JPH041615Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a push knob device for turning on and off a push switch.

A conventional push knob device is constructed as shown in FIG. 1 in FIG. 1 is a panel, a hole 1a is formed at a predetermined location in the panel 1, and a knob 2 is inserted into the hole 1a.

A portion of the knob 2 on the back surface side of the panel 1 has a fitting portion 2a formed in a cross-sectional shape of approximately “E”,
Moreover, an actuating piece 2b is integrally formed at the tip thereof. The actuation piece 2b protrudes from the fitting portion 2a. A push switch for turning on and off is arranged at the tip of the operating piece 2b.

Further, a spacer 3 is attached to the back side of the panel 1 so as to surround the fitting part 2a, and a coil spring 4 is interposed between the spacer 3 and the fitting part 2a. The coil spring 4 is coaxial with the actuation piece 2b.

In this way, the conventional push knob device has knob 2.
There are many combinations of coil springs 4 and 4. The use of this coil spring 4 provides a good feeling when operating the knob 2 due to the springiness of the coil spring 4, but on the other hand, there is a drawback that the cost is high.

Alternatively, there is also a structure in which the coil spring is omitted, as shown in FIG. In the case of FIG. 2, the fitting part 2a of the knob 2 has a U-shaped cross section, and the fitting part 2a is fitted into the spacer 3, and the push switch is made to correspond to the fitting part 2a. It is. The case shown in Fig. 2 does not have a coil spring, so it is cheaper than the case shown in Fig. 1, but the disadvantage is that the knob 2 is tilted and there is some play in the front and rear directions, resulting in poor appearance and feeling. has.

Further, as shown in FIG. 3, the tip of the knob 2 is formed thick to provide a thick portion 2c.
A groove is formed in the groove, and the push switch 5 is directly fitted into this groove. In this case, a gap is required around the knob body so that the knob can move smoothly.
It is ugly in appearance.

Figure 4a is a front view showing an example of a push knob applied to a tact switch (a type of push switch whose stroke is extremely short, for example, about 0.3 mm, but which has a click feeling and can be operated tactilely). , FIG. 4b is a sectional view showing the push knob of FIG. 4a combined with a panel and a tactile switch. As is clear from FIGS. 4a and 4b, the knob 2 is inserted into the hole 1a of the panel 1, and the elastic parts 5 and 7 are integrally formed with the knob 2 on the back side of the knob 2. , a tact switch 6 is arranged behind the knob 2. As described above, if the knob 2 and the elastic parts 5, 7 are integrally formed, that is, integrally molded, there is a limit to the inclination of the elastic parts 5, 7, and this has the disadvantage that it cannot be used for a push switch with a large stroke.

This invention was made in order to eliminate the drawbacks of the conventional push knob device described above. , integrated with elastic parts that are arranged above and below the knob body in a substantially circular arc shape with approximately three-quarters of the circumference centered on a point on the straight line, and are deflectable in a direction parallel to the operating direction of the knob body. The object of the present invention is to provide a push knob device that can be molded to improve the feeling and satisfy the appearance with respect to inclinations, gaps, etc.

Hereinafter, embodiments of the push knob device of this invention will be described based on the drawings.

FIG. 5 is a side view of one embodiment, FIG. 6 is a rear view, and FIG. 7 is a bottom view. As is clear from these FIGS. 5 to 7, 11 is a knob body, which is formed into a substantially flat plate shape.

An operating piece 11a is integrally projected from the central portion of the back side of the knob body 11. Actuation piece 11
A is for pressing the push switch.

Further, in the knob body 11, a pair of arc-shaped elastic portions 12 and 13 having approximately three-fourths of the circumference are formed integrally with the knob body 11 at symmetrical positions with respect to the actuation piece 11a. Further, since the center of this arc is on a straight line in the operating direction, the elastic parts 12 and 13 are arranged above and below the knob body 11. This elastic part is indispensable for eliminating looseness of the knob body 11 and improving the feeling during operation.Also, in order to increase the stroke of the knob body 11, the elastic part is formed into a pair of approximately three-quarters circular arcs. The knob body 11 is molded integrally with the knob body 11 so as to be bent in a direction parallel to the operating direction of the knob body 11.
Furthermore, held parts 1 are provided at the tips of the elastic parts 12 and 13.
4 are integrally molded.

The held portion 14 is also formed into a flat plate shape, and a positioning pin 14a is formed on the surface opposite to the surface to which the elastic portions 12 and 13 are attached. As shown in FIG. 8, this held part 14 is
It fits into the hook 15a of the spacer 15, and the positioning pin 14a fits into the hole 16b provided in the spacer 15.

FIG. 8 is a sectional view showing a state in which the above-described knob body 11 and spacer 15 are attached to the panel 16. As is clear from FIG. 8, holes 16a are provided at predetermined locations on the panel 16, and the protrusions 15c of the spacer 15 are fitted into the holes 16a. This allows the spacer 15 to
6 and is installed.

At the lower end of the spacer 15, a hook 15a is integrally formed on the back side, that is, on the right side in FIG. The hook 15a is for attaching the knob main body 11 using the held part 14 with one touch, and is designed to fit the held part 14.
The spacer 15 has a shape that matches the held part 14, and a hole 16b is formed in the spacer 15 so that the positioning pin 14a of the held part 14 fits therein.

Further, on the back side of the spacer 15, a guide 15d is protruded near the hole. This guide 15d serves as a guide when the knob body 11 is moved in parallel by a push operation.

In this way, with the spacer 15 attached to the panel 16, the knob body 11 is attached to the spacer 15.
and the hole 16a of the panel 16, the held part 14 is fitted into the hook 15a, and the positioning pin 14a is fitted into the hole 16b.
The knob body 11 can be attached to the panel 16 at a predetermined position with one touch, and if the push switch 17 is arranged opposite the operating piece 11a of the knob body 11, the push switch 17 can be turned on and off. .

In this state, when the knob body 11 is pushed, the knob body 11 is guided by the guide 15d against the elasticity of the elastic parts 12 and 13, moves in a direction parallel to the operating direction, and the push switch 17 is activated by the operating piece 11a. Press to turn this push switch 17 on or off.

When the pressing force on the knob body 11 is released from this state, the knob body 11 returns to its original position due to the elasticity of the elastic parts 12 and 13. As a result, the push switch 17 is turned off or on, contrary to the above.

In this way, by pressing or releasing the pressure on the knob body 11, the push switch 17 can be turned on or off.
2 and 13 are formed into a pair of circular arcs with approximately three-quarters of the circumference, and since the centers of these circular arcs are on a straight line in the operating direction, they are placed above and below the knob body, making it easy to operate. The force is applied uniformly, and the knob is deformed uniformly without being concentrated at one point, canceling out vertical movement and tilting of the knob body, and deflecting in a direction parallel to the operating direction.

Incidentally, even when this invention is used in a tact switch, the gap around the knob body 11 can be reduced, so it is effective in terms of appearance and feeling.

As described above, according to the push knob device of this invention, the elastic parts 12 and 13 are integrally molded in an arc shape with approximately three-quarters of the circumference so as to bend in the direction parallel to the operating direction of the knob body. The elasticity of the knob body 11 allows the knob body 11 to return to the front, and since no coil spring is used, the cost can be reduced, and the gap around the knob body 11 can be reduced, resulting in a good appearance.

As described above, the push knob device of the present invention has the advantage that the knob body moves in a direction parallel to the operating direction, which reduces play and inclination of the knob, and can accommodate push switches with large strokes.

[Brief explanation of drawings]

1 to 3 are sectional views of different conventional push knobs, FIG. 4 a is a front view of a further different conventional push knob, and FIG. 4 b is a sectional view of a conventional push knob.
5 is a side view showing an embodiment of the push knob device of the invention, FIG. 6 is a rear view of the push knob device, FIG. 7 is a bottom view of the push knob device, and FIG. 8 is a side view of the push knob device of the invention. FIG. 3 is an enlarged sectional view showing a state in which the device is attached to a panel via a spacer. 11... Knob body, 11a... Actuation piece, 12,
13...Elastic part, 14...Holded part, 14a...
Positioning pin, 15... Spacer, 15a... Hook, 16a... Hole, 16b... Hole, 15c...
Projection, 15d... Guide, 16... Panel, 17
...Putsushiyuswitch.

Claims (1)

[Scope of utility model registration request] A push knob device that presses a push switch in a linear direction, the push knob device includes a knob body that has an operating piece that presses the push switch at one end and is slidably guided in the linear direction, and a part of the knob body. The knob body extends upward from the straight line direction and is arranged on the upper and lower sides of the knob body to form a substantially arc shape of approximately three-quarters of the circumference centered on one point on the straight line. A push knob device comprising an elastic part that bends in response to sliding, and a held part for fixing the tip of the elastic part to a panel or the like, and is integrally molded.