JPS6317207Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a slide type variable resistor, and in particular, the height of the slide type variable resistor is made as small as possible.
This article relates to an improved structure of a sliding variable resistor that meets space and design requirements.

FIG. 1 shows a perspective view of a conventional sliding type variable resistor.

As shown in FIG. 1, a conventional slide type variable resistor has a resistor (not shown) formed on the top surface, an insulating substrate 2 having terminals 1 at both ends, and a long groove 3 in the center of the top surface.
A case 5 is provided with a mounting foot 4 on the side.
A slider receiver 6 that slides on a resistor (not shown) of the insulator substrate 2 is interposed between the insulating substrate 2 and the case 5, and a lever provided on the slider receiver 6 is interposed between the insulating substrate 2 and the case 5. 7 was made to protrude from the long groove 3 of the case 5 to the upper surface of the case 5.

Then, move the lever 7 as shown by the arrow in FIG.
By moving the slider receiver 6 to the left or right in the figure, the slider receiver 6 moves on the insulating substrate 2, and the resistance value of the slide type variable resistor is changed depending on the amount of movement. It's summery.

However, in the conventional slide type variable resistor, since the lever 7 protrudes upward from the upper surface of the case 5 as shown in FIG. 1, the height dimension H ₀
Therefore, when this type of sliding variable resistor is mounted on a panel or printed circuit board, high integration cannot be achieved due to space and design considerations.

For this purpose, as shown by the imaginary line in FIG.
Attempts have been made to lower the height from H ₀ to H ₁ by using the lever 7a, but this structure also has the disadvantage that the height increases by the amount of bending of the lever 7a.

Moreover, in order to make the height dimension smaller than H ₀ in FIG. 1, as shown in FIG. 2, if the case 5 and lever 7 are reversed by 90 degrees from the state shown in FIG. 1, the height dimension will be H ₀ becomes smaller than H ₂ , but on the other hand, it takes time to bend the terminal 1 and change the dimensional difference of the terminal 1, and in exchange for lowering the height, other work items increase, and due to high integration. It does not lead to drastic improvements.

Still another method is to drill the long hole 3 described above in the side surface of the case 5 and make the lever 7 protrude parallel to the plate surface of the insulating substrate 2. In this way, the height of the sliding variable resistor can be reduced to the height of the case 5, but the direction in which the lever 7 protrudes relative to the direction in which the case 5 is attached to the insulating substrate 2 is Because they are perpendicular, lever 7
There is a problem in that the work of fixing the slider to the slider receiver 6 is complicated and the space required for this is also large.

The present invention attempts to solve the problems of the prior art, and its purpose is to provide a slide type variable resistor that is small in height and easy to assemble.

In order to achieve the above-mentioned purpose, the present invention has a long groove and a window hole respectively drilled on the opposing sides of the case, and a lever is inserted from the long groove side into the through hole of the slider receiver, and these sliding Its unique feature lies in the structure in which the child rest and lever are fixed together from the window hole side.

Embodiments of the present invention will be described below with reference to FIGS. 3 to 6. FIG. 3 is a perspective view of the sliding variable resistor seen from the operating surface, and FIG. The perspective view shown in FIG. 5 shows the slider receiver 6 and the lever 7.
FIG. 6 is a plan view showing the state in which the lever 7 is fitted into the slider receiver 6. In FIGS. 3 to 6, 3a is a long groove from which the lever 7 projects; This long groove 3a is provided on the operation side side surface 5a of the case 5. 5b is a side surface on the back side of the case 5, and a hole 8 is provided in this side surface 5b on the back side. 6a is a guide projection provided on the upper surface of the slider receiver 6, 6b is a hole for fixing the lever 7, 6c is a slider that slides on the insulating substrate 2, and 6d
is a groove for the lever 7, 7a is a mounting part for the lever 7,
Reference numeral 7b is a fitting part of the attachment part 7a of the lever 7, and the explanations of other symbols are the same as those in FIGS. 1 and 2.

In such a structure, the embodiment shown in FIG. 3 differs from the conventional ones in FIGS. 1 and 2 in that the first
In the case shown in FIGS. 2 and 2, a long groove 3 is provided on the top surface of the case 5, and the operation is performed from the top surface of the case 5 using levers 7 and 7a, but in the case shown in FIG. 3a, and the lever 7 is operated from the side surface 5a of the case 5.
As a result, the height dimension of the sliding variable resistor can be minimized as shown by H3 in FIG. ₃ , and high integration is achieved.

Figures 5 and 6 show the slide type variable resistor in the third
4 is a diagram showing a state in which the slider receiver 6 and the lever 7 are connected to achieve the minimum height dimension _H3 as shown in FIG.

First, as shown in FIG. 5, on the upper surface of the almost box-shaped slider receiver 6 made of insulating molded material such as synthetic resin, there is a guide protrusion 6 that is guided along the inside of the case 5.
A is provided on the lower surface of the slider 6c that slides on the resistor (not shown) of the insulating substrate 2, and is fixed by fitting or welding, and on the back surface is a mounting portion 7 of the lever 7.
A hole 6d for fixing the lever 7 is provided, and a hole 6b for fixing the lever 7 passes through the center of the slider receiver 6.

On the other hand, the lever 7 is as shown in FIGS. 5 and 6.
The tip of the lever 7 is provided with a mounting portion 7a, and in the state shown in FIG.
Both ends of the slider receiver 6 and the lever 7 are expanded outwardly by a groove 6d to form a groove 7b, and the slider receiver 6 and lever 7 are integrally joined by this groove 7b.

Note that this work involves inserting the mounting portion 7a of the lever 7 into the hole 6b of the slider receiver 6 arranged inside the case 5 from the long groove 3a side, and then inserting these into the insulating substrate 2.
After fixing the mounting feet 4 of the case 5 to the insulating board 2, it is preferable to insert the lever 7 into the slider receiver 6, which is placed on the rear side surface of the case 5 as shown in FIG. This may be done through the hole 8 provided in the hole 5b, and after this step is completed, the hole 8 may be closed with an insulating tape or the like.

The slider receiver 6, in which the slider receiver 6 and the lever 7 are integrally joined in this way, is held between the case 5 and the insulating substrate 2, as shown in FIG. Long groove 3a provided on side surface 5a
protrude from

By moving the lever 7 on the side surface 5a on the operating surface side to the left or right, the resistance value of the slide type resistor is changed.

In the embodiment of the present invention, as shown in FIG.
A long groove 3a from which the lever 7 projects is provided on the side surface 5a of the case 5 on the operation surface side, and the slider receiver 6 is operated from the side surface 5a of the case 5, so that the height of the slide resistor can be reduced. This allows freedom in selecting the design and mounting space, and also eliminates the conventional bending process of the terminal 1.

As explained above, in the present invention, a lever is inserted into the through hole of the slider receiver through the long groove provided on one side of the case, and the tip of this lever is inserted into the slider receiver through the window hole provided on the other side of the case. Since the slider receiver and the lever are integrated by fixing them in the receiver, it is possible to provide a slide type variable resistor that is small in height and easy to assemble.

[Brief explanation of the drawing]

Figures 1 and 2 are perspective views of a conventional slide type resistor, Figures 3 and 4 are perspective views of the slide type resistor of the present invention, and Figures 5 and 6 are perspective views of a slider receiver. FIG. 6 is a diagram showing an assembled state and a joined state of the lever. 3a...Long groove, 5...Case, 5a...Side surface on the operating surface side, 6...Slider receiver, 7...Lever.

Claims (1)

[Scope of utility model registration request] An insulating substrate having a resistor and a terminal, a slider receiver carrying a slider that slides on the resistor, and a case that includes the slider receiver and is attached to the insulating substrate, In a slide type variable resistor in which a lever for slidingly operating a slider receiver projects outward from a long groove provided on one side of the case, the slider receiver is provided with a through hole that allows insertion of the lever. . A sliding variable resistor, characterized in that a window hole facing the through hole is provided on the other side of the case opposite to the long groove.