JP3896616B2 - Push-pull switch - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a push-pull switch used for switching a wide range of voltage and current in various electronic devices.
[0002]
[Prior art]
A conventional push-pull switch will be described with reference to FIGS.
[0003]
FIG. 13 is a cross-sectional view of a conventional push-pull switch, and FIG. 14 is a cross-sectional view of the push-pull switch when operated in the pull direction. In this figure, 12 is an operation portion 12A at the upper end and a U-shape at the lower end. An operating body provided with an operating element 12B is a cover 13 that supports the operating portion 12A so that it can slide in either the push or pull direction.
[0004]
Reference numeral 14 denotes a switch board in which contact portions 14A, 14B and 14C, 14D facing each other are provided on the upper and lower surfaces. The switch board 14 is fixed to a support body (not shown) and has a U-shaped operation element 12B. It is arranged at the center position.
[0005]
Reference numerals 17 and 18 denote substantially hemispherical elastic rubber caps mounted on both sides of the switch board 14, respectively, and the bottom inner surface is electrically connected between the contact parts 14A and 14B and 14C and 14D provided on the switch board 14. Contactors 17A and 18A made of conductive rubber are provided.
[0006]
In the above configuration, when the operation portion 12A of the operation body 12 is pulled in the pull direction, the lower end of the operation element 12B is attached to the lower surface of the switch board 14 as the operation body 12 moves upward as shown in FIG. When the elastic rubber cap 18 is deformed and the contact 18A provided on the inner surface of the bottom portion conducts between the contact portions 14C and 14D provided on the switch board 14 and the tension operation is released, the elastic return force of the elastic rubber cap 18 itself is released. Thus, the operating body 12 moves downward and returns to the OFF state of FIG.
[0007]
Conversely, when the operation portion 12A is pushed in the push direction, the upper end of the U-shaped operation element 12B deforms the elastic rubber cap 17 attached to the upper surface of the switch substrate 14, and is provided on the inner surface of the bottom portion. When the contact 17A conducts between 14A and 14B provided on the switch substrate 14 and releases the pressing operation, the elastic rubber cap 17 itself is restored to the OFF state in FIG. 13 by the elastic restoring force.
[0008]
[Problems to be solved by the invention]
However, in the push-pull switch having the above conventional configuration, the contact portions 14A and 14B and 14C and 14D of the switch substrate 14 are connected by the conductive rubber contacts 17A and 18A. Since the current value is limited and the operation and return position are held by the elastic force of the elastic rubber caps 17 and 18, a sufficient operation force cannot be obtained and the return position is unstable. was there.
[0009]
The present invention solves such a conventional problem, and an object thereof is to provide a push-pull switch that can be used for a wide range of voltage and current, can obtain a sufficient operating force, and can secure a stable return position. It is what.
[0010]
[Means for Solving the Problems]
In order to solve the above-described problems, the push-pull switch of the present invention is a movable metal made of an elastic metal material in a case in which a plurality of metal material fixed contacts are implanted on the inner side wall and an upward protrusion is provided on the inner bottom surface. The operating body holding the contact piece on the side is housed so that it can move up and down, and the lower end of the spring inserted in the spring insertion part of this operating body in a slightly bent state is the projecting part of the case, and the upper part is the opening part of the case. Each of the covers is configured to be in contact with the back surface of the cover.
[0011]
As a result, it is possible to obtain a push-pull switch that can be used for a wide range of voltage currents and that provides a sufficient operating force and a stable return position.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
According to a first aspect of the present invention, there are provided a case made of an insulating material having an open top surface in which a plurality of fixed contacts made of a metal material are planted on an inner side wall and an upward protruding portion is provided on an inner bottom surface, and a spring An operation body having an insertion section and an operation section protruding from the case and housed in the case so as to be movable up and down, a movable contact piece made of an elastic metal material that is held on a side surface of the operation body and contacts and separates from a fixed contact, and an operation A cover having a hole through which the body operating portion is inserted and covering the open portion of the case; and a lower end inserted into the spring insertion portion of the operating body in a slightly bent state; This is a push-pull switch composed of springs that are also in contact with the back side, and because it makes contact and separation between the movable contact piece made of elastic metal material and the fixed contact made of metal material, It can be used and operated in a slightly bent state. Due to the upper end of the lower end of the inserted spring in the spring inserting portion of the body protruding portion of the case configured to abut against the rear surface of the cover, an effect that can be obtained and stable return position sufficient operating force.
[0013]
The invention according to claim 2 is the structure according to claim 1, wherein a plurality of fixed contacts are implanted in the case by insert molding, and has the effect of reducing the number of parts used and the number of assembly steps. .
[0014]
The invention according to claim 3 is the invention according to claim 1 or 2, wherein the moderation spring having the moderation protrusion is held by the case and the cover and is provided on the operation body or the moderation spring is held by the operation body. In addition, the moderation cam is provided on the case or the cover, and the moderation spring and the moderation cam have a function of obtaining a clear moderation feeling when the switch is operated.
[0015]
The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein a plurality of fixed contacts are implanted on a plurality of surfaces of the case inner side wall, and a plurality of movable contact pieces are operated. It is configured to be held on the body, and has an effect that a push-pull switch capable of connecting and separating a plurality of circuits can be configured.
[0016]
According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, an engagement portion is provided at a tip of the operation portion, and an operation key is engaged with the engagement portion. Thus, by attaching operation keys of various operation forms to the holding portion, there is an effect that various operation forms can be made possible.
[0017]
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
(Embodiment 1)
1 is an exploded perspective view of a push-pull switch according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view thereof, FIG. 3 is a cross-sectional view when operated in the same pull direction, and FIG. 4 is operated in the same push direction. In the figure, reference numeral 1 designates a fixed contact 2 made of a metal material on the inner right side wall, and fixed contact points 3 and 4 made of a metal material on the inner left side wall, and moves upward on the inner bottom surface. A case made of an insulating material with an open top surface provided with a protruding portion 1A is an operating body having a spring insertion portion 5A and an operating portion 5B protruding upward from the case.
[0018]
Further, 6 is provided with a movable contact 6A elastically contacting the fixed contact 2 at both ends and a movable contact 6B elastically contacting / separating the fixed contacts 3 and 4, and a movable contact piece whose central portion 6C is held by the holding portion 5C of the operating body 5. 7 is a cover having a hole 7A through which the operation portion 5B of the operation body 5 is inserted in the center and covering the open top surface of the case 1, and 8 is a spring insertion portion of the operation body 5 in a slightly bent state. 5A, the lower end contacts the lower surface 5D of the spring insertion portion 5A of the operating body 5 and the projection 1A of the case 1, and the upper end contacts the upper surface 5E of the spring insertion portion 5A of the operating body 5 and the back surface 7B of the cover 7. Coil spring.
[0019]
In the above configuration, when the operating portion 5B of the operating body 5 is pulled in the pull direction from the state of FIG. 2, the upper end of the coil spring 8 is moved upward as the operating body 5 moves as shown in FIG. The lower end of the coil spring 8 is separated from the protrusion 1A of the case 1 and is compressed by the lower surface 5D of the operating body 5 and is held by the operating body 5 The movable contact 6 </ b> A of the movable contact piece 6 is elastically slid on the fixed contact 2, and the movable contact 6 </ b> B is elastically contacted with the fixed contact 3, whereby the fixed contact 2 and the fixed contact 3 are electrically connected via the movable contact piece 6. And is turned on.
[0020]
When the pulling operation in the pull direction of the operation portion 5B is released, the state of FIG. 2 is restored by the elastic return force of the coil spring 8, and the fixed contact 2 and the fixed contact 3 are returned to the original OFF state.
[0021]
On the contrary, when the operating portion 5B of the operating body 5 is pushed in the push direction from the state of FIG. 2, the lower end of the coil spring 8 is operated as the operating body 5 moves downward as shown in FIG. The upper end of the coil spring 8 is separated from the back surface 7B of the cover 7 and is compressed by the upper surface 5E of the operating body 5 and is held by the operating body 5 away from the lower surface 5D of the body 5 The movable contact 6 </ b> A of the movable contact piece 6 is elastically slid on the fixed contact 2, and the movable contact 6 </ b> B is elastically contacted with the fixed contact 4, whereby the fixed contact 2 and the fixed contact 4 are connected via the movable contact piece 6. When the operation portion 5B is released from the pushing operation in the push direction, the operation returns to the state shown in FIG. 2, and the fixed contact 2 and the fixed contact 4 return to the original OFF state.
[0022]
As described above, according to the present embodiment, the movable contact piece 6 made of an elastic metal material and the fixed contacts 2, 3 and 4 made of metal material can be used for a wide range of voltage and current in order to make contact and separation. Further, the lower end of the spring 8 inserted into the spring insertion portion 5A of the operating body 5 in a slightly bent state is brought into contact with the protruding portion 1A of the case 1 and the upper end thereof is also brought into contact with the rear surface 7B of the cover 7, respectively. Therefore, a sufficient operating force and a stable return position can be obtained.
[0023]
Further, the operating body 5 in which the coil spring 8 is inserted into the spring insertion portion 5A in advance and the movable contact piece 6 is held is housed in the case 1 in which the fixed contacts 2, 3 and 4 are insert-molded. If it is configured to cover, it is possible to perform assembly in which other parts are sequentially stacked on the basis of the case 1, and automatic assembly of the switch can be easily achieved.
[0024]
(Embodiment 2)
FIG. 5 is an exploded perspective view of a push-pull switch according to a second embodiment of the present invention, FIG. 6 is a cross-sectional view thereof, FIG. 7 is a cross-sectional view when operated in the same pull direction, and FIG. In the drawing, holding portions 1B and 7C are provided on the inner bottom surface of the case 1 and the back surface of the cover 7, and a support portion 9B of a U-shaped moderation spring 9 provided with a moderation protrusion 9A therebetween. Are provided, and moderation cams 5F and 5G are provided on the side surface of the operation body 5 to engage with the moderation protrusion 9A of the moderation spring 9 to generate a moderation action.
[0025]
In the above configuration, when the operation portion 5B of the operation body 5 is pulled in the pull direction from the state of FIG. 6, the moderation cam 5G supports the moderation spring 9 as the operation body 5 moves upward as shown in FIG. After bending the portion 9B as a fulcrum, when the moderation cam 5G exceeds the moderation protrusion 9A, the bent moderation spring 9 returns to its original state by the elastic force, so that a sense of moderation in the operation in the pull direction can be obtained. .
[0026]
On the contrary, when the operating portion 5B of the operating body 5 is pushed in the push direction from the state shown in FIG. 6, the moderation cam 5F causes the moderation spring 9 to move along with the downward movement of the operating body 5 as shown in FIG. After bending the support portion 9B as a fulcrum, when the moderation cam 5F exceeds the moderation protrusion 9A, the bent moderation spring 9 returns to its original state by the elastic force, so that the operation in the push direction is the same as the operation in the pull direction. You can get a sense of moderation.
[0027]
The operation of the spring 8 accompanying the movement of the operating body 5 during pull direction or push direction operation, and the electrical contact / separation of the fixed contact 2 and the fixed contacts 3 and 4 by the movable contact piece 6 held by the operating body 5 are performed. This is the same as in the first embodiment.
[0028]
As described above, according to the present embodiment, by providing the moderation spring 9 and the moderation cams 5F and 5G, it is possible to obtain a clear sense of moderation when operating in the pull direction or the push direction.
[0029]
In the above description, the moderation spring 9 is held by the case 1 and the cover 7, and the moderation cams 5F and 5G that engage with the moderation protrusion 9A of the moderation spring 9 are provided on the operation body 5. Needless to say, the same effect can be obtained when the moderation spring 9 is held by the body 5 and the moderation cams 5F and 5G engaged with the moderation protrusion 9A of the moderation spring 9 are provided in the case 1 or the cover 7. .
[0030]
(Embodiment 3)
FIG. 9 is an exploded perspective view of a push-pull switch according to a third embodiment of the present invention. FIG. 10 is a cross-sectional view of the push-pull switch when operated in the pull direction. 2A, 3A, 4A, fixed contacts 2B, 3B, 4B are respectively planted on the inner left side wall facing the U, and the right side surface of the operating body 5 is provided with movable contacts 10A and 10B at one end. The other end root portion of the letter-shaped movable contact piece 10 is held, and the movable contact piece 11 having the movable contacts 11A and 11B is similarly held on the left side surface.
[0031]
In the above configuration, when the operation portion 5B of the operation body 5 is pulled in the pull direction, the movable contact pieces 10 and 11 held by the operation body 5 are moved along with the upward movement of the operation body 5 as shown in FIG. The movable contacts 10A and 11A slide elastically on the fixed contacts 2A and 2B, and the movable contacts 10B and 11B elastically contact the fixed contacts 3A and 3B, so that the fixed contacts 2A and 3A and the fixed contacts 2B and 3B are movable. It is electrically connected via the contact pieces 10 and 11 and is turned on.
[0032]
When the operation unit 5B is pushed in the push direction, the movable contacts 10A and 11A of the movable contact pieces 10 and 11 elastically slide on the fixed contacts 2A and 2B as the operating body 5 moves downward. When the movable contacts 10B and 11B are elastically contacted with the fixed contacts 4A and 4B, the fixed contacts 2A and 4A and the fixed contacts 2B and 4B are electrically connected through the movable contact pieces 10 and 11, respectively, and are turned on.
[0033]
The operation of the spring 8 accompanying the movement of the operating body 5 during the pull direction or push direction operation is the same as in the first embodiment.
[0034]
As described above, according to the present embodiment, a plurality of fixed contacts are implanted on a plurality of surfaces of the case inner side wall, and the operation body 5 is also provided with the plurality of movable contact pieces 10 and 11, thereby connecting a plurality of circuits. A push-pull switch that can be separated can be configured.
[0035]
(Embodiment 4)
FIG. 11 is a perspective view in which a push-pull switch and an operation key according to a fourth embodiment of the present invention are separated, and FIG. 12 is a partial cross-sectional view when the operation key is operated in a seesaw. A protrusion-like engagement portion 5H is provided at the tip of the operation portion 5B of the operation body 5.
[0036]
The engaging portion 5H is swingable in a guide hole 20D of a guide portion 20C provided on the lower surface of the operation surface 20B of the operation key 20 disposed above the push-pull switch and having operation surfaces 20A and 20B on the upper surface. Further, the operation key 20 is supported by a support body (not shown) so that the support portion 20E can turn.
[0037]
In the above configuration, when the operation surface 20A of the operation key 20 is pressed downward, as shown by a dotted line in FIG. 12, the operation key 20 rotates about the support portion 20E, and therefore the engaging portion 5H is inserted into the guide hole 20D. When the operation part 5B of the inserted operation body 5 is pulled upward, the push-pull switch operates in the pull direction, and when the operation surface 20B is pushed downward, the operation key 20 rotates in the opposite direction, The engaging portion 5H of the operation portion 5B is pushed downward, and the push-pull switch operates in the push direction.
[0038]
As described above, according to the present embodiment, the push-pull switch can be operated in a seesaw operation, which is another operation form, by providing the engaging portion 5H that engages with the separately installed operation key 20 at the tip of the operation portion 5B. It can be easily used.
[0039]
In the above description, the case of seesaw operation has been described, but various operation modes such as lever operation and slide operation can be configured by attaching various operation keys to the engaging portion. Of course.
[0040]
【The invention's effect】
As described above, according to the present invention, it is possible to obtain a push-pull switch that can be used for a wide range of voltage and current, and can obtain a sufficient operating force and a stable return position.
[Brief description of the drawings]
1 is an exploded perspective view of a push-pull switch according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of the push-pull switch. FIG. 3 is a cross-sectional view of the push-pull operation. Sectional view [FIG. 5] An exploded perspective view of a push-pull switch according to a second embodiment of the present invention. [FIG. 6] FIG. FIG. 9 is an exploded perspective view of a push-pull switch according to a third embodiment of the present invention. FIG. 10 is a sectional view of the push-pull switch operated in the same direction. FIG. 11 is a fourth embodiment of the present invention. FIG. 12 is a sectional view of a conventional push-pull switch. FIG. 14 is a sectional view of the conventional push-pull switch.
DESCRIPTION OF SYMBOLS 1 Case 1A Protrusion part 1B Holding part 2,2A, 2B Fixed contact 3,3A, 3B Fixed contact 4,4A, 4B Fixed contact 5 Operation body 5A Spring insertion part 5B Operation part 5C Holding part 5D Spring insertion part lower surface 5E Spring insertion Part top surface 5F, 5G Moderation cam 5H Engagement part 6 Movable contact piece 6A, 6B Movable contact 6C Center part 7 Cover 7A Hole 7B Back surface 7C Holding part 8 Coil spring 9 Moderation spring 9A Moderation protrusion 9B Support part 10 Movable contact piece 10A, 10B Movable contact 11 Movable contact piece 11A, 11B Movable contact 20 Operation key 20A, 20B Operation surface 20C Guide part 20D Guide hole 20E Support part

Claims (5)

A case made of an insulating material with an open top surface provided with a plurality of metal material fixed contacts on the inner side wall and an upward protruding portion on the inner bottom surface, and a spring insertion portion and an operation portion protruding from the case. The operation body accommodated in the case so as to be movable up and down, a movable contact piece made of an elastic metal material that is held on the side surface of the operation body and contacts and separates from the fixed contact, and a hole through which the operation portion of the operation body is inserted A push comprising a cover that covers the open part of the case and a spring that is inserted in a slightly bent state into the spring insertion part of the operating body, with its lower end abutting on the protrusion of the case and its upper end also abutting against the back surface of the cover. Pull switch. The push-pull switch according to claim 1, wherein a plurality of fixed contacts are implanted in the case by insert molding. A moderation cam having a moderation protrusion is held by the case and the cover, and a moderation cam that engages the moderation protrusion and performs a moderation action is provided on the operation body, or the operation body holds the moderation spring and the case The push-pull switch according to claim 1 or 2, wherein the cover is provided with the moderation cam. The push-pull switch according to any one of claims 1 to 3, wherein a plurality of fixed contacts are implanted on a plurality of surfaces of the case inner side wall, and a plurality of movable contact pieces are held by the operating body. The push-pull switch according to any one of claims 1 to 4, wherein an engagement portion is provided at a tip of the operation portion, and an operation key is engaged with the engagement portion.

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