JP6037181B2 - Slide switch - Google Patents

Description

  The present invention relates to a slide switch.

  Conventionally, a slide switch is known as a switch for switching a circuit by manual operation (see, for example, Patent Document 1). As shown in FIGS. 12 and 13, the slide switch 101 described in Patent Document 1 has a wafer 102 in which a pair of piers 102 b is provided on a substrate 102 a and a conductive portion exposed at one end of one side of the pier 102 b. The fixed contact piece 103 formed integrally with the wafer 102, the fixed contact piece 104 formed integrally with the wafer 102 so that the conductive portion is exposed at the other end of one side of the jetty 102b, and the middle part of one side of the jetty 102b. , A fixed contact piece 105 integrally formed on the wafer 102 so as to expose the conductive portion, a movable contact piece 106 that reciprocates across the protruding end of the jetty 102b, an operating body 107 that houses the movable contact piece 106, and a wafer 102 is provided with a cover 108 that holds the operating body 107 so as to reciprocate along the jetty 102b.

  The movable contact piece 106 has a contact 106a extending in a direction intersecting the longitudinal direction and the width direction of the jetty 102b on one end side, and in a direction intersecting the longitudinal direction and the width direction of the jetty 102b on the other end side. An extending contact 106b is provided.

  The fixed contact pieces 103 to 105 are configured such that when the movable contact piece 106 is moved to one end side of the jetty 102 b, the contact 106 b contacts the fixed contact piece 104 and the contact 106 a contacts the fixed contact piece 105. When the movable contact piece 106 is moved to the other end side of the jetty 102 b, the contact 106 b contacts the fixed contact 105 and the contact 106 a contacts the fixed contact 103.

  That is, in the slide switch 101, when the movable contact piece 106 is moved to one end side of the jetty 102b by operating the operating body 107, the fixed contact pieces 104 and 105 are turned on and the fixed contact pieces 103 and 105 are not turned on. When the operating body 107 is operated to move the movable contact piece 106 to the other end side of the jetty 102b, the fixed contact pieces 103 and 105 are brought into conduction and the fixed contact pieces 104 and 105 are brought out of conduction.

  In addition, when static electricity is applied to such a slide switch 101, according to Patent Document 1, even if the operator is charged with static electricity, printing is performed from the operating body 107 through the metal plate cover 108. Since static electricity can be released to the ground lands of the substrate, static electricity can be prevented from flowing into the movable contact piece 106 and the fixed contact piece 104.

JP-A-9-237546

In the above-described slide switch 101, when the applied static electricity reaches the cover 108, the operating body whose distance between the lower end portion of the cover 108 and the lower end portion of the movable contact piece 106 is short, that is, the static electricity application point. Since the creeping distance from the tip of 107 to the movable contact piece 106 is not always sufficient, there is a possibility that static electricity may propagate to the movable contact piece 106, thereby causing a failure of a device or the like on which the slide switch 101 is mounted. There is a risk of coming. Further, since the movable contact piece 106 is not completely surrounded in the portion where the operating body 107 accommodates the movable contact piece 106, the creepage distance cannot be said to be sufficient for this portion.

  In addition, the slide switch 101 described above is configured so that the contact pressure of the contact 106a of the movable contact 106 with respect to the conductive portions of the fixed contact piece 103 and the fixed contact piece 105, and the contact pressure of the contact 106b with respect to the conductive portion of the fixed contact piece 104. If the spring span of the contacts 106a and 106b is set to be long in order to make the contact suitable, the movable contact piece 106 becomes larger in the height direction, so that the slide switch 101 cannot be reduced in height. The problem in miniaturizing 101 remains.

  SUMMARY An advantage of some aspects of the invention is to provide a slide switch having improved electrostatic withstand voltage and to reduce the size of the slide switch.

In order to achieve the above object, a slide switch according to the present invention includes a housing having a guide portion protruding from a housing base, a first conduction portion, and the first switch at one end of one side surface of the guide portion. The housing includes a first terminal incorporated in the housing so that the conductive portion is exposed, and a second conductive portion, and the second conductive portion is exposed at the other end portion of one side surface of the guide portion. A second terminal incorporated, a common conducting portion, and a common terminal incorporated in the housing such that the common conducting portion is exposed over substantially the entire other side of the guide portion; and a projecting end portion of the guide portion A contact piece that reciprocates across the slider, a slider that engages with the contact piece, and a cover that holds the slider in a reciprocating manner along the guide portion on the housing. The slider and the cover are formed of a non-conductive resin material, and the slider includes a box-shaped housing portion that houses the contact piece and the guide portion, and a lever portion that protrudes from the housing portion. It is characterized by having.

With this configuration, the slide switch according to the present invention is formed by using a non-conductive resin material for a cover that is conventionally formed of a metal plate, and a slider-like box-shaped housing portion formed of a non-conductive resin material. By accommodating the contact piece, it is possible to increase the creeping distance from the tip of the lever portion, which becomes the point of application of static electricity when operating the slide switch, to the first terminal, the second terminal, and the common terminal. The electrostatic withstand voltage is improved.

Further, in the slide switch according to the present invention, the contact piece includes a longitudinal portion extending along a protruding end portion of the guide portion, and extends from both end portions of the longitudinal portion toward an intermediate portion, so that the guide The second terminal is in contact with the first conduction part of the first terminal when moved to one end side of the part, and the second conduction of the second terminal when moved to the other end side of the guide part. A pair of leaf spring-like switching contact pieces that contact the contact portion, and a pair of leaf spring-like contact portions that extend from both ends of the longitudinal portion toward the intermediate portion and constantly contact the common conducting portion of the common terminal. It is preferable to have a common piece.

  With this configuration, in the slide switch according to the present invention, the pair of leaf spring-like switching contact pieces extending from both end portions of the longitudinal portion toward the intermediate portion are exposed at one end portion of one side surface of the guide portion. The first conductive portion of one terminal or the second conductive portion of the second terminal exposed at the other end portion of one side surface of the guide portion alternatively contacts the intermediate portion from both ends of the longitudinal portion. A pair of leaf spring-shaped common contact pieces extending toward the surface always contacts the common conducting portion of the common terminal exposed on the other side surface of the guide portion. Therefore, even if the slide switch according to the present invention obtains an appropriate contact pressure by increasing the spring span of the switching contact piece and the common contact piece, the contact piece does not increase in the height direction. Since it is not necessary to increase the height in the height direction, the height is reduced.

  Further, in the slide switch according to the present invention, the first conductive portion, the second conductive portion, and the common conductive portion are configured so that positions in the protruding direction of the guide portion do not overlap, and the contact piece is In addition, it is preferable to have a pressing portion that clamps the guide portion in the width direction in cooperation with either the switching contact piece or the common contact piece.

  With this configuration, the slide switch according to the present invention reduces the width dimension of the guide portion because the position of the common conduction portion with respect to the first conduction portion and the second conduction portion does not overlap in the guide portion protruding direction. Therefore, the slide switch can be further downsized.

  In addition, since the pressing portion cooperates with either the switching contact piece or the common contact piece to sandwich the guide portion in the width direction, the contact piece does not tilt in the width direction of the guide portion, and the first terminal The switching contact piece can be brought into stable contact with the first conduction portion and the second conduction portion of the second terminal, and the common contact piece is brought into stable contact with the common conduction portion of the common terminal. Can do.

  In the slide switch according to the present invention, it is preferable that the first conductive portion, the second conductive portion, and the common conductive portion are configured so that positions in the longitudinal direction of the guide portion overlap each other.

  With this configuration, in the slide switch according to the present invention, the position of the common conducting portion with respect to the first conducting portion and the second conducting portion overlaps in the guide portion longitudinal direction, so that the size of the guide portion in the longitudinal direction is reduced. Therefore, the slide switch can be further reduced in size.

  According to the present invention, the electrostatic withstand voltage is improved by increasing the creepage distance from the distal end portion of the lever portion, which is an application point of static electricity, to the first terminal, the second terminal, and the common terminal while being small. A slide switch can be provided. In addition, the size of such a slide switch can be reduced.

It is the perspective view which faced the housing, the contact piece, the slider, and the cover which comprise the slide switch which concerns on embodiment of this invention from the one side upper direction. It is a cross-sectional view of a slide switch according to an embodiment of the present invention. It is the perspective view which faced what assembled | attached the 1st terminal, the 2nd terminal, and the common terminal to the housing which comprises the slide switch which concerns on embodiment of this invention from the other side lower side. It is a side view of the state which assembled | attached the 1st terminal, the 2nd terminal, and the common terminal to the housing which comprises the slide switch which concerns on embodiment of this invention, (a) is the figure which faced from one side, (b ) Is a view from the other side. BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of the 1st terminal, 2nd terminal, and common terminal which comprise the slide switch which concerns on embodiment of this invention, (a) is the figure which faced from the one side upper side, (b) is the other side lower side It is a figure that came from. It is the perspective view which faced the contact piece which comprises the slide switch which concerns on embodiment of this invention from the other side lower side. It is a side view of the contact piece which comprises the slide switch which concerns on embodiment of this invention, (a) is the figure which faced from one side, (b) is the figure which faced from the other side. It is the perspective view which faced the slider which comprises the slide switch which concerns on embodiment of this invention from the one side lower side. It is the perspective view which looked at what assembled the slider etc. in the housing which comprises the slide switch which concerns on embodiment of this invention from one side upper direction. It is the perspective view which faced from the one side lower part which comprises the slide switch which concerns on embodiment of this invention. It is the perspective view which looked at what assembled | attached the slider, the cover, etc. to the housing which comprises the slide switch which concerns on embodiment of this invention from one side upper direction. It is the perspective view which faced the single body of the wafer, movable contact piece, operation body, and cover which comprise the conventional slide switch from the one side upper side. It is a cross-sectional view of a conventional slide switch.

  Hereinafter, a slide switch according to an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 to 5, the slide switch 1 according to the present embodiment includes a housing 10 in which a guide portion 12 extending along the housing base portion 11 is provided on the housing base portion 11, and a first conducting portion 21. A first terminal 20 incorporated in the housing 10 so that the first conductive portion 21 is exposed at one end of one side surface of the guide portion 12, and a second conductive portion 31. The second terminal 30 incorporated in the housing 10 so that the second conductive portion 31 is exposed at the other end of the one side surface, and the common conductive portion 41, and the common conductive portion over the substantially entire length of the other side surface of the guide portion 12. The common terminal 40 incorporated in the housing 10 so that 41 is exposed, the contact piece 50 reciprocating across the projecting end of the guide portion 12, the slider 60 engaged with the contact piece 50, and the housing 1 It includes a cover 70 which holds movable back and forth, the along the slider 60 to the guide portion 12 on.

  As shown in FIGS. 3, 4 (a), and 4 (b), the housing 10 is a member that projects upward from the central portion of the housing base 11, and a housing base 11 that is formed in a substantially rectangular shape in plan view. It has a guide portion 12 extending in the longitudinal direction, a hook portion 13 projecting upward from both end portions in the member longitudinal direction of the housing base portion 11, and projecting portions 14 projecting left and right from both edge portions in the member width direction of the housing base portion 11. Yes. The housing base part 11, the guide part 12, the hook part 13, and the protrusion part 14 which comprise the housing 10 are integrally shape | molded by injection-molding a nonelectroconductive resin material.

  As shown in FIGS. 4 (a), 4 (b), 5 (a), and 5 (b), the first terminal 20 is electrically integrated with the first conductive portion 21. It has a connecting portion 22, the first conducting portion 21 is flush with the side surface of the guide portion 12, and the first connecting portion 22 penetrates the housing base 11 in the member thickness direction to the outside. The housing 10 is insert-molded so as to protrude.

  As shown in FIG. 4A, FIG. 4B, FIG. 5A, and FIG. 5B, the second terminal 30 is a second electrically integrated with the second conducting portion 31. It has a connection part 32, the second conducting part 31 is flush with one side of the guide part 12, and the second connection part 32 penetrates the housing base 11 in the member thickness direction to the outside. The housing 10 is insert-molded so as to protrude.

  As shown in FIGS. 4A, 4B, 5A, and 5B, the common terminal 40 includes a common connection portion 42 that is electrically integrated with the common conduction portion 41. The common conducting portion 41 is flush with the other side surface of the guide portion 12 without being stepped, and the common connection portion 42 is insert-molded into the housing 10 so as to penetrate the housing base portion 11 in the member thickness direction and protrude outside. ing.

  The first connection part 22, the second connection part 32, and the common connection part 42 are electrically connected to, for example, a conductive layer of a substrate (not shown) by soldering.

  As shown in FIGS. 2, 4 (a), and 4 (b), the positions of the first conductive portion 21 and the second conductive portion 31 and the common conductive portion 41 do not overlap with each other in the protruding direction of the guide portion. It is configured as follows. More specifically, the first terminal 20, the second terminal 30, and the common terminal 40 have the vertical positions of the first conduction part 21, the second conduction part 31, and the common conduction part 41. It is incorporated in the housing 10 so as not to overlap.

  Further, as shown in FIGS. 2, 4 (a), and 4 (b), the first conductive portion 21, the second conductive portion 31, and the common conductive portion 41 are over-positioned with respect to the longitudinal direction of the guide portion. It is configured to wrap. More specifically, the first terminal 20, the second terminal 30, and the common terminal 40 are in the longitudinal direction of the guide portion of the first conduction portion 21, the second conduction portion 31, and the common conduction portion 41. It is incorporated in the housing 10 so that the positions overlap.

  As shown in FIGS. 2, 6, 7 (a), and 7 (b), the contact piece 50 includes a longitudinal portion 51 that extends along the protruding end portion of the guide portion 12, and one of the longitudinal portions 51. It extends from both end portions of the side edge portion toward the intermediate portion and contacts the first conducting portion 21 of the first terminal 20 when moved to one end side of the guide portion 12, and the other end of the guide portion 12. A pair of leaf spring-like switching contact pieces 52 that come into contact with the second conducting portion 31 of the second terminal 30 when moved to the side, and from both ends of the other side edge portion of the longitudinal portion 51 to the intermediate portion. A pair of leaf spring-like common contact pieces 53 that extend toward the common contact portion 41 of the common terminal 40 and are always in contact with each other.

  Further, as shown in FIG. 2, the contact piece 50 has a pressing portion 54 that holds the guide portion 12 in the width direction in cooperation with the switching contact piece 52. It is connected to both ends of the other side edge portion of the longitudinal portion 51, surrounds the common contact piece 53 from the lower side, and presses the other side surface of the guide portion 12. The longitudinal portion 51, the switching contact piece 52, the common contact piece 53, and the pressing portion 54 constituting the contact piece 50 are integrally formed of a metal plate.

  As shown in FIGS. 8 and 9, the slider 60 covers the contact piece 50 in a state straddling the guide portion 12 from the upper side and houses the contact piece 50 and the guide portion 12. And a lever portion 62 protruding upward from the housing portion 61. The accommodating part 61 and the lever part 62 which comprise the slider 60 are integrally shape | molded by injection-molding a nonelectroconductive resin material. The internal dimensions of the accommodating portion 61 are set such that the contact piece 50 is allowed to move in the longitudinal direction of the guide portion 12 and the contact piece 50 is not displaced in the front-rear direction, the left-right direction, and the up-down direction with respect to the accommodating portion 61. ing.

The accommodating portion 61 surrounds the contact piece 50 and the guide portion 12 over the entire circumference. Therefore, when static electricity of a high voltage is applied to the lever portion 62, the static electricity propagates through the outer surface of the housing portion 61 and reaches the contact piece 50 after passing through the lower end of the housing portion 61. That is, the creeping distance from the lever portion 62 to the contact piece 50 is longer by the amount passing through the lower end of the housing portion 61.

  In the slider 60, when the switching contact piece 52 of the contact piece 50 comes into contact with the first conducting portion 21 of the first terminal 20, one end surface of the housing portion 61 is a hook portion at one end portion in the member longitudinal direction of the housing base 11. 13, when the switching contact piece 52 of the contact piece 50 comes into contact with the second conducting portion 31 of the second terminal 30, the other end surface of the housing portion 61 is the other end portion of the housing base 11 in the member longitudinal direction. The movement is restricted by contacting the hook portion 13.

  As shown in FIGS. 10 and 11, the cover 70 covers the housing portion 61 and the housing base portion 11 by covering the housing portion 61 of the slider 60 housing the contact piece 50 and the housing base portion 11 of the housing 10 from above. It is formed in a box shape. The cover 70 is molded by injection molding a non-conductive resin material.

  The cover 70 has an opening 71 through which the lever portion 62 of the slider 60 is inserted at the center upper portion, and has engagement holes 72 for engaging the hook portions 13 of the housing 10 at both upper ends in the longitudinal direction. The lower edge portion has a first recess 73 into which the end portion of the housing base 11 in the longitudinal direction of the member is fitted, and the second recess 74 into which the protruding portion 14 protruding from the housing base 11 is fitted into both edges in the width direction. have.

  The internal dimensions of the cover 70 and the shape of the opening 71 are set so as to allow the slider 60 to move in the longitudinal direction of the guide portion 12 and to prevent the slider 60 from shifting in the left-right direction and the up-down direction with respect to the cover 70. ing.

  In the slide switch 1 according to the present embodiment, when the contact piece 50 is moved to the one end side in the member longitudinal direction of the housing base 11 by operating the slider 60, the first conducting portion 21 of the first terminal 20. The switching contact piece 52 comes into contact with the common terminal 40 and the first terminal 20 becomes conductive through the contact piece 50.

  Further, in the slide switch 1 according to the present embodiment, when the contact piece 50 is moved to the other end side in the member longitudinal direction of the housing base 11 by operating the slider 60, the second terminal 30 of the second terminal 30 is moved. The switching contact piece 52 comes into contact with the conducting portion 31 and the common terminal 40 and the second terminal 30 are brought into conduction through the contact piece 50.

In the slide switch 1 according to the present embodiment, the housing 10, the slider 60, and the cover 70 are formed of a resin material, and the contact piece 50 is accommodated in the box-shaped accommodation portion 61 of the slider 60. Since the creeping distance from the tip of the lever portion 62, which is the point of application of static electricity when the operation is performed, to the first terminal 20, the second terminal 30, and the common terminal 40 can be increased. The electrostatic withstand voltage is improved.

  In the slide switch 1 according to the present embodiment, a pair of leaf spring-like switching contact pieces 52 extending from both end portions of the longitudinal portion 51 toward the intermediate portion are exposed at one end portion of one side surface of the guide portion 12. The first conductive portion 21 of the first terminal 20 or the second conductive portion 31 of the second terminal 30 exposed at the other end portion of the one side surface of the guide portion 12 is selectively contacted and longitudinally connected. A pair of leaf spring-shaped common contact pieces 53 extending from both end portions of the portion 51 toward the intermediate portion are always in contact with the common conducting portion 41 of the common terminal 40 exposed over the substantially entire length of the other side surface of the guide portion 12. . Accordingly, in the slide switch 1 according to the present embodiment, even when the spring span of the switching contact piece 52 and the common contact piece 53 is lengthened to obtain an appropriate contact pressure, the contact piece 50 is in the height direction. Since it does not become large, it can be lowered.

  In the slide switch 1 according to the present embodiment, the position of the common conductive portion 41 with respect to the first conductive portion 21 and the second conductive portion 31 does not overlap in the guide portion protruding direction (height direction). Since the width dimension of 12 can be reduced, the slide switch can be miniaturized.

  In the slide switch 1 according to the present embodiment, the position of the common conducting portion 41 with respect to the first conducting portion 21 and the second conducting portion 31 overlaps in the longitudinal direction of the guide portion. Since the dimensions can be reduced, the slide switch can be miniaturized.

  In the slide switch 1 according to the present embodiment, since the pressing portion 54 cooperates with the switching contact piece 52 to sandwich the guide portion 12 in the width direction, the contact piece 50 does not tilt in the width direction of the guide portion 12 and the first The switching contact piece 52 can be brought into contact with the first conducting portion 21 of the terminal 20 and the second conducting portion 31 of the second terminal 30 in a stable state, and the common conducting portion 41 of the common terminal 40 is common. The contact piece 53 can be brought into contact in a stable state.

  As another embodiment, the vertical positions of the first conductive portion, the second conductive portion, and the common conductive portion are reversed, and the vertical positions of the switching contact piece and the common contact piece are reversed, and the pressing portion is It can also be set as the structure which clamps a guide part in the width direction in cooperation with a common contact piece.

  The present invention can be implemented in various slide switches, and is useful because it can improve electrostatic withstand voltage and can be downsized.

DESCRIPTION OF SYMBOLS 1 Slide switch 10 Housing 11 Housing base part 12 Guide part 20 1st terminal 21 1st conduction | electrical_connection part 30 2nd terminal 31 2nd conduction | electrical_connection part 40 Common terminal 41 Common conduction | electrical_connection part 50 Contact piece 51 Vertical passage part 52 Switching connection Piece 53 Common contact piece 54 Pressing portion 60 Slider 61 Housing portion 62 Lever portion 70 Cover

Claims (4)

A housing having a guide portion protruding from the housing base;
A first terminal that has a first conduction part and is incorporated in the housing so that the first conduction part is exposed at one end of one side surface of the guide part;
A second terminal incorporated in the housing so as to expose the second conducting part at the other end of the one side surface of the guide part;
A common terminal that has a common conduction part and is incorporated in the housing so that the common conduction part is exposed on the other side surface of the guide part;
A contact piece that reciprocates across the projecting end of the guide part;
A slider that engages the contact piece;
A cover that holds the slider in a reciprocating manner along the guide portion on the housing;
The housing, the slider and the cover are formed of a non-conductive resin material,
The slide switch includes a box-shaped accommodation portion that accommodates the contact piece and the guide portion, and a lever portion that protrudes from the accommodation portion. The contact piece is
A longitudinal portion extending along the protruding end of the guide portion;
It extends from both end portions of the longitudinal portion toward the intermediate portion and contacts the first conducting portion of the first terminal when moved to one end side of the guide portion. A pair of leaf spring-like switching contact pieces that come into contact with the second conducting portion of the second terminal when moved to the end side;
A pair of leaf spring-like common contact pieces extending from both ends of the longitudinal portion toward the intermediate portion and always contacting the common conducting portion of the common terminal. The slide switch according to claim 1. The first conduction part, the second conduction part, and the common conduction part are configured so that positions with respect to the guide part protruding direction do not overlap,
The said contact piece has a press part which clamps the said guide part in the width direction in cooperation with any one of the said switching contact piece or the said common contact piece, The Claim 1 or Claim 2 characterized by the above-mentioned. The slide switch described in 1.   The first conductive portion, the second conductive portion, and the common conductive portion are configured so that positions in the longitudinal direction of the guide portion overlap each other. The slide switch according to item 1.

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