JP2003187668A - Push-button switch - Google Patents

Push-button switch

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Publication number
JP2003187668A
JP2003187668A JP2001383279A JP2001383279A JP2003187668A JP 2003187668 A JP2003187668 A JP 2003187668A JP 2001383279 A JP2001383279 A JP 2001383279A JP 2001383279 A JP2001383279 A JP 2001383279A JP 2003187668 A JP2003187668 A JP 2003187668A
Authority
JP
Japan
Prior art keywords
button switch
stem
housing
push button
movable contact
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
JP2001383279A
Other languages
Japanese (ja)
Inventor
Tomosato Saito
知里 斉藤
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.)
Alps Alpine Co Ltd
Original Assignee
Alps Electric 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 Alps Electric Co Ltd filed Critical Alps Electric Co Ltd
Priority to JP2001383279A priority Critical patent/JP2003187668A/en
Publication of JP2003187668A publication Critical patent/JP2003187668A/en
Pending legal-status Critical Current

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  • Push-Button Switches (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a push-button switch with which operators can make a switching operation securely with a handheld operating stick and downsizing can be realized. <P>SOLUTION: The push-button switch has a stem 9 equipped with a pressing projection 9c opposing the top of a movable contact 7 on one side and an operating section 10 on the other and a cover 12 exposing the operating section capable of operating from outside and holding the stem 9 free from coming off within a housing 2. On the operating section 10 of the stem, a guiding face 11b is formed for guiding a tip 60a of the operating stick 60 toward the direction of the press projection 9c. <P>COPYRIGHT: (C)2003,JPO

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、押釦スイッチに係
り、特にコンピュータや携帯情報端末などの電子機器の
リセットスイッチに好適な押釦スイッチの構造に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push button switch, and more particularly to a push button switch structure suitable for a reset switch of electronic equipment such as a computer and a personal digital assistant.

【0002】[0002]

【従来の技術】従来の押釦スイッチの構造としては、図
9に示すものがある。図9は押釦スイッチを電子機器に
実装した状態での操作説明図である。
2. Description of the Related Art A conventional push button switch structure is shown in FIG. FIG. 9 is an operation explanatory diagram when the push button switch is mounted on the electronic device.

【0003】従来の押釦スイッチ20は、箱状の収納部
を有するハウジング21内に固定接点21と可動接点2
2とステム23とが収容されてなり、ステム23の昇降
によって、可動接点22を固定接点21に対して押圧可
能に配置されている。そして、このステム23は、鍔部
23aと、上面が平坦状に形成されてこの鍔部よりも高
く突出形成されたつまみ部23bと、このつまみ部の下
面に突出する突起部23cとからなり、ハウジング21
の上面を覆うカバー24に形成した貫通孔24aを介し
て前記つまみ部23bの上面がカバー24の表面よりも
上方に突出するよう前記鍔部23aが抜け止め保持され
ている。また、前記可動接点22は金属板ばねを頂部が
ドーム状に膨出するようにプレス加工してなり、その一
部が図示せぬ共通固定接点と常時導通すると共に、前記
頂部の裏面22aが中央固定接点と対向するように配置
されている。そして、前記可能接点22の頂部が押圧さ
れることにより、座屈反転して可動接点22の裏面22
aと前記中央固定接点21とが接触して、図示せぬ共通
固定接点と前記中央固定接点21との間が非導通状態か
ら導通状態に変わって、スイッチの切替えが行われるも
のである。
The conventional push button switch 20 has a fixed contact 21 and a movable contact 2 in a housing 21 having a box-shaped housing.
2 and the stem 23 are accommodated, and the movable contact 22 is arranged to be able to be pressed against the fixed contact 21 when the stem 23 moves up and down. The stem 23 includes a collar portion 23a, a knob portion 23b having a flat upper surface and formed to project higher than the collar portion, and a protrusion portion 23c protruding to the lower surface of the knob portion. Housing 21
The flange portion 23a is retained and retained so that the upper surface of the knob portion 23b projects above the surface of the cover 24 through a through hole 24a formed in the cover 24 that covers the upper surface of the cover portion 24. The movable contact 22 is formed by pressing a metal leaf spring so that the top portion bulges into a dome shape. A part of the movable contact is always connected to a common fixed contact (not shown), and the back surface 22a of the top portion is in the center. It is arranged so as to face the fixed contact. When the top of the movable contact 22 is pressed, the buckling is reversed and the back surface 22 of the movable contact 22 is reversed.
When a and the central fixed contact 21 are brought into contact with each other and a common fixed contact (not shown) and the central fixed contact 21 are changed from a non-conducting state to a conducting state, a switch is switched.

【0004】このように構成された従来の押釦スイッチ
20を電子機器等のリセットスイッチとして用いる場
合、筐体の化粧パネル51に設けた開口51aから、操
作者が手にしたペン等の棒状操作体60の先端60aを
挿入し、機器内部の押釦スイッチ20のステム23を押
圧操作するよう構成したものが知られている。
When the conventional push-button switch 20 having such a structure is used as a reset switch for an electronic device or the like, a stick-shaped operating body such as a pen held by an operator through an opening 51a provided in a decorative panel 51 of a housing. It is known that the tip 60a of 60 is inserted and the stem 23 of the push button switch 20 inside the device is pushed.

【0005】[0005]

【発明が解決しようとする課題】前述のように従来の押
釦スイッチ20を電子機器等のリセットスイッチとして
用いる場合、ペン先等でのリセット操作時に、操作者は
棒状操作体60の先端60aがつまみ部23bに当接した
か否かを棒状操作体60を介した指への感触を頼りに手
探りで操作しなければならない。一方、電子機器の小型
化に対応するため、実装面積のより小さな電子部品が求
められており、押釦スイッチにおいても、外形サイズの
小型化要求が益々高まっているが、これに伴い押釦スイ
ッチのステム23に設けたつまみ部23bの面積も小さ
くなってきている。そのため、押釦スイッチ20のつま
み部23bの中央を押しづらく、ステム23が傾いて押
し込まれてしまう所謂端押し状態を招いたり、棒状操作
体60の挿入角度によっては、つまみ部23bをペン先
等の先端60aが滑ってしまい、筐体の化粧パネル51
との間に挟み込んでしまったり、ステム23の破損に至
る可能性があるという問題があった。
As described above, when the conventional push button switch 20 is used as a reset switch for an electronic device or the like, the operator pushes the tip 60a of the rod-shaped operation body 60 when the reset operation is performed with a pen tip or the like. Whether or not the portion 23b is abutted must be operated by groping depending on the feel of the finger through the rod-shaped operating body 60. On the other hand, in order to respond to the miniaturization of electronic devices, electronic components with a smaller mounting area are required, and there is an increasing demand for miniaturization of the external size of pushbutton switches. The area of the knob portion 23b provided on 23 is also decreasing. Therefore, it is difficult to press the center of the knob portion 23b of the push button switch 20, which causes a so-called end pushing state in which the stem 23 is tilted and pushed, and depending on the insertion angle of the rod-shaped operating body 60, the knob portion 23b may be a pen tip or the like. The tip 60a slips, and the decorative panel 51 of the housing
There is a problem in that it may be caught between and, and the stem 23 may be damaged.

【0006】また、押釦スイッチの小型化のために可動
接点22の反転ばねとして、小径の反転ばねを用いよう
とすると、これに比例して反転ばねの頂部の押圧可能領
域も狭くなる。そのため前記のようなステム23の端押
しがあると、確実な座屈反転が行えず、正確なスイッチ
切替えができないため、反転ばねの小径化に限界があ
り、押釦スイッチ20全体の小型化の妨げになるという
問題があった。
If a small diameter reversing spring is used as the reversing spring of the movable contact 22 in order to reduce the size of the push button switch, the depressible area of the top of the reversing spring is narrowed in proportion to this. Therefore, if the end of the stem 23 is pushed as described above, the buckling inversion cannot be performed reliably and the switch cannot be changed accurately, so that there is a limit to the diameter reduction of the reversing spring, which hinders the downsizing of the entire push button switch 20. There was a problem of becoming.

【0007】従って、本発明では、上記した問題を解決
し、操作者が手により保持可能な棒状の操作体によるス
イッチ切替え操作を確実に行うことができ、小型化が可
能な押釦スイッチを提供することを目的とする。
Therefore, the present invention provides a push button switch which solves the above-mentioned problems and allows the operator to surely perform a switch changeover operation by a rod-shaped operation body which can be held by hand, and which can be miniaturized. The purpose is to

【0008】[0008]

【課題を解決するための手段】上記課題を解決するため
に本発明では第1の手段として、収容部を形成しその収
容部内に固定接点を突出させたハウジングと、一端が固
定接点に導通し他端がハウジング外部に導出された外部
接続端子と、前記収容部内に配置され、前記固定接点に
接離可能な反転ばねからなる可動接点と、前記収容部内
に移動自在に収容され、一面に前記可動接点の頂部に対
向する押圧突起を有し、他面に操作部を設けたステム
と、前記操作部を外部から操作可能に露出させてステム
を前記ハウジング内に抜け止め保持するカバーとを備
え、前記ステムの操作部に、棒状の操作体の先端を前記
押圧突起方向に案内する案内面を形成したことを特徴と
する。
In order to solve the above problems, the first means of the present invention is, as a first means, a housing in which a housing portion is formed and a fixed contact is projected into the housing portion, and one end is electrically connected to the fixed contact. The external connection terminal, the other end of which is led out of the housing, the movable contact, which is disposed in the accommodating portion and includes a reversing spring that can be brought into contact with and separated from the fixed contact, and movably accommodated in the accommodating portion, the one surface of which is described above. The movable contact includes a stem having a pressing projection facing the top of the movable contact and an operating portion provided on the other surface, and a cover that exposes the operating portion from the outside so as to prevent the stem from slipping out of the housing. A guide surface for guiding the tip of the rod-shaped operating body in the pressing protrusion direction is formed in the operating portion of the stem.

【0009】また、第2の手段として、前記案内面を底
部が開口部よりも幅狭となる凹部で形成すると共に、そ
の底部の中心と一致させて前記押圧突起を形成したこと
を特徴とする。
As a second means, the guide surface is formed as a recess whose bottom is narrower than the opening, and the pressing projection is formed so as to coincide with the center of the bottom. .

【0010】また、第3の手段として、前記操作部を前
記カバーの表面から突出しない高さに形成したことを特
徴とする。
As a third means, the operating portion is formed at a height that does not project from the surface of the cover.

【0011】また、第4の手段として、前記可動接点は
略円形の外周縁部を有し、中心に向けてドーム状に膨出
するようプレス成形された導電性の金属板ばねからなる
ことを特徴とする。
As a fourth means, the movable contact has a substantially circular outer peripheral edge portion, and is composed of a conductive metal leaf spring press-molded so as to bulge toward the center in a dome shape. Characterize.

【0012】[0012]

【発明の実施の形態】以下、本発明に係る押釦スイッチ
の実施の形態を図1乃至図8に示す。図1は本発明の一
実施例に係る押釦スイッチの平面図、図2は図1に示す
押釦スイッチの側面図、図3は本発明の一実施例に係る
押釦スイッチのハウジングの平面図、図4は本発明の一
実施例に係る押釦スイッチの可動接点の拡大断面図、図
5は本発明の一実施例に係る押釦スイッチのステムの平
面図、図6は図5に示すステムの正面図、図7は図5に
示すステムの右側面図、図8は押釦スイッチを電子機器
に実装した状態での操作説明図である。
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a push button switch according to the present invention will be described below with reference to FIGS. 1 is a plan view of a push button switch according to an embodiment of the present invention, FIG. 2 is a side view of the push button switch shown in FIG. 1, and FIG. 3 is a plan view of a housing of a push button switch according to an embodiment of the present invention. 4 is an enlarged sectional view of a movable contact of a push button switch according to an embodiment of the present invention, FIG. 5 is a plan view of a stem of the push button switch according to an embodiment of the present invention, and FIG. 6 is a front view of the stem shown in FIG. FIG. 7 is a right side view of the stem shown in FIG. 5, and FIG. 8 is an operation explanatory view in a state where a push button switch is mounted on an electronic device.

【0013】図1から図3において、押釦スイッチ1の
ハウジング2は合成樹脂などの絶縁材からなり、矩形状
の底板部2aの外周を環状に取り囲んで起立する側壁2
bによって上部が開放された箱状の収納部3が形成され
ている。そして、この側壁2bのうち長辺側に位置する
側壁には長方形状の位置決め突起4が突出形成されてお
り、更にこの位置決め突起4の両側には、図2における
紙面に直交する奥行き方向に段落ちとなったフック部4
b、4bが形成されている。そして、このハウジング2
の底板部2aには、前記収納部3に連続して略円形状の
凹部からなる内底面3aが形成されてなり、底板部2a
の内部には導電性の金属材からなる一対の端子材5、5
がインサート成形されている。前記一方の端子材5の一
端がハウジング2の底板部2a内で屈曲されて、上記内
底面3aに突出して中央固定接点6aが形成されてい
る。また、他方の端子材5の一端は、ハウジング2の底
板部2a内で二股に分岐し、各々が屈曲されて、上記内
底面3aに中央固定接点6aを挟んで突出して一対の周
辺固定接点6bが設けられている。
1 to 3, a housing 2 of a push button switch 1 is made of an insulating material such as synthetic resin, and a standing side wall 2 surrounds an outer periphery of a rectangular bottom plate 2a in an annular shape.
A box-shaped storage portion 3 having an open top is formed by b. A rectangular positioning protrusion 4 is formed on the side wall located on the long side of the side wall 2b, and the positioning protrusion 4 is formed on both sides of the side wall 2b in the depth direction orthogonal to the plane of FIG. Hook part 4
b, 4b are formed. And this housing 2
The bottom plate portion 2a is formed with an inner bottom surface 3a formed of a substantially circular recess which is continuous with the storage portion 3.
A pair of terminal materials 5, 5 made of a conductive metal material are provided inside the
Is insert molded. One end of the one terminal material 5 is bent in the bottom plate portion 2a of the housing 2 and protrudes to the inner bottom surface 3a to form a central fixed contact 6a. Further, one end of the other terminal material 5 is bifurcated in the bottom plate portion 2a of the housing 2, each of which is bent, and protrudes with the central fixed contact 6a sandwiched on the inner bottom surface 3a to form a pair of peripheral fixed contacts 6b. Is provided.

【0014】前記中央固定接点6aは、ハウジング2の
内底面3aの略中央に位置し、また、この内底面3aの
中央固定接点6aを挟んでハウジング2の対角線上に対
向する位置には、前記の周辺固定接点6bが突出形成さ
れており、内底面3aからの突出量が上記中央固定接点
6aに対して周辺固定接点6bが若干高くなるように形
成されている。そして、これらの中央固定接点6aおよ
び周辺固定接点6bに接続した端子材5の他端部は、各
々ハウジング外に導出されて、面実装が可能なようにハ
ウジング2の側壁2bに沿って曲げられ、半田付け部を
有する外部接続端子5aが形成されている。
The central fixed contact 6a is located substantially in the center of the inner bottom surface 3a of the housing 2, and the central fixed contact 6a of the inner bottom surface 3a is diagonally opposite to the central fixed contact 6a. The peripheral fixed contact 6b is formed so as to project so that the amount of projection from the inner bottom surface 3a is slightly higher than the central fixed contact 6a. Then, the other ends of the terminal members 5 connected to the central fixed contact 6a and the peripheral fixed contact 6b are led out of the housing and bent along the side wall 2b of the housing 2 so as to be surface-mounted. An external connection terminal 5a having a soldering portion is formed.

【0015】可動接点7は、図4に示すように導電性の
金属板ばねを略円盤状に打抜いてなり、その外周縁部7
aから中心部に向かって所定角度で立ち上がるスカート
部7bと、このスカート部7bに連続してドーム状に膨
出した頂部7cとが、プレス金型により精度良く一体形
成されている。そして、このように形成された可動接点
7は、前記ハウジング2の凹状の内底面3a内に収容さ
れて、その外周縁部7aが前記周辺固定接点6b上に一
致するように前記内底面3aの内壁で位置規制されて常
時導通可能に載置されると共に、その頂部7cの裏面7
dが前記中央固定接点6a上に離間して接離可能に対向
配置されている。尚、可動接点7は、スカート部7bを
設けずに、略円形の外周縁部7aから中心部に向かって
ドーム状に膨出するようプレス成形して、頂部7cを有
する反転ばねを構成するようにしても良い。更に、必ず
しも1枚である必要はなく、複数枚重ねて配置すること
により、作動力やクリック感触を調整するようにしても
良い。
As shown in FIG. 4, the movable contact 7 is formed by punching out a conductive metal leaf spring into a substantially disc shape, and the outer peripheral edge portion 7 thereof.
A skirt portion 7b that rises from a toward the center portion at a predetermined angle and a top portion 7c that bulges like a dome continuously from the skirt portion 7b are integrally formed with high precision by a press die. The movable contact 7 thus formed is housed in the concave inner bottom surface 3a of the housing 2, and the inner peripheral surface 3a of the inner bottom surface 3a is aligned so that the outer peripheral edge portion 7a thereof is aligned with the peripheral fixed contact 6b. The position is regulated by the inner wall and is placed so as to be able to be conducted at all times, and the back surface 7 of the top portion 7c thereof is provided.
d is disposed on the central fixed contact 6a so as to be spaced apart from and facing the central fixed contact 6a. The movable contact 7 is press-molded without forming the skirt portion 7b so as to bulge in a dome shape from the substantially circular outer peripheral edge portion 7a toward the center portion to form an inversion spring having a top portion 7c. You can Further, the number of sheets is not necessarily one, and a plurality of sheets may be arranged in an overlapping manner to adjust the operating force and the click feeling.

【0016】また、図8に示すようにハウジング2内に
収納された可動接点7は、その上面が絶縁性の可撓性シ
ート8によって覆われており、該可撓性シート8の周縁
が前記ハウジング2の底板部2aに接着剤等によって固
着されて、外部からの塵埃の侵入を防止している。尚、
この可撓性シート8は外部からの押圧によってシートを
介して可動接点7の頂部7cを押圧して反転させること
が可能なように、伸縮性の良いシート材によって形成さ
れている。
Further, as shown in FIG. 8, the movable contact 7 housed in the housing 2 has an upper surface covered with an insulating flexible sheet 8, and the peripheral edge of the flexible sheet 8 is the above-mentioned. It is fixed to the bottom plate portion 2a of the housing 2 with an adhesive or the like to prevent dust from entering from the outside. still,
The flexible sheet 8 is formed of a highly stretchable sheet material so that the top portion 7c of the movable contact 7 can be pressed and inverted through the sheet by pressing from the outside.

【0017】ステム9は、絶縁性の合成樹脂を射出成形
してなり、基部9aから左右に延びる平板状の鍔部9b
と、この鍔部9bの下面側に延びる略円柱状の押圧突起
9cとが略T字状に一体成形されている。また、基部9
aはその上面が前記鍔部9bの上面よりも一段高く突出
して平面視略円形状の操作部10が形成されている。
尚、この操作部10の上面の高さLは、ハウジング内に
収容された状態で後述するカバー12の表面から突出し
ない高さとなるように設定することが好ましい。
The stem 9 is made of an insulative synthetic resin by injection molding, and has a flat plate-shaped collar portion 9b extending from the base portion 9a to the left and right.
And a substantially columnar pressing protrusion 9c extending to the lower surface side of the collar portion 9b are integrally formed in a substantially T shape. Also, the base 9
The upper surface of a is projected higher than the upper surface of the collar portion 9b by one step to form an operation portion 10 having a substantially circular shape in plan view.
The height L of the upper surface of the operation portion 10 is preferably set so that it does not protrude from the surface of the cover 12 described below when it is accommodated in the housing.

【0018】また、この操作部10は外側を平坦面とし
てその内側に開口部11aが略同心円状となるように前
記押圧突起側9cに向けて円椀状となる窪み11が形成
されている。そして、この窪み11の内壁面によって、
操作者が保持する棒状の操作体の案内面11bが形成さ
れている。上記案内面11bは断面がU字状、またはす
り鉢状、V字状等で例示されるように、その底部から前
記開口部11a側に向かって拡開していくように形成し
て、その底部の中心位置C1と、前記押圧突起9cの中
心位置C2とが同軸上に整列させて形成する方が好まし
い。尚、操作部10は、前記のように窪み11の外側を
平坦面に形成することにより、棒状の操作体で操作する
リセットスイッチとして用いる他に、電子機器側の化粧
パネルに昇降自在に設けた操作ボタンによって外部操作
する押釦スイッチとして用いることもでき、両者の用途
に兼用することが可能となる。
The operating portion 10 has a flat surface on the outer side, and a recess 11 in the shape of a bowl is formed on the inner side of the operating portion 10 so as to be substantially concentric with the opening 11a toward the pressing protrusion 9c. And, by the inner wall surface of this depression 11,
A guide surface 11b of a rod-shaped operating body held by the operator is formed. The guide surface 11b is formed so as to widen from the bottom toward the opening 11a side, as exemplified by a U-shaped, mortar-shaped or V-shaped cross section. It is preferable that the center position C1 of the above and the center position C2 of the pressing protrusion 9c are coaxially aligned and formed. By forming the outside of the recess 11 into a flat surface as described above, the operation unit 10 is used as a reset switch operated by a rod-shaped operation body, and is also provided on a decorative panel on the electronic device side so as to be vertically movable. It can also be used as a push button switch that is externally operated by the operation button, and can be used for both purposes.

【0019】尚、前記のようにステム9は射出成形によ
って形成されるが、成形時のゲート位置を前記窪み11
の底部に形成している。これにより、金型内での樹脂流
れが良く、精度良く成形することができるうえ、更に成
形後のランナーからの切り離しを窪み11内で行うこと
ができるので、ゲート切断残りが外方に突出することが
ない。そのため、後述するカバー12とゲート切断残り
が当接することによってステム9全体が傾いたり、前記
ハウジング2の可撓性シート8とゲート切断面とが当接
することによるシートの破損を防止することが可能とな
る。
Although the stem 9 is formed by injection molding as described above, the gate position at the time of molding is set to the recess 11
Is formed at the bottom of the. As a result, the resin flow in the mold is good, molding can be performed with high precision, and further, the separation from the runner after molding can be performed in the depression 11, so that the gate cutting residue projects outward. Never. Therefore, it is possible to prevent the stem 9 as a whole from tilting due to the contact between the cover 12 and the gate cutting residue, which will be described later, or the sheet from being damaged due to the contact between the flexible sheet 8 of the housing 2 and the gate cutting surface. Becomes

【0020】カバー12は、金属薄板を前記ハウジング
2の上面形状に合わせて蓋閉可能な大きさにプレス成形
してなり、その平板面12aの略中央を円形に打抜いて
形成した貫通孔12bと、該平板面12aの対向端面を
下方に折り曲げて形成した側壁部12cとが設けられて
いる。前記貫通孔12bの内径は、前記ステム9の操作
部10の外形よりも大径に形成されており、該貫通孔1
2b内に操作部10を含む基部9aが出入可能に形成さ
れている。また、前記側壁部12cの端部には、各々外
側方に向けてL字状に張り出した一対の腕部12dが形
成されており、これらの腕部12dと側壁部の端部とで
囲まれた範囲は前述したハウジング2の位置決め突起4
の幅よりも若干大きくなるように長方形状に切り欠いて
係合溝12eが形成されている。
The cover 12 is formed by press-molding a thin metal plate into a size capable of closing the lid in accordance with the shape of the upper surface of the housing 2, and a through hole 12b formed by punching out a substantially central portion of the flat plate surface 12a in a circular shape. And a side wall portion 12c formed by bending the opposite end surface of the flat plate surface 12a downward. The inner diameter of the through hole 12b is larger than the outer diameter of the operating portion 10 of the stem 9, and the through hole 1b
A base portion 9a including the operation portion 10 is formed inside 2b so as to be able to move in and out. In addition, a pair of arm portions 12d each protruding outward in an L-shape are formed at the end portions of the side wall portions 12c, and are surrounded by the arm portions 12d and the end portions of the side wall portions. The range shown is the positioning protrusion 4 of the housing 2 described above.
The engaging groove 12e is formed by cutting out in a rectangular shape so as to be slightly larger than the width.

【0021】そして、前記ハウジング2の可撓性シート
8の上面に前記押圧突起9cが対向するようにステム9
が収納され、その上からハウジング2上面の開口を塞ぐ
ように前記カバー12が装着されている。そして、前記
カバーの係合溝12eとハウジング2の位置決め突起4
とを係合させて位置決めした状態で、前記カバーの腕部
12dを前記ハウジングのフック部4b側に折り曲げて
掛け止めして固定されている。また、この組み立て状態
において、可動接点7の頂部7cと前記ステム9の案内
面11bの中心および押圧突起9cとが同軸上に整列す
るように、前述のハウジングの位置決め突起4a、カバ
ーの係合溝12e、貫通孔12bとが形成されている。こ
のようにして組み立てられた押釦スイッチ1は、外形サ
イズが横4.3mm、縦3.9mm、ステム9の操作部
10の直径が2mm、案内面11bの開口部11aの直
径が1mmと極めて小型の外形を成しており、前記カバ
ー12の貫通孔12bからステム9の操作部10が露出
すると共に、ハウジング2内でステム9が昇降自在に抜
け止め保持されるものである。
Then, the stem 9 is arranged so that the pressing projection 9c faces the upper surface of the flexible sheet 8 of the housing 2.
Is accommodated, and the cover 12 is mounted from above to cover the opening on the upper surface of the housing 2. Then, the engaging groove 12e of the cover and the positioning protrusion 4 of the housing 2
The arms 12d of the cover are fixed by being bent and hooked to the side of the hook 4b of the housing in a state where they are engaged and positioned. Further, in this assembled state, the aforesaid housing positioning protrusion 4a and cover engagement groove are arranged so that the top portion 7c of the movable contact 7, the center of the guide surface 11b of the stem 9 and the pressing protrusion 9c are coaxially aligned. 12e and a through hole 12b are formed. The push button switch 1 assembled in this manner has an outer size of 4.3 mm in width, 3.9 mm in length, a diameter of the operating portion 10 of the stem 9 of 2 mm, and a diameter of the opening 11a of the guide surface 11b of 1 mm, which is extremely small. The operation portion 10 of the stem 9 is exposed from the through hole 12b of the cover 12, and the stem 9 is held in the housing 2 so as to be able to move up and down.

【0022】次に、上記のように構成された押釦スイッ
チのスイッチ切替え動作について説明する。押釦スイッ
チ1の操作部10の非押圧時(初期状態)には、可動接
点7のばね力によって、前記中央固定接点6aと前記可
動接点7の裏面7dとは離間しており、前記周辺固定接
点6bとの間は電気的に非導通状態となっており、スイ
ッチがオフ状態に維持されている。
Next, the switch switching operation of the push button switch configured as described above will be described. When the operation portion 10 of the push button switch 1 is not pressed (initial state), the central fixed contact 6a and the back surface 7d of the movable contact 7 are separated by the spring force of the movable contact 7, and the peripheral fixed contact is separated. 6b is electrically non-conducting, and the switch is maintained in the off state.

【0023】そして、このようなスイッチオフの状態か
ら、ステム9の操作部10を前記可動接点7のばね力に
抗して押圧操作すると、ハウジング2内をステム9が移
動して前記押圧突起9cが可撓性シート8を撓ませなが
ら、前記可動接点7の頂部7cを押し込んでいく。更に
ステム9を押圧操作することにより、可動接点7が座屈
反転してクリック感を創出すると共に、前記中央固定接
点6aと可動接点7の裏面7dとが接触し、前記周辺固定
接点6bとの間で電気的に導通状態に切り替わる。すな
わち、スイッチがオン状態に切り替わり、外部接続端子
5aを通じて、電子機器へ信号が送出されるものであ
る。
When the operating portion 10 of the stem 9 is pressed against the spring force of the movable contact 7 from such a switch-off state, the stem 9 moves within the housing 2 and the pressing projection 9c is formed. Pushes the top portion 7c of the movable contact 7 while bending the flexible sheet 8. When the stem 9 is further pressed, the movable contact 7 buckles and inverts to create a click feeling, and the central fixed contact 6a and the back surface 7d of the movable contact 7 come into contact with each other so that the peripheral fixed contact 6b It switches to an electrically conductive state between. That is, the switch is turned on and a signal is sent to the electronic device through the external connection terminal 5a.

【0024】その後、ステム9の操作部10への押圧力
が解除されると、蓄力された可動接点7のばね力によっ
て、可動接点7が反転前の状態に自己復帰し、これによ
り可動接点7の頂部位置が上昇して、可撓性シート8を
介してステム9を前記中央接点6aから離間する方向に
押し上げて、初期状態への復帰が行われるものである。
After that, when the pressing force of the stem 9 to the operating portion 10 is released, the accumulated spring force of the movable contact 7 causes the movable contact 7 to self-return to the state before the inversion, whereby the movable contact 7 is released. The top position of 7 rises and pushes up the stem 9 via the flexible sheet 8 in the direction away from the central contact 6a, and the initial state is restored.

【0025】次に、本発明の押釦スイッチを電子機器に
実装し、リセットスイッチとして用いる場合の操作につ
いて説明する。図8において、電子機器の基板50のパ
ターン上に押釦スイッチ1の外部接続端子5aが半田付
けされて、ステム9の操作部10を上向きにして固定さ
れている。また、上記押釦スイッチ1の上部には、若干
の空隙を空けて電子機器の意匠面の一部を形成する化粧
パネル51が設けられており、この化粧パネル51に
は、前記ステム9の操作部10と対応した位置に開口5
1aが形成されている。
Next, the operation when the push button switch of the present invention is mounted on an electronic device and used as a reset switch will be described. In FIG. 8, the external connection terminal 5a of the push button switch 1 is soldered onto the pattern of the substrate 50 of the electronic device, and is fixed with the operating portion 10 of the stem 9 facing upward. A decorative panel 51 is provided above the push button switch 1 to form a part of the design surface of the electronic device with a slight gap. The decorative panel 51 has an operating portion for the stem 9. Opening 5 at the position corresponding to 10
1a is formed.

【0026】そして、電子機器のリセット操作を行う時
には、操作者は手にしたペン等の棒状操作体60の先端
60aを前記化粧パネル51の開口51aから挿入し、機
器内部の押釦スイッチ1のステム9に形成された操作部
10を押圧操作するものである。この時、前記棒状操作
体60の先端60aは、化粧パネル51によって操作者
からは容易に目視できず、手探りの状態で前記ステムの
操作部10と当接させることになるが、本発明に係る押
釦スイッチにおいては、前記ステム9の操作部10に形
成した案内面11bによって、棒状操作体の先端60a
が、ステム9の中心位置にスムーズに案内されるもので
ある。
When resetting the electronic device, the operator inserts the tip 60a of the rod-shaped operating body 60 such as a pen held in the opening 51a of the decorative panel 51 into the stem of the push button switch 1 inside the device. The operation section 10 formed on the switch 9 is pressed. At this time, the tip 60a of the rod-shaped operation body 60 cannot be easily seen by the operator by the decorative panel 51, and will be brought into contact with the operation portion 10 of the stem in a groping state. In the push button switch, the tip 60a of the rod-shaped operating body is guided by the guide surface 11b formed on the operating portion 10 of the stem 9.
Is smoothly guided to the center position of the stem 9.

【0027】そして、ステム9の中心位置の下面には前
記した可動接点7の頂部7cに対応した押圧突起9cが形
成されているため、棒状操作体60による押圧力を可動
接点の頂部7cに確実に付与でき、スイッチの切替え動
作を確実に行うことができる。そのため、押圧可能な頂
部7cの範囲が狭い小径の反転ばねを可動接点7として
用いることが可能となり、ハウジング2の幅方向の占有
面積を小さくすることができるので、押釦スイッチの外
形サイズの小型化が可能となり、電子機器の基板への実
装面積を減少させることが可能となる。
Since the pressing projection 9c corresponding to the apex 7c of the movable contact 7 is formed on the lower surface of the center of the stem 9, the pressing force of the rod-shaped operating body 60 is surely applied to the apex 7c of the movable contact. It is possible to reliably perform the switching operation of the switch. Therefore, it is possible to use a small diameter reversing spring having a narrow range of the top portion 7c that can be pressed as the movable contact 7, and it is possible to reduce the occupying area of the housing 2 in the width direction, thereby reducing the external size of the push button switch. Therefore, the mounting area of the electronic device on the substrate can be reduced.

【0028】また、上記案内面11bの断面形状を底部
が開口部11a側に向かって拡開していくように形成し
て、その底部の中心位置C1と、押圧突起9cの中心位
置C2とを同軸上に形成したものにおいては、更に確実
に棒状操作体60の先端60aを可動接点7の頂部7cに
対応する位置に誘導することができる。
Further, the cross-sectional shape of the guide surface 11b is formed so that the bottom part expands toward the opening 11a side, and the center position C1 of the bottom part and the center position C2 of the pressing projection 9c are formed. In the case where the rod-shaped operation body 60 is formed coaxially, the tip 60a of the rod-shaped operation body 60 can be more reliably guided to a position corresponding to the top portion 7c of the movable contact 7.

【0029】尚、この押釦スイッチ1の操作部10の高
さは、カバー12の表面から突出しない高さに形成する
方が好ましい。カバー12と操作部10とをこのような
高さ関係に設定すると、押釦スイッチ1と化粧パネル5
1の裏面とを高さ方向に近接させて配置することが可能
となり、両者の高さ方向の空隙を減少させることができ
るので、前記棒状操作体60が、ステム9の操作部10
の外方に滑ってステム9と化粧パネル51との間に挟み
込まれることがない。
The height of the operating portion 10 of the push button switch 1 is preferably formed so as not to project from the surface of the cover 12. When the cover 12 and the operation unit 10 are set in such a height relationship, the push button switch 1 and the decorative panel 5 are set.
Since it is possible to dispose the back surface of 1 in proximity to the height direction, and reduce the gap in the height direction between the two, the rod-shaped operation body 60 is the operation portion 10 of the stem 9.
It does not slip between the stem 9 and the decorative panel 51 by sliding outward.

【0030】更に、化粧パネル51が予期せぬ外力によ
って下方に撓むようなことがあっても、押釦スイッチ1
の操作部10が化粧パネル51の裏面によって押圧され
ることがなく、誤操作を防止できるうえ、高さ方向の無
駄な空隙を減少させることができるので、電子機器本体
の高さを薄型化することが可能となる。尚、上記の実施
形態の説明においては、前記案内面11bをステム9の
操作部10よりも下方に底部を窪ませて形成したもので
説明したが、本発明は上記に限定されるものではなく、
例えば、操作部10よりも上方に向けて連続した環状ま
たは複数の点在した突出部を設けて案内面を構成するこ
とも可能であることは言うまでもない。また、押圧突起
9cの中心位置に対応させて操作部10から上方に向け
て突出する1個の突起で形成することも可能であり、突
起を略円錐状や略角錐状に形成することも可能である。
Further, even if the decorative panel 51 is bent downward by an unexpected external force, the push button switch 1
Since the operation unit 10 is not pressed by the back surface of the decorative panel 51, erroneous operation can be prevented, and useless voids in the height direction can be reduced, so that the height of the electronic device body can be reduced. Is possible. In the above description of the embodiment, the guide surface 11b is formed by denting the bottom portion below the operating portion 10 of the stem 9, but the present invention is not limited to the above. ,
For example, it is needless to say that the guide surface can be configured by providing a continuous annular shape or a plurality of interspersed protruding portions upward from the operation portion 10. It is also possible to form a single protrusion protruding upward from the operation portion 10 in correspondence with the center position of the pressing protrusion 9c, and it is also possible to form the protrusion into a substantially conical shape or a substantially pyramidal shape. Is.

【0031】[0031]

【発明の効果】以上説明したように、本発明の押釦スイ
ッチは、収容部を形成しその収容部内に固定接点を突出
させたハウジングと、一端が固定接点に導通し他端がハ
ウジング外部に導出された外部接続端子と、前記収容部
内に配置され、前記固定接点に接離可能な反転ばねから
なる可動接点と、前記収容部内に移動自在に収容され、
一面に前記可動接点の頂部に対向する押圧突起を有し、
他面に操作部を設けたステムと、前記操作部を外部から
操作可能に露出させてステムを前記ハウジング内に抜け
止め保持するカバーとを備え、前記ステムの操作部に、
棒状の操作体の先端を前記押圧突起方向に案内する案内
面を形成したことから、電子機器の筐体に設けた開口内
にペン先などの棒状操作体を挿入してスイッチ操作を行
う場合であっても、棒状操作体の先端をステムの中心位
置にスムーズに案内することができ、反転ばねの頂部を
確実に押圧できるので、確実なスイッチ切替え操作が可
能となる。また、小型の反転ばねを用いることができ、
装置全体の小型化が可能となる。
As described above, the push button switch of the present invention has a housing having a housing and a fixed contact protruding into the housing, and one end connected to the fixed contact and the other drawn to the outside of the housing. An external connection terminal, a movable contact, which is disposed in the accommodating portion and includes a reversing spring that can be brought into contact with and separated from the fixed contact, and movably accommodated in the accommodating portion,
On one surface, having a pressing protrusion facing the top of the movable contact,
A stem having an operating portion on the other surface, and a cover for exposing the operating portion from the outside so as to prevent the stem from slipping out of the housing, and the operating portion of the stem,
Since the guide surface for guiding the tip of the rod-shaped operating body in the pressing protrusion direction is formed, it is possible to perform the switch operation by inserting the rod-shaped operating body such as a pen tip into the opening provided in the housing of the electronic device. Even if there is, the tip of the rod-shaped operating body can be smoothly guided to the center position of the stem, and the top of the reversing spring can be pressed reliably, so that a reliable switch switching operation is possible. Also, a small reversing spring can be used,
The size of the entire device can be reduced.

【0032】また、前記案内面を底部が開口部よりも幅
狭となる凹部で形成すると共に、その底部の中心と一致
させて前記押圧突起を形成したので、棒状操作体の先端
をステムの押圧突起により確実に案内することが可能と
なる。
Further, since the guide surface is formed as a recess whose bottom is narrower than the opening, and the pressing projection is formed so as to be aligned with the center of the bottom, the tip of the rod-shaped operating body is pressed by the stem. It becomes possible to reliably guide by the projection.

【0033】また、前記操作部を前記カバーの表面から
突出しない高さに形成したので、押釦スイッチと電子機
器の筐体の裏面とを近接させて配置することが可能とな
り、棒状操作体が筐体の開口から斜めに侵入しても、ス
テムの操作部上を滑って筐体との間に挟み込まれたり、
ステムがこじられて破壊することがない。また、電子機
器の筐体が撓んでも、押釦スイッチのステムが押圧され
ることがなく、誤操作を防止できる。
Further, since the operating portion is formed at a height which does not protrude from the surface of the cover, it becomes possible to dispose the push button switch and the rear surface of the housing of the electronic device close to each other, and the rod-shaped operating body is housed in the housing. Even if it enters obliquely through the opening of the body, it slips on the operation part of the stem and is caught between the case and
The stem will not be damaged and destroyed. Further, even if the housing of the electronic device is bent, the stem of the push button switch is not pressed, and erroneous operation can be prevented.

【0034】また、前記可動接点は略円形の外周縁部を
有し、中心に向けてドーム状に膨出するようプレス成形
された導電性の金属板ばねで形成したので、小径の反転
ばねにおいても頂部を精度良く形成でき、外周縁部を利
用してステムの案内面と可動接点の頂部とを簡単に整列
させて配置することができる。
Further, since the movable contact has a substantially circular outer peripheral edge portion and is formed of a conductive metal leaf spring press-molded so as to bulge toward the center in a dome shape, a small-diameter reversing spring is used. Also, the top portion can be formed with high precision, and the guide surface of the stem and the top portion of the movable contact can be easily aligned by using the outer peripheral edge portion.

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

【図1】本発明の一実施例に係る押釦スイッチの平面図
である。
FIG. 1 is a plan view of a push button switch according to an embodiment of the present invention.

【図2】本発明の一実施例に係る押釦スイッチの側面図
である。
FIG. 2 is a side view of a push button switch according to an embodiment of the present invention.

【図3】本発明の一実施例に係る押釦スイッチのハウジ
ングの平面図である。
FIG. 3 is a plan view of the housing of the push button switch according to the embodiment of the present invention.

【図4】本発明の一実施例に係る押釦スイッチの可動接
点の拡大断面図である。
FIG. 4 is an enlarged cross-sectional view of a movable contact of the push button switch according to the embodiment of the present invention.

【図5】本発明の一実施例に係る押釦スイッチのステム
の平面図である。
FIG. 5 is a plan view of the stem of the push button switch according to the embodiment of the present invention.

【図6】本発明の一実施例に係る押釦スイッチのステム
の正面図である。
FIG. 6 is a front view of the stem of the push button switch according to the embodiment of the present invention.

【図7】本発明の一実施例に係る押釦スイッチのステム
の右側面図である。
FIG. 7 is a right side view of the stem of the push button switch according to the embodiment of the present invention.

【図8】本発明の一実施例に係る押釦スイッチを電子機
器に実装した状態での操作説明図である。
FIG. 8 is an operation explanatory diagram in a state where the push button switch according to the embodiment of the present invention is mounted on an electronic device.

【図9】従来の押釦スイッチを電子機器に実装した状態
での操作説明図である。
FIG. 9 is an operation explanatory diagram in a state where a conventional push button switch is mounted on an electronic device.

【符号の説明】[Explanation of symbols]

1 押釦スイッチ 2 ハウジング 6a 固定接点 7 可動接点 9 ステム 9c 押圧突起 10 操作部 11b 案内面 12 カバー 60 棒状操作体 60a 棒状操作体の先端 1 push button switch 2 housing 6a Fixed contact 7 movable contacts 9 stems 9c Pressing protrusion 10 Operation part 11b Guideway 12 covers 60 Rod-shaped operation body 60a Tip of rod-shaped operating body

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】収容部を形成しその収容部内に固定接点を
突出させたハウジングと、一端が固定接点に導通し他端
がハウジング外部に導出された外部接続端子と、前記収
容部内に配置され、前記固定接点に接離可能な反転ばね
からなる可動接点と、前記収容部内に移動自在に収容さ
れ、一面に前記可動接点の頂部に対向する押圧突起を有
し、他面に操作部を設けたステムと、前記操作部を外部
から操作可能に露出させてステムを前記ハウジング内に
抜け止め保持するカバーとを備え、前記ステムの操作部
に、棒状の操作体の先端を前記押圧突起方向に案内する
案内面を形成したことを特徴とする押釦スイッチ。
1. A housing in which a housing portion is formed and a fixed contact is projected into the housing portion, an external connection terminal whose one end is electrically connected to the fixed contact and the other end is led out of the housing, and which is arranged in the housing portion. A movable contact composed of a reversing spring capable of coming into contact with and separating from the fixed contact, and a movable protrusion housed in the accommodating portion and having a pressing projection facing the top of the movable contact on one surface and an operating portion on the other surface. A stem, and a cover for exposing the operating portion from the outside so as to prevent the stem from slipping out of the housing, and the operating portion of the stem is provided with a tip of a rod-shaped operating body in the pressing protrusion direction. A push button switch characterized in that a guide surface for guiding is formed.
【請求項2】前記案内面を底部が開口部よりも幅狭とな
る凹部で形成すると共に、その底部の中心と一致させて
前記押圧突起を形成したことを特徴とする前記請求項1
に記載の押釦スイッチ。
2. The guide surface is formed as a recess whose bottom is narrower than the opening, and the pressing projection is formed so as to coincide with the center of the bottom.
Push button switch described in.
【請求項3】前記操作部を前記カバーの表面から突出し
ない高さに形成したことを特徴とする前記請求項1また
は2の何れかに記載の押釦スイッチ。
3. The push button switch according to claim 1, wherein the operating portion is formed at a height that does not project from the surface of the cover.
【請求項4】前記可動接点は略円形の外周縁部を有し、
中心に向けてドーム状に膨出するようプレス成形された
導電性の金属板ばねからなることを特徴とする前記請求
項1から3の何れかに記載の押釦スイッチ。
4. The movable contact has a substantially circular outer peripheral edge portion,
The push button switch according to any one of claims 1 to 3, wherein the push button switch comprises a conductive metal leaf spring press-molded so as to bulge toward the center in a dome shape.
JP2001383279A 2001-12-17 2001-12-17 Push-button switch Pending JP2003187668A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001383279A JP2003187668A (en) 2001-12-17 2001-12-17 Push-button switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001383279A JP2003187668A (en) 2001-12-17 2001-12-17 Push-button switch

Publications (1)

Publication Number Publication Date
JP2003187668A true JP2003187668A (en) 2003-07-04

Family

ID=27593378

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001383279A Pending JP2003187668A (en) 2001-12-17 2001-12-17 Push-button switch

Country Status (1)

Country Link
JP (1) JP2003187668A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100440406C (en) * 2005-01-27 2008-12-03 株式会社泛泰 Control apparatus for an end key and a portable terminal employing the same
JP2015185474A (en) * 2014-03-25 2015-10-22 アルプス電気株式会社 push switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100440406C (en) * 2005-01-27 2008-12-03 株式会社泛泰 Control apparatus for an end key and a portable terminal employing the same
JP2015185474A (en) * 2014-03-25 2015-10-22 アルプス電気株式会社 push switch

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