JPH01186721A - Switch - Google Patents

Abstract

PURPOSE:To enable obtaining two-way turning operation and retaining ordinarily a switch at a neutral position by equipping a circuit board having a fixed contact point selected and connected via the sliding motion of a slide contact point member and a reset spring having a pair of cantilever type elastic arms with the free ends thereof projected to both sides sandwiching a cam part. CONSTITUTION:When an operation shaft 3 is subjected to a turning force in an arrow A direction, only an elastic arm 24 is deformed. Furthermore, a slide contact point member 6 comes in contact with a common fixed contact point 25 and a selector contact point 26, thereby generating electrical continuity between the common fixed contact point 25 and the selector contact point 26. Also, when the external force is released, the resilient force of the elastic arm 24 energized with a spring is carried with a cam part 31, and the operation shaft 3 is returned and again retained at a neutral position. On the contrary, when the operation shaft 3 is subjected to a turning force in an arrow B direction against the elastic force of an elastic arm 23, the slide contact point member 6 comes in contact with the common fixed contact point 25 and a selector contact point 27, thereby giving continuity. According to the aforesaid construction, it is possible to obtain a two-way operation type switch of simple construction ordinarily retained at a neutral position.

Description

【発明の詳細な説明】 〈産業の利用分野〉 本発明は、例えば自動車のドアロック機構などに使用さ
れるスイッチに関する。DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to a switch used, for example, in an automobile door lock mechanism.

〈従来の技術〉 自動車のドアロック機構などでは、キーを差し込んで右
側へ回動させるとドアロックと同時に盗難防止装置が作
動され、左側へ回動させるとドアロックの解除と盗難防
止装置の解除が行なわれる構造にしたものがある。<Conventional technology> In a car door lock mechanism, when the key is inserted and turned to the right, the door locks and the anti-theft device is activated at the same time, and when the key is turned to the left, the door is unlocked and the anti-theft device is activated. There is a structure that allows this to take place.

このような装置では、キーを中立位置で差し込み、次い
で右または左方向へ選択するのに、二方向の回動操作が
得られることが必要である。Such devices require that the key be inserted in the neutral position and then be able to provide a two-way rotational operation to select the right or left direction.

そこで従来構造は、キーを差し込んで回動される回動軸
と、この回動軸と別に回動端にそれぞれスイッチを一つ
ずつ設けた構造を採っている。Therefore, the conventional structure employs a structure in which a rotating shaft is rotated by inserting a key, and a switch is provided at each rotating end separately from this rotating shaft.

〈発明が解決しようとする問題点〉 このためスイッチが二つ必要でコスト高になるとともに
、構造も複雑化し、ユニット化も難しい。<Problems to be solved by the invention> For this reason, two switches are required, which increases the cost, complicates the structure, and makes it difficult to unitize.

また組み付は作業も複雑で工数がかかる問題などがあっ
た。There were also problems with assembly, which was complicated and required a lot of man-hours.

本発明は、上記問題点に鑑みてなされたものであり、簡
単な構造で二方向回動操作が得られるとともに、平時は
中立位置に保持させておくことのできる構造にしたスイ
ッチを提供することを目的とする。The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a switch that has a simple structure that allows two-way rotation operation, and that can be held at a neutral position during normal times. With the goal.

く問題点を解決するための手段〉 上記目的を達成するため本発明は、ケースと、前記ケー
スに回動自在に支持されているとともに外周部より突出
されたカム部を有する操作軸と、前記ケース内で前記操
作軸に取り付けられて一体に回転される摺動接点部材と
、前記摺動接点部材の回転面に対応して前記摺動接点部
材に当接配置されているとともに前記摺動接点部材の摺
動で切り換え接続される固定接点を設けた回路基板と、
前記カム部を挾んだ両側にそれぞれ自由端が突出された
一対の片持状弾性アームを設けた復帰ばねとを備え、前
記弾性アームの弾性変形を伴なわせて前記操作軸が回動
され、外部操作力が取シ除かれると前記弾性アームの復
帰力で中立位置へ戻る構成にしたものである。Means for Solving the Problems In order to achieve the above object, the present invention provides a case, an operating shaft rotatably supported by the case and having a cam portion protruding from an outer circumferential portion, a sliding contact member that is attached to the operating shaft and rotated together with the operating shaft within the case; and a sliding contact that is arranged in contact with the sliding contact member in correspondence with a rotating surface of the sliding contact member, and the sliding contact A circuit board equipped with fixed contacts that are switched and connected by sliding parts,
a return spring having a pair of cantilevered elastic arms each having a protruding free end on both sides of the cam portion, the operating shaft being rotated with elastic deformation of the elastic arms; , when the external operating force is removed, the elastic arm returns to the neutral position by the return force of the elastic arm.

〈実施例〉 以下、本発明の実施例について図面を参照して説明する
。<Examples> Examples of the present invention will be described below with reference to the drawings.

第１図乃至第４図は、本発明の一実施例に係るスイッチ
を概略的に示したものである。1 to 4 schematically illustrate a switch according to an embodiment of the present invention.

このスイッチ１は、ケース２、操作軸３、回路基板４、
復帰ばね５、摺動接点部材６などで構成されている。そ
して、さらにケース２は、樹脂材で各々別部材として成
形された後に、互いに組み合わされるケース本体７とカ
バー８とで形成されている。This switch 1 includes a case 2, an operation shaft 3, a circuit board 4,
It is composed of a return spring 5, a sliding contact member 6, etc. Further, the case 2 is formed of a case body 7 and a cover 8, which are each molded as separate members from a resin material and then assembled with each other.

カバー８は、４つの側壁９ａ、９ｂ、９ｃ、９ｄと天壁
１０とで、下面が開口した箱状に形成されている。そし
て天壁１０には、カバー８の内側から筒状に突き出され
た状態の筒部１１が一体に設けられている。この筒部１
１は、下側に太径筒部１２が、上側に小径筒部１３がそ
れぞれ形成されている。これら小径筒部１３と太径筒部
１２の内部空間は互いにつながり、小径筒部１３の貫通
穴１３ａを通してカバー８の内外が通じている。また側
壁９ｂにはリード線１４を通す３つの孔１５が形成され
、この孔１５に管状のシール部材１６を介装させてリー
ド線１４が取り付けられている。The cover 8 has four side walls 9a, 9b, 9c, and 9d and a top wall 10, and is formed into a box shape with an open bottom. A cylindrical portion 11 protruding from the inside of the cover 8 in a cylindrical shape is integrally provided on the top wall 10. This cylinder part 1
1 has a large diameter cylindrical portion 12 formed on the lower side and a small diameter cylindrical portion 13 formed on the upper side. The inner spaces of the small diameter cylindrical portion 13 and the large diameter cylindrical portion 12 are connected to each other, and the inside and outside of the cover 8 communicate through the through hole 13a of the small diameter cylindrical portion 13. Further, three holes 15 through which the lead wires 14 are passed are formed in the side wall 9b, and the lead wires 14 are attached to the holes 15 with tubular seal members 16 interposed therebetween.

さらに側壁９ａ　、９ｂ　、９ｃ　、９ｄで形成された
下端開口部分の内側には、係止用段部１７が全周にわた
って形成され、この係止用段部１７でケース本体７との
位置決めが得られる状態になっている。Furthermore, a locking step 17 is formed over the entire circumference inside the lower end opening formed by the side walls 9a, 9b, 9c, and 9d, and this locking step 17 allows positioning with the case body 7. It is in a state where it can be used.

ケース本体７は、カバー８の下端開口部分に対応した平
面形状をなし、この下端開口部分に受は入れられる。そ
して係止用段部１７に当接位置決めされた状態でカバー
８と組合せ結合される。またケース本体７には、上面７
ａから上方へそれぞれ突出する状態で、軸受部１８．ば
ね受は軸１９゜ストッパーピン２０，２１．基板支持用
突壁２２ａ。The case body 7 has a planar shape corresponding to the opening at the lower end of the cover 8, and a receiver is inserted into the opening at the lower end. Then, it is combined and coupled with the cover 8 in a state where it is positioned in contact with the locking step portion 17. The case body 7 also has a top surface 7.
The bearing portions 18.a respectively protrude upward from the bearing portions 18.a. The spring bearing is the shaft 19° and the stopper pins 20, 21. Board supporting projecting wall 22a.

２２ｂが一体に設けられている。22b is integrally provided.

そして軸受部１８は、カバー８の筒部１１と対応した位
置に設けられている。さらに軸受部１８は、上面が開口
し下面がケース本体７で閉じられた筒部１８ａと、この
筒部１８ａから一体に上方へ延ばされた低背外周部１８
ｂと、同じく筒部１８ａから一体に上方へ延ばされた高
背外周部１８ｃとを一体に設けて形成されている。The bearing portion 18 is provided at a position corresponding to the cylindrical portion 11 of the cover 8. Furthermore, the bearing portion 18 includes a cylindrical portion 18a whose upper surface is open and whose lower surface is closed by the case body 7, and a low-profile outer peripheral portion 18 that integrally extends upward from the cylindrical portion 18a.
b, and a tall outer circumferential portion 18c that also extends upward from the cylindrical portion 18a.

ばね受は軸１９は、低背外周部１８ｂと高背外周部１８
ｃとの間に対応した状態で、軸受部１８に隣接して設け
られている。The spring bearing shaft 19 has a low profile outer peripheral part 18b and a high profile outer peripheral part 18.
It is provided adjacent to the bearing part 18 in a corresponding state between the bearing part c and the bearing part 18.

ストッパーピン２０．２１は、筒部１８ａを挾んでばね
受は軸１９と反対側に位置して、ばね受は軸１９の左右
に点在して設けられている。The stopper pins 20, 21 sandwich the cylindrical portion 18a, and the spring bearings are located on the opposite side of the shaft 19, and the spring bearings are provided scattered on the left and right sides of the shaft 19.

基板支持用突壁２２ａ、２２ｂは、回路基板４を取り付
ける位置に対応して設けられ、回路基板４の側面と下面
が受けられるように形成されている。The board supporting projecting walls 22a and 22b are provided corresponding to the positions where the circuit board 4 is attached, and are formed to receive the side and bottom surfaces of the circuit board 4.

次に、復帰用ばね５はコイル状く形成されて、ばね受は
軸１９の外周に巻回された状態で取り付けられる。また
上部巻回端と下部巻回端の一部が棒状に延ばされ、この
巻回端で片持状の弾性アーム２３．２４が形成されてい
る。そして復帰用ばね５は、ばね受は軸１９に取シ付け
られるときに、弾性アーム２３と弾性アーム２４とを上
下で互いにたすき掛は状に交叉させた状態にされ、さら
に一方の弾性アーム２３が低背外周部１８ｂの周面に弾
圧係合されるとともに他方の弾性アーム２４が高背外周
部１８ｃの局面に弾圧係合されて取り付けられる。また
、この取り付けで各弾性アーム２３゜２４が、軸受軸１
８を挾んで平行に、はね受は軸１９と反対側へ片持状に
延出された状態を得ている。Next, the return spring 5 is formed into a coil shape, and the spring bearing is attached to the shaft 19 in a wound state. Further, a portion of the upper winding end and the lower winding end are extended into a rod shape, and cantilevered elastic arms 23, 24 are formed at these winding ends. In the return spring 5, when the spring bearing is attached to the shaft 19, the elastic arms 23 and 24 are placed in a state where the elastic arms 23 and 24 cross each other at the upper and lower sides, and one of the elastic arms 23 is resiliently engaged with the circumferential surface of the low-profile outer peripheral portion 18b, and the other elastic arm 24 is resiliently engaged with and attached to the curved surface of the high-profile outer peripheral portion 18c. In addition, with this installation, each elastic arm 23° 24 is attached to the bearing shaft 1.
In parallel to each other with 8 in between, the spring receiver is extended in a cantilevered manner toward the opposite side of the shaft 19.

回路基板４は、基板支持用突壁２２ａ、　２２：ｂで支
持され、ケース本体７上に取り付けられている。The circuit board 4 is supported by board supporting projecting walls 22a, 22:b, and is mounted on the case body 7.

また上面には固定接点２５，２６．２７が印刷配線され
ている。この各固定接点２５，２６．２７は、それぞれ
異なるリード線１４とハンダ接続されている。このうち
固定接点２５は共通固定接点として、軸受部１８を同心
とした弧状に連続して形成されている。そして他の固定
接点２６　、２７は切換られる固定接点として、固定接
点２５の外側で左右に離された状態で弧状に形成されて
いる。Furthermore, fixed contacts 25, 26, and 27 are printed and wired on the top surface. Each of the fixed contacts 25, 26, 27 is connected to a different lead wire 14 by soldering. Among these, the fixed contact 25 is a common fixed contact and is continuously formed in an arc shape with the bearing portion 18 concentric. The other fixed contacts 26 and 27 are fixed contacts to be switched, and are formed in an arc shape outside the fixed contact 25 and separated from each other to the left and right.

操作軸３は、鍔部２８と、鍔部２８の上側に設けられた
操作部２９と、鍔部２８の下側に設けられた支軸部３０
と、鍔部２８の外周から支軸部３０の外側に溢って設け
られたカム部３１と、カム部３１から外側へ突出されて
設けられた摺動接点収納ケース部３２とを設けて樹脂材
で一体成形されている。The operation shaft 3 includes a flange 28 , an operation section 29 provided above the flange 28 , and a support shaft 30 provided below the flange 28 .
A cam portion 31 is provided overflowing from the outer periphery of the collar portion 28 to the outside of the support shaft portion 30, and a sliding contact storage case portion 32 is provided so as to protrude outward from the cam portion 31. It is molded in one piece.

そして鍔部２８の外径寸法は大径筒部１３の内径寸法に
略等しく形成され、また操作部２９の外径寸法は小径筒
部１２の内径寸法に、支軸部３０の外径寸法は軸受部１
８の内径寸法にそれぞれ等しく形成され各部において回
動自在に支持される。The outer diameter of the flange 28 is approximately equal to the inner diameter of the large diameter tube 13, the outer diameter of the operating portion 29 is equal to the inner diameter of the small diameter tube 12, and the outer diameter of the support shaft 30 is approximately equal to the inner diameter of the large diameter tube 13. Bearing part 1
8, and are rotatably supported at each part.

また操作部２９の上面には、キー（不図示）が差し込ま
れる係合凹部３４が設けられている。次にカム部３１は
、軸受部１８の外径寸法よシも大きく、横断面形状が弧
状に形成され、さらに左右方向での幅寸法が弾性アーム
２３．２４間の離間寸法よりも若干大きく形成されてい
る。またカム部３１から形成された収納ケース部３２は
、固定接点２５，２６，２７が形成された部分に対応し
て設けられている。この収納ケース部３２には、下側に
開口を持つ凹部３２ａが形成され、凹部３２ａ内に補助
ばね３５と摺動接点部材６とが収納されている。補助ば
ね３５はコイルばねとして形成され、一端が凹部３２ａ
に固定されて他端が摺動接点部材６に固定されている。Further, an engagement recess 34 into which a key (not shown) is inserted is provided on the upper surface of the operation section 29. Next, the cam part 31 is larger in outer diameter than the bearing part 18, has an arcuate cross-sectional shape, and has a width in the left-right direction that is slightly larger than the distance between the elastic arms 23 and 24. has been done. Further, a storage case portion 32 formed from the cam portion 31 is provided corresponding to the portion where the fixed contacts 25, 26, and 27 are formed. A recess 32a having an opening on the lower side is formed in the storage case portion 32, and an auxiliary spring 35 and a sliding contact member 6 are housed in the recess 32a. The auxiliary spring 35 is formed as a coil spring, and one end has a recess 32a.
The other end is fixed to the sliding contact member 6.

これにより摺動接点部材６は補助ばね３５で吊シ下げら
れた状態で収納ケース部３２に支持され、また組み立て
られた状態で回路基板４上に圧接する圧接力が得られる
ようになっている。As a result, the sliding contact member 6 is supported by the storage case part 32 in a suspended state by the auxiliary spring 35, and the pressure contact member 6 can be pressed against the circuit board 4 in the assembled state. .

このように構成されたスイッチ１は、組み立てる場合、
まずケース本体７に回路基板４と復帰ばね５を取シ付け
た状態にされる。次いで摺動接点部材６を取り付けた操
作軸３が取り付けられる。When the switch 1 configured in this way is assembled,
First, the circuit board 4 and the return spring 5 are attached to the case body 7. Next, the operating shaft 3 to which the sliding contact member 6 is attached is attached.

このとき収納ケース部３２を回路基板４上に対応させる
とともに、カム部３１を弾性アーム２３゜２４間に配置
させた状態で、支軸部３０の下端が軸受部１８内に挿入
配置されて位置決められる。At this time, with the storage case part 32 placed on the circuit board 4 and the cam part 31 arranged between the elastic arms 23 and 24, the lower end of the support shaft part 30 is inserted into the bearing part 18 and positioned. It will be done.

次いでカバー８とケース本体７とを組み付けるが、この
組み付けに先立って操作部２９にシール用の０リング３
３を装着させる。そしてカバー８の下側から操作部２９
を挿入させた状態でカバー８が組み付けられる。すると
、鍔部２９が大径筒部１９内に入シ込んで０リング３３
が小径筒部１２の下面に圧接された状態になるとともに
、操作部２９の上部が筒部１１から上方へ突出されてス
イッチｌが完成する。Next, the cover 8 and the case body 7 are assembled, but before this assembly, a sealing O-ring 3 is attached to the operating part 29.
3. Then, from the bottom of the cover 8, the operating section 29
The cover 8 is assembled with the cover 8 inserted. Then, the collar part 29 enters into the large diameter cylinder part 19 and the O-ring 33
is in pressure contact with the lower surface of the small-diameter cylindrical portion 12, and the upper part of the operating portion 29 is projected upward from the cylindrical portion 11, completing the switch 1.

また、このようにして組み立てられたスイッチ１は、弾
性アーム２３．２４でカム部３１の両端が支持され、両
側からはソ同じ大きさの弾発力が与えられている。これ
により第３図中に実線で示すように、平時は操作軸３が
中立位置に保持され、摺動接点部材６は共通固定接点２
５だけに接触された状態になっている。Further, in the switch 1 assembled in this manner, both ends of the cam portion 31 are supported by the elastic arms 23 and 24, and elastic forces of the same magnitude are applied from both sides. As a result, as shown by the solid line in FIG. 3, the operating shaft 3 is held in the neutral position during normal times, and the sliding contact member 6
It is in a state where only 5 has been contacted.

そして、この状態からカバー８外に突出されている操作
軸２９を介して、操作軸３に弾性アーム２４の弾性力に
抗した矢印Ａ方向への回動力を与えると、弾性アーム２
４がストッパーピン２０とぶつかるまで操作軸３を回動
させることができる。From this state, when a rotational force is applied to the operating shaft 3 in the direction of arrow A against the elastic force of the elastic arm 24 via the operating shaft 29 protruding outside the cover 8, the elastic arm 2
The operation shaft 3 can be rotated until the shaft 4 collides with the stopper pin 20.

このとき他方の弾性アーム２３は低背外周部１８ｂで規
制されて動かない。このため弾性アーム２４だけがバネ
チャージされた状態で変形される。また摺動接点部材６
が共通固定接点２５と切換接点２６とに当接し、共通固
定接点２５と切換接点２６との間が導通状態になる。ま
た、この状態から操作動３を矢印Ａ方向へ回動させてい
た外力を取り除くと、バネチャージされている弾性アー
ム２４の反発力をカム部３１で受け、操作軸３が矢印Ｂ
方向へ中立位置まで戻されて再びこの中立位置で支持さ
れる。At this time, the other elastic arm 23 is restricted by the low profile outer peripheral portion 18b and does not move. Therefore, only the elastic arm 24 is deformed in a spring-charged state. Also, the sliding contact member 6
contacts the common fixed contact 25 and the switching contact 26, and the common fixed contact 25 and the switching contact 26 become electrically conductive. Furthermore, when the external force that was rotating the operating shaft 3 in the direction of arrow A is removed from this state, the repulsive force of the spring-charged elastic arm 24 is received by the cam portion 31, and the operating shaft 3 is rotated in the direction indicated by arrow A.
direction and is returned to the neutral position and supported again at this neutral position.

そして逆に、矢印Ｂ方向への回動力を弾性アーム２３の
弾性力に抗して操作軸３に与えると、弾性アーム２４は
高背外周部１８ｃで規制されて動かず、弾性アーム２４
だけがストッパーピン２１とぶつかるまでバネチャージ
されながら操作軸３とともに回動される。また、この回
動で摺動接点部材６が共通固定接点２５と切換接点２７
とに当接し、共通接点２５と切換接点２．７との間を導
通状態になる。次いで操作軸３を矢印方向へ回動させて
いた外力を取り除くと、バネチャージされている弾性ア
ーム２３の反発力をカム部３１で受け、操作軸３が矢印
Ａ方向へ中立位置まで戻されて再びこの中立位置で支持
される。Conversely, when a rotational force in the direction of arrow B is applied to the operating shaft 3 against the elastic force of the elastic arm 23, the elastic arm 24 is restricted by the tall outer peripheral portion 18c and does not move.
It is rotated together with the operating shaft 3 while being spring-charged until it collides with the stopper pin 21. Also, this rotation causes the sliding contact member 6 to move between the common fixed contact 25 and the switching contact 27.
The common contact 25 and the switching contact 2.7 are electrically connected to each other. Next, when the external force that was rotating the operating shaft 3 in the direction of the arrow is removed, the cam portion 31 receives the repulsive force of the spring-charged elastic arm 23, and the operating shaft 3 is returned to the neutral position in the direction of the arrow A. It is again supported in this neutral position.

したがってスイッチ１は、操作軸３を左または右方向へ
選択回動させると、異なる回路の開閉制御を行なうこと
ができる。そして操作軸３への外部操作力を取り除くと
、弾性アーム２３，２４の反発力で中立位置へ自動的に
戻され、この中立位置で保持される。Therefore, the switch 1 can perform opening/closing control of different circuits by selectively rotating the operating shaft 3 in the left or right direction. When the external operating force on the operating shaft 3 is removed, the repulsive force of the elastic arms 23 and 24 automatically returns the operating shaft to the neutral position, and the operating shaft 3 is held at this neutral position.

また、このスイッチ１を自動車などのドアロック機構部
に適用する場合は、キーシリンダーの先端に対応させて
操作軸３を配設し、キーシリンダーに差し込まれたキー
の先端が係合凹部３４に係合されてキーと一体に回転さ
せるように構成すると、右方向へキーを回転させた場合
はドアロックと同時に盗難防止装置を作動させる信号を
入力させ、逆に左方向へキーを回転させるドアロックの
解除と盗難防止装置の解除を行なわせる信号を入力させ
ることができる。In addition, when this switch 1 is applied to a door lock mechanism of an automobile, etc., the operating shaft 3 is arranged to correspond to the tip of the key cylinder, so that the tip of the key inserted into the key cylinder fits into the engagement recess 34. When configured to be engaged and rotated together with the key, when the key is rotated to the right, a signal is input to activate the anti-theft device at the same time as the door locks, and conversely, the door is rotated to the left. A signal can be input to release the lock and release the anti-theft device.

そして、このスイッチ１は、従来のドアロック機構など
、二方向へ回動させて異なる回路を各々制御させるとき
に用いていたスイッチ装置などに比べると、部品点数が
極めて少なくなる。したがって機構自体の簡素化が図れ
、さらにスイッチ部をユニット化できるので組み付けも
簡単になる。The switch 1 has a significantly smaller number of parts than a conventional door lock mechanism or the like, which is used to rotate in two directions to control different circuits. Therefore, the mechanism itself can be simplified, and since the switch section can be made into a unit, assembly is also simplified.

これによシ機器側のコスト低減が図れる。This allows cost reduction on the equipment side.

〈発明の効果〉 以上説明したとおシ、本考案に係るスイッチによれば、
簡単な構造で平時は中立位置に保持される二方向操作形
のスイッチが得られる。そしてスイッチ自体がユニット
化されて作られるので、機器への組み込みも簡単になシ
、作業性が向上して機器側のコスト低減が図れる。<Effects of the Invention> As explained above, according to the switch according to the present invention,
A two-way operation type switch that is kept in a neutral position during normal times can be obtained with a simple structure. Since the switch itself is manufactured as a unit, it can be easily integrated into equipment, improving workability and reducing costs on the equipment side.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の一実施例に係るスイッチの外観斜視図
、第２図は第１図の■−■線に沿う断面図、第３図は同
上スイッチのカバーを取り外して上側から見た平面図、
第４図は同上スイッチの要部分解斜視図である。 １・・・スイッチ、２・・・ケース、３・・・操作軸、
４・・・回路基板、５・・・復帰ばね、６・・・摺動接
点部ｑ１７・・・ケース本体、８・・・カバー、２３．
２４・・・弾性アーム、３１・・・カム部。 第１図Fig. 1 is an external perspective view of a switch according to an embodiment of the present invention, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 is a view of the same switch from above with the cover removed. Plan view,
FIG. 4 is an exploded perspective view of essential parts of the switch. 1...Switch, 2...Case, 3...Operation axis,
4... Circuit board, 5... Return spring, 6... Sliding contact part q17... Case body, 8... Cover, 23.
24...Elastic arm, 31...Cam section. Figure 1

Claims (1)

【特許請求の範囲】[Claims] ケースと、前記ケースに回動自在に支持されているとと
もに外周部より突出されたカム部を有する操作軸と、前
記ケース内で前記操作軸に取り付けられて一体に回転さ
れる摺動接点部材と、前記摺動接点部材の回転面に対応
して前記摺動接点部材に当接配置されているとともに前
記摺動接点部材の摺動で切り換え接続される固定接点を
設けた回路基板と、前記カム部を挾んだ両側にそれぞれ
自由端が突出された一対の片持状弾性アームを設けた復
帰ばねとを備え、前記弾性アームの弾性変形を伴なわせ
て前記操作軸が回動され、外部操作力が取り除かれると
前記弾性アームの復帰力で中立位置へ戻ることを特徴と
するスイッチ。a case; an operating shaft rotatably supported by the case and having a cam portion protruding from an outer peripheral portion; and a sliding contact member that is attached to the operating shaft within the case and rotates integrally with the operating shaft. , a circuit board provided with a fixed contact that is arranged in contact with the sliding contact member in correspondence with the rotating surface of the sliding contact member and is switched and connected by sliding of the sliding contact member; and the cam. a return spring having a pair of cantilevered elastic arms each having a protruding free end on both sides of the body, and the operating shaft is rotated with elastic deformation of the elastic arms, A switch characterized in that when the operating force is removed, the switch returns to the neutral position by the return force of the elastic arm.