JP3293296B2 - 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 variable resistor will be described. A jig such as a screwdriver is mounted on the operation groove 20 of the shaft 20.
a, by rotating the shaft 20 so that the slider 21 co-rotating with the shaft 20 slides on the resistor film 12 and the electrode 13 at the same time. The resistance value is obtained. Further, the resistor film 12,
The electrode 13 and the slider 21 are connected to the substrate 11, the case 1
7, the cover 18 and the shaft 20 are in a dustproof state.

[0008]

However, in the above-described conventional configuration, the outer terminal 14 and the middle terminal 15 are connected to the substrate 11 by the solder 16 .
Because, the higher the equipment cost of the soldering process, and when to use a film form polyimide or the like as the substrate 11 is soldered terminal had a problem that it is difficult becomes expensive.

Further, the outer terminal 14 and the middle terminal 1
In the case where the board 11 to which the solder 5 is soldered is insert-molded, the outer terminal 14, the middle terminal 1 and the
In addition, there is also a problem that defects such as deformation and crushing failure of 5, and when the substrate 11 is formed of ceramic or the like are likely to cause cracks, cracks, and breakage of a molding die, and it is difficult to improve productivity. Was.

The present invention solves such a conventional problem, and does not require soldering of a lead terminal to a board or the like.
A film-like substrate such as polyimide can be easily used as the substrate, and cracks, cracks and eccentricity of the substrate may occur.
Can be avoided and the dust-proof structure makes it easy to assemble.
It is an object of the present invention to provide an economical and economical variable electronic component.

[0011]

Means for Solving the Problems The above conventional problems are solved.
The present invention in order includes a lead terminal contact portion is formed with resilient, and upper case this lead terminal is fixed,
And the lower case, comprises at least a substrate resistor film or electrodes are formed, and a slide arranged to slide with respect to the substrate, wherein the sliding body is in the upper case substrate
Disposed in the opening formed on the side, and of the lead-out terminal.
The contact portion extends from the upper case side to
It is arranged in the contact space on the substrate side, and
The contact point of the element is connected to the end of the resistor film formed on the substrate.
Or the upper case and the lower case so as to press against the electrodes.
And the substrate is fixed by sandwiching the substrate .

[0012]

According to the structure of the present invention described above, it has elasticity.
Since the contact portions of the lead terminals are disposed in pressure-contact with the end or the electrode of the resistor film formed on the substrate, the pull-out
It is not necessary to solder the terminal and the board, and the board is sandwiched and fixed between the upper case and the lower case.
Because the polyimide or the like can also be used easily as a film-like as the substrate, also the substrate since it is not insert molding, also avoids the occurrence of breakage or cracks and eccentricity of the substrate due to the insert molding With
Occurs when insert molding the substrate, etc.
Easy short shot failure can be prevented,
Also, it is possible to form an easily variable and economical variable electronic component with a dustproof structure .

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the variable electronic component of the present invention is shown in FIGS.
This will be described with reference to FIG. 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. 2 is a cross-section obtained by combining the cross-sections AA ′ and BB ′ of FIG. FIG. 3 and FIG. 3 are front views. FIG. 4 is a top view of a substrate as the main part. 5 (A) is a top view of the operation body which is the essential part, FIG. 5 (B) is a side view thereof, FIG. 5 (C) is a bottom view thereof, and FIG. 6 (A) is the essential part. Top view of sliding body, FIG.
(B) is the same side view. FIG. 7 is a top view showing that the central terminal plate, which is the main part, is connected to the connecting member (hoop-shaped central terminal plate). FIG. 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.
10B is another embodiment of FIG. 10B, and FIG.
11 is an enlarged sectional view 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 assembly of the upper case and the lower case of FIG.

[0014] 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 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, and 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 a state in which the stopper reinforcing portion 1d is connected to the lead-out terminal 2 before the reinforcing portion 1d is formed by bending. A connecting hole 2f is formed in the middle of the one end 2a. 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 inclined wall 4e is formed on the other side 2c of the lead-out terminal 2 so as to be inclined at a predetermined angle. 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-like material such as polyimide or polyetherimide or a plate-like 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 in printing and assembly. Formed
It is, also on a main surface 7a and the resistor film 8 horseshoe is formed around the center hole 7b, a further one main surface 7a of the end portion 8a and the substrate 7 of the resistor film 8 An electrode 9 is formed between the electrodes or on 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
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 central terminal plate 1 is a step 4d on the bottom of the lower case 4.
Side, and the two holding claws 1g of the central terminal plate 1 are bent and crimped so as to sandwich the holding projection 4b of the lower case 4 from both sides. The upper case 3 and the lower case 4 are formed.
And are fixed. At this time, the flesh of the holding protrusion 4b of the lower case 4 is brought closer to the engaging portion 1f side of the central terminal plate 1 and is fixed more firmly. Incidentally, before and after combination, the grease between the upper case 3 and lower case 4, the surfactant material may be disposed an adhesive.

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.
Of the lead-out terminal 2 projecting 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 operation 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 drawer terminal 2 having the elastic contact portion 2h, the upper case 3 formed integrally with the drawer terminal 2, the lower case 4, It comprises a substrate 7 on which a resistor film 8 and / or an electrode 9 is formed, and a sliding member 6 arranged to slide on the substrate 7 , wherein an end 8 a of the resistor film 8 or The substrate 7 is sandwiched between the upper case 3 and the lower case 4 such that the contact portion 2h of the lead terminal 2 extending from the upper case 3 side to the electrode 9 is pressed.
Since the fixed, the lead terminals 2 and the soldering is not needed between the substrate 7 and the like, po therewith as the substrate 7
Film-like materials such as polyimide can also be used easily.

Since the substrate 7 does not need to be insert-molded with the lower case 4 or the like, if the substrate 7 is formed of ceramics or the like, the substrate 7 may be cracked or cracked during insert molding. And without eccentricity ,
Breakage of the mold is reduced, and the substrate 7 occurs or when you insert molded easily short shot defect of the origination
Raw can be prevented, moreover Lee only terminals such the leading terminal 2
Since the insert molding is used, molding is easy. The contact 6d of the sliding body 6 and the periphery of the resistor film 8 are surrounded by the upper case 3, the substrate 7 and the lower case 4, thereby providing a dustproof structure, and connecting the lead terminals 2 to each other. Since the assemblage 10 is made continuous , assembly can be performed easily and continuously, so that mass productivity can be improved . Further, the end 8a of the resistor film 8 of the substrate 7 pressed against the contact portion 2h of the lead terminal 2
Alternatively, the back surface in the vicinity of the electrode 9 may be connected to the substrate receiving surface 4 of the lower case 4.
The contact 2h of the lead terminal 2 and the end 8a or the electrode of the resistor film 8 of the substrate 7 are received at the other end 2j (metal portion) of the lead terminal 2 exposed from the terminal a. 9 is more stably pressed . further,
A sliding body 6 is provided in an opening 3c formed on the substrate 7 side of the upper case 3, and a contact 2h of the lead terminal 2 is provided in a contact space 3f formed in the same direction. Therefore , the sliding member 6 and the contact portion 2h of the lead-out terminal 2 are disposed in the opening 3c and the contact space 3f of the upper case 3, respectively. Resistive film 8 of substrate 7 and electrode 9
It is also possible, to be more stable pressure for the. Ma
In addition, a concave introduction wall 4e is formed in the lower case 4 , and a concave portion 4f having a depth corresponding to the material thickness of the extraction terminal 2 is formed on the upper surface of the lower case 4 , and a contact point of the extraction terminal 2 is formed. Part 2
combining the upper case 3 and the lower case 4 such that h is located in a concave portion 4f formed on the upper surface of the lower case 4,
The contact portion 2h of the lead terminal 2 is connected to the concave portion 4 of the lower case 4.
Due to the disposed f, the positioning contact portion 2h of the lead terminals 2 to state becomes sandwiched between the lower case 4 and the upper case 3, i.e. the contact portion 2h of the lead terminals 2 stable Retention will be done . and again,
A notch 2k is formed at the tip of the contact portion 2h of the lead terminal 2.
In this case, there are a plurality of tips of the contact portion 2h.
Or the contact portion 2h pulls the uneven portion 2l in the direction in which the contact portion 2h is pressed against the end 8a of the resistor film 8 or the electrode 9.
When formed at the tip of the contact portion 2h of the output terminal 2, the contact
In this state , a convex portion exists on the press contact surface side of the point portion 2h .
Because, formed in the substrate 7 and the contact portion 2h of the lead terminals 2
The end 8a of the resistor film 8 or the electrode 9 is more stably pressed.

In the above embodiment, the upper case 3
And the lower case 4 connected by the middle part 2g of the lead terminal 2
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
In the above embodiment, the center terminal plate may be used.
1 is insert-molded in the upper case 3
As described above , a structure in which the operating body 5 and the sliding body 6 are attached to the central terminal plate 1 may be assembled to the upper case 3.

In the above embodiment, the upper case 3 and the lower case 4 are connected by the lead-out terminal 2.
So that they are connected by the central terminal plate 1.
At best, and also the part of the central pin plate 1 is formed integrally with the lower case 4, it is and projected the holding claws 1g of the central terminal plate 1 from the lower case 4 side, for holding
A nail 1 g is swaged on the holding projection formed on the upper case 3.
By fixing the upper case 3 and the lower case 4
May be.

Further, the upper case 3 and the lower case 4 are fixed by caulking the holding claws 1g of the central terminal plate 1 to the holding projections formed on the two surfaces of the lower case 4. May be formed, and a holding claw is formed on the lead terminal 2.
Then, the upper case 3 and the lower case 4 may be fixed by caulking the holding claw to a holding protrusion formed on the upper case 3 or the lower case 4 . Also on
In this embodiment, the operating body 5 and the sliding body 6 are rotated with respect to the central hole 1a of the central terminal plate 1.
Although the above description has been made, by forming the central hole 1a of the central terminal plate 1 in a long hole shape, the operating body 5 is formed.
Alternatively, the sliding body 6 may make a linear motion.

In the above embodiment, the operating body 5 is mounted on the central terminal plate 1 .
Although the above has been described, an attaching portion may be formed on the sliding body 6 without the operating body 5, and the attaching portion may be movably attached to the central hole 1a of the central terminal plate 1 by caulking or the like, Further, the operation body 5 with the sliding body 6 attached thereto is connected to the central terminal plate 1 or the upper case 3.
And a central hole 1 of the central terminal plate 1
a or the operating body 5 protruding from the central hole 1a
May be operated . The substrate 7 has a single not insert molded into the lower case 4
That is, insert molded may be formed integrally, and also, the upper case 3 and the lower case 4
When forming, the resin is flowed in from the gate on one case side connected by the passing gate, and part of the passing gate is eliminated by being pushed in with the movable pin in the mold, or after being integrally molded, The passage gate may be cut.

[0032] Incidentally, Oite the above embodiment, the variable resistor
The Although shown in the example, the present invention is of course intended to be a variable capacitor or a switch, or the like can be applied as well.

[0033]

As is clear from the above embodiment, the present invention
It includes a lead terminal contact portion is formed with resilient, and upper case is fixed to the <br/> lead terminals, and a lower case, a substrate on which at least the resistor film or electrode is formed, this
A sliding body arranged to slide with respect to the substrate of
The sliding body is provided with an opening formed on the substrate side of the upper case.
The contact portion of the lead terminal is disposed in the mouth, and
The contact space on the board side of the upper case extends from the case side.
The contact portion of this lead-out terminal is
Pressure contact with the end of the resistor film formed on the substrate or the electrode
So that the upper case and the lower case
Is fixed by sandwiching it. According to this configuration, the elasticity
Resistor skin having a contact portion of a lead terminal having a lead formed on a substrate
Or the end of the film is disposed in pressure-contact with the electrode
This eliminates the need for soldering the lead-out terminal to the board.
Between the upper case and the lower case.
Because the substrate is in the form of a film such as polyimide
Can be easily used, and
It is not necessary to insert mold with the case etc.
Of cracks, cracks, and eccentricity of the substrate due to the sheet molding
Can also be avoided, and insert molding the substrate
Short shot failures that are likely to occur when
Can also be prevented, and moreover, it slides against the substrate.
The sliding body provided is an opening formed on the substrate side of the upper case.
The connection of the lead terminal, which is provided in the mouth and has elasticity,
The dotted part extends from the upper case side and is
The sliding body is disposed in the contact space on the plate side.
And the contact points of the extraction terminals are the openings in the upper case, respectively.
And the contact space.
As a result, the resistance formed on the substrate is hardly affected by others.
The contact part of the lead-out terminal is also elastic against the antibody film or the electrode.
Pressure, so that it can be pressed more stably.
Easy-to-assemble and economical variable type
An electronic component can be provided.

[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, and FIG.

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

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

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 cross-sectional view of a main part of another embodiment of a portion E of FIG. 9; FIG. 10B is an enlarged cross-sectional view of FF ′ of FIG. 10A;

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 2h Contact portion (of the outgoing terminal 2) 2j Other end of the outgoing terminal 2k Notch of the contact portion 2h 2l Uneven portion of the contact portion 2h 3 Upper case 3f Contact space of the upper case 3 4 Lower case 4a Lower Substrate receiving surface of case 4 4e Introducing wall of lower case 4 4f Recess of lower case 4 6 Sliding body 7 Substrate 8 Resistor film 8a End of resistor film 8 9 Electrode

Claims (4)

(57) [Claims] 1. A and lead terminal contact portion is formed with resilient, and upper case this lead terminal is fixed, and the lower case, a substrate formed of at least a resistor film or electrode, to the substrate It sliding disposed to slide against
Moving body, and the sliding body is provided on the substrate side of the upper case.
A contact disposed in the formed opening and connected to the lead terminal;
The part is extended from the upper case side and the substrate of the upper case
Is arranged in the contact space on the
The contact portion is an end portion of the resistor film formed on the substrate or
The upper case and the lower case are pressed against an electrode.
A variable electronic component , wherein the substrate is sandwiched and fixed . 2. A method backside near the end or the electrode of the resistor film of the substrate contact portion of the lead terminal is pressed, and to receive a metal portion that is exposed from the substrate receiving surface of the lower case <br The variable electronic component according to claim 1, wherein: 3. A notch or a notch is provided at the tip of the contact portion of the lead-out terminal.
Or the contact portion is pressed against the end of the resistor film or the electrode.
2. The variable electronic component according to claim 1 , wherein the concave and convex portions are formed in different directions . 4. A drawing end on which an elastic contact portion is formed.
And the upper case to which this lead-out terminal is fixed, and the lower case
And at least a resistor film or electrode
A substrate, and a slider disposed to slide with respect to the substrate.
Moving body, and a concave introduction wall is formed in the lower case.
And a recess having a depth corresponding to the thickness of the lead-out terminal is formed on the upper surface of the lower case , and the contact portion of the lead-out terminal is
The upper part is located in the concave part formed on the upper surface of the lower case.
A variable electronic component, wherein a case and the lower case are combined, and a contact portion of the lead terminal is disposed in a recess of the lower case.