JP2545651B2 - switch - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanical switch for turning on / off or switching a switch by mechanically opening / closing a contact.

[0002]

2. Description of the Related Art FIG. 10 is a sectional view of a conventional switch,
When the handle 1 is swung left and right around the fulcrum 2,
The sliding piece 3 at the lower end slides to the left and right, and the seesaw swing plate 4 swings the seesaw to come into pressure contact with or separate from the individual contact pieces 5 and 6, whereby the intermediate common contact piece 7 and the individual contact piece 5 are separated. , 6 are turned on and off, and a switching operation is performed.

[0003]

Conventionally, when a toggle switch and a push button switch are used respectively, two switches must be mounted, which causes a problem of mounting space and separate operation parts. There is a problem that it is difficult to operate two switches at the same time.

A technical problem of the present invention is to realize a switch having two functions of a toggle switch and a push button switch, paying attention to such a problem.

[0005]

FIG. 1 is a cross-sectional view for explaining the basic principle of a switch according to the present invention, in which (a) is a normal state and (b) is an on state of an auxiliary switch. In the switching mechanism part, the drive shaft 8 swings around the spherical fulcrum part 2 supported by the support body 14 to perform the switching operation of the contact part. Same as the switch.

A drive shaft having one end as a handle and the other end as a spherical movable contact portion, and a switch mechanism portion for performing a switching operation by swinging an intermediate shaft slidably connected to the movable contact portion, An elastic body that repulsively urges the intermediate shaft of the switch mechanism portion and the drive shaft, a support body that loosely fits the movable contact portion while restricting the urging force of the elastic body, and a solid body supported by the support body. And a pair of fixed contact pieces arranged on both sides with respect to the movable contact portion or the intermediate shaft, and the handle is long enough to be held by a finger, and the elastic body is held while holding the handle. By pressing against the biasing force of the movable contact portion, the movable contact portion is brought into pressure contact with the pair of fixed contact pieces, so that the pair of fixed contact pieces is electrically connected through the movable contact portion. There is.

As described in claim 2, the switching mechanism part driven by the swing of the drive shaft 8 may have a seesaw swing mechanism or a slide mechanism as the portion for turning the contacts on and off. .

[0008]

In the switch of the present invention, since the drive shaft 8 swings around the spherical fulcrum portion 2, the switch of the present invention is similar to the conventional switch.
Switching operation is performed at the contact portion. As shown in (a) of FIG. 1, normally, the fixed contact pieces 10 and 11 are in the off state,
When the drive shaft 8 is moved downward as shown in (b), the movable contact portion 9 contacts both the fixed contact pieces 10 and 11, so that the fixed contact piece 1
Between 0 and 11 is turned on.

That is, in addition to the main switching mechanism that is driven by swinging the drive shaft 8 around the fulcrum portion 2, an auxiliary switch that performs a switching operation by the axial operation of the drive shaft 8 is provided.

The main switching mechanism, which is driven by the drive shaft 8 swinging around the fulcrum portion 2, may be a seesaw swing mechanism or a slide mechanism as in the conventional switching mechanism. , The conventional switching mechanism can be used as it is.

[0011]

EXAMPLES Next, examples of how the switch according to the present invention is actually embodied will be described. 2 and 3 are diagrams showing the relationship between the main switch section and the auxiliary switch section. 2 shows the auxiliary switch unit in the off state, and FIG. 3 shows the auxiliary switch unit in the on state.

The handle 1 for operating the drive shaft 8 is operated in a neutral state as shown in FIG. 2A, when it is operated to the left as shown by the solid line in FIG. 2C, and to the right as shown by the chain line. There are three types of cases. In the neutral state as shown in (a), the middle common contact piece 7 does not conduct to either of the left and right individual contact pieces 10 and 11, but when the handle 1 is operated to the left side as shown in (c), Intermediate shaft 12 inserted in drive shaft 8
The seesaw oscillating plate 4 and the individual contact piece 6 on the right side are turned on by the spring force of the compression coil spring 13 between the handle 1 and the handle 1. On the contrary, as shown by the chain line, when the handle 1 is operated to the right, the sliding piece 3 moves to the left, so that the seesaw oscillating plate 4 descends to the left and is brought into an ON state with the left individual contact piece 5.

As described above, in any state of the main switch portion, unless the handle 1 is pushed down, the handle 1 is kept pushed up by the spring force of the compression coil spring 13, so that the movable contact of the drive shaft 8 is kept. The portion 9 is separated from the fixed contact pieces 10 and 11. (B) is an enlarged view of the auxiliary switch section in (a), and (d) is an enlarged view of the auxiliary switch section in (c).

As is apparent from FIG. 3B, when the drive shaft 8 is in the neutral state, the movable contact portion 9 is located above the fixed contact pieces 10 and 11, so that any fixed contact piece 10 or I don't touch 11. Further, as shown in (d), when the drive shaft 8 is operated to one side, the movable contact portion 9 may or may not contact the fixed contact piece 11 on one side, but the fixed contact portion on the other side does not matter. Piece
Since it is not in contact with 10, the fixed contact pieces 10 and 11 are turned off.

On the other hand, when the handle 1 is pushed down as shown in FIG. 3, the fixed contact pieces 10 and 11 are turned on via the movable contact portion 9 regardless of the state of the main switch portion. That is, when the handle 1 is in a neutral state as shown in (a) and (b) and the handle 1 is pushed down against the spring force of the compression coil spring 13, the drive shaft 8 descends and the movable contact 9
Contacts the left and right fixed contact pieces 10, 11, so both fixed contact pieces 10,
Between 11 will be on.

When the handle 1 is operated to the left as in (c) and (d) and the handle 1 is pushed down, the movable contact portion 9 comes into contact with both the fixed contact pieces 10 and 11, so that it is turned on. . Similarly, when the handle 1 is pushed to the right and the handle 1 is pushed down, it is also turned on.

Next, when the support 14 of the drive shaft 8 is an insulator such as synthetic resin, the fixed contact pieces 10 and 11 of the conductor are directly inserted into and fixed to the support 14 as shown in the drawings. But support 14
When is made of metal, an insulator 15 is interposed between the fixed contact pieces 10 and 11 and the support 14 as shown in FIG.

Further, if the voltage / current flowing through the fixed contact pieces 10 and 11 of the auxiliary switch section is such that there is no risk of electric shock,
The handle 1 and the movable contact portion 9 may be formed of an integral metal, but if there is a risk of electric shock or noise or malfunction occurring when touching the handle 1, as shown in FIG.
Is made of an insulating material, and only the movable contact portion 9 of the drive shaft 8 is covered with a metal ring 16 so that only the movable contact portion 9 is made of a conductive material.

For a switch in which the switching mechanism is operated via the intermediate shaft 12 by swinging the drive shaft 8, the sliding contact piece 17 is slid left and right as shown in FIG. A switch having a slide structure is also known in which the common contact piece 7 is alternately turned on / off with the left and right individual contacts 5 and 6, but the present invention is also applicable to a switch having a main switching mechanism portion having a slide structure as described above. .

Further, as shown in FIG. 7, a corrugated operation button 18 is attached to the drive shaft 8, and the left end of the operation button 18 is indicated by an arrow a _1.
When pushed in the direction, the sliding piece 3 moves to the right and the right end is indicated by the arrow a ₂
When pushed in the direction, the sliding piece 3 is moved to the left,
It can also be applied to the wavy operation button method.

In the above description, when the drive shaft 8 is pushed down, the operation between the fixed contact pieces 10 and 11 of the auxiliary switch portion is turned on, but in the embodiment of FIG. Fixed contact pieces 19, 20 are provided. In this configuration, the movable contact 9 is normally pressed by the compression coil spring 13 against the fixed contact pieces 19 and 20, and both fixed contact pieces 19 and 20 are in the ON state, but when the drive shaft 8 is pushed down, the movable contact piece 9 is moved. Part 9 is both fixed contact pieces
Since it is separated from 19 and 20, it is turned off.

FIG. 9 shows an example of using the switch of the present invention.
The fixed contact pieces 10 and 11 of the auxiliary switch portions of the plurality of switches SW ₁ , SW ₂ and SW ₃ are used for displaying means a such as lamps and LEDs,
It is connected to the power source E via b and c.

If it is uncomfortable to operate the switches SW ₁ , SW ₂ and SW ₃ carelessly, connect a relay or the like to the fixed contact pieces 10 and 11 and connect the main switch section through the relay contacts. If it is connected, it can be used so that the switching operation of the main switch portion functions only when the handle 1 is pushed down and the relay contact is closed.

Needless to say, the main switch and the auxiliary switch section can be used independently by connecting them to independent circuits.

[0025]

As described above, according to the present invention, in the switch having the structure in which the drive shaft 8 for driving the switching mechanism section swings around the fulcrum, the drive shaft 8 can be reciprocated in the axial direction. The movable contact portion 9 provided on the drive shaft 8 is configured to turn on / off between the fixed contact pieces 10 and 11 (or between the fixed contact pieces 19 and 20).

Therefore, the fixed contact pieces 10 and 11 and the movable contact portion 9 are
By connecting the auxiliary switch section consisting of to the means for confirmation and safety maintenance of the main switch section, various functions related to the switch can be realized.

[Brief description of drawings]

FIG. 1 is a cross-sectional view illustrating the basic principle of a switch according to the present invention.

FIG. 2 is a diagram showing a relationship between a main switch section and an auxiliary switch section (the auxiliary switch section is in an off state).

FIG. 3 is a diagram showing a relationship between a main switch unit and an auxiliary switch unit (an auxiliary switch unit is in an ON state).

FIG. 4 is a cross-sectional view of essential parts showing an embodiment in which a fixed contact piece is insulated.

FIG. 5 is a cross-sectional view of essential parts showing an embodiment in which a handle is made of an insulator.

FIG. 6 is a cross-sectional view showing an example in which the switching mechanism is applied to a switch having a slide structure.

FIG. 7 is a cross-sectional view showing an example implemented in a switch having a corrugated operation button.

FIG. 8 is an example of a switch that is turned off when the handle is pushed down.

FIG. 9 is a circuit diagram showing a usage example of the switch of the present invention.

FIG. 10 is a cross-sectional view of a conventional switch.

[Explanation of symbols]

 1 Handle 2 Support point 3 Sliding piece 4 Seesaw swing plate 5,6 Individual contact 7 Common contact piece 8 Drive shaft 9 Moving contact part 10,11 Fixed contact piece 12 Intermediate shaft 13 Compression coil spring 14 Support 15 Insulator 16 Metal Ring 17 Sliding contact 18 Corrugated operation button 19,20 Fixed contact

Claims (2)

(57) [Claims] 1. A movable contact in which one end is a handle and the other end is spherical.
Of the drive shaft and the intermediate shaft slidably connected to the movable contact part
The switch mechanism section that performs the switching operation with, and the intermediate shaft of the switch mechanism section and the drive shaft repulsively
An elastic body to be biased and the movable contact portion is loosely fitted while regulating the biasing force of this elastic body.
The support and the movable contact part or the middle fixed by this support.
The handle has a pair of fixed contact pieces arranged on both sides of the shaft, and the handle is long enough to be held by fingers.
While holding this handle, resist the urging force of the elastic body.
By pressing, the movable contact part will
By pressing, the pair of fixed contact pieces will move the movable contact point.
A switch having a structure in which it is electrically conducted through a switch. 2. The switch according to claim 1, wherein the switch mechanism portion has a seesaw swing mechanism or a slide mechanism at a portion for turning the contact on and off.