JPH0532973Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of application of the invention] The present invention relates to sliding type electric components such as sliding type variable resistors and sliding type switches, and in particular,
This article relates to thin slide-type electrical components called slim types.

[Background of the idea]

A conventional example of this type of slide type variable resistor is shown in FIG. In the figure, 1 is a board, on which a strip-shaped resistor 2 and a conductor 3 are patterned, and a plurality of terminals 4 are attached to both ends of the board 1 by eyelets. It is being
5 is a slider receiver made of synthetic resin, 6 is a slider made of a thin metal plate fixed to the slider receiver 5, and the slider receiver 5 is attached to the board before the terminal 4 is attached. 1 and is slidably mounted around the substrate 1 with the slider 6 in elastic contact with the conductive pattern of the resistor 2 and the like. When the lever portion 5a protruding above the slider receiver 5 is pinched with fingers or the like and operated to slide, the slider receiver 5
moves back and forth along the longitudinal direction of the substrate 1, and the slider 6 slides on the resistor 2 accordingly, changing the resistance value. In addition, the slider receiver 5
By coming into contact with the terminal 4, the reciprocating movement is regulated; in other words, the terminal 4 functions as a stopper, and the slider receiver 5 is always positioned within a predetermined range.

By the way, such a slide type variable resistor has a structure in which the slider receiver 5 slides on the cut end surfaces 1a, 1b of the substrate 1.
Since the smoothness of the lever part 5a is not necessarily good, and undesirable and irregular sliding resistance occurs, there is a problem in that the lever part 5a does not feel good to the fingers or the like pinching the lever part 5a during sliding operation. In addition, when trying to miniaturize the slide type variable resistor in order to meet the recent demand for miniaturization, it is necessary to make the terminal 4 thinner and its eyelet smaller.
If the eyelet is made smaller, it will not be possible to obtain sufficient mounting strength, and the risk of deformation or falling off will increase, especially for the terminal 4, which also serves as a stopper.In the end, it will be difficult to miniaturize the product. There was a problem.

[Purpose of invention]

It is an object of the present invention to provide a sliding electric component that eliminates the above-mentioned drawbacks of the prior art, provides a good feel during sliding operation, and can be miniaturized.

[Summary of the idea]

In order to achieve this objective, the present invention provides a substrate having a conductive pattern formed on at least one main surface and terminals attached to both ends in the longitudinal direction;
In a slide-type electrical component having a slider that comes into elastic contact with the pattern and a slider receiver that can freely reciprocate in the longitudinal direction of the substrate, a frame made of synthetic resin is outsert molded around the periphery of the substrate. stopper portions that cover the mounting portions of the terminals are protrudingly provided at both ends of the frame body, and click holes are provided in the frame body between these stopper portions, and the slider receiver is attached to the frame body. and the open end of the slider receiver is closed with a holding plate having a slip spring, and the slider receiver reciprocates between the two stopper portions using the frame as a sliding surface, The invention is characterized in that the click spring slides on the frame and engages and disengages from the click hole.

[Example of idea]

Embodiments of the present invention will be described below with reference to the drawings.

Figures 1 to 3 show an embodiment of the sliding type variable resistor according to the present invention. Figure 1 is a rear view of the sliding type variable resistor after assembly is completed, and Figure 2 is a longitudinal cross-section of the sliding type variable resistor. 3 are front views of the substrate before outsert molding.

In these figures, 10 is a substrate, and a band-shaped resistor 11 and a conductor 12 are disposed on the substrate 10.
A plurality of terminals 13 are attached to both ends of the substrate 10 by eyelets. Here, since the terminals 13 are thinner than the terminals 4 in the conventional example and have smaller eyelets, they can be mounted closely within a narrow area at both ends of the board 10. Therefore, the substrate 10 is also smaller than the substrate 1 in the conventional example. Reference numeral 14 denotes a frame made of a heat-resistant synthetic resin material such as polybutylene terephthalate, which is provided by performing outsert molding on the substrate 10, and has stopper portions 14a protruding from the upper portions of both ends. be. In addition, approximately in the center of the back surface of this frame 14,
A click hole 14b (see FIG. 2) is provided for engaging and disengaging a click spring portion 17a of the holding plate 17, which will be described later. When the frame 14 is outsert molded on the board 10 in this way, even if the crimp strength of the terminal 13 is insufficient, the terminal 13 can be firmly attached due to the reinforcement of the outsert molding. Become. Reference numeral 15 denotes a slider holder made of synthetic resin with a lever portion 15a projecting thereon, 16 a slider made of a thin metal plate fixed to the slider holder 15, and the slider 16 is connected to the resistor. 11 and a conductive pattern such as a conductor 12, the slider receiver 15 is fitted onto the frame 14 with a holding plate 17 made of a thin metal plate fixed to its open end 15b side. That is, by closing the open ends 15b of the slider receivers 15 with the holding plate 17, the frame body 14
5 and a retaining plate 17, and the click spring portion 17a of the retaining plate 17 comes into elastic contact with the frame 14. When the lever part 15a is pinched with fingers or the like and operated to slide, the slider receiver 15 reciprocates along the longitudinal direction of the board 10 while sliding on the frame 14, and the slider 16 moves along with it. The resistance value changes by sliding on the resistor 11. Here, since the frame body 14, which is a molded product, has excellent smoothness, its sliding resistance is small and stable, and the feel of the lever part 15a when gripping the lever part 15a is extremely good. Also, with the sliding operation, the click spring portion 17 of the holding plate 17
A also slides on the frame 14, and a click feeling is obtained when the click spring portion 17a is engaged with or disengaged from the click hole 14b provided at a predetermined position corresponding to a predetermined resistance value. . Note that the reciprocating movement of the slider receiver 15 is performed by the stopper portion 1 of the frame 14.
4a, the sliding terminal receiver and the terminal do not come into contact with each other as in the conventional example.
Therefore, even if the terminal 13 is thin, there is no need to worry about deformation.

Next, the assembly process of this embodiment will be explained.

First, a substrate 10 on which a conductive pattern such as resistors 11 and conductors 14 is formed and on which a plurality of terminals 13 are protruding is subjected to outsert molding using a synthetic resin material such as polybutylene terephthalate, to form a frame 14 having stopper portions 14a and click holes 14b.
Next, the frame 14 is fitted into the slider receiver 15 from the open end 15b side,
The slider 16 is brought into elastic contact with the conductive pattern on the substrate 10, and in this state, the retaining plate 17 is fixed to the slider receiver 15 by fusion or the like to close the open end 15b, whereby the slider terminal receiver 15 is mounted so as to be freely slidable around the frame body 14, and assembly is completed.
In this manner, the slider receiver 15 is assembled by closing the open end 15b with the retaining plate 17.
After the outsert molding, the slider receiver 15 can be assembled.

In the above embodiment, the resistor 11 and the conductor 12 are formed on one side of the substrate 10, but the resistor 11 and the conductor 12 are
It is also possible to form on both sides of the substrate 10,
In this case, a slider similar to the slider 16 on the slider receiver 15 side may be fixed to the holding plate 17 as well.

[Effect of idea]

As explained above, according to the present invention, since both the slider receiver and the click spring slide on the smooth frame, the feel during the slide operation accompanied by a click feeling is good, and furthermore, Even if thin terminals are mounted closely together, the frame protects and reinforces them, so there is no risk of them deforming or falling off, making it possible to downsize the product.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the sliding type variable resistor according to the present invention. Figure 1 is a rear view of the sliding type variable resistor after assembly is completed, and Figure 2 is a longitudinal cross-section of the sliding type variable resistor. 3 are front views of the substrate before outsert molding, and FIG. 4 is a front view showing a conventional slide type variable resistor. 10... Board, 11... Resistor (conductive pattern), 13... Terminal, 14... Frame, 14a...
Stopper part, 15... Slider holder, 15b...
Open end, 16... slider, 17... holding plate.

Claims (1)

[Scope of utility model registration request] A substrate having a conductive pattern formed on at least one main surface and terminals attached to both ends in the longitudinal direction, and a slider having a slider that comes into elastic contact with the conductive pattern and capable of reciprocating in the longitudinal direction of the substrate. In the slide type electrical component equipped with a moving element receiver, a frame made of synthetic resin is provided by outsert molding around the periphery of the board, and stopper parts that cover the mounting portions of the terminals are provided at both ends of the frame. At the same time, a click hole is provided in the frame between these two stopper parts, the slider receiver is fitted onto the frame, and the open end of the slider receiver is attached to a retaining plate having a click spring. so that the slider receiver reciprocates between the two stopper portions using the frame as a sliding surface, and the click spring slides on the frame to engage and disengage from the click hole. A sliding type electric component characterized by having the following structure.