JPH09298106A - Electrical component and assembly thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To position an insulator and a rotator at prescribed positions to assemble electrical component without providing specially positioning member by a method wherein a through hole formed in the insulator and a through hole formed in the rotator are provided at an equal distance from a pivot to the through holes. SOLUTION: A chamfering is formed in a corner on the side on one side of the sides in the longitudinal direction of a roughly rectangular mounting plate 11 and a projection 11a is formed ion a corner on the other side in the longitudinal direction of the plate 11 in such a way as to vent upward. A pivot 11b is formed integrally with the plate 11 in such a way as to project upward in the roughly central part of the plate 11 by a draw processing or the like and the projection length of the pivot 11b is formed a little longer than the lamination dimension of an insulator 12, a substrate 13 and a rotator 14. Moreover, a through hole 11h is formed in closer to the outside of the narrow flat part on the outside of an opening 11e formed in the plate 11 and this hole and a through hole 12h formed in the insulator 12 are provided at an equal distance from the pivot 11b to the holes 11h and 12h. Thereby, even of a member for positioning use is not specially provided, the positioning accuracy of the rotator 14, which is provided with the plate 11, the insulator 12 and the substrate 13, can be enhanced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to electric parts used in various audio equipments, communication devices and the like.

[0002]

2. Description of the Related Art A conventional electric component will be described by taking a rotary variable resistor disclosed in Japanese Utility Model Laid-Open No. 63-40301 as an example. This electric component, that is, the rotary variable resistor will be described with reference to FIGS. In FIG. 8, a circular knob 1 made of molded resin, a circular hole 1a in the center thereof, and a thin annular portion 1b near the outer periphery of the lower surface. Further, the circular arc-shaped groove 1 is provided on the outer peripheral side of the annular portion 1b.
d is formed with a stopper portion 1e. Inside the annular portion 1b, a circular resistance substrate 2 made of an insulating material as shown in FIG. 10 is arranged with a circular hole 2a in the center thereof correspondingly. At this time, the resistance substrate 2
By inserting the notch 2b into the protrusion 1c of the knob 1, the resistance substrate 2 is positioned and mounted on the knob 1 without play. The resistance printed layer 2c and the circular conductor printed layers 2d and 2e are formed on the other surface of the resistance substrate 2.
Are arranged concentrically with respect to the circular hole 2a of the resistance substrate 2.

Further, a stepped column 3a for supporting the circular hole 1a of the knob 1 is provided at the center of the base portion 3 made of an insulating resin.
And rotatably fitting and supporting the knob 1, and inserting and fitting a spacer 4 at the tip of the stepped strut 3a protruding above the stepped strut 3a by a method such as thermal caulking.
The tip of the knob is pushed open and the knob 1 is retained and held.
Further, the protrusion 3b of the base portion 3 fits into the arc-shaped groove 1d of the knob 1 and also comes into contact with the stopper portion 1e to serve as a stopper for restricting the rotation angle of the knob 1. The flat plate portion of the base portion 3 is made of an elastic metal, and is in contact with the resistance printing layer 2c and the circular conductor printing layers 2d and 2e on the other surface of the resistance substrate 2 in contact with the contact portions 5a and 5b.
-Three independent elastic contact bodies 5 having 5c are insert-molded at their roots and extended to the outside of the base body 3 to form external connection terminals 5d, 5e, 5f.

In the conventional rotary variable resistor having such a structure, the stepped support pillar 3a of the base portion 3 is provided with the circular hole 1a of the knob 1.
Is inserted, and the tip of the stepped support column 3a protruding from the circular hole 1a is spread by thermal caulking or the like to hold the knob 1. However, when the stepped column 3a is inserted into the circular hole 1a, the protrusion 3b is mounted on the stopper portion 1e of the knob 1 while the protrusion 3b of the base body portion 3 is not fitted in the groove 1d of the knob 1. There was a problem that the rotary variable resistor became defective due to the heat crimping. Further, even if the protrusion 3b of the base portion 3 is fitted into the groove 1d of the knob 1 and assembled, there is nothing for determining the position of the knob 1 in the rotation direction.
It was not possible to assemble the protrusions 3b of the base body portion 3 that fit in d so that the positions are always fixed. for that reason,
For example, the workability such as rotating the assembled product to perform an electrical inspection was poor. Further, when the rotary type variable resistor in which the position of the protrusion 3b is not constant is immediately incorporated into a set of audio equipment or the like as a variable resistor for adjusting the volume, the knob 1 is rotated to the position where the volume is the minimum, that is, the stop end. Had to be incorporated from. Alternatively, after the assembly of the conventional rotary variable resistor is completed, a step of manually rotating the knob 1 to the stop end on one side to bring the protrusion 3b into contact with the stopper portion 1e of the knob 1 is added. Was there.

[0005]

According to the conventional rotary variable resistor which is an electric component, the circular hole 1a of the knob 1 is inserted into the stepped column 3a of the base portion 3 to hold the knob 1. There is. However, when the stepped column 3a is inserted into the circular hole 1a, the projection 3b of the base portion 3 does not fit into the groove 1d of the knob 1 and is heat-crimped while riding on the stopper portion 1e of the knob 1. However, there is a problem that the rotary variable resistor becomes defective. Further, in the conventional rotary type variable resistor, since there is no means for determining the position of the knob 1 in the rotation direction, the position of the protrusion 3b of the base portion 3 fitted in the groove 1d of the knob 1 is always constant. I couldn't assemble like this. Therefore, it is difficult to perform the inspection process after the assembly of the rotary variable resistor is completed. Alternatively, since the step of rotating the knob 1 to the stop end on one side to bring the protrusion 3b into contact with the stopper portion 1e of the knob 1 is added, there is a problem that the assembly takes time and the cost is increased.

[0006]

As a first means for solving the above problems, an insulator having a through hole, a rotating body having a through hole, and a spindle for combining the rotating body with the insulator are provided. The through hole of the insulator and the through hole of the rotating body are provided at the same distance from the support shaft. . Further, as a second means for solving the above-mentioned problems, the rotating body having a combination of substrates and the substrate having a through hole are provided, and the through hole of the substrate, the through hole of the insulator, and the through hole of the rotating body are provided. The hole and the support shaft are provided at the same distance. Further, as a third means for solving the above-mentioned problems, the insulating body combined with a mounting plate and the substrate having a support shaft and a through hole are provided, and the through hole of the mounting plate and the through hole of the insulating body are provided. The through hole of the substrate and the through hole of the rotating body are provided at the same distance from the support shaft. Further, a fourth solution to the above-mentioned problem is provided.
As the means, a through hole is provided on the outer side of each of the mounting plate, the insulator, the substrate, and the rotating body. Further, as a fifth means for solving the above problems, the mounting plate having a flat portion, the insulator having a slider piece made of a metal plate, the substrate having a circuit pattern, and the substrate mounting portion are provided. The rotating plate, the through hole of the mounting plate is located outside of the flat portion, the through hole of the insulator is located outside of the metal plate, and the through hole of the substrate is located outside of the circuit pattern. In addition, the through hole of the rotating body is provided outside the board mounting portion. In addition, as a sixth means for solving the above-mentioned problems, through holes of an insulator, through holes of a substrate, and through holes of a rotating body formed at equal distances from a spindle are sequentially inserted into positioning pins of an assembly jig. Then, the substrate and the rotating body are sequentially stacked on the insulator to be assembled. Further, as a seventh means for solving the above-mentioned problems, a mounting hole formed in the insulator, the substrate and the rotating body is inserted into a support shaft provided in a mounting plate, and an assembling jig is provided. Inserting the through holes of the mounting plate, the through holes of the insulator, the through holes of the substrate, and the through holes of the rotating body, which are formed in the positioning pin at the same distance from the support shaft, in order to form an insulator on the mounting plate The substrate and the rotating body are sequentially stacked and assembled.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION A rotary variable resistor will be described below as an example of an embodiment of an electric component of the present invention with reference to FIGS.
This will be described with reference to FIG. The electric component of the present invention, that is, the rotary variable resistor, includes a metal mounting plate 11 in FIG. 1, an insulator 12 placed on the upper surface of the mounting plate 11, and an upper surface of the insulating body 12, The rotating body 14 to which the substrate 13 is attached is sequentially stacked.

First, the mounting plate 11 has a substantially rectangular shape, and a chamfer is formed at one corner on one side in the longitudinal direction thereof. Also,
A protrusion 11a is formed by bending upward on one corner on the other side. A supporting shaft 11b is integrally formed with the mounting plate 11 so as to project upward at a substantially central portion of the mounting plate 11 by drawing or the like. The protruding length of the support shaft 11b is formed to be slightly longer than the stacking size of the insulator 12, the substrate 13, and the rotating body 14. Further, between the end face 11c of the mounting plate 11 and the support shaft 11b, a pair of cut-and-raised parts that are bent from the inside toward the outside including the central portion in the longitudinal direction of the mounting plate 11 and bent downward. Mounting legs 11d and 11d are formed with an opening 11e therebetween. The mounting leg 11d is formed near the one end side 11m and the other end side 11n of the mounting plate 11.
In addition, a crosspiece 11f is provided between the openings 11e and 11e formed by cutting and raising the pair of mounting legs 11d and 11d in a double door shape.
To reinforce the strength of the mounting plate 11. Further, a protruding piece 11g is formed so as to project forward at a substantially central portion of the end surface 11c. A through hole 11h is formed near the outside of the narrow flat portion outside the opening. The through hole 11h and the through hole 12h of the insulator 12 described later are provided at the same distance from the support shaft 11b.

The insulator 12 has a semicircular shape on one side and a linear surface 12m on the other side, and is formed in a substantially D shape. A plurality of elastic slider pieces 12a made of phosphor bronze or the like are integrally formed on the insulator 12 by insert molding or the like using a molding resin material. Further, as shown in FIG. 2, a mounting hole 12b through which the support shaft 11b of the mounting plate 11 penetrates is formed at a substantially central portion of the insulator 12.
Are formed. Further, in the portion where the slider piece 12a is formed, angular openings 12c, 12d, and 12e for bending the slider piece 12a are formed. Further, inside the openings 12c, 12d, 12e, a slider piece 12a is disposed so as to be exposed upward.

Further, as shown in FIG. 3, the slider piece 12 is
The contact portion at the tip portion of a is formed so as to project from the projecting surface 12f provided around the mounting hole 12b.
Bending is performed using 2c, 12d, and 12e, and it is formed by bending upward at a predetermined angle. A cutout-shaped recess 12g is formed on the semicircular outer peripheral surface on one side of the insulator 12, and the stopper 11a of the mounting plate 11 is fitted therein. In addition, the surface of the insulator 12 has a concave surface 1 that is slightly larger than the outer diameter of the insulating substrate 13 described later.
2k is formed with a hollow from the surface of the insulator 12. Further, a through hole 12h is provided on the outer side of the concave surface 12k of the insulator 12 at the same distance from the support shaft 11b as the through hole 11h of the mounting plate 11.
2h coincides with the through hole 11h. Further, the through hole 12h is formed on the outer side of the metal plate 12n after forming the slider piece 12a. In addition, the slider piece 12 is formed on the linear surface 12m on the other side.
A terminal 12j extending from and connected to a is formed by bending downward. Then, the support shaft 11b and the projection 11a of the mounting plate 11 are fitted into the mounting hole 12b and the recessed portion 12g of the insulator 12 to prevent the insulator 12 from rotating.
Are positioned and mounted on the mounting plate 11. At this time, the positioning recess 12g into which the protrusion 11a is fitted is not limited to the notch shape, and may be a through hole into which the protrusion 11a fits without a gap.

Further, the openings 12c, 12d,
One side of 12e is closed by a flat surface portion 11j of the mounting plate 11 to prevent flux and dust from entering the inside of the rotary variable resistor of the present invention, and a pair of openings 11e. Since the lid 11e is closed by the flat portion 12n on the back surface of the insulator 12, dust and the like are prevented from entering through the pair of openings 11e and 11e of the mounting plate 11. Further, the substrate 13 is disc-shaped, and the detent portion 13a formed by cutting the other side in a linear shape is formed and is made of a material such as a phenol resin laminated plate. A resistor 13d having a circuit pattern is formed by printing or the like on the surface of the substrate 13 facing the slider piece 12a. In addition, the mounting hole 13b is provided at the center of the substrate 13.
Is outside the resistor 13d, and
The through hole 13 is formed in the portion where the resistor 13d is not formed.
c is provided at the same distance from the through hole 12h of the insulator 12 and the support shaft 11b.

The rotating body 14 is substantially disk-shaped and is made of synthetic resin or the like. The outer periphery 14a is formed with a mountain-shaped concavo-convex shape in order to prevent the operator's fingers or the like from slipping.
Further, a mounting hole 14b into which a support shaft 11b formed on the mounting plate 11 is fitted is provided in the center portion thereof, and a through hole 14c is provided in the through hole 13c of the substrate 13 on the outer side of the substrate mounting portion 14b described later. The same distance is provided from the support shaft 11b. As shown in FIG. 4, the back surface of the rotating body 14 has the same outer shape as that of the board 13, and the board mounting portion 14d is provided on the back surface of the board 1 so that the outer shape of the board 13 is fitted without play.
It is formed to be slightly deeper than the thickness dimension of No. 3, and forms the rotation stopping portion 14j. In addition, the protruding portion 14 into which the mounting hole 13b of the substrate 13 fits around the mounting hole 14b.
e is formed. Further, a rotation angle restriction groove 14f for determining a rotation angle of the rotating body 14 is provided between the substrate mounting portion 14d and the outer periphery 14a of the rotating body 14 with a predetermined width,
It is formed in an arc shape with depth and angle. The protrusion 11a of the mounting plate 11 is provided in the rotation angle regulation groove 14f.
The tip of the is inserted and acts as a stopper that regulates the rotation angle of the rotating body 14. In the rotating body 14 having such a configuration, the substrate 13 is handled by being combined with the substrate 13 by being stopped by the substrate mounting portion 14d, and the through hole 14c and the through hole 13c are aligned with each other. . The rotating body 14 to which the substrate 13 is attached is combined with the insulator 12.
The mounting plate 1 is inserted into the mounting hole 14b of the rotating body 14.
The first support shaft 11b is inserted and caulked, and the rotating body 14 is rotatably supported. In addition, at this time, the slider piece 12 a is the resistor 13 formed on the substrate 13.
are pressed into contact with the openings 12c and 12d of the insulator 12
・ It is pushed down to 12e. Further, the through hole 11h of the mounting plate and the through hole 12h of the insulator 12
And the through hole 13c of the substrate 13 and the through hole 14c of the rotating body 14 may overlap with the through hole 12h of the insulator 12 with the same distance from the spindle 11b. You can do it.
And each of these through holes 11h, 12h, 13
When c and 14c are overlapped, the tip of the protrusion 11a of the mounting plate 11 is inserted into a predetermined position of the rotation angle regulation groove 14f of the rotating body 14. The tip of the protrusion 11a is positioned at the one end side 14g of the rotation angle regulating groove 14f, and
May be located at the end of the rotation range. Also,
As shown in FIG. 5, up to the vicinity of the outer circumference 14a of the rotating body 14,
The protruding piece 11g of the mounting plate 11 extends, and the length of the extension is such that the tip of the protruding piece 11g is located inside the opening 17a of the cabinet 17.

Assembling and operation of the electric component of the present invention having the above-mentioned construction, that is, the rotary variable resistor will be described. As shown in FIG. 1, the positioning pin 15a attached to the assembly jig (not shown) Through hole 1 of the mounting plate 11
1h, insert the mounting plate 11 into the positioning pin 15b
The hole of the support shaft 11b is inserted and the mounting plate 11 is placed on an assembly jig (not shown). Next, the through hole 1 of the mounting plate 11
The positioning pin 15a protruding from 1h has a through hole 12h in the insulator 12, and the support shaft 11b has a mounting hole 12a.
When b is inserted, the recess 12 of the insulator 12 is inserted into the protrusion 11a.
g is positioned and fitted.

Next, the rotator 14 is attached to the positioning pin 15a protruding through the through hole 12h of the insulator 12.
The mounting plate 11 that simultaneously inserts the through hole 13c of the substrate 13 and the through hole 14c of the rotating body 14 which are fitted and mounted in the substrate mounting portion 14d of the same, and projects from the mounting hole 12b of the insulator 12 When the mounting hole 14b is inserted into the spindle 11b, the slider 12a faces and contacts the resistor 13d formed on the substrate 13. At this time, the tip of the projection 11a of the mounting plate 11 is inserted into the rotation angle restriction groove 14f formed on the back surface of the rotating body 14. The tip of the projection 11a in the fitted state is in contact with the one end side 14g of the rotation angle regulating groove 14f.

On such a mounting plate 11, an insulator 12,
When the substrate 13 and the rotating body 14 are stacked, the tip end of the support shaft 11b of the mounting plate 11 is in a state of protruding from the rotating hole 14b of the rotating body 14. At this time, the rotating body 14 to which the substrate 13 is fitted and attached is lifted upward by the elasticity of the slider piece 12a, and a gap is formed between the rotating body 14 and the insulator 12. There is. When the tip of the support shaft 11b is caulked with a jig (not shown) from such a state, the protruding portion 14e of the rotating body 14 becomes the insulator 12
Is pressed against the protruding surface 12f. Then, the rotating body 14
The gap between the insulating layer 12 and the insulator 12 disappears, and the substrate 13
Even if the plate thickness varies, a constant rotational actuating force can be obtained.

Next, when the rotary type variable resistor that has been assembled is taken out from the assembly jig (not shown), the through holes 11h, 12h, 13c and 14c of the respective parts are taken out.
The locating pin 15a that was fitted to and the other locating pin 15b come out from the through hole of the support shaft 11b, and the rotator 1
4 is rotatable within a range from one end side 14g to the other end side 14h of the rotation angle regulating groove 14f. like this,
Explaining one usage state of the rotary variable resistor of the present invention,
As shown in FIG. 5, in the rotary variable resistor of the present invention, the terminal 12j and the mounting leg 11d are attached to the circuit board 16 by soldering or the like. When a part of the outer circumference 14a of the rotating body 14 facing the outside of the cabinet 17 on the device side such as an audio device is rotated by a finger of a person or the like, the substrate 13 is rotated and the slider piece 12a of the insulator 12 is rotated. The resistance value changes by sliding on the top.

In the rotary variable resistor of the present invention having such a configuration, the through holes 11h, 12h, 13c, 1 of the mounting plate 11, the insulator 12, the substrate 13 and the rotary body 14 are formed.
Since 4c is provided at the same distance from the support shaft 11b, the through holes 11h and 12 are formed in the positioning pin 15a of the assembly jig.
When h, 13c, and 14c are inserted, and the support shaft 11b is inserted and stacked with the mounting hole 12b of the insulator 12 and the rotation hole 14b of the rotating body 14, the respective parts are positioned at predetermined positions. Assembled. Therefore, the rotating body 1
Since it is attached at a predetermined position of the rotation angle regulating groove 14f of No. 4, it is easy to perform the work of the next inspection process, and the one end side 14g
If the tip end of the protrusion 11a of the mounting plate 11 is positioned at the end and is immediately put into the assembling step of the set, the step of rotating the rotating body 14 to the stop end after the end of the assembling becomes unnecessary. And good positioning accuracy.

In the embodiment of the present invention, the rotation direction of the substrate 13 is determined by the rotation preventing portions 13a and 14j, but instead of this, the rotation body 14 is provided with a convex portion, and the substrate 13 is provided with You may provide the through-hole with which the said convex part fits.
Further, in the present invention, the resistor 13d is printed on the substrate 13,
Although it is attached to the rotating body 14, as another embodiment, the resistor 13d is formed on the substrate 1 by insert molding or the like.
You may attach to 3. Also, without using the substrate 13,
The resistor 13d may be directly formed on the rotating body 14 by a method such as printing or transfer.

As another embodiment, as shown in FIG. 7, a structure of a type that does not use the mounting plate 11 will be described. In this type of structure, the substrate 13 and the rotating body 14 are the same as those in the above-described embodiment, and therefore the description thereof will be omitted. Further, the external shape of the insulator 18 and the member attached to the insulator 18, that is, the slider piece 18
Since a, the terminal 18j, and the like are the same as those in the above-described embodiment, the description thereof will be omitted, and only the portions different from the above-described embodiment will be described. First, the insulator 18 has a protrusion 18g formed upward on a semicircular outer peripheral surface on one side,
The tip of the protrusion 18g is fitted into the rotation angle regulating groove of the rotating body 14 so as to function as a stopper for regulating the rotating angle of the rotating body 14. Further, the mounting leg 18n is insert-molded into the insulator 18 and is bent downward similarly to the terminal 18j. This mounting leg 18n is separated from the metal plate 18p forming the slider piece 18a,
It is attached to the insulator 18 by insert molding.

The support shaft 19 is manufactured by a header process, a cutting process, or the like, and is formed to have a length such that the insulator 18, the substrate 13, and the rotating body 14 are sandwiched and caulked. Then, in the assembly of this type of rotary variable resistor, the through hole of the support shaft 19 is inserted into the positioning pin 15b attached to an assembly jig (not shown). Next, the mounting hole 18b of the insulator 18 is inserted into the support shaft 19, and the through hole 18h of the insulator 18 is inserted into the positioning pin 15a. next,
The rotating body 14 having the substrate 13 attached to the insulator 18 is stacked and the tip of the support shaft 19 is crimped, and the assembly of the rotary variable resistor of this type is completed. Further, as a modification of this type, the support shaft 19 may be formed integrally with the protruding surface 12f around the mounting hole 18b of the insulator 18. Also,
Like the insulator 18, the rotor 14 may be integrally formed with the protrusion 14e around the mounting hole 14b. Further, although the rotary variable resistor is described as an example in the embodiment of the present invention, it is also possible to apply the rotary variable resistor to a rotary encoder in which a circuit pattern including a resistor 13d or a conductor pattern is formed.

[0021]

As described above, according to the electric component of the present invention, since the through hole is provided in the insulator and the rotating body at the same distance from the support shaft, the insulating hole is utilized to make the insulation. Since the body and the rotating body can be positioned and assembled, the insulator and the rotating body can be positioned and assembled at a predetermined position without providing a special positioning member. Since the step of rotating the shaft to the stop end is unnecessary, it is possible to provide an electric component having good assembling property and good positioning accuracy.

Further, since the substrate combined with the rotating body is provided with through holes at the same distance from the support shaft as the through holes of the rotating body and the insulator, the substrate is utilized by utilizing this through hole. Assembling the slider piece of the circuit pattern and the insulator formed on the substrate by positioning the resistor body and the slider piece of the substrate at a predetermined position without providing a special positioning member product. As a result, it is possible to provide an electric component with high positioning accuracy for the resistor of the substrate and the slider piece.

Further, since the through hole of the mounting plate, the through hole of the insulator, the through hole of the substrate and the through hole of the rotating body are provided at the same distance from the spindle, the mounting plate, the insulator and the substrate are separated from each other. Since the rotating body can be positioned and assembled at a predetermined position, it is possible to provide an electrical component with good positioning accuracy for the mounting plate and each component.

Further, since the through holes are provided on the outer sides of the mounting plate, the insulator, the substrate, and the rotating body, respectively, the distance between the support shaft and the through holes can be widened. The positioning accuracy can be further improved. Further, since the through hole of the insulator is provided on the outer side of the metal plate, the through hole of the substrate is provided on the outer side of the circuit pattern, and the through hole of the rotating body is provided on the outer side of the board mounting portion, the through holes of the above-mentioned components are not provided. Since holes can be easily subjected to brace processing or molding processing, it is possible to provide each of the above-mentioned parts with good workability and accuracy, and since the play space of each part can be used as a through hole, a special positioning member can be used. Since it is not necessary to provide it, the size can be reduced.

Further, since the through hole of the insulator, the through hole of the substrate, and the through hole of the rotating body, which are formed at the same distance from the support shaft, are sequentially inserted into the positioning pins of the assembly jig to be stacked and assembled, the insulator Since the rotating body can be positioned and assembled at a predetermined position, the step of rotating the rotating body to the stop end is not necessary after the assembly is completed. Can be provided.

Further, the mounting holes for the insulator, the substrate and the rotating body are inserted into the support shaft provided on the mounting plate, and the positioning pin of the assembly jig is insulated from the mounting plate formed at the same distance from the support shaft. Since the through holes of the body, the board, and the rotating body are inserted, and they are sequentially stacked and assembled on the mounting plate, it is possible to provide a method of assembling an electric component having a good assembling property and a high positioning accuracy.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a rotary variable resistor according to the present invention.

FIG. 2 is a plan view of a slider holder of the rotary variable resistor according to the present invention.

FIG. 3 is a sectional view of an essential part of a slider holder of a rotary variable resistor according to the present invention.

FIG. 4 is a bottom view of the rotating body of the rotary variable resistor according to the present invention.

FIG. 5 is a schematic view illustrating a usage state of the rotary variable resistor of the present invention.

FIG. 6 is a sectional view of an essential part of a rotary variable resistor according to the present invention.

FIG. 7 is an exploded perspective view of another embodiment of the present invention.

FIG. 8 is a sectional view of a main part of a conventional rotary variable resistor.

FIG. 9 is a bottom view of a knob of a conventional rotary variable resistor.

FIG. 10 is a plan view of a resistance substrate of a conventional rotary variable resistor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 knob 1a circular through hole 1c protrusion 1d groove 1e stopper part 2 resistance substrate 3 base part 3a stepped column 3b protrusion 4 spacer 5 elastic contact body 5a, 5b, 5c contact part 11 The mounting plate of the present invention. 11a Protrusion 11b Spindle 11d Mounting leg 11e Opening 11g Projecting piece 11h Through hole 12 Insulator 12a of this invention 12a Slider piece 12b Mounting hole 12c ・ 12d ・ 12e Opening 12f Projecting surface 12g Recess 12h Through hole 12j Terminal 13 of the present invention Substrate 13a Detent 13b Mounting hole 13c Through hole 14 Rotating body 14a Outer periphery 14b Mounting hole 14c Through hole 14f Rotation angle regulation groove 15 Positioning pin 16 Circuit board 17 Cabinet 17a Opening 18 Insulator of other embodiments 18b Mounting hole 19 Spindle of another embodiment

Claims (7)

[Claims] 1. An insulating body having a through hole, a rotating body having a through hole, and a support shaft for combining the rotating body with the insulating body, wherein the through hole of the insulating body and the through hole of the rotating body are provided. An electric component, which is provided at an equal distance from the support shaft. 2. The rotating body having a combination of substrates and the substrate having a through hole, wherein the through hole of the substrate, the through hole of the insulator and the through hole of the rotating body are equal to each other from the spindle. The electrical component according to claim 1, wherein the electrical component is provided at a distance. 3. An insulating body in which a mounting plate is combined, and a mounting plate having a support shaft and a through hole, the through hole of the mounting plate, the through hole of the insulator, the through hole of the substrate, and the through hole. The electrical component according to claim 1 or 2, wherein the through hole of the rotating body is provided at an equal distance from the support shaft. 4. The through hole is provided at the outer side of each of the mounting plate, the insulator, the substrate, and the rotating body, and the through holes are provided.
The electrical components described. 5. The mounting plate having a flat portion, the insulator having a slider piece made of a metal plate, the substrate having a circuit pattern, and the rotating body having a substrate mounting portion, The through hole of the mounting plate is on the outer side of the flat portion,
The through hole of the insulator is closer to the outside than the metal plate, and the through hole of the substrate is closer to the outer side than the circuit pattern,
5. The electric component according to claim 4, wherein the through hole of the rotating body is provided near the outside of the board mounting portion. 6. The through hole of the insulator, the through hole of the substrate, and the through hole of the rotating body, which are formed at the same distance from the support shaft, are sequentially inserted into the positioning pins of the assembly jig, and the substrate is placed on the insulator. A method of assembling electric parts, characterized by stacking and assembling rotating bodies in sequence. 7. A mounting hole formed in an insulator, a substrate and a rotating body is inserted into a spindle provided on a mounting plate, and a positioning pin of an assembly jig is formed at an equal distance from the spindle. Inserting the through holes of the mounting plate, the through holes of the insulator, the through holes of the substrate, and the through holes of the rotating body in order, and stacking the insulating body, the substrate, and the rotating body on the mounting plate in sequence to assemble. A method of assembling a characteristic electric component.