JPH031868Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) This invention relates to an automatic reset switch used for, for example, turning on and off the power of a power window or a power antenna.

(Prior Art) Conventionally, switches used for turning on and off the power of power windows and power antennas, for example, have had various structures.

In general, the operating feel of a switch is important not only from the perspective of preventing malfunctions, but also from the viewpoint of comfortable operability and improving the product image.This operating feel also depends on individual preference, so it is analyzed. requires not only mechanical but also statistical methods.

In order to obtain a good operational feeling, it is possible to obtain a smooth operational feeling, a sense of moderation, and a sense of stability resulting from a constant operational force.

FIGS. 3 and 4 are diagrams explaining the structure of a conventional switch.

That is, in the figure, the switch 100 is
Shows a 3P type automatic return switch.

This switch 100 includes a case 101, an operation lever 102 that rotates on the case 101,
It mainly consists of a substrate 103 fixed to the case 101 below the case 101.

The case 101 has an opening 101 approximately in the center.
a, and bearings are provided at both ends of the opening 101a.

The operating lever 102 has an operating portion 102a that protrudes from the upper surface of the case 101, and the operating portion 102a
It has an operating part 102b below 2a. This operating portion 102b includes an opening 10 of the case 101.
Rotating shaft 10 supported by a bearing provided in 1a
4, and includes an operating lever 102 rotatably on the case 101.

In addition, a slider 102d having a hemispherical tip is installed in a coil spring 102e in a storage hole 102f formed at the end of the actuating part 102b on the substrate 103 side.
equipped through.

The substrate 103 has a support portion 1 having a bifurcated opening at the center position and having fulcrums 103a, 103a.
03b, and this support part 103b is provided with a substrate 10
3 is connected to the terminal 103c.
The fulcrums 103a, 1 of this support portion 103b
03a, a curved part 10 whose center is curved downward
3d, and movable contacts 103e on the lower surfaces of both ends,
A movable contact piece 103f having a diameter 103e is provided.

Further, fixed contacts 103g, 103g are provided at positions corresponding to the movable contacts 103e, 103e,
Connect each end to the terminal 103 at the outer part of the board 103.
h, connected to 103h.

Therefore, when the switch 100 is in the normal neutral state, the slider 102d provided on the operating portion 102b of the operating lever 102 moves against the movable contact piece 103 due to the repulsive force of the coil spring 102e.
By pressing the curved portion 103d of f, the movable contact piece 10
By setting 3f to the neutral state, each movable contact 1
03e, 103e and each fixed contact 103g, 103
Maintain a state separate from g.

When either end of the operating lever 102 is pushed to rotate the operating lever 102 about the rotation shaft 104, as shown in FIG. 1
The movable contact piece 1 is shifted from the curved portion 103d of 03f.
The movable contact piece 103f slides on the curved inner surface of 03f and passes beyond the fulcrum 103a of the support portion 103b.
By tilting, the movable contact 103e and one of the fixed contacts 103g come into contact and are electrically connected.

Furthermore, when you release your hand from the operating lever 102 in this state, the slider 102d of the operating lever 102 slides onto the curved portion 103d of the movable contact piece 103f due to the repulsive force of the coil spring 102e.
Return to neutral state again.

(Problem to be solved by the invention) However, the conventional switch 1 as described above
00, the operation lever 102 is attached to the case 101.
Since the opening 101a is provided through the case 101 for rotation, water, dust, etc. cannot be prevented from entering the board 103 through the opening 101a, and the inside of the board 103 cannot be prevented. This has an adverse effect on the movable parts and electrical contact parts of the switch 100, resulting in a problem in that the durability of the switch 100 is deteriorated.

The purpose of this invention was to solve the problems of the conventional technology as mentioned above.
The objective is to provide a switch with a clear operation feeling and excellent waterproof and dustproof properties.

[Structure of the invention] (Means for solving the problem) The switch according to this invention is a switch that is equipped with a movable contact that can be connected to and disconnected from a fixed contact by an operating lever, and has a spherical part or an arcuate part on the back surface of the operating lever. and a tapered part is provided on both sides of the spherical part or the circular arc part, and a slider having a protrusion that matches or approximates the spherical part or the circular arc part is provided in a pressed state on the back surface of the operating lever. It is said that

(Embodiment) An embodiment of the switch according to this invention will be described below with reference to FIGS. 1 and 2.

That is, in the figure, the switch 1 includes a case 2 and an operating lever 3 that rotates on the case 2.
and a substrate 4 fixed to the case 2.

The case 2 has a support part 2b projecting from the bottom plate 2a of the case 2 at the center of the case 2, and a slider storage hole 2c that opens upward from the bottom plate 2a inside the support part 2b. ing. and,
A coil spring 2d is installed in this slider storage hole 2c.
A slider 2e having a hemispherical protrusion P is provided so as to be slidable up and down.

Further, in this embodiment, two push rod guides 2 are provided on the outer side of the support portion 2b.
2f and 2f project upward from the bottom plate 2a of the case 2, respectively, and push rod guide holes 2g and 2g are provided inside the case 2, passing through the top and bottom of the case 2, respectively.

The push rod 2h has an upper end formed in an umbrella shape, a tip end serving as an operation lever contacting part 2i, a side part serving as a covering part 2j that covers the push rod guide 2f, and an actuating part 2k serving as the push rod guide 2f. It is slidably provided in the hole 2g. A rubber switch 4a, which will be described later, is attached to the lower end of this operating section 2k.
A movable contact 2l is provided via the movable contact point 2l.

Furthermore, bearings are provided inside the side walls 2m of the case 2, respectively.

The operating lever 3 has an opening 3a on the lower side, and has push rod pressing parts 3c, 3c on the back side of the operating part 3b of the operating lever 3. The operating portion 3b has a tapered portion T formed in a center position on the back surface thereof to expand downward, and a spherical portion S is provided at the center of the tapered portion T. It has a shape that matches part P.

Further, the outer portions of the side walls 3e, 3e of the operation lever 3 are provided with rotation shafts 3f, 3f supported by bearings of the case 2, respectively.

The upper end of the board 4 is fixed to the case 2,
A rubber switch 4b made of an elastic body is provided on the bottom plate 4a of the substrate 4, and a part of the rubber switch 4b is provided to push the push rod 2h upward, and a movable contact 2l is provided below the push rod 2h via the rubber switch 4b. has been established.

Further, a fixed contact 4 is provided at a position opposite to the movable contacts 2l, 2l and penetrated to the outer part of the board 4.
c, 4c', 4c, 4c'.

Therefore, in the normal neutral state of the switch 1, the spherical part S of the tapered part T of the operation lever 3 and the protrusion P of the slider 2e provided on the support part 2b of the case 2 fit together. According to
Push rods 2h, 2h are both pushed up to the same position, and movable contacts 2l, 2l and fixed contact 4
c, 4c', 4c, and 4c' are spaced apart to maintain a state in which no current is applied between the respective contacts.

Then, as shown in FIG. 2, when one of the ends of the operating part 3b of the operating lever 3 is pushed and the operating lever 3 is rotated, the protrusion of the slider 2e provided on the support part 2b of the case 2 P is removed from the spherical part S of the tapered part T of the operating lever 3, and the push rod pressing part 3c of the operating lever 3 pushes down the operating lever abutting part 2i of the push rod 2h. A movable contact 2l and a fixed contact 4 provided on the board 4
c, 4c' contact, both contacts 2l, 4c, 4
c' becomes energized.

In this state, when you release your hand from the operating part 3b of the operating lever 3, the repulsive force of the rubber switch 4b of the base plate 4 pushes the push rod 2h upward, and the slider 2e provided on the support part 2b of the case 2 moves upward. The protrusion P is fitted again with the spherical part S of the tapered part T of the operating lever 3, and the movable contact 2l at the lower end of the push rod 2h and the fixed contacts 4c and 4c' of the board 4 are separated, and the position is automatically returned to the neutral state. to return to.

[Effects of the invention] As explained above, according to the switch according to this invention, in a switch in which a movable contact can be connected and disconnected from a fixed contact by a rotatable operation lever, the back side of the operation lever is A spherical portion or an arcuate portion is provided, a tapered portion is provided on both sides of the spherical portion or the arcuate portion, and a slider having a protrusion that matches or approximates the spherical portion or the arcuate portion is pressed against the back surface of the operating lever. Because of this structure, the spherical or arcuate part provided on the back of the operating lever and the protrusion of the slider provided on the case provide a clear operating feel, and the connection between the case and the board By not having any openings that allow water or dust to enter between the
It has an excellent effect of being highly dustproof.

[Brief explanation of the drawing]

FIG. 1 is a sectional view illustrating an embodiment of the switch according to this invention, FIG. 2 is a sectional view illustrating the energized state of the switch shown in FIG. 1, and FIG. 3 is a sectional view illustrating a conventional switch. FIG. 4 is a sectional view illustrating the energized state of the switch shown in FIG. 3. 1... Switch, 2... Case, 2e... Slider, 2l... Movable contact, 3... Operating lever, 4
c, 4c'...Fixed contact, P...Protrusion, S...Spherical part (arc part), T...Tapered part.

Claims (1)

[Scope of utility model registration request] In a switch in which a movable contact can be connected and disconnected from a fixed contact by a rotatable operating lever, a spherical or arcuate portion is provided on the back surface of the operating lever, and tapered portions are provided on both sides of the spherical or arcuate portion. A switch characterized in that a slider having a protrusion that matches or approximates the spherical portion or the arcuate portion is provided in a pressed state on the back surface of the operating lever.