JP3293298B2 - Variable electronic components - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a variable electronic component mainly used for circuit adjustment of electronic equipment.

[0002]

2. Description of the Related Art FIG.
This will be described with reference to FIGS. FIG. 15 is a side sectional view, FIG. 16 (a) is a top view of a state in which a middle terminal and an outer terminal are connected to a substrate which is a main part, and are integrated with a case by insert molding, and FIG. FIG. Figure 1
5, in FIGS. 16A and 16B, reference numeral 11 denotes a substrate made of an insulating material, and a horseshoe-shaped resistor film 12 is formed on one main surface of the substrate 11. External terminals 14 are connected to both ends of the resistor film 12 by solder 16, respectively. An electrode 13 is formed at the center so as to be surrounded by the resistor film 12, and the electrode 13 is pulled out outward. While the resistor film 12a is overcoated on the way, the middle terminal 15 is
6. In this state, the substrate 11 is integrated with the case 17 made of a synthetic resin material by insert molding. The upper surface of the case 17 and one main surface of the substrate 11 are formed on the same surface, a fitting step is formed around the upper surface of the case 17, and insert molding is performed at the center of the lower surface of the case 17. A hole for holding the substrate at the time is formed.

A cover 18 made of a synthetic resin material has a through hole 18a formed on one side and a recess 18c formed concentrically with the through hole 18a inside, and an opening 18 formed on the other side.
b is formed, and a fitting step is formed around the opening 18b. Reference numeral 19 denotes a ring-shaped ring body made of rubber, 20 denotes a shaft made of a synthetic resin material, an operation groove 20a is formed at one end, a brim portion 20b is formed near the center, and a spring is provided at the other end. And a slider 21 made of a conductive material.

Here, the ring body 19 is inserted from the opening 18b side of the cover 18 and fitted into the recess 18c.
After that, the shaft 20 to which the slider 21 is attached is inserted from the opening 18b side of the cover 18, and the cover 1
One end of the shaft 20 passes through the through hole 18 a of the shaft 8, and the flange portion 20 b of the shaft 20 is in contact with the ring body 19.

Next, the case 17 integrally formed with the substrate 11 to which the outer terminals 14 and the middle terminals 15 are connected so as to seal the opening 18b of the cover 18.
The case 17 and the cover 18 are assembled with an adhesive or the like while the fitting stepped portion is fitted with the fitting stepped portion of the cover 18 .

At this time, the slider 21 attached to the shaft 20 is in pressure contact with the resistor film 12 and the electrode 13 formed on one main surface of the substrate 11.

Next, the operation of the above variable resistor will be described. In the above embodiment, a jig such as a screwdriver is fitted into the operation groove 20a of the shaft 20, and the shaft 20 is rotated. A desired resistance value is obtained by simultaneously sliding the slider 21 on the resistor film 12 and the electrode 13 with the slider 21 rotating together with the shaft 20. Also,
The resistor film 12, the electrode 13, and the slider 21 are in a dustproof state by the substrate 11, the case 17, the cover 18, and the shaft 20.

[0008]

The object of the invention is to be Solved However, the above-mentioned slave
In the conventional configuration, the external terminal 1 as a lead-out terminal to the outside is used.
4 and the case 17 are integrated by insert molding, and the cover 1
Combining the 8 etc., the case 17 and the cover 18 are adhesively bonded, also when combined, the outer terminals 1
4. Since the case 17 and the cover 18 are separate components, the steps of alignment, positioning, soldering, combination, bonding with an adhesive, and the like are complicated, equipment costs are increased, and productivity is improved. There was a problem that it was difficult to plan.

The present invention is to solve such a conventional problem. Two cases and the like and the lead-out terminal are already fixed at the time of combination. It is not necessary, it is easy to assemble, and
It is an object to provide an economical variable electronic component.

[0010]

Means for Solving the Problems The above conventional problems are solved.
The present invention is in order, the lead terminals, one end portion and the fixed upper case of the lead terminals, and a lower case fixed to the other end portion of the lead terminals, and the board, sliding against the substrate comprising a slide disposed to the on the substrate
The upper case is surrounded by the case and the lower case.
Of the drawer terminal connecting the lower case and the lower case
By bending, the upper case and the lower case
These are combined to fix the substrate.

[0011]

According to the configuration of the present invention described above, the upper case and the lower case are already connected by the lead-out terminal at the time of combination.
Therefore, alignment, positioning, etc. are simplified, and the upper case
Bend the drawer terminal connecting the lower case and
Thus, the upper case and the lower case can be easily combined, and an easy-to-assemble and economical variable electronic component can be formed.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A variable electronic component according to the present invention will be described with reference to FIGS. FIG. 1 is a top view showing an embodiment in which the variable electronic component of the present invention is used for a variable resistor, and FIG.
FIG. 3 is a cross-sectional view in which A ′ and BB ′ cross sections are synthesized by XX ′.
Is a front view. FIG. 4 is a top view of a substrate as the main part. FIG. 5A is a top view of an operation body which is the main part, and FIG.
6B is a side view of the same, FIG. 5C is a bottom view of the same, and FIG.
FIG. 6A is a top view of a sliding body as the main part, and FIG. 6B is a side view of the same. FIG. 7 shows that the lead terminal, which is the main part,
FIG. 8 is a cross-sectional view taken along the line CC ′ of FIG. 7 showing a connection state (a hoop-shaped lead terminal). FIG. 9 is a top view showing a state in which a hoop-shaped lead terminal and an upper case and a lower case are integrally formed. FIG. 10A is another embodiment of a portion E in FIG. 9, and FIG. FIG. 11A is an enlarged sectional view taken along line FF ′ of FIG. 9, FIG. 11 is a sectional view taken along line DD ′ of FIG. 9, and FIG. 12 is a bottom view of FIG. FIG. 13 is a sectional view showing a state where the operating body and the sliding body of FIG. 2 are assembled to FIG. FIG. 14 is a side view showing a state before the upper case and the lower case of FIG. 2 are assembled.

[0013] Oite in FIG. 1 to FIG. 14, 1 denotes a central terminal plate having a central hole 1a made of a conductive material, flared engagement portion 1 to the middle of the front end portion 1e which extends from the central
f are formed, and holding claws 1g extending from two places on both sides in the same direction as the extending direction of the distal end portion 1e and bent in an L-shape in the direction of the other side 1c are formed to face each other in pairs, A connecting hole 1h is formed in the vicinity of the base where the tip 1e and the holding claw 1g extend, and the stopper reinforcing portion 1d is bent in the direction of the one side 1b in a direction opposite to the tip 1e. The tip 1e is formed continuously with the connecting member 10 in the initial stage of assembly. Pilot holes 10a are formed at a constant pitch
Are formed.

Reference numeral 2 denotes a lead-out terminal made of an elastic metal material or the like. The lead-out terminal 2 is formed at two places on the left and right sides of the central terminal plate 1 in the direction of the stopper reinforcing portion 1d at an arbitrary interval from the central terminal plate 1. On one outer side of one end 2a close to the terminal plate 1, an L-bend 2e is formed by being bent at a substantially right angle in the direction of one side 2b, and on each inner side, a stopper of the central terminal plate 1 is formed. A shear cutting portion 2d is formed by cutting the stopper reinforcing portion 1d from the state where the stopper reinforcing portion 1d is connected to the lead-out terminal 2 before the reinforcing portion 1d is formed in a bent shape. An intermediate hole 2i is formed in the intermediate portion 2g that is formed, and the central portion of the intermediate portion 2g is cut off by shearing and has a notch 2k at a tip reaching the intermediate hole 2i, or one side 2b. Shaped, rectangular bending and contact portion 2h the other side 2 having an uneven portion 2l by processing such as coining
The other end 2j is formed by projecting and bending in an S-shape in the direction of c, and is formed to be bent in a U-shape or the like in the direction of the other side 2c. The outer side near the other end 2j is the connecting member 10.
Are connected to the lead terminal connecting portion 10b.

Next, the central terminal plate 1 and the lead terminal 2 formed in a hoop shape are connected to PPS, PPA, LC
The upper case 3 and the lower case 4 made of an insulating material such as P and PBT are integrally formed by insert molding. The upper case 3 has a stepped inner peripheral wall 3a having an inner peripheral surface concentric with the central hole 1a on one side 1b of the central terminal plate 1.
And the inner peripheral wall 3 on the side of the central terminal plate 1.
a, an inner convex portion 3b that protrudes inward of a and regulates the rotational position of the operating body 5, and an opening 3c is formed on the other side 1c;
A board pressing surface 3d is formed around the tip of the opening 3c, a contact space 3f is formed near the center of one end 2a of the other side 2c of the lead terminal 2, and the other end of the central terminal plate 1 is formed. A trapezoidal fitting wall 3e inclined at a certain angle is formed on the outer wall on the side 1c side.

The lower case 4 has the other end 2j of the lead-out terminal 2 inserted therein, and a recessed introduction wall 4e inclined at a predetermined angle is formed on the other side 2c side of the lead-out terminal 2; A recess 4f having a depth corresponding to the material thickness of the lead-out terminal 2 is formed on the upper surface closest to the intermediate portion 2g, a substrate receiving surface 4a is formed on the concave lower end surface, and the lead-out is formed on the substrate receiving surface 4a. The other end 2 of the other end 2j of the terminal 2
c is formed so that one side of the other end 2j of the extraction terminal 2 is exposed on the exposed bottom surface, and the intermediate portion 2 of the extraction terminal 2 is formed.
A holding projection 4b is formed on the side surface opposite to the side where g is located, and a groove shape having a chamfer so that it can be easily introduced in the vertical direction at the center of the holding projection 4b and diverging from the middle toward the bottom. An engaging portion 4c is formed in the shape of
A bottom step 4d is formed near the bottom surface of b.

The operation body 5 is made of a metal material such as aluminum, copper, brass or the like or a polymer material such as PPS, PBT, PPA, LCP, etc., and has a large diameter portion having an operation groove 5b formed on one operation side. 5a, the other end has a small-diameter portion 5f inserted through the central hole 1a of the central terminal plate 1, and has a stepped central portion 5c near the center. Projecting from a part of the central portion 5c in the outer peripheral direction of the diameter,
It has an outer convex portion 5d whose radial dimension is equal to or smaller than the radial dimension of the large-diameter portion 5a, and the lower surface of the operation groove 5b corresponding to the outer convex portion 5d is inclined so that the position can be recognized. A portion 5e is formed.

The formation of the inclined portion 5e prevents a sudden change in the thickness near the outer convex portion 5d and the operation groove 5b, thereby facilitating the processing. The central terminal plate 1
From the inner peripheral wall 3a side of the upper case 3 formed integrally with the upper case 3, the small diameter portion of the operating body 5 is located at a position where the outer convex portion 5d of the operating body 5 does not collide with the inner convex portion 3b of the upper case 3. 5f
Is inserted into the central hole 1a of the central terminal plate 1, and the operating body 5 is positioned so that the end face of the central portion 5c on the small diameter portion 5f side of the operating body 5 abuts on one side 1b of the central terminal plate 1. The central portion 5c and the large diameter portion 5a are disposed in the inner peripheral wall 3a. At this time, the gap between the large-diameter portion 5a and the inner peripheral wall 3a is formed so that it can be inserted and is as small as possible.

Reference numeral 6 denotes a sliding member made of a conductive material having a spring property.
a is formed, the one surface side 6b is flat, and the other surface side 6c is formed with a contact 6d. Contact 6d of the sliding body 6
The engagement hole 6a of the sliding body 6 is engaged with the small-diameter portion 5f of the operating body 5 so that the sliding body 6 is on the inclined portion 5e side of the operating body 5, so that the sliding body 6 has a small diameter. 5g, and the end of the small diameter portion 5f is swaged to form a swaged portion 5g.
The sliding body 6 is attached so that one surface side 6b of the sliding body 6 contacts the other side 1c of the central terminal plate 1 while the sliding body 6 rotates together with the operating body 5. Further, the contact portion 2h of the lead terminal 2 bent in an S shape is shown in FIG.
As shown in FIG. 3, the upper case 3 is folded back and bent to the contact space 3f (from the outside of the upper case 3 to the direction of the inside arrow), and the tip 1e of the central terminal plate 1 is cut off from the connecting member 10 and the center is removed. The terminal board 1 is bent in the direction of the other side 1c.

Reference numeral 7 denotes a substrate made of a film-shaped insulating material such as polyimide or polyetherimide, or a plate-shaped insulating material such as glass epoxy or bake, or a ceramic or the like. The center hole 7b and the notch 7c are used for positioning during printing and assembly. Formed
Are, also on a main surface 7a and the resistor film 8 horseshoe is formed around the center hole 7b, further the resistance <br/> one end portion 8a and the substrate 7 of the antibody coating 8 An electrode 9 is formed between the main surface 7a and the upper surface of the end 8a.
You.

Here, the substrate 7 is inserted from the introduction wall 4e side of the lower case 4 so that the one main surface 7a side of the substrate 7 faces upward, and is disposed on the substrate receiving surface 4a of the lower case 4. . At this time, in order to temporarily fix the substrate 7, the outer edge of the substrate 7 and the lower end of the introduction wall 4 e of the lower case 4 are press-fitted, or a part of the introduction wall 4 e or one of the substrate receiving surfaces 4 a. The portion or the like may be crushed toward the substrate 7 side, or may be temporarily temporarily fixed with an adhesive or the like.

Next, the bent contact portion 2h of the lead terminal 2 is located in the concave portion 4f of the lower case 4, and the fitting wall 3e of the upper case 3 is fitted to the introduction wall 4e of the lower case 4. 2g of the middle part of the lead-out terminal 2
By bending the vicinity of the upper case 3 and the lower case 4 respectively, the central terminal plate 1, the operating body 5, the sliding body 6
And the upper case 3 integrated with the lower case 4 on which the substrate 7 is disposed, and the engaging portion 1f of the central terminal plate 1 is engaged with the engaging portion 4c of the lower case 4; The tip 1e of the terminal plate 1 is bent toward the bottom step 4d of the lower case 4, and the two holding claws 1 of the central terminal plate 1 are further bent.
g is bent and crimped so as to sandwich the holding projection 4b of the lower case 4 from both sides, thereby forming a holding claw 1g 'after crimping, and the upper case 3 and the lower case 4 are fixed. At this time, the holding projection 4 of the lower case 4
b is moved toward the engaging portion 1f of the central terminal plate 1,
It will be more firmly fixed. Before and after the combination, grease, a surfactant, an adhesive, and the like may be provided between the upper case 3 and the lower case 4.

Here, the substrate holding surface 3d of the upper case 3
And the one principal surface 7a side of the substrate 7 abuts, and the contact 6d of the sliding body 6 presses the resistor film 8 of the substrate 7;
The contact portion 2h of the lead terminal 2 presses the end 8a of the resistor film 8 or the electrode 9 of the substrate 7 into pressure contact with the lower case 4 near the end 8a of the resistor film 8 of the substrate 7.
And the other end 2j of the lead terminal 2 exposed from the substrate receiving surface 4a. Next, the lead-out terminal 2 is connected to the lead-out terminal connecting portion 10 b of the connecting member 10.
Disconnected from

Next, the operation of the variable resistor of the above embodiment will be described.

First, a jig such as a screwdriver is attached to the operating body 5.
By rotating the operating body 5 by fitting it into the operating groove 5b, the contact 6d of the sliding body 6 co- rotating with the operating body 5 slides on the resistor film 8 so as to be desired. Is obtained, and the inner convex portion 3b of the upper case 3 and the outer convex portion 5d of the operating body 5 come into contact with each other, whereby the rotation position is regulated.

As described above, according to the above embodiment, the extraction terminal 2 having the contact portion 2h having elasticity, the upper case 3 fixed to one end 2a of the extraction terminal 2, and the extraction terminal 2 provided the other end portion 2j and the lower case 4 fixed, the resistor film 8 or the substrate 7 on which the electrode 9 is formed, and a sliding body 6 which is arranged to slide with respect to the substrate 7 of
And the end 8a of the resistor film 8 or the electrode 9
Since the contact portions 2h extending from the upper case 3 are in pressure contact with each other, the substrate 7 is sandwiched and fixed so that the substrate 7 is surrounded by the upper case 3 and the lower case 4. The soldering between the lead-out terminal 2 and the substrate 7 becomes unnecessary, and the substrate 7 is made of polyimide.
The substrate 7 can be easily used, and the substrate 7 need not be insert-molded with the lower case 4 or the like. In this case, there is no crack, crack or eccentricity of the substrate 7 at the same time, the damage of the mold is reduced, and the occurrence of short shot failure which is likely to occur when the substrate 7 is insert-molded can be prevented.
Since only the drawer terminal 2 and the central terminal plate 1 are insert-molded, molding is facilitated.

Further, when combined, already for the lower case 4 and the upper case 3 are connected by the lead terminals 2, aligned, simplifies the positioning or the like and also, the lower case and the upper case 3, The upper case 3 and the lower case 4 are combined by bending the vicinity of the upper case 3 and the lower case 4 of the intermediate portion 2g of the drawer terminal 2 connecting the upper case 3 and the lower case 4, respectively. The intermediate portion 2g side of the lead terminal 2 is fixed without using an adhesive, and the other side is engaged with the engaging portion 1f of the central terminal plate 1 by the lower case 4 as in the above embodiment. The upper case 3 and the lower case 4 are fixed by engaging with the mating portion 4c and bending the holding claws 1g of the central terminal plate 1 toward the holding protrusions 4b of the lower case 4, respectively. Sa Order, one in which adhesive is not required.

[0028] And also, an intermediate portion 2g of the lead terminals 2
Are external terminals as they are when mounted on a printed circuit board or the like. Further, the periphery of the contact 6d of the sliding member 6 and the resistor film 8 is surrounded by the upper case 3, the substrate 7 and the lower case 4. can dustproof structure by are furthermore the lead terminals 2 and the central terminal plates 1
Is made continuous by the connecting member 10 , the assembling can be easily performed continuously, and the effect that the mass productivity can be improved can be obtained.

In the above embodiment, the upper case 3
That the lower case 4 are connected by an intermediate portion 2g of the lead terminals 2 and
Has been described , but the extraction terminal 2 is connected to the lower case 4
The lower case 4 is configured as a single unit without insert molding
Alternatively, the substrate 7 may be
It may be in contact with the upper case 3 and joined with an adhesive or the like,
Further, the central terminal plate 1 is replaced with the lead terminal 2.
The upper case 3 and configured to lower case 4 is connected, and by bending the central portion of the terminal plate 1 connected, the lower case 4 and the upper case 3 are combined with the substrate 7 May be fixed
No.

Further, song fold are protruded part of the intermediate portion 2g of the lead terminal 2, which is extended from the upper case 3
It is formed by a gel, and the upper case 3 side folded back bent contact portion 2h is formed on the substrate 7
So as to press the end portion 8a or the electrode 9 of the resistor film 8, and disposing the substrate 7 by contact with the upper case 3
And if, the soldering of the lead terminal 2 and the substrate 7 or the like becomes unnecessary, and since the substrate 7 it is not necessary to insert molding, when the substrate 7 is formed of a ceramic or the like, insert molding In this case, there is no crack, crack or eccentricity of the substrate 7, and damage to the mold is reduced.

In the above embodiment, the center terminal plate 1 is insert-molded into the upper case 3.
In the above description , the operation body 5 and the sliding body 6 attached to the central terminal plate 1 may be fixed to the upper case 3 . In the above embodiment,
The engaging portion 1f of the central terminal plate 1 is engaged with the engaging portion 4c of the lower case 4 , and the holding claw 1g of the central terminal plate 1 is held.
To the holding projection 4b of the lower case 4.
Has been described in connection with what was, a portion of the central terminal plate 1 is formed <br/> integrally with the lower case 4, and the central terminal plate 1
The nail holding 1g is projected from the lower case 4 side, this
The <br/> caulking Rukoto the holding claws 1g of holding projection formed on the upper case 3, the lower case 4 and the upper case 3
May be fixed.

Further, a holding claw is formed on the lead terminal 2.
And also the holding claws may be crimped to the holding projection formed on the upper case 3 and the lower case 4
It is. Further, the holding pawl 1g of the central pin plate 1 to the holding projection which is formed on the second surface side of the lower case 4, or the form of the holding claws in the pull-out terminal 2, before the holding claw
A holding projection formed on the second surface side of the serial lower case 4 or the upper case 3, or the respectively form a holding claw in the middle terminal plate 1 and the lead terminals 2, nail these retention
At least 2 of the lower case 4 or the upper case 3
The upper case 3 and the lower case 4 may be fixed by caulking on the surface side, and the engaging portion 1 f of the central terminal plate 1 is engaged with the engaging portion formed on the upper case 3. it may be engaged, and further, the engagement portion formed in the lead terminal 2, in which the engagement portion may be engaged with the engaging portion formed on the lower case 4 or the upper case 3 is there.

In the above embodiment, the operation body 5 and the slide body 6 are rotated with respect to the center hole 1a of the center terminal plate 1 .
Forming a central hole 1a of the central terminal plate 1 in a long hole shape ;
More may be the operating body 5 and the sliding body 6 so as to move linearly, also, in the above embodiment, before
The operating body 5 is attached to the central terminal plate 1 .
Although the above- described configuration has been described, an attachment portion is formed on the slide body 6 without the operation body 5, and the attachment portion is movable to a central hole 1 a of the central terminal plate 1 by caulking or the like. Taking
The operation body 5 with the sliding body 6 attached thereto may be further provided between the central terminal plate 1 or the upper case 3 and the substrate 7, and the central terminal plate The operating body 5 protruding from the central hole 1a or from the central hole 1a may be operated . Further, the substrate 7 is not insert-molded in the lower case 4.
Although it is a single unit, it may be integrally formed by insert molding , and when forming the upper case 3 and the lower case 4, they are connected by a passage gate and resin flows in from a gate on one case side. Let the passing gate
By pushing part of the part with the movable pin in the mold
Or to cause, after forming integrally, may be cut the passage Gate.

In the above embodiment, the variable resistor is described as an example. However, it goes without saying that the present invention can be similarly applied to a variable capacitor and a switch.

[0035]

As is clear from the above embodiment , the present invention
Includes a lead terminal, one end portion and the fixed upper case of the lead terminals, and a lower case fixed to the other end portion of the lead terminals, and the substrate, disposed so as to slide relative to the substrate comprising a sliding body which is, the substrate to be surrounded by said lower case and said upper case, by bending the portion of the lead terminal connected to the lower case and the upper case, the upper The case and the lower case are combined
The board is fixed, so this board
With the film-like can also be readily used as such polyimide, for the substrate it is not necessary to insert molding with the lower case or the like, wherein the substrate is a substrate with the insert molding when they are formed of ceramic or the like Cracks and clubs
No short circuit and eccentricity occur , and it is possible to prevent the occurrence of short shot failure which is likely to occur when the substrate is subjected to insert molding , and to select a molding condition such as an injection pressure.
In addition, the upper case and the lower case can be easily formed by insert-molding only the lead terminals and the like.

Also, at the time of combination, since the upper case and the lower case are already connected by the lead terminals, alignment, positioning, etc. are simplified, and at least the side connected by the lead terminals is bonded. It will be fixed without using an agent, and the part of the lead terminal connecting the upper case and the lower case can be used as an external terminal as it is when mounted on a printed circuit board or the like, Moreover, the periphery of the sliding body and the substrate is surrounded by the upper case and the lower case, thereby providing a dustproof structure.
Therefore , an easy-to-assemble and economical variable electronic component can be provided .

It should be noted, extending has been contact portion a part is protruded to be formed by bending bent by folding the case side of the intermediate portion of the lead terminal has a substrate from the case
The substrate was disposed in contact with the case so as to be in pressure contact with the end of the resistor film formed on the electrode or the electrode .
In such a case, soldering between the lead terminal and the substrate or the like becomes unnecessary.

A notch is provided at the tip of the contact portion of the lead terminal.
If formed, the tip of the contact portion there are a plurality of
State, or the contact portion is pulled out of the contact portion of the extraction terminal in the direction in which the contact portion is pressed against the end portion of the resistor film or the electrode .
When formed at the tip, a convex portion is formed on the pressure contact surface side of the contact portion.
Since the state in which there is made to pressure contact by <br/> Ri stably to the end portion or the electrode of the resistor film formed on the substrate and the contact portion of the lead terminal.

[Brief description of the drawings]

FIG. 1 is a top view of a variable resistor as one embodiment of a variable electronic component according to the present invention.

FIG. 2 is a cross-sectional view obtained by synthesizing AA ′ and BB ′ cross-sections of FIG. 1 with XX ′;

FIG. 3 is a front view of the same.

FIG. 4 is a top view of a substrate which is a main part of the same.

FIG. 5A is a top view of the operation body as the main part, FIG. 5B is a side view thereof, and FIG.

FIG. 6 (a) is a top view of a sliding body which is a main part of the same, and (b) is a side view thereof.

FIG. 7 is a top view showing that the lead terminal, which is the main part, is connected to the connecting member (hoop-shaped lead terminal).

FIG. 8 is a sectional view taken along the line CC ′ of FIG. 7;

9 is a top view showing a state in which the hoop-shaped lead terminal of FIG. 7 and the upper case and the lower case of FIG. 2 are integrally formed.

10A is a partial top view showing another embodiment of the portion E in FIG. 9; FIG. 10B is an enlarged cross-sectional view taken along the line FF ′ in FIG.

FIG. 11 is a sectional view taken along line DD ′ of FIG. 9;

FIG. 12 is a bottom view of FIG. 9;

13 is a sectional view showing a state where the operating body and the sliding body of FIG. 2 are assembled to the state of FIG. 11;

14 is a side view showing a state before assembling the upper case and the lower case in FIG. 2;

FIG. 15 is a side sectional view of a variable resistor which is a conventional variable electronic component.

FIG. 16 (a) is a top view showing a state in which a middle terminal and an outer terminal are connected to a substrate which is a main part of the same and integrated with a case by insert molding.

[Explanation of symbols]

 2 Outgoing terminal 2a One end 2g Intermediate part 2h Contact 2k Notch 2l Uneven part 3 Upper case 4 Lower case 6 Sliding body 7 Substrate 8 Resistor film 9 Electrode

Claims (3)

(57) [Claims] A drawer terminal, an upper case fixed to one end of the drawer terminal, a lower case fixed to the other end of the drawer terminal, a board, and a sliding member with respect to the board. comprises a sliding element arranged, said substrate so as to surround between the lower case and the upper case, by bending the portion of the lead terminal connected to the lower case and the upper case The upper case and the lower case are combined
A variable electronic component, wherein the electronic component is fixed to the substrate . 2. A lead terminal, a case fixed to one end of the lead terminal, a substrate on which at least a resistor film or an electrode is formed, and a slide disposed to slide on the substrate. comprising a body and a contact portion that is formed bent by folding the case side by bending are protruded part of the intermediate portion of the lead terminal which is extended from the casing, the contact portion is the as it pressed against the end or the electrode of the resistor film formed on the substrate, the base
A variable electronic component , wherein a plate is disposed in contact with the case. 3. The terminal according to claim 2, wherein a notch is formed at an end of the contact portion of the lead terminal, or an uneven portion is formed in a direction in which the contact portion comes into pressure contact with an end of the resistor film or an electrode. Variable electronic components.