JP2013016274A - Switch for lead wire connection - Google Patents

Switch for lead wire connection Download PDF

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Publication number
JP2013016274A
JP2013016274A JP2011146524A JP2011146524A JP2013016274A JP 2013016274 A JP2013016274 A JP 2013016274A JP 2011146524 A JP2011146524 A JP 2011146524A JP 2011146524 A JP2011146524 A JP 2011146524A JP 2013016274 A JP2013016274 A JP 2013016274A
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Japan
Prior art keywords
lead wire
switch
contact piece
press
lever
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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.)
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JP2011146524A
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Japanese (ja)
Inventor
Tomoyoshi Miyata
致良 宮田
Hisaya Nakayama
尚也 中山
Shinichi Tadano
真一 但野
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Mik Electronic Corp
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Mik Denshi Kohgyo Co Ltd
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Priority to JP2011146524A priority Critical patent/JP2013016274A/en
Priority to PCT/JP2012/061755 priority patent/WO2013001913A1/en
Publication of JP2013016274A publication Critical patent/JP2013016274A/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
    • H01R4/242—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members being plates having a single slot
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/22—Operating parts, e.g. handle
    • H01H21/24—Operating parts, e.g. handle biased to return to normal position upon removal of operating force
    • H01H21/28—Operating parts, e.g. handle biased to return to normal position upon removal of operating force adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift
    • H01H21/282—Operating parts, e.g. handle biased to return to normal position upon removal of operating force adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift for actuation by moving a closing member, e.g. door, cover

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  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a switch for lead wire connection capable of facilitating the assembly work.SOLUTION: The switch 1 for lead wire connection comprises a base 2, a fixed contact piece 3 provided on the base 2, a movable contact piece 5 interlocked with a lever 4 to slide on the fixed contacts 31, 32 of the fixed contact piece 3, and a pressure contact terminal 33 molded integrally with the fixed contact piece 3 and provided with a pressure contact groove 34 into which a lead wire 6 can be press fit. The lead wire 6 is brought into conduction with the pressure contact terminal 33 when it is press fit in the pressure contact groove 34.

Description

本発明は、プリンタなどのカバーの開閉を検出するために使用されるリード線接続用スイッチに関するものである。   The present invention relates to a lead wire connection switch used to detect opening and closing of a cover of a printer or the like.

従来のプリンタにおいては、カバーの開閉検出用のスイッチは、通常、カバー近傍に配置されており、本体内のメイン基板と該スイッチとの間の接続は、リード線で接続されているのが一般的である。このようなスイッチの一例としては、例えば、特許文献１の図３に記載のスイッチがあり、スイッチ５とメイン基板１０とがケーブル６を介して接続されている。ここでは、スイッチ５によりプリンタカバー１の開閉の検出を行っている状態が図示されているものの、スイッチ５とケーブル６との接続の態様が図示されていないが、ケーブルはスイッチ内部で半田付けされているのが一般的である。   In the conventional printer, the cover open / close detection switch is usually arranged near the cover, and the connection between the main board in the main body and the switch is generally connected by a lead wire. Is. As an example of such a switch, for example, there is a switch described in FIG. 3 of Patent Document 1, and the switch 5 and the main board 10 are connected via a cable 6. Here, although the state where the opening / closing of the printer cover 1 is detected by the switch 5 is illustrated, the mode of connection between the switch 5 and the cable 6 is not illustrated, but the cable is soldered inside the switch. It is common.

しかしながら、このスイッチ５はプリンタカバー１の近傍に配置されているのでスイッチのＯＮ／ＯＦＦを直接行える点では優れているものの、スイッチ５とメイン基板との間が離れているため、ケーブル６及びコネクタ７で接続する必要がある等部品点数や組み立て工数の増加、組み立て作業が煩雑になる、コスト的にも高価になるなどの欠点があった。   However, since the switch 5 is arranged in the vicinity of the printer cover 1 and is excellent in that the switch can be directly turned on / off, the switch 5 and the main board are separated from each other. There are disadvantages such as an increase in the number of parts and the number of assembling steps, complicated assembling work, and high cost.

そこで、この欠点を改善するものとして、特許文献１に記載のカバーオープンスイッチのようなものが提案された。このカバーオープンスイッチは、キャビネット上板２の一部を成形して可撓性を有するレバー状部１２とし、プリンタカバー１の裏側に設けられた突起１１で該レバー状部１２を背後から押圧することにより、プリンタカバー１の開閉を検出するように改良したものである。このような構造にしたことにより、確かに、従来必要としていたケーブルやコネクタなどが不要となり、部品点数の削減、組み立て工数の削減、組み立て作業が煩雑になる、ひいてはコストカットにも繋がる。   In order to improve this drawback, a cover open switch described in Patent Document 1 has been proposed. In this cover open switch, a part of the cabinet upper plate 2 is molded into a flexible lever-like portion 12, and the lever-like portion 12 is pressed from behind by a protrusion 11 provided on the back side of the printer cover 1. Thus, the printer cover 1 is improved to detect opening and closing. Such a structure certainly eliminates the need for conventional cables and connectors, reduces the number of parts, reduces the number of assembly steps, makes the assembly work complicated, and leads to cost reduction.

しかしながら、この改良されたカバーオープンスイッチは、プリンタ自体に新たにレバー状部１２を設ける必要があることから、プリンタ自体の改良に繋がるという新たな問題を生ずるものであった。また、このカバーオープンスイッチにおいては、プリンタカバーにより直接スイッチを押圧するわけではなく、レバー状部１２を介してスイッチを押圧することから、信頼性に関しても多少問題があり、さらに、業界的にはスイッチをプリンタカバー近傍に設けたいとする要請もある。   However, this improved cover open switch requires a new lever-like portion 12 in the printer itself, which causes a new problem that leads to an improvement in the printer itself. Further, in this cover open switch, the switch is not pressed directly by the printer cover, but the switch is pressed via the lever-like portion 12, so there is a problem with reliability. There is also a demand to install a switch near the printer cover.

特開平５−２６２０１１号公報JP-A-5-262011

本発明の目的とするところは、プリンタカバー近傍に設置しつつも、組み立て作業の簡易化を実現可能なリード線接続用スイッチを提供することにある。   An object of the present invention is to provide a lead wire connection switch that can be installed in the vicinity of a printer cover and can simplify the assembling work.

本発明は、被検出物が押圧子に作用することによりスイッチ動作を行うリード線接続用スイッチであって、ベースと、前記ベースに設けられた固定接点片と、前記押圧子に連動し前記固定接点片上を摺動する可動接点片と、前記固定接点片と一体的に成形され、リード線を圧入可能とされる圧接溝を設けた圧接端子と、を備え、前記リード線は圧接溝に圧入されると圧接端子に導通されることを特徴とする。   The present invention is a lead wire connection switch that performs a switch operation when an object to be detected acts on a pressing element, and includes a base, a fixed contact piece provided on the base, and the fixing in conjunction with the pressing element. A movable contact piece that slides on the contact piece, and a press contact terminal that is integrally formed with the fixed contact piece and that is provided with a press contact groove capable of press-fitting a lead wire, the lead wire being press-fitted into the press contact groove. Then, it is conducted to the press contact terminal.

前記リード線は被覆電線であり、前記圧接溝に圧入されると被覆が前記圧接溝により切り込まれ前記圧接端子と導通されるようにしてもよい。   The lead wire may be a covered electric wire, and when the lead wire is press-fitted into the press contact groove, the cover may be cut by the press contact groove to be electrically connected to the press contact terminal.

前記押圧子は前記可動接点片を取り付け可能な凹部を有するレバー状部材であり、前記可動接点片はＵ字形接点ばね片であってもよい。   The pressing element may be a lever-like member having a recess to which the movable contact piece can be attached, and the movable contact piece may be a U-shaped contact spring piece.

前記押圧子は前記ベースに回動可能に支持されているとともに、回動し過ぎ防止のための回動規制手段が設けられているようにしてもよい。   The pressing element may be rotatably supported by the base and may be provided with a rotation restricting means for preventing excessive rotation.

本発明のリード線接続用スイッチは、被検出物が押圧子に作用することによりスイッチ動作を行うリード線接続用スイッチであって、ベースと、前記ベースに設けられた固定接点片と、前記押圧子に連動し前記固定接点片上を摺動する可動接点片と、前記固定接点片と一体的に成形され、リード線を圧入可能とされる圧接溝を設けた圧接端子と、を備え、前記リード線は圧接溝に圧入されると圧接端子に導通されるようにした。これにより、従来のようにリード線と接続する際に半田付け作業が不要となり組み立て作業が容易になるといった効果を奏する。   The switch for connecting a lead wire of the present invention is a switch for connecting a lead wire that performs a switch operation when an object to be detected acts on a presser, and includes a base, a fixed contact piece provided on the base, and the pressing member. A movable contact piece that slides on the fixed contact piece in conjunction with a child, and a pressure contact terminal that is formed integrally with the fixed contact piece and is provided with a pressure contact groove capable of press-fitting a lead wire. When the wire is press-fitted into the press-contact groove, it is conducted to the press-contact terminal. As a result, when connecting to the lead wire as in the prior art, there is an effect that the soldering work is unnecessary and the assembling work becomes easy.

ベースを示す図であり、（ａ）は正面図、（ｂ）は上面図、（ｃ）は下面図、（ｄ）は底面図、（ｅ）は左側面図、（ｆ）は右側面図、（ｇ）は（ｆ）のＡ−Ａ線断面図である。It is a figure which shows a base, (a) is a front view, (b) is a top view, (c) is a bottom view, (d) is a bottom view, (e) is a left side view, (f) is a right side view. (G) is the sectional view on the AA line of (f). 固定接点片の正面図である。It is a front view of a fixed contact piece. レバーを示す図であり、（ａ）は正面図、（ｂ）は一部断面図である。It is a figure which shows a lever, (a) is a front view, (b) is a partial cross section figure. 可動接点片の正面図である。It is a front view of a movable contact piece. 本発明を適用したレバースイッチを示す図であり、（ａ）は正面図、（ｂ）は上面図、（ｃ）は下面図、（ｄ）左側面図、（ｅ）は右側面図である。It is a figure which shows the lever switch to which this invention is applied, (a) is a front view, (b) is a top view, (c) is a bottom view, (d) A left side view, (e) is a right side view. . レバースイッチにリード線を接続する状態を説明するための説明図である。It is explanatory drawing for demonstrating the state which connects a lead wire to a lever switch. レバースイッチの動作状態を説明するための説明図である。It is explanatory drawing for demonstrating the operation state of a lever switch.

以下、本発明を実施するための形態について、添付した図面を参照しながら詳細に説明する。なお、本実施形態においては、本発明であるリード線接続用スイッチをプリンタのプリンタカバーの開閉を検出するレバースイッチとして説明するがこれに限定されるものではない。   Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings. In the present embodiment, the lead wire connection switch according to the present invention is described as a lever switch for detecting the opening / closing of the printer cover of the printer, but the present invention is not limited to this.

図１はベースを示す図であり、（ａ）は正面図、（ｂ）は上面図、（ｃ）は下面図、（ｄ）は底面図、（ｅ）は左側面図、（ｆ）は右側面図、（ｇ）は（ｆ）のＡ−Ａ線断面図であり、図２は固定接点片の正面図であり、図３はレバーを示す図であり、（ａ）は正面図、（ｂ）は一部断面図であり、図４は可動接点片の正面図であり、図５は本発明を適用したレバースイッチを示す図であり、（ａ）は正面図、（ｂ）は上面図、（ｃ）は下面図、（ｄ）左側面図、（ｅ）は右側面図であり、図６はレバースイッチにリード線を接続する状態を説明するための説明図であり、図７はレバースイッチの動作状態を説明するための説明図である。   FIG. 1 is a view showing a base, (a) is a front view, (b) is a top view, (c) is a bottom view, (d) is a bottom view, (e) is a left side view, and (f) is a bottom view. A right side view, (g) is a cross-sectional view taken along line AA of (f), FIG. 2 is a front view of a fixed contact piece, FIG. 3 is a view showing a lever, (a) is a front view, (B) is a partial sectional view, FIG. 4 is a front view of the movable contact piece, FIG. 5 is a view showing a lever switch to which the present invention is applied, (a) is a front view, and (b) is a front view. FIG. 6 is a top view, FIG. 6C is a bottom view, FIG. 6D is a left side view, FIG. 6E is a right side view, and FIG. 6 is an explanatory diagram for explaining a state in which a lead wire is connected to the lever switch. 7 is an explanatory diagram for explaining the operating state of the lever switch.

レバースイッチ１は、ベース２、固定接点片３、レバー４及び可動接点片５からなる。   The lever switch 1 includes a base 2, a fixed contact piece 3, a lever 4 and a movable contact piece 5.

図１に示すように、ベース２は、レバー４を装着するレバー装着部２１と固定接点片３を装着する固定接点装着部２２からなる。   As shown in FIG. 1, the base 2 includes a lever mounting portion 21 for mounting the lever 4 and a fixed contact mounting portion 22 for mounting the fixed contact piece 3.

図２に示すように、固定接点片３は、可動接点部５２Ａ、５２Ｂと摺動接触する固定接点部３１、３２と、リード線６を接続する圧接端子３３からなる。   As shown in FIG. 2, the fixed contact piece 3 includes fixed contact portions 31 and 32 that are in sliding contact with the movable contact portions 52 </ b> A and 52 </ b> B, and a pressure contact terminal 33 that connects the lead wire 6.

図３に示すように、レバー４は、プリンタのプリンタカバーと当接してプリンタカバーの開閉動作に連動して操作される操作部４１と、可動接点片５を装着する可動接点片装着部４２からなる。さらに、可動接点片装着部４２は、レバー４をレバー装着部２１に回動可能に支持する支持部４３と、可動接点片５を弾性的に収容する可動接点片装着凹部４４と、可動接点片５の一端部５１を係止する可動接点片係止部４５と、レバー４が所定の位置以上に回転し過ぎないように回転を抑制する回動規制部４６、４７からなる。   As shown in FIG. 3, the lever 4 comes into contact with the printer cover of the printer and is operated in conjunction with the opening / closing operation of the printer cover, and the movable contact piece mounting portion 42 for mounting the movable contact piece 5. Become. Furthermore, the movable contact piece mounting portion 42 includes a support portion 43 that rotatably supports the lever 4 on the lever mounting portion 21, a movable contact piece mounting recess 44 that elastically accommodates the movable contact piece 5, and a movable contact piece. 5 includes a movable contact piece locking portion 45 that locks one end portion 51 and rotation restricting portions 46 and 47 that suppress the rotation so that the lever 4 does not rotate more than a predetermined position.

図４に示すように、可動接点片５は、全体がＵ字状の板バネ片であり、一端部５１からＵ字部５３で折り返され他端部５２に至り、他端部５２は、二股状に形成された可動接点部５２Ａ、５２Ｂとなっている。   As shown in FIG. 4, the movable contact piece 5 is a U-shaped leaf spring piece as a whole, folded back from one end 51 to the other end 52, and the other end 52 is bifurcated. The movable contact portions 52A and 52B are formed in a shape.

図５に示すように、本発明のレバースイッチ１は、ベース２の固定接点装着部２２に固定接点片３を装着し、レバー４の可動接点片装着凹部４４に可動接点片５を弾性的に装着し、ベース２の凹部２３にレバー４の支持部４３を挿入してレバー４を回動可能に軸支する。この状態で圧接端子３３の圧接溝３４にリード線６を挿入すると、リード線６の被覆部６２が切り込まれて、圧接端子３３と電線６１が当接し導通可能な状態になる。   As shown in FIG. 5, in the lever switch 1 of the present invention, the fixed contact piece 3 is attached to the fixed contact attachment portion 22 of the base 2, and the movable contact piece 5 is elastically attached to the movable contact piece attachment recess 44 of the lever 4. The support part 43 of the lever 4 is inserted into the recess 23 of the base 2, and the lever 4 is pivotally supported. In this state, when the lead wire 6 is inserted into the press contact groove 34 of the press contact terminal 33, the covering portion 62 of the lead wire 6 is cut, and the press contact terminal 33 and the electric wire 61 come into contact with each other and become conductive.

この接続状態を詳細に図示したのが図６である。図６に示すように、まず、ビニル、ポリエチレン、ゴムなどの絶縁体からなる被覆部６２で被覆された状態のままのリード線６を圧接端子３３上方から圧接溝３４に挿入する。この圧接溝３４の幅はリード線６より狭く設定されているので、リード線６は結果的に圧接溝３４に圧入されることになる。圧入されたリード線６は圧接端子３３により切り込まれ、電線６１から被覆部６２が剥がれ電線６１が露出する。すると、電線６１と圧接端子３３が当接し導通可能な状態となる（ＳＴＥＰ１〜ＳＴＥＰ４）。本発明はこのように構成したことによりリード線６を接続するときに従来のように被覆部を剥がし半田付けをするという作業が不要になり、作業の効率化が図れる。   FIG. 6 shows this connection state in detail. As shown in FIG. 6, first, the lead wire 6 that is still covered with the covering portion 62 made of an insulator such as vinyl, polyethylene, or rubber is inserted into the press contact groove 34 from above the press contact terminal 33. Since the width of the press contact groove 34 is set to be narrower than that of the lead wire 6, the lead wire 6 is eventually press-fitted into the press contact groove 34. The press-fitted lead wire 6 is cut by the press contact terminal 33, the covering portion 62 is peeled off from the electric wire 61, and the electric wire 61 is exposed. Then, the electric wire 61 and the press contact terminal 33 are brought into contact with each other and become conductive (STEP 1 to STEP 4). With this configuration, the present invention eliminates the conventional work of peeling off the covering portion and soldering when connecting the lead wires 6, and the work efficiency can be improved.

次に、本発明の動作説明を図７を参照して説明する。   Next, the operation of the present invention will be described with reference to FIG.

図７に示す状態において、ＯＦＦ状態では、レバー４は可動接点片５に付勢されるとともに、回動規制部４６に回動を規制されて、レバー４の操作部４１が右下方に傾斜した状態となっている。この状態から操作部４１にプリンタカバーが作用し操作部４１が右上方に持ち上げられる。すると、これに連動して可動接点部５２Ａ、５２Ｂが固定接点部３１、３２上を摺動し、レバースイッチ１はＯＮ状態に移行する。   In the state shown in FIG. 7, in the OFF state, the lever 4 is urged by the movable contact piece 5, and the rotation is restricted by the rotation restricting portion 46, so that the operation portion 41 of the lever 4 is inclined to the lower right. It is in a state. From this state, the printer cover acts on the operation unit 41 and the operation unit 41 is lifted to the upper right. Then, in conjunction with this, the movable contact portions 52A, 52B slide on the fixed contact portions 31, 32, and the lever switch 1 shifts to the ON state.

１ レバースイッチ（リード線接続用スイッチ）
２ ベース
２１ レバー装着部
２２ 固定接点装着部
２３ 凹部
３ 固定接点片
３１、３２ 固定接点部
３３ 圧接端子
３４ 圧接溝
４ レバー（押圧子）
４１ 操作部
４２ 可動接点片装着部
４３ 支持部
４４ 可動接点片装着凹部
４５ 可動接点片係止部
４６、４７ 回動規制部
５ 可動接点片
５１ 一端部
５２ 他端部
５２Ａ、５２Ｂ 可動接点部
５３ Ｕ字部
６ リード線
６１ 電線
６２ 被覆部 1 Lever switch (Lead wire connection switch)
2 Base 21 Lever mounting portion 22 Fixed contact mounting portion 23 Recessed portion 3 Fixed contact piece 31, 32 Fixed contact portion 33 Press contact terminal 34 Press contact groove 4 Lever (pressor)
DESCRIPTION OF SYMBOLS 41 Operation part 42 Movable contact piece mounting part 43 Support part 44 Movable contact piece mounting recessed part 45 Movable contact piece latching | locking part 46,47 Rotation restriction part 5 Movable contact piece 51 One end part 52 Other end part 52A, 52B Movable contact part 53 U-shaped part 6 Lead wire 61 Electric wire 62 Covering part

Claims (4)

被検出物が押圧子に作用することによりスイッチ動作を行うリード線接続用スイッチであって、
ベースと、
前記ベースに設けられた固定接点片と、
前記押圧子に連動し前記固定接点片上を摺動する可動接点片と、
前記固定接点片と一体的に成形され、リード線を圧入可能とされる圧接溝を設けた圧接端子と、を備え、
前記リード線は圧接溝に圧入されると圧接端子に導通されることを特徴とするリード線接続用スイッチ。 A lead wire connection switch that performs a switch operation when an object to be detected acts on a presser,
Base and
A fixed contact piece provided on the base;
A movable contact piece that slides on the fixed contact piece in conjunction with the pressing element;
A pressure contact terminal formed integrally with the fixed contact piece and provided with a pressure contact groove capable of press-fitting a lead wire,
The lead wire connection switch, wherein the lead wire is electrically connected to the press contact terminal when pressed into the press contact groove. 前記リード線は被覆電線であり、前記圧接溝に圧入されると被覆が前記圧接溝により切り込まれ前記圧接端子と導通されることを特徴とする請求項１に記載のリード線接続用スイッチ。   The lead wire connection switch according to claim 1, wherein the lead wire is a covered electric wire, and when the lead wire is press-fitted into the press contact groove, the cover is cut by the press contact groove and is electrically connected to the press contact terminal. 前記押圧子は前記可動接点片を取り付け可能な凹部を有するレバー状部材であり、前記可動接点片はＵ字形接点ばね片であることを特徴とする請求項１あるいは２に記載のリード線接続用スイッチ。   The lead wire connecting device according to claim 1 or 2, wherein the pressing element is a lever-like member having a recess to which the movable contact piece can be attached, and the movable contact piece is a U-shaped contact spring piece. switch. 前記押圧子は前記ベースに回動可能に支持されているとともに、回動し過ぎ防止のための回動規制手段が設けられていることを特徴とする請求項１ないし３いずれか１項に記載のリード線接続用スイッチ。   4. The pressing element according to claim 1, wherein the pressing element is rotatably supported by the base and is provided with a rotation restricting means for preventing excessive rotation. Lead wire connection switch.
JP2011146524A 2011-06-30 2011-06-30 Switch for lead wire connection Withdrawn JP2013016274A (en)

Priority Applications (2)

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JP2011146524A JP2013016274A (en) 2011-06-30 2011-06-30 Switch for lead wire connection
PCT/JP2012/061755 WO2013001913A1 (en) 2011-06-30 2012-05-08 Lead wire connection switch

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Publication number Priority date Publication date Assignee Title
JP2016127360A (en) * 2014-12-26 2016-07-11 Kddi株式会社 Communication traffic prediction method, device and program

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Publication number Priority date Publication date Assignee Title
JPH0469818U (en) * 1990-10-30 1992-06-19
JP2562331Y2 (en) * 1991-10-28 1998-02-10 株式会社サガミ電子工業 Switch device
JPH05262011A (en) * 1992-03-19 1993-10-12 Sharp Corp Cover-open switch
JPH113633A (en) * 1997-06-11 1999-01-06 Matsushita Electric Ind Co Ltd Lever switch

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