JPH069408Y2 - Seesaw switch structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Outline] In electrical equipment, for example, a shaft fixed to a front plate to which a seesaw switch is attached by a spacer, and a fitting portion formed on an operation button of the seesaw switch and fitted to the shaft. In the seesaw switch structure having the above, the structure of the switch fulcrum is simplified and the area occupied by the switch can be reduced.

[Industrial application field]

The present invention relates to a structure of a seesaw switch that selectively turns on and off contacts.

For example, a large number of seesaw switches are provided on the front surface of the electrical equipment so that the user can freely select various functions of the electrical equipment such as an audio device.

[Conventional technology]

FIG. 4 is a perspective view showing the basic structure of a general seesaw switch. Here, a single seesaw switch 1 having two upper and lower contacts 12, 12 'is shown as a typical example.
The structure of the fulcrum 10 is shown in a simplified manner.

In FIG. 4, the main part of the seesaw switch 1 is two contacts 12, 1 for turning on and off fixed to a member 8 such as a substrate.
2'and an operation button 11 for pressing the contacts 12, 12 '
Composed of and. Further, on the operation surface of the operation button 11, each function of the seesaw switch 1 is displayed by characters or the like (AM / FM in FIG. 4).
We are trying to use 1 effectively. If the user presses one of the upper and lower parts of the operation button 11, for example, the upper part with a finger or the like, one pressing part 1 with the fulcrum 10 as the center.
3 moves downward, the contact 12 is turned on, and the switch function (AM in this case) selected by the user is executed.

Next, the structure of the seesaw switch 1 when the seesaw switch 1 is used by being attached to the front surface of an electrical component will be described. Normally, as shown in FIG. 5, a plurality of seesaw switches 1 having various functions are attached to the front plate 2 of the front part of the electrical component, but here, a state in which only a single seesaw switch 1 is attached is shown. A typical example will be described.

6A and 6B are views showing a first example of a conventional seesaw switch structure, and FIG. 6A is a front view thereof, and FIG.
FIG. 6B is a sectional view taken along line EE of FIG. 6A. In general, an opaque coating film is formed on the operation surface of the operation button 11 except for the characters (FIG. 8B). However, in FIG. 6A, the structure of the fulcrum 10 can be clearly understood. The operation surface is said to be transparent. Further, the description of the pressing portions 13 and 13 'and the contacts 12 and 12' is omitted.

Here, the pair of convex portions 1 is provided on a part of the back surface of the operation button 11.
4, a fulcrum 10 is formed by providing a part of the light guide plate 5 for character illumination with a pair of concave portions 6 that engage with the convex portions 14. That is, the contact point between the convex portion 14 and the concave portion 6 on the back surface of the operation button 11 is the fulcrum 10.
I am trying.

7A and 7B are diagrams showing a second example of the conventional seesaw switch structure, and FIG. 7A is a front view thereof, and FIG.
7B is a sectional view taken along line FF in FIG. 7A. Note that the operation surface of the operation button 11 is also transparent in FIG. 7A.

Here, first, the holes 15 are formed on both sides of the central portion of the operation button 11.
A welding piece 16 having the above is provided, and the projecting portion 20 (FIG. 7B) formed on the front plate 2 is passed through the hole 15. After that, if the protruding portion 20 is welded and the welding piece 16 is fixed to the front plate 2, a fulcrum 10 (FIG. 7B) is formed at the boundary between the operation button 11 and the welding piece 16. Operation button 1 above
When 1 is pressed, the vicinity of the fulcrum 10 of the welding piece 16 is elastically deformed by twisting, and the contacts are turned on and off.

8A and 8B are views showing a third example of the conventional seesaw switch structure, and FIG. 8A is its front view and FIG.
FIG. 8B is a sectional view taken along line GG of FIG. 8A. Note that, here, the description of the light guide plate 5 (FIG. 7A or FIG. 7B) is omitted. Further, in FIG. 8B, an opaque coating film 18, which has not been described so far, is illustrated. The operation button 11 of the seesaw switch 1 is generally light-guided, and if a character for switch function display is formed on the coating film 18 by laser marking or the like, only this character portion is displayed by the operation surface illumination. become.

In this case, the sliding parts 1 are provided on both sides of the central part of the operation button 11.
7 is provided, and a fulcrum 10 (FIG. 8B) is formed at a portion where the sliding portion 17 contacts the inside of the front plate 2. Further, the sliding member 17 on the member 8 (FIG. 8B) such as the substrate is arranged so that the operation button 11 can be pressed without difficulty.
The protrusion 9 for sliding (FIG. 8B) is provided at the portion that comes into contact with.

[Problems to be solved by the device]

As described above, conventionally, the fulcrums 10 of the seesaw switch 1 are formed on a part of the light guide plate 5 or both sides of the central portion of the operation button 11. Therefore, the following inconvenience occurs.

In the conventional first example (FIGS. 6A and 6B),
Since the fulcrum 10 is formed on a part of the light guide plate 5, the light guide plate 5 cannot have a large area. As a result, the characters on the entire operation surface may not be sufficiently illuminated. In addition, the structure of the fulcrum 10 becomes complicated, and man-hours are required to assemble the switch.

In the second conventional example (FIGS. 7A and 7B),
The area of the welded portion 16 must be sufficiently large so that the welded portion 16 can be surely welded to the front plate 2 and elastically deformed easily. As a result, the area occupied by one seesaw switch 1 becomes large, and the number of seesaw switches 1 mounted on the front plate 2 is limited. In particular, in the case of electric components for vehicles, the number of seesaw switches 1 to be mounted tends to be more and more limited because of limited space.

In the third conventional example (FIGS. 8A and 8B),
Coating film 18 near the fulcrum 10 on the surface of the operation button 11
Since it constantly slides, a part of the coating film 18 is easily peeled off.

As a result, the illumination light from the light guide plate 5 may leak and the characters may be difficult to see. In addition, the member 8 of the operation button 11
Since the side surface also slides, rattling may occur at the fulcrum 10.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a seesaw switch structure capable of reducing the occupied area of the switch with a simple configuration.

[Means for Solving the Problems]

The seesaw switch structure of the present invention includes a shaft fixed to the front plate 2 by a spacer, and a fitting portion formed on the operation button 11 of the seesaw switch 1 and fitted to the shaft.

[Action]

In the present invention, the contact point between the shaft and the fitting portion is the fulcrum 10.
Has become. Here, if the operation button 11 of the seesaw switch 1 is pressed, the operation button 11 can be easily rotated in the vertical direction about the fulcrum 10.

Thus, according to the present invention, it is possible to provide a seesaw switch structure with a simple structure and less rattling. Further, since it is not necessary to take an extra space for welding or the like, the area occupied by the switch can be reduced.

〔Example〕

1A, 1B and 1C are views showing an embodiment of the present invention, wherein FIG. 1A is a front view thereof, FIG. 1B is a sectional view taken along line BB of FIG. 1A and FIG. C- in FIG. 1A
It is C sectional drawing. The same components as those described above are designated by the same reference numerals. Further, the description of the light guide plate 5 (FIG. 7A or FIG. 7B) is omitted.

Here, the shaft 3 made of metal or the like is provided near the back surface of the operation button 11. This shaft 3 is the front plate 2
And a member 8 on its back, for example, a spacer 7, which is sandwiched and fixed to a substrate and has high elasticity, is inserted and fixed. Further, a fitting portion 4 for fitting with the shaft 3 is formed on the back surface of the operation button 11. If the cracked claw-shaped resin is used as the fitting portion 4, the fitting portion 4 is
Can be easily fitted into the shaft 3.

In this way, the fulcrum 10 is formed only by fitting the fitting portion 4 into the shaft 3 fixed to the front plate 2, so that the structure of the fulcrum 10 of the seesaw switch 1 is simpler than in the conventional case, and the assembly is easy to assemble. The number of man-hours is reduced and rattling of the fulcrum 10 is reduced. Moreover, since the surface of the operation button 11, that is, the surface on which the coating film 18 is formed is not the fulcrum 10, there is no risk of light leakage due to peeling of the coating film 18. Further, since the fitting portion 4 is formed only on a part of the back surface of the operation button 11, characters on the operation surface are not sufficiently illuminated due to the fitting portion 4, and the area occupied by the switch increases. There is nothing to do.

2A and 2B are views showing a specific example of an embodiment of the present invention, FIG. 2A is a front view thereof, and FIG. 2B is a second view thereof.
It is the DD sectional view of FIG. Here, a case will be described in which a plurality of seesaw switches 1 of the present invention are mounted side by side on the front plate 2. However, in FIGS. 2A and 2B, only two of the seesaw switches 1 are illustrated.

The shaft 3 has a plurality of seesaw switches 1 and a fitting portion 4
It is extended by that number so that everything is fixed through. Further, both ends of the shaft 3 are fixed to support plates 21 formed on the front plate 2. in this case,
In order to prevent the shaft 3 from moving due to the pressing operation of the seesaw switch 1, the spacer 3 is inserted into the shaft 3 so as to have a distance between the front plate 2 and a member 8, for example, a substrate. As shown in FIG. 3, the spacer 7 has a circular shape so that the assembling can be carried out quickly, and is composed of a slightly elastic member such as resin or rubber. It is designed to be securely fixed between the two. The spacer 7 is preferably provided between the seesaw switches. If these seesaw switch 1 and spacer 7 are fixed to the shaft 3 one after another,
A desired number of seesaw switches 1 can be easily attached to the front plate 2. In addition, the area of the spacer 7 is smaller than that of the conventional welding piece 16 (Fig. 7A or 7B) and the sliding portion 17 (Fig. 8A or 8B), so that the entire seesaw switch can be made compact. The electrical components can be miniaturized. Although the claw-shaped fitting part 4 has been used so far, it is also possible to use a hollow circular shape similar to the spacer 7.

[Effect of device]

As described above, according to the present invention, it is possible to realize a seesaw switch having a simple configuration and a good operation feeling with less rattling. In addition, since it is not necessary to take an extra space for welding or the like, the area occupied by the switch can be reduced. This is particularly effective when applied to in-vehicle electrical equipment whose space is limited.

[Brief description of drawings]

1A is a front view showing an embodiment of the present invention, FIG. 1B is a sectional view taken along the line BB of FIG. 1A, FIG. 1C is a sectional view taken along the line CC of FIG. 1A, and FIG. A front view showing a specific example of one embodiment, FIG. 2B is a sectional view taken along the line DD of FIG. 2A, FIG. 3 is a partial side view showing the structure of a spacer, and FIG. 4 shows the basic structure of a general seesaw switch. FIG. 5 is a front view showing a state in which a plurality of seesaw switches are attached to a front plate, FIG. 6A is a front view showing a first example of a conventional seesaw switch structure, and FIG. 6B is a view shown in FIG. 6A. FIG. 7A is a front view showing a second example of a conventional seesaw switch structure, FIG. 7B is a FF cross section of FIG. 7A, and FIG. 8A is a conventional seesaw switch structure. The front view which shows 3 examples, FIG. 8B is GG sectional drawing of FIG. 8A. 1 ... Seesaw switch, 2 ... Front plate, 3 ... Shaft, 4 ... Fitting part, 7 ... Spacer, 11 ... Operation button, 21 ... Support plate.

Claims (1)

[Scope of utility model registration request] 1. A seesaw switch structure in which a seesaw switch (1) is attached to a front plate (2), and is sandwiched and fixed by the front plate (2) and a member (8) at the back of the front plate (2). A spacer (7) having a holding portion, and a shaft (3) fixed to the holding portion of the spacer (7)
And a fitting portion (4) formed on the operation button (11) of the seesaw switch (1) and fitted with the shaft (3).