JP3544778B2 - Slide operation type switch - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a slide operation type switch that performs an on / off switching operation by sliding a movable contact with a fixed contact by sliding an operation body with an operator's finger or the like.
[0002]
[Prior art]
Conventionally known slide operation type switches include an operation body manually operated by an operator, a movable contact piece held by the operation body, a plurality of fixed contact pieces provided on a substrate, and a movable contact piece. The operation body is constituted by a frame or the like surrounding the piece or the fixed contact piece, and the operation body is reciprocated with the opposing inner walls of the frame as sliding surfaces. Then, in use, when the operator slides the knob of the operating body protruding from the frame with a finger or the like, the movable contact selectively contacts and separates with the fixed contact in conjunction with the operating body. A switching operation is performed.
[0003]
[Problems to be solved by the invention]
By the way, in such a slide operation type switch, in order to enhance the operation feeling of the operating body, it is important to slide the operating body with respect to the frame without rattling. Since the operating body is guided by two opposing inner surfaces of the frame body, it is necessary to strictly control the size of the operating body and the frame body including these two guide portions. There was a problem that costs would rise. In particular, when the frame is made of a metal plate, the two sliding surfaces serving as guide surfaces must be bent in parallel on the metal plate, so that the problem of play of the operation body becomes significant.
[0004]
Even if the dimensional accuracy of the operating body and the frame body can be improved, when the operator slides the knob of the operating body with a finger or the like, the rotating force of the operating body around the knob is used. , One side surface of the operating body that slides on the guide surface far from the knob portion is unevenly worn due to the difference in the moments acting on the two guide surfaces. It was difficult to get rid of it.
[0005]
The present invention has been made in view of such a situation of the related art, and an object of the present invention is to provide a slide-operation-type switch that has a simple configuration, prevents backlash of an operation body, and has a good operation feeling. is there.
[0006]
[Means for Solving the Problems]
According to the present invention, one side surface of the frame is sandwiched between the shielding plate provided on the operating body and the driving portion, and a gap is formed between the driving portion and the other side surface of the frame. In this way, one side of the frame closer to the knob of the operating body is sandwiched between the shield plate and the drive, and a gap is formed between the other side of the frame farther from the knob and the drive. In this case, the guide portion of the operating tool only needs to be located at one position near the knob, so that high dimensional accuracy is not required for each component, and play of the operating tool can be reduced.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
In the slide operation type switch according to the present invention, a fixed contact piece provided on the substrate, a movable contact piece that can be brought into contact with and separated from the fixed contact piece, a frame surrounding the fixed contact piece and the movable contact piece, A slidable operating body for holding a contact piece, wherein the operating body includes a driving unit that reciprocates in the frame, and a driving unit that moves outward from the driving unit through an opening formed on one side surface of the frame. And a shielding plate for closing the opening from the side of the knob. One side surface of the driving unit and one side surface of the frame body are sandwiched by the shielding plate, A gap was formed between the other side and the other side of the frame.
[0008]
The frame may be made of a synthetic resin or a metal plate, but when a cover made of a metal plate is used as the frame, a sliding piece bent on one side of the cover is driven with the shielding plate of the operating body. When the cover is sandwiched between the parts, static electricity charged to the operator can be released from the sliding piece of the cover.
[0009]
Further, the shielding plate may be in surface contact with one side surface of the frame, but when a projection is formed on the shielding plate, the contact area between the shielding plate and one side surface of the frame is reduced, and Appropriate elasticity is provided, and the operation feeling of the operation body can be improved.
[0010]
【Example】
FIG. 1 is a perspective view of a slide operation type switch, FIG. 2 is a longitudinal sectional view of the switch, FIG. 3 is a transverse sectional view of the switch, and FIG. 4 is an exploded perspective view of the switch. FIG. 1 is a diagram showing a slide operation type switch according to an embodiment, which includes a wafer 1 formed of synthetic resin, an operation body 2 formed of synthetic resin, and a pair of movable contact pieces 3 held by the operation body 2. And a cover 4 made of a metal plate.
[0011]
The wafer 1 has a shape in which an upper surface and both side surfaces are opened, and a plurality of fixing contact pieces 6 are erected on a substrate 5 on the bottom surface. These fixed contact pieces 6 are obtained by applying a noble metal plating to the surface of a copper plate, and portions protruding from the lower surface of the substrate 5 are terminals 6a. The fixed contact pieces 6 are arranged in two rows inside the wafer 1, and are separated from each other at a predetermined interval in each row. Further, two rows of ridges 7 parallel to each other are formed in the inside of the wafer 1 in correspondence with the respective fixed pieces 6, and these ridges 7 are integrally formed when the fixed piece 6 is outsert to the wafer 1. Is done. Each fixed contact piece 6 is exposed in one side surface of the jetty 7, but the portion excluding this exposed surface, that is, all fracture surfaces including the upper end are covered with the jetty 7, and the other side surface of the jetty 7 Has a plurality of cam ridges 7a.
[0012]
The operating body 2 is integrally formed with a prismatic driving unit 2a, a knob 2b protruding from one side surface of the driving unit 2a, and a shielding plate 2c located between the driving unit 2a and the knob 2b. A hemispherical projection 2d is formed on the back surface of the shielding plate 2c. A clip-shaped movable contact piece 3 is held inside the drive unit 2a, and a plurality of contacts 3a are provided on each movable contact piece 3 so as to face each other. The movable contact piece 3 is formed of an elastic material such as phosphor bronze, and is inserted so as to sandwich both side surfaces of the jetty 7.
[0013]
The cover 4 forms a frame, and each side of the rectangular upper surface is bent at a right angle. The cover 4 is integrated with the wafer 1 so as to cover the open end of the wafer 1, and the drive unit 2 a of the operation body 2 is disposed inside the cover 4. The portion of the cover 4 bent to one side in the longitudinal direction forms a pair of sliding pieces 4a, and an opening 8 is formed between the sliding pieces 4a. The knob 2b and the shielding plate 2c of the operating body 2 protrude from the opening 8 to the outside of the cover 4, and the shielding plate 2c is set to a size that can cover the opening 8. As shown in FIGS. 2 and 3, both sliding pieces 4a of the cover 4 are sandwiched between the projection 2d of the shielding plate 2c and one side surface of the driving unit 2a facing the shielding plate 2c. A gap S is formed between the side surface and the cover 4. A self-standing piece 4b is formed in a portion of the cover 4 bent in the lateral direction, and when the slide operation type switch is mounted on a printed board (not shown), the self-standing piece 4b is connected to a grounding land of the printed board. Soldered.
[0014]
Next, the operation of the slide operation type switch configured as described above will be described. When the operator slides the knob 2b of the operating body 2 projecting from the wafer 1 with a finger or the like, the two movable contact pieces 3 held by the driving unit 2a move in the longitudinal direction of the corresponding jetty 7. At this time, the shield plate 2c of the operating body 2 and one side surface of the drive unit 2a sandwich the sliding piece 4a of the cover 4, and the other side surface of the drive unit 2a and the cover 4 are not in contact with each other while maintaining the gap S. Therefore, the operating body 2 reciprocates using only the sliding piece 4a of the cover 4 as a guide surface. As a result, one contact 3a of the movable contact 3 is selectively brought into contact with and separated from the plurality of fixed contacts 6 to perform an on / off switching operation, and the other contact 3a of the movable contact 3 is connected to the plurality of cams. The operator is selectively disengaged from the mountain 7a, and the operator can confirm that the on / off switching operation has been performed with a click feeling.
[0015]
As described above, according to the slide operation type switch according to the present embodiment, the sliding piece 4a of the cover 4 close to the knob 2b of the operating body 2 is sandwiched between the shielding plate 2c and the driving unit 2a, and the knob is Since a gap S is formed between the side surface of the cover 4 farther from the cover 2b and the driving portion 2a, only one portion for guiding the operating body 2 is provided on the sliding piece 4a near the knob portion 2b. The required dimensional accuracy can be suppressed, the manufacturing cost can be reduced, and the play of the operation body 2 can be reduced. In addition, since the projection 2d is formed on the shielding plate 2c, the contact area between the shielding plate 2c and the sliding piece 4a is reduced, and the shielding plate 2c is provided with appropriate elasticity, thereby improving the operation feeling of the operating body 2. You can do it. Further, even if the operator is charged with static electricity, the static electricity can be released from the sliding piece 4a of the cover 4 to the ground land of the printed circuit board via the self-supporting piece 4b, so that the static electricity can be transferred to the movable contact piece 3 or the like. It can be reliably prevented from flowing into the fixed contact piece 6.
[0016]
In the above embodiment, the description has been given of the slide operation type switch of the double type (for two circuits) having six groups of fixed contact pieces in two rows and two movable contact pieces 3. The invention is not limited to two stations, and can be applied to a single station (one station) or three or more stations.
[0017]
Further, in the above embodiment, the horizontal type slide operation type switch in which the operation body 2 moves in the horizontal direction has been described. However, the present invention is also applied to a vertical type slide operation type switch in which the operation body 2 moves in the vertical direction. It goes without saying that you can do it.
[0018]
Further, in the above embodiment, the case where the projection 2d formed on the shielding plate 2c of the operating body 2 is brought into contact with the sliding piece 4a of the cover 4 has been described, but the flat shielding plate 2c having no projection 2d is described. May be brought into contact with the sliding piece 4a.
[0019]
【The invention's effect】
The present invention is implemented in the form described above, and has the following effects.
[0020]
By clamping one side of the frame closer to the knob of the operation body between the shield plate and the drive, and forming a gap between the other side of the frame farther from the knob and the drive, Since only one guide portion of the operating body is closer to the knob, high dimensional accuracy is not required for each component, and play of the operating body can be reduced.
[0021]
When a cover made of a metal plate is used as a frame, and a sliding piece bent on one side of the cover is sandwiched between a shield plate of the operating body and a driving section, static electricity charged to the operator is slid on the cover. It can be released from the piece and can take countermeasures against static electricity.
[0022]
Also, when the protrusion formed on the shielding plate is brought into contact with one side surface of the frame, the contact area between the shielding plate and one side surface of the frame is reduced, and the shielding plate is provided with appropriate elasticity. The operation feeling of the body can be improved.
[Brief description of the drawings]
FIG. 1 is a perspective view of a slide operation type switch according to an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of the switch.
FIG. 3 is a cross-sectional view of the switch.
FIG. 4 is an exploded perspective view of the switch.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Wafer 2 Operation body 2a Driving part 2b Knob part 2c Shield plate 2d Projection 3 Movable contact piece 4 Cover 4a Sliding piece 4b Self-standing piece 5 Substrate 6 Fixed contact piece 8 Opening S Gap

Claims (3)

A fixed contact piece provided on the substrate, a movable contact piece that can be brought into contact with and separated from the fixed contact piece, a frame surrounding the fixed contact piece and the movable contact piece, and a slidable operation for holding the movable contact piece With the body,
A driving unit that reciprocates in the frame, a knob that protrudes outward from the driving unit through an opening formed on one side surface of the frame, and an opening that opens from the knob. And a shielding plate for closing the
A slide wherein one side of the drive unit and the shielding plate sandwich one side of the frame, and a gap is formed between the other side of the drive and the other side of the frame. Operation type switch. 2. The slide according to claim 1, wherein the frame comprises a cover made of a metal plate, and a sliding piece bent on the cover is sandwiched between one side surface of the drive section and the shielding plate. Operation type switch. The slide operation type switch according to claim 1, wherein a protrusion that contacts one side surface of the frame is formed on the shielding plate.

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