JP2000323295A - Static electricity measure structure for electronic apparatus - Google Patents

Static electricity measure structure for electronic apparatus

Info

Publication number
JP2000323295A
JP2000323295A JP13413899A JP13413899A JP2000323295A JP 2000323295 A JP2000323295 A JP 2000323295A JP 13413899 A JP13413899 A JP 13413899A JP 13413899 A JP13413899 A JP 13413899A JP 2000323295 A JP2000323295 A JP 2000323295A
Authority
JP
Japan
Prior art keywords
static electricity
conductive
case
key top
operation member
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.)
Pending
Application number
JP13413899A
Other languages
Japanese (ja)
Inventor
Shinji Suzuki
真治 鈴木
Kentaro Tokiwa
健太郎 常盤
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film 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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP13413899A priority Critical patent/JP2000323295A/en
Publication of JP2000323295A publication Critical patent/JP2000323295A/en
Pending legal-status Critical Current

Links

Landscapes

  • Elimination Of Static Electricity (AREA)
  • Push-Button Switches (AREA)

Abstract

PROBLEM TO BE SOLVED: To protect internal electronic circuits by releasing static electricity generated in an operating member arranged in an external case of a conductive member having its surface treated by non-conductive surface treatment and, at least, having conductivity in its surface, through a conduction face exposed in a part of the external case adjacent thereto. SOLUTION: The surface of an external case 10 comprising a conductive member of aluminum or its alloy, etc., and the inside of a through hole for passing a key top 22 of an operation element of an operating switch 20 are surface treated so that a nonconductive oxide film 10A is formed thereon. Then, the oxide film 10A in the bottom end of the through hole 12 is removed by a mechanical machining or the like so as to expose a conduction face 14. A flange part 22A of the key top 22 integrally formed of an energizing elastic piece, resin, etc., and plated with metal for improving the external appearance and the quality is contacted with the rear face of the metal case 10. The static electricity generated in the vertically moving key top 22 is released to the metal case 10 via the conduction face 14 before discharging it to a contact part 24 of the circuit board 30.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は電子機器の静電対策
構造に係り、特に外装ケースがアルミニウムなどの導電
性部材によって形成されたカメラ等の電子機器の静電対
策構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for preventing static electricity in an electronic device, and more particularly to a structure for preventing static electricity in an electronic device such as a camera having an outer case formed of a conductive member such as aluminum.

【０００２】[0002]

【従来の技術】昨今、カメラ等の電子機器の操作ボタン
やダイヤルは、外観や品質向上のために金属メッキや金
属蒸着処理が施されることが多くなってきている。しか
し、前述のような外観処理が施された操作ボタン等には
静電気が蓄えられ、特にカメラの操作系は、カメラ内部
の電子部品の近傍に位置していることが多いため、静電
気が電子機器に放電し、しばしば静電破壊の原因となっ
ていた。2. Description of the Related Art In recent years, operation buttons and dials of electronic devices such as cameras are often subjected to metal plating or metal vapor deposition to improve appearance and quality. However, static electricity is stored in the operation buttons and the like that have been subjected to the appearance processing as described above. Particularly, since the operation system of the camera is often located near the electronic components inside the camera, the static electricity is stored in the electronic device. Discharge, often causing electrostatic breakdown.

【０００３】これに対し、従来、貫通孔が形成された導
電性の外装ケースに絶縁部材を介して導電性の可動接点
部材を配設し、この可動接点部材の下端に導電性の抜け
止めリングを設け、一方、可動接点部材に対向する位置
に固定接点を設けてなるスイッチ装置が提案されている
（特開平５−５４７４９号公報）。このスイッチ装置
は、通常は抜け止めリングが外装ケースに近接している
ため、可動接点部材に生じた静電気を抜け止めリングか
ら外装ケースに逃がし、これにより可動接点部材から固
定接点部材に静電気が放電しないようにしている。ま
た、可動接点部材の押下時には可動接点部材が固定接点
部材に当接して電気的に接続されるようになっている。On the other hand, conventionally, a conductive movable contact member is provided via an insulating member in a conductive outer case having a through hole formed therein, and a conductive stopper ring is provided at a lower end of the movable contact member. A switch device has been proposed in which a fixed contact is provided at a position facing a movable contact member (Japanese Patent Application Laid-Open No. 5-54749). In this switch device, since the retaining ring is normally located close to the outer case, static electricity generated in the movable contact member is released from the retaining ring to the outer case, thereby discharging static electricity from the movable contact member to the fixed contact member. I try not to. Also, when the movable contact member is pressed, the movable contact member comes into contact with the fixed contact member to be electrically connected.

【０００４】[0004]

【発明が解決しようとする課題】しかしながら、導電性
の外装ケース（例えば、アルミニウムの金属ケース）に
は表面処理が必要であり、その表面処理は通常、金属ケ
ースの表面に酸化皮膜を形成するようにしているため、
表面処理後の金属ケースは、そのほとんどが導通しなく
なる。However, a conductive outer case (for example, an aluminum metal case) requires a surface treatment, which usually involves forming an oxide film on the surface of the metal case. Because
Most of the metal case after the surface treatment stops conducting.

【０００５】従って、外装ケースに金属ケースを使用し
ても操作ボタン等に発生した静電気を金属ケースに逃が
すことができず、その結果、静電気が電子機器に放電し
て静電破壊の原因となっていた。本発明はこのような事
情に鑑みてなされたもので、操作部材に発生した静電気
を外装ケースに良好に逃がし、内部の電子回路を保護す
ることができる電子機器の静電対策構造を提供すること
を目的とする。Therefore, even if a metal case is used for the outer case, the static electricity generated in the operation buttons and the like cannot be released to the metal case. As a result, the static electricity is discharged to the electronic equipment and causes electrostatic breakdown. I was SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a static electricity countermeasure structure for an electronic device capable of properly discharging static electricity generated in an operation member to an outer case and protecting an internal electronic circuit. With the goal.

【０００６】[0006]

【課題を解決するための手段】上記目的を達成するため
に本願請求項１に係る電子機器の静電対策構造は、外装
ケースが導電性部材によって形成され、かつその表面に
非導通性の表面処理が施された外装ケースを有し、該外
装ケースに少なくとも表面が導電性を有する操作部材が
配設された電子機器において、前記操作部材の近傍の前
記外装ケースの一部に導通面を露出させ、前記操作部材
に発生した静電気を前記露出させた導通面から外装ケー
スに逃がすようにしたことを特徴としている。According to a first aspect of the present invention, there is provided a structure for preventing static electricity in an electronic device, wherein an outer case is formed of a conductive member, and a non-conductive surface is formed on the surface of the outer case. In an electronic apparatus having a treated outer case and an operating member having at least a surface having conductivity provided in the outer case, a conductive surface is exposed on a part of the outer case near the operating member. The static electricity generated in the operating member is released from the exposed conductive surface to the exterior case.

【０００７】即ち、外装ケースを構成する部材が導電性
部材であることを利用し、少なくとも表面が導電性を有
する操作部材（金属メッキや金属蒸着処理が施され、又
は導電部材からなる操作部材）に発生した静電気を外装
ケースに逃がすようにしている。その際、外装ケース
は、その表面に非導通性の表面処理が施されており、そ
のままでは静電気が流れないため、前記操作部材の近傍
の外装ケースの一部を削り取って導通面を露出させるよ
うにしている。[0007] That is, utilizing that the member constituting the outer case is a conductive member, an operating member having at least a surface conductive (an operating member which has been subjected to metal plating or metal vapor deposition processing or made of a conductive member) The static electricity generated is released to the outer case. At this time, the outer case is subjected to a non-conductive surface treatment on its surface, and static electricity does not flow as it is, so that a part of the outer case near the operation member is scraped to expose the conductive surface. I have to.

【０００８】本願請求項２に示すように前記操作部材と
前記露出させた導通面との縁面距離は、前記操作部材と
前記電子機器の内部の電子回路との縁面距離よりも短く
なるように前記外装ケースの一部に導通面を露出させる
ようにしたことを特徴としている。即ち、静電気は、縁
面距離が最も短い箇所に放電するため、前記露出させた
導通面までの縁面距離は、電子機器の内部の電子回路の
縁面距離よりも短くなるようにしている。As described in claim 2 of the present application, an edge distance between the operating member and the exposed conductive surface is shorter than an edge distance between the operating member and an electronic circuit inside the electronic device. A conductive surface is exposed on a part of the outer case. That is, since the static electricity is discharged to the portion where the edge surface distance is shortest, the edge surface distance to the exposed conductive surface is set to be shorter than the edge distance of the electronic circuit inside the electronic device.

【０００９】前記操作部材は、例えば本願請求項３に示
すように操作スイッチ又は操作ダイヤルの操作子であ
る。また、前記外装ケースの材質は、例えば本願請求項
４に示すようにアルミニウム又はアルミニウム合金から
なり、前記非導通性の表面処理は表面に酸化皮膜を形成
する表面処理である。The operation member is, for example, an operation switch or an operation dial of an operation dial. The outer case is made of, for example, aluminum or an aluminum alloy as described in claim 4 of the present application, and the non-conductive surface treatment is a surface treatment for forming an oxide film on the surface.

【００１０】[0010]

【発明の実施の形態】以下添付図面に従って本発明に係
る電子機器の静電対策構造の好ましい実施の形態につい
て詳説する。図１は本発明に係る電子機器の静電対策構
造の実施の形態を示す要部断面図である。同図におい
て、１０は電子機器の外装ケースであり、例えばアルミ
ニウムやアルミニウム合金などの導電性部材から形成さ
れた金属ケースである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a structure for preventing static electricity of an electronic device according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of a main part showing an embodiment of an antistatic structure of an electronic device according to the present invention. In FIG. 1, reference numeral 10 denotes an outer case of an electronic device, which is a metal case formed of a conductive member such as aluminum or an aluminum alloy.

【００１１】この金属ケース１０には、操作スイッチ２
０のキートップ２２が挿通される貫通孔１２等が形成さ
れ、その後、表面処理が施される。この表面処理は、金
属ケース１０の表面に酸化皮膜１０Ａを形成する処理で
あり、表面処理後の金属ケース１０は、酸化皮膜１０Ａ
（アルミニウムの場合にはアルマイト）によって導通し
なくなる。尚、前記貫通孔１２内にも酸化皮膜１０Ａが
形成されている。The metal case 10 includes an operation switch 2
The through holes 12 through which the zero key tops 22 are inserted are formed, and then a surface treatment is performed. This surface treatment is a treatment for forming an oxide film 10A on the surface of the metal case 10, and the metal case 10 after the surface treatment has an oxide film 10A.
(Alumite in the case of aluminum) stops conducting. The oxide film 10A is also formed in the through hole 12.

【００１２】続いて、前記金属ケース１０は、貫通孔１
２の下端部における酸化皮膜が機械加工等により削り取
られる。これにより、金属ケース１０は、キートップ２
２の近傍の一部に導通面１４が露出される。一方、操作
スイッチ２０は、主としてキートップ２２と、接点部２
４とからなり、キートップ２２は樹脂等によって弾性片
（図示せず）とともに一体成形されており、外観及び品
質向上のために金属メッキが施されている。このキート
ップ２２は、金属ケース１０の貫通孔１２に上下動自在
に配設され、図示しない弾性片によって図１上で上方向
に付勢され、通常は図１に示すようにキートップ２２の
フランジ部分２２Ａが金属ケース１０の裏面に当接して
いる。Subsequently, the metal case 10 is provided in the through hole 1.
The oxide film at the lower end of 2 is scraped off by machining or the like. As a result, the metal case 10 is
The conductive surface 14 is exposed at a part near the area 2. On the other hand, the operation switch 20 mainly includes the key top 22 and the contact portion 2.
The key top 22 is formed integrally with a resilient piece (not shown) of a resin or the like, and is metal-plated for improving appearance and quality. The key top 22 is vertically movably disposed in the through hole 12 of the metal case 10 and is urged upward in FIG. 1 by an elastic piece (not shown). The flange portion 22A is in contact with the back surface of the metal case 10.

【００１３】接点部２４は、固定接点２４Ａと可動接点
２４Ｂとからなり、電子機器内の回路基板３０上に搭載
されている。この可動接点２４Ｂは、通常、凸状に湾曲
しており、固定接点２４Ａと非接触状態となっている。
ここで、キートップ２２を押し下げ、キートップ２２の
押圧部２２Ｂによって可動接点２４Ｂを押圧すると、図
２に示すように可動接点２４Ｂは凹状に湾曲し、固定接
点２４Ａと電気的に接続される。これによりスイッチＯ
Ｎとなる。一方、キートップ２２から指を離し、キート
ップ２２が元の位置に復帰すると、可動接点２４Ｂもそ
の弾性力によって元の凸状に復帰し、可動接点２４Ｂは
固定接点２４Ａと非接触状態となる。The contact section 24 includes a fixed contact 24A and a movable contact 24B, and is mounted on a circuit board 30 in an electronic device. The movable contact 24B is normally curved in a convex shape, and is in a non-contact state with the fixed contact 24A.
Here, when the key top 22 is pressed down and the movable contact 24B is pressed by the pressing portion 22B of the key top 22, the movable contact 24B bends concavely as shown in FIG. 2 and is electrically connected to the fixed contact 24A. This allows the switch O
N. On the other hand, when the finger is released from the key top 22 and the key top 22 returns to the original position, the movable contact 24B also returns to the original convex shape by its elastic force, and the movable contact 24B is brought into a non-contact state with the fixed contact 24A. .

【００１４】尚、可動接点２４Ｂが凸状から凹状に変化
する時点でキートップ２２の操作力が変化するため、こ
れによりスイッチＯＮとなったことが確認できるように
なっている。さて、図１からも明らかなようにキートッ
プ２２と金属ケース１０の導通面１４との縁面距離は、
キートップ２２と接点部２４（可動接点２４Ｂ）との縁
面距離よりも短くなっている。従って、キートップ２２
に静電気が発生すると、その静電気は導通面１４を介し
て金属ケース１０に逃げ、接点部２４に放電することは
ない。Since the operation force of the key top 22 changes when the movable contact 24B changes from a convex shape to a concave shape, it is possible to confirm that the switch has been turned on. Now, as is clear from FIG. 1, the edge surface distance between the key top 22 and the conductive surface 14 of the metal case 10 is as follows.
It is shorter than the edge surface distance between the key top 22 and the contact portion 24 (movable contact 24B). Therefore, the key top 22
When the static electricity is generated, the static electricity escapes to the metal case 10 via the conductive surface 14 and does not discharge to the contact portion 24.

【００１５】即ち、金属ケース１０に導通面１４を形成
することにより、キートップ２２に発生した静電気が接
点部２４に放電する前に導通面１４を介して金属ケース
１０に逃がすことができ、接点部２４の電子回路の破壊
や誤動作を防止している。尚、この実施の形態では、操
作スイッチのキートップに発生する静電気を外装ケース
に逃がす場合について説明したが、操作部材は操作スイ
ッチのキートップに限らず、外装ケースに設けられる操
作部材であれば如何なるものでもよい。That is, by forming the conductive surface 14 on the metal case 10, static electricity generated on the key top 22 can be released to the metal case 10 via the conductive surface 14 before discharging to the contact portion 24. The electronic circuit of the section 24 is prevented from being broken or malfunctioning. In this embodiment, a case has been described in which static electricity generated at the key top of the operation switch is released to the outer case.However, the operation member is not limited to the key top of the operation switch, and any operation member provided on the outer case may be used. Anything is possible.

【００１６】[0016]

【発明の効果】以上説明したように本発明によれば、表
面に非導通性の表面処理が施された、導電性部材からな
る外装ケースの一部に導電面を露出させ、操作部材に発
生した静電気を導電面を介して外装ケースに逃がすよう
にしたため、操作部材に発生した静電気が外装ケース内
の電子回路等に放電することを未然に防止することがで
き、外装ケース内の電子回路の誤動作や静電破壊から保
護することができる。As described above, according to the present invention, a conductive surface is exposed on a part of an outer case made of a conductive member, the surface of which is subjected to a non-conductive surface treatment. The static electricity generated in the operation member is prevented from being discharged to the electronic circuit or the like in the outer case because the static electricity generated is released to the outer case through the conductive surface. It can protect against malfunction and electrostatic breakdown.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明に係る電子機器の静電対策構造の実施の
形態を示す要部断面図FIG. 1 is an essential part cross-sectional view showing an embodiment of an antistatic structure of an electronic device according to the present invention.

【図２】図１に示した操作スイッチの動作状態を示す図FIG. 2 is a diagram showing an operation state of an operation switch shown in FIG. 1;

【符号の説明】[Explanation of symbols]

１０…外装ケース（金属ケース）、１０Ａ…酸化皮膜、
１２…貫通孔、１４…導通面、２０…操作スイッチ、２
２…キートップ、２２Ａ…フランジ部分、２２Ｂ…押圧
部、２４…接点部、２４Ａ…固定接点、２４Ｂ…可動接
点、３０…回路基板10: exterior case (metal case), 10A: oxide film,
12 through-hole, 14 conductive surface, 20 operation switch, 2
2 Key top, 22A Flange part, 22B Pressing part, 24 Contact part, 24A Fixed contact, 24B Movable contact, 30 Circuit board

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】 外装ケースが導電性部材によって形成さ
れ、かつその表面に非導通性の表面処理が施された外装
ケースを有し、該外装ケースに少なくとも表面が導電性
を有する操作部材が配設された電子機器において、 前記操作部材の近傍の前記外装ケースの一部に導通面を
露出させ、前記操作部材に発生した静電気を前記露出さ
せた導通面から外装ケースに逃がすようにしたことを特
徴とする電子機器の静電対策構造。1. An exterior case comprising an exterior case formed of a conductive member and having a surface subjected to a non-conductive surface treatment, wherein an operation member having at least a surface having conductivity is disposed on the exterior case. In the installed electronic device, a conductive surface is exposed on a part of the exterior case near the operation member, and static electricity generated in the operation member is released from the exposed conduction surface to the exterior case. Characteristic anti-static structure of electronic equipment. 【請求項２】 前記操作部材と前記露出させた導通面と
の縁面距離が、前記操作部材と前記電子機器の内部の電
子回路との縁面距離よりも短くなるように前記外装ケー
スの一部に導通面を露出させるようにしたことを特徴と
する請求項１の電子機器の静電対策構造。2. The exterior case according to claim 1, wherein an edge distance between the operation member and the exposed conductive surface is shorter than an edge distance between the operation member and an electronic circuit inside the electronic device. The structure for preventing static electricity of an electronic device according to claim 1, wherein the conductive surface is exposed to the portion. 【請求項３】 前記操作部材は、操作スイッチ又は操作
ダイヤルの操作子である請求項１又は２の電子機器の静
電対策構造。3. The structure according to claim 1, wherein the operation member is an operation switch or an operation member of an operation dial. 【請求項４】 前記外装ケースはアルミニウム又はアル
ミニウム合金からなり、前記非導通性の表面処理は表面
に酸化皮膜を形成する表面処理である請求項１、２又は
３の電子機器の静電対策構造。4. The structure for preventing static electricity of an electronic device according to claim 1, wherein the outer case is made of aluminum or an aluminum alloy, and the non-conductive surface treatment is a surface treatment for forming an oxide film on the surface. .
JP13413899A 1999-05-14 1999-05-14 Static electricity measure structure for electronic apparatus Pending JP2000323295A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13413899A JP2000323295A (en) 1999-05-14 1999-05-14 Static electricity measure structure for electronic apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13413899A JP2000323295A (en) 1999-05-14 1999-05-14 Static electricity measure structure for electronic apparatus

Publications (1)

Publication Number Publication Date
JP2000323295A true JP2000323295A (en) 2000-11-24

Family

ID=15121370

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13413899A Pending JP2000323295A (en) 1999-05-14 1999-05-14 Static electricity measure structure for electronic apparatus

Country Status (1)

Country Link
JP (1) JP2000323295A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101136180B1 (en) * 2006-06-14 2012-04-17 엘지전자 주식회사 Component for preventing static electricity and manufacturing method the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101136180B1 (en) * 2006-06-14 2012-04-17 엘지전자 주식회사 Component for preventing static electricity and manufacturing method the same

Similar Documents

Publication Publication Date Title
US6804121B2 (en) Housing for biometric sensor chips and method for producing the housing
US7210946B2 (en) Electronic device with EMI shield
US6043989A (en) Static electricity removing structure for portable electronic devices
US20070040246A1 (en) Touch pad module with electrostatic discharge protection
KR20050105030A (en) Electrostatic discharging structure for mobile communication terminal
WO2003026372A1 (en) Portable electronic apparatus and bga package protective device
JP4624271B2 (en) Antistatic structure of pushbutton switch device in electronic equipment
JP2000323295A (en) Static electricity measure structure for electronic apparatus
KR100785819B1 (en) Switching means for memory card
MY128653A (en) Electronic component of a high frequency current suppression type and bonding wire for the same
US8063329B2 (en) Key mechanism for portable electronic device
JP3583855B2 (en) Electrostatic shield structure
JP2009026503A (en) Electronic equipment
JPS6097420A (en) Electronic business equipment
JP2004146203A (en) Antistatic structure of electronic apparatus
JPH098487A (en) Shielding structure
JP2591140B2 (en) Printed board
JP2006310035A (en) Switch sheet and portable terminal
JPH07288367A (en) Electrostatic-resistant electric structure of electronic device
JPH0877868A (en) Push-button switch structure
JP5252983B2 (en) Electronics
JP2004319106A (en) Antistatic structure of electronic apparatus
KR100989331B1 (en) Keypad having an electrostatic discharge structure for using an automated teller machine
JPS61292899A (en) Protective apparatus for semiconductor device
KR970003317A (en) Switch