JP2009070672A - Push-button switch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a push-button switch of horizontal push type in which a good operating feeling can be obtained, and which is thin and of low cost and easy to assemble. <P>SOLUTION: The push-button switch is provided with a housing 1 of insulating property having a housing portion 1a, an operating member 8 of insulating property having a pushing portion 8a protruding outside from the side of the housing and an operating portion 8b of a cantilever structure protruding from the pushing portion into the housing portion, a guide member 9 of insulating property which is housed in the housing portion and moves and guides the operating member in the pushing direction of the pushing portion, and a lid 7 of metallic plate which covers the housing portion. A movable contact 5 of a switch contact installed at the bottom part of the housing portion is made of a dome-shape metal plate and has a projection portion 5a protruding in the lid direction at the top part. The guide member has a drive portion 9d that protrudes facing the operating portion, and the drive portion is provided with an inclined portion 9g that contacts the top end side of the operating portion from the lid side and converts the pushing force of the pushing portion in the direction of the movable contact and a recessed portion 9f to escape the projection portion, and makes contact the top end side of the operating portion to the inclined portion and the projection portion. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a thin, lateral push type pushbutton switch used for portable electronic devices such as a mobile phone, a digital camera, a portable music player, and a PDA.

  2. Description of the Related Art Conventionally, a lateral push type push button switch that converts a lateral direction (horizontal direction) press to a vertical direction (vertical direction) is known. As an example of this conventional push button switch, a push button switch described in Patent Document 1 is shown in FIGS. 9 is a sectional view showing a conventional push button switch, FIG. 10 is a plan view showing the push button switch of the conventional example, FIG. 11 is a plan view showing a state in which the lid of the push button switch of the conventional example is removed, and FIG. It is sectional drawing which shows the operation state of an example pushbutton switch.

  9 to 12, reference numeral 11 denotes a housing, which is made of an insulating material such as synthetic resin, and is formed in a box shape with an upper surface opening having a storage portion 11a. A pair of fixed contacts 12a and 12b made of a metal plate are partly exposed on the inner bottom surface by a method such as insert molding or the like and are integrally embedded in the inner bottom portion of the storage portion 11a. External terminals 13 a and 13 b led out from the pair of fixed contacts 12 a and 12 b are formed to protrude below the pair of side surfaces facing the housing 11. On the other side surface of the housing 11, a window portion 11b communicating with the storage portion 11a is provided. In addition, an engagement convex portion 11 c that protrudes outward is formed in the square portion of the housing 11.

  Mounted on the pair of fixed contacts 12a and 12b of the storage portion 11a is a movable contact 14 which is bent in a dome shape by a metal plate so as to be reversible. The movable contact 14 is opposed to one fixed contact 12a whose top bottom surface is exposed on the inner bottom surface, maintaining a certain distance, and the outer peripheral portion is omitted in the drawing but is exposed on the inner bottom surface of the storage portion 11a. It arrange | positions in the state which contacted the other fixed contact 12b.

  A dustproof sheet 15 made of an insulating resin sheet material such as polyamide resin is disposed on the upper surface side of the movable contact 14. The dustproof sheet 15 is mounted on the upper surface of the storage portion 11a of the housing 11 and fixed with an adhesive or the like so as to cover the opening of the storage portion 11a, and each contact portion disposed in the storage portion 11a. Prevents intrusion of debris, foreign objects, etc.

  Reference numeral 16 denotes an operation member made of an insulating material such as synthetic resin, and a pressing portion 16a protruding from the window portion 11b of the housing 11 and an operating portion formed to protrude from the pressing portion 16a into the storage portion 11a. 16b, and a slide portion 16d formed to be connected to the pressing portion 16a so as to surround both side portions and the rear portion of the operation portion 16b through an opening portion 16c provided around the operation portion 16b. The operating member 16 is disposed on the upper surface side of the dustproof sheet 15 disposed in the storage portion 11a, and the pressing portion 16a protrudes from the window portion 11b of the housing 11 and abuts as a free end of the operating portion 16d. A portion 16e is disposed opposite the top surface of the movable contact 14 with the dustproof sheet 15 in between, and a slide portion 16d is slidably housed in the housing portion 11a.

  Reference numeral 17 denotes a lid, which is formed by punching and bending a metal plate. The upper plate 17a is attached to the upper portion of the housing 11 and formed in a flat plate shape so as to cover the storage portion 11a. The four mounting legs are bent substantially at a right angle from the rectangular portion 17a and are suspended downward in an L shape. A locking piece is provided at the tip of the mounting leg, and the lid 17 is attached to the upper part of the housing 11 by locking the locking piece to the locking projection 11c provided at the square portion of the housing 11. It is done.

  At the center of the upper plate 17a, a guide portion is formed by cutting and raising the contact portion 16e of the operating portion 16b and guiding the operating portion 16b in the pressing direction of the movable contact 14. The guide portion includes an inclined portion 17b composed of a substantially 45-degree inclined surface in which the plate surface of the upper plate 17a is bent along the pressing direction of the operation member 16 into the housing portion 11a of the housing 11, and both sides of the inclined portion 17b. And a pair of connection portions 17c having a substantially triangular shape connected to the upper plate 17a. When the lid 17 is attached to the upper portion of the housing 11, the inclined portion 17 b and the connecting portion 17 c are disposed in an opening 16 c provided in the slide portion 16 d of the operation member 16. . At this time, the inclined portion 17b is disposed to face the contact portion 16e of the operating portion 16b of the operating member 16.

  In the pushbutton switch of the conventional example having the above configuration, in the free state shown in FIG. 9, the abutting portion 16 e of the operating portion 16 b of the operating member 16 abuts on the top surface of the top of the movable contact 14 via the dustproof sheet 15. Then, due to the synergistic action of the upward elastic urging force of the movable contact 14 and the inclined portion 17b of the lid body 17, the pressing portion is urged in the left direction (the direction opposite to the pressing direction of the pressing portion 16a). 16a protrudes outward. At this time, the outer periphery of the movable contact 14 is in contact with the fixed contact 12b, the top lower surface is separated from the fixed contact 12a, and the switch is in the OFF state.

  When the pressing portion 16a is pressed rightward on the paper surface from the free state shown in FIG. 9, the contact portion 16e of the operating portion 16b moves downward along the inclined portion 17b of the lid body 17 as shown in FIG. It is guided in a downward direction perpendicular to the pressing direction of the pressing portion 6 a, and presses the top surface of the movable contact 14 through the dustproof sheet 15. As a result, the movable contact 14 is inverted downward, the top lower surface comes into contact with the fixed contact 12a, the fixed contacts 12a and 12b are conductively connected, and the switch is turned on.

When the pressing of the pressing portion 16a is released from the operation state shown in FIG. 12, the movable contact 14 returns to the original free state, the top bottom surface is separated from the fixed contact 12a, and the conduction between the fixed contacts 12a and 12b is cut off. The switch turns off. At this time, the abutting portion 16e of the operating portion 16b is urged in the left direction on the paper surface along the inclined portion 17b of the lid body 17 by the urging force, and the pressing portion 16a protrudes outward, so that the free state shown in FIG. Return.
JP 2006-244977 A

  In the conventional pushbutton switch, an inclined portion that converts the pressing of the pressing portion of the operating member into the direction of the movable contact is formed by raising the central portion of the top plate of the lid, so that insulation is provided between the inclined portion and the movable contact. It is necessary to take a distance, and it is difficult to structurally reduce the height of the push button switch. In addition, a hole is opened at the center of the top plate of the lid, and the opening of the housing storage part is covered with a dustproof sheet, and dustproof measures are taken to prevent entry of dust, foreign matter, etc. into each contact part arranged in the storage part. It is necessary to take this, and the operation feeling of the push button switch is impaired by the dust-proof measure, and the number of parts increases, which causes a problem in cost and assemblability.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a lateral push type push button switch that can obtain a good operation feeling, is thin, and is easy to assemble. It is in.

  In addition, the conventional push button switch is a single operation type, but in recent years, in addition to the miniaturization and thinning of portable electronic devices, a two-stage operation type push button switch is strongly demanded. Accordingly, another object of the present invention is to provide a lateral push type pushbutton switch which can obtain a good operation feeling, is thin, inexpensive and easy to assemble.

  In order to achieve the above object, an invention according to claim 1 includes an insulating housing having a storage portion, a fixed contact provided at the bottom of the storage portion, and a movable contact installed on the fixed contact. And an insulating operation member having a pressing portion that is slidably stored in the storage portion and protrudes outward from a side portion of the housing, and an operating portion having a cantilever structure protruding from the pressing portion into the storage portion. And an insulating guide member that is housed in the housing portion and moves and guides the operation member in the pressing direction of the pressing portion, and a metal plate lid that is attached to the housing and covers the housing portion. A push button switch, wherein the movable contact is made of a dome-shaped metal plate, has a convex portion projecting in the direction of the lid on the top, and the guide member has a drive portion projecting facing the operating portion. And the drive unit is An inclined portion that abuts on the distal end side of the operating portion from the lid body side and converts the pressing of the pressing portion into a movable contact direction, and is opened in the operating portion direction and the movable contact direction, and the convex portion of the movable contact is A recess is provided to escape, and the tip end side of the operating part is brought into contact with the inclined part of the drive part and the convex part of the movable contact.

  In the invention according to claim 1 configured as described above, an inclined portion that converts the pressing of the pressing portion of the operating member into the movable contact direction is provided in the driving portion of the guide member, and therefore, between the inclined portion and the movable contact. The insulation distance can be made as small as possible or eliminated, and the push button switch can be reduced in height. Moreover, since the convex part which has the top part of a movable contact is escaped by the recessed part provided in the drive part, the thinness of a pushbutton switch is not impaired by the convex part of a movable contact. Further, the movable contact is pressed with a longer pressing stroke than the pressing stroke of the pressing portion while the distal end side of the operating portion slides on the inclined portion and the convex portion. Can be ensured, and a further reduction in the height of the pushbutton switch can be realized. Further, it is not necessary to take dust-proof measures as in the case of a conventional push button switch, the operational feeling of the push button switch can be improved, and the cost can be reduced and the assemblability can be improved by reducing the number of parts. Furthermore, the pressing load applied to the lid can be distributed over a wider area via the drive unit, and the lid is less likely to be deformed by the pressing load, so that the durability of the push button switch can be improved.

  According to a second aspect of the present invention, in the first aspect of the invention, the movable contact is installed in two upper and lower stages on the fixed contact, the convex portion is provided on the upper movable contact, and the upper movable contact A configuration in which different fixed contacts are provided at three locations on the outer peripheral portion of the outer peripheral portion and the lower movable contact and on the bottom portion side of the central portion is added.

  With such an additional configuration, a two-stage pushbutton switch can be realized.

  As described above, according to the present invention, it is possible to provide a lateral push type pushbutton switch that can obtain a good operation feeling, is thin, inexpensive, and easy to assemble. Further, it is possible to provide a two-stage push button switch that can obtain a good operation feeling, is thin, inexpensive, and easy to assemble.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 is a sectional view showing a pushbutton switch according to an embodiment of the present invention, FIG. 2 is an enlarged view of a portion A in FIG. 1, and FIG. 3 is a perspective view showing an exploded state of the pushbutton switch according to an embodiment of the present invention. 4 is a perspective view showing a disassembled state in which the push button switch according to the embodiment of the present invention is turned upside down, FIG. 5 is a perspective view showing the appearance of the push button switch according to the embodiment of the present invention, and FIG. It is a top view which shows the state which removed the cover body of the pushbutton switch by one embodiment of invention. In the following description, the arrow ab direction in FIG. 3 will be described as the front-rear direction of the pushbutton switch, the arrow cd direction as the left-right direction of the pushbutton switch, and the arrow ef direction as the up-down direction of the pushbutton switch.

  1 to 6, reference numeral 1 denotes a housing, which is made of an insulating material such as a synthetic resin, and is formed in a box shape having an upper surface opening shape having a storage portion 1a. The four upper corners of the inner bottom surface 1b of the housing 1 are provided with shallow upper movable contact support recesses 1c that are lowered by one step, and the inner bottom surface 1b of the housing 1 inside the upper movable contact support recesses 1c has a substantially deeper circular shape. The lower movable contact storage recess 1d is provided, and the left and right bent storage portions 1e projecting between the front and rear upper movable contact support recesses 1c are provided on the outer periphery of the lower movable contact storage recess 1d. Further, notches 1f and 1g are provided on the front and rear side walls of the housing 1, engagement recesses 1h are provided on the outer surfaces of the four corners of the housing 1, and lower portions are provided above the engagement recesses 1h. An inclined guide portion 1i that gradually expands outward is provided. Further, a plurality of shallow external connection terminal recesses 1j are provided on the outer peripheral portion of the outer bottom surface of the housing 1, and positioning pins 1k for mounting are projected from the inside of each external connection terminal recess 1j.

  The housing 1 is formed integrally with the first, second and third fixed terminals 2, 3 and 4 by insert molding. The first, second, and third fixed terminals 2, 3, and 4 are formed by punching and bending a metal plate, and are embedded and fixed to the bottom of the housing 1 in an insulated state. A part of the first fixed terminal 2 is substantially flush with the upper movable contact support recess 1c to form a common contact 2a as a first fixed contact. Part of the second fixed terminal 3 is the outer peripheral portion of the bottom surface of the lower movable contact housing recess 1d, and two locations inside the other two upper movable contact support recesses 1c arranged in the diagonal direction of the housing 1 The first selection contact 3a as the second fixed contact is formed so as to be substantially flush with the surface. A part of the third fixed terminal 4 is substantially flush with the center of the bottom surface of the lower movable contact housing recess 1d to form a second selection contact 4a as a third fixed contact. The first, second, and third fixed terminals 2, 3, and 4 are partially exposed to the predetermined external connection terminal recess 1j so as to be substantially flush with the common contact 2a, A first external connection terminal 2b, a second external connection terminal 3b, and a third external connection terminal 4b that are electrically connected to the first selection contact 3a and the second selection contact 4a are formed.

  1 to 4, reference numeral 5 is an upper movable contact, reference numeral 6 is a lower movable contact, and the upper movable contact 5 and the lower movable contact 6 are invertible formed by stamping and bending a metal plate. It consists of a dome-shaped metal plate. The dome-shaped upper movable contact 5 having a convex upper surface and a concave lower surface has a conical head shape with a convex upper surface at the top (center) and a concave lower surface, and protrudes in the lid direction (upward direction) described later. A pair of front and rear legs 5b that protrude from the outer peripheral part in the left-right direction are provided while having a convex part 5a. A dome-shaped lower movable contact 6 having a convex upper surface and a concave lower surface is provided with a bent portion 6a protruding in the left-right direction from the outer peripheral portion. Each bent portion 6a is formed in a U-shape opening upward. The upper movable contact 5 is supported by the upper movable contact support recess 1c through the four legs 5b, and the lower movable contact 6 is supported by the outer periphery of the bottom surface of the lower movable contact storage recess 1d. Then, the upper movable contact 5 and the lower movable contact 6 are installed in two upper and lower stages with a certain gap provided at the bottom of the housing 1a of the housing 1. In the installed state, the upper movable contact 5 is always in contact with the common contact 2a via the leg portion 5b, and the lower movable contact 6 is always in contact with the outer peripheral portion of the first selection contact 3a, and the central portion is located on the lower side. It faces the second selection contact 4a with a certain gap. Each bent portion 6 a of the lower movable contact 6 is fitted into the bent portion storage portion 1 e so that the upper portion faces the inner bottom surface 1 b of the housing 1.

  In FIGS. 1-5, the code | symbol 7 is a cover body and is formed by stamping and bending a metal plate. The lid body 7 is attached to the upper part of the housing 1, and has an upper plate 7a formed in a rectangular flat plate shape so as to cover the storage portion 1a, and L suspended from both ends of the front and rear side edges of the upper plate 7a by bending. The housing 1 is formed integrally between the letter-shaped mounting leg 7b and the rear left and right mounting legs 7b, and is bent from the rear edge of the upper plate 7a to be hung between the rear left and right mounting legs 7b. A rear plate 7c that covers the rear cutout 1g, and a left and right side plate 7d that is bent from the left and right side edges of the upper plate 7a and overlaps the left and right outer surfaces of the housing 1. A locking piece 7f is provided on the distal end side of each mounting leg 7b.

  When the upper body 7a is attached to the upper portion of the housing 1 to cover the housing portion 1a at the final assembly stage of the push button switch, the lid 7 covers the front end side (the locking piece 7f) of each mounting leg 7b. After being spread outwardly while being slidably contacted with the portion 1i, when the respective guide portions 1i are passed over, they are elastically restored to their original positions, and by engaging the respective locking pieces 7f with the respective engaging recesses 1h of the housing 1, The housing 1 is integrally coupled.

  1 to 6, reference numeral 8 denotes an operation member (push button), which is made of an insulating material such as synthetic resin, and has a pressing portion 8 a that protrudes outward from a notch portion 1 f on the front side of the housing 1, and a pressing portion 8 a. From the pressing portion 8a to the left and right outer sides of the operating portion 8b, and left and right slide portions 8c protruding into the receiving portion 1a. The left and right slide portions 8c have L-shaped cross-sectional shapes with the outer lower corners cut out as squares. The operating member 8 is disposed above the movable contacts 5 and 6 provided in two steps on the bottom of the housing portion 1a of the housing 1, and the pressing portion 8a extends from the notch portion 1f on the front side of the housing 1 to the outside. The upper surface of the upper movable contact 5 is protruded so that the upper surfaces of the operating portion 8b and the left and right slide portions 8c are in slidable contact with the upper plate 7a of the lid body 7 and the free end side of the operating portion 8b is the top portion of the upper movable contact 5. The left and right slide portions 8c are extended and stored along the pressing direction of the pressing portion 8a at the left and right side portions in the storage portion 1a.

  The actuating portion 8b is formed wider than the base side where the distal end side is the fixed end side (fulcrum side), and the upper end portion of the actuating portion 8b is chamfered at an upper corner portion of the distal end side at an angle of approximately 45 °. A first inclined portion 8d having a surface is provided, and a second inclined portion 8e having an inclined surface of approximately 25 ° formed by chamfering the lower corner portion on the distal end side is provided at the lower end on the distal end side of the operating portion 8b. A movable contact pressing portion 8f is formed to protrude downward at the center of the second inclined portion 8e. The surface of the movable contact pressing portion 8f is curved in an arc shape so as to come into contact with the peripheral side surface of the convex portion 5a from the upper surface of the peripheral portion of the convex portion 5a of the upper movable contact 5.

  1 to 4 and 6, reference numeral 9 denotes a guide member, which is made of an insulating material such as synthetic resin and has a peripheral portion 9 a that is accommodated in the outer peripheral portion in the accommodating portion 1 a of the housing 1. The peripheral portion 9a is formed in a U-shape, and is connected to the rear portion of the housing portion 1a along the rear side wall of the housing 1, and the right and left sides of the housing 1 from the left and right ends of the connecting portion 9b. The left and right guide portions 9c are provided so as to extend forward along the side walls of the storage portion 1a and are disposed on the left and right sides of the storage portion 1a. Further, the lower surface of the peripheral portion 9a is abutted and supported by the inner bottom surface 1b of the housing 1, the outer peripheral side surface is abutted by the inner surface of the side wall of the housing 1, and the upper surface is pressed by the upper plate 7a of the lid body 7, The position is fixed and stored in the outer peripheral portion in the portion 1b. The left and right guide portions 9c have L-shaped cross-sections with the inner lower corners cut out as squares. The upper horizontal portions of the left and right slide portions 8c are superimposed on the lower horizontal portions of the left and right guide portions 9c, and the left and right slide portions 8c are restricted from moving in the left and right directions by the vertical portions of the left and right guide portions 9c. In addition, the vertical movement of the left and right slide portions 8c is restricted by the lower horizontal portion of the left and right guide portions 9c and the upper plate 7a of the lid 7 opposite thereto, and the left and right slide portions 8c are moved in the front-rear direction. The operation member 8 is moved and guided in the front-rear direction along the pressing direction of the pressing portion 8a by the left and right guide portions 9c of the peripheral portion 9a. Further, the left and right guide portions 9c cover the open upper surfaces of the upper movable contact support recesses 1c and the left and right bent portion storage portions 1e of the housing 1, and prevent the upper movable contact 5 from being lifted by pressing the leg portions 5a. At the same time, the left and right bent portions 6a are pressed to prevent the lower movable contact 6 from being lifted.

  The guide member 9 has a drive portion 9d that protrudes between the left and right guide portions 9c from the connecting portion 9b of the peripheral portion 9a so as to face the operating portion 8b. The width of the drive portion 9d in the left-right direction is substantially the same as the width in the left-right direction of the operating portion 8b, and the vertical thickness is the height above the inner bottom surface 1b of the housing 1, that is, the storage portion. The upper surface of the driving portion 9d is formed flush with the upper surface of the peripheral portion 9a and is pressed by the upper plate 7a of the lid body 7. The lower surface of the drive portion 9d is provided with a concave portion for releasing the convex shape protruding from the bottom of the storage portion 1a, that is, the dome shape of the upper movable contact 5 and the further convex shape of the top portion (to eliminate interference). . The concave portion is formed on the entire lower surface from the base end side of the driving portion 9d to form a shallow first concave portion 9e for escaping the dome shape of the upper movable contact 5, and the upper movable contact 5 is formed on the lower surface on the distal end side of the driving portion 9d. A deep second concave portion 9f is provided to escape the further convex shape, that is, the convex portion 5a, at the top of the dome shape. The second recess 9f is also opened in the downward direction and the operating portion direction (forward direction). The upper surface of the driving unit 9d is pressed by the upper plate 7a of the lid body 7, and the dome shape of the upper movable contact 5 and the further convex portion 5a shape of the top movable portion 5d itself through the first concave portion 9f and the second concave portion 9g ( While escaping within the thickness of the drive part 9d), it protrudes forward from the rear part in the storage part 1a and is arranged on the upper side of the upper movable contact 5, and the distal end side of the drive part 9d faces the top of the upper movable contact 5. Arranged.

  Then, the front end side of the driving portion 9d is brought into contact with the first inclined portion 8d of the operating portion 8b from the upper plate 7a side (upper side) of the lid body 7 to press the pressing portion 8a in the movable contact direction (downward). A third inclined portion 9g having substantially the same inclination as the first inclined portion 8d to be converted is provided.

  As shown in FIG. 3, the push button switch according to the present embodiment is assembled by placing the upper movable contact 5 and the lower movable contact 6 on the bottom of the housing 1 a of the housing 1 in two stages, and then the operation member 8. And the guide member 9 are brought close to each other with their distal ends facing each other, the first inclined portion 8d of the operating portion 8b and the third inclined portion 9g of the drive portion 9d are brought into contact with each other, and the left and right guides The operation member 8 and the guide member 9 are combined in a state where the upper horizontal portions of the left and right slide portions 8c are superimposed on the lower horizontal portion of the portion 9c, and the pressing portion 8a of the operation member 8 is notched on the front side of the housing 1. It is housed in the housing portion 1a while being fitted into the portion 1f, and finally the lid body 7 is covered from above and attached to the housing 1 to complete.

  Next, the operation of the pushbutton switch according to the present embodiment will be described with reference to FIGS. 1, 2, 7, and 8. FIG. FIG. 7 is a cross-sectional view showing the operating state of the first stage of the pushbutton switch according to one embodiment of the present invention, and FIG. 8 is a cross-sectional view showing the operating state of the second stage of the pushbutton switch according to one embodiment of the present invention. is there.

  In the free state before the operation without operating the operation member 8, as shown in FIGS. 1 and 2, the upper movable contact 5 and the lower movable contact 6 are in a dome-shaped free state in which each swells upward, and are separated from each other. The portion of the upper movable contact 5 that faces the drive portion 9d is located in the first recess 9e that is provided on the lower surface of the drive portion 9d, and the convex portion 5a that is provided on the top of the upper movable contact 5 is located on the tip side of the drive portion 9d. The lower movable contact 6 is located in the second recessed portion 9f having a central portion spaced apart from the second selection contact 4a. Further, the operating member 8 is located at a free position, and the operating portion 8b is protruded and supported substantially horizontally from the pressing portion 8a into the storage portion 1a, and the first inclined portion 8d of the operating portion 8b is the third inclined portion of the driving portion 9d. The movable contact pressing portion 8f of the operating portion 8b is in contact with the upper portion of 9g and the peripheral side surface of the convex portion 5a of the upper movable contact 5 located in the second concave portion 9f of the drive portion 9d and the surrounding upper movable contact 5 Abuts on top of top.

  When the pressing portion 8a of the operating member 8 is pressed forward from the lateral direction from this free state, as shown in FIG. 7, the operating member 8 is moved forward as a whole, and the first inclined portion 8d of the operating portion 8b is driven. By sliding on the third inclined portion 9g of the portion 9d toward the lower end of the inclined portion, the pressing from the lateral direction of the pressing portion 8a is converted into the lower right-angle direction. Thereby, the front end side of the action | operation part 8b is pushed down accompanying the bending deformation of the action | operation part 8b. Further, since the peripheral side surface of the convex portion 5a of the upper movable contact 5 located in the second concave portion 9f of the driving portion 9d is in contact with the movable contact pressing portion 8f of the operating portion 8b, the tip side of the operating portion 8b is lowered. With the forward movement, the peripheral side surface of the convex portion 5a of the upper movable contact 5 slides the surface of the movable contact pressing portion 8f of the operating portion 8b toward the inclined lower end side, whereby the pressing portion 8a. The pressure from the lateral direction is converted into the lower right-angle direction. Thereby, the convex part 5a of the upper side movable contact 5 is pushed down. Accordingly, the top of the upper movable contact 5 has a pressing stroke longer than the pressing stroke of the pressing portion 8a (pressing stroke) obtained by adding the lowering amount of the convex portion 5a of the upper movable contact 5 to the lowering amount on the tip side of the operating portion 8b. ).

  When the top of the upper movable contact 5 is pushed down, the upper movable contact 5 reverses downward and contacts the lower movable contact 6 on the lower side, so that the common contact 2a and the first selection contact 3a Are electrically connected through the upper and lower movable contacts 5 and 6, and the first-stage switch is turned on, that is, the first-stage feel and electrical signal are output.

  Subsequently, when the pressing portion 8a of the operating member 8 is pressed further forward from the lateral direction, the operating member 8 moves further forward as a whole as shown in FIG. 8, and the first inclined portion 8d of the operating portion 8b. Further slides on the third inclined portion 9g of the drive portion 9d toward the lower end of the inclined portion, whereby the distal end side of the operating portion 8b is further pushed down with further bending deformation of the operating portion 8b, and the operating portion As the front end side of 8b moves downward, the peripheral side surface of the convex portion 5a of the upper movable contact 5 further slides the surface of the movable contact pressing portion 8f of the operating portion 8b toward the inclined lower end side. Finally, the upper surface of the convex portion 5a of the upper movable contact 5 slides on the surface of the movable contact pressing portion 8f of the operating portion 8b, and the distal end side of the operating portion 8b rides on the convex portion 5a of the upper movable contact 5. As a result, the convex portion 5a of the upper movable contact 5 is further removed. It is pushed down. Therefore, the top portion of the upper movable contact 5 has a pressing stroke longer than the pressing stroke of the pressing portion 8a, in which a further lowering amount of the convex portion 5a of the upper movable contact 5 is further added to the further lowering amount of the operating portion 8b. Pushed down. As a result, the top of the lower movable contact 6 is pushed down at the top of the upper movable contact 5.

  When the top of the lower movable contact 6 is pushed down, the lower movable contact 6 reverses downward and comes into contact with the second selection contact 4a on the lower side, so the common contact 2a and the second selection contact 4a is electrically connected to the upper and lower movable contacts 5 and 6, and the second-stage switch is turned on after the first-stage switch, that is, the first-stage touch and the output of the electric signal are followed by 2 Outputs the feel of the step and electrical signals.

  In addition, while the pressing part 8a of the operation member 8 is pressed and the top part of the lower movable contact 6 is in contact with the second selection contact 4a, the first-stage switch and the second-stage switch are kept on. .

  When the switch on the first stage and the switch on the second stage are turned on and the pressing of the operation member 8 from the lateral direction is removed, the upper and lower movable contacts 5 and 6 are each inverted upward by elasticity, and are in the original free state. 1 and the operating portion 8b of the operating member 8 also returns to the free state due to its elastic force, and accordingly, the operating member 8 returns to the free position and before the operation of not operating the original operating member 8 shown in FIG. Return to the free state. At the time of returning to the free state, when the contact between the lower movable contact 6 and the second selection contact 4a is cut off, the second-stage switch is turned off, and the contact between the upper movable contact 5 and the lower movable contact 6 is reached. When is cut off, the first-stage switch is turned off.

  As described above, the pushbutton switch according to the present embodiment includes an insulating housing having a storage portion, a fixed contact provided at the bottom of the storage portion, a movable contact installed on the fixed contact, An insulating operation member having a pressing portion that is slidably stored in the storage portion and protrudes to the outside from a side portion of the housing, and an operation portion having a cantilever structure protruding from the pressing portion into the storage portion; A pushbutton switch including an insulating guide member that is housed in the housing portion and moves and guides the operation member in the pressing direction of the pressing portion, and a metal plate lid that is attached to the housing and covers the housing portion The movable contact is made of a dome-shaped metal plate, has a convex portion protruding in the direction of the lid at the top, and the guide member has a drive portion protruding facing the operating portion, Drive unit is in front An inclined portion that contacts the distal end side of the operating portion from the lid body side and converts the pressing of the pressing portion into a movable contact direction, and is opened in the operating portion direction and the movable contact direction, and the convex portion of the movable contact is released. An inclining portion that is provided with a recess and that makes the distal end side of the operating portion abut on the inclined portion of the driving portion and the convex portion of the movable contact, and converts the pressing of the pressing portion of the operating member into the movable contact direction. Is provided in the drive portion of the guide member, the insulation distance between the inclined portion and the movable contact can be made as small as possible or eliminated, and the height of the push button switch can be reduced. Moreover, since the convex part which has the top part of a movable contact is escaped by the recessed part provided in the drive part, the thinness of a pushbutton switch is not impaired by the convex part of a movable contact. Furthermore, the movable contact is pressed (pressed down) with a pressing stroke longer than the pressing stroke of the pressing portion while the distal end side of the operating portion slides on the inclined portion and the convex portion. Can be ensured, and a further reduction in the height of the push button switch can be realized. Further, it is not necessary to take dust-proof measures as in the case of a conventional push button switch, the operational feeling of the push button switch can be improved, and the cost can be reduced and the assemblability can be improved by reducing the number of parts. Furthermore, the pressing load applied to the lid can be distributed over a wider area via the drive unit, and the lid is less likely to be deformed by the pressing load, so that the durability of the push button switch can be improved.

  In addition, the guide member has a guide portion extending along the pressing direction of the pressing portion, and the operation member extends along the pressing direction of the pressing portion, and the guide member extends on the guide portion. The slide part slides in the pressing direction of the pressing part. When assembling the push button switch, when attaching the lid to the housing, the operating member is pressed and the guide part of the guide member is pressed by the sliding part. Thus, both the operation member and the guide member can be held in the housing housing portion, the lid body can be easily attached to the housing, and the assembly of the push button switch can be further improved.

  In addition, the movable contact is installed in two upper and lower stages on the fixed contact, and different fixed contacts are provided at three locations on the bottom side of the outer peripheral portion of the upper movable contact, the outer peripheral portion of the lower movable contact, and the bottom portion of the central portion. With the provided configuration, it is possible to realize a two-stage pushbutton switch.

  Therefore, in the pushbutton switch according to the present embodiment, it is possible to obtain a good operation feeling, and it is possible to obtain a thin pushbutton switch that is thin, inexpensive, and easy to assemble. In addition, it is possible to obtain a horizontal push type pushbutton switch that can obtain a good operation feeling, is thin, inexpensive, and easy to assemble.

It is sectional drawing which shows the pushbutton switch by one embodiment of this invention. It is the A section enlarged view of FIG. It is a perspective view which shows the decomposition | disassembly state of the pushbutton switch by one embodiment of this invention. It is a perspective view which shows the decomposition | disassembly state of the state which turned over the pushbutton switch by one Embodiment of this invention. It is a perspective view which shows the external appearance of the pushbutton switch by one embodiment of this invention. It is a top view which shows the state which removed the cover body of the pushbutton switch by one embodiment of this invention. It is sectional drawing which shows the operation state of the 1st step | paragraph of the pushbutton switch by one embodiment of this invention. It is sectional drawing which shows the operation state of the 2nd step | paragraph of the pushbutton switch by one embodiment of this invention. It is sectional drawing which shows the pushbutton switch of a prior art example. It is a top view which shows the pushbutton switch of a prior art example. It is a top view which shows the state which removed the cover body of the pushbutton switch of a prior art example. It is sectional drawing which shows the operation state of the pushbutton switch of a prior art example.

Explanation of symbols

1 Housing 1a Storage 2a Common contact (fixed contact)
3a First selection contact (fixed contact)
4a Second selection contact (fixed contact)
5 Upper movable contact (movable contact)
5a Convex part 6 Lower movable contact (movable contact)
7 Lid 8 Operation member 8a Pressing part 8b Actuating part 8c Slide part 9 Guide member 9c Guide part 9d Drive part 9f Recessed part 9g Inclined part

Claims (2)

  An insulating housing having a storage portion; a fixed contact provided at a bottom portion of the storage portion; a movable contact disposed on the fixed contact; and a slidably stored in the storage portion; An insulating operation member having a pressing portion protruding outward from the side portion and an actuating portion having a cantilever structure protruding from the pressing portion into the storage portion; and housed in the storage portion; and in a pressing direction of the pressing portion A pushbutton switch comprising an insulating guide member that moves and guides the operation member, and a metal plate lid that is attached to the housing and covers the storage portion, wherein the movable contact is formed from a dome-shaped metal plate. And having a convex portion projecting in the direction of the lid at the top, the guide member having a drive portion projecting facing the operation portion, and the drive portion is located on the distal end side of the operation portion. Abut from the body side An inclined portion that converts the pressing of the portion into the movable contact direction, a recess that is opened in the operating portion direction and the movable contact direction, and escapes the convex portion of the movable contact, and the distal end side of the operating portion is disposed on the driving portion. A push button switch, wherein the push button switch is brought into contact with an inclined portion and a convex portion of the movable contact.   The movable contact is installed in two upper and lower stages on the fixed contact, the convex portion is provided on the upper movable contact, the bottom side of the outer peripheral part of the upper movable contact and the outer peripheral part and the bottom part of the central part of the lower movable contact The pushbutton switch according to claim 1, wherein different fixed contacts are provided at three positions on the side.

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