JPH0646044Y2 - Lever switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a lever switch in which a movable contact piece and a fixed contact piece are contacted or separated by operating a lever.

[Prior Art] Conventionally, a lever switch in which a lever is operated to drive a movable contact piece with respect to a fixed contact piece is widely known, but this lever is inconvenient because it can be operated only from one direction. There was In addition, there is also a problem that the assembly work generally requires considerable labor and skill.

[Object of the Invention] An object of the present invention is to enable a lever for driving a movable contact piece to be operated from two directions, a horizontal direction and a vertical direction, and to facilitate assembly and ensure reliable contact between contacts. The purpose is to provide a lever switch.

[Summary of the Invention] The gist of the present invention for achieving the above object is to provide a fixed contact piece made of a metal elastic strip on the lower side of the cuts provided at appropriate intervals and a movable contact piece on the upper side. Each of the bottom portions is fitted in and held in parallel, a lid portion is placed on the bottom portion, and a driving lever member rotatably held between the bottom portion and the outside. A rotary shaft that is pressed from above by a bearing formed inside the ceiling of the lid, a cam that operates the movable contact piece by the rotation of the rotary shaft, and the rotary shaft that slides into contact with the bottom to position the rotary shaft at a predetermined position. Is integrally formed by a fan-shaped portion that is retained by the lever portion and a lever portion that protrudes outward from the lid portion, and the lever portion can be driven in two directions, a direction parallel to the fixed contact piece and a direction orthogonal to the fixed contact piece. The fixed contact piece extends outward from the gap provided in the lid. The lever switch is characterized by protruding in an oblique direction with respect to.

[Embodiment of the Invention] The present invention will be described in detail based on the illustrated embodiment.

FIG. 1 is an overall perspective view of a lever switch according to the present invention,
2 is a cross-sectional view, FIG. 3 is a perspective view with a lid portion and a driving lever member removed, and FIG. 4 is a perspective view of the driving lever member. This lever switch is composed of a lid portion 1 made of synthetic resin, a bottom portion 2, a driving lever member 3, and two sets of strip-shaped contact pieces 4, 6 and 5, 7 made of an elastic metal plate. The fixed contact pieces 4 and 5 are notches 2a and 2b (2b
(Not shown) are arranged side by side, and the tips of these are locked so that they do not bounce upward.
, And the middle portion is supported from below by a base portion 2i provided on the bottom portion 2. Above these fixed contact pieces 4 and 5, movable contact pieces 6 and 7 are similarly cut 2c,
The movable parts 6a, 7a of the movable contact pieces 6, 7 are elastically lifted upward, and the tips of these are electrically connected to the fixed contact pieces 4, 5 by being inserted into 2d and fixed. Curved for easy contact. Notch 2a of contact piece 4-7
When inserting into 2d, a protruding piece (not shown) is provided on the contact pieces 4 to 7 so that the contact pieces 4 to 7 do not move in the longitudinal direction with respect to the bottom portion 2. Further, the connection ends of the contact pieces 4 to 7 that are connected to the lead wires and the like are bent and extended in an L-shape outside the lid portion 1, and the fixed contact pieces 4 and 5 and the movable contact piece 6 are provided.
An insulating portion 2e which extends a part of the bottom portion 2 is interposed between the seven.

A drive lever member 3 is sandwiched between the lid portion 1 and the bottom portion 2, and the drive lever member 3 is provided with a rotation shaft 3a on both sides of the rotation center thereof. Bearings 1a provided on both inner sides of the outer portion 1 shown in the drawing are rotatably pressed from above. In the vicinity of the rotation shaft 3a of the drive lever member 3, a cam portion 3b for pressing the movable contact pieces 6 and 7 is provided.
And a fan-shaped portion 3c for slidingly contacting the bottom portion 2 between the fixed contact pieces 4 and 5 in order to hold the rotation shaft 3a of the drive lever member 3 in a predetermined position so as not to move downward. Has been. Further, a lever 3d bent in a V shape is extended from the driving lever member 3 so as to project outward from the window 1g of the lid portion 1. And these rotary axes 3
The a, the cam portion 3b, the fan-shaped portion 3c, and the lever 3d are integrally formed.

The lid portion 1 has holes 2b and 1c in which the lid portion 1 is provided with protrusions 2f and 2g (2g is not shown) protruding from both sides of the bottom portion 2 with respect to the bottom portion 2.
(1c is not shown) is fitted and fixed. The lid 1 has a locking claw at its tip, and two locking pieces 1d and 1e for locking with a board or the like are projected.

FIG. 2 shows a state in which the driving lever member 3 does not operate,
The lever portion 3d is biased by the elastic force of the movable contact pieces 6 and 7 so as to rotate clockwise through the cam portion 3b. The fixed contact pieces 4 and 5 and the movable contact pieces 6 and 7 are in a separated state.

Here, when a driving force is applied to the lever portion 3d from the direction A or B of FIG. 2, the driving lever member 3 rotates about the rotation shaft 3a while being held by the sector portion 3c, and the cam portion 3b moves. The movable contact pieces 6 and 7 are pushed down, the fixed contact piece 4 and the movable contact piece 6, and the fixed contact piece 5 and the movable contact piece 7 are brought into contact with each other to establish conduction therebetween.
When the driving force is released, the driving lever member 3 returns to its original position by the elastic force of the movable contact pieces 6 and 7, and the lever portion 3d also returns to its original position.

The rotation of the driving lever member 3 is the second with respect to the clockwise direction.
As shown in the figure, the rotation restricting surface 3e of the lever portion 3d is stopped by coming into contact with the step surface 1f of the lid portion 1, and in the counterclockwise direction, the lever portion 3d is closed as shown by the dotted line. It is stopped by touching.

As for the driving force, even if it is overstroked when it is applied from the direction B in particular, the lever portion 3d is displaced parallel to the direction of the driving force as shown by the dotted line in FIG. You can let it escape,
It will not damage the lever switch.

Further, FIG. 5 shows a modification of the driving lever member 3, in which the lever portion 3d is curved in an arc shape, and even if there is a sudden driving force from the A direction or the B direction, the response of the switch is caused by this bending. The softness is relaxed so that no abnormal impact is applied to the contact piece.

By making the present invention an assembly type as in the embodiment, the contact portion can be closed by the lid portion 1 and the bottom portion 2, and a lever switch having good performance can be completed without adjusting the contact pieces 4 to 7. You can

Further, in assembling, after the fixed contact pieces 4 and 5 and the movable contact pieces 6 and 7 are fitted into the cutouts 2a to 2d of the bottom portion 2, the rotary shaft 3a of the drive lever member 3 is attached to the cover portion 1. Since it suffices to press the bearing 1a to fit the lid portion 1 into the bottom portion 2 and lock them all at once, all members can be easily assembled by a fitting type.

Although two sets of contact pieces are shown in the embodiment, there is no problem even if only one set or three or more sets of contact pieces are provided.

[Effects of the Invention] As described above, the lever switch according to the present invention can be downsized, and in particular, the lever of the driving lever member that operates the cam portion that presses the movable contact piece can be moved vertically or horizontally. There is an advantage that can be operated from. In addition, since all the members can be assembled by fitting, it is possible to easily assemble without requiring skill and without adjusting the distance between the movable contact piece and the fixed contact piece.

[Brief description of drawings]

The drawings show an embodiment of a lever switch according to the present invention. FIG. 1 is an overall perspective view, FIG. 2 is a sectional view, and FIG.
FIG. 4 is a perspective view showing a state in which the lid portion and the drive lever member are removed, FIG. 4 is a perspective view of the drive lever member, and FIG. 5 is a side view of the drive lever member. Reference numeral 1 is a lid portion, 1a is a bearing, 2 is a bottom portion, 3 is a driving lever member, 3a is a rotating shaft, 3b is a cam portion, 3c is a fan portion, 3d is a lever portion, 4 and 5 are fixed contact pieces, Reference numerals 6 and 7 are movable contact pieces.

Claims (1)

[Scope of utility model registration request] 1. A bottom part for fitting and holding a fixed contact piece made of a metal elastic strip on the lower side of the notches provided at the upper and lower sides with appropriate intervals and holding the movable contact piece on the upper side in parallel, and on the bottom part. And a driving lever member rotatably held between the bottom and the outside, and the driving lever member is pressed from above by a bearing formed inside the ceiling of the lid. A rotation shaft, a cam portion that operates the movable contact piece by rotation of the rotation shaft, a fan-shaped portion that slidably contacts the bottom portion to hold the rotation shaft at a predetermined position, and protrudes outside from the lid portion. The fixed contact piece is integrally formed by a lever part, and the fixed contact piece is outwardly moved from a gap provided in the lid part so that the lever part can be driven in two directions, a direction parallel to the fixed contact piece and a direction orthogonal to the fixed contact piece. Is characterized by protruding in an oblique direction with respect to Over switch.