JPH0322825Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention is a structure for holding a knob, mainly for a plurality of operation knobs in electrical equipment such as home converters, audio equipment, and satellite receivers, and in particular a structure for holding knobs for keyboard switches. Regarding the improvement of

[Background of the idea]

Conventionally, this type of keyboard switch knob holding structure involves fitting the knob from below into a plurality of insertion holes drilled in the holder, and using a stopper integrally provided at the opening edge of the insertion hole. The position was simply determined by abutting the locking part of the knob.

Therefore, after fitting multiple knobs into the holder, the knobs often fall out of the holder's insertion hole before the next assembly process, and a jig is used to prevent them from falling out. Extra work such as temporary fixing with tape was required, resulting in very poor workability.

[Purpose of invention]

The present invention was developed by focusing on the problems of the prior art described above, and aims to improve workability by preventing the knob fitted into the insertion hole of the holder from coming off.
Another object of the present invention is to provide a knob holding structure that allows the knob to be easily removed from the insertion hole of the holder if necessary.

[Summary of the idea]

In order to achieve this object, the present invention includes a holder having a knob insertion hole with a knob positioning stopper on the opening edge, and a locking part that abuts the positioning stopper and is fitted into the knob insertion hole. In a knob holding structure consisting of a knob to be mounted,
A protruding part is formed at either the lower part of the knob insertion hole or the lower part of the knob, and a hook part corresponding to the protruding part is formed at the other of the knobs, and when the knob is fitted into the knob insertion hole. It is characterized in that the hook portion and the protruding portion are slidably engaged by elastic deformation.

With this structure, the knob fitted into the insertion hole of the holder is prevented from coming off, improving work efficiency, and the knob can be easily removed if necessary.

[Example of idea]

Next, embodiments of the present invention will be described in detail with reference to the drawings.

1 to 6 show a first embodiment of the present invention, and numeral 1 in the figures represents a housing. A fixing plate 2 is fixed to the upper surface of the front side of the housing 1 with nails or the like, and a keyboard 3 is fixed to the upper surface of the fixing plate 2 with an adhesive or the like. The keyboard 3 includes a plurality of fixed contacts 4 spaced apart from each other by a predetermined interval, and a movable contact 6 provided at approximately the center of a plate-shaped bulge 5a formed on the cover thin plate 5 so as to face the fixed contacts 4. The switch is turned on and off by pushing down the movable contact 6 by the lower protrusion of the knob, which will be described later, through the bulge 5a, utilizing its elasticity. There is.

Further, a holder 7 is fixed on the cover thin plate 5 of the keyboard 3, and the holder 7 is provided with a plurality of knob insertion holes 8, 8, . . . .
This knob insertion hole 8 has stoppers 9, 9 for positioning the knob protruding from approximately the center of the short opening edge, and
Approximately at the lower center of the longitudinal edge, there is a protruding portion 10 whose upper surface is a tapered surface 10a that descends toward the tip.
10 are formed.

On the other hand, reference numeral 11 in the figure is a knob that is inserted into the knob insertion hole 8 of the holder 7 from below as shown by the arrow in FIG. The knob body 12 has an exposed portion and a convex portion 12a formed on the lower end surface, and a knob body 12 having a predetermined interval 1 on both sides of the lower part along the longitudinal direction of the knob body 12.
The knob main body 12 and the sub bodies 14, 14 are integrated by connecting bodies 15, 15 provided at both ends. Also, approximately the center of the upper surface of these connecting bodies 15, 15 is a missing locking part 16, 16, and this locking part 16, 16 is protruded from the opening edge of the knob insertion hole 8 of the holder 7 mentioned above. The knob 11 is positioned by coming into contact with the stoppers 9, 9.

Further, the outer upper edges of the sub bodies 14, 14 of the knob 11 are formed into guide tapered surfaces 14a, 14a, and the lower ends of the guide tapered surfaces 14a are formed into right-angled stepped hook portions 14b.

In addition, numeral 17 in the figure is a name plate placed on the holder 7 so that only the head of the knob body 12 is exposed to the outside.

When the knob 11 having the above-mentioned structure is inserted into the knob insertion hole 8 from below the holder 7, the guide tapered surface 14a of the secondary body 14 hits the protruding part 10 after the knob main body 12 has passed, and by further pushing the knob, the hook is inserted. The portion 14b is given elasticity due to the existence of the gap 13, and is deformed by bending while the protruding portion 10
It slides into contact with and passes through. As a result, the locking portion 16 is positioned in contact with the stopper 9, and the hook portion 1
By engaging the protrusion 4b with the protruding portion 10, it is prevented from coming off downward.

Furthermore, the height positional relationship between the hook portion 14b and the protruding portion 10 is determined by the switch stroke B shown in FIG.
The moving amount A is made larger so that there is no problem in the switch operation.

Furthermore, when removing the knob 11 from the insertion hole 8 if necessary, since the upper surface of the protruding portion 10 is a tapered surface 10a that descends toward the tip,
When the knob 11 is pushed down in the opposite direction to insertion, the hook 14b deforms and descends along its tapered surface 10a, making it easy to insert.

On the other hand, what is shown in FIGS. 7 and 8 is a second embodiment of the present invention, and in the case of this second embodiment, the knob 20 is
A guide tapered part 20a and a hook part 20b are integrally formed at the lower part of the holder 21.
A gap 22 is formed on the back side of the portion where the protrusion 10 is formed, and the presence of the gap 22 causes the protrusion 10 to be elastically deformed.

In both the first and second embodiments, the hook portion 14b or the protruding portion 10 is elastically deformed due to the presence of the gaps 13 and 22, but without being limited to this, as shown in FIG. The purpose can also be achieved by bending the protruding portion 23 itself so that it has elasticity.

Further, in each embodiment, the stoppers 9, 9 at the opening edge of the knob insertion hole 8 are positioned on the short side, but it is also possible to provide them in the longitudinal direction, or the protrusion 10 can be provided on the opening edge of the knob insertion hole 8. 8, hook portions 14b, 20b
Although the knobs 11 and 20 are provided with the projecting portion 10, it is of course also possible to provide the hook portion with the insertion hole 8.

[Effect of idea]

As mentioned above, according to the present invention, it is possible to prevent the knob from coming off without affecting the switch stroke at all, and there is no need to use other parts to prevent the knob from coming off, which improves work efficiency. It is possible to improve the quality of the product and reduce the cost of the product.
Furthermore, since the knob can be easily removed if necessary, there will be no problem even in the event of a malfunction.

[Brief explanation of drawings]

Fig. 1 is a partial perspective view of a product implementing the first embodiment of the present invention, Fig. 2 is a cross-sectional perspective view of the same main part, Fig. 3 is an exploded perspective view of the holder and knob, and Fig. 4 is a perspective view of the same holder and knob. 5 is a sectional view taken along line X-X in FIG. 4, FIG. 6 is a sectional view taken along line Y-Y in FIG. 4, and FIG. 7 is a sectional view taken along line Y-Y in FIG. FIG. 8 is a plan view of the second embodiment, FIG. 8 is a cross-sectional view of the same, and FIG. 9 is a cross-sectional view showing a modified example of the protruding portion. 7... Holder, 8... Knob insertion hole, 9... Stopper, 10, 23... Projection part, 11, 2
0...pick, 13,22...interval, 14b,20
b...Hook part, 16...Locking part.

Claims (1)

[Scope of utility model registration request] A knob holding structure comprising: a holder having a knob insertion hole provided with a knob positioning stopper on the opening edge; and a knob fitted into the knob insertion hole, the knob having a locking part that abuts the positioning stopper. , forming a protruding part on either the lower part of the knob insertion hole or the lower part of the knob, forming a hook part corresponding to the protruding part on the other one, and fitting the knob into the knob insertion hole. A knob holding structure characterized in that the hook part and the protruding part are slidably engaged by elastic deformation.