JPH0614358Y2 - 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 switch-equipped lamp having a lever switch of this type, there is one disclosed in, for example, Japanese Utility Model Publication No. 57-22633.

This conventional technique is bent in a U-shape so that a bottom portion is formed in the center, and is fitted into a pair of sockets having mounting holes formed in a pair of opposed sandwiching pieces and a mounting hole formed in the pair of sandwiching pieces. Between a base body in which socket insertion holes each formed with a protrusion to be attached are formed at regular intervals, a switch lever pivotally attached to the base body, and between one of the sockets and the switch lever. One end is fixed to the base body, and the other end is made up of an elastic piece that is in contact with one of the sandwiching pieces of the socket by the operation of the switch lever to form a switch mechanism.

[Problems to be Solved by the Invention] In the above-mentioned conventional technique, the operation lever is rotated to simply push the bullet piece against the sandwiching piece to turn on the switch, and the bullet piece is separated from the sandwiching piece to turn it off. Therefore, at the time of switching the switch, it is not possible to give a click action, that is, a snap action to the operation lever, the operation feeling is flat and the operation is not crisp, and the switch is turned on simply by pressing the bullet. Since the elastic force of the bullet piece is merely for pulling back the bullet piece and does not contribute to the conductive contact between the contact pieces of the switch, there is a problem that contact failure is likely to occur.

In order to eliminate the above-mentioned problems, the present invention uses, as the first fixed contact piece, a fixed contact piece having a flat spectacle shape and at least one convex protrusion, and a movable contact piece having elasticity. So, with a snap action (click action),
Moreover, it is an object of the present invention to maintain stable contact conduction by positively participating in the elasticity of the convex portion and the movable contact piece in the contact of the switch.

[Means for Solving the Problems] The above-mentioned object of the present invention is to provide a plastic molded insulating base body, a hinge boss protruding from the upper surface of the insulating base body, an operating lever pivotally supported by the hinge boss, and an operating lever. The first fixed contact piece and the second fixed contact piece, each of which has a substantially Ω-shaped movable contact piece attached to an end portion on the opposite side of the portion, and a curved convex portion attached to the base body at a position where the movable contact piece contacts. A piece, a squeezing type holding connector having the first fixed contact piece and a locking portion, and an attachment hole formed in the insulating base for locking the holding connector to the insulating base. This is achieved by including a locking portion.

[Operation] By rotating the operation lever rotatably provided with the hinge boss of the insulating base as a fulcrum, the movable contact piece attached to the operation lever connects the first and second fixed contact pieces. And can be made non-conductive.

The rotation amount of the operating lever is limited by each fixed contact piece, and the upward movement of the lever can be limited by being locked by the hook portion of the hinge boss.

Further, it is also possible to use another female connecting piece by inserting the other female connecting piece into surface contact with the female connecting portion which also functions as one of the fixed connecting pieces of the holding connector.

Then, by the pair of convex protrusions formed on the first fixed contact piece,
A click action, that is, a snap action can be added to the movement of the operation lever when switching the switch.

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

First of all, as shown in FIGS. 1 and 2 in which the respective parts are disassembled, the basic structure of the present invention is to project a hinge boss 2 with a vertical groove 2A divided into four, for example, on the upper surface of a plastic molded insulating substrate 1. An operation lever 3 is pivotally supported on the hinge boss 2 by engaging a hook 2B of the hinge boss 2 with a pivot by a pivoting hole 3a.

Then, a substantially Ω-shaped movable contact piece 4 is firmly inserted into and attached to the attachment pins 3b and 3b projecting from the end portion 3B on the opposite side of the operation portion 3A of the operation lever 3 by its winding portions 4a and 4a. To do.

Further, a pair of knuckles formed by forming a metal piece such as phosphor bronze attached to the insulating substrate 1 at the position where the movable contact piece 4 contacts as shown in FIGS. The first fixed contact piece 5 and the second fixed contact piece 6 having the convex portions 5a, 5a are arranged as shown in FIG.

Further, as shown in FIG. 3, a holding type holding connector 8 integrally provided with the first fixed contact piece 5 and the locking portion 7 is provided in the attachment hole 9 formed in the insulating substrate 1. The lever switch device of the present invention is constructed by engaging and locking the locking portion 10.

In each drawing, the reference numeral 12 indicates the lead wire, 1a,
Reference numeral 1b is a projection standing on the insulating base 1, 6a and 11a are locking claws, and F is a transparent or translucent hood.

The movable contact piece 5 is made by molding an elastic metal piece such as phosphor bronze into a substantially Ω shape.

The second fixed contact piece 6 has an insulating base 1 as shown in FIG.
By inserting the locking claw 6a into the through hole 1A provided along the above-mentioned projection 1a while straddling the bent portion 6A of the projection 1a, the elastic force of the locking claw 6a is restored. It attaches by snapping with a snap action.

Further, the third fixed contact piece 11 has an insulating base 1 as shown in FIG.
By inserting the locking claw 11a into the through hole 1B provided along the protrusion 1b, the snapping can be locked with one shot.

Either one of the fixed contact pieces 6 and 11 can be omitted, and in response to this omission, one of the pair of curved projections 5a, 5a of the first fixed contact piece 5 can be replaced with a curved projection. It can be omitted.

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

First, as shown in FIG. 6, when the operating lever 3 is inclined downward to the right, the movable contact piece 4 holds the fixed contact pieces 5 and 11 by short-circuiting.

Then, when the operation lever 3 is rotated against the elastic force of the fixed contact piece 4 by using the hinge boss 2 as a fulcrum and the operation lever 3 is brought into the horizontal state as shown in FIG.
The locking lever 5 can be inserted into the pair of curved convex portions 5a and 5a while exhibiting a click action, that is, a snap action, and the operation lever 3 can be maintained in this retracted position. The piece 5 does not contact the other fixed contact pieces 6 and 11 and is in a switch-off state.

Next, as shown in FIG. 8, when the operating lever 3 is tilted to the upper left position with the hinge boss 2 as a fulcrum against the elastic force of the movable contact piece 4, the first convex contact piece 5 and the second convex portion 5a The outer surface of the distal end of the movable contact piece 4 moves in between the fixed contact piece 6 and the fixed contact piece 6 while exhibiting a click action, and the operating lever 3 can be maintained in this inserted position. The second fixed contact piece 6 and the second fixed contact piece 6 are short-circuited at the outer surface of the tip of the fixed contact piece 4 and are in a switch-on state.

Then, another tube base 1 opposed to the base 1 of the tube L inserted and connected to the holding connector 8 is connected to the holding connector 8a as described above.
Alternatively, the bulb L or the like is turned on by connecting to one pole of the power source through another connecting tool or bus bar, connecting the fixed contact piece 6 or 11 to the other pole of the power source, and rotating the operating lever 3.・ Can be turned off.

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

In the lever switch device of the present invention, a first fixed contact piece having a pair of spectacle-shaped curved convex portions in plan view is used, and an Ω-shaped bullet piece made of an elastic conductor is used as the movable contact piece. Therefore, since the click action of the movable contact piece, that is, the snap action with respect to the curved convex portion occurs at the time of switching the rotation of the operation lever, the operability of the rotation switching of the operation lever is remarkably improved, and a switch with a snap and a crispness There is a first effect that the operation can be performed.

Further, since the elastic force of the convex portion and the elastic force of the movable contact piece are directly related to the contact conduction action between the contact pieces at the time of switch-on, the contact force between the contact pieces at the time of switch-on is particularly high. It has a second effect that the contact can be stably maintained for a long period of time.

[Brief description of drawings]

1 shows an embodiment of the present invention. FIG. 1 is an exploded perspective view of a lever switch device, FIG. 2 is a sectional view of the same during assembly, and FIG. 3 is a sectional view of the same after assembly.
4 and 5 are enlarged cross-sectional views of the fixed contact piece mounting portion, and FIGS. 6, 7, and 8 are plan views of the essential portions with the operating levers in different states. 1 ... Insulating base, 5, 6 ... Fixed contact piece 2 ... Hinge boss, 7, 10 ... Locking part 3 ... Operating lever, 8 ... Clamping connector 4 ... Movable contact piece, 9 ... Hole

Claims (1)

[Scope of utility model registration request] 1. An insulating base body 1 formed by plastic molding, a hinge boss 2 projecting from the upper surface of the insulating base body 1, an operating lever 3 pivotally supported by the hinge boss 2, and an operating lever 3 thereof.
A substantially Ω-shaped movable contact piece 4 attached to the opposite end 3B of the operating portion 3A, and at least one ridge 5a attached to the insulating base 1 at a position where the movable contact piece 4 contacts. The first fixed contact piece 5 and the second fixed contact piece 6 which it has, the first fixed contact piece 5 and the retaining portion 7 which are integrally provided respectively, and a squeezing type clamping connector 8, and this clamping Attachment holes 9 formed in the insulating base 1 for locking the connector 8 to the base 1.
A lever switch device, each of which is provided with a locking portion 10 provided on the.