JP4015705B2 - Electromagnetic relay - Google Patents

Electromagnetic relay Download PDF

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Publication number
JP4015705B2
JP4015705B2 JP01065993A JP1065993A JP4015705B2 JP 4015705 B2 JP4015705 B2 JP 4015705B2 JP 01065993 A JP01065993 A JP 01065993A JP 1065993 A JP1065993 A JP 1065993A JP 4015705 B2 JP4015705 B2 JP 4015705B2
Authority
JP
Japan
Prior art keywords
coil
block
end line
iron core
terminal
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.)
Expired - Lifetime
Application number
JP01065993A
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Japanese (ja)
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JPH06223695A (en
Inventor
京治 上田
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP01065993A priority Critical patent/JP4015705B2/en
Publication of JPH06223695A publication Critical patent/JPH06223695A/en
Application granted granted Critical
Publication of JP4015705B2 publication Critical patent/JP4015705B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【0001】
【産業上の利用分野】
本発明は、電磁継電器に関し、詳しくは、コイルブロックにおけるコイルの端部線の損傷を回避しようとする技術に係るものである。
【0002】
【従来の技術】
従来、図6に示すように、鉄芯2の両端部を樹脂ブロック体12′の内部にインサート成形してコイルボビンブロック24が形成され、樹脂ブロック体12′にはコイル1の端部線1aを結線する結線端子12aが突設され、鉄芯2に巻回したコイル1の端部線1aが結線端子12aに結線されるのである。
【0003】
【発明が解決しようとする課題】
ところがこのような構成のものにおいては、図6に示すように、コイル1の端部線1aが臨む樹脂ブロック体12′には端部線1aの始端よりも更に先端側にエッジ部Eが形成され、かかるエッジ部Eにおいて、端部線1aが擦られてポリウレタンのような被膜が容易に剥離し、短絡が生じ、接点開閉機能が大きく低下されるという問題があった。
【0004】
本発明はこのような問題を解消しようとするものであり、その目的とするところは、簡単な改良により、コイルの端部線が損傷されることがなく、しかして、接点開閉機能を安定化できる電磁継電器を提供するにある。
【0005】
【課題を解決するための手段】
本発明は、鉄芯2、鉄芯2に巻いたコイル1及び永久磁石3からなる電磁石ブロック14を端子27と共に合成樹脂で一体にモールドしてブロック化してあるボディブロック21を備え、コイル1への通電にて接点開閉をおこなう電磁継電器であって、鉄芯2の両端部を樹脂ブロック体12の内部にインサート成形してコイルボビンブロック24が形成され、樹脂ブロック体12には鉄芯2に巻いたコイル1の巻線部分から導出された端部線1aを結線する結線端子12aが突設され、端部線1aの先端部が結線端子12aに結線され、コイル1の端部線1aが臨む樹脂ブロック体12には、樹脂ブロック体12が端部線1aから離れる傾斜逃げ面12cが形成され、コイル1の巻線部分からの導出始端が傾斜逃げ面12cの始端部のエッジ部Eよりも端部線1aの先端側に位置して成ることを特徴とするものである。
【0006】
【作用】
コイル1の端部線1aが臨む樹脂ブロック体12には、樹脂ブロック体12が端部線1aから離れる傾斜逃げ面12cが形成され、コイル1の巻線部分からの導出始端が傾斜逃げ面12cの始端部のエッジ部Eよりも端部線1aの先端側に位置していて、コイル1の端部線1aは従来のようにエッジ部に圧接されてその被膜が剥離されるようなことがなく、端部線1aの短絡を回避し、接点開閉機能を損なうようなことがないのである。
【0007】
【実施例】
本発明の電磁継電器Aは、図1及び図2に示すように、鉄芯2、コイル1及び永久磁石3からなる電磁石ブロック14を端子27と共に合成樹脂で一体にモールドしてブロック化してある。なお、このブロックを以下ボディブロック21と呼ぶ。このボディブロック21上にブロック化された接極子4を載置した状態で、カバー13を被着して構成される。
【0008】
電磁石ブロック14は、図2に示すように、略コ字状の鉄芯2を樹脂ブロック体12としてのコイルボビン22にインサート成形することで鉄芯2にコイルボビン22を一体形成し、コイルボビン22間の鉄芯2にコイル1を巻装し、鉄芯2の両側片2a間に永久磁石3を介装して形成してある。ここで、鉄芯2の磁極部となる両側片2aの先端部は、コイルボビン22の鍔部22aから露呈させてある。また、上記永久磁石3は中央部と両端部とが異極に着磁されている。
【0009】
上記コイルボビン22の夫々の鍔部22aには、コイル1の両端を接続する結線端子12aとしての接続片25と、この接続片25と一体となった固定片26とを植設してあり、鉄芯2の両側の上面からは位置決め突起23を突設してある。
【0010】
上記電磁石ブロック14は、端子27と共に合成樹脂でモールドしてボディブロック21として一体形成される。端子27としては、基端に固定接点8,9が形成された固定接点端子27 と、基端に後述する可動接点ばね5のヒンジばね片5aが固着される固着片27aが形成された共通接点端子27 と、コイル1に通電を行うコイル端子27 とを備える。この電磁継電器Aは2回路タイプであるので、電磁石ブロック14の両側に、2本の固定接点端子27 ,2本の共通接点端子27 及び2本のコイル端子27
が夫々植設される。
【0011】
接極子4は、平板状の接極子主体4aと、この接極子主体4aに一体に取り付けられた可動接点ばね5とで構成され、接極子主体4aと可動接点ばね5とは合成樹脂でモールドして一体成形し、2回路タイプであるので、接極子主体4aの両側に2本の可動接点ばね5を設けてある。
【0012】
上記可動接点ばね5の両端には夫々可動接点6,7が固着され、中央部の一側部からヒンジばね片5aを突設してある。ヒンジばね片5aは上記共通接点端子27 の固着片27aに固着され、これにより可動接点ばね5が共通接点端子27 に電気的に接続される。
【0013】
以下、ヒンジばね片5aの構造について説明する。本実施例の電磁継電器Aでは、上記ヒンジばね片5aの可動接点ばね5からの延出部の基部を、接極子4のセンター位置、つまりは接極子主体5aの揺動支点としての突条の形成位置からずらせた位置から延出してある。そして、ヒンジばね片5aの先端を接極子4のセンター位置で共通接点端子27
の固着片27aに固着してある。
【0014】
このようにヒンジばね片5aの可動接点ばね5からの延出位置を接極子4のセンター位置からずらすと、接極子4の揺動支点の両側のばね負荷をアンバランスとすることができ、ヒンジばね片5aのばね力を、永久磁石3による接極子4を鉄芯2の磁極面に吸着させる起磁力よりも大きくすれば、永久磁石3による接極子4と鉄芯2の磁極面との間の吸着力に抗して接極子4を一定状態に復帰回動させることができる。従って、電磁継電器Aが単安定動作する。
【0015】
上記接極子4をボディブロック21の永久磁石3上に載置して、図3に示すカバー13を被嵌する。このカバー13は下面が開口する箱状であり、上面の一つのコーナ部に内部を封止するための封止部13aを形成してある。
【0016】
ところで、図1に示すように、コイル1の端部線1aが臨む樹脂ブロック体12には端部線1aの始端よりも充分に手前から端部線1aから離れる傾斜逃げ面12cが形成されている。
【0017】
このように、コイル1の端部線1aが臨む樹脂ブロック体12には端部線1aの始端よりも充分に手前から端部線1aから離れる傾斜逃げ面12cが形成されることで、コイル1の端部線1aは従来のようにエッジ部に圧接されてその被膜が剥離されるようなことがなく、端部線1aの短絡を回避し、接点開閉機能を損なうようなことがないのである。
【0018】
図5は永久磁石3を鉄芯2の側片2a,2a間にかしめ接続する作用を示していて、側片2aの内面には予め傾斜面2bを形成しておくことで、図5(a)の矢印イ方向からのかしめ接続において、その接続後においては、同図(b)に示すように、永久磁石3と側片2a間に隙間なく接続でき、隙間ができることで磁着力の低下を抑制するようにしてある。
【0019】
【発明の効果】
本発明は上述のように、コイルの端部線が臨む樹脂ブロック体には、樹脂ブロック体が端部線から離れる傾斜逃げ面が形成され、コイルの巻線部分からの導出始端が傾斜逃げ面の始端部のエッジ部よりも端部線の先端側に位置しているから、コイルの端部線は従来のようにエッジ部に圧接されてその被膜が剥離されるようなことがなく、端部線の短絡を回避し、接点開閉機能を損なうようなことがないという利点がある。
【図面の簡単な説明】
【図1】 本発明の一実施例の一部破断した斜視図である。
【図2】 同上の製造工程を示す斜視図である。
【図3】 同上の分解斜視図である。
【図4】 同上の断面図である。
【図5】 (a)は鉄芯間に永久磁石を挿合する作用説明図、(b)は挿合後の拡大側面図である。
【図6】 従来例の一部破断した斜視図である。
【符号の説明】
1 コイル
1a 端部線
2 鉄芯
3 永久磁石
12 樹脂ブロック体
12a 結線端子
12c 傾斜逃げ面
21 ボディブロック
24 コイルボビンブロック
27 端子
E エッジ部
[0001]
[Industrial application fields]
The present invention relates to an electromagnetic relay, and more particularly to a technique for avoiding damage to end wires of a coil in a coil block.
[0002]
[Prior art]
Conventionally, as shown in FIG. 6, both ends of the iron core 2 are insert-molded inside the resin block body 12 'to form a coil bobbin block 24. The end block 1a of the coil 1 is connected to the resin block body 12'. The connection terminal 12a to connect is protrudingly provided, and the end wire 1a of the coil 1 wound around the iron core 2 is connected to the connection terminal 12a.
[0003]
[Problems to be solved by the invention]
However, in such a structure, as shown in FIG. 6, an edge portion E is formed on the resin block body 12 'facing the end line 1a of the coil 1 further on the front end side than the starting end of the end line 1a. In the edge portion E, the end line 1a is rubbed, and the film such as polyurethane is easily peeled off, causing a short circuit, and the contact opening / closing function is greatly deteriorated.
[0004]
The present invention is intended to solve such problems, and the object of the present invention is to prevent the end wire of the coil from being damaged by a simple improvement, and to stabilize the contact opening / closing function. It is in providing an electromagnetic relay that can.
[0005]
[Means for Solving the Problems]
The present invention includes a body block 21 formed by integrally molding an iron magnet 2, an electromagnet block 14 formed of a coil 1 wound around the iron core 2, and a permanent magnet 3 together with a terminal 27 with a synthetic resin. The coil bobbin block 24 is formed by insert molding the both ends of the iron core 2 inside the resin block body 12, and the resin block body 12 is wound around the iron core 2. A connection terminal 12a for connecting the end wire 1a derived from the winding portion of the coil 1 is provided in a protruding manner, the tip of the end wire 1a is connected to the connection terminal 12a, and the end wire 1a of the coil 1 faces. the resin block body 12 is formed inclined flank 12c of the resin block body 12 is away from the end line 1a is, starting end of the edge of the derived starting from the winding portion of the coil 1 is inclined flank 12c It is characterized in that comprising positioned on the distal end side of the end line 1a than E.
[0006]
[Action]
The resin block body 12 facing the end line 1a of the coil 1 is formed with an inclined flank 12c from which the resin block body 12 is separated from the end line 1a, and the leading end from the winding portion of the coil 1 is the inclined flank 12c. The end line 1a of the coil 1 is positioned on the front end side of the edge part E of the starting end of the coil 1 and the end line 1a of the coil 1 is pressed against the edge part as in the prior art and the coating is peeled off. Therefore, the short circuit of the end line 1a is avoided, and the contact opening / closing function is not impaired.
[0007]
【Example】
As shown in FIGS. 1 and 2, the electromagnetic relay A of the present invention is formed by integrally molding an electromagnet block 14 composed of an iron core 2, a coil 1, and a permanent magnet 3 together with a terminal 27 with a synthetic resin. Hereinafter, this block is referred to as a body block 21. The cover 13 is attached in a state where the blocked armature 4 is placed on the body block 21.
[0008]
As shown in FIG. 2, the electromagnet block 14 is formed by insert-molding a substantially U-shaped iron core 2 into a coil bobbin 22 as a resin block body 12 to integrally form a coil bobbin 22 on the iron core 2, and between the coil bobbins 22. A coil 1 is wound around an iron core 2, and a permanent magnet 3 is interposed between both side pieces 2 a of the iron core 2. Here, the front end portions of the two side pieces 2 a serving as the magnetic pole portions of the iron core 2 are exposed from the flange portions 22 a of the coil bobbins 22. Further, the permanent magnet 3 is magnetized with a different polarity at the center and both ends.
[0009]
Each flange portion 22a of the coil bobbin 22 is provided with a connection piece 25 as a connection terminal 12a for connecting both ends of the coil 1 and a fixed piece 26 integrated with the connection piece 25. Positioning protrusions 23 are provided so as to protrude from the upper surfaces on both sides of the core 2.
[0010]
The electromagnet block 14 is molded integrally with a terminal 27 together with a terminal 27 and is integrally formed as a body block 21. The terminal 27, a fixed contact terminal 27 1 fixed contacts 8 and 9 to the base end is formed, fixed piece 27a of the hinge spring piece 5a of the movable contact spring 5 to be described later to the proximal end is secured is formed common It includes a contact terminal 27 2, and a coil terminal 27 3 for energizing the coil 1. Since this electromagnetic relay A is a two-circuit type, two fixed contact terminals 27 1 , two common contact terminals 27 2 and two coil terminals 27 3 are provided on both sides of the electromagnet block 14.
Are planted respectively.
[0011]
The armature 4 includes a plate-shaped armature main body 4a and a movable contact spring 5 integrally attached to the armature main body 4a. The armature main body 4a and the movable contact spring 5 are molded with a synthetic resin. The two movable contact point springs 5 are provided on both sides of the armature main body 4a.
[0012]
Movable contacts 6 and 7 are fixed to both ends of the movable contact spring 5, respectively, and hinge spring pieces 5a project from one side of the central portion. The hinge spring piece 5a is fixed to the fixing piece 27a of the common contact terminal 27 2, thereby the movable contact spring 5 is electrically connected to the common contact terminal 27 2.
[0013]
Hereinafter, the structure of the hinge spring piece 5a will be described. In the electromagnetic relay A of the present embodiment, the base portion of the extension portion of the hinge spring piece 5a from the movable contact spring 5 is used as the center position of the armature 4, that is, the protrusion as the swing fulcrum of the armature main body 5a. It extends from the position shifted from the formation position. The tip of the hinge spring piece 5a is connected to the common contact terminal 27 2 at the center position of the armature 4.
Are fixed to the fixing piece 27a.
[0014]
Thus, if the extension position of the hinge spring piece 5a from the movable contact spring 5 is shifted from the center position of the armature 4, the spring loads on both sides of the swing fulcrum of the armature 4 can be unbalanced. If the spring force of the spring piece 5a is made larger than the magnetomotive force that attracts the armature 4 by the permanent magnet 3 to the magnetic pole surface of the iron core 2, the space between the armature 4 by the permanent magnet 3 and the magnetic pole surface of the iron core 2 is increased. The armature 4 can be returned and rotated to a constant state against the attracting force. Therefore, the electromagnetic relay A operates monostable.
[0015]
The armature 4 is placed on the permanent magnet 3 of the body block 21, and the cover 13 shown in FIG. The cover 13 has a box shape with an open bottom surface, and a sealing portion 13a for sealing the inside is formed at one corner portion on the top surface.
[0016]
Incidentally, as shown in FIG. 1, the resin block body 12 facing the end line 1a of the coil 1 is formed with an inclined relief surface 12c that is sufficiently far from the end line 1a from the front end of the end line 1a. Yes.
[0017]
In this way, the resin block body 12 facing the end line 1a of the coil 1 is formed with the inclined flank 12c that is sufficiently far from the end line 1a from the front of the end line 1a. The end line 1a is not pressed against the edge part as in the prior art, and the coating is not peeled off, the short-circuit of the end line 1a is avoided, and the contact opening / closing function is not impaired. .
[0018]
FIG. 5 shows the action of caulking and connecting the permanent magnet 3 between the side pieces 2a, 2a of the iron core 2. By forming the inclined surface 2b in advance on the inner surface of the side piece 2a, FIG. In the caulking connection from the direction of arrow b), after the connection, as shown in FIG. 5B, the permanent magnet 3 and the side piece 2a can be connected without a gap, and the gap can reduce the magnetic adhesion force. It is trying to suppress.
[0019]
【The invention's effect】
In the present invention, as described above, the resin block body facing the end line of the coil is formed with an inclined flank surface where the resin block body is separated from the end line, and the leading end from the coil winding portion is the inclined flank surface. Since the end line of the coil is located on the tip side of the end part of the starting end of the coil, the end line of the coil is not pressed against the edge part and the coating is not peeled off as in the prior art. There is an advantage that the short circuit of the partial wire is avoided and the contact opening / closing function is not impaired.
[Brief description of the drawings]
FIG. 1 is a partially broken perspective view of an embodiment of the present invention.
FIG. 2 is a perspective view showing the same manufacturing process.
FIG. 3 is an exploded perspective view of the above.
FIG. 4 is a cross-sectional view of the above.
FIGS. 5A and 5B are diagrams for explaining the operation of inserting a permanent magnet between iron cores, and FIG. 5B is an enlarged side view after insertion.
FIG. 6 is a partially broken perspective view of a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Coil 1a End part wire 2 Iron core 3 Permanent magnet 12 Resin block body 12a Connection terminal 12c Inclined flank 21 Body block 24 Coil bobbin block 27 Terminal
E edge

Claims (1)

鉄芯、鉄芯に巻いたコイル及び永久磁石からなる電磁石ブロックを端子と共に合成樹脂で一体にモールドしてブロック化してあるボディブロックを備え、コイルへの通電にて接点開閉をおこなう電磁継電器であって、鉄芯の両端部を樹脂ブロック体の内部にインサート成形してコイルボビンブロックが形成され、樹脂ブロック体には鉄芯に巻いたコイルの巻線部分から導出された端部線を結線する結線端子が突設され、端部線の先端部が結線端子に結線され、コイルの端部線が臨む樹脂ブロック体には、樹脂ブロック体が端部線から離れる傾斜逃げ面が形成され、コイルの巻線部分からの導出始端が傾斜逃げ面の始端部のエッジ部よりも端部線の先端側に位置して成ることを特徴とする電磁継電器。  This is an electromagnetic relay that has an iron block, an electromagnet block consisting of a coil wound around the iron core and a permanent magnet, and a body block that is integrally molded with synthetic resin together with a terminal to make the block open and close by energizing the coil. Then, both ends of the iron core are insert-molded into the resin block body to form a coil bobbin block, and the resin block body is connected to the end wire derived from the coil winding portion wound around the iron core. The terminal is projected, the end of the end line is connected to the connection terminal, and the resin block body facing the end line of the coil is formed with an inclined relief surface where the resin block body is separated from the end line. An electromagnetic relay characterized in that a leading end derived from a winding portion is located closer to a tip side of an end line than an edge portion of a starting end portion of an inclined flank.
JP01065993A 1993-01-26 1993-01-26 Electromagnetic relay Expired - Lifetime JP4015705B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP01065993A JP4015705B2 (en) 1993-01-26 1993-01-26 Electromagnetic relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP01065993A JP4015705B2 (en) 1993-01-26 1993-01-26 Electromagnetic relay

Publications (2)

Publication Number Publication Date
JPH06223695A JPH06223695A (en) 1994-08-12
JP4015705B2 true JP4015705B2 (en) 2007-11-28

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JP01065993A Expired - Lifetime JP4015705B2 (en) 1993-01-26 1993-01-26 Electromagnetic relay

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JP6263904B2 (en) * 2013-08-23 2018-01-24 オムロン株式会社 Electromagnet device and electromagnetic relay using the same

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