JPS6356681B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a method of manufacturing a slider to be assembled into a variable resistor or the like.

[Prior art and its problems]

A slider attached to a variable resistor or the like is composed of a rotor and a slider piece attached to the rotor. By the way, this slider piece was assembled to the rotor by hand. Therefore, the conventional slider has the following problems.

(1) The number of man-hours required increases, leading to an increase in the cost of the product.

(2) In addition, this type of slider has a small shape, so it is difficult to manually handle it with poor productivity.

(3) Particularly, in a type of slider in which slider pieces are attached to both sides of the rotor, it is difficult to align the two slider pieces with each other, and there is a drawback that the interlocking error during operation becomes large.

[Object of the present invention]

The present invention has been made by focusing on the above-mentioned conventional problems, and is of a type that not only improves productivity and reduces product costs, but also has slider pieces assembled on both sides of the rotor. However, it is an object of the present invention to provide a method for manufacturing sliders that allows mutual alignment to be performed with high precision.

[Configuration of the present invention]

The method for manufacturing a slider according to the present invention includes forming a support arm connected to a hoop material and a slider piece located at the tip of the support arm by press working, and then forming a connecting portion fixed to the hoop material. The rotor connected to the tip of this connection part and adjacent to the slider piece is outsert molded with resin, and then the support arm is bent to make the slider piece face the rotor, and then this sliding The child piece is fixed to the rotor, and finally the support arm is cut to separate the slider piece from the hoop material, and the rotor is separated from the connecting portion.

[Example of the present invention]

Embodiments of the present invention will be described below with reference to the drawings.

Fig. 1 is a side view of the slider, Fig. 2 is a plan view of Fig. 1, Fig. 3 is a side view of the rotor, Fig. 4 is a plan view of Fig. 3, and Fig. 5 is a plan view of the slider piece. Plan view, Figure 6,
FIG. 7 is a plan view of the hoop material, and FIGS. 7a to 7i are side views showing the manufacturing process of the slider.

(Structure of Slider) The slider 1 shown in FIGS. 1 and 2 is assembled into a variable resistor or the like. The slider 1 is composed of a rotor 2 and two slider pieces 3 attached to both sides of the rotor 2. This rotor 2 is molded with resin, and bosses 2b are protruded from both sides of a flange 2a in opposite directions. this boss 2
A fitting portion 2c for the slider piece 3 is formed at the base of b. Note that two protrusions 2d are formed on each side of the flange 2a. On the other hand, the slider piece 3 is formed by pressing a hoop material, and as shown in FIG. A flange 3b formed in a fan shape on one side is provided with a hole 3c to be caulked to the projection 2d, and a sliding brush 3d extending concentrically with the hole 3a is integrally formed. ing. This sliding brush 3d is brought into sliding contact with a resistor (not shown) printed on the substrate of the variable resistor.

(Manufacturing process of slider) Next, the process of manufacturing the slider 1 having the above structure will be explained with reference to FIG. 6 and subsequent drawings.

First, the roll-shaped hoop material 4 is sent out one by one to a press machine. Then, this hoop material 4 is punched and formed. Then, as shown in FIG. 6, mutually symmetrical slider pieces 3 are formed in the punched portion 4a of the hoop material 4. This slider piece 3 is connected to the tip of a support arm 4b extending from the longitudinal center of the hoop material 4 to both sides in a U-shape. On the other hand, a hole 5 is bored between the slider pieces 3 above the drawing. This hole 5
In this case, a connecting portion 6 connected to a rotor 2, which will be described later, is outsert. Furthermore, holes 4c are formed on both sides of the hoop material 4, into which support pins to be described later are inserted.

Next, the hoop material 4 press-formed into a predetermined shape is transported to a cleaning process (RT treatment), and then integrally attached to the flange 2a of the rotor 2 with respect to the hole 5 of the hoop material 4 as shown in FIG. The resin-molded connecting portion 6 is outsert. Then, the rotor 2 faces the middle of the slider pieces 3. This state is shown in a side view as shown in FIG. 7a.

In this state, the hoop material 4 is conveyed to the next process. Then, first, the hole 4c is hooked onto the support pin, and the hoop material 4 is positioned. Then,
The mutually symmetrical slider pieces 3 are bent at 45 degrees in opposite directions from the tip of the support arm 4b (section A in FIG. 7) (the state shown in FIG. 7b).

Next, the middle of the support arm 4b (section B in FIG. 7) to which one slider piece 3 (right side in the drawing) is connected is moved in the same direction as the bending direction of the slider piece 3 (lower side in the drawing).
It is erected at 90 degrees (the state shown in Figure 7c).

Thereafter, the center portion of the support arm 4b (section C in FIG. 7) is bent up, and the slider piece 3 is opposed to the boss 2b on the lower side of the rotor 2 (the state shown in FIG. 7d).
Then, the slider piece 3 is pressed in the direction of the boss 2b, and the hole 3a of the slider piece 3 is press-fitted into the fitting part 2c formed at the base of the boss 2b (the state shown in FIG. 7e). Then, the slider piece 3 comes into contact with the flange 2a of the rotor 2, and the hole 3c drilled in the flange 3b is attached to the protrusion 2d protruding from the flange 2a (see FIGS. 1 to 5). (see figure). Then, the protrusion 2d is heated and melted, and the slider piece 3 is caulked to the flange 2a.

Next, the other slider piece 3 (on the left side in the drawing) is caulked to the flange 2a of the rotor 2 in the same process as in Figs. 7c to 7e above (Figs. 7f to 7
condition shown in figure h).

Note that the process of melting the protrusions 2d and caulking the slider pieces 3 is to attach each slider piece 3 to the top and bottom of the rotor 2.
After installing (after the step shown in Fig. 7h), the upper and lower parts may be performed at the same time.

Thereafter, as shown in FIG. 7i, a sliding brush 3d continuous with the flange 3b of the slider piece 3 is bent and erected.

Finally, the connecting portion 6 and support arm 4b that support the rotor 2 and slider piece 3 are separated. As a result, the slider 1 is manufactured (Fig. 1,
(See Figure 2).

In the illustrated embodiment, the slider pieces 3 are attached to both sides of the rotor 2, but they may be attached only to one side.

[Effects of the present invention]

As described above, according to the present invention, the following effects can be achieved.

(1) A slider piece is connected to a hoop material punched out in a pressing process via a support arm, and then a connection part is outsert to this hoop material, and a rotor connected to this connection part is attached to a slider piece. adjacent to
Thereafter, the support arm is bent and formed so that the slider piece faces the rotor, then the slider piece is attached to the rotor, and finally the support arm and the connecting part are separated from the slider piece and the rotor. Since the sliders are automatically assembled, workability is improved and product costs are significantly reduced.

(2) Furthermore, since it is automatically manufactured, productivity is not affected even if the shape of the slider is minute.

(3) Furthermore, when the slider piece is attached to the rotor, the rotor and slider piece are supported by the hoop material by the connection part and the support arm, so misalignment occurs. In particular, in the rotor of the type in which slider pieces are mounted on both sides of the rotor, there is no possibility that the slider pieces 3 will be misaligned with each other. Therefore, no interlock error will occur between the two during operation.

[Brief explanation of drawings]

The drawings show embodiments of the present invention.
The figure is a side view of the slider, Figure 2 is a plan view of Figure 1,
Fig. 3 is a side view of the rotor, Fig. 4 is a plan view of Fig. 3, Fig. 5 is a plan view of the slider piece, Figs. 6 and 7 are plan views of the hoop material, and Figs. 7a to 7a. FIG. 7i is a side view showing the manufacturing process of the slider. DESCRIPTION OF SYMBOLS 1... Slider, 2... Rotor, 3... Slider piece, 4... Hoop material, 4b... Support arm, 6...
...connection section.

Claims (1)

[Claims] 1. By press working, a support arm connected to the hoop material and a slider piece located at the tip thereof are formed, and then a connecting portion fixed to the hoop material and a slider piece connected to the tip of this connecting portion and the above-mentioned The rotor adjacent to the slider piece is outsert molded with resin, then the support arm is bent to make the slider piece face the rotor, then this slider piece is fixed to the rotor, and finally A method of manufacturing a slider comprising cutting the support arm to separate the slider piece from the hoop material and separating the rotor from the connection part.