JPH10125171A - Switch - Google Patents

Switch

Info

Publication number
JPH10125171A
JPH10125171A JP28406696A JP28406696A JPH10125171A JP H10125171 A JPH10125171 A JP H10125171A JP 28406696 A JP28406696 A JP 28406696A JP 28406696 A JP28406696 A JP 28406696A JP H10125171 A JPH10125171 A JP H10125171A
Authority
JP
Japan
Prior art keywords
contact
switch
plunger
spring
points
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
JP28406696A
Other languages
Japanese (ja)
Inventor
Masaji Iguchi
正司 井口
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.)
Omron Corp
Original Assignee
Omron Corp
Omron Tateisi Electronics Co
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 Omron Corp, Omron Tateisi Electronics Co filed Critical Omron Corp
Priority to JP28406696A priority Critical patent/JPH10125171A/en
Publication of JPH10125171A publication Critical patent/JPH10125171A/en
Pending legal-status Critical Current

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  • Push-Button Switches (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)

Abstract

PROBLEM TO BE SOLVED: To reduce the effect of refuse and improve reliability by bringing the moving contact point of a plunger kept in contact with the free end of a conductivity applying member into contact with a contact piece at two or more points, and bringing a fixed end into contact with the other contact piece. SOLUTION: A rod contact point 5 which is the moving contact point of a conductive material is inserted into the inner end side of an alumina plunger 4 retreatably inserted into the center of an alumina bearing 3 inserted into a resin bottomed tubular case 2 inserted into a main body case 1. The contact point 5 acted with the free end of the compression coil spring 6 of an exciting member made of a conductive metal material is kept in touch at two points in the peripheral direction of a circular contact piece 13 located at the inner end section 13 of the bearing 3. Both ends of the contact point 5 are inserted into a pair of guide grooves 16 on the inner face of the case 2 for a whirl stop. The fixed end of the spring 6 is surely kept in touch with a circular contact piece 12 arranged on a spring seat at the bottom section of the case 2 regardless of the assembling error or drift of the spring 6. The contact pieces 12, 13 are preferably connected to flexible cables 14, 15.

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、例えばガス圧の微
妙な変化をペコ板等を介して検知する場合などに好適な
高精度のスイッチに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-precision switch suitable for detecting, for example, a subtle change in gas pressure via a pedal board or the like.

【0002】[0002]

【従来の技術】図4に、この種スイッチの従来例が示さ
れている。このスイッチは、外径が数mmの本体ケース
1に、直径が約1mmのプランジャ4を軸受け3を介し
て出退自在に装備し、プランジャ4のケース内端部近く
に棒接点5を貫通装備し、プランジャ4と同心状に内装
した圧縮コイルバネ6の遊端を前記棒接点5に支持させ
て、プランジャ4を突出付勢し、また、コード30のリ
ード線31,32に接続された一対のフレキシブルケー
ブル33,34をケース内に配備して、その先端部にお
ける絶縁被覆を除去して前記棒接点5が作用する一対の
接触子35,36を形成している。
2. Description of the Related Art FIG. 4 shows a conventional example of this type of switch. In this switch, a plunger 4 having a diameter of about 1 mm is mounted on a main body case 1 having an outer diameter of several mm so as to be able to move back and forth via a bearing 3, and a bar contact 5 is provided near an inner end of the case of the plunger 4. The free end of the compression coil spring 6 housed concentrically with the plunger 4 is supported by the rod contact 5 to urge the plunger 4 to project, and a pair of lead wires 31 and 32 of the cord 30 are connected. The flexible cables 33 and 34 are arranged in a case, and the insulating coating at the distal end is removed to form a pair of contacts 35 and 36 on which the bar contacts 5 act.

【0003】このスイッチは、プランジャ4に外力が作
用しない常態では、プランジャ突出方向に付勢された棒
接点5が両接触子35,36に接触してスイッチ接点が
閉じられ、また、押し込み外力が作用してプランジャ5
がバネ6に抗して内方に僅かでも変位すると、棒接点5
が接触子35,36から離れてスイッチ接点が開かれる
よう構成されている。
In this switch, in a normal state where no external force acts on the plunger 4, the rod contact 5 urged in the plunger projecting direction comes into contact with the two contacts 35 and 36 to close the switch contact, and the pushing external force is reduced. Acting plunger 5
Is slightly displaced inward against the spring 6, the rod contact 5
Are separated from the contacts 35 and 36 to open the switch contacts.

【0004】[0004]

【発明が解決しようとする課題】上記構成のスイッチ
は、僅かな外力の作用を精度良く検知できるものである
が、棒接点が一対の接触子に2点で接触して接点の開閉
を行う構造であるために、接触点の一方にゴミ等により
接触不良が発生すると、スイッチが動作不良となるもの
であり、信頼性において改良の余地があった。
The switch having the above structure can accurately detect the action of a slight external force, but has a structure in which a bar contact contacts a pair of contacts at two points to open and close the contacts. Therefore, if contact failure occurs due to dust or the like at one of the contact points, the switch will malfunction, and there is room for improvement in reliability.

【0005】本発明は、このような点に着目してなされ
たものであって、接点構造に改良を加えることにより、
ゴミ等の影響を受けにくい信頼性の高いスイッチを提供
することを目的とする。
[0005] The present invention has been made in view of such a point, and by improving the contact structure,
An object of the present invention is to provide a highly reliable switch that is not easily affected by dust and the like.

【0006】[0006]

【課題を解決するための手段】本発明では、上述の技術
的課題を解決するために、次のように構成している。
In order to solve the above-mentioned technical problems, the present invention is configured as follows.

【0007】すなわち、請求項1に係る発明は、可動接
点を有するプランジャを、本体ケースに出退自在に装備
するとともに、付勢部材によって突出付勢し、前記プラ
ンジャの変位によってスイッチ接点を開閉するスイッチ
において、前記付勢部材を、導電材料で構成し、かつ、
その遊端を前記可動接点に当接させるとともに、その固
定端を一方の接触子に接触させ、他方の接触子を、前記
プランジャの変位によって前記可動接点が少なくとも2
点で接触あるいは離間するように構成している。
That is, according to the first aspect of the present invention, a plunger having a movable contact is mounted on a main body case so as to be able to move back and forth, and is urged by an urging member so as to open and close a switch contact by displacement of the plunger. In the switch, the biasing member is made of a conductive material, and
The free end of the movable contact is brought into contact with the movable contact, the fixed end of the movable contact is brought into contact with one of the contacts, and the other of the movable contacts is moved at least two times by the displacement of the plunger.
It is configured to contact or separate at a point.

【0008】また、請求項2に係る発明は、請求項1に
係る発明において、前記可動接点を棒接点で構成すると
ともに、前記付勢部材をバネで構成し、前記他方の接触
子は、環状に形成されてその周方向の少なくとも2点で
前記棒接点に交差接触するものである。
According to a second aspect of the present invention, in the first aspect of the present invention, the movable contact is constituted by a rod contact, the urging member is constituted by a spring, and the other contact is annular. And at least two points in the circumferential direction cross-contact with the bar contact.

【0009】また、請求項3に係る発明は、請求項1ま
たは2に係る発明において、前記接触子を、フレキシブ
ルケーブルで構成している。
According to a third aspect of the present invention, in the first or second aspect, the contact is formed of a flexible cable.

【0010】請求項1に係る発明によると、プランジャ
に外力が作用しない常態では、付勢部材による付勢力が
作用する可動接点が、他方の接触子に少なくとも2点で
接触し、両接触子が、付勢部材および可動点を介して導
通されてスイッチ接点が閉じられる。
According to the first aspect of the invention, in a normal state where no external force acts on the plunger, the movable contact on which the urging force of the urging member acts contacts the other contact at at least two points, and both contacts are in contact with each other. The switch contact is closed by conducting through the biasing member and the movable point.

【0011】ここで、もしも、可動接点が作用する他方
の接触子における少なくとも2点の接触点のうちのいづ
れかで、ゴミ等により接触不良が発生したとしても、他
の接触点での接触が正常であればスイッチ動作に不良が
発生することはない。また、プランジャが外力によって
ケース内方へ変位されると、これにに伴って可動接点が
接触子から離れてスイッチ接点が開かれる。
Here, even if a contact failure occurs due to dust or the like at one of at least two contact points of the other contact on which the movable contact acts, the contact at the other contact point is normal. Then, no failure occurs in the switch operation. Further, when the plunger is displaced inward by the external force, the movable contact separates from the contact and the switch contact is opened.

【0012】また、請求項2に係る発明によると、可動
接点を棒接点で構成し、他方の接触子を環状に形成し、
その周方向の少なくとも2点で棒接点に交差接触するの
で、確実な接触が得られる。
According to the second aspect of the present invention, the movable contact is constituted by a bar contact, and the other contact is formed in an annular shape.
Since at least two points in the circumferential direction cross the rod contact, a reliable contact can be obtained.

【0013】また、請求項3に係る発明によると、フレ
キシブルケーブルの導電パターンは任意の形状に形成で
きるので、その一部の絶縁被覆を除去することで得られ
る接触子も、任意の形状パターンに形成できる。
According to the third aspect of the present invention, since the conductive pattern of the flexible cable can be formed in any shape, the contact obtained by removing a part of the insulating coating can be formed in any shape pattern. Can be formed.

【0014】[0014]

【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて説明する。
Embodiments of the present invention will be described below with reference to the drawings.

【0015】図1に、本発明に係るスイッチの断面図
が、また、図2にその接点構造が示されている。このス
イッチは、ステンレス鋼などの金属材からなる筒状の本
体ケース1、本体ケース1の一端から挿入される樹脂製
の有底筒ケース2、この有底筒ケース2の開口部に嵌入
されるアルミナ製の軸受け3、この軸受け3の中心に出
退自在に挿通装着される直径が約1mmのアルミナ製の
プランジヤ4、プランジャ4の内端側に貫通された導電
材からなる可動接点としての棒接点5、有底筒ケース2
の内部に組み込まれて棒接点5に遊端が作用する導電金
属材からなる付勢部材としての圧縮コイルバネ6、配線
用のコード7、本体ケース1に嵌入されるパッキン8、
押さえ板9、などを備えており、コード7のリード線1
0,11に接続された接触子12,13が有底筒ケース
2の底部と軸受け3の内端部に配備されている。
FIG. 1 is a sectional view of a switch according to the present invention, and FIG. 2 shows a contact structure thereof. This switch is a cylindrical main body case 1 made of a metal material such as stainless steel, a bottomed cylindrical case 2 made of resin inserted from one end of the main body case 1, and fitted into an opening of the bottomed cylindrical case 2. Alumina bearing 3, Alumina plunger 4 having a diameter of about 1 mm, which is inserted through the center of bearing 3 so as to be able to move back and forth, and a rod as a movable contact made of a conductive material penetrated through the inner end side of plunger 4. Contact 5, bottomed cylinder case 2
A compression coil spring 6 as an urging member made of a conductive metal material and having a free end acting on a bar contact 5 incorporated in the inside of the body, a cord 7 for wiring, a packing 8 fitted into the main body case 1,
A holding plate 9 is provided, and the lead wire 1 of the cord 7 is provided.
Contacts 12 and 13 connected to 0 and 11 are provided at the bottom of the bottomed cylindrical case 2 and at the inner end of the bearing 3.

【0016】前記接触子12,13は、フレキシブルケ
ーブル14,15の端部における絶縁被覆を除去して形
成されたものであり、有底筒ケース2の底部にある一方
の接触子12はバネ受け座部に配備され、圧縮コイルバ
ネ6の固定端を受ける環状の接触子に構成されている。
The contacts 12, 13 are formed by removing the insulating coating on the ends of the flexible cables 14, 15, and one of the contacts 12, located at the bottom of the bottomed cylindrical case 2, has a spring receiver. An annular contact is provided on the seat and receives the fixed end of the compression coil spring 6.

【0017】このように、圧縮コイルバネ6の固定端を
環状の接触子12に接触支持させるので、バネの組付け
誤差や組付け後のずれ動きに関係なく確実な接触状態を
得ることができる。
As described above, since the fixed end of the compression coil spring 6 is supported in contact with the annular contact 12, a reliable contact state can be obtained irrespective of a spring mounting error or a displacement after the mounting.

【0018】また、軸受け3の内端部にある他方の接触
子13は、プランジヤ4を囲む矩形環状あるいは円形環
状に形成され、その周方向の2点で棒接点5が交差接触
するよう構成されている。
The other contact 13 at the inner end of the bearing 3 is formed in a rectangular ring or a circular ring surrounding the plunger 4 so that the bar contacts 5 cross each other at two points in the circumferential direction. ing.

【0019】また、図3に示すように、棒接点5の両端
が、有底筒ケース2の内面に形成された一対の案内溝1
6に係入されてプランジャ4の回り止めがなされ、棒接
点5の接触子13に対する接触位相が変化するのを阻止
している。また、プランジャ4に形成された棒接点挿通
孔17は外広がりの鼓形に形成され、挿通された棒接点
5の多少の傾動が許されて、接触子10に正しく2点で
接触するようになっている。
Further, as shown in FIG. 3, both ends of the rod contact 5 have a pair of guide grooves 1 formed on the inner surface of the bottomed cylindrical case 2.
6, the plunger 4 is stopped from rotating, and the contact phase of the bar contact 5 with respect to the contact 13 is prevented from changing. In addition, the rod contact insertion hole 17 formed in the plunger 4 is formed in the shape of an outwardly expanding drum, and the inserted rod contact 5 is allowed to slightly tilt, so that the rod contact 5 correctly contacts the contact 10 at two points. Has become.

【0020】なお、図1中の符号18,19は、スイッ
チ取付け部材20に挿通した本体ケース1を締めつけ固
定するために外嵌装着されたナット、21は弛み止め用
の歯付き座金であり、また、22は、本体ケースのコー
ド導出部位に充填したモールド樹脂である。
Numerals 18 and 19 in FIG. 1 denote nuts externally fitted to tighten and fix the main body case 1 inserted into the switch mounting member 20, and 21 denotes toothed washers for preventing loosening. Reference numeral 22 denotes a mold resin filled in a cord lead-out portion of the main body case.

【0021】本発明に係るスイッチは以上のように構成
されたものであり、プランジャ4に外力が作用しない常
態では、図1、図2、および図3(a)に示すように、
プランジャ4はバネ6によって外方に突出付勢され、バ
ネ6の遊端が作用する棒接点5が、軸受け3の内端部に
支持されている環状の接触子13に2点で接触し、両接
触子12,13が、バネ6および棒接点5を介して導通
されてスイッチ接点が閉じられる。
The switch according to the present invention is constructed as described above. In a normal state where no external force acts on the plunger 4, as shown in FIGS. 1, 2 and 3 (a),
The plunger 4 is urged outward by a spring 6, and the bar contact 5 on which the free end of the spring 6 acts contacts the annular contact 13 supported on the inner end of the bearing 3 at two points. The contacts 12 and 13 are conducted through the spring 6 and the rod contact 5 to close the switch contact.

【0022】ここで、もしも、接触子13における2点
の接触点のうちのいづれかで、ゴミ等により接触不良が
発生したとしても、他の接触点での接触が正常であれば
スイッチ動作に不良が発生することはない。また、プラ
ンジャ4に押し込み外力が作用すると、図3(b)に示
すように、プランジャ4のケース内方への変位に伴って
棒接点5が接触子13から離れてスイッチ接点が開かれ
る。
Here, even if a contact failure occurs due to dust or the like at any one of the two contact points on the contact 13, if the contact at the other contact point is normal, the switch operation is defective. Does not occur. When an external force is applied to the plunger 4 and the plunger 4 is displaced inward, the rod contact 5 is separated from the contact 13 and the switch contact is opened, as shown in FIG. 3B.

【0023】なお、この実施の形態では、棒接点5は接
触子13に2点で接触する場合を示したが、フレキシブ
ルケーブル15のプリントパターンを選択して、接触子
13の形状を複雑にすれば3点以上の接触があるように
構成することも可能であり、一層スイッチの信頼性を高
めることができる。
In this embodiment, the case where the bar contact 5 contacts the contact 13 at two points has been described. However, the print pattern of the flexible cable 15 is selected to make the shape of the contact 13 complicated. For example, it is possible to configure so that there are three or more points of contact, and the reliability of the switch can be further increased.

【0024】[0024]

【発明の効果】以上の説明から明らかなように、本発明
によれば、可動接点が少なくとも2点で接触子に接触す
るように構成したので、ゴミ等による接触不良が原因に
よるスイッチ動作不良が発生する確率が低減されて、ス
イッチの信頼性を大きく高めることができる。
As is apparent from the above description, according to the present invention, since the movable contact is configured to contact the contact at at least two points, a switch operation failure due to a contact failure due to dust or the like is eliminated. The probability of occurrence is reduced, and the reliability of the switch can be greatly increased.

【0025】また、請求項2に記載の発明によると、他
方の接触子は、環状に形成されてその周方向の少なくと
も2点で棒接点に交差接触するので、確実な接触が得ら
れる。
According to the second aspect of the present invention, the other contact is formed in an annular shape and crosses the rod contact at at least two points in the circumferential direction, so that reliable contact can be obtained.

【0026】さらに、請求項3に記載の発明によると、
フレキシブルケーブルを利用して形成する接触子は任意
に形状パターンに形成しやすく、棒接点やバネの固定端
に対応した好適な接触子を得て、信頼性の高いスッチ動
作を行わせることができる。
Further, according to the third aspect of the present invention,
A contact formed using a flexible cable can be easily formed into an arbitrary shape pattern, and a suitable contact corresponding to a rod contact or a fixed end of a spring can be obtained, and a highly reliable switch operation can be performed. .

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

【図1】本発明に係るスイッチの断面正面図である。FIG. 1 is a sectional front view of a switch according to the present invention.

【図2】本発明に係るスイッチの接点構造を示す斜視図
である。
FIG. 2 is a perspective view showing a contact structure of the switch according to the present invention.

【図3】(a)接点閉じ状態におけるスイッチの要部を
示す縦断側面図である。 (b)接点開き状態におけるスイッチの要部を示す縦断
側面図である。
FIG. 3A is a vertical sectional side view showing a main part of a switch in a contact closed state. (B) It is a longitudinal side view which shows the principal part of a switch in the contact open state.

【図4】(a)従来例のスイッチの断面正面図である。 (b)従来例のスイッチの接点構造を示す斜視図であ
る。
FIG. 4A is a cross-sectional front view of a conventional switch. (B) It is a perspective view showing the contact structure of the switch of the conventional example.

【符号の説明】[Explanation of symbols]

1 本体ケース 4 プランジャ 5 棒接点 6 バネ(圧縮コイルバネ) 12 接触子 13 接触子 14 フレキシブルケーブル 15 フレキシブルケーブル DESCRIPTION OF SYMBOLS 1 Main body case 4 Plunger 5 Rod contact 6 Spring (compression coil spring) 12 Contact 13 Contact 14 Flexible cable 15 Flexible cable

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 可動接点を有するプランジャを、本体ケ
ースに出退自在に装備するとともに、付勢部材によって
突出付勢し、前記プランジャの変位によってスイッチ接
点を開閉するスイッチにおいて、 前記付勢部材を、導電材料で構成し、かつ、その遊端を
前記可動接点に当接させるとともに、その固定端を一方
の接触子に接触させ、 他方の接触子を、前記プランジャの変位によって前記可
動接点が少なくとも2点で接触あるいは離間するように
構成したことを特徴とするスイッチ。
1. A switch in which a plunger having a movable contact is provided in a main body case so as to be able to move back and forth, and is projected and urged by an urging member to open and close a switch contact by displacement of the plunger. A conductive end, the free end of which is in contact with the movable contact, the fixed end of which is in contact with one of the contacts, and the other of which is at least movable by the displacement of the plunger. A switch characterized in that it is configured to contact or separate at two points.
【請求項2】 前記可動接点を棒接点で構成するととも
に、前記付勢部材をバネで構成し、前記他方の接触子
は、環状に形成されてその周方向の少なくとも2点で前
記棒接点に交差接触するものである請求項1記載のスイ
ッチ。
2. The movable contact is constituted by a rod contact, the urging member is constituted by a spring, and the other contact is formed in an annular shape and is formed at at least two points in the circumferential direction thereof with the rod contact. 2. The switch according to claim 1, wherein the switch makes cross contact.
【請求項3】 前記接触子が、フレキシブルケーブルで
構成される請求項1または2記載のスイッチ。
3. The switch according to claim 1, wherein the contact is formed of a flexible cable.
JP28406696A 1996-10-25 1996-10-25 Switch Pending JPH10125171A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28406696A JPH10125171A (en) 1996-10-25 1996-10-25 Switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28406696A JPH10125171A (en) 1996-10-25 1996-10-25 Switch

Publications (1)

Publication Number Publication Date
JPH10125171A true JPH10125171A (en) 1998-05-15

Family

ID=17673855

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28406696A Pending JPH10125171A (en) 1996-10-25 1996-10-25 Switch

Country Status (1)

Country Link
JP (1) JPH10125171A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005059343A1 (en) * 2003-12-18 2005-06-30 Wärtsilä Finland Oy Apparatus for detecting pressure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005059343A1 (en) * 2003-12-18 2005-06-30 Wärtsilä Finland Oy Apparatus for detecting pressure
US7360432B2 (en) 2003-12-18 2008-04-22 Wartsila Finland Oy Apparatus for detecting pressure
KR101101100B1 (en) 2003-12-18 2012-01-03 바르실라 핀랜드 오이 Apparatus for detecting pressure

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