EP2760036A1 - Wasserdichter und staubgeschützter schalter - Google Patents

Wasserdichter und staubgeschützter schalter Download PDF

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Publication number
EP2760036A1
EP2760036A1 EP20120833210 EP12833210A EP2760036A1 EP 2760036 A1 EP2760036 A1 EP 2760036A1 EP 20120833210 EP20120833210 EP 20120833210 EP 12833210 A EP12833210 A EP 12833210A EP 2760036 A1 EP2760036 A1 EP 2760036A1
Authority
EP
European Patent Office
Prior art keywords
switch
main body
waterproof
cover
case
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP20120833210
Other languages
English (en)
French (fr)
Other versions
EP2760036A4 (de
Inventor
Muneyoshi Miyata
Naoya Nakayama
Yasuhiro MINETA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mik Electronic Corp
Original Assignee
Mik Denshi Kohgyo Co Ltd
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 Mik Denshi Kohgyo Co Ltd filed Critical Mik Denshi Kohgyo Co Ltd
Publication of EP2760036A1 publication Critical patent/EP2760036A1/de
Publication of EP2760036A4 publication Critical patent/EP2760036A4/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/04—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
    • H01H13/04—Cases; Covers
    • H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings
    • H01H13/063—Casings hermetically closed by a diaphragm through which passes an actuating member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/04—Cases; Covers
    • H01H21/08—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • H01H2009/048—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings using a sealing boot, e.g. the casing having separate elastic body surrounding the operating member and hermetically closing the opening for it

Definitions

  • the present invention relates to a waterproof and dust protected switch used as a power supply switch in electronic devices such as, for example, electronic book terminals, mobile phone devices, etc., capable of preventing the intrusion of water drops, dust, etc. particularly into a switch mechanism unit or the inside of electronic devices.
  • a waterproof switch applied by the present applicant in the past is known as a switch comprising characteristics such as those described above (refer to following Patent Document 1).
  • the switch main body part is accommodated within a switch case with a two-layer structure comprising a waterproof cover and a case body, molded with two colors on the outer surface thereof.
  • part of the waterproof cover is projected from the outer surface of the case body in a dome shape, with a knob of the switch main body part arranged inside the dome. Therefore, because the knob of the switch main body is completely covered by the dome which is a part of the waterproof cover, this waterproof switch is capable of preventing water from entering the switch case from the periphery of the knob.
  • Patent Document 1 Japanese Unexamined Patent Application Publication 2005-209527
  • the present invention is designed to solve such problems with the purpose of providing a waterproof and dust protected switch capable of preventing the intrusion of water drops or dust, etc. into the switch case without fail and maintaining stable switch operations for a long period of time by enhancing durability.
  • the waterproof and dust protected switch in the present invention is provided with a switch mechanism unit that switches contacts by the operation of outside force along with a switch case that protects said switch mechanism unit.
  • Said switch case is constituted of a case main body formed from a hard material that accommodates said switch mechanism unit and a cover that covers said case main body and is formed from a soft material.
  • Said case main body and said cover are integrated by two-color molding, and a reinforcing rib is also provided integrally with said case main body or separately on the part where outside force operates on said cover.
  • said switch case in the waterproof and dust protected switch in the present invention, it is possible for said switch case to adopt a configuration in which a plate spring is formed by the top plate of said case main body and said reinforcing rib inclining with respect to the top plate.
  • said reinforcing rib is preferably arranged at a position to press the operation body of said switch mechanism unit.
  • said switch case such that said case main body is formed from polyamide resin and said cover is formed from silicon rubber.
  • a configuration of a lever switch that switches contacts by an inclining movement of the lever may also be adopted for said switch mechanism unit.
  • the switch is configured such that the case main body and the cover are integrated by two-color molding and the cover is tightly attached to the case main body so as to completely close the switch mechanism unit, providing an effect of preventing the intrusion of water drops or dust from outside so as to protect the switch mechanism unit without fail.
  • a reinforcing rib is provided integrally or separately with respect to the case main body at the location in which outside force acts on the cover, further providing an effect such that the shape retention characteristics may favourably be maintained without causing wear and tear, etc. on the cover as a result of repetitive use and smooth and stable operations may be realized for a long period of time with excellent durability.
  • waterproof and dust protected switch SW in the present embodiment is a small size switch that can be used as a power supply switch for electronic devices such as, for example, electronic book terminals, mobile phones, etc.
  • This switch is characterized in that a waterproof and dust protected structure is adopted for switch case 2 in order to prevent the intrusion of water drops, dust, etc. into internal switch mechanism unit 1 or an electronic device main body at the time of usage.
  • the power supply switch that is shown as an example is merely one example and the present invention is applicable in other switches used for environments in which waterproof properties or dust protective properties are required.
  • waterproof and dust protected switch SW comprises switch mechanism unit 1 and switch case 2.
  • Switch mechanism unit 1 switches contacts by operating an outside force (for example, by pressing with a finger) and a lever switch that switches contacts via an inclining operation of lever 5 which makes up an operation body is adopted in the present embodiment.
  • Switch case 2 protects switch mechanism unit 1 and is structured so as to completely encapsulate the internal switch mechanism unit 1 by a double structure comprising case main body 7 and cover 9 in the present embodiment.
  • Fig. 3 depicts base 3 constituting switch mechanism unit 1.
  • Base 3 is molded from a resin material that has insulating properties (polyamide resin in the present embodiment), while space 31 for internally accommodating parts in a flat box-shaped main body is provided mounted on a substrate.
  • Concave part 32 for installing lever 5 to be described later is formed on the front and back surfaces of the main body, while seat 33, which is one step higher, is formed on the inner bottom surface of the main body.
  • locking pawls 34 for attaching switch case 2 to be described later are provided on the external wall surface of the main body.
  • Fig. 4 depicts a contact pattern 4 constituting switch mechanism unit 1.
  • Contact pattern 4 is formed by punching out a metal sheet (phosphor bronze plate in the present embodiment) having conductive properties and comprises two rows of fixed contacts 41, 42 arranged in the center thereof with a predetermined interval in between. Furthermore, each of fixed contacts 41, 42 is provided with four connection terminals 43, 43, bent like a stair so as to be one step lower.
  • Fig. 5 depicts lever 5 that constitutes switch mechanism unit 1.
  • Lever 5 is molded from resin material (polyamide resin in this embodiment) that has insulating properties and comprises operation part 51 to receive an outside force, holder part 52 for holding contact spring piece 6, and cam part 53 for transmitting the outside force to contact spring piece 6.
  • contact spring piece 6 is fit into holder part 52 such that it is fixed while being in an energy accumulated state.
  • contact spring piece 6 a metal piece is bent into a U-shape providing resilient power and the end part thereof is divided into two to form a pair of leg parts, with the tip ends thereof becoming independent movable contacts 61, 62, respectively.
  • shaft part 54 provided on the outer wall surface into concave part 33 of base 3
  • lever 5 onto which this contact spring piece 6 has been fixed, is rotatably supported by shaft part 54 which is a fulcrum point.
  • Switch case 2 has a double structure consisting of case main body 7 that is molded in the primary molding as depicted in Fig. 6 and cover 9 that is molded in the secondary molding as depicted in Fig. 7 .
  • case main body 7 is formed from a hard material that has insulating properties (polyamide resin in the present embodiment) and is molded into a flat box shape as depicted in the figure by heating, melting, and injection molding the hard material.
  • This case main body 7 is for protecting switch mechanism part 1 by covering base 3, for which space 71 for accommodating lever 5 inside the main body is provided and opening part 73 for inserting lever 5 therein is formed in top plate 72 on the upper surface of the main body.
  • Attaching piece 74 for securing purposes is provided on base 3 on the front and back surfaces of the main body, while locking hole 75 to be fitted with locking pawl 34 of base 3 is formed in attaching piece 74.
  • reinforcing rib 8 made from the same hard material as case main body 7 is provided as frame of cover 9.
  • reinforcing rib 8 is arranged in an inclining state with respect to top plate 72 of case main body 7, while reinforcing rib 8 and top plate 72 constitute plate spring part 81 that has resilient force.
  • two rows of projection parts 82, 82 molded in the same mountain shape as lever 5 are provided at one end of reinforcing rib 8.
  • round hole 83 for securing a contact area with cover 9 is provided at the other end of reinforcing rib 8 as depicted in Fig.
  • reinforcing rib 8 is provided as a separate body from case main body 7 in the present embodiment; however, alternatively, reinforcing rib 8 may also be provided integrally by connecting to top plate 72 of case main body 7.
  • cover 9 is made from a soft material (silicon rubber in the present embodiment) that has insulating properties such as elastomar resin, etc. and is molded into a dome shape with cavity 91 inside thereof as illustrated, by heating, melting and injection molding the soft material.
  • a die is opened after molding case main body 7 and only the top mold is replaced with a top mold for cover molding (reinforcing rib 8 has been set within the mold) subsequently followed by clamping the mold. Thereafter, liquid silicon rubber is injected into the die and finally cooled to harden.
  • switch case 2 is molded with case main body 7 and cover 9 integrated.
  • two-color molded switch case 2 is mounted on base 3 where lever 5 has been installed.
  • Switch case 2 covers over base 3, and base 3 as well as switch case 2 are secured by hooking locking pawl 34 of base 3 into locking hole 75 of case main body 7 as in the drawing.
  • cover 9 covering over case main body 7 is integrated by two-color molding, cover 9 is closely attached to case main body 7 and said switch case 2 is capable of completely blocking the intrusion of water drops or dust from outside. Furthermore, regarding the locations at which an outside force acts, reinforcing rib 8 made from a hard material is bonded to cover 9 that is made from a soft material, significantly enhancing the performance of shape retention characteristics, durability, operating stability, etc. of cover 9. Furthermore, as in Fig. 7 (c) , silicon rubber composing cover 9 is inserted into round hole 83 of reinforcing rib 8 and, as in Fig.
  • projection part 92 formed from silicon rubber that constitutes cover 9 is also inserted between two rows of projection parts 82 and 82 at the tip end of the reinforcing rib so as to be bonded.
  • the contact area of case main body 7 and cover 9 is largely ensured, further enhancing the bonding properties of both.
  • cover 9 may also be favourably maintained without generating wear and tear after repetitive use by bonding and integrating reinforcing rib 8 that is made from a hard material and cover 9 that is made from silicon rubber. Furthermore, projection part 92, upon which an outside force acts, is protected by being sandwiched by thick projection part 82 made from a hard material, providing excellent durability. It should be noted that cover 9 made from silicon rubber is provided with a stair-like step 93 which acts as a trigger point of the cavity when pressed with a finger and is easily deformed while giving strength thereto, allowing smooth and stable operations to be realized for a long period of time.
  • case main body 7 and reinforcing rib 8 constituting switch case 2 are separate bodies; however, alternatively, case main body 7 and reinforcing rib 8 may also be provided as one body.
  • switch case 2 is configured as a double structure consisting of case main body 7 that is molded in the primary molding depicted in Fig. 11 and cover 9 that is molded in the secondary molding depicted in Fig. 12 .
  • reinforcing rib 8 is connected to top plate 72 of case main body 7 that is made of a hard material (polyamide resin in the present embodiment) and the connected portion thereof constitutes plate spring part 81 that has resilient force.
  • dome-shaped cover 9 comprising cavity part 91 therein is molded by heating, melting, and injection molding a soft material such as elastomer resin, etc. (silicon rubber in the present embodiment).
  • switch case 2 with integrated case main body 7 and cover 9 is configured by two-color molding of a hard material (polyamide resin) and a soft material (silicon rubber).
  • cover 9 is closely attached to case main body 7 that constitutes switch case 2, enabling the protection of switch mechanism unit 1 without fail by completely blocking the intrusion of water drops or dust, etc. from outside. Furthermore, particularly in the present embodiment, because case main body 7 and reinforcing rib 8 are connected and the connected portion constitutes plate spring 81, the compressing and resilient returning operations of plate spring 81 are conducted smoothly, making it possible to realize favourably responsive and stable switch operations as an advantageous point.
  • switch mechanism unit 1 constituting waterproof and dust protected switch SW
  • switches in other structures such as a push switch or a sliding switch, etc. may also be adopted without being limited to this.
  • case main body 7 and cover 9 constituting switch case 2 the shape and the material are not necessarily limited to the above embodiment, with appropriate modifications possible within the normal creative capability of those in the industry within the scope of of the present invention.

Landscapes

  • Push-Button Switches (AREA)
  • Switches With Compound Operations (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
EP12833210.3A 2011-09-21 2012-05-17 Wasserdichter und staubgeschützter schalter Withdrawn EP2760036A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011205828 2011-09-21
PCT/JP2012/062586 WO2013042403A1 (ja) 2011-09-21 2012-05-17 防水防塵スイッチ

Publications (2)

Publication Number Publication Date
EP2760036A1 true EP2760036A1 (de) 2014-07-30
EP2760036A4 EP2760036A4 (de) 2015-06-24

Family

ID=47914184

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12833210.3A Withdrawn EP2760036A4 (de) 2011-09-21 2012-05-17 Wasserdichter und staubgeschützter schalter

Country Status (5)

Country Link
EP (1) EP2760036A4 (de)
JP (1) JP6045114B2 (de)
KR (1) KR101827510B1 (de)
CN (1) CN103828004B (de)
WO (1) WO2013042403A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109962042A (zh) * 2019-04-16 2019-07-02 常州信息职业技术学院 集成电路封装结构

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2531377B (en) * 2015-05-14 2017-02-01 Wheely-Safe Ltd Wheel loosening sensor
JP6806298B2 (ja) * 2016-05-16 2021-01-06 モトローラ ソリューションズ インコーポレイテッドＭｏｔｏｒｏｌａ Ｓｏｌｕｔｉｏｎｓ， Ｉｎｃ． ポータブル通信デバイスのためのプッシュツートークアセンブリ
KR101925845B1 (ko) * 2018-05-23 2018-12-06 (주)유프랜드 안전벨트 버클
CN111785555A (zh) * 2020-07-29 2020-10-16 中国科学院沈阳自动化研究所 一种用于全海深的水下按压式开关装置

Family Cites Families (15)

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JPS4715412Y1 (de) * 1968-04-01 1972-05-31
JPS5042372Y1 (de) * 1970-12-11 1975-12-02
JPS56100828U (de) * 1979-12-29 1981-08-08
JPS6427928U (de) * 1987-08-12 1989-02-17
US5063277A (en) * 1989-06-28 1991-11-05 Daiichi Denso Buhin Co., Ltd. Waterproof and dustproof push switch
JPH0478725U (de) * 1990-11-20 1992-07-09
JPH0499643U (de) * 1991-01-24 1992-08-28
JPH0715412Y2 (ja) * 1991-07-12 1995-04-12 康彦 西村 釣り針
US5380968A (en) * 1993-09-29 1995-01-10 A.P.M. Hexseal Corporation Protective cover for switches
JPH091678A (ja) * 1995-06-15 1997-01-07 Shin Etsu Polymer Co Ltd 押釦スイッチ装置用ハウジングおよび押釦スイッチ装置
JP2001057127A (ja) * 1999-08-20 2001-02-27 Nec Corp キースイッチ装置の防滴・防塵構造
JP4204372B2 (ja) * 2003-04-17 2009-01-07 株式会社東郷製作所 スイッチ用二次成形品
JP4273867B2 (ja) * 2003-08-05 2009-06-03 パナソニック株式会社 車両用スイッチ
JP2005209527A (ja) 2004-01-23 2005-08-04 Mic Electron Co 防水スイッチとその製造方法
JP4323363B2 (ja) * 2004-04-01 2009-09-02 アルプス電気株式会社 スイッチ装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109962042A (zh) * 2019-04-16 2019-07-02 常州信息职业技术学院 集成电路封装结构
CN109962042B (zh) * 2019-04-16 2020-07-17 常州信息职业技术学院 集成电路封装结构

Also Published As

Publication number Publication date
JP6045114B2 (ja) 2016-12-14
JPWO2013042403A1 (ja) 2015-03-26
EP2760036A4 (de) 2015-06-24
KR101827510B1 (ko) 2018-02-08
WO2013042403A1 (ja) 2013-03-28
KR20140064881A (ko) 2014-05-28
CN103828004B (zh) 2017-09-22
CN103828004A (zh) 2014-05-28

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