JPH104003A - Slider plate for rotary electronic components - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary slider plate for an electronic component capable of simply structuring a rotary electronic component, decreasing a number of component, and being easily assembled as well as capable of providing a desirable rotary torque to the sliding body. SOLUTION: A board 30 and a sliding body 70 installed by a slider plate 40 are put on the holding pedestal 10, and they are covered by a cover 90. When rotating the sliding body 70, the slide contacts of the slider plate 40 slide-contact various patterns on the board 30. A projection 13 going through the board 30 is prepared on the holding pedestal 10. A torque plate 63 formed by a part of the slider plate 40 being bent to the direction of the board 30 is prepared at the position opposite to the projection 13 of the slider plate 40. The desired rotary torque is applied to the rotation of the sliding body 70 by an elastic contact between the lower face of the torque plate 63 and the upper circumference of the projection 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slider plate for a rotary electronic component used for a rotary variable resistor or a rotary switch.

[0002]

2. Description of the Related Art Conventionally, in a rotary variable resistor, a sliding type object made of synthetic resin is placed on a substrate, and an upper portion of the sliding type object is covered with a cover, and between the cover and the substrate, or The cover and the holding table disposed below the substrate are fixed, whereby the sliding type object is rotatably held.

[0003] When the sliding type object is rotated, a slider attached to the lower surface of the sliding type object comes into sliding contact with the resistor pattern and the current collecting pattern formed on the upper surface of the substrate. The resistance value between the pattern and the current collecting pattern changes.

When it is necessary to apply a desired rotation torque to the rotation of the sliding object, a resilient member (a leaf spring or the like) separate from the above-mentioned components is provided, for example, between the sliding object and the cover. And the elastic member springs between the slide-type object and the cover, thereby applying a desired rotational torque to the rotation of the slide-type object.

[0005]

However, when a resilient member for torque output is attached as described above, the structure is complicated, the number of parts is increased, and assembly is complicated, and the cost of the product is reduced. Not only cannot be achieved, but also its miniaturization is hindered.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to make it possible to simplify the structure of a rotary electronic component even though a desired rotational torque can be applied to a sliding type object. An object of the present invention is to provide a slider plate for a rotary electronic component that can reduce the number of points and can be easily assembled.

[0007]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention relates to a slider plate for a rotary electronic component having sliding contacts, wherein the slider plate is provided with the slider. A part of the plate is bent so as to protrude upward or downward from its surface, thereby providing a torque plate portion which elastically contacts another member.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 2 is an exploded perspective view showing a rotary variable resistor using the slider plate 40 according to one embodiment of the present invention. As shown in FIG. 1, the rotary variable resistor includes a film substrate 30 and a slider plate 4 on a holding table 10.
The slide type object 70 to which the slide type object 70 is attached and the cover 90 are attached, and the holding table 10 and the cover 90 are fixed to hold the slide type object 70 rotatably. Hereinafter, each component will be mainly described with reference to FIG.

The holding table 10 is formed by molding a synthetic resin. A substantially square concave holding section 12 is provided at the center of the holding table body 11, and a columnar projection is provided at the center of the holding section 12. 13, and a columnar small projection 15 having a diameter smaller than that of the projection 13 is provided at the center of the upper end surface of the projection 13, while a plate-shaped terminal holding portion 17 is provided outwardly from one side of the holding base body 11.
Are configured to protrude. A rectangular click engagement recess 18 is provided on the storage section 12. Around the storage portion 12, two notches 14a, 14a and one locking recess 14b are provided.

At the two corners of the upper surface of the holding base body 11, projections 19 are provided, respectively, and on the lower surface of the holding base body 11, recesses for engaging locking claws 95 of a cover 90 described below are provided. 21 (two at the left and right, but only two at the near side are shown in the figure).

Next, the film substrate 30 is made of a synthetic resin film made of, for example, polyethylene terephthalate and has a substantially disk shape. A circular hole 31 for inserting the projection 13 is provided at the center thereof. Various patterns (not shown) such as patterns are provided. Reference numeral 33 denotes a rectangular through-hole provided at a position facing the click engaging recess 18. Film substrate 3
On the outer periphery of the projections 0, the projections 30a, 30 engage with the notches 14a, 14a of the holding base 10 and the locking recesses 14b, respectively.
a and 30b are provided.

A metal terminal fixing portion 36 to which five metal terminals 35 are attached is provided on the end of the various patterns (not shown) of the film substrate 30. The metal terminal fixing portion 36 is formed by joining an end of the metal terminal 35 to each end of each of various patterns (not shown) of the film substrate 30 via a conductive adhesive layer, and fixing a synthetic resin terminal thereon. A film 37 is placed, and the space between the film substrate 30 and the terminal fixing film 37 is locally formed (on both sides of the metal terminal 35).
It is configured by heat welding and fixing.

Next, the sliding mold 70 is formed by molding a synthetic resin, and a cylindrical knob is inserted from the center of a disk-shaped mold main body 71 having a diameter that can be inserted into the storage section 12 of the holding table 10. 72 is projected.

On the outer periphery of the mold body 71, there is provided an engagement projection 75 for restricting the rotation of the slide mold 70.

Here, FIG. 3 is a view showing the sliding type object 70, wherein FIG. 3 (a) is a side sectional view and FIG. 3 (b) is a bottom view.

As shown in the figure, a circular concave portion 73 having a size and shape for rotatably inserting the small projection 15 of the holding table 10 is provided at the center of the lower surface of the mold main body 71. Also, three locking projections 76 project from the lower surface of the mold body 71, and four arc-shaped projections 77 project from the outer periphery of the lower surface of the mold body 71.

FIG. 4 is a view showing a slider plate 40.
FIG. 1A is a plan view, and FIG. 1B is an A-A view of FIG.
It is sectional drawing.

As shown in FIG. 2 and FIG.
0 is formed by punching an elastic metal plate into a substantially circular shape, a circular hole 41 having a size and shape penetrating the small projection 15 of the holding base 10 is provided at the center thereof, and three through holes 42 are provided at predetermined positions thereof. Is provided. In the slider plate 40, there is provided one arm portion 43 cut out in an arc shape, and on the other side, three arm portions 4 cut out in an arc shape.
5, 47 and 49 are provided.

At the center of each of the arms 43, 45, 47, a sliding contact 5 is formed which is bent so as to project downward.
3, 55 and 57 are provided, and a click portion 59 which is bent at the center of the arm portion 49 so as to protrude downward.
Is provided.

Incidentally, two torque plates 63, 63 are provided around the circular hole 41 of the slider plate 40 by providing notches 61, 61 in a substantially arc shape. Each of these torque plate portions 63 is bent obliquely downward.

Returning to FIG. 2, the cover 90 is formed by bending a metal plate into a substantially box shape having an open lower surface, and has a hole 91 in the center thereof for inserting the knob 72 of the sliding mold 70.
Is provided. On the side of the hole 91, there is provided a tongue-shaped locking piece 93 which abuts against and locks the engaging projection 75 provided on the sliding mold 70 so as to face downward. I have.

Two locking claws 95 protrude from the lower ends of both sides of the cover 90 facing each other (however, only two front claws are shown in FIG. 2).

The cover 90 has two protrusions 9 for fixing the rotary electronic component to another substrate (not shown).
7, 97 are provided.

At two corners of the cover 90, the holding table 10 is provided.
Holes 99, 99 that engage with the projections 19, 19 are provided.

Next, a method of assembling the rotary variable resistor will be described mainly with reference to FIG. That is, first, the sliding type object 7
The slider plate 40 is attached to the lower surface of the zero mold body 71.
The attachment is performed by inserting three locking projections 76 (see FIG. 3) provided on the mold main body 71 into the three through holes 42 of the slider plate 40, respectively. By doing it.

At this time, the position of the concave portion 73 on the lower surface of the mold body 71 and the position of the circular hole 41 of the slider plate 40 match.

Next, the film substrate 30 is stored in the storage section 12 of the holding table 10. At this time, the projection 13 of the holding table 10
Is inserted into the circular hole 31 of the film plate 30 and penetrates the film substrate 30. Further, the metal terminal fixing portion 36 of the film substrate 30 is mounted on the terminal holding portion 17 of the holding base 10.

Next, the mold main body 71 is inserted into the accommodating portion 12, and the small projection 15 of the holding table 10 is rotated into the circular hole 41 of the slider plate 40 and the concave portion 73 of the mold main body 71. Insert freely.

Then, a cover 90 is put on the holding table 10 from above the sliding mold 70, and at this time, the knob 72 is inserted into the hole 91.
And the projections 19 of the holding table 10 are
9,99.

The right and left locking claws 95, 95 of the cover 90 are bent at the lower surface of the holding base 10 to form the concave portions 21,
Engage with 1.

FIG. 1 is a side sectional view of the rotary variable resistor assembled as described above. As shown in the figure, the rotary variable resistor holds the sliding object 70 between the holding base 10 and the cover 90 so as to be freely rotatable. When the sliding type object 70 is rotated, the sliding contact 5
3, 55, 57 (see FIG. 4) slide on various patterns (not shown) on the film substrate 30, and the resistance value between the metal terminals 35 changes. The locking projection 75 of the sliding type object 70
(See FIG. 2) abuts against the locking piece 93, whereby the rotation thereof is regulated.

FIG. 5 is an enlarged side sectional view of a main part of a portion where the concave portion 73 on the lower surface of the sliding mold 70 is engaged with the small projection 15 of the holding base 10.

As shown in FIG.
, And at the same time, the lower surfaces of the torque plate portions 63, 63 provided on the slider plate 40 attached to the lower surface of the sliding die 70 are resilient to the outer periphery 13a of the upper end of the projection 13 of the holding base 10. In contact.

Accordingly, the torque plate portions 63, 63 and the projection 13
When the sliding type object 70 is rotated, a predetermined rotational torque is generated due to the elastic contact resistance with the outer periphery 13a of the upper end of the sliding type object.

Next, FIG. 6 is an enlarged side sectional view showing a main part of another embodiment of the present invention, and shows the same part as FIG. The embodiment shown in the figure differs from the embodiment shown in FIGS. 1 to 5 in that a small projection 73-2 is provided instead of the recess 73 on the lower surface of the sliding mold 70, The only difference is that a recess 15-2 is provided instead of providing the small projection 15 at the center of the upper end surface of the projection 13, and the two are rotatably engaged.

The torque plates 63, 6 of the slider plate 40
The application of a predetermined rotational torque to the rotation of the sliding object 70 by the elastic contact of the protrusion 3 with the outer periphery 13a of the upper end of the projection 13 is the same as in the above embodiment.

In the above embodiment, the torque plates 63, 6
3 is configured to abut on the projection 13.
The torque plate portions 63, 63 can be directly
The torque may be applied by abutting on zero.

Although the rotary variable resistor is used in the above embodiment, the present invention is not limited to this, and it goes without saying that the present invention can be applied to other rotary electronic components such as a rotary switch.

[0039]

As described above in detail, according to the present invention, the slider plate itself is provided with the torque plate portion for generating a rotational torque, and the torque plate portion is used for rotating the sliding type object. Although it is possible to apply the rotational torque, there is no need to separately attach a member for generating torque, and the rotary electronic component has an excellent effect that the structure and assembly of the rotary electronic component are simple and the size thereof can be reduced.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a rotary variable resistor.

FIG. 2 is an exploded perspective view showing a rotary variable resistor using one embodiment of the present invention.

3A and 3B are views showing a sliding type object 70, wherein FIG. 3A is a side sectional view and FIG. 3B is a bottom view.

4A and 4B are views showing a slider plate 40, wherein FIG. 4A is a plan view, and FIG. 4B is a sectional view taken along line AA of FIG.

FIG. 5 is an enlarged side sectional view of a main part of the present invention.

FIG. 6 is an enlarged side sectional view of a main part of another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Holder 13 Protrusion 13a Outer periphery of upper end 15 Small protrusion 30 Substrate (film substrate) 40 Slider plate 53, 55, 57 Sliding contact 63, 63 Torque plate 70 Sliding object 73 Recess 15-2 Recess 73- 2 small protrusions

Claims (1)

[Claims] 1. A slider plate for a rotary electronic component having sliding contacts, wherein said slider plate has a part of said slider plate directed upward or downward from its surface. A slider plate for a rotary electronic component, comprising a torque plate portion which is bent so as to protrude and elastically contacts another member.