JPH0620270Y2 - Lever switch device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a lever switch device suitable for use in a switch such as a room lamp of an automobile.

[Prior Art] As a device for mounting a rotary body for operating a switch or the like, there is a conventional device described in, for example, Japanese Utility Model Laid-Open No. 52-54863.

This conventional technique comprises a plastic molded chassis and a rotating body attached to the chassis. The rotating body is integrally formed with at least one fulcrum shaft, and the chassis has a substantially semi-circular fulcrum. At least one support arm having a shaft fitting portion and at least one claw having elasticity for pressing the fulcrum shaft fitted to the fitting portion from the side opposite to the support arm are integrally formed. Molded,
A rotary body mounting device in which the fulcrum shaft is rotatably supported about the fulcrum shaft while the fulcrum shaft is fitted in the fitting portion and the fulcrum shaft is pressed by the claws.

[Problems to be solved by the invention] However, in this conventional device, when the operation lever is pivotally supported on the main body chassis, the fulcrum shaft of the operation lever (knob) is inserted between the pair of claw plates on the main body side. After that, the shaft is moved downward while flexing the claw plate outward, and the support arm is flexed at the end point thereof while the claw plate is engaged with the upper surface of the fulcrum shaft by its elastic return to support the operation lever at the fulcrum shaft. It is pivotally supported on the arm fitting part.

Therefore, when the knob is operated, a load reaction force applied to the lower part of the knob applies a relative force to the fulcrum shaft in the direction of squeezing the fulcrum shaft, that is, in the direction of escaping from the fitting recess of the support arm. As a result, the support arm is pushed downward on the slope of the fitting recess, and as a result, the support arm bends down against its elasticity, and the knob fulcrum shaft comes out of the support arm fitting part and becomes unusable. There is a serious problem that this accident cannot be repaired from the outside.

Also, if downward operation stress is applied to the knob,
The support arm is pushed down by the fulcrum shaft and bends down, causing the operating lever (knob) to move abruptly, causing poor operation and erroneous operation, which may cause personal injury depending on the application location. There is a serious problem that can happen.

Also, in order to turn on and off the electric circuit with this conventional one, it is necessary to control the slide switch separately provided by the movement of the knob pin, so the sum of the cost of this switch and the cost of the member around the switch is required. There are many problems that the cost is increased by the amount and the space is disadvantageous.

In order to eliminate the above-mentioned problems, the present invention improves the operability and the assemblability by disposing the operation lever of the switch so as to pivotally support the frame-shaped base substantially vertically. At the same time, the flexible movable contact piece is attached to the operation lever with one touch to promote automation of assembly.

[Means for Solving the Problems] The above-mentioned object of the present invention is to provide an insulating base formed of plastic into a substantially hollow rectangular parallelepiped shape, a hinge boss formed between the upper and lower voids of the base, and these hinge bosses. An operating lever in which a pair of flexible hinge pieces are pivotally supported by the hole, a bridging piece that closes the lower part of the hole formed in the lower part of the operating lever, and an upward projecting projection at the center of the bridging piece A locking claw, a movable contact piece made of a substantially U-shaped elastic conductor, which has a pair of contact points facing each other in the hole, and which is engaged with and locked to the locking claw with a locking edge; A hugging type having a first fixed contact piece and a second fixed contact piece which are arranged to face the base body with the movable contact piece interposed therebetween, and a female connection portion into which a part of the first fixed contact piece is to be fitted. And a locking device provided in a cavity of the base body for locking the holding connector. It was possible to achieve by having each section.

[Operation] By rotating an operating lever having a pair of hinge pieces pivotally supported by a hinge boss provided between upper and lower holes of the base body with the hinge boss as a fulcrum, the operation lever is inserted into the lower bridging piece of the operating lever. With the movable contact piece, the first and second fixed contact pieces can be electrically connected to each other, and for example, the straight tube lamp can be turned on.

Further, by tilting the operation lever to make the fixed contact pieces non-conductive, for example, the straight tube lamp can be turned off.

The vertical movement and horizontal movement of the operating lever can be prevented by the entire inner peripheral surface of the hole of the hinge piece pivotally supported by the hinge boss, the operating lever does not come out of the base body, and the movable contact piece is locked by the elastic force of the lever. It does not slip out of the operating lever due to the action, and it does not move out of position.

That is, the U-shaped movable contact piece is elastically tightly attached by the engaging edge of the engaging claw of the bridging piece formed on the operation lever, so that the U-shaped movable contact piece unintentionally comes out due to external force due to the operation stress of the operation lever. Also, it is possible to surely conduct and cut off the conduction between the first and second fixed contacts without displacement.

[Examples] Examples will be described with reference to the drawings.

The basic configuration of the lever switch of the present invention is as follows. First, in the sectional views for explaining the assembling order shown in FIGS. 1 and 3 to 5, and in the perspective view of the operation lever portion shown in FIG. As shown in FIG. 1 and FIG.
A pair of hinge bosses 4 and 4 are provided so as to face each other between upper and lower voids 2 and 3 of an insulating base body 1 formed of plastic into a substantially hollow rectangular parallelepiped shape, and an operating lever 6 is pivotally supported on these hinge bosses 4 and 4. In doing so, the hinge pieces 5, 5 forming a flexible pair are engaged while being bent, and the hinge boss 4 is inserted into the hole 5a of the hinge piece as shown in FIG. Be prepared to pivot.

The operating lever 6 is provided with a bridging piece 6b in the lower part of the operating lever 6 which covers the lower part of the hole (or recess) 6a formed as shown in FIG. A locking claw 6c as shown in FIG.

Further, the two contact points 9a, 9a facing each other and the locking edge 9b on the base part
The movable contact piece 9 made of a substantially U-shaped elastic conductive plate as shown in FIG.
The two contact portions 9a, 9a face each other in the hole 6a, and the movable claw 6c is elastically and tightly engaged with the movable contact piece locking edge 9b by the movable contact piece 9a. 9 is provided under the operation lever 6 as shown in FIG.

In this invention, the second fixed contact piece 11 mounted as shown in FIG. 3 after the state shown in FIG. 1 and the female connection portion 12 into which a part of the first fixed contact piece 10 is to be inserted are provided. 11 A holding type holding connector 13 as shown in FIG. 11, and this holding connector.
And a locking portion 15 (FIG. 11) provided for locking and inserting 13 in the space 14 of the base body 1.

Note that FIG. 6 is a bottom view of what is shown in FIG. 5, and the portions having the same reference numerals indicate the equivalent portions or the equal portions, but in particular, the first and second fixed contact pieces 10 and 11 are hatched for easy understanding. Is filled in.

Further, in FIG. 2, a portion indicated by reference numeral 6c is a locking claw (locking hole) for locking the movable contact piece 9 with the locking hole (or locking claw) 9b.

Next, the operation of the lever switch of this invention will be described.

As shown in FIGS. 3 to 5, the lever switch according to the present invention has a pair of hinge pieces pivotally supported by a hinge boss 4 provided between the upper and lower holes 2 and 3 of the base body 1 as shown in FIGS. By rotating the operation lever 6 as shown in the drawings with the hinge boss 4 as a fulcrum as shown in FIGS. 7 and 8, the movable contact piece 9 inserted into the lower bridging piece 6b of the operation lever 6 is attached. The first and second fixed contact pieces 10 and 11 can be electrically connected to each other as shown in FIGS. 8 and 9, and the straight tube lamp L can be turned on.

Further, as shown in FIGS. 6 and 7, for example, the straight tube lamp L can be turned off by tilting the operation lever 6 to make the fixed contact pieces 10, 11 non-conductive.

The vertical movement and horizontal movement of the operating lever 6 can be prevented by the entire inner peripheral surface of the hole 5a of the hinge piece 5 pivotally supported by the hinge boss 4, so that the operating lever 6 does not come out of the base body 1 or the movable contact piece 9 and the lever 6 also move. From the above, it does not slip out of the operating lever due to the locking action of its own elasticity, and there is no displacement.

That is, the U-shaped movable contact piece 9 is elastically tightly abutted by the locking edges 9b, 9b to the locking claw 6c of the bridging piece 6b formed on the operation lever 6, and is attached by sandwiching the operation lever. The external force due to the operation stress of 6 does not make a delusion
It is possible to surely connect and disconnect the first fixed contact 10 and the second fixed contact 11 without displacement.

Further, a tube L inserted and connected to the holding connector 13 as required.
The other bulb base 1 opposed to the base 1 of the above is connected to one pole of the power source through the holding connector 3 or other connector or bus bar as described above, and the second fixed contact piece 11 is connected to the power source. By connecting the other pole and rotating the operating lever 6, the first and second
It is possible to turn on and off the bulb L by connecting or disconnecting the fixed contact pieces 10 and 11 with the movable contact piece 9.

As an application example of this invention, it can be applied as a blinking switch of a room lamp as shown in FIGS. 9, 10 and 11, where L is a tube and l and l are both sides of the tube. The base F is a transparent hood or a lens member, and other reference numerals indicate the same or equivalent portions as those shown in FIGS. 1 to 5.

[Advantages of the Invention] Since the present invention is configured as described above, it has the following effects.

Rotating an operating lever 6 having a pair of hinge pieces pivotally supported by a hinge boss 4 provided between upper and lower holes 2 and 3 of a base body 1 formed of plastic into a substantially hollow rectangular parallelepiped shape, using the hinge boss 4 as a fulcrum. Therefore, since the flexible movable contact piece 9 inserted into the lower bridging piece 6b of the operation lever 6 can control the conduction between the first and second fixed contact pieces 10 and 11,
The fixed contact pieces 10 and 11 need not be particularly elastic or flexible and are therefore versatile, and the operability is good because the operation lever can be placed downwards on the ceiling.
There is a second effect.

Further, the vertical movement and the horizontal movement of the operating lever 6 can be prevented by the entire inner peripheral surface of the hole 5a of the hinge piece 5 pivotally supported by the hinge boss 4, and the operating lever 6 is a base body even if the load during the operation is considerably large. Since the lever 6 does not slip out of the pivotal support portion 1, and the lever 6 is pivotally supported by the hole, it does not sink into the delusion during the operation, so that there is a third effect that the operability can be always ensured to be good.

Further, since the U-shaped movable contact piece 9 is elastically tightly abutted by the engaging edges 9b, 9b to the engaging claw 6c of the bridging piece 6b formed on the operating lever 6, the operating lever is operated. The first and second fixed contacts do not slip out by the external force due to the operation stress of 6 or the like and are not displaced.
You can connect between 10 and 11 and cut off the connection,
There is a fourth effect that the automation of assembly can be promoted.

In particular, in this invention, the inner surfaces of the contact portions 9a, 9a of the movable contact piece 9 are in a free state, and the hole (recess) 6 of the operation lever 6 is formed.
Since they face each other with a certain space in a, contact points 9a, 9a
The elastic repulsive force of the fixed contact piece 10,11
Even if it is not an elastic conductive material, there is a fifth effect that it is possible to satisfactorily conduct electricity between these fixed contact pieces by using the elastic movable contact pieces and to make them non-conductive.

[Brief description of drawings]

Each of the drawings shows one embodiment of the present invention, and FIGS. 1 and 3 to 5 are sectional views for explaining the assembling order, FIG. 2 is a perspective view of an operating lever portion, and FIG. 5 is a bottom view of what is shown in FIG. 5, FIG. 7 is an explanatory view of an operation in which the base body is cross-sectioned, FIG. 8 is an explanatory view of the same state as FIG. 7, and FIG. 9 is a lever switch device of the present invention. FIG. 10 is a vertical sectional elevational view showing an example in which is applied to a room lamp for automobiles, etc., FIG. 10 is a schematic cross-sectional side view thereof, and FIG. 11 is an exploded perspective view of the one shown in FIG. 9 before assembly. DESCRIPTION OF SYMBOLS 1 ... Base | substrate, 6c ... Locking claw 2,3,14 ... Space, 9 ... Movable contact piece 4 ... Hinge boss, 9a ... Contact part 5 ... Hinge piece, 10,11 ... Fixed contact piece 6 ... Operation lever, 12 ... Female connection parts 5a, 6a ... Holes (recesses), 13 ... Holding connection tool 6b ... Bridging piece, 15 ... Locking part

Claims (1)

[Scope of utility model registration request] 1. An insulative base body (1) formed of plastic into a substantially hollow rectangular parallelepiped shape, hinge bosses (4, 4) facing each other between upper and lower cavities (2, 3) of the base body, and these hinge bosses.
An operation lever 6 in which flexible hinge pieces 5, 5 forming a pair with 4, 4 are pivotally supported by the hole 5a, and a bridging piece 6b for closing the lower part of the hole 6a formed in the lower part of the operation lever 6, The bridging piece 6b has a locking claw 6c protruding upward from the center and a pair of contact portions 9a, 9a facing each other in the hole 6a.
A movable contact piece 9 made of a substantially U-shaped elastic conductor, which is engaged with and locked to c by a locking edge 9b, and a first fixed contact piece arranged to face the base body 1 with the movable contact piece 9 interposed therebetween. 10 and the second fixed contact piece 11, and a holding type holding connector 13 having a female connecting portion 12 into which a part of the first fixed contact piece 10 is to be inserted, and the holding connector 13 is locked. In order to achieve this, a lever switch device is provided, each of which is provided with a locking portion 15 provided in the space 14 of the base 1.