JP3455007B2 - Slide type electric parts - Google Patents

Description

Detailed Description of the Invention TECHNICAL FIELD OF THE INVENTION

The present invention relates to a slide type electric component such as a slide type variable resistor and a slide type switch, and more particularly to a thin slide type electric component.

[Prior art]

FIG. 7 is a plan view showing a slide type variable resistor of conventional slide type electric parts, and FIG. 8 is a longitudinal sectional view of the same. In FIG. 7 and FIG. 8, a slide type variable resistor which is a conventional slide type electric component is composed of a substrate 1 made of a material such as glass epoxy resin and a strip-shaped passive element formed on the substrate 1 by printing or the like. A resistor 2 and a conductor 3, a plurality of terminals 4 fixed to both ends of the substrate 1 in the longitudinal direction by eyelets 5, and a substantially cylindrical shape, and a knob (lever) portion 7a is provided on one surface thereof. It is composed of a slider seat 7 made of synthetic resin and formed on one side, and a slider 10 made of a metal thin plate fixed to the slider seat 7 by insert molding or the like.

The slider receiver 7 has a wall surface 7b sandwiching the substrate 1. The slider receiver 7 is attached to the substrate 1 in the process before the terminal 4 is attached to the substrate 1 by the eyelet 5.
Is inserted. As a result, the slider 10 fixed to the slider receiver 7 is slidably mounted on the substrate 1 while being in elastic contact with the passive element made up of the resistor 2 and the conductor 3 on the substrate 1. .

Then, when the knob (lever) portion 7a protruding to the outside of the slider receiver 7 is slid by grasping it with a finger or the like, the slider receiver 7 reciprocates along the longitudinal direction of the substrate 1. As the slider 10 moves, the slider 10 slides on the resistor 2 and the conductor 3 accordingly, and the resistance value changes. The reciprocating movement is restricted by the bottom wall portion of the slider receiver 7 contacting the side leg portion of the terminal 4, in other words, the terminal 4 functions as a stopper, and the slider receiver 5 is always in a predetermined range. It is formed so as to be located inside. The slide type variable resistor as described above is attached to the circuit pattern substrate 9 by connecting the terminal 4 to a circuit pattern (not shown) by soldering or the like, and exerts its function.

[Problems to be Solved by the Invention]

However, in such a slide type variable resistor, when the resistor 2 and the conductor 3 formed on the substrate 1 are attached to the circuit pattern substrate 9 because the terminal 4 is projected in the surface direction of the substrate 1. Since the surface of the substrate 1 is installed perpendicularly to the circuit pattern substrate 9, the resistor 2 and the conductor 3 are exposed apart from the circuit pattern substrate 9, and dust and the like are easily attached. .

Further, the substrate 1 of the slide type variable resistor
Is formed of glass epoxy resin or the like in order to have heat resistance. And, in general, glass epoxy resin is
When the variable resistor is of a white type or a gray type and is incorporated in an electronic device (set), the inside of the device can be visually recognized from the opening of the device in which the knob portion 7a of the slide type variable resistor is exposed. The part where the inside of the device can be visually recognized is preferably black. When the substrate 1 is made of a white or gray resin material, it is necessary to dispose a so-called blind member made of black cloth or the like in the opening of the device so that the inside of the device cannot be seen from the knob portion. It was

The movement of the slider receiver 7 of the slide type variable resistor is restricted by the terminal 4.
Since the terminal 4 also serves as a stopper member, a sufficient design is required for the mounting strength of the terminal 4.

Furthermore, the above-mentioned slide type requires a step of penetrating the substrate 1 into a slider receiver 7 to which a slider 10 is fixed as an assembling step, and the slider 6 is deformed in the penetrating step. There is a problem that it will occur, which is an increase in cost. Since the slider receiver 7 has a substantially cylindrical shape and sandwiches the passive element of the substrate 1, the thickness of the electrical component is the same as the thickness of the wall surface 7b of the slider receiver 7 that sandwiches the substrate 1. This is an obstacle to the reduction of thickness.

When the slide type variable resistor as described above loses its thinness or is incorporated into an electronic device, a blind member for covering the slide type variable resistor is arranged or a resistor on a substrate is placed. There is a case that dust adheres to the etc. and hinders stable operation.

[Means for Solving the Problems]

A first means for solving the above problem is to provide a substrate having a passive element formed on one surface and terminals formed at an end portion in the longitudinal direction, a flat plate portion, and the passive element above. A stopper plate made of a metal material integrally formed with a slider piece by a bending process for sliding the slider, an operating knob,
And a substantially U-shaped holding portion connected to this operation knob
And has a fixing plate for fixing the stopper plate to the end of this holding part.
Parts made from the operation body made of a molding material with a formed, said stop plate and engaged with said operating member, between the operating body and the stop plate, and a configuration in which the substrate is interposed.

The second means is that a substrate on which a passive element is formed on one surface and a terminal is formed on an end portion in the longitudinal direction, a flat plate portion, and a folding portion for sliding on the passive element.
Metallic material in which the slider piece is integrally formed by bending
A stopper plate made of the operation knob, and the operation knob
It has a substantially U-shaped holding part that is connected in series.
Molding material having a fixing portion for fixing the stopper plate at its end
An operating body made of, consists of a casing for holding the substrate, engaged with said operating member and said stop plate, between the operating body and the stop plate, is interposed said substrate and said casing It was configured .

[0012] A third means is a projection provided on an end of the casing, the projecting portion and the operating body is a structure in which restrict the sliding range of the operating body contacts. The fourth means is
The casing is made of black molding resin material.
It was

A fifth means is to connect the terminal from the substrate.
In the protruding direction, the passive element of the substrate is formed
The structure is the surface side. A sixth means is that the holding portion is
On the outer surface of the bottom of the casing where the substrate is held
First abutting portion that abuts and outside the side wall of the casing
And a second contact portion that contacts the surface.

A seventh means is to connect the terminal to a circuit pattern substrate.
When mounted on a plate, the passive element of the substrate
The structure was such that it was attached toward the surface of the road pattern substrate.

[0015]

[0016]

An example of an embodiment of the present invention will be described in detail below. FIG. 1 is an exploded perspective view showing a slide type variable resistor in a slide type electric component according to an embodiment of the present invention. FIG. 2 is a plan view showing a slide type variable resistor according to an embodiment of the present invention. FIG. 3 is a cross-sectional view showing a slide type variable resistor according to an embodiment of the present invention. Figure 4
Shows a slide type variable resistor of one embodiment of the present invention,
FIG.

In FIG. 1, a strip-shaped resistor 2 and a conductor 3 as a passive element are printed on one surface of a substrate 1 made of a heat-resistant material such as laminated phenol resin or glass epoxy resin. It is formed by. Four terminals 4 fixed to the substrate 1 by eyelets 5 are arranged at respective ends of the resistor 2 and the conductor 3. Note that the four terminals 4 are protruded from the substrate 1 by bending the tip portions 4a of the terminals 4 from the substrate 1 to the surface side where the resistor 2 and the conductor 3 are formed. Further, the tip 4a of the terminal 4 is formed by bending in the longitudinal direction of the substrate 1 and in parallel with a circuit surface 9a of a circuit pattern substrate 9 described later.

A casing 6 made of glass reinforced nylon or glass reinforced polyphenylene sulfide having excellent heat resistance has a substantially U shape for holding the resistor 2 and the conductor 3 of the substrate 1. A side wall 6a ', a main body portion 6a, and projections 6c formed at the respective ends in the longitudinal direction of the casing 6 for covering the end portion of the substrate 1 on which the eyelets 5 of the terminals 4 are provided, The bottom wall of the protrusion 6c has a pair of through holes 6b communicating with the through hole 5a of the eyelet 5, and the side wall of the protrusion 6c has the main variable resistance on the circuit pattern substrate 9 (see FIG. 3). A positioning projection 6d for determining the position of the container and a step portion 6e abutted on the circuit pattern substrate 9 are formed. The through hole 6b of the casing 6 is a guide hole for an assembling jig when assembling the present slide-type electric component, which will be described later.

The operating body 7 is provided with an operating knob 7a which is arranged in a protruding manner and a holding portion 7b which is connected to the operating knob 7a and which is substantially U-shaped. The bottom wall portion of the holding portion 7b has a first contact portion 7c, and the side leg portions have a second contact portion 7d.
Are formed. The first contact portion 7c contacts the bottom portion of the main body portion 6a of the casing 6 that faces the surface on which the substrate 1 is held. The second contact portion 7d contacts the side wall 6a 'of the main body portion 6a of the casing 6, and each contact contributes to smooth sliding of the operating body 7. Further, the four fixing portions 7 are provided at the end of the substantially U-shaped holding portion 7b.
e is formed. It should be noted that although a square hole is formed in the bottom wall portion, this hole is a hole necessary when resin-molding the second contact portion 7d with a mold. The casing 6 is a molding material such as glass reinforced nylon, and is made of a black molding material. The operating body 7 is also made of the same molding material.

The stopper plate 8 is composed of a flat plate portion and a slider piece 8a, and is made of, for example, a metal material such as Western-style or phosphor bronze. In detail, four plate mounting holes 8b through which the fixing portions 7e of the operating body 7 penetrate are formed in the flat plate portion of the stopper plate 8. Further, a pair of slider pieces 8a which are elastically contacted with the resistor 2 and the conductor 3 formed in a strip shape are formed. The slider piece 8a is a stopper plate 8
It is formed by continuous punching and bending when forming. This punching / bending process is performed by stamping a hoop-shaped Western lodging or phosphor bronze into a flat plate with a press die, and then punching the slider piece 8a.
The portion to be formed is bent so as to overlap with the back side of the flat plate portion so as to elastically contact the resistor 2 and the conductor 3 of the substrate 1. Further, the stop plate 8 is formed by punching a bent hoop-shaped Western-style lodging or phosphor bronze.
Further, in the flat plate portion of the stopper plate 8, four mounting holes 8b formed at positions facing the four fixing portions 7e formed on the operating body 7, and the bending strength of the stopper plate 8 are increased. Therefore, a protrusion 8c is formed between the mounting holes 8b. Although the above embodiment has described the electric component including the substrate 1, the casing 6, the operating body 7, and the stopper plate 8, the present invention can be configured without the casing 6.

Next, the assembly process of this embodiment will be described. First, a substrate 1 in which a resistor 2 and a conductor 3 are formed in a strip shape, and four terminals 4 fixed by eyelets 5 are provided in a protruding manner.
Is placed on the main body 6a of the casing 6. Then, the holding portion 7b of the operating body 7 is fitted so as to wrap the outside of the main body portion 6a. At this time, the through hole 6b of the casing 6 and the hole of the eyelet 5 of the substrate 1 are used for positioning the assembly position by the assembly jig. After that, the four fixing portions 7e of the operating body 7 are penetrated and the mounting holes 8b of the stopper plate 8 are arranged. After that, the four fixing portions 7e are deformed by heating and sandwiched between the substrate 1 and the casing 6 by the operating body 7 and the stopper plate 8. The slide type variable resistor thus assembled is formed by inserting the positioning projection 6d into a predetermined hole formed in the circuit pattern substrate 9 to determine the position and forming the position on the circuit pattern substrate 9. Four terminals 4 are placed on the land portion (not shown) and fixed on the circuit pattern substrate 9 by soldering with a reflow furnace or the like. At this time, the resistor 2, the conductor 3, and the slider piece 8a on the substrate 1 are arranged to face the circuit pattern substrate 9.

Further, the operation of the slide type variable resistor of this embodiment will be described. When the operating knob 7a of the operating body 7 is picked up with a finger or the like and slide-operated, the slider piece 8a of the stopper plate 8 fixed to the operating body 7 reciprocates (slides) along the longitudinal direction of the substrate 1, and Accordingly, the slider piece 8a slides on the resistor 2 and the conductor 3 so that the resistance value changes.

A holding portion 7b is formed so as to be connected to the operating knob 7a of the operating body 7. The holding portion 7b has a first contact portion 7c on the bottom wall portion and a side leg portion having a first contact portion 7c. Second contact part 7d
The first contact portion 7c contacts the bottom portion of the body 6a of the casing 6 that faces the surface on which the substrate 1 is held, and the second contact portion 7d functions as the second contact portion 7d. It comes into contact with the side wall 6a 'of the main body portion 6a, and these contact portions 7c and 7d play a role as if they were rails. Furthermore, in the present invention, the operating knob 7a of the operating body 7
Since the sliding range is restricted by the protrusion 6c of the casing 6, the terminal 4 does not have to function as a stopper.

Next, FIGS. 5 and 6 will be described. Figure 5
FIG. 6 is a perspective view showing another embodiment of the operating body of the slide type electric component of the present invention, and FIG. 6 is a transverse sectional view showing another embodiment of the slide type electric component of the present invention. In this other embodiment, the operation knob 7a ′ formed integrally with the holding portion 7b of the operating body 7 is formed in a direction perpendicular to the surface of the bottom wall portion of the holding portion 7b, and therefore the operating body 7 is formed. When assembling the substrate 1 on the substrate 1, the operation knob 7a 'is assembled so as to be perpendicular to the plane of the substrate 1 on which the resistor 2 and the conductor 3 are formed. The other structure is the same as that of the above-mentioned embodiment. Therefore, the assembling process and the operation of the electric components after assembling are the same, and the description thereof will be omitted.

【The invention's effect】

According to the present invention, the substrate is interposed between the stopper plate and the operating body, and the slider plate is integrally formed on the stopper plate which is locked to the operating body. In the assembling process, the substrate can be assembled on the operating body and the stopper plate on the substrate in sequence. Therefore, the assembly becomes easy.

According to the present invention, the substrate and the casing are interposed between the stopper plate and the operating body, and the slider plate is integrally formed on the stopper plate which is locked to the operating body. In the assembly process of the container, the casing can be assembled on the operating body, the substrate on the casing, and the stopper plate on the substrate in this order. Therefore, the assembly is facilitated, the substrate is protected by the casing, and the operating body is held by the casing, so that the operating body can be stably operated.

Further, according to the present invention, since the projection at the end portion of the casing and the operating body are in contact with each other to regulate the sliding range of the operating body, the operating body is more stable than the structure in which the operating body is in contact with the terminal. It becomes a stopper mechanism for the operating body. This reduces the requirement for the terminal to be fixed to the substrate.

Further, according to the present invention, since the casing is made of the black molding resin material, when the slide type electric component of the present invention is incorporated into a set of electronic equipment, the inside of the operation knob is visually recognized from the gap of the moving portion. It is not necessary to dispose a shielding member for preventing the above-mentioned problem.

Further, according to the present invention, since the protruding direction of the terminal from the substrate is the surface side of the substrate on which the passive element is formed, when the present slide type electric component is attached to the circuit pattern substrate, the passive pattern of the substrate is obtained. The element is arranged facing the circuit pattern substrate surface side. For this reason, passive elements such as conductors and resistors are protected by the circuit pattern substrate from environmental changes such as dust and sulfurization, and stable performance of the slide-type electric component can be maintained.

[0031]

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of a slide-type electric component of the present invention.

FIG. 2 is a plan view showing a first embodiment of a slide-type electric component of the present invention.

FIG. 3 is a cross-sectional view showing a first embodiment of a slide-type electric component of the present invention.

FIG. 4 is a vertical sectional view showing a first embodiment in which a slide type electric component of the present invention is placed on a circuit pattern substrate.

FIG. 5 is a perspective view showing another embodiment of the operating body of the sliding electric component of the present invention.

FIG. 6 is a cross-sectional view showing another embodiment of the slide type electric component of the present invention.

FIG. 7 is a plan view showing a conventional slide type electric component.

FIG. 8 is a vertical sectional view showing a conventional slide type electric component.

[Explanation of symbols]

1 substrate 2 resistor (passive element) 3 Conductor (passive element) 4 terminals 5 eyelet 6 casing 6c protrusion 7 operating body 7a Operation knob 8 stop plate 8a Slider piece 9 circuit pattern board

Claims (7)

(57) [Claims] 1. A substrate on which a passive element is formed on one surface and terminals are formed at ends in a longitudinal direction, a flat plate portion, and a sliding process for sliding on the passive element. The child piece has a stop plate made of a metal material integrally formed, an operation knob, and a substantially U-shaped holding portion connected to the operation knob, and the stop plate is provided at an end of the holding portion. An operating body made of a molding material in which a fixing portion for fixing is fixed, the locking plate and the operating body are locked, and the substrate is interposed between the locking plate and the operating body. A slide-type electrical component characterized by. 2. A substrate on which a passive element is formed on one surface and terminals are formed at ends in the longitudinal direction, a flat plate portion, and a sliding process for sliding on the passive element. The child piece has a stop plate made of a metal material integrally formed, an operation knob, and a substantially U-shaped holding portion connected to the operation knob, and the stop plate is provided at an end of the holding portion. An operating body made of a molding material that forms a fixing portion for fixing, and a casing that holds the substrate,
A slide-type electric component characterized in that the stopper plate and the operating body are locked, and the substrate and the casing are interposed between the stopper plate and the operating body. 3. The slide mold according to claim 1, wherein a protrusion is provided at an end of the casing, and the protrusion contacts the operating body to regulate a sliding range of the operating body. Electrical component. 4. The slide type electric component according to claim 2, wherein the casing is made of a black molding resin material. 5. The protruding direction of the terminal from the substrate is
The slide-type electric component according to claim 1, wherein the slide-type electric component is on a surface side of the substrate on which the passive element is formed. 6. The holding portion includes a first abutting portion that abuts an outer surface of a bottom portion of the casing that holds the substrate, and a second abutting portion that abuts an outer surface of a side wall of the casing. The slide type electric component according to claim 2, further comprising: 7. The passive element of the substrate is attached toward the surface of the circuit pattern substrate when the terminal is attached to the circuit pattern substrate.
7. The slide type electric component according to any one of 1 to 6.