of the slider 1-1 is inserted into the recess 2d (FIG. 1A).

±11 The joint between the sliders 1-1 and 1-2 is cut and separated by a cutter 7, and the ends are
The contact part IC is formed by bending it at about 0 degrees (Fig. 1B
). The cutting and bending may be performed at the same time, or the cutting and bending may be performed after the cutting.

Recessed portion 2c into which the retaining protrusion of slider 1 is inserted
The tip of the heating punch jig 4 is pressed against the vicinity of the recess 2d to fill in the recess 2d (FIG. 1C).

m) After passing through the above steps) and (C), move a bending jig 9 (e.g. a roller) along the slider mounting surface 2c of the slider holder 2 to the side where the end of the slider is bent. The vicinity of the base of the slider 1 is bent by moving it relatively (in other words, it can be moved by either the jig 9 or the holder 2).
The order of the steps D and E) in FIG. Further, as the slider 1, a plate-shaped slider without lance slits Id in FIG. 3 may be used.

In the above-described embodiment, the contact portion 1c was formed by bending the end of the slider 1-1 at the same time or after cutting the slider 1-1 at the tip. However, the contact portions may be formed at the stage of the chained slider before the sliders are cut, and FIG. 4 is a diagram showing an embodiment thereof. Chain slider 1-2 and 1-
Contact bending cradle 1 is placed on both sides of the position where the connecting part with 3 is placed.
0 and a contact bending punch 11 are provided facing each other. A concave groove having an arcuate cross section is formed along the width direction of the slider on the end face of the contact bending pedestal 10 facing the chain slider, and on the other hand, facing the slider of the contact bending punch 1l. A protrusion that engages with the groove is formed on the end surface. The punch 1l collides with the pedestal IO and the chain slider 1-1.1-2.
Each end of . . . is sequentially bent into an arc shape to form a contact portion. After that, the already mentioned steps (a) ~
Implement (d). However, the work of bending the ends in step (b) is omitted. Figure 4B shows the arc-shaped contact part I.
This figure corresponds to FIG. 1B, and shows a state in which the separated slider 1-1 is accommodated in the recess 2d. "Effects of the Invention" According to the present invention, the slider is configured as a chain-like component, and the retaining protrusion of the slider is automatically inserted into the recess of the holder, allowing cutting (separation), bending, and Of course, filling in depressions and the like will also be automated. Therefore, productivity can be greatly improved compared to the conventional method, and at the same time, disintegration of the slider and deformation of the contact portion can be prevented.

[Brief explanation of drawings]

1A to 1E are cross-sectional views of the slider and slider holder in each assembly process of the embodiment of this invention, and FIG. 1F is the cross-sectional view of the slider and slider holder in FIG. 1E. 2 is a plan view showing an example of the chain slider shown in FIG. 1, A is a front view thereof, and B is a plan view.
is a left side view, C is a bottom view, FIG. 3 is a diagram showing another example of the chain slider shown in FIG. 1, A is a front view thereof, and B is a view taken along A-A.
sectional view, C is a B-8 sectional view, D is a CC sectional view, E is a bottom view, and FIG. 4 is a sectional view of the slider and slider holder in the assembly process of another embodiment of the present invention 5A and 5B are front and side views, respectively, of a conventional slider, FIG. 6 is a vertical cross-sectional view of a conventional slider holder, and FIG. 7 is a conventional slider mounting method. It is a sectional view of a slider and a slider holder shown for each assembly process.

Claims (2)

[Claims] (1) A method of attaching a slider of an electronic component made of metal and having a retaining protrusion formed at one end to a slider holder made of synthetic resin and having a recess provided on the slider mounting surface. Inserting the retaining protrusion of the slider at the tip of the chain slider in which a plurality of the sliders are connected in the longitudinal direction into the recess of the slider holder; A step of cutting and separating the slider with a cutter, a step of bending the end portion to form a contact portion, and a step of pressing the tip of the heating punch jig near the above-mentioned recess into which the retaining protrusion is inserted. A method for attaching a slider to an electronic component, comprising the steps of: filling the recess; and filling the recess and bending the cut and separated slider near its base. (2) A method of attaching a slider of an electronic component made of metal and having a retaining protrusion formed at one end to a slider holder made of synthetic resin and having a recessed part on the slider mounting surface. forming a contact portion on the chain slider; inserting the retaining protrusion of the chain slider at the tip into the recess of the slider holder; A step of cutting and separating the slider at the tip of the slider, a step of filling in the recess into which the retaining protrusion was inserted, and a step of filling in the recess and bending the vicinity of the base of the cut and separated slider. A method for attaching a slider for an electronic component, comprising: