JP2554447Y2 - Switch device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a switch device, and more particularly, to an improvement in a switch device in which a switch knob is inserted into a concave guide portion formed in a base and slides in the guide direction. It is.

[0002]

2. Description of the Related Art FIGS. 6 to 8 are sectional views showing a conventional example of a switch device. The switch device shown in FIG. 6 is provided with a concave guide portion 1c in a linear direction on a base 1,
A switch knob 2 is movably inserted into the guide portion 1c. The switch contact piece 3 is fixed to a lower portion of the switch knob 2 by a fixing pin 4. The tip of the switch contact piece 3 is connected to a base 5, and a conductive pattern such as a variable resistor (not shown) is provided on the surface of the base 5.

In this switch device, a switch knob 2 is slid along a guide portion 1c of a base 1, and an end of the switch knob 2 contacts a wall surface 1a of the guide portion 1c located at a left slide end in FIG. When touched, the switch contact piece 3
, The switch contact piece 3 and the base 5
Electrical connection to a peripheral device (not shown) connected to the conductive pattern.

[0004]

However, in the switch device shown in FIG. 6, when dust 6 enters the slide surface 1b of the guide portion 1c and the guide portion 1c is previously formed with a deep depression, When the wall surface 1a of the guide portion 1c is perpendicular to the slide surface 1b, it is difficult to remove the dust 6 on the slide surface 1b from the guide portion 1c even if a cotton swab or an elongated brush is used.

In order to solve this problem, as shown in FIG. 7 (a), the wall surface 1a of the guide portion 1c has a sliding surface 1b.
May be formed on an inclined surface forming an obtuse angle θ. In this way, even if the recess of the guide portion 1c is deep, the dust 6 on the slide surface 1b can be easily removed along the slope 1a by a cotton swab or a long and thin brush. I'm done.

However, after the dust 6 is removed, the guide 1
When the switch knob 2 is slid toward the slope 1a of FIG. 7C, a space 7 remains between the slope 1a and the end face 2a of the switch knob 2 facing the slope 1a, as shown in FIG. 7B. If the dust 6 enters the space 7, the dust 6 accumulates at a corner between the slope 1a of the guide portion 1c and the end face 2a of the switch knob 2, so that it becomes difficult to remove the dust.

In order not to leave the space 7 shown in FIG. 7B, the end face 2a of the switch knob 2 is
8C, the slope 1a of the guide portion 1c is formed on an inclined surface which forms an acute angle with respect to the slide surface 1b of the guide portion 1c.
Should be covered. The acute angle is two right angles (180
Degree) minus the obtuse angle θ. In this way, the space 7 is not left, and no dust 6 enters the space 7.

On the other hand, when the switch knob 2 is moved in the direction of the other slide end and retracted, as shown in FIG. 8B, the slope 1a of the guide portion 1c and the slope 2 of the switch knob 2 are moved.
A space 7 is created between the space 7 and the space a. When dust 6 enters the space 7, dust 6 near the slope 1a on the slide surface 1b can be easily removed along the slope 1a by the above-mentioned cotton swab or elongated brush. Slope 2
For dust 6 near a, the space 7 becomes narrower,
It is difficult to remove.

When the switch knob 2 is slid while leaving the above-mentioned hard-to-remove dust 6, the hard dust 6 is pushed by the slope 2 a of the switch knob 2, and FIG.
As shown in (b), it is sandwiched between the slopes 1a and 2a. Therefore, the slide amount of the switch knob 2 cannot be maintained at a predetermined value.

When the dust 6 is soft dust such as an eraser residue, the slope 2a of the switch knob 2 is formed smaller than 90 degrees with respect to the slide surface 1b of the guide 1c. Slide surface 1 of guide portion 1c
b and the slide surface 2b of the switch knob 2, the operability of the switch knob 2 is reduced.

The present invention has been made in view of such a problem, and makes it easy to remove dust as much as possible. For the remaining dust, the slide amount of the switch knob is maintained at a predetermined value. It is an object of the present invention to provide a switch device in which the operability of the switch knob is not reduced.

[0012]

In order to solve the above problems, a switch device according to the present invention has a base (1) having a concave guide portion (1c) formed in a linear direction or along a circumferential direction. And a switch knob (2) inserted into the guide portion of the base and sliding along the guide direction, wherein the base (1) is a wall surface located at at least one end of the guide portion. Is formed on an inclined surface (1a) that forms an obtuse angle with respect to the bottom surface of the guide portion, and the switch knob (2) attaches a wall surface (2a) facing the inclined surface of the guide portion to the bottom surface of the base. The obtuse angle is formed on a slope having an angle smaller than a value obtained by subtracting 180 degrees, and a portion (2c) of the slope near the bottom surface of the guide portion is formed with respect to the bottom surface (1b). More than 90 degrees It was formed to so that. The switchno
The wall (2) is a wall facing the slope of the guide portion (1c).
The bottom side edge of the surface is 90 degrees or less with respect to the bottom surface (1b).
It was formed so as to be on top.

Further, the present invention is characterized in that the wall surface of the switch knob facing the inclined surface of the guide portion is drawn by pulling the wall surface of the switch knob from above the guide portion to the bottom surface of the guide portion. An inclined surface (2a) having an angle equal to or smaller than the value thereof, a horizontal surface (2d) parallel or substantially parallel to the bottom surface of the guide portion, and a vertical surface substantially perpendicular or substantially perpendicular to the bottom surface of the guide portion. It can be characterized in that they are sequentially formed on the surface (2c).

Further, the wall surface of the switch knob facing the inclined surface of the guide portion may be formed along a bottom surface from above the guide portion with a horizontal plane (2d) parallel or substantially parallel to the bottom surface of the guide portion. And a vertical surface (2c) perpendicular or substantially perpendicular to the bottom surface of the guide portion.

[0015]

According to the present invention, when dirt enters the space created between the slope (1a) and the switch knob (2), the slope (1a) on the slide surface (1b) of the guide portion (1c). ) It becomes easy to remove dust 6 near the slope (1a).

Further, even if the dust located at the end (2c) near the bottom surface of the guide portion of the switch knob (2) is not removed and left, it is possible to slide the switch knob (2). Since the end (2c) is formed at an angle of 90 degrees or more with respect to the slide surface (1b), dust is not drawn between the slide surface (1b) and the slide surface (2b). The operability of the switch knob (2) is not reduced.

Further, when the switch knob (2) slides, dust is pushed by the end (2c) of the switch knob (2) and is moved toward the slope (1a) of the guide portion (1c). Even if the switch knob (2) is moved to the slide end, the slope (2a) of the switch knob (2) is smaller than a value obtained by subtracting the obtuse angle from the bottom surface of the guide portion (1c) by less than 180 degrees. Due to the angle formed, a space is generated between the slope (1a) of the guide part (1c) and the slope (2a) of the switch knob (2), and debris accumulates there. ) Can be maintained at a predetermined slide amount. As described above, according to the present invention, dust can be easily removed as much as possible, and the operability of the switch knob and the predetermined sliding amount can be maintained.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings and the like. FIG. 1 is a sectional view showing a switch device according to a first embodiment of the present invention. In each of the embodiments described below, the same reference numerals are given to portions that perform the same functions as those of the above-described conventional example, and redundant description will be omitted.

In FIG. 1, in the switch device of the first embodiment, a concave guide portion 1c in a linear direction is provided on a base 1 (see FIG. 1C), and the left end wall surface of the guide portion 1c has a bottom surface. Slope 1 that forms an obtuse angle with respect to the slide surface 1b
a.

The switch knob 2 is connected to the guide 1c of the base 1.
Is movably inserted into This switch knob 2
The wall surface of the guide portion 1c facing the inclined surface 1a is formed as an inclined surface 2a that forms an obtuse angle with respect to the bottom surface of the base 1 at an angle smaller than a value obtained by subtracting 180 degrees. The end 2c of the slope 2a near the bottom surface of the guide portion 1c is formed so as to be at least 90 degrees (here, approximately 90 degrees) with respect to the bottom surface 1b. The reason why the end 2c is set to 90 degrees or more is that when the switch knob 2 is slid, the dust 6 is removed from the sliding surface 1b of the concave guide portion 1c and the switch knob 2.
In order not to be drawn in between

Next, the operation of the switch device according to the first embodiment will be described in relation to the removal of dust 6. FIG. 1 (a)
When the switch knob 2 is in contact with the right end of the base 1 as shown in FIG.
A space 7 is formed between the inclined surface 1a of the concave guide portion 1c provided in the switch knob 2 and the switch knob 2. Garbage 6 in this space 7
, Dust 6 near the slope 1a on the slide surface 1b of the guide portion 1c may be removed along the slope 1a with the above-described swab or slender brush.

As shown in FIG. 1B, the switch knob 2
Is slid to the left along the guide portion 1c of the base 1 and the switch is turned on in a state where the switch is in contact with the left end. At this time, it is assumed that there is dust 6 on the slide surface 1a located near the end 2c of the switch knob 2.

Assuming that the switch knob 2 is slid while the dust 6 remains without being removed, the end 2b of the switch knob 2 is connected to the sliding surface 1b of the guide portion 1c.
, The dust 6 is not drawn into between the slide surface 1b of the guide portion 1c and the slide surface 2b of the switch knob 2 even if the dust 6 is soft. Therefore, the operability of the switch knob 2 is not reduced.

In addition, whether the dust 6 is soft or hard, the dust 6 is pushed by the end 2c of the switch knob 2 by the sliding of the switch knob 2, and is moved toward the slope 1a of the guide portion 1c. . At this time, when the switch knob 2 is moved to the left slide end in FIG.
Is formed at an angle smaller than a value obtained by subtracting the obtuse angle by less than 180 degrees with respect to the bottom surface of the guide portion 1c, so that the slope 1a of the guide portion 1c and the slope 2a of the switch knob 2 are formed. Creates a space 7 Since the dust 6 accumulates in the space 7, the slide amount of the switch knob 2 can be kept at a predetermined value.

FIG. 2 is a sectional view showing a switch device according to a second embodiment of the present invention. In the switch device according to the second embodiment, the wall surface 2a of the switch knob 2 facing the slope 1a of the base 1 forms the acute angle with the slide surface 1b on the bottom surface of the base 1, as in the first embodiment. It is formed on the slope 2a. In this embodiment, the switch knob 2 is
end 2 near the land surface 1b on the bottom surface of the guide portion 1c of FIG.
c is an arc so that the tangent is 90 degrees or more with respect to the slide surface 1b.

FIG. 3 is a sectional view showing a switch device according to a third embodiment of the present invention. Also in the switch device according to the third embodiment, the slope 2a of the switch knob 2 is at an acute angle to the slide surface 1b on the bottom surface of the base 1, as in the first embodiment. In this embodiment, the switch knob 2 is
c with respect to the slide surface 1b by 90 degrees or more (here,
20 degrees).

FIG. 4 is a sectional view showing a switch device according to a fourth embodiment of the present invention. In the fourth embodiment, the end surface of the switch knob 2 facing the slope 1a of the guide portion 1c is
The bottom surface 1 extends along the bottom surface 1b from above the guide portion 1c.
b, an inclined surface 2a having an angle equal to a value obtained by subtracting the obtuse angle θ from two right angles (180 degrees), a horizontal surface 2d parallel to the bottom surface 1b, and a vertical surface 2c perpendicular to the bottom surface 1b.
They are formed sequentially. Even when the switch knob 2 is moved toward the inclined surface 1a of the guide portion 1c, a space 7 is formed between the horizontal surface 2d and the vertical surface 2c and the inclined surface 1a as shown in FIG. Since the dust 6 enters the switch knob 2, the sliding amount of the switch knob 2 can be kept constant.

FIG. 5 is a sectional view showing a switch device according to a fifth embodiment of the present invention. In the fifth embodiment, the end surface of the switch knob 2 facing the guide portion 1c and the slope 1a is
The bottom surface 1 extends along the bottom surface 1b from above the guide portion 1c.
A horizontal surface 2d parallel to b and a vertical surface 2c perpendicular to the bottom surface 1b are sequentially formed. Even if the switch knob 2 is moved toward the inclined surface 1a of the guide portion 1c, FIG.
, The horizontal plane 2d and the vertical plane 2c, and the slope 1
A space 7 is formed between the switch knob 2a and the dust 6 entering the space 7, so that the sliding amount of the switch knob 2 can be kept constant. In this embodiment, the space 7 can be made large.

In the fifth embodiment, as shown in FIG. 5C, the concave guide 1c formed on the base 1 is a part of an arc, and the switch knob 2 is 1
Slide along the circumferential direction of c. The above-described first to fourth embodiments may also be provided in such a guide portion 1a.

[0030]

[Effects of the Invention] As described in detail above, according to the present invention, since the guide portion is provided with the slope, it is easy to remove dust. In addition, since the end of the switch knob on the guide portion side is at least 90 degrees, dust can be scraped off and removed between the sliding surface of the guide portion and the bottom surface of the switch knob. The slide amount of the knob can be maintained at a predetermined value, and the operability of the switch knob is not reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a switch device according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing a switch device according to a second embodiment of the present invention.

FIG. 3 is a cross-sectional view illustrating a switch device according to a third embodiment of the present invention.

FIG. 4 is a sectional view showing a switch device according to a fourth embodiment of the present invention.

FIG. 5 is a cross-sectional view illustrating a switch device according to a fifth embodiment of the present invention.

FIG. 6 is a sectional view showing a conventional example of a switch device.

FIG. 7 is a sectional view showing another conventional example of the switch device.

FIG. 8 is a sectional view showing still another conventional example of the switch device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 1a Slope 1b Sliding surface 1c Guide part 2 Switch knob 2a Slope 2b Sliding surface 2c End part 3 Switch piece 4 Fixing pin 6 Dust 7 Space

Claims (4)

(57) [Scope of request for utility model registration] 1. A switch device comprising: a base having a concave guide portion formed in a linear direction or a circumferential direction; and a switch knob inserted into the guide portion of the base and slidably moved in the guide direction. In the base, the wall surface located at at least one end of the guide portion is formed on an inclined surface that forms an obtuse angle with respect to the bottom surface of the guide portion, and the switch knob faces the inclined surface of the guide portion. The size of the oblique angle with respect to the bottom surface of the
A switch device formed on a slope having an angle smaller than a value subtracted from 80 degrees. 2. The switch knob according to claim 1, further comprising:
The bottom side end of the wall facing the surface is 9
Claims: formed so that it may become 0 degree or more
2. The switch device according to claim 1. 3. A value equal to or less than the value obtained by pulling the wall surface of the switch knob facing the slope of the guide portion from above the guide portion to the bottom surface of the guide portion along the bottom surface. A slope having an angle smaller than the value, a horizontal plane parallel or substantially parallel to the bottom surface of the guide portion, and a vertical surface perpendicular or substantially perpendicular to the bottom surface of the guide portion. The switch device according to claim 1, wherein 4. A horizontal surface parallel or substantially parallel to the bottom surface of the guide portion, wherein the wall surface of the switch knob facing the inclined surface of the guide portion extends along a bottom surface from above the guide portion, 2. The switch device according to claim 1, wherein the switch device is formed sequentially on a vertical surface perpendicular or substantially perpendicular to the bottom surface of the portion.