WO2021029102A1 - プッシュスイッチ - Google Patents

プッシュスイッチ Download PDF

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Publication number
WO2021029102A1
WO2021029102A1 PCT/JP2020/011612 JP2020011612W WO2021029102A1 WO 2021029102 A1 WO2021029102 A1 WO 2021029102A1 JP 2020011612 W JP2020011612 W JP 2020011612W WO 2021029102 A1 WO2021029102 A1 WO 2021029102A1
Authority
WO
WIPO (PCT)
Prior art keywords
case
push switch
pressing
operation unit
base portion
Prior art date
Application number
PCT/JP2020/011612
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
晃 金子
俊彦 田澤
Original Assignee
アルプスアルパイン株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by アルプスアルパイン株式会社 filed Critical アルプスアルパイン株式会社
Priority to JP2021539814A priority Critical patent/JP7232919B2/ja
Publication of WO2021029102A1 publication Critical patent/WO2021029102A1/ja

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/04—Cases; Covers
    • H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button

Definitions

  • the present invention relates to a push switch.
  • the push switch of one embodiment is provided in a case having a storage space having an upper opening, a fixed contact provided at the bottom of the storage space, a movable contact member arranged in the storage space, and an upper portion of the case. It has an operation unit, an internal space provided inside the operation unit, and a base portion expanded outward from the lower end portion of the operation unit, and the operation unit is subjected to a pressing operation on the operation unit.
  • a pressing member that presses the movable contact member so that the movable contact member comes into contact with the fixed contact due to elastic deformation, and a fixing member that fixes the pressing member to the case by pressing the base portion from above.
  • the member has a through hole leading to the internal space in a region inside the outer peripheral portion of the base portion that is pressed against the case.
  • FIG. 1 is an external perspective view of the push switch 100 according to the embodiment.
  • the push switch 100 includes a housing 100A having a thin rectangular parallelepiped shape in the Z-axis direction.
  • the housing 100A includes a case 140 and a frame 105 attached to the upper part of the case 140.
  • the housing 100A is provided with a rubber stem 110 projecting upward from a circular opening 105A formed in the frame 105.
  • the push switch 100 can be switched between the on state and the off state by pressing the rubber stem 110 downward. Specifically, the push switch 100 is turned off when the rubber stem 110 is not pressed, and the first fixed contact 142 (see FIG. 2) and the second fixed contact 144 (see FIG. 2) provided in the case 140 (see FIG.
  • the push switch 100 is turned on when the rubber stem 110 is pressed downward, and the first fixed contact 142 and the second fixed contact 144 are brought into a conductive state.
  • the rubber stem 110 is released from the pressing operation, the rubber stem 110 automatically returns to its original state due to the elastic recovery force. As a result, the push switch 100 is automatically turned off.
  • FIG. 2 is an exploded perspective view of the push switch 100 according to the embodiment.
  • FIG. 3 is a cross-sectional view of the push switch 100 according to the embodiment in a YZ plane.
  • the push switch 100 includes a frame 105, a rubber stem 110, an insulator 160, a metal contact 130, and a case 140 in this order from the top.
  • the frame 105 is an example of a "fixing member".
  • the frame 105 is a metal and flat plate-shaped member that constitutes the housing 100A together with the case 140 by being attached to the upper part of the case 140.
  • the frame 105 is fixedly attached to the upper part of the case 140, so that the metal contact 130 is accommodated in the accommodation space 140A of the case 140, and the rubber is provided so as to close the upper opening of the accommodation space 140A.
  • the stem 110 is sandwiched between the stem 110 and the upper surface of the case 140.
  • the frame 105 is formed by processing a metal plate.
  • the frame 105 is formed with a circular opening 105A for projecting the rubber stem 110 upward.
  • hooks 105B hanging downward are provided on each of the two sides of the outer peripheral edge of the frame 105 parallel to the Y axis.
  • the hook 105B has an opening 105Ba, and a claw portion 146 provided on the side surface of the case 140 is fitted into the opening 105Ba. As a result, the hook 105B fixes the frame 105 to the case 140.
  • the rubber stem 110 is an example of a "pressing member".
  • the rubber stem 110 is a member that is pressed downward by the operator.
  • the rubber stem 110 is provided on the lower side of the frame 105.
  • the rubber stem 110 has an operation portion 112 and a base portion 116.
  • the operation unit 112 has a pressing unit 112A and a peripheral wall portion 112B.
  • the pressing portion 112A has a cylindrical shape and is a portion where a pressing operation is performed by the operator.
  • the peripheral wall portion 112B is integrally formed with the pressing portion 112A, and is a portion having a skirt shape extending outward while extending outward from the lower end portion of the pressing portion 112A. As shown in FIG.
  • the operation unit 112 has an internal space 112C inside the peripheral wall portion 112B, that is, has a hollow structure.
  • the base portion 116 is a plate-shaped portion having a certain thickness and having a rectangular shape in a plan view from above.
  • the base portion 116 is integrally formed with the lower end portion of the peripheral wall portion 112B forming an annular shape, and supports the lower end portion of the peripheral wall portion 112B. That is, the base portion 116 is integrally formed with the operation portion 112, surrounds the operation portion 112, and supports the lower end portion of the operation portion 112.
  • the base portion 116 is sandwiched between the frame 105 and the upper surface of the case 140.
  • the operating portion 112 penetrates the opening 105A of the frame 105 and projects upward of the frame 105. As a result, the rubber stem 110 can be pressed downward by the operator from above the frame 105.
  • the rubber stem 110 is formed by using an elastic material (for example, silicon, rubber, etc.).
  • the peripheral wall portion 112B is elastically deformed by the pressing operation of the pressing portion 112A, so that the pressing portion 112A can be sunk downward and an operating load can be applied to the pressing operation.
  • the peripheral wall portion 112B can be deformed so as to suddenly lose its skirt shape when a predetermined amount of operating load is exceeded, that is, a so-called reversing operation.
  • the rubber stem 110 is provided with a protruding portion 113 protruding downward from the lower surface of the pressing portion 112A into the internal space 112C of the peripheral wall portion 112B.
  • the protruding portion 113 is a portion that presses the metal contact 130 downward by abutting on the top of the metal contact 130 as the pressing portion 112A sinks.
  • the insulator 160 is an example of a "sealing member".
  • the insulator 160 is a sheet-like member. As shown in FIG. 3, the insulator 160 is sandwiched between the bottom surface of the base portion 116 of the rubber stem 110 and the upper surface of the case 140. As a result, the insulator 160 seals the accommodation space 140A by closing the upper opening of the accommodation space 140A of the case 140, and also closes the lower opening of the internal space 112C of the rubber stem 110. The insulator 160 seals the accommodation space 140A to prevent water and gas from entering the inside of the accommodation space 140A. As a result, the insulator 160 can suppress corrosion of the first fixed contact 142 and the second fixed contact 144 provided in the accommodation space 140A.
  • a material having waterproof and gas-proof properties is used for the insulator 160.
  • a material having waterproof property and gas resistance against volcanic gas for example, Teflon (registered trademark) sheet, polyimide sheet, etc.
  • volcanic gas for example, Teflon (registered trademark) sheet, polyimide sheet, etc.
  • the insulator 160 is adhered to the upper surface of the case 140 by any adhesive means (for example, double-sided tape or the like).
  • the insulator 160 may be peeled off from the upper surface of the case 140 due to thermal expansion of the air in the accommodation space 140A. Therefore, the push switch 100 of the present embodiment adopts a configuration in which the insulator 160 is pressed from above by the base portion 116 of the rubber stem 110.
  • the push switch 100 of the present embodiment can increase the adhesive strength of the insulator 160 to the upper surface of the case 140, and thus can suppress the peeling of the insulator 160 at the time of mounting the push switch 100.
  • the metal contact 130 is an example of a "movable contact member".
  • the metal contact 130 is provided below the insulator 160 so as to overlap the insulator 160.
  • the metal contact 130 is a dome-shaped member formed of a metal plate.
  • the metal contact 130 comes into contact with the second fixed contact 144 provided at the bottom of the accommodation space 140A at the back side portion of the top thereof, and is electrically connected to the second fixed contact 144. Since the metal contact 130 has a spring property, when it is released from the pressing force from the protruding portion 113, it returns to the original convex shape by the repulsive force.
  • the metal contact 130 has a laminated structure in which two metal plates 132 and 134 having the same shape are laminated. As a result, the operating load of the metal contact 130 is adjusted so that a suitable click operation feeling can be obtained.
  • the case 140 is a container-shaped member having a rectangular parallelepiped shape.
  • the case 140 is formed with a storage space 140A having an open upper portion.
  • the metal contact 130 is accommodated in the accommodation space 140A.
  • the case 140 is formed by insert molding using a relatively hard insulating material (for example, hard resin or the like).
  • a claw portion 146 projecting outward is formed on the side surface of the case 140 parallel to the Y-axis.
  • a pair of first fixed contacts 142 and a second fixed contact 144 are provided.
  • the pair of first fixed contacts 142 are arranged at the bottom of the accommodation space 140A so as to face each other with the second fixed contacts 144 in between.
  • Each of the pair of first fixed contacts 142 comes into contact with the peripheral edge of the metal contact 130 and is electrically connected to the metal contact 130 by arranging the metal contact 130 in the accommodation space 140A.
  • the second fixed contact 144 is arranged in the center of the bottom of the accommodation space 140A.
  • the second fixed contact 144 is electrically connected to the metal contact 130 by coming into contact with the central portion (that is, the portion behind the top) of the metal contact 130 when the top of the metal contact 130 is deformed in a concave shape. It conducts with each of the pair of first fixed contacts 142 via the metal contact 130.
  • the first fixed contact 142 and the second fixed contact 144 are formed by processing a metal plate.
  • FIG. 4 is a perspective view showing the upper surface side of the rubber stem 110 according to the embodiment. As shown in FIG. 4, in the rubber stem 110, an annular rib 117 surrounding the operation portion 112 is provided on the upper surface of the base portion 116.
  • the rib 117 is an example of an "elastic convex portion".
  • the rib 117 has a convex cross-sectional shape protruding upward.
  • the diameter of the rib 117 is larger than the outer diameter of the peripheral wall portion 112B. Therefore, on the upper surface of the base portion 116, an annular region 116A is formed between the peripheral wall portion 112B and the rib 117.
  • the rubber stem 110 on the upper surface of the base portion 116, there are four regions 116A on the same circumference, which are inside the outer peripheral portion (that is, the region outside the rib 117) pressed against the upper surface of the case 140.
  • Through holes 118 are formed at 90 ° intervals (that is, evenly spaced).
  • the through hole 118 has a circular opening shape and penetrates the base portion 116 in the vertical direction.
  • FIG. 5 is a cross-sectional view showing the operation of the push switch 100 according to the embodiment.
  • FIG. 5 shows a push switch 100 in a state where a pressing operation is performed on the rubber stem 110. Note that FIG. 5 shows a cross section of the push switch 100 according to a cross section along the diagonal line of the push switch 100.
  • the lower opening of the internal space 112C of the rubber stem 110 is closed by the insulator 160 by providing the insulator 160. Therefore, in the push switch 100 of the present embodiment, if the rubber stem 110 is not provided with the through hole 118, the air in the internal space 112C is compressed when the rubber stem 110 is pressed. The operating load of the rubber stem 110 may increase, or air may leak from the gap between the rubber stem 110 and the insulator 160.
  • the push switch 100 of the present embodiment is provided with the through hole 118 in the rubber stem 110, so that when the rubber stem 110 is pressed, as shown by the arrow A in FIG. 5, the inside space 112C is formed. The air can be released to the outside through the through hole 118.
  • the push switch 100 of the present embodiment can suppress the occurrence of problems such as an increase in the operating load of the rubber stem 110 and air leaking from the gap between the rubber stem 110 and the insulator 160. it can.
  • the push switch 100 of the present embodiment has a base portion 116 of the rubber stem 110 in a region 116A inside the outer peripheral portion (that is, a region outside the rib 117) pressed against the upper surface of the case 140. Since the through holes 118 are formed in the vertical direction, the air in the internal space 112C can be released to the outside without affecting the pressing force of the base portion 116 on the upper surface of the case 140.
  • FIG. 6 is a diagram showing a state change of the push switch 100 according to the embodiment at the time of reflow.
  • FIG. 6A shows the push switch 100 before the state change due to the reflow.
  • FIG. 6B shows the push switch 100 after the state change due to the reflow.
  • the hook 105B provided on the frame 105 is engaged with the claw portion 146 provided on the side surface of the case 140, so that the frame 105 is placed between the upper surface of the case 140 and the rubber.
  • the frame 105 can be fixed to the case 140 while sandwiching the base portion 116 of the stem 110.
  • the rubber stem 110 thermally expands and the resin of the case 140 softens due to heat.
  • the frame 105 is pushed up by the rubber stem, the hook 105B is inserted into the claw portion 146, and the height position of the frame 105 may be raised.
  • elastically deformable ribs 117 are provided on the upper surface of the base portion 116 so that a gap is not created between the rubber stem 110 and the upper surface of the case 140 due to the rise of the frame 105. It is provided in the pressing portion pressed by the frame 105.
  • the rib 117 is provided on the lower surface of the base portion 116, if the rib 117 extends in the vertical direction as the frame 105 rises, the height position of the base portion 116 becomes higher, so that the rubber stem 110 The overall height position will also be high.
  • the push switch 100 of the present embodiment since the rib 117 is provided on the upper surface of the base portion 116, as shown in FIG. 6B, when the rib 117 extends in the vertical direction as the frame 105 rises. Even so, since the height position of the base portion 116 does not rise, the height position of the entire rubber stem 110 does not rise. As a result, the push switch 100 of the present embodiment can suppress the influence on the operability of the rubber stem 110.
  • FIG. 7 is a diagram showing a first modification of the rubber stem 110 according to the embodiment.
  • FIG. 7A is an external perspective view of the rubber stem 110 according to the first modification.
  • FIG. 7B is a plan view of the rubber stem 110 according to the first modification.
  • a plurality of arc-shaped ribs 117 are intermittently arranged side by side on the upper surface of the base portion 116 along the circumference surrounding the operation portion 112.
  • the rubber stem 110 of the first modification can suppress the reaction force when pressed from above by the frame 105. Further, the rubber stem 110 of the first modification allows the thermal expansion of the rubber stem 110 at the time of reflow to escape to the intermittent portion of the rib 117.
  • FIG. 8 is a diagram showing a second modification of the rubber stem 110 according to the embodiment.
  • FIG. 8A is an external perspective view of the rubber stem 110 according to the second modification.
  • FIG. 8B is a plan view of the rubber stem 110 according to the second modification.
  • each of the four ribs 117 is provided in the vicinity of each of the four sides of the substantially rectangular base portion 116.
  • the rubber stem 110 of the second modification is partially provided with ribs 117 in the vicinity of each of the four sides of the base portion 116, where the contact area with the upper surface of the case 140 tends to be small.
  • the airtightness can be improved.
  • FIG. 9 is a diagram showing a third modification of the rubber stem 110 according to the embodiment.
  • FIG. 9A is an external perspective view of the rubber stem 110 according to the third modification.
  • FIG. 9B is a plan view of the rubber stem 110 according to the third modification.
  • the rubber stem 110 of the third modification shown in FIG. 9 is provided with dome-shaped ribs 117 on the upper surface of the base portion 116 in the vicinity of each of the four corner portions of the base portion 116 having a substantially rectangular shape. ..
  • the rubber stem 110 of the second modification can suppress the reaction force when pressed from above by the frame 105. Since the ribs 117 are provided in the vicinity of each of the four corner portions having relatively high rigidity in the frame 105, the deformation of the frame 105 due to the reaction force from the rubber stem 110 can be suppressed.
  • the push switch 100 has a case 140 having an accommodation space 140A having an upper opening, a second fixed contact 144 provided at the bottom of the accommodation space 140A, and an accommodation space.
  • the metal contact 130 arranged in the 140A, the operation unit 112 provided in the upper part of the case 140, the internal space 112C provided inside the operation unit 112, and the lower end portion of the operation unit 112 are expanded outward.
  • the frame 105 that fixes the rubber stem 110 to the case 140 is sandwiched between the rubber stem 110 and the case 140, and the upper opening of the accommodation space 140A is closed.
  • the rubber stem 110 is provided with a sheet-shaped insulator 160 that seals the accommodation space 140A and closes the lower opening of the internal space 112C, and the rubber stem 110 is an outer peripheral portion that is pressed against the case 140 in the base portion 116.
  • a through hole 118 leading to the internal space 112C is provided in the inner region 116A.
  • the push switch 100 according to the embodiment can seal the accommodation space 140A by providing the insulator 160, so that water and gas can be prevented from entering the inside of the accommodation space 140A. Can be done. Therefore, the push switch 100 according to the embodiment can suppress corrosion of the first fixed contact 142 and the second fixed contact 144 provided in the accommodation space 140A.
  • the push switch 100 according to the embodiment is provided with the through hole 118 in the rubber stem 110, so that when the rubber stem 110 is pressed, the air in the internal space 112C is passed through the through hole 118. Can be escaped to the outside. Therefore, the push switch 100 according to the embodiment suppresses the occurrence of problems such as an increase in the operating load of the rubber stem 110 and air leaking from the gap between the rubber stem 110 and the insulator 160. Can be done.
  • the push switch 100 according to the embodiment it is possible to suppress the trouble during the pressing operation due to the sealing structure while sealing the accommodation space of the case.

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  • Push-Button Switches (AREA)
PCT/JP2020/011612 2019-08-13 2020-03-17 プッシュスイッチ WO2021029102A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2021539814A JP7232919B2 (ja) 2019-08-13 2020-03-17 プッシュスイッチ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-148625 2019-08-13
JP2019148625 2019-08-13

Publications (1)

Publication Number Publication Date
WO2021029102A1 true WO2021029102A1 (ja) 2021-02-18

Family

ID=74570558

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/011612 WO2021029102A1 (ja) 2019-08-13 2020-03-17 プッシュスイッチ

Country Status (2)

Country Link
JP (1) JP7232919B2 (enrdf_load_stackoverflow)
WO (1) WO2021029102A1 (enrdf_load_stackoverflow)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007324090A (ja) * 2006-06-05 2007-12-13 Smk Corp 押釦スイッチ及びその実装方法
WO2017047705A1 (ja) * 2015-09-16 2017-03-23 シチズン電子株式会社 スイッチと、スイッチの製造方法と、スイッチを含む電子機器

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0635304Y2 (ja) * 1988-03-29 1994-09-14 株式会社シチズン電子 照光式スイッチ
JP6854585B2 (ja) * 2015-10-20 2021-04-07 シチズン電子株式会社 プッシュスイッチ

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007324090A (ja) * 2006-06-05 2007-12-13 Smk Corp 押釦スイッチ及びその実装方法
WO2017047705A1 (ja) * 2015-09-16 2017-03-23 シチズン電子株式会社 スイッチと、スイッチの製造方法と、スイッチを含む電子機器

Also Published As

Publication number Publication date
JP7232919B2 (ja) 2023-03-03
JPWO2021029102A1 (enrdf_load_stackoverflow) 2021-02-18

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