JP2008071589A - Multidirectional pressing type switch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multidirectional pressing type switch capable of obtaining an effective static electricity invasion prevention effect in a simple structure. <P>SOLUTION: A rocking knob 290 (a rocking knob main body 280 and a rocking body 170) free to lock in multiple directions and equipped with pressing parts 177 at positions opposed to each switch 51 is installed on a switch board 45 with switches 51. A push-button knob 190 is fitted inside the rocking knob 290, and the switches 51 are fitted at positions opposed to pressing parts 195 of the push-button knob 190. A rotating knob 300 is fitted at an outer periphery of the rocking knob 290, and an electric function part changing an electric output by rotation of the rotating knob 300 is fitted at an underside of the rotating knob 300. Outer periphery grounding members 77 are fitted at an underside of the outer periphery of the rocking knob 290, and an inner grounding member 71 is fitted at an underside of a gap between the rocking knob 290 and the push-button knob 190. The outer periphery grounding members 77 and the inner grounding member 71 are structured of a grounding member 70 made of a sheet of conductive plate. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a multi-directional push-type switch, and more particularly to a multi-directional push-type switch suitable for preventing static electricity that tends to enter inside when a knob is operated.

  2. Description of the Related Art Conventionally, there are multidirectional pressing switches as devices for operating various portable devices such as digital cameras and mobile phones, computers, in-vehicle navigation systems, various OA devices, game machines, and the like. Among the multi-directional pressing switches, a pad-shaped (disk-shaped) swing knob is provided to swing the swing knob in a plurality of directions (for example, four directions). Furthermore, a push button knob can be installed to perform a pressing operation in addition to a swinging operation, and a rotating knob can be installed to surround the outer periphery of the swinging knob to perform a rotating operation in addition to a swinging operation and a pressing operation. (For example, refer to Patent Document 1).

  When each of the knobs is operated with a finger or the like, if the finger or the like is charged, the static electricity from the gap between the outer periphery or the inner periphery of each knob is on the lower surface side (opposite surface operated with the finger or the like) of each knob. There is a risk of intrusion into electrical functional parts such as various switches and sliding contact patterns installed in the. For this reason, conventionally, for example, measures such as attaching an insulating sheet (grounding sheet) with a grounding conductive foil attached to a substrate on which various switches or the like are formed have been taken (see, for example, Patent Document 2).

However, affixing the grounding sheet has a troublesome bonding operation, and since it is affixed on each switch, the pressing feeling of each switch may be worse (heavy).
JP 2005-317337 A JP 2005-149994 A

  The present invention has been made in view of the above points, and an object of the present invention is to provide a multidirectional pressing switch capable of obtaining an effective electrostatic intrusion prevention effect with a simple configuration.

  According to the first aspect of the present invention, there is provided a switch board provided with a switch, and a swing knob provided on the switch board so as to be swingable in multiple directions and provided with a pressing portion at a position facing each switch. A multi-directional pressing switch that presses a switch that opposes the pressing portion by a pressing portion that the swinging knob swings and descends from a conductive plate on the lower surface side of the outer periphery of the swinging knob. The multi-directional press switch is characterized in that an outer peripheral earth member is provided.

  According to the second aspect of the present invention, a push button knob is installed in the swing knob so as to be movable up and down, a switch is installed at a position facing the pressing portion of the push button knob, and the swing knob and the push button knob are arranged. The multi-directional push switch according to claim 1, wherein an internal ground member made of a conductive plate is installed on the lower surface side of the gap formed between the two.

  According to a third aspect of the present invention, a rotary knob that rotates around the swing knob is installed on the outer periphery of the swing knob, and its electrical output is changed by the rotation of the rotary knob on the lower surface side of the rotary knob. The multi-directional push switch according to claim 1 or 2, wherein an electrical function part is provided.

  According to a fourth aspect of the present invention, in the multidirectional pressing switch according to the second aspect, the outer peripheral grounding member and the internal grounding member are constituted by a grounding member integrated with them. is there.

  According to a fifth aspect of the present invention, the internal grounding member is installed closer to the switch board than the outer peripheral grounding member, so that both are connected by a connecting portion with a step in the vertical direction. The multi-directional push switch according to claim 4, wherein the multi-directional push switch is provided.

  According to the first aspect of the present invention, only the simple structure in which the outer peripheral grounding member made of a conductive plate is installed on the lower surface side of the outer periphery of the swing knob, and the lower surface side of the swing knob is attempted to enter the lower surface side. Static electricity to be captured can be reliably captured by the outer peripheral ground member. Therefore, it is possible to reliably prevent the intrusion of static electricity into various electrical functional units installed on the lower surface side.

  According to the second aspect of the present invention, the swing knob and the push button can be simply configured by installing an internal ground member made of a conductive plate on the lower surface side of the gap formed between the swing knob and the push button knob. Static electricity that tends to enter the lower surface side from the gap between the knobs can be reliably captured by the internal ground member. Accordingly, it is possible to reliably prevent the intrusion of static electricity into various electrical functional units installed on the lower surface side.

  According to the third aspect of the present invention, even when the rotary knob is installed on the outer periphery of the swing knob, the static electricity that enters from the gap between the swing knob and the rotary knob is reliably captured by the outer peripheral ground member. Therefore, it is possible to reliably prevent the intrusion of static electricity into the electrical function part that changes its electrical output by the rotation of the rotary knob.

  According to the fourth aspect of the present invention, since the outer peripheral ground member and the internal ground member are constituted by the integrated ground member, the number of parts is reduced, the number of assembly steps is reduced, and the manufacturing cost is reduced.

  According to the fifth aspect of the present invention, it is possible to more reliably prevent static electricity from entering each switch operated by the swing knob by installing the internal ground member close to the switch board. .

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view of a multidirectional push switch 1 according to an embodiment of the present invention, FIG. 2 is a cross-sectional perspective view of the multidirectional push switch 1 cut at a predetermined position, and FIG. FIG. 4 (FIGS. 4-1 to 4-3) is a cross-sectional perspective view of the multi-directional push switch 1 as viewed from above. FIG. 5 (FIGS. 5-1 to 5-3) is an exploded perspective view of the multidirectional pressing switch 1 as viewed from below. In the following description, “upper (upper)” means the operating surface side (operating surface direction) for operating this multi-directional push switch 1, and “lower (lower)” means the opposite surface side (opposite surface direction). ).

  As shown in FIGS. 4 and 5, the multidirectional pressing switch 1 includes a circuit board (hereinafter referred to as “flexible circuit board”) 40, sliders 60, 61, and 63, and a ground member 70 in the lower case 10. And the rotating member 130 to which the switch pattern forming body 110 is attached, the hinge member 210 to which the swinging body 170 and the push button knob 190 are attached, and the click member 240, and attached so as to cover the upper case 260. Further, a swing knob body 280 and a rotary knob 300 are attached from above. The swing knob body 280 and the swing body 170 are collectively referred to as a swing knob 290 (see FIGS. 1 and 2). Each component will be described below.

  The lower case 10 is a molded product of synthetic resin (for example, ABS resin, PBT resin, POM resin, etc.) as shown in FIGS. 4-3 and 5-3, and has a cylindrical outer wall on the outer periphery of the disc-shaped bottom plate 11. 13, and a cylindrical side wall 15 is erected on the inner side of the outer wall 13 on the bottom plate 11. A space inside the side wall 15 is used as a switch storage portion 17, and a space between the side wall 15 and the outer wall 13 is formed. As the electrical function part storage space 19, a ground terminal insertion part 21 consisting of a pair of small holes is provided in the bottom plate 11 in the switch storage part 17, and a plurality (four in this embodiment) are provided on the upper end surface of the side wall 15. ) And a plurality of small pieces (eight in this embodiment, but only three are shown in FIG. 4-3) on the bottom plate 11 in the electrical functional unit storage space 19. A mounting portion 25 made of a protrusion is provided. A part of the outer wall 13 is provided with a leading portion insertion portion 27 formed by cutting out the outer wall 13, and a plurality of guide portions 29 formed of strip-shaped grooves extending in the vertical direction on the outer peripheral side of the outer wall 13. In the embodiment, the click member locking portion 31 is formed on the upper end surface of the outer wall 13 and is formed with a pair of small recesses close to each other at a position opposed to 180 °. A substrate insertion portion 33 is formed in the side wall 15 by cutting out a plurality of locations (four locations in this embodiment) at equal intervals.

  The flexible circuit board 40 uses an insulating synthetic resin film having flexibility (in this embodiment, a polyethylene terephthalate (PET) film which is a thermoplastic synthetic resin film is used, but other thermoplastic or thermosetting synthetic films are used). A resin film may be used.) Is formed in a circular shape having an outer dimension that can be accommodated inside the outer wall 13 of the lower case 10, and a ring-shaped side wall is inserted in a position facing the side wall 15 of the lower case 10 in the inside. A portion 41 is provided, and a belt-like lead portion 43 is drawn from the outer periphery thereof. And the inner part partitioned by the side wall insertion part 41 is used as a switch board (first electrical function part installation part) 45, and the outer part is used as a slider attachment part (second electrical function part installation part) 47. Yes. The switch board 45 and the slider mounting portion 47 are connected to the side wall insertion portion 41 by a plurality of connecting pieces 49 provided at equal intervals (four in this embodiment). A plurality (five in this embodiment) of switches 51 (one at the center and four at equal intervals around the periphery) are provided on the upper surface of the switch board 45, and 180 near the outer periphery of the switch board 45. A ground insertion portion 53 formed of a pair of rectangular small holes is provided at a position opposed to each other. The slider mounting portion 47 is provided with arc-shaped conductive patterns 55a, b, c at a plurality of positions (three in this embodiment), and positions where the lead portions 43 are connected to the conductive patterns 55a, b, c. A mounting portion 57 made of a small hole is provided on the top. Each switch 51 has an inversion plate (movable contact plate) made of a dome-shaped conductive plate (metal plate) on a pair of contact patterns (not shown) formed on the flexible circuit board 40 by screen printing or the like. It consists of One contact pattern is in contact with the outer periphery of the reversing plate. When the upper surface of the reversing plate is pressed and reversed while generating a clicking sensation, the center lower surface comes into contact with the other contact pattern. Makes the contact pattern conductive.

  All of the sliders 60, 61, and 63 that constitute the electrical functional unit are made of an elastic metal plate (for example, phosphor bronze), the slider 60 is a common slider, and the sliders 61 and 63 are for output. It is a slider. The slider 60 projects sliding contact portions 60b and 60c from both ends of a flat plate arc-shaped base portion 60a, and mounting portions 57 at a plurality of locations in the base portion 60a (three locations facing the mounting portion 57 of the flexible circuit board 40). The mounting insertion part 60d which consists of a small hole of the same diameter as is provided. The sliders 61 and 63 project the sliding contact portions 61b and 63b from one end of the flat plate arc-shaped base portions 61a and 63a, and a plurality of locations in the base portions 61a and 63a (2 facing the mounting portion 57 of the flexible circuit board 40). The mounting insertion portions 61d and 63d, which are small holes having the same diameter as the mounting portion 57, are provided at the same location. Each sliding contact portion 60b, 60c, 61b, 63b is bent upward (on the operation surface side) at the root portion connected to the base portions 60a, 61a, 63a.

  FIG. 6 is an enlarged perspective view showing the ground member 70. As shown in the figure, the ground member 70 is made of a conductive plate, and in this embodiment, a metal plate such as stainless steel is used. The ground member 70 integrally connects an outer peripheral ground member 77 composed of a plurality (four) of arc-shaped portions and a ring-shaped inner ground member 71 by a plurality (four) of connecting portions 83. That is, the ground member 70 is composed of a single plate.

  More specifically, the inner peripheral grounding member 71 is a substantially cross-shaped flat plate, the inside of which is an opening 73, which is connected from the outer periphery of the four protruding portions of the inner grounding member 71, respectively. The part 83 protrudes and the outer periphery earth | ground member 77 is provided in those front end sides. Each connecting portion 83 is a flat plate that is attached to the distal end side by bending the connecting portion with the internal ground member 71 upward by 90 ° and further bending the connecting portion between the connecting portion 83 and the outer peripheral ground member 77 by 90 ° outward. The surface of the outer peripheral grounding member 77 is positioned above and parallel to the surface of the internal grounding member 71. The outer peripheral ground member 77 is horizontal and arcuate. At the center of each outer grounding member 77, a locking portion 79 is provided that is a small hole inserted into the locking portion 23 of the lower case 10. A pair of tongue-shaped grounding portions 81 that are bent 90 ° downward and project from the portion of the opening 73 of the internal grounding member 71 located at the base of the connecting portion 83 are provided at positions that face 180 °. . These ground portions 81 are formed in dimensions that can be inserted into the ground terminal insertion portion 21 at positions facing the ground terminal insertion portion 21 of the lower case 10.

  The switch pattern forming body 110 has a synthetic resin film (in this embodiment, a flexible PET film is used, but another thermoplastic or thermosetting synthetic resin film or a hard plate may be used) at the center. Are formed in a circular ring shape with circular through-holes 111 formed on the lower surface (surface facing the lower case 10 side) of the ring shape, and a plurality (12 in this embodiment) of substantially rectangular electricity The sliding contact pattern 112 that constitutes the functional part is formed. Each sliding contact pattern 112 is connected by a connection pattern 113 provided in a ring shape close to the through hole 111. Small projection-like positioning portions 115 protrude from a plurality of equally spaced positions (four locations in this embodiment) on the outer periphery of the switch pattern forming body 110.

  The rotating body 130 is a molded product formed by molding a synthetic resin (for example, polycarbonate resin or the like) into a substantially flat ring shape, and is configured by providing a shaft support portion 131 penetrating circularly in the center. The inner diameter dimension of the shaft support portion 131 is formed to be slightly larger than the outer diameter dimension of the side wall 15 so that the rotating body 130 is rotatably supported on the outer periphery of the side wall 15 of the lower case 10. The outer diameter of the rotating body 130 is formed such that it can be stored inside the outer wall 13 of the lower case 10. A click engagement portion 133 formed of ring-shaped irregularities is provided on the outer periphery on the upper surface side of the rotating body 130, and a plurality of concentric circular arcs (four in this embodiment) are formed on the inner side thereof. A sliding contact portion 135 that protrudes in the direction is provided, and a plurality of (four in this embodiment) columnar mounting portions 137 are provided at equal intervals around the inner shaft support portion 131. A press-fit portion 139 composed of a circular recess is provided on the upper end surface of the mounting portion 137. The sliding contact portion 135 is provided at a position where it contacts (sliding contact) around the opening 267 on the lower surface of the upper case 260 described below, and the mounting portion 137 is provided at a position exposed in the opening 267 of the upper case 260. On the lower surface of the rotating body 130, a switch pattern forming body mounting portion 141 formed of a ring-shaped plane is provided. Locking portions 143 for inserting these are provided at positions facing the positioning portions 115 of the switch pattern forming body 110 of the switch pattern forming body mounting portion 141. The switch pattern forming body 110 may be attached to the switch pattern forming body mounting portion 141 of the rotating body 130 by adhesion or the like, but in this embodiment, as can be seen from FIGS. 2 and 3, the switch pattern forming body 110 is rotated. It is attached to the switch pattern forming body attaching portion 141 of the body 130 by insert molding.

  The rocking body 170 is formed by molding a synthetic resin (for example, ABS resin, PBT resin, POM resin, etc.) into a substantially ring shape. That is, a swinging main body portion 171 having a substantially flat ring shape and having a circular knob insertion hole 173 at the center, and a plurality of them at equal intervals so as to protrude to the outer peripheral lower surface side of the swinging main body portion 171 (in this embodiment, 4) A plurality of columnar knobs provided so as to protrude downward on the inner side (knob insertion hole 173 side) of each of the swinging knob mounting portions 175 provided on the lower surface of the swinging main body portion 171. (Four) pressing portions 177, and a plurality of (four) columnar hinge mounting portions 179 provided so as to protrude downward at intermediate positions of the respective pressing portions 177 on the lower surface of the swinging main body portion 171. It is provided and configured. Each swing knob attaching portion 175 is formed in a box shape having a through-hole 178 penetrating vertically, and out of a cylindrical part forming the box shape, a pair of left and right (projecting outwardly in the radial direction when the swing body 70 is viewed from above). A pair of left and right side guides both sides of a click engaging portion 285 of the swing knob main body 280 described below so as to be insertable, and protrudes most outward in the radial direction when the tip (the swing body 70 is viewed from above). The lower side of the side) portion is a snap engagement portion 183.

  The push button knob 190 is formed by molding a synthetic resin (for example, ABS resin, PBT resin, POM resin, etc.), and a knob body 191 formed in a substantially circular column shape and a radial direction from the lower outer periphery of the knob body 191. A ring-shaped collar portion 193 projecting outward, a circular columnar pressing portion 195 protruding from the center of the lower surface of the knob main body 191, and a fixing portion 197 including small protrusions provided on both sides of the pressing portion 195 on the lower surface of the knob main body 191. It comprises.

  The hinge member 210 is made of a flexible synthetic resin film (in this embodiment, a PET film is used, but another synthetic resin film may be used), and a ring-shaped connecting portion 211 that surrounds the outer periphery, And a plurality of (four) hinge portions 215 that project radially from the periphery of the push button knob mounting portion 213 and connect their tips to the connecting portion 211. ing. In the center of the push button knob mounting portion 213, there is provided a circular penetrating insertion portion 217 for inserting the pressing portion 195 of the push button knob 190, and the fixing portions 197 of the push button knob 190 are provided on both sides of the insertion portion 217. A circular penetrating engagement portion 219 to be inserted is provided. An opening 221 for increasing the flexibility of the push button knob mounting portion 213 with respect to the hinge portion 215 is provided at a portion where each hinge portion 215 and the push button knob mounting portion 213 are connected to each other. In the middle position, a circular penetrating fixing portion 223 for inserting the hinge mounting portion 179 of the rocking body 170 is provided, and in the vicinity of the end portion on the connecting portion 211 side of each hinge portion 215, the lower case 10 is provided. A penetrating circular fixing portion 225 inserted into the locking portion 23 is provided.

  The click member 240 is a thin plate-like elastic metal plate formed in a ring shape, provided with a mounting portion 241 at a portion opposed to 180 °, and a pair of arc-shaped elastic portions 243 connecting both the mounting portions 241 downward. The elastic contact portion 245 is formed by bending a little and bending it in an arc shape so that an intermediate portion of each elastic portion 243 protrudes downward. An engaging recess 247 that is recessed in a rectangular shape is provided on the outer side of the mounting portion 241.

  The upper case 260 is formed by processing a metal plate such as stainless steel. The upper case 260 protrudes radially outward from the outer periphery of the main body 261 and the main body 261 by 90 °. A plurality of (in this embodiment, four) attachment pieces 263 that are bent downward, and projecting radially outward from the outer periphery of the main body portion 261, and bending the root portion downward 90 °. And a substantially band-shaped lid portion 265. A circular opening 267 is provided at the center of the main body 261. Each attachment piece 263 is formed at a position and a size so as to be exactly inserted into each guide portion 29 of the lower case 10. The lid portion 265 is formed at a position and a size that substantially cover the drawer insertion portion 27 of the lower case 10. The lower portion of the lid portion 265 is bent outward in the radial direction, and then bent upward (that is, bent in a substantially J shape as a whole). The reason for this bending is that the lead-out portion 43 of the flexible circuit board 40 that passes under the lid portion 265 bends so that the lead-out portion 43 is not damaged even if it comes into contact with the lower side of the lid portion 265. Because.

  The swing knob main body 280 is formed by molding resin (for example, ABS resin, PBT resin, POM resin, etc.) into a substantially disc shape, and a knob through which the knob main body 191 of the push button knob 190 is inserted at the center. An exposed portion 281 is provided, and a ring-shaped and concave flange portion storage portion 283 for receiving the flange portion 193 of the push button knob 190 is provided around the knob exposed portion 281 on the lower surface of the swing knob main body 280, and the swing knob body 280 swings. A click engagement portion 285 that protrudes downward is provided at a position on the lower surface of the knob body 280 that faces each swing knob mounting portion 175 (its through hole 178) of the swing body 170. The click engaging portion 285 is configured by a thin plate-like elastic portion 285a having elasticity and a claw portion 285b provided at the tip (lower end) of the elastic portion 285a. In addition, a symbol portion 287 indicating the pressing direction is formed by a concave portion at a position directly above the click engagement portion 285 on the upper surface of the swing knob body 280.

  The rotary knob 300 is formed by molding a synthetic resin (for example, ABS resin, PBT resin, POM resin, etc.) into a substantially ring shape, and a circular knob insertion hole 301 for inserting the swing knob main body 280 is formed at the center. Is provided. The inner diameter of the knob insertion hole 301 is slightly larger than the outer diameter of the swing knob body 280. Protrusions 303 are provided on the upper surface of the rotary knob 300 at equal intervals so that the operation with a finger can be easily performed. On the other hand, around the knob insertion hole 301 on the lower surface of the rotary knob 300, there are provided circular cylindrical projecting portions 305 projecting downward, and projecting portions 305 are provided at four equally spaced locations within the projecting portion 305. A recess 307 formed by notching is provided, and in each recess 307, a small protrusion-like attachment portion 309 protruding from the bottom surface is provided. The outer diameter of the protrusion 305 is slightly smaller than the inner diameter of the opening 267 of the upper case 260. Each attachment portion 309 is formed at a position facing each press-fit portion 139 of the rotating body 130 with an outer diameter dimension slightly larger than the inner diameter of the press-fit portion 139. In the middle of the portion of the protrusion 305 divided by the recesses 307, the opening 311 is provided at the base portion of the protrusion 305, so that the thickness of the lower protrusion 305 provided with the opening 311 is reduced. The arch-shaped elastic portion 313 is made thin and elastic, and a claw-shaped engaging portion 315 protruding outward in the radial direction is provided in the middle of the elastic portion 313. Each engaging portion 315 is formed such that at least the diameter of the circle connecting the tips thereof is larger than the inner diameter of the opening 267 of the upper case 260.

  Next, a method for assembling the multidirectional pressing switch 1 will be described. In this embodiment, the switch pattern forming body 110 is insert-molded in advance with the sliding contact pattern 112 exposed on the switch pattern forming body mounting portion 141 on the lower surface of the rotating body 130. Further, the rocking body 170 and the push button knob 190 are placed on the hinge member 210 in advance, and at this time, the pressing portion 195 of the push button knob 190 is inserted into the insertion portion 217 of the hinge member 210, and at the same time, each engaging portion of the hinge member 210 is engaged. Each fixing portion 197 of the push button knob 190 is inserted into 219, and at the same time, each hinge mounting portion 179 of the swinging body 170 is inserted into each fixing portion 223 of the hinge member 210. At this time, each pressing portion 177 of the swinging body 170 projects to the lower surface side of the hinge member 210 through an opening portion between the cross-shaped hinge portions 215 of the hinge member 210, and the knob body 191 of the push button knob 190 is the swinging body. 170 is inserted into the knob insertion hole 173. Then, the push button knob 190 and the swinging body 170 are mounted on the hinge member 210 by thermally crimping the tips of the fixing portions 197 and the hinge mounting portions 179.

  Then, the flexible circuit board 40 is accommodated in the lower case 10. At that time, the side wall 15 of the lower case 10 is inserted into the side wall insertion portion 41 of the flexible circuit board 40, and at the same time, each mounting portion 25 of the lower case 10 is inserted into each mounting portion 57 of the flexible circuit board 40. At this time, the positions of the ground terminal insertion portion 21 of the lower case 10 and the ground insertion portion 53 of the flexible circuit board 40 coincide. Next, base portions 60a, 61a, 63a of the respective sliders 60, 61, 63 are placed on the respective conductive patterns 55a, b, c on the flexible circuit board 40, and projecting on the flexible circuit board 40 at that time. Each mounting portion 25 (except one) of the lower case 10 is inserted into the mounting insertion portions 60d, 61d, 63d of the base portions 60a, 61a, 63a. And if the front-end | tip of all the attaching parts 25 is crimped by heat, the flexible circuit board 40 and each slider 60, 61, 63 will be fixed on the baseplate 11 of the lower case 10. FIG.

  Next, the ground member 70 is housed in the lower case 10, and the outer peripheral ground member 77 of the ground member 70 is placed on the side wall 15 of the lower case 10. At this time, as shown in FIG. 2, the connecting portion 83 causes the internal ground member 71 to be installed closer to the switch board 45 than the outer peripheral ground member 77 with a step in the vertical direction. Each locking portion 23 of the lower case 10 is inserted into each locking portion 79 of each outer peripheral ground member 77. At this time, the pair of ground portions 81 of the ground member 70 are inserted into the pair of ground terminal insertion portions 21 of the lower case 10 through the ground insertion portion 53 of the flexible circuit board 40, and their tips are slightly on the lower surface side of the lower case 10. Exposed to.

  Next, the hinge member 210 to which the rocking body 170 and the push button knob 190 are attached is placed on the ground member 70, and at this time, each latch of the lower case 10 protruding on the outer peripheral ground member 77 of the ground member 70. The part 23 is inserted into each fixing part 225 of the hinge member 210. And each latching | locking part 23 is crimped by heat on the hinge member 210, and the earth member 70 and the hinge member 210 are fixed in the lower case 10 by this.

  Next, the rotating body 130 to which the switch pattern forming body 110 is attached is housed in the electrical function part housing space 19 of the lower case 10. At this time, the rotating body 130 is rotatably supported by the shaft support 131 on the outer periphery of the side wall 15 of the lower case 10. Next, the click member 240 is housed in the electrical function portion housing space 19 of the lower case 10, and at this time, the radially outer half portions (engagement recess 247 portions) of the pair of mounting portions 241 of the click member 240 are lowered. The pair of click member locking portions 31 on the outer wall 13 of the case 10 are engaged and held. Next, the upper case 260 is put on the lower case 10, the mounting pieces 263 of the upper case 260 are inserted into and engaged with the guide portions 29 of the lower case 10, and the tips of the mounting pieces 263 are placed on the lower surface of the lower case 10. Bend it.

  Then, by installing the swing knob body 280 on the upper surface side of the swing body 170, each click engaging portion 285 of the swing knob body 280 is snapped to each swing knob mounting portion 175 (through hole 178) of the swing body 170. The swinging knob 290 is integrated by in-engagement. In this snap-in engagement, the claw portion 285b of the click engagement portion 285 is inserted into the through hole 178 of the swinging knob mounting portion 175, and at this time, the claw portion 285b is inserted into the snap engagement portion 183 (FIGS. 4-2, 5-5). 2)), the elastic portion 285a is bent inward, and further inserted, the claw portion 285b enters the lower side of the snap engaging portion 183 to release the bending of the elastic portion 285a. Is done.

  On the other hand, by installing the rotary knob 300 on the upper surface side of the rotating body 130 with the upper case 260 interposed therebetween, the mounting portions 309 of the rotating knob 300 are press-fitted into the press-fit portions 139 of the mounting portions 137 of the rotating body 130. At the same time, the respective engaging portions 315 of the rotary knob 300 are brought into contact with the inner periphery of the opening 267 of the upper case 260 and the elastic portions 313 are bent to thereby bring the respective engaging portions 315 into the opening 267 side (inner side). Snap-in engagement with the lower surface of the upper case 260 while pushing. At this time, as shown in FIG. 2, there is a slight gap between each engaging portion 315 and the lower surface of the upper case 260. That is, the rotation knob 300 is attached by press-fitting the attachment portion 309 into the press-fitting portion 139, and each engagement portion 315 is provided to prevent the rotation knob 300 from being detached.

  This completes the assembly of the multidirectional push switch 1. At this time, the swing knob body 280 is exposed in the knob insertion hole 301 of the rotary knob 300. In this multi-directional press type switch 1, a pressing portion 177 of the swinging body 170 and a pressing portion 195 of the push button knob 190 are positioned on each switch 51, while the mounting portion 241 of the click member 240 has a lower case. 10 is fixed between the outer wall 13 and the upper case 260, and the elastic contact portion 245 thereof is in elastic contact with the surface of the click engagement portion 133 of the rotating body 130. The contact portions 60b, 60c, 61b, and 63b are in elastic contact with the surface of the switch pattern forming body 110 on which the sliding contact pattern 112 is provided.

  FIG. 7 is a diagram showing the positional relationship among the ground member 70, the switches 51, and the pressing portions 177 and 195. As shown in the figure, the internal ground member 71 is bent on a plane as described above so that it is not disposed at the upper center of each switch 51. In other words, the internal ground member 71 is bent and formed in a shape that passes between the switches 51 so that the upper center of each switch 51 is exposed upward.

  When a predetermined portion (especially, the portion of the symbol portion 287) on the upper surface of the swing knob 290 (the swing knob main body 280 and the swing body 170 attached thereto) is pressed, the hinge portion 215 of the hinge member 210 is bent. Then, the swinging knob 290 swings, and the pressing portion 177 at the position where the swinging knob 290 is pressed and pressed presses the switch 51 facing it to turn it on. When the pressing is released, the swing knob 290 is returned to the original position by the elastic return force of the hinge plate 215 and the reverse plate constituting the switch 51, the reverse of the reverse plate is also released, and the switch 51 is turned off.

  Next, when the knob main body 191 of the push button knob 190 is pressed, the push button knob 190 is lowered by the deflection of the hinge portion 215 of the hinge member 210, and the lowered pressing portion 195 presses the switch 51 opposite to the switch 51 to turn it on. When the pressing is released, the push button knob 190 is returned to the original position by the elastic return force of the hinge 215 and the reversing plate constituting the switch 51, the reversing of the reversing plate is also released, and the switch 51 is turned off.

  On the other hand, when the rotary knob 300 is rotated, the rotary body 130 and the switch pattern forming body 110 rotate integrally with the rotary knob 300, and the slider 60 in which the sliding contact pattern 112 provided on the switch pattern forming body 110 is fixed to the lower case 10. , 61, 63 slide on the sliding contact portions 60b, 60c, 61b, 63b. At this time, the elastic contact portion 245 of the click member 240 slides while elastically contacting the click engagement portion 133 of the rotating body 130, so that a desired click feeling is generated. The slider 60 is a common slider in which at least one of the pair of contact portions 60 b and 60 c is always in contact with any one of the sliding contact patterns 112. Further, the slider 61 and the slider 63 are such that their sliding contact portions 61b and 63b are in contact with any one of the sliding contact patterns 112 with a phase difference (with a certain deviation in the contact position). The electrical function unit is used as a rotary encoder. If all the sliders 60, 61, 63 are installed on one track as in this embodiment, the installation area can be reduced as compared with the case where a plurality of tracks are provided, which is effective for miniaturization. In this embodiment, the sliding contact pattern 112 is attached to the rotating body 130 that is the rotating member, and the sliders 60, 61, and 63 are attached to the lower case 10 that is the fixed member. The child and lower case 10 may be provided with a sliding contact pattern.

  The metallic upper case 260 and the ground member 70 of the multidirectional push switch 1 are grounded (the ground member 70 is grounded at the tip of the ground portion 81 exposed on the lower surface of the lower case 10). When the push button knob 190, the swing knob 290 (the swing knob main body 280), and the rotary knob 300 are operated with a charged finger or the like, static electricity that enters from between the outer periphery of the rotary knob 300 and the upper case 260 is the upper case. 260. In addition, static electricity that is about to enter from the outer periphery of the swing knob 290 (that is, the gap between the swing knob main body 280 and the rotary knob 300) is taken into the outer peripheral ground member 77 of the ground member 70 that is positioned opposite thereto. Further, static electricity that is about to enter from the gap between the swing knob 290 and the push button knob 190 is taken into the internal ground member 71 of the ground member 70 located therebelow. Therefore, even when any one of the push button knob 190, the swing knob 290, and the rotary knob 300 is operated with a charged finger or the like, static electricity can enter the electrical function units such as the switches 51 and the conductive patterns 55a, 55b, and 55c. There is no.

  In other words, the multidirectional pressing switch 1 is provided on a switch board 45 provided with a switch 51, and on the switch board 45 so as to be swingable in multiple directions, and at a position facing each switch 51 (except for the central one). And a swing knob 290 provided with a pressing portion 177, and a multi-directional pressing switch 1 that presses the switch 51 facing the pressing portion 177 by the pressing portion 177 lowered by swinging the swing knob 290. Discloses a configuration in which an outer peripheral ground member 77 made of a conductive plate is installed on the lower surface side of the outer periphery of the swing knob 290. Then, only by a simple structure in which the outer peripheral grounding member 77 made of a conductive plate is installed on the lower surface side of the outer periphery of the swing knob 290, the static electricity that is about to enter the lower surface side from the outer periphery of the swing knob 290 is removed. Therefore, it is possible to reliably catch the member 77, and thus it is possible to reliably prevent the intrusion of static electricity into various electrical functional units installed on the lower surface side.

  In addition, the multi-directional push switch 1 includes a push button knob 190 that can be moved up and down inside the swing knob 290, and a switch 51 that is disposed at a position facing the pressing portion 195 of the push button knob 190. Since the internal grounding member 71 made of a conductive plate is installed on the lower surface side of the gap formed between the 290 and the push button knob 190, the gap between the swing knob 290 and the push button knob 190 can be reduced only by a simple structure. The internal grounding member 71 can reliably capture static electricity that tends to enter the lower surface side, and therefore, it is possible to reliably prevent the intrusion of static electricity into various electrical functional units installed on the lower surface side.

  In addition, the multi-directional pressing switch 1 is provided with a rotary knob 300 that rotates around the swing knob 290 on the outer periphery of the swing knob 290, and the electrical rotation of the rotary knob 300 is performed by rotating the rotary knob 300. Since the electrical function part including the sliding contact pattern 112 that changes the output and the sliders 60, 61, 63 is installed, even when the rotary knob 300 is installed on the outer periphery of the swing knob 290, the rotary knob 290 rotates. Static electricity entering from the gap between the knobs 300 is reliably caught by the outer peripheral grounding member 77, and therefore, it is possible to reliably prevent the static electricity from entering the electrical function unit that changes its electrical output by the rotation of the rotary knob 300. .

  In addition, the multi-directional pressing switch 1 includes the outer peripheral ground member 77 and the inner ground member 71 as a ground member 70 integrated with each other, so that the number of parts is reduced, the number of assembly steps is reduced, and the manufacturing cost is reduced. Is reduced. Further, since the internal ground member 71 is installed closer to the switch board 45 than the outer peripheral ground member 77, both are connected by the connecting portion 83 with a step in the vertical direction. Intrusion of static electricity into each switch 51 operated by the 290 or the push button knob 190 can be reliably prevented. The reason why the internal ground member 71 and the outer peripheral ground member 77 have a vertical step is as follows. That is, in this embodiment, the rotary knob 300 surrounding the swing knob 290 and the rotating body 130 that rotates integrally with the rotary knob 300 are installed. A side wall 15 is erected on the outer periphery of the switch board 45 to rotatably support the rotating body 130. For this reason, if it is attempted to install the outer peripheral grounding member 77 at a position facing the outer periphery of the swing knob 290 (the gap between the swing knob 290 and the rotary knob 300), it is necessary to install it on the upper surface of the side wall 15. It is desired to install the internal ground member 71 close to the switch 51. Therefore, as in this embodiment, the internal ground member 71 and the outer peripheral ground member 77 are provided with a step in the vertical direction. Therefore, depending on the case, the ground member 70 may have a shape that does not cause the step.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible. It should be noted that any shape, structure, and material not directly described in the specification and drawings are within the scope of the technical idea of the present invention as long as the effects and advantages of the present invention are exhibited. For example, in the above-described embodiment, the push button knob 190 and the corresponding switch 51 are provided and thus the push switch mechanism is provided. However, a multi-directional push switch without this push switch mechanism may be used. In the above embodiment, the rotary knob 300, the rotary body 130, the switch pattern forming body 110, the sliders 60, 61, 63, the slider mounting portion 47, the electrical function portion storage space 19 and the like are provided to provide a rotary electronic component. Although the mechanism is configured, this rotary electronic component mechanism may be omitted. Also, the ground member 70 can be variously modified. For example, the outer peripheral ground member 77 may be divided into a plurality other than four, and conversely, the outer peripheral ground member 77 may be formed by a single integrated ring. Further, the shape of the internal ground member 71 is not substantially cross-shaped, and various modifications may be made according to the arrangement state of the switches 51 positioned therebelow. In short, the shape of the ground member 70 is such that the outer peripheral ground member 77 is disposed on the lower surface side of the outer periphery of the swing knob 290, and the inner ground member 71 is disposed on the lower surface side of the gap between the swing knob 290 and the push button knob 190. Any structure may be used as long as it can be arranged. In the above embodiment, the outer peripheral grounding member 77 and the inner grounding member 71 are integrally formed. However, they may be configured separately and attached separately.

  In the above embodiment, the flexible circuit board 40 using the reversal plate as the movable contact plate is shown as the switch 51. However, a pair of synthetic resin films are overlapped, and a pair of positions provided on the opposing surfaces of both films are opposed to each other. You may comprise with a flexible circuit board which comprises the switch of what is called a membrane switch structure comprised by making a contact pattern oppose through a predetermined clearance gap by a spacer layer. At this time, the reversing plate may be installed on the opposite surface side (upper surface side) of the portion provided with the contact pattern of the upper synthetic resin film, or may be omitted.

  In the above embodiment, the flexible circuit board 40 is used, but a hard circuit board may be used instead. In that case, the circuit board may also be used as the lower case 10. Moreover, in the said embodiment, although the switch pattern was used as the sliding pattern of an electrical function part, you may use other various sliding patterns, such as a resistor pattern. In short, the electrical function unit may be a structure that changes its electrical output by rotating the rotating body 130. In the above embodiment, the hinge member 210 is formed of a synthetic resin film. However, the hinge member 210 may be formed of another material such as a rubber material or a synthetic resin molded product. The shape and structure of the hinge member 210 can be variously modified. For example, the connecting portion 211 may be deleted. The opening 221 may also be omitted. When the hinge member 210 is formed of a molded product, it may be formed by integral molding with another member, such as the rocking body 170. In the above-described embodiment, the swing knob main body 280 and the swing body 170 are configured as separate parts. However, both parts may be formed as an integrally molded product as the operation knob 290.

1 is a perspective view of a multidirectional pressing switch 1. FIG. 1 is a cross-sectional perspective view of a multidirectional pressing switch 1. 1 is a cross-sectional perspective view of a multidirectional pressing switch 1. It is the disassembled perspective view (upper part) which looked at the multidirectional press type switch 1 from the upper side. It is the disassembled perspective view (intermediate part) which looked at the multidirectional press type switch 1 from the upper side. It is the disassembled perspective view (lower part) which looked at the multidirectional press type switch 1 from the upper side. It is the disassembled perspective view (upper part) which looked at the multidirectional press type switch 1 from the lower side. It is the disassembled perspective view (intermediate part) which looked at the multidirectional press type switch 1 from the lower side. It is the disassembled perspective view (lower part) which looked at the multidirectional press type switch 1 from the lower side. It is a perspective view which expands and shows the grounding member. It is a figure which shows the positional relationship of the ground member 70, each switch 51, and each press part 177,195.

Explanation of symbols

1 Multidirectional push switch 10 Lower case 40 Flexible circuit board (circuit board)
45 Switch board 51 Switch 60, 61, 63 Slider 70 Grounding member 71 Internal grounding member 77 Outer peripheral grounding member 81 Grounding part 83 Connecting part 110 Switch pattern forming body 112 Sliding contact pattern 130 Rotating body 170 Oscillating body 177 Pressing part 190 Push button Knob 195 Pressing part 210 Hinge member 240 Click member 260 Upper case 280 Oscillating knob body 290 Oscillating knob 300 Rotating knob

Claims (5)

A switch board provided with a switch, and a swing knob provided on the switch board so as to be swingable in multiple directions and provided with a pressing portion at a position facing each switch,
In the multi-directional press type switch that presses the switch facing the pressing portion by the pressing portion that the swing knob swings and descends,
A multi-directional pressing switch characterized in that an outer peripheral ground member made of a conductive plate is installed on the lower surface side of the outer periphery of the swing knob. A push button knob is installed inside the swing knob so as to be movable up and down, and a switch is installed at a position facing the pressing portion of the push button knob.
2. The multidirectional pressing switch according to claim 1, wherein an internal ground member made of a conductive plate is provided on a lower surface side of a gap formed between the swing knob and the push button knob.   A rotary knob that rotates around the swing knob is installed on the outer periphery of the swing knob, and an electrical function unit that changes its electrical output by the rotation of the rotary knob is installed on the lower surface side of the rotary knob. The multidirectional pressing switch according to claim 1 or 2.   The multi-directional pressing switch according to claim 2, wherein the outer peripheral grounding member and the internal grounding member are constituted by a grounding member integrated with them.   The internal grounding member is installed closer to the switch board than the outer peripheral grounding member, and the two are connected by a connecting portion with a step in the vertical direction. 5. A multidirectional pressing switch according to 4.

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