JP4385857B2 - Push button switch - Google Patents

Description

  The present invention relates to a push button switch used for an elevator switch or the like.

  Among conventional push button switches, as shown in FIGS. 16 and 17, a built-in switch 113 is operated via a plunger lever 112 by operating a lever link 111 by pushing a push button portion 110.

  As shown in FIGS. 18 and 19, the lever link 111 is composed of a pair of link levers 100 and 101, and the link levers 100 and 101 protrude to the other side from each other at an intermediate portion thereof. Protrusions 102, 103 are provided, and one link lever 100 of both link levers 100, 101 is brought into abutment with the other link lever 101 so that one link lever 100 swings. The fulcrum Q is formed, and the swinging fulcrum Q of the other link lever 101 is formed by causing the protruding portion 103 of the other link lever 101 to come into contact with the one link lever 100 in an overlapping manner. The projecting portions 102 and 103 are positioned so that the swing fulcrums Q of 100 and 101 substantially coincide, and the push button portion 110 is translated. It is the way to.

  Then, when the operation plunger 114 is pushed in by pushing the push button part 110 with a finger, one link lever 100 rotates in the clockwise direction around its swing fulcrum Q, and the other link lever 101 turns its swing. Rotating counterclockwise about the moving fulcrum Q, the intersection of one link lever 100 and the other link lever 101 is lowered.

  When the crossing portion of the one and the other link levers 100 and 101 is lowered, the plunger lever pushing portion 115 of the one link lever 100 pushes the right connection portion 112A of the plunger lever 112. The plunger lever 112 rotates in the clockwise direction in FIG. 20 around its swing fulcrum P in order to receive a pressing force at the point of action of one of the forces, so that the left connecting member 116 of the plunger lever 112 As shown in FIG. 17, the protrusion 117 pushes up the movable piece 118 of the built-in switch 113, and the movable contact 119 of the movable piece 118 comes into contact with a fixed contact (not shown) of the fixed terminal 120 to switch on. It becomes the state of.

  When the push button 110 is released, the spring force of the return spring member 121 pushes up the tip (left part) of the other link lever 101. When the tip end of the other link lever 101 is pushed up in this way, one link lever 100 rotates counterclockwise around the swing fulcrum Q, and the other link lever 101 swings. Rotating clockwise around the fulcrum Q, the intersection of one link lever 100 and the other link lever 101 rises.

When the crossing portion of the one and the other link levers 100 and 101 rises, the pushing of the right connecting member 112A of the plunger lever 112 by the plunger lever pressing portion 115 of the one link lever 100 is released. For this reason, the plunger lever 112 returns to the original state, the push-up of the movable piece 118 of the built-in switch 113 is released, the movable piece 118 is restored by the spring force of the reversing spring 122, and the movable contact 119 is opened from the fixed contact. The switch is turned off (see Patent Document 1).
JP2003-04527A (Japanese Patent Application No. 2001-234991)

  However, in the above-described conventional push button switch, the lever link 111 is an X-type lever link formed by crossing one link lever 100 and the other link lever 101. In the width direction, one link lever 100 and the other link lever 101 overlap each other, which is an obstacle to making the size of the push button switch smaller in the width direction, and the conventional push button switch Is a configuration in which the built-in switch 113 is operated via the plunger lever 112 by operating the lever link 111 by pushing the push button portion 110, and the push button switch is overlapped with the lever link 111 and the plunger lever 112. It has become an obstacle to making the dimension in the height direction smaller, that is, making it thinner.

  The present invention has been made paying attention to the above matters, and the object of the present invention is to reduce the width and the thickness while maintaining the parallel operation of the push button in the pushing direction. It is to provide a push button switch.

To achieve the above object, a push button switch according to the present invention is housed in base over scan, it comprises an illumination unit, compressing the return spring member via the switch driver by pressing the push button portion, simultaneously Internal Switch a push button switch so as to actuate the switch driving section, U by connecting one end of the pair of lever members parallel to each other with a shaft portion to the intermediate portion by a connecting shaft portion A pair of lever members formed in a shape, and both the lever members are arranged to face each other by connecting the joint portions at the other end portions of the lever members so as to be bendable, and the connecting shaft portion Are provided with a spring receiving portion corresponding to the return spring member and a switch operating portion corresponding to the leaf switch, respectively, and the lever members are pushed by the push button portion. And the pivot receiving portion of one of the lever members compresses the return spring member and the switch operating portion of the other lever member. When the built-in switch is closed and the pressing of the push button portion is released, the return spring member of the one lever member pushes up the one lever member and swings about the support shaft portion. is is obtained by by such swings to open work dynamic the leaf switch by releasing the pressure to the internal switch by the switch actuating portion of the other lever member in conjunction said other lever member .

  With this configuration, by pushing the push button portion, the lever link is moved in parallel in the pushing direction by the lever link, and when the lever link is actuated by pushing the push button portion, the lever member constituting the lever link is swung. The built-in switch can be operated by swinging around the fulcrum.

  In particular, the lever link has a pair of lever members that oscillate about an oscillating fulcrum, and both the lever members are configured to be foldable at their opposite ends. There is no need to use an X-type lever link in which two commonly used link levers are pivotally connected to each other at their respective intermediate portions, and one and the other lever member are doubled in the width direction of the pushbutton switch. Therefore, it is possible to reduce the width of the push button switch, and it is possible to reduce the thickness of the push button switch because there is no plunger lever overlapping the lever link.

  Here, the push button portion has a configuration in which, for example, the dial and the key top are fitted on the operation plunger in a state of being overlapped, and the dial and the key top are fixed to the operation plunger. The built-in switch corresponds to, for example, a leaf switch or a mechanical switch.

In addition, with this configuration, when the push button portion is pushed, the lever member moves the push button portion in parallel in the pushing direction, and when the lever member is actuated by pushing the push button portion, the lever member constituting the lever member is around the swing fulcrum is swung can operate the switch unit through the switch operating unit, in order to switch operation unit is provided on the lever member, the switch actuating member separate from the lever member, For example, there is no need to provide a plunger lever, and the thickness of the push button switch can be reduced while maintaining a parallel operation with respect to the pushing direction of the push button portion.

In addition, with this configuration, the lever member can be configured with a simple configuration and a low length, which contributes to reducing the thickness of the push button switch, and the lever members are the same. Since the configuration is adopted, the cost can be reduced by reducing the number of articles of the push button switch.

Further, by such a configuration, by pressing the push button unit, the push button portion by the lever member by compressing the return spring member, it is moved parallel to the pushing direction, when the lever member is operated by pushing the push button portion, the Le The built-in switch can be operated via the switch operating portion by swinging the bar member around the swing fulcrum.

Further, a push button switch according to the present invention is a push button switch according to the present invention described above, the internal switch is a leaf switch, the leaf switch, when the lever member is swung by pushing the push button portion the contact operating member operated by the switch operating portion, by bending the movable piece by the operation of the contact operating member, and a switch portion for contacting the movable contact the movable piece has the fixed contact of the fixed piece The switch portion includes an insulating holder that holds the movable piece and the fixed piece facing each other, and a switch-side joint portion having a circular cross section is formed on the insulating holder. In addition, the insulating holding body is provided with a support shaft that coincides with the contact operating body swinging center that is the center of the switch side joint portion, and the contact operating body has a cap shape. Thus, this contact operating body has a pair of arc-shaped contact operating body side joint portions provided on the opening side, and a support hole provided on both sides thereof and corresponding to the center of the contact operating body side joint portion. A support arm portion, and the contact operating body is rotatably fitted into the switch side joint portion by inserting the movable piece and the fixed piece therein. In addition, the contact operating body is mounted on the switch part by rotatably supporting the support shaft in the support hole .

  With this configuration, when the lever link is swung by pushing the push button portion, the contact operating body is rotated about the contact operating body rotation center by the switch operating portion, so that the movable piece can be moved by the contact operating body. The leaf switch switch can be actuated by pressing to bring the movable contact into contact with the fixed contact.

Further, when the lever member is swung by pushing the push button portion, the contact operating body is rotated by the switch operating portion, and the contact operating body side joint portion is rotated about the contact operating body swinging center and the support shaft as a fulcrum. The leaf switch can be operated by pressing the movable piece with the contact operating body to bring the movable contact into contact with the fixed contact.

Further, the push button switch according to the present invention is the above-described push button switch according to the present invention, wherein a contact pressing portion projects from the inner surface side of the contact operating body, and the movable contact and the fixed contact are separated from each other. the contact pressing portion presses the movable piece in a state, is pushed a predetermined amount the movable piece to the fixed side, Ru der those to give a preload to the movable piece.

With this configuration, when the lever member swings due to the pressing of the push button portion, the contact operating body is rotated about the contact operating body rotation center by the switch operating portion, so that the inner surface portion of the contact operating body By pressing the movable piece with the contact pressing part provided on the contact point, the movable contact point is brought into contact with the fixed contact point to turn on the switch. Rotating in the reverse direction with fulcrum as the fulcrum, the movable contact is separated from the fixed contact and switched off. Thus, the biasing force of the movable piece itself and to be used for restoration of the contact operating member, a return a spring is no longer needed, Ru can reduce the number of parts.

Further, the pushbutton switch according to the present invention is the above-described pushbutton switch according to the present invention, wherein the switch portion has one of the same configurations formed by insert molding in which a switch contact piece having a contact is inserted into a mold of an insulating material. The mold is composed of the other switch structure, and the mold has a contact operating body fitting portion whose outer surface is semicircular in cross section, and its inner surface is a mating surface portion. A shaft portion having a semicircular cross section is provided so as to project, and the one and the other switch constituent bodies are aligned with each mating surface portion, and the switch operation joint fitting portion forms the switch side joint portion. said supporting shaft is formed in part, one of said switch contact piece to the movable piece, Ru der those respectively the other to the fixing piece.

With this configuration, the switch unit is composed of one and the other switch components having the same configuration, and the one and the other switch components are aligned at the respective mating surfaces, and the switch operation joint fitting unit is the switch side joint unit. to form a to form a support shaft in the axial section, one of the switch contact piece to the movable piece, in order to respectively the other to the fixing piece, Ru can reduce the cost by reducing the article number of the leaf switch.

The push button switch according to the present invention has a plurality of position restricting portions protruding from the bottom surface of the base, and a locking pin portion protruding from each position restricting portion. Ru der those to hold by installing the lighting unit.

  According to the push button switch of the present invention, when the push button portion is pushed, the push button portion is translated by the lever link in the pushing direction, and the lever link is configured when the lever link is actuated by pushing the push button portion. The switch member can be operated by swinging the lever member to be pivoted about the swing fulcrum. In particular, the lever link has a pair of lever members that oscillate about an oscillating fulcrum, and both the lever members are configured to be foldable at their opposite ends. It is not necessary to use an X-type lever link in which two link levers that are generally used are connected to each other so as to be able to swing with each other, and a push button switch is maintained while maintaining a parallel operation in the pushing direction of the push button portion. It is possible to reduce the width dimension of the push button switch and reduce the thickness of the push button switch.

  Further, when the lever link is swung by pushing the push button portion, it is possible to generate a click feeling when the movable contact contacts the fixed contact by reversing the reversing member (wire spring).

  Embodiments of a push button switch according to the present invention will be described below with reference to the drawings.

  1 is a perspective view of a pushbutton switch according to the present invention, FIG. 2 is a perspective view of the pushbutton switch in an exploded state, FIG. 3 is a perspective view of a pushbutton portion of the pushbutton switch in an exploded state, and FIG. FIG. 5 is a plan view of the pushbutton switch according to the present invention shown in FIG. For convenience of explanation, the front-rear direction, the left-right direction, and the up-down direction are set as illustrated.

  As shown in FIGS. 1 and 2, an embodiment of a pushbutton switch according to the present invention includes a base 1, a built-in switch assembly 2 housed in the base 1, and a built-in switch assembly 2 provided in the base 1. A switch driving unit 3, an illumination unit 4, and a push button unit 5.

  As shown in FIG. 2, the base 1 has a base body 1F. The base body 1F includes a bottom surface portion (lower surface portion) 1A, front and rear surface portions 1B and 1C, and left and right surface portions 1D and 1E. The upper surface is open. The right surface portion 1E is provided with a connector mounting opening 1a.

  As shown in FIG. 2, the bottom surface portion 1A of the base main body 1F has a reversing member holding portion 6, a switch installation portion 7, a printed board assembly installation portion 8, and a return spring member installation portion 9 on the left and right sides. In addition, the bottom surface portion 1A is provided with a lever member installation portion 10 and a push button guide portion 11 at the center portion in the left-right direction and before and after the printed circuit board assembly installation portion 8 is sandwiched. It is.

  The push button guide portion 11 includes rib-shaped guide portions 12 that are provided on the inner surface portions of the front and rear surface portions 1B and 1C and the left and right surface portions 1D and 1E along the vertical direction. Moreover, the stopper 13 is provided in the edge part of each inner surface part of the front surface part 1B and 1C, and is located in right and left.

  The reversing member holding portion 6 is configured by a pair of receiving portions 14 formed over the inner surfaces of the bottom surface portion 1A and the left surface portion 1D, and a pressing portion 15 formed on the inner surface of the left surface portion 1D.

  The switch installation portion 7 is provided in the switch fitting recess 16 formed in the bottom surface portion 1A, a pair of hook-shaped presser portions 17 disposed before and after the switch fitting recess 16, and the switch fitting recess 16. And a stopper 18.

  The printed circuit board assembly installation portion 8 has position restriction portions 19A, 19B, 19C, and 19D that protrude from the bottom surface portion 1A so as to be located at each corner portion of the virtual quadrangle, and adjacent position restriction portions. A receiving portion 20 made of a protrusion is formed between the portions 19A, 19B, 19C, and 19D. The position restricting portions 19A, 19B, 19C, and 19D are provided with a locking pin portion 21 that constitutes a reflection case installation portion.

  The lever member installation portion 10 has a pair of left and right lever fulcrum hooks 22A, a pair of right and left lever fulcrum hooks 22B, and a pair of front and rear hinge fulcrum guides 23. is doing. The left and right pair of front and rear lever fulcrum hanging portions 22A is composed of a side-inverted L-shaped protrusion 24 projecting from the bottom surface portion 1A, and the right and left pair of front and rear lever fulcrum hanging portions 22B The configuration is the same as that of the pair of front and rear lever fulcrum hanging portions 22A, but in the opposite direction. Further, guide groove portions 25 are formed on the outer surface portions of the front and rear hinge fulcrum guide portions 23.

  As shown in FIG. 2, the switch drive unit 3 includes left and right (one and other) lever members 30L and 30R, a wire spring 31 that is a reversing member, and a return spring member 32 that is a coiled spring. . The wire spring 31 is a metal wire, and has a linear holding portion 31A in the middle portion thereof. The both ends of the holding portion 31A are bent, and the front sides of these bent portions 31B are made to the holding portion 31A. Are bent so as to be parallel to each other, and both end portions are formed as locking portions 31C.

  As shown in FIG. 2, the left (one) lever member 30L has front and rear lever portions 34A and 34B, and these lever portions 34A and 34B are connected at their outer end portions (left end portions). The shaft portions 35 are connected to each other.

  A joint portion 36 is formed at the inner end portion (right end portion) of the front lever portion 34A. The joint portion 36 is formed by inserting a notch groove 37 into the inner edge portion of the lever portion 34A to form a pair of piece-like portions 38 and forming a fork, and forming a pin support portion 39 on each piece-like portion 38. is there. Further, a joint portion 41 is formed at the inner end portion (right end portion) of the rear lever portion 34B, and this joint portion 41 is configured by providing a hinge pin 40 on a piece-like portion 41A. Further, spring engaging portions 42 are provided at the outer end portions of the front and rear lever portions 34A, 34B. In addition, pin-shaped support shaft portions 43 serving as swing support points Q are provided inwardly at substantially intermediate portions of the lever portions 34A and 34B, respectively.

  A contact portion 44 serving as a load application point is formed at the upper portion of the connecting shaft portion 35, and a switch operating portion 45 and a spring receiving portion 46 each having a flat notch are formed at the lower portion of the connecting shaft portion 35. Further, a plunger connecting portion 47 is formed on the connecting shaft portion 35 before and after the contact portion 44 is sandwiched.

  The other lever member 30R has the same configuration as the left lever member 30L. The right lever member 30R is opposed to the left lever member 30L by rotating 180 degrees horizontally with respect to the left lever member 30L, and has the same reference numeral as the left lever member 30L. Therefore, the description is omitted.

  As shown in FIG. 2, the illumination unit 4 includes a reflection case 50 that is a reflection member, and an LED module that is a light source unit in which a plurality of LEDs are arranged at the end of a plate-like light guide member (none of which is shown). Locking blocks 50A project from the lower four corners of the reflective case 50, and locking holes (not shown) are formed on the end surfaces of these locking blocks 50A. is there. The LED module is mounted on the printed board 97 of the printed board assembly 99.

  As shown in FIGS. 2 and 3, the push button unit 5 includes a key top 51 made of a transparent resin, a dial (character film) 52, and an operation plunger 53.

  As shown in FIG. 3, the operation plunger 53 includes a square frame-like plunger main body 53A, and a pair of lever connecting portions 55 are provided at the front, rear left, and right ends of the plunger main body 53A. . These lever connecting portions 55 are constituted by a pair of sandwiching projections 56 projecting from the lower surface of the plunger main body 53 </ b> A, and claw portions 56 a are disposed inside the ends of the sandwiching projections 56. Is formed. The front and rear edges of the plunger main body 53A are provided with locking recesses 53a that are separated from each other in the left-right direction. A lever pressing portion 64 is formed at the lower part of the left and right side portions of the plunger main body 53A.

  Further, a key top fitting portion 58 projects from the upper edge portion of the rectangular opening portion 57 formed at the center portion of the plunger main body 53 </ b> A, and the shock resistant portion is provided at the lower edge portion of the opening portion 57. Means are formed. The impact resistance means includes a pair of front and rear blocks 60A and 60B protruding from the left side of the lower edge of the opening 57 and a pair of front and rear blocks 61A protruding from the right side of the lower edge of the opening 57. , 61B and blocks 62A, 62B protruding from the front and rear sides of the lower edge of the opening 57, and a sliding groove 63 along the vertical direction is formed on the outer surface of the blocks 62A, 62B. It is formed.

  Then, the dial 62 is received by the key top fitting portion 58 of the operation plunger 53, and the key top 51 is fitted to the key top fitting portion 58, whereby the dial 62 and the key top 51 are connected to the operation plunger 53. Is attached and unitized.

  As shown in FIG. 2, the built-in switch assembly 2 includes a leaf switch 70 that is a built-in switch and a printed circuit board assembly 99.

  As illustrated in FIGS. 11 to 15, the leaf switch 70 includes a switch unit 71 and a contact operating body 72. The switch unit 71 is configured by combining one switch configuration body 73 and the other switch configuration body 74.

  One switch structure 73 is formed by insert molding in which a pair of switch contact pieces 76 are inserted into a mold 75 which is an insulating holding body. The outer surface of the mold 75 is a contact operating body fitting portion 77 and a mounting surface portion 78 having a semicircular cross section, and the inner surface is a mating surface portion 73A. The attachment surface portion 78 is formed with attachment portions 79 that protrude on both sides.

Further, as shown in FIG. 14, the mating surface portion 73 </ b> A is provided with a locking projection 80 and a locking hole 81 that are spaced apart from each other on the left and right. Further, shaft portions 82 having a semicircular cross section are provided on both side surface portions of the mold 75, and the flat surface portion 82a of the shaft portion 82 is located in the same plane as the mating surface portion 73A.

  The pair of switch contact pieces 76 are formed by punching a metal leaf spring material, and the tip portion thereof is a contact forming portion 83. The contact forming portion 83 is provided with a protruding contact 84. It is. Further, the base end portion is bent into a crank shape to form a lead portion 85.

  The other switch configuration body 74 has the same configuration as the one switch configuration body 73. For this reason, the same code | symbol is attached | subjected and description is abbreviate | omitted.

Then, as shown in FIG. 13, the locking protrusions 8 0 of one of the switch structure 73, inserted into and engaged to the engagement hole 81 of the other switch structure 7 4, the other switch structure 7 4 switch 71 the locking protrusions 8 0, by combining one of the one inserted and engaged in the engagement hole 81 of the switch structure 73 and the other switch structure 73, 74 at respective mating surface 73A of the Is configured.

  In this case, the shaft portions 82 having a semicircular cross section are aligned with each flat surface portion 82a to form a support shaft 86 having a circular cross section. Further, the contact operating body fitting portion 77 having a semicircular cross section in each of the one and the other switch constituting bodies 73 and 74 forms a switch side joint portion 87 having a circular cross section.

  Further, the lead portion 85 of the switch contact piece 76 is located in the same plane, and as shown in FIG. 15, the switch contact piece 76 of one switch component 73 is a movable piece. The contact 84 is a movable contact S, and the switch contact piece 76 of the other switch component 74 is a fixed piece, and this contact 84 is a movable contact T.

  Further, as shown in FIG. 13, the contact operating body 72 has a cap-shaped contact operating body main body 72A having a trapezoidal shape (tapered shape) in plan view, and the opening 91 side of the contact operating body main body 72A is The contact operating body side joint portion 88 is provided. The contact operating body side joint 88 has the upper surface 72a of the contact operating body main body 72A protruding rightward to form the protruding portion 89 in a circular arc shape, and the lower surface 72b of the contact operating body main body 72A is The projecting portion 90 is formed in an arc shape in cross section, and the projecting portions 89 and 90 face each other.

  Further, support arm portions 92 are provided on both side surface portions of the contact operating body main body 72A, and these support arm portions 92 are arranged along both side surface portions of the contact operating body main body 72A. The tip ends of the contact operation body side joint portion 88 are formed on both sides of the contact operation body side joint portion 88, and support holes 93 are formed in the respective front end portions, and the support hole 93 is formed on an axis passing through the rotation center of the contact operation body side joint portion 88. The center is located. Further, a stopper portion 96 projects from the upper edge portion of the support arm portion 92.

  Further, a pair of contact portions 94 project from the front and rear of the upper end portion 72a of the contact operating body 72A. In addition, a pair of contact pressing portions 95 project from the front and rear sides of the upper surface portion 72a of the contact operating body main body 72A.

  Then, the contact operating body 72 is placed on the switch portion 71 so that the respective switch contact pieces 76 of the one and the other switch constituent bodies 73 and 74 are inserted into the opening 91, and the contact operating body side joint portion 88 is attached. The switch-side joint portion 87 is rotatably fitted, and the tip end portion of the support arm portion 92 is attached to the switch portion 71 so that the contact operating body 72 is attached to the support hole 93 by rotatably supporting the support shaft 86. is there. In this case, as shown in FIG. 15, the center of the contact operation body side joint portion 88 into which the switch side joint portion 87 is rotatably fitted becomes the contact operation body rotation center R.

  Further, as shown in FIG. 11, when the stopper portion 96 of the support arm portion 92 is in contact with the lower surface of the mounting portion 79 on the upper side of the switch portion 71, the movable contact S and the fixed contact T of the switch portion 71 are in contact with each other. In this case, as shown in FIG. 15, the pair of contact pressing portions 95 of the contact operating body 72 is in contact with the distal end portion of the movable piece (the switch contact piece 76 of one switch component 73). In contact therewith, these movable pieces are pushed into the fixed piece (the switch contact piece 76 of the other switch component 74) side by a predetermined range to give a preload. Further, the distal end portion of the fixed piece is in contact with the inner surface portion of the contact operating body 72 opposite to the contact pressing portion 95 of the contact operating body 72.

  As shown in FIG. 2, the printed circuit board assembly 99 includes a printed circuit board 97 and a connector 98 attached to the outer end portion of the printed circuit board 97. The leaf switch 70 is attached by soldering the lead portion 84 of each switch contact piece 76 to a conductive pattern (not shown), and the built-in switch assembly 2 is constituted by these.

  Next, assembly of the push button switch will be described.

  A leaf switch 70 is installed in the switch installation section 7 of the bottom surface 1 </ b> A of the base 1, and a printed board assembly 99 is installed in the printed board assembly installation section 8.

  That is, as shown in FIG. 6, a leaf switch 70 is disposed in the switch fitting recess 16 of the switch installation portion 7, and the attachment portion 79 of the leaf switch 70 is pressed by the hook-shaped presser portion 17. The right end portion of the switch portion 71 of the leaf switch 70 is in contact with the stopper 18. In addition, the position of the printed circuit board 97 of the printed circuit board assembly 99 is regulated by the position restricting portions 19A, 19B, 19C, and 19D of the printed circuit board assembly installing section 8, and the front and rear corners of the left portion of the printed circuit board 97 are It engages with an engaging groove (not shown) provided in the position restricting portions 19A and 19B. In this state, the printed circuit board 97 is received by the receiving portion 20, and the connector 98 is positioned in the connector mounting opening 1 a of the base 1.

  In addition, a return spring member 32 is installed on the return spring member installation portion 9 of the bottom surface portion 1A of the base 1, and the reversing member holding portion 6 includes a pair of receiving portions 14 and presser portions 15. The holding unit 31A is held.

  The lever member installation portion 8 is provided with left and right lever members 30L and 30R. That is, as shown in FIG. 6, the left lever member 30 </ b> L is rotatably supported by a pair of left and right lever fulcrum hooking portions 22 </ b> A provided on the bottom surface portion 1 </ b> A of the base 1. Yes, and constitutes the swing fulcrum Q of the left lever member 30L. Further, the right lever member 30R is rotatably supported by a pair of right front and rear lever fulcrum hooking portions 22B provided on the bottom surface portion 1A of the base 1 with the front and rear support shaft portions 43, and the right lever member 30R. Is formed.

  Then, the engagement of the inner end portion (right end portion) of the front lever portion 34A of the left lever member 30L is engaged with the inner end portion (right end portion) of the front lever portion 34A of the right lever member 30R. The hinge pin 40 of the portion 41 is engaged, and the hinge pin 40 at the inner end portion (right end portion) of the rear lever portion 34A of the left lever member 30L is connected to the lever portion 34A of the rear side of the right lever member 30R. It is engaged with the pin engaging portion 36 of the engaging portion 41 of the inner end portion (right end portion). The hinge pin 40 is engaged with the pin engaging portion 36 by inserting the piece 41A between the pair of pieces 38 and inserting the hinge pin 40 into the pin support portion 39 of each piece 38. Has been done. The hinge pin 40 is slidably inserted into the guide groove portion 25 of the hinge fulcrum guide portion 23 provided on the base 1. These left and right lever members 30L, 30R constitute a lever link F.

  The spring receiving portion 46 provided on the connecting shaft portion 35 of the right lever member 30R receives the end of the return spring member 32, and the switch operating portion 45 provided on the connecting shaft portion 35 of the left lever member 30L. Are in contact with a pair of contact portions 94 provided on the contact operating body 72 of the leaf switch 70. Further, the locking portions 31C at both ends of the wire spring 31 are locked to the spring locking portions 42 at the outer end portions of the front and rear lever portions 34A, 34B of the left lever member 30L.

  In addition, the reflection case 50 is installed in the reflection case installation part by engaging the engagement hole of the engagement block 53 with the engagement pin part 21a provided in the position regulation part 19A, 19B, 19C, 19D. The LED module is located inside the reflective case 50 on the bottom side.

  An operation plunger 53 that is unitized by attaching the dial plate 52 and the key top 51 is inserted into the base 1 from above the illumination unit 4, and the peripheral surface portion of the operation plunger 53 is a rib of the base 1. The base plunger 13 is slidably contacted with the guide portion 12 having a shape, and the base stopper 13 is detachably engaged with the engagement concave portion 53a of the operation plunger 53, thereby preventing the operation plunger 53 from coming off.

  Then, as shown in FIG. 5, the pair of lever connecting portions 55 on the left side of the operation plunger 53 can rotate the plunger connecting portion 47 of the connecting shaft portion 35 of the left lever member 30 </ b> L with the pair of holding projections 56. In addition, the pair of right lever connecting portions 55 rotatably hold the plunger connecting portion 47 of the connecting shaft portion 35 of the right lever member 30R by the pair of holding protrusions 56. .

  Further, the lever lever pressing portions 64 provided on the left and right sides of the operation plunger 53 are in contact with the contact portions 44 provided on the connecting shaft portions 35 of the left and right lever members 30L and 30R.

  Further, the hinge fulcrum guide portion 23 provided on the base 1 is slidably inserted into the sliding groove 63 of the shock resistant means blocks 62A and 62B of the operating plunger 53, and the block of the shock resistant means is also provided. 60A and 60B are located on the left side of the lever fulcrum hanging portion 22A, and the blocks 61A and 61B are located on the right side of the lever fulcrum hanging portion 22B. The end surfaces of the blocks 60 </ b> A, 60 </ b> B, 61 </ b> A, 61 </ b> B, 62 </ b> A, 62 </ b> B are lifted by a predetermined distance from the bottom surface 1 </ b> A of the base 1 due to the lifting of the operation plunger 53 due to the spring force of the return spring member 32.

  Next, the operation of the push button switch configured as described above will be described.

  By connecting the connector 98 to the power supply side, power is supplied to the leaf switch 70 mounted on the printed circuit board 97.

  As shown by the arrows in FIG. 8, when the operation plunger 53 is pushed by pushing the key top 51 of the push button portion 5 with a finger, the contact portions 44 of the left and right lever members 30 </ b> L and 30 </ b> R are pushed by the lever pushing portion 64. Therefore, the left lever member 30L rotates counterclockwise about the support shaft portion 43 that is the swing fulcrum Q, and the right lever member 30R is the swing fulcrum Q. The hinge pin 40 that rotates in the clockwise direction around the support shaft 43 and is located at the bent portion of the left and right lever members 30L, 30R is located in the guide groove 25 of the hinge support guide 23 provided on the base 1. To rise.

  In this case, the return spring member 32 is pressed and compressed by the spring receiving portion 46 of the connecting shaft portion 35 of the right lever member 30R, and the wire spring 31 is rotated by the counterclockwise rotation of the left lever member 30L. Pressed.

  By the counterclockwise rotation of the left lever member 30L, the switch operating portion 45 provided on the connecting shaft portion 35 of the left lever member 30L presses the pair of contact portions 94 of the contact operating body 72 of the leaf switch 70. Then, the leaf switch 70 is operated.

  That is, as shown in FIG. 15, in the leaf switch 70, the contact operating body 72 is rotated counterclockwise about the contact operating body rotation center R as a fulcrum, thereby The tip of the switch contact piece 76 of one switch component 73 that becomes a movable piece is pressed by a pair of contact pressing portions 95 provided on the switch, and the movable contact S is switched to the switch of the other switch component 74 that becomes a fixed piece. The switch contacts with the fixed contact T provided on the contact piece 76.

  In this case, as shown in FIGS. 9 and 10, the wire spring 31 is pushed by the counterclockwise rotation of the left lever member 30L, but the wire spring 31 is moved by the further rotation of the left lever member 30L. When the neutral point is pushed, the wire spring 31 is reversed, and a click feeling is generated when the movable contact S contacts the fixed contact T.

  Further, the LED of the LED module emits light, and the light is diffused by the light guide plate and spreads over the whole, and is reflected by the reflection case 50 to illuminate the dial plate 52 from the back side. Therefore, the characters on the dial 52 are visually recognized from the outside of the key top 51 by light.

  Further, when the pressing of the key top 51 of the push button portion 5 is released, the spring force of the return spring member 32 pushes up the left portion (the connecting shaft portion 35 portion) of the right lever member 30L, and the right lever member 30R has its support shaft. It rotates counterclockwise around the portion 43.

  For this purpose, the left lever member 30L is interlocked with the right lever member 30R and pivots clockwise around the support shaft portion 43, and the switch operating portion provided on the left lever member 30L. 45 rises.

  For this reason, the pressure to the leaf switch 70 by the switch operating part 45 is released. For this purpose, the contact operating body 72 is rotated clockwise around the contact operating body rotation center R as shown in FIG. The pressing of the movable piece (the switch contact piece 76 of one switch component 73) is released. For this reason, the movable contact S is separated from the fixed contact T and is switched off.

  As described above, the blocks 60A, 60B, 61A, 61B, 62A, 62B of the impact resistance means are lifted by the lifting of the operation plunger 53 by the spring force of the return spring member 32, and the blocks 60A, 60B, 61A, 61B, 62A, The end surface portion of 62B is raised from the bottom surface portion 1A of the base 1 by a predetermined distance.

  Pushbutton switches as elevator switches are required to have a strength that does not break even if a 1 kg hard ball is dropped 1 to 3 times from 50 cm or 1 m, and is being standardized.

  Therefore, when a 1 kilometer steel ball is dropped on the pushbutton portion 5 of the pushbutton switch from above 50 cm, the pushbutton portion 5 is lowered and the end surfaces of the blocks 60A, 60B, 61A, 61B, 62A, 62B are the base 1 By colliding with the bottom surface portion 1A, it is possible to release the impact to the base 1 side and prevent the push button switch from being damaged. For this reason, the pushbutton switch of the present invention conforms to the above-mentioned standard.

  According to the above-described embodiment of the present invention, when the push button portion 5 is pressed, the switch drive portion 3 swings around the swing support point Q in conjunction with the push button portion 5 and faces each other. The lever link F includes a pair of lever members 30L and 30R arranged, and the lever members 30L and 30R are connected to each other so as to be foldable at opposite ends thereof. The lever link F is configured to open and close the leaf switch 70 when the push button portion 5 is swung by pressing.

  In other words, the swing fulcrum Q of both lever members 30L and 30R is configured by the support shaft portion 43, and the base 1 is provided with a pair of one lever fulcrum hooking portion 22A and a pair of other lever fulcrum hooking portions 22B. And a pair of hinge fulcrum guide portions 23 located between the other lever fulcrum hanging portions 22A and 22B, and a return spring member installation portion 9, and a supporting shaft portion 43 of one lever member 30L is provided as one lever fulcrum hanging portion. The pivot shaft 43 of the other lever member 30R is pivotably hooked on the other lever fulcrum hook 22B, and the hinge pin 40 is pushed by the hinge fulcrum guide 23 in the pushing direction of the push button portion 5. Both lever members 30L, 30R are installed on the base 1 while being guided so as to be able to reciprocate, and the lever member 30R is swung by the pushing operation of the push button portion 5 to the return spring member installation portion 9. A return spring member 32 for returning is provided, and a leaf switch 70 is provided on the base 1. When the lever link F is swung by pushing the push button portion 5, the return spring member 32 is compressed by the lever member 30 </ b> R and the switch is operated. Since the leaf switch 70 is opened and closed by the portion 45, the push button portion 5 is pushed, so that the push button portion 5 is translated in the push direction by the lever link F, and the lever link F pushes the push button portion 5. , The leaf switch 70 can be operated by swinging the lever members 30L and 30R constituting the lever link F around the swing fulcrum Q.

  In particular, the lever link F has a pair of lever members 30L and 30R that swing about the swing fulcrum Q, and both the lever members 30L and 30R are connected to each other so that they can be bent. Since it is configured, there is no need to use an X-type lever link in which two link levers generally used in the past are slidably connected to each other at each intermediate portion, and the push button portion 5 can be pushed in the pushing direction. It is possible to reduce the width of the push button switch and reduce the thickness of the push button switch while maintaining the parallel operation.

  Further, according to the embodiment of the present invention, by providing the switch operating portion 45 in the lever link F, pressing the push button portion 5 causes the lever link F to move the push button portion 5 in parallel in the pushing direction. When the lever link F is actuated by pushing the push button portion 5, the lever members 30L and 30R constituting the lever link F are swung around the swing fulcrum Q and the leaf switch is switched via the switch operating portion 45. 70 can be actuated, and it is not necessary to provide a switch actuating member separate from the lever link F, and accordingly, the thickness of the push button switch can be reduced.

Further, according to the embodiment of the present invention, both lever members 30L, 30R are formed in a U shape by connecting one end portions of the lever portions 34A, 34B parallel to each other by the connecting shaft portion 35. The other end portions of the portions 34A and 34B are joined portions 36 and 41, the swing fulcrum Q is provided in the middle portion of the lever portions 34A and 34B, and the switch operating portion 45 is provided in the connecting shaft portion 35. The other lever member 30R is rotated 180 degrees in the horizontal direction with respect to the one lever member 30L, whereby the one lever member 30L and the other lever member 30R are opposed to each other, and the one lever member 30L And the other lever member 30R are joined to each other at the joint portions 36 and 41 so that the lever link F can be bent, so that the lever link F is simplified. In addition to being able to contribute to reducing the thickness of the pushbutton switch, and because both lever members 30L and 30R have the same configuration, the pushbutton can be reduced. The cost can be reduced by reducing the number of articles of the switch.

  In addition, according to the embodiment of the present invention, the joint portions 36 and 41 have the pin support portion 39 formed at the end portion of one lever portion 34A and the hinge pin 40 provided at the end portion of the other lever portion 34B. The lever pin 30L and the other lever member 30R are joined to each other by engaging the hinge pin 40 with the pin support portion 39 so as to be detachable and rotatable. The assemblability of the link F can be improved.

  Further, according to the embodiment of the present invention, the push button portion 5 has the lever connecting portion 45, the lever connecting portion 45 is rotatably connected to the connecting shaft portion 35, and the lever link F is connected to the push button portion 5. As a result of the interlocking, even if the push button portion 5 is pushed in a biased manner, the push button portion 5 can be moved regardless of the push method, and the leaf switch 70 can be operated reliably.

  Further, according to the embodiment of the present invention, the spring engaging portion 42 is provided at the end on the opposite side to the joint portions 36 and 41 of the lever portion 34A of the one lever member 30L, and the reversing member holding portion is provided on the base 1. 6, the reversing member holding portion 6 holds the holding portion 31 </ b> A of the wire spring 31 made of a metal wire, and the locking portions 31 </ b> C at both ends of the wire spring 31 are locked to the spring locking portions 42, and the lever link When F swings by pushing the push button portion 5, a click feeling is generated by reversing the wire spring 31, so that the click when the movable contact S contacts the fixed contact T by reversing the wire spring 31. A feeling can be generated.

  Further, according to the embodiment of the present invention, the push button portion 5 has the operation plunger 53 provided with the key top 51, the lever connection portion 45 is provided on the operation plunger 53, and the operation plunger 53 is moved to the lever. In addition to being connected to the link F, there is provided an impact resistance means for releasing the impact to the base 1 side when an impact is applied to the push button portion 5 on the operation plunger 53, and the impact resistance means is opposed to the base 1 of the operation plunger 53. By having a plurality of blocks 60A, 60B, 61A, 61B, 62A, and 62B on the surface, the push button switch as an elevator switch can drop a 1 kilometer steel ball from the top of 50 cm three times. Unbreakable strength is required and is being standardized. Accordingly, when an impact is applied to the push button portion 5, the blocks 60A, 60B, 61A, 61B, 62A, 62B are caused to collide with the bottom surface portion 1A of the base 1, and the impact is released to the base 1 side to release the push button switch. Therefore, the push button switch of the present invention conforms to the above-mentioned standard.

  Further, according to the embodiment of the present invention, the built-in switch includes the contact operating body 72 that is operated by the switch operating section 45 when the lever link F is swung by the pressing of the push button section 5, and the contact operating body 72. The leaf switch 70 is composed of a switch portion 71 that causes the movable piece to bend by the operation of and the movable contact S of the movable piece is brought into contact with the fixed contact T of the fixed piece.

  That is, the switch portion 71 has a mold 75 for holding a movable piece made of the switch contact piece 76 and a fixed piece made of the switch contact piece 76 facing each other, and the switch side joint having a circular cross section is formed on the mold 75. A portion 87 is formed, and a support shaft 86 is provided on the mold 75 so as to coincide with the contact operating body swinging center R that is the center of the switch side joint portion 87. The contact operating body 72 has a cap shape. The contact operating body 72 includes a contact operating body side joint portion 88 having a circular cross section provided on the opening 91 side, and a support hole 93 provided on both sides thereof and coincident with the center of the contact operating body side joint portion 88. The contact operating body 72 is inserted into the contact operating body 72 by inserting a movable piece and a fixed piece into the contact operating body side joint section 88. The leaf switch 70 is configured by fitting the contact operating body 72 to the switch portion 71 by rotatably fitting the switch-side joint portion 87 to the switch-side joint portion 87 and rotatably supporting the support shaft 86 in the support hole 93. When the lever link F is swung by pushing the push button portion 5, the switch operating portion 45 causes the contact operating body 72 to be used, the contact operating body side joint portion 88 to be the contact operating body swing center R and the support shaft 86 as fulcrums. By rotating, the leaf switch 70 can be operated by pressing the movable piece with the contact operating body 72 and bringing the movable contact S into contact with the fixed contact T.

Further, according to the embodiment of the present invention, the contact pressing portion 95 protrudes from the inner surface side of the contact operating body 72, and the contact pressing portion 95 is in a neutral state in which the movable contact S and the fixed contact T are separated from each other. By pressing the movable piece, pushing the movable piece into the fixed piece side by a predetermined amount, and applying a preload to the movable piece, when the lever link F is swung by pushing the push button portion 5, the switch operating portion 45 operates the contact. By rotating the body 72 with the contact operating body rotation center R as a fulcrum, the contact pressing part 95 presses the movable piece, and the movable contact S is brought into contact with the fixed contact T to be switched on. When the push-in is released, the contact operating body 72 is rotated in the reverse direction around the contact operating body rotation center R by the spring back of the movable piece, and the movable contact S is separated from the fixed contact T and switched off. Become. Thus, the biasing force of the movable piece, in order to use itself and for the return of the contact operating member 72, the return spring is no longer needed, Ru can reduce the number of parts.

Further, according to the embodiment of the present invention, the switch portion 71 includes one and the other switch structures having the same configuration formed by insert molding in which the switch contact piece 76 having the contact 84 is inserted into the mold 75 of the insulating material. and each other to constitute in adult body 73, 74, the mold 75 has its outer surface has a contact operating member fitting portion 7 7 semi-circular cross section, Yes in the inner surface thereof mating surface 73A, opposite sides of the mold 75 the face Yes to protrude the shaft portion 82 of a semicircular cross section, respectively, combined one and the other of the switch structure 73, 74 at respective mating surface 7 3A, switch side in contact operating member fitting portion 7 7 The joint portion 87 is formed, the support shaft 86 is formed by the shaft portion 82, one of the switch contact pieces 76 is a movable piece, and the other is a fixed piece. By reducing the cost can be reduced.

  The push button switch according to the present invention moves the push button portion in parallel in the pushing direction by pushing the push button portion, and the lever link constitutes the lever link when the lever link is actuated by pushing the push button portion. The switch portion can be operated by swinging the member around the swing fulcrum. In particular, the lever link has a pair of lever members that oscillate about an oscillating fulcrum, and both the lever members are configured to be foldable at their opposite ends. It is not necessary to use an X-type lever link in which two link levers that are generally used are connected to each other so as to be able to swing with each other, and a push button switch is maintained while maintaining a parallel operation in the pushing direction of the push button portion. This is advantageous in that it is possible to reduce the width dimension of the switch and to reduce the thickness of the push button switch, and is useful for a push button switch used for an elevator switch or the like.

It is a perspective view of the pushbutton switch which concerns on this invention. It is a perspective view of the decomposition | disassembly state of the pushbutton switch. It is a perspective view of the decomposition | disassembly state of the pushbutton part in the same pushbutton switch. It is sectional drawing which follows the AA line of FIG. It is sectional drawing which follows the BB line of FIG. It is the top view which abbreviate | omitted a part of pushbutton switch which concerns on this invention of FIG. It is sectional drawing which follows the CC line of FIG. It is operation | movement explanatory drawing of the pushbutton switch which concerns on this invention. It is explanatory drawing of the state before inversion of a wire spring. It is explanatory drawing of the state after inversion of a wire spring. It is the perspective view seen from the contact operation body side of a leaf switch. It is the perspective view seen from the switch part side of the leaf switch. It is a perspective view of the disassembled state of the leaf switch. It is a perspective view of the disassembled state of the switch part of the leaf switch. It is a longitudinal cross-sectional view which follows the DD line | wire of FIG. It is a perspective view of the conventional pushbutton switch. It is a longitudinal cross-sectional view of the same pushbutton switch. It is a perspective view of the decomposition | disassembly state of the pushbutton switch. It is a perspective view of the lever link in the same pushbutton switch. It is a perspective view of the plunger lever in the pushbutton switch. It is a perspective view in the state where a pushbutton part was removed in the pushbutton switch.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base 2 Built-in switch assembly 3 Switch drive part 4 Illumination part 5 Push button part 6 Reversing member holding part 7 Switch installation part 8 Printed circuit board assembly installation part 9 Return spring member installation part 10 Lever member installation part 11 Push button guide part 22A Lever Fulcrum hook 22B lever fulcrum hook 23 hinge fulcrum guide 24 fulcrum support 30L one lever member 30R other lever member 31 wire spring (reversing member)
31A Holding part 31C Locking part 34A, 34B Lever part 35 Connecting shaft part 36 Joining part 39 Pin support part 40 Hinge pin 41 Joining part 42 Spring latching part 43 Supporting shaft part 44 Abutting part 45 Switch operating part 46 Spring receiving part 47 Plunger connecting part 51 Key top 53 Operating plunger 55 Lever connecting part 64 Lever pressing part 60A, 60B, 61A, 61B, 62A, 62B Block (impact resistant means)
70 Leaf switch (built-in switch)
71 Switch part 72 Contact operation body 73 One switch structure 73A Matching surface part 74 The other switch structure 75 Mold (insulation holding body)
76 Switch contact piece 77 Contact operating body fitting portion 82 Shaft portion 84 Contact 86 Support shaft 87 Switch side joint portion 88 Contact operating body side joint portion 92 Support arm portion 93 Bearing hole 94 Contact portion 95 Contact pressing portion 99 Printed circuit board assembly R Center of contact operating body rotation S Movable contact T Movable contact Q Swing fulcrum

Claims (5)

Housed in base over scan, it comprises an illumination unit, compressing the return spring member via the switch driver by pressing the push button portion, a push button switch so as to create moving the internal switch simultaneously,
The switch drive unit has a pair of lever members formed in a U shape by connecting one end portions of a pair of lever members parallel to each other with a support shaft portion at an intermediate portion by a connection shaft portion, The lever members are arranged to face each other by connecting the joints at the other end portions of the lever members so as to be bendable, and each of the connecting shaft portions has a spring corresponding to the return spring member. A receiving portion and a switch operating portion corresponding to the built-in switch are provided,
By the pressing of the push button portion, the both lever members swing around the support shaft portion in conjunction with the push button portion, and the spring receiving portion of one lever member of the both lever members is the return spring member. When the switch operating portion of the other lever member closes the built-in switch and the pressing of the push button portion is released, the return spring member of the one lever member The lever member is pushed up to swing around the support shaft, and the other lever member is interlocked by the swing to release the pressing of the other lever member to the built-in switch. push button switch which is characterized in that so as to open work dynamic the internal switch Te. The built-in switch is a leaf switch, and the leaf switch is operated by the switch operating unit when the lever member is swung by pressing the push button unit, and by the operation of the contact operating unit. The movable piece is bent, and the movable contact of the movable piece is configured to have a switch part that contacts the fixed contact of the fixed piece .
The switch portion includes an insulating holder that holds the movable piece and the fixed piece facing each other. The insulating holding body forms a switch-side joint portion having a circular cross section, and the insulating holder. The body is provided with a support shaft that coincides with the center of the switch operating joint swinging center that is the center of the switch side joint,
The contact operation body has a cap shape, and the contact operation body has a cross-section arc-shaped contact operation body side joint portion provided on the opening side, and a center of the contact operation body side joint portion provided on both sides thereof. And a pair of support arm portions having bearing holes that coincide with
The movable contact piece and the fixed piece are inserted into the contact operating body, the contact operating body side joint portion is rotatably fitted to the switch side joint portion, and the support shaft is rotated in the support hole. push button switch according to claim 1, characterized in that so as to constitute by mounting the contact operating member in said switch unit by enabling supported. A contact pressing portion projects from the inner surface side of the contact operating body, and the contact pressing portion presses the movable piece in a neutral state in which the movable contact and the fixed contact are separated from each other. 3. The pushbutton switch according to claim 2 , wherein a predetermined amount is pushed into the fixed piece side to give a preload to the movable piece. The switch unit, the mold of the insulating material, with each other and constituted by one and the other of the switch configuration of the same configuration which is formed by insert molding is insert the switch contact piece having a contact point, the mold, the outer face Has a semi-circular contact operating body fitting portion, and the inner surface thereof is a mating surface portion, and both side surface portions of the mold are respectively provided with semi-circular shaft portions projecting,
The one and other switch components are aligned at the mating surface portions, the switch operation joint fitting portion forms the switch side joint portion, the shaft portion forms the support shaft, and the switch contact piece 4. The pushbutton switch according to claim 3 , wherein one is the movable piece and the other is the fixed piece. A plurality of position restricting portions project from the bottom surface of the base, and a locking pin portion projects from each position restricting portion, and the illumination portion is installed and held on the locking pin portion. The pushbutton switch according to claim 1, wherein