JPH01265421A - Switch - Google Patents

Abstract

PURPOSE:To make it possible to confirm ON, OFF of a load in the state, in which a cover is removed, by engaging free-rockingly a supporting projection to become a rocking axis projected on the side of a handle with a supporting recess provided on a support frame fixed to a body. CONSTITUTION:The upper end of a support projection 30a projected on both sides of a handle 30 is taperingly formed for being free-rockingly engaged with the inside of a support recess 31b formed on the inner peripheral surface of a pair of mutually facing sidewalls of a support frame 31. Thereby, at the time of connection a decorative cover 15 is removed and a cover 12 is also removed from the body and the terminal plates 21 and 22 are exposed for performing the connection and the handle 30 is held by the support frame 31 fixed to the body 11 so as not to fall off so that ON, OFF of load can be tried out while operating the handle 30 in the state as it is and the wrong connection by any chance can be immediately corrected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a so-called wave-type switch in which a handle is swingably disposed with respect to a housing.

[Prior Art] Generally, in this type of wave type switch, a housing is attached to a wall surface, etc., and has a body having a side point portion, and
It has an oval shape with a cover that fits over the body, and the handle is exposed through an opening window formed in the cover. The handle is swingable relative to the housing by engaging support protrusions formed on the side surfaces with support recesses formed on the inner circumferential surface of the cover.

[Problem to be Solved by the Invention 1] In the above conventional configuration, when wiring is performed, when the housing is removed, the handle is also removed, so if the cover is not attached after wiring, the load will be turned on and off by operating the handle. It was not possible to confirm whether this was the case. That is, if you notice a mistake in wiring when you attach the cover and check the operating state, you have to remove the cover again and reconnect the wires, which makes the work cumbersome.

In addition, although the contact part is arranged in the body, the only insulating wall surrounding the side periphery of the contact part is the cover, so when an arc is generated due to the opening of the contact part, the scale of the arc is In some cases, the light could pass through the cover, which was dangerous.

The purpose of the present invention is to solve the above-mentioned problem, α, by making it possible to operate the handle with the cover removed from the body, making wiring work easier, and opening the contact part. The purpose of this invention is to provide a switch that can shield arcs that sometimes occur.

[Hands for solving 9 problems 521 In order to achieve the above object, the present invention provides a body with a support frame having a support recess in which a support protrusion protruding from the side surface of the handle engages in a swingable manner. It is fixed.

Furthermore, in order to shield arcs, the support frame is placed at a position that surrounds the contact portion together with the body.

[Function] According to the above configuration, the handle is held by the support frame fixed to the body, so the handle can be operated even if the cover is removed. You can check that it is off.

Furthermore, since the support frame surrounds the contact portion together with the body, the arc generated when the contact portion is opened is shielded by the support frame and can be prevented from passing through the cover.

[Example] As shown in FIG. 11 and cover 12 are both made of thermosetting synthetic resin. The body 11 is formed into a rectangular shape, and mounting holes 11a are formed at each corner on one diagonal line, respectively.
It is fixed to a wall surface or the like by a mounting screw inserted through this mounting hole 11a. An assembly hole 11b is formed at each corner on the other diagonal of the body 11, and the cover 12 is screwed into the assembly hole 11b through the rectangular insertion hole 12a of the cover 12, which is formed into a rectangular shape so as to match the body 11. The body 11 and the cover 12 are connected by an assembly screw 13.

A pair of terminal plates 21 and 22 are fixed on the body 11. Each terminal plate 21, 22 has a fixing piece 21a, 22 inserted into a fixing hole formed in the body 11, respectively.
Both terminal plates 21 and 22 are fixed to the body 11 by inserting the fixing pieces 21a and 22a into the fixing holes 11c and caulking them.

Further, the position is also fixed by a lip 11d formed on the body 11. Both terminal plates 21 and 22 have terminal pieces 21b and 22b, respectively, and terminal screws 23 are screwed into the terminal pieces 21b and 22b to form threaded terminals.

An electric wire connected to this terminal is inserted into an introduction hole 14 formed in one place of the body 11. Furthermore, one terminal board 2
A fixed contact piece 21c having a fixed contact 25 is coupled to the terminal plate 1, and a support piece 22d having a fulcrum protrusion 22c is coupled to the other terminal plate 22. The oscillator 2 is mounted on the fulcrum protrusion 22c.
6 is arranged to be swingable, and when the oscillator 26 moves into and out of contact with the fixed contact 25, the space between both terminal plates 21 and 22 is opened and closed. The rocker 26 is formed in a substantially U-shape that is open upward in FIG.

A support frame 31 is fixed on the body 11 to support the handle 30. The support frame 31 is made of thermoplastic synthetic resin, and is shaped like a rectangular tube having vertical axes in FIG. 1.

An engagement hook 31a is provided protruding from the lower #1 green portion of the support frame 31, and this engagement hook 31a is adapted to engage with an attachment hole lie formed in the body 11. That is, the support frame 31 is press-fitted into the body 11 from above, thereby being engaged with and fixed to the body 11. Support recesses 31b are formed in the inner peripheral surfaces of a pair of opposing side walls of the support frame 31, respectively.
As shown in FIG. 2, 1b has a narrow upper end. On the other hand, support protrusions 30 are provided on both sides of the handle 30.
The upper end of the support protrusion 30a is tapered and is pivotably engaged in the support recess 31b.

The handle 30 has four spring seats (not shown) that are open downward, and the upper end of a reversing spring 32 made of a coil spring is housed in the spring seats. Reversal spring 32
The lower end of the handle 30 is inserted into the rocker 26, and when the handle 30 is rocked around the axis connecting both the support protrusions 30a, the rocker 26 is rocked by a snap action via the reversing spring 32. That's what I do. An indicator lamp 33 and a printed circuit board 34 on which a current limiting resistor is mounted are arranged in the lower part of the handle 30, and the indicator lamp 33 connects to both terminal plates 21, 22
connected so that it is inserted between them. A transparent window 30b is formed on the upper surface of the handle 30 to correspond to the indicator lamp 33, and a lamp cover 35 is attached to the transparent window 30b.

The indicator lamp 33 is connected so that it lights up when the contact part is in the rfR polarity, and turns off when the contact part is in the closed polarity.

The cover 12 has an opening window 12b opening in the center of the top surface through which the handle 30 is exposed, and a local part of the opening window 12b forms a protrusion 12c projecting from the top surface of the cover 12. Furthermore, a hook recess 1 is provided on the outer peripheral surface of the side wall of the cover 12.
2d is formed.

As shown in FIG. 3, a decorative cover 15 is fitted onto the cover 12. The decorative cover 15 is made of thermoplastic resin and is formed into a square shape, and has an opening 1 on its top surface.
5a is formed, and a protrusion 12c of the cover 12 is fitted into this opening 15a. Further, a hook 15b is formed on the inner peripheral surface of the side wall of the decorative cover 15, and the hook 15b engages with the hook recess 12d of the cover 12. Therefore, when the decorative cover 15 is fitted onto the housing 10, the assembly screws 13 exposed on the top surface of the cover 12 are covered, resulting in a clean appearance.

To connect the wires, remove the decorative cover 15, remove the assembly screws 13, and remove the cover 12 from the body 11.
．． 22 is exposed and wiring can be made.
Here, since the handle 30 is held by a support frame 31 fixed to the body 11, the handle 30 does not fall off.
Wiring work can be done easily. In other words, you can perform wiring work with the cover 12 removed and operate the handle 30 in that state to test whether the load is turned on or off, and if there is a wiring mistake, it can be corrected immediately. It can be done. Further, the support frame 31 is disposed so as to surround the side circumference of the contact portion, and the contact portion is surrounded by the body 11, the handle 30, and the support frame 31, and the contact portion is opened. Since the arc that sometimes occurs is dispersed by the handle 30 and the support frame 31, the cover 1
2 and does not exit the housing 10.

In each of the above embodiments, the indicator lamp 34 lights up when the contact part is opened, and if used as a switch for a lighting device, the position of the switch will be displayed when the lighting device is turned off. However, the display lamp 34 may be turned on when the contact portion is in the I\l pole to provide an operation display indicating the on/off state of the load.

[Effects of the Invention] As described above, the present invention provides a structure in which the support protrusion that protrudes from the side surface of the handle and serves as the pivot axis is able to swing freely relative to the support recess provided in the support frame fixed to the body. Since they are engaged, the handle can be operated even if the cover is removed, and it is possible to check whether the load is on or off during wiring work with the cover removed. That is, if there is an error in the wiring, it can be corrected immediately, which has the advantage of improving the efficiency of the wiring work.

In addition, since the support frame is placed in a position that surrounds the contact section together with the body, the arc generated when the contact section is opened is shielded by the support frame and prevented from penetrating the cover, allowing a safe switch. We can provide it.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention, FIG. 2 is a vertical sectional view of the same, and FIG. 3 is an external perspective view of the same. 10...Housing, 11...Body, 12...
Cover, 12b... Opening window, 30... Handle, 3
0a...Support protrusion, 3(')c...Operation surface, 31.
...Support frame, 31b...Support recess, 32...Reversal spring. Agent Patent Attorney Ishi 1) Choshichi

Claims (2)

[Claims] (1) In a switch that has a handle that is swingably disposed relative to the housing, and whose contacts are operated as the handle swings, the housing consists of a body that is attached to a wall surface, etc., and a body that is attached to a wall or the like. and a cover having an opening window that is removably fitted over the housing and exposes the handle to the outer circumferential surface of the housing. A support protrusion, which serves as a swing axis of the handle, protrudes from the side that intersects with the operating surface of the handle, and a support recess is provided in which the support protrusion swingably engages with a support frame fixed to the body. A switch characterized in that a part is formed. (2) In a switch that has a handle that is swingably disposed relative to the housing, and whose contacts are operated as the handle swings, the housing includes a body that is attached to a wall surface, etc. and a cover having an opening window that is removably fitted over the housing and exposes the handle to the outer circumferential surface of the housing. A support protrusion that serves as a pivot axis of the handle is provided protruding from the side that intersects with the operation surface of the handle, and a support frame is fixed to the body and is arranged to surround the contact part together with the body. A switch characterized in that the support frame is formed with a support recess into which the support protrusion swingably engages.