JPH0745928Y2 - Slide operation type electric parts - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a slide operation type electric component such as a slide operation type variable resistor and a slide operation type switch, and more particularly to a structure for mounting on a printed circuit board. is there.

[Prior Art] FIGS. 5 to 7 are explanatory views of a conventional example, FIG. 5 is a perspective view of a slide operation type variable resistor including a printed circuit board, FIG. 6 is a front view including the printed circuit board, and FIG. FIG. 7 is a side view thereof.

In the drawing, 1 is a slide operation type variable resistor, 2 is a resistance substrate made of phenol resin or the like which forms a rectangular flat plate shape, and has a first edge portion 3 extending in a longitudinal direction and a first edge portion 3 extending in a lateral direction. And 2 edges 4. Reference numeral 5 is a resistor formed by printing on one surface of the resistance substrate 2 along the first edge portion 3, and 6 is a current collector provided on one surface of the resistance substrate 2 in parallel with the resistor 5. Terminals 7 connected to both ends of the resistor 5 are fixed along the first edge portion 3. The terminal 7 on the left side of FIG. 5 is provided with a first leg 8a bent in a dogleg shape, and the terminal 7 on the right side is bent in an inverted V shape facing the leg 8a. The first leg portion 8b is provided, and both leg portions 8a and 8b are elastically deformable along the first edge portion 3 of the resistance substrate 2.

Further, terminals 7 connected to both ends of the current collector 6 are fixed to both ends of the current collector 6 along the first edge portion 3. The second terminal 7 on the left side of FIG. 5 is bent in a dogleg shape.
Is provided with a leg portion 9a, and the right terminal 7 is provided with a second leg portion 9b that is bent in an inverted V shape so as to face the leg portion 9a. It is elastically deformable along the first edge 3 of the substrate 2. Reference numeral 10 denotes a box-shaped slider support, a knob 12 is provided on the upper wall 11 so as to project, and side walls 13 facing each other,
And a hole 15 through which the resistance substrate 2 penetrates the upper and lower walls 11 and 14 and is slidable on the lower surface of the upper wall 11 of the slider receiver 10 facing the resistor 5 and the current collector 6. The pendulum 16 is fixed.

To attach the above variable resistor 1 to the printed circuit board 17,
As shown in FIG. 6, the first leg portions 8a and 8b are folded inward and inserted into the mounting holes 18 and 19 of the printed circuit board 17, and the leg portions 8a and 8b are inserted.
The upper portions of the cross-shaped portion B and the inverted cross-shaped portion C are snapped on the lower surface of the printed circuit board 17. In the same manner, the second leg 9a and the second leg 9b are also printed on the printed circuit board 17
It is inserted into the holes 18 and 19 of the printed circuit board 17 and is snapped on the lower surface of the printed circuit board 17.

[Problems to be Solved by the Invention] By the way, the first legs 8a and 8b are formed in the holes 18 and 19 of the printed circuit board 17, respectively.
When the second leg portions 9a, 9b are snap-fastened to the holes 18, 19 of the printed circuit board 17 at the same time, the first leg portions 8a, 9b
8b and the second leg portions 9a, 9b are positioned on the holes 18, 19, and both ends of the resistance board 2 in the longitudinal direction are pushed into the printed board 17. As a result, the first direction which is the longitudinal direction of the resistance substrate 2
Since a force acts in a direction along the edge portion 3 of the slider, the snap operation is performed and the slide operation type variable resistor 1 is held by the printed board 17, the first edge of the resistance substrate 2 having a weak flexing resistance in the longitudinal direction. A bending force is generated along the portion 3, and the resistance substrate 2 bends as shown by the chain double-dashed line in FIG.

If the resistance substrate 2 bends along the first edge 3 in the longitudinal direction in this way, the slider receiver 10 will not move smoothly, and the slider 16 and the resistor 5 and the current collector will not move. Since the contact pressure with the body 6 changes, desired resistance value changing characteristics cannot be obtained, and there is a problem that the sliding life is shortened.

The present invention is for solving the above problems,
An object of the present invention is to prevent the deflection that occurs along the first edge in the longitudinal direction of the insulating substrate during mounting on the printed circuit board, to ensure smooth movement of the slider receiver, and to insulate the slider from the insulator. An object of the present invention is to provide a slide operation type electric component in which the contact pressure with a pattern on a substrate does not always change.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a first edge portion extending in the longitudinal direction and a second edge portion extending in the lateral direction orthogonal to the first edge portion. A first leg portion having an inverted V-shaped outer shape that is elastically deformable along the second edge portion of a flat plate-shaped insulating substrate having an edge portion; and a second leg portion having a dogleg shape. The first and second legs are flat plates, and the second edge of the insulating substrate and the planes of the flat plates of the first and second legs are parallel to each other. The side surfaces of the first and second legs are cut out to form a dogleg shape and an inverted dogleg shape, respectively.

[Operation] According to the above configuration of the present invention, the first and second leg portions are provided along the second edge portion of the resistance substrate in the short-side direction where the resistance substrate has high flex resistance, so that the first and second leg portions are provided. Even if the second leg is snapped into the mounting hole of the printed board, the insulating board does not bend along the first edge 3.

Therefore, the slider receiver can move smoothly along the insulating substrate, and the contact pressure between the slider and the pattern on the insulating substrate can be kept constant at all times.

[Embodiment] An embodiment of the present invention will be described below with reference to the accompanying drawings.

1 to 4 are explanatory views of an embodiment of the present invention. FIG. 1 is a perspective view of a slide operation type variable resistor including a printed circuit board, FIG. 2 is a front view thereof, and FIG. 3 is a printed circuit board. FIG. 4 is a side view including FIG. 4 and FIG.

The same parts as those of the conventional example shown in FIGS. 5 to 7 are designated by the same reference numerals, and the duplicated description will be omitted.

In the present invention, the first legs 8a and 8b connected to both ends of the resistor 5 via the terminals 7 are provided along the first edge 3 in the longitudinal direction of the resistor substrate 2 and the current collector 6 is connected. Terminal 7 at both ends
The second leg portions 9a and 9b connected to each other are provided, and the first leg portion 8
a and the second leg 9a are elastically deformable along the second edge 4 in the lateral direction of the resistance substrate, and the first leg 8a has an inverted V-shape. The second leg 9a has a dogleg shape.

In addition, the first leg portion 8b and the second leg portion 9b are the resistance substrate 2
Is elastically deformable along the second edge portion 4 in the lateral direction of the first leg portion 8b, and the first leg portion 8b has a dogleg shape, and the second leg portion 9b has an inverted dogleg shape. Have.

To attach the first and second legs 8a and 9a to the attachment holes 18 and 18 of the printed circuit board 17, as shown in FIG. 3, the legs 8a and 9a are attached.
Is bent inward along the second edge 4 in the lateral direction and inserted into the mounting holes 18 and 18, and the upper portions of the inverted V-shaped portion D and the inverted V-shaped portion E are removed. The bottom surface of the printed board 17 is snap-fastened.

In exactly the same manner, the first leg portion 8b and the second leg portion 9b are also inserted into the mounting holes 19 and 19 of the printed circuit board, and the inverted V-shaped portion D,
The upper portion of the dogleg-shaped portion E is snapped on the lower surface of the printed circuit board 17.

In order to attach the pair of terminals 7, 7 along the second edge 4 of the resistance substrate 2, as shown in FIG.
A plurality of pairs of terminal groups 7 connected by 20 are attached along the second edge portion 4 of the resistance substrate 2 in a state of being developed in the longitudinal direction of the resistance substrate 2, and then cut at a predetermined position.

In the above embodiment of the present invention, the first leg portion 8a and the second leg portion 9a are elastically deformably attached along the second edge portion 4 on one side of the resistance substrate 2, and the first leg portion 8a and the second leg portion 9a are attached. The second leg 8b and the second leg 9b are elastically deformable along the second edge 4 on the other side of the resistance substrate 2. That is, the leg portions 8a and 9a are connected to the holes 18 of the printed circuit board 17,
18 or when inserting the leg portions 8b and 9b into the holes 19 and 19 of the printed board 17, the leg portions 8a and 9a and the leg portions 8b and 9b are inserted into the holes 18 and 18 and the hole 19 of the printed board 17, respectively. , 19 and position both ends of the resistance board 2 in the longitudinal direction on the printed board 17.
Push against. As a result, the legs 8a, 9a and the legs 8b,
9b is inserted through the holes 18 and 18 and the holes 19 and 19, and the slide operation type variable resistor 1 is held on the printed board 17. At this time,
The legs along the second edge 4 which is the lateral direction of the resistance substrate 2
The slide operation type variable resistor 1 is snap-fastened by the elastic force of the legs 8a, 9a and the legs 8b, 9b, but the second edge 4 in the lateral direction of the resistance substrate 2 is the first edge 3 Since the flexure resistance is sufficiently large as compared with the above, the resistance body 2 does not bend along the first edge portion 3.

Therefore, the slider receiver 10 that moves along the first edge portion 3 of the resistance substrate 2 moves smoothly, and the contact pressure between the slider 16 and the resistor 5 and the current collector 6 is It is always constant. Therefore, a desired resistance value change characteristic can be obtained by moving the slider receiver 10.

Further, as mentioned above, a group of a pair of terminals 7, 7 are connected by a plurality of sets of hoop members 20 and can be expanded in the longitudinal direction of the resistance substrate 2, and the pitch A between the terminal groups can be made sufficiently narrow. You can do it. Therefore, the material is very good.

Although the above-mentioned embodiments are about the variable resistor, the present invention can be applied to the slide operation type switch. In this case, the movement of the slider 10 is smooth, and the slider 16 and the insulating substrate 2 are not moved. The contact pressure with the switch pattern of the
The contact resistance between 16 and the switch pattern can always be kept constant.

[Effects of the Invention] As described above, according to the present invention, since the first and second legs are flat plate-shaped and have an inverted V-shape and an inverted V-shape, the slide operation type electric The component can be mounted compactly, and at the same time, it is possible to prevent rattling after mounting, and when the slide operation type electrical component is snap-fastened to the printed circuit board, the insulating substrate has the first edge in the longitudinal direction. Since there is no bending along the part, the slider receiver can be moved smoothly and the material of the terminal is good, and the contact pressure between the slider and the pattern on the insulating substrate is always constant. You can

[Brief description of drawings]

1 to 4 are explanatory views of an embodiment of the present invention. FIG. 1 is a perspective view of a slide operation type variable resistor including a printed circuit board, FIG. 2 is a front view thereof, and FIG. 3 is a printed circuit board. FIG. 4 is a side view including FIG. 4, FIG. 4 is an explanatory view of a state in which terminals are attached to a resistance substrate, FIGS. 5 to 7 are explanatory views of a conventional example, and FIG. 5 is a slide operation type variable resistor including a printed circuit board. A perspective view, FIG. 6 is a front view including a printed circuit board, and FIG. 7 is a side view. 1 ... Variable resistor, 2 ... Resistor substrate (insulating substrate), 3 ...
... first edge, 4 ... second edge, 5 ... resistor (pattern), 6 ... current collector (pattern), 7 ... terminal, 8a, 8
b, 9a, 9b …… Legs, 10 …… Slider holder, 16 …… Slider, 17
…… Printed circuit board, 18,19 …… Mounting hole, 20 …… Hoop material.

Claims (1)

[Scope of utility model registration request] 1. A first edge portion extending in the longitudinal direction,
A first flat plate-shaped insulating substrate having a second edge extending in the lateral direction orthogonal to the first edge having a reverse V-shaped outer shape elastically deformable along the second edge. A leg portion and a dogleg-shaped second leg portion are provided so as to face each other, the first and second leg portions are flat plates, and the second edge portion of the insulating substrate and the first and second leg portions are provided. The slide operation is characterized in that the flat plate surfaces of the legs are formed in parallel, and the side surfaces of the first and second legs are cut out to form a dogleg shape and an inverted dogleg shape, respectively. Mold electrical parts.