JP4077527B2 - Electromagnetic relay and manufacturing method thereof - Google Patents

Electromagnetic relay and manufacturing method thereof Download PDF

Info

Publication number
JP4077527B2
JP4077527B2 JP13698396A JP13698396A JP4077527B2 JP 4077527 B2 JP4077527 B2 JP 4077527B2 JP 13698396 A JP13698396 A JP 13698396A JP 13698396 A JP13698396 A JP 13698396A JP 4077527 B2 JP4077527 B2 JP 4077527B2
Authority
JP
Japan
Prior art keywords
contact spring
base block
electromagnetic relay
insulator
iron core
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
JP13698396A
Other languages
Japanese (ja)
Other versions
JPH09320431A (en
Inventor
昭夫 中村
良夫 岡本
今朝文 松野
昇 藤井
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.)
Fujitsu Component Ltd
Original Assignee
Fujitsu Component 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 Fujitsu Component Ltd filed Critical Fujitsu Component Ltd
Priority to JP13698396A priority Critical patent/JP4077527B2/en
Publication of JPH09320431A publication Critical patent/JPH09320431A/en
Application granted granted Critical
Publication of JP4077527B2 publication Critical patent/JP4077527B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/041—Details concerning assembly of relays
    • H01H50/043—Details particular to miniaturised relays
    • H01H2050/044—Special measures to minimise the height of the relay

Description

【０００１】
【発明の属する技術分野】
本発明は交換機をはじめとする電子機器において基板等に高密度実装されるシーソーバランス型の電磁継電器に係り、特に低背化が可能で基板等に嵌挿される接点ばね端子の配列を高精度に規制できる電磁継電器とその製造方法に関する。
【０００２】
電子交換機のプリント板には各加入者回路に対応する電磁継電器が搭載されているが近年の加入者回路の増加に伴い、プリント板当たりの回路数を増大する手段として例えば低背化や省面積化による電磁継電器の小型化が要求されている。
【０００３】
シーソーバランス型の電磁継電器において低背化を実現する手段の一つに底面を覆うベースブロックの省略があるが、基板等に嵌挿される接点ばね端子の配列を規制しているベースブロックの省略によって端子ピッチが乱れる原因になる。
【０００４】
また、このような電磁継電器をプリント基板上にはんだ付けする際にリード部を介して電磁継電器の内部に熱が伝わり、電磁継電器を構成する部品の耐熱特性に欠陥があると動作特性を劣化させると共に端子ピッチの乱れを更に助長する。
【０００５】
そこで、低背化が可能で耐熱特性に優れ接点ばね端子の配列を高精度に規制できる電磁継電器の実現が望まれている。
【０００６】
【従来の技術】
図３は従来の電磁継電器の構造を示す分割斜視図、図４は第１のベースブロックの製造方法、図５はシーソーバランス型電磁継電器の動作原理説明図である。
【０００７】
従来の電磁継電器は図３に示す如く可動部完成体１とコイル完成体２と第１のベースブロック３とにより構成され、第１のベースブロック３に嵌挿された上部カバー４とコイル完成体２の下の第２のベースブロック５との間に封止される。
【０００８】
可動部完成体１は図示の如く一対の可動接点ばね11と可動接点ばね11の間に配置された平板状の接極子12とを有し、所定の間隔を置いて平行に並べられた可動接点ばね11と接極子12は中央に形成された絶縁体13によって一体化されている。
【０００９】
コイル完成体２は、磁極21、22が接極子12と対向するコ字状の鉄芯23と、鉄芯23がインサートモールドされたコイルボビン24と、コイルボビン24に巻回されたコイル25と、磁極21、22の間に装着された永久磁石26とにより構成されている。
【００１０】
組立に際し下方より第１のベースブロック３の内部に嵌挿されたコイル完成体２の永久磁石26が上面に露出しており、可動部完成体１がコイル完成体２に重置されたとき接極子12の中央に設けられた突起が永久磁石26の中央部に当接する。
【００１１】
第１のベースブロック３は図４に示す如く４周を取り囲む壁面を具え相対する２面が開口してなる直方体状絶縁体31と、コイル完成体２のコイル25に平行な相対する壁面にそれぞれインサートモールドされた複数の接点ばね端子を有する。
【００１２】
一端が絶縁体31の端面に露出して他端が絶縁体31の側面から突出する接点ばね端子は可動接点用の接点ばね端子32と、可動接点用の接点ばね端子32の両側に位置し可動接点ばね11の先端と対向する固定接点用の接点ばね端子33とを有する。
【００１３】
図示省略されているが相対する接点ばね端子33には固定接点が、また可動接点ばね11には可動接点が固着されており、組立に際し支承部14が接点ばね端子32に溶接され接点ばね端子32、33の他端が絶縁体31の側面と平行に折り曲げられる。
【００１４】
かかる第１のベースブロック３に上部カバー４を嵌挿しコイル完成体２の下に第２のベースブロック５を装着すると、それぞれ絶縁体31と平行な接点ばね端子32、33は第１のベースブロック３と第２のベースブロック５の間に鋏持される。
【００１５】
通常、シーソーバランス型電磁継電器と呼ばれる上記構造を有する電磁継電器の動作原理を図５に基づいて説明する。なお、同図(a) および(b) に記載された断面図は動作原理の説明を容易にするため主要部のみを抽出した模式図である。
【００１６】
図５(a) においてコイル完成体２に重置され図示省略された支承部14が接点ばね端子32に溶接された可動部完成体１は、中央に突起15を有する平板状の接極子12および両端にそれぞれ可動接点16が固着された可動接点ばね11を具えている。
【００１７】
コイル完成体２は長軸部27にコイル25が巻回され長軸部27を挟む磁極21、22の端面が接極子12に対向する鉄芯23を有し、例えば中央近傍をＮ極とすると両端がそれぞれＳ極になる平板状の永久磁石26が磁極21と22との間に装着されている。
【００１８】
図４では図示省略されているが可動接点ばね11に連なり絶縁体13の側方に突出する支承部14はアーム部が捻られており、支承部14を接点ばね端子32に溶接すると接極子12の片側先端が磁極21、22のいずれか一方に当接するよう支承される。
【００１９】
図５(a) に示す如く可動接点ばね11の可動接点16と対向させて固定接点17を具えた接点ばね端子33が配設されており、接極子12の片側先端が磁極21、22のいずれか一方に当接することによって当接側の可動接点16が固定接点17に当接する。
【００２０】
図５(c) においてコイル25に通電する前に接点間が閉じている側をブレーク側とし開いている側をメーク側とすると、コイル25への通電によりブレーク側の吸引力は実線で示す如く、またメーク側の吸引力は一点鎖線で示す如く変化する。
【００２１】
同図において破線で示されたばね負荷曲線は捻られた支承部14と可動接点ばね11によって接極子12に印加される負荷で、コイル25への通電前は永久磁石26によるブレーク側吸引力がばね負荷に勝りブレーク側接点の閉鎖状態が維持される。
【００２２】
そこでコイル25に通電するとブレーク側の吸引力を低下させてメーク側の吸引力を増大させる磁気が鉄芯23に発生し、それまで当接していた接極子12の一端が磁極から離れて図５(b) に示す如く接極子12の他端が相対する磁極に当接する。
【００２３】
図５(b) に示す如く接極子12の先端が相対する磁極に当接すると永久磁石26によるメーク側吸引力がばね負荷に勝り、その後はコイル25に印加されている電流を遮断しても復旧することなくメーク側の接点間を当接した状態が維持される。
【００２４】
【発明が解決しようとする課題】
上記の電磁継電器はコイル完成体の下に第２のベースブロックを具えており電磁継電器の低背化を阻害する要因になる。そこで先ず従来の電磁継電器から第２のベースブロックを除去することにより低背化を実現する等の試みが行われた。
【００２５】
しかし、第１のベースブロックに上部カバーを嵌挿する前の半完成体は固定前の接点ばね端子が側面に露出しており、次工程において半完成体を把持すると指先や工具が接点ばね端子に触れるため配列ピッチの乱れを助長することになる。
【００２６】
また、第１のベースブロックが４周を取り囲む壁面を具え相対する２面が開口してなる直方体状の絶縁体からなり、例えば、はんだ付けの際に熱が印加されると変形を生じて動作特性を劣化させると共に端子ピッチの乱れを更に助長する。
【００２７】
しかも、第１のベースブロックとの間に接点ばね端子を鋏持している第２のベースブロックを除去することによって、位置決め手段がなくなるため接点ばね端子の配列ピッチが乱れプリント基板への搭載が困難になるという問題があった。
【００２８】
本発明の目的は低背化が可能で耐熱特性に優れ接点ばね端子の配列を高精度に規制できる電磁継電器を提供することにある。
【００２９】
【課題を解決するための手段】
図１は本発明になる電磁継電器を示す斜視図である。なお全図を通し同じ対象物は同一記号で表している。
【００３０】
上記課題はベースブロック６と駆動部７とからなる固定部８を有し、ベースブロック６が、四方を側壁によって取り囲まれ上下２面が開口する筒状の筒状絶縁体61と、側壁から突出するよう絶縁体61にインサートモールドされた複数の接点ばね端子62、63とを具え、駆動部７が、Ｕ字状の鉄芯71がインサートモールドされてなるコイルボビン74と、コイルボビン74に巻回されたコイル75と、鉄芯71の磁極72、73間に装着された永久磁石76とを具え、駆動部７がベースブロック６の筒状絶縁体61の筒状内に嵌挿され、一体化されて固定部が形成されており、ベースブロック６と駆動部７とは、固定部８全体が樹脂モールドされた樹脂層 81 によって一体に固着されており、少なくとも、接点ばね端子62、63の頭部65、66と、接点ばね端子62、63のリード部64と、鉄芯71の磁極72、73とが、樹脂層81から突出してなる本発明の電磁継電器によって達成される。
【００３１】
このように固定部全体が樹脂層によって保護され、少なくとも、接点ばね端子の頭部と、接点ばね端子のリード部と、鉄芯の磁極とが、樹脂層から突出してなる本発明の電磁継電器は、例えば、固定部を成形金型内に装着して接点ばね端子のリード部を所定の位置に位置決めし、成形金型内に樹脂を注入することによって各接点ばね端子の配列を高精度に規制することができる。
【００３２】
しかも、成形金型内に装着し各部の位置を規制した状態で充填された樹脂によって筒状の絶縁体が補強され、プリント基板上にはんだ付けする際の熱の影響を皆無にすることができ耐熱特性が向上すると共に、従来の電磁継電器においてコイル完成体の下に設けられていた、第２のベースブロックが不要になって電磁継電器の低背化を図ることが可能になる。
【００３３】
即ち、低背化が可能で耐熱特性に優れ接点ばね端子の配列を高精度に規制できる電磁継電器を実現することができる。
【００３４】
【発明の実施の形態】
以下添付図により本発明の実施例について詳細に説明する。なお、図２は本発明になる電磁継電器の製造方法を示す図である。
【００３５】
本発明になる電磁継電器は図１(a) に示す如く、ベースブロック６と駆動部７とで構成された固定部８を具えており、ベースブロック６と駆動部７はそれぞれ従来の電磁継電器の第１のベースブロック３およびコイル完成体２に該当する。
【００３６】
即ち、ベースブロック６は図示の如く相対する２面が開口し４周が側壁により取り囲まれてなる筒状の筒状絶縁体61を具え、駆動部７が有する鉄芯に対し平行な相対する側壁にそれぞれインサートモールドされた複数の接点ばね端子を有する。
【００３７】
一端が筒状絶縁体61の端面に露出して他端が筒状絶縁体61の側面から突出する接点ばね端子は、可動接点用の接点ばね端子62と、可動接点用接点ばね端子62の両側に配置され可動接点ばねの先端と対向する固定接点用の接点ばね端子63とを有する。
【００３８】
駆動部７はＵ字状の鉄芯71がインサートモールドされ磁極72、73を上方に突出させたコイルボビン74と、コイルボビン74に巻回されたコイル75と、コイルボビン74から露出した磁極72、73の間に装着された永久磁石76とで構成されている。
【００３９】
ベースブロック６は絶縁体61の側壁によって取り囲まれた空間が駆動部７を下方から嵌挿するのに適した形状を具え、接点ばね端子62、63の他端を筒状絶縁体61側壁と平行に折り曲げ駆動部７を絶縁体61に嵌挿することで固定部８が完成する。
【００４０】
従来の電磁継電器も本発明の電磁継電器と同様にベースブロック３の絶縁体31にコイル完成体２が嵌挿されているが、本発明になる電磁継電器の特徴は比較的低温度で成形可能な樹脂層81によって固定部８全体が保護されている点にある。
【００４１】
即ち、固定部８が有する隙間に樹脂を充填し硬化させることによって図１(b) に示す如く樹脂層81が形成されており、接点ばね端子62、63の頭部65、66、およびリード部64と、鉄芯71の両磁極72、73とが樹脂層81から上下に突出している。
【００４２】
固定部８が有する隙間への樹脂の充填は例えば固定部８が装着された成形金型のキャビティに樹脂を注入して硬化させ、図１(b) に示す如く隙間に樹脂81が充填された固定部８を成形金型から取り出すインサートモールドにより行われる。
【００４３】
固定部８のインサートモールドは図２に示す如くインサートモールド用成形金型９のキャビティ91に固定部８を装着し、例えば、液晶ポリマー（liquid crystalline polymer）等の樹脂をキャビティに注入して硬化させることで完了する。
【００４４】
成形金型９のキャビティ91は図示の如く接点ばね端子62、63のリード部64に樹脂81が付着しないよう保護すると共に、接点ばね端子62、63のリード部64をそれぞれ所定の位置に位置決めする機構を具え図１(b) に示す固定部８が得られる。
【００４５】
なお、前記金型のキヤビティは接点ばね端子62の頭部65および接点ばね端子63の頭部66を保護する機構を具えており、樹脂81をキャビティに注入することによって絶縁体61の端面に露出している頭部65、66上に樹脂が付着することはない。
【００４６】
上記固定部８に装着される可動部完成体１は図３に示す如く一対の可動接点ばね11とその間に配置された接極子12を有し、所定の間隔を置き平行に並べられた可動接点ばね11と接極子12は中央に形成された絶縁体13により一体化されている。
【００４７】
絶縁体13の両側側方に一対の可動接点ばね11にそれぞれ連通する支承部14が突出しており、支承部14を固定部８に載置し固定部８が有する接点ばね端子62の頭部65に支承部14を溶接することで、本発明になる電磁継電器の組立が完了する。
【００４８】
このように固定部全体が樹脂層によって補強され、少なくとも、接点ばね端子の頭部と、接点ばね端子のリード部と、鉄芯の磁極とが、樹脂層から突出してなる本発明の電磁継電器は、例えば、固定部を成形金型内に装着して接点ばね端子のリード部を所定の位置に位置決めし、成形金型内に樹脂を注入することによって各接点ばね端子の配列を高精度に規制することができる。
【００４９】
しかも、成形金型内に装着し各部の位置を規制した状態で充填された樹脂によって筒状の絶縁体が補強され、プリント基板上にはんだ付けする際の熱の影響を皆無にすることができ耐熱特性が向上すると共に、従来の電磁継電器においてコイル完成体の下に設けられていた、第２のベースブロックが不要になって電磁継電器の低背化を図ることが可能になる。
【００５０】
即ち、低背化が可能で耐熱特性に優れ接点ばね端子の配列を高精度に規制できる電磁継電器を実現することができる。
【００５１】
【発明の効果】
上述の如く本発明によれば低背化が可能で耐熱特性に優れ接点ばね端子の配列を高精度に規制できる電磁継電器を提供することができる。
【図面の簡単な説明】
【図１】 本発明になる電磁継電器を示す斜視図である。
【図２】 本発明になる電磁継電器の製造方法を示す図である。
【図３】 従来の電磁継電器の構造を示す分割斜視図である。
【図４】 第１のベースブロックの製造方法である。
【図５】 シーソーバランス型電磁継電器の動作原理説明図である。
【符号の説明】
６ ベースブロック ７ 駆動部
８ 固定部 ９ 成形金型
61 筒状絶縁体 62、63 接点ばね端子
64 接点ばね端子のリード部 65、66 接点ばね端子の頭部
71 鉄芯 72、73 磁極
74 コイルボビン 75 コイル
76 永久磁石 81 樹脂（樹脂層）
91 キャビティ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seesaw-balanced electromagnetic relay that is mounted on a substrate or the like in an electronic device such as an exchange, and in particular, it can be reduced in height and the arrangement of contact spring terminals inserted into the substrate or the like can be made with high accuracy. The present invention relates to an electromagnetic relay that can be regulated and a manufacturing method thereof.
[0002]
The printed circuit board of the electronic exchange is equipped with an electromagnetic relay corresponding to each subscriber circuit. With the increase in the number of subscriber circuits in recent years, as means for increasing the number of circuits per printed circuit board, for example, low profile and area saving. There is a demand for miniaturization of electromagnetic relays.
[0003]
One of the means to achieve a low profile in a seesaw balance type electromagnetic relay is the omission of the base block that covers the bottom surface, but the omission of the base block that regulates the arrangement of the contact spring terminals that are inserted into the board or the like. This may cause the terminal pitch to be disturbed.
[0004]
Also, when soldering such an electromagnetic relay on a printed circuit board, heat is transferred to the inside of the electromagnetic relay through the lead portion, and if the heat resistance characteristics of the components constituting the electromagnetic relay are defective, the operating characteristics are deteriorated. At the same time, the disturbance of the terminal pitch is further promoted.
[0005]
Therefore, it is desired to realize an electromagnetic relay that can be reduced in height, has excellent heat resistance, and can regulate the arrangement of contact spring terminals with high accuracy.
[0006]
[Prior art]
FIG. 3 is a divided perspective view showing the structure of a conventional electromagnetic relay, FIG. 4 is a manufacturing method of a first base block, and FIG. 5 is an explanatory view of the operating principle of a seesaw balance type electromagnetic relay.
[0007]
As shown in FIG. 3, the conventional electromagnetic relay is composed of a movable part complete body 1, a coil complete body 2, and a first base block 3, and an upper cover 4 fitted into the first base block 3 and a coil complete body. 2 and the second base block 5 below.
[0008]
The movable part complete body 1 has a pair of movable contact springs 11 and a flat plate-like armature 12 arranged between the movable contact springs 11 as shown in the figure, and movable contacts arranged in parallel at a predetermined interval. The spring 11 and the armature 12 are integrated by an insulator 13 formed at the center.
[0009]
The completed coil 2 includes a U-shaped iron core 23 in which the magnetic poles 21 and 22 face the armature 12, a coil bobbin 24 in which the iron core 23 is insert-molded, a coil 25 wound around the coil bobbin 24, a magnetic pole And a permanent magnet 26 mounted between 21 and 22.
[0010]
When assembling, the permanent magnet 26 of the coil completed body 2 fitted and inserted into the first base block 3 from below is exposed on the upper surface, and the movable part completed body 1 is in contact with the coil completed body 2 when it is placed on top of it. A protrusion provided at the center of the pole 12 abuts on the center of the permanent magnet 26.
[0011]
As shown in FIG. 4, the first base block 3 includes a rectangular parallelepiped insulator 31 having a wall surface that surrounds four circumferences and two opposing surfaces opened, and an opposite wall surface parallel to the coil 25 of the coil complete body 2. It has a plurality of contact spring terminals which are insert molded.
[0012]
The contact spring terminals with one end exposed on the end face of the insulator 31 and the other end protruding from the side face of the insulator 31 are located on both sides of the contact spring terminal 32 for the movable contact and the contact spring terminal 32 for the movable contact. The contact spring 11 has a contact spring terminal 33 for a fixed contact facing the tip of the contact spring 11.
[0013]
Although not shown, a stationary contact is fixed to the opposing contact spring terminal 33 and a movable contact is fixed to the movable contact spring 11, and the bearing 14 is welded to the contact spring terminal 32 during assembly and the contact spring terminal 32 is fixed. 33 are bent in parallel with the side surface of the insulator 31.
[0014]
When the upper cover 4 is inserted into the first base block 3 and the second base block 5 is mounted under the coil complete body 2, the contact spring terminals 32 and 33 parallel to the insulator 31 are respectively connected to the first base block 3. 3 and the second base block 5.
[0015]
The operation principle of an electromagnetic relay having the above structure, usually called a seesaw balance type electromagnetic relay, will be described with reference to FIG. Note that the cross-sectional views shown in FIGS. 4A and 4B are schematic diagrams in which only main parts are extracted in order to facilitate explanation of the operation principle.
[0016]
In FIG. 5 (a), the movable part complete body 1 overlaid on the coil complete body 2 and not shown in the drawing is welded to the contact spring terminal 32. The movable part complete body 1 includes a flat plate-like armature 12 having a protrusion 15 at the center and A movable contact spring 11 having a movable contact 16 fixed to each end is provided.
[0017]
The complete coil body 2 has an iron core 23 in which the coil 25 is wound around the long shaft portion 27 and the end faces of the magnetic poles 21 and 22 sandwiching the long shaft portion 27 are opposed to the armature 12. A flat plate-like permanent magnet 26 whose both ends are S poles is mounted between the magnetic poles 21 and 22.
[0018]
Although not shown in FIG. 4, the arm portion of the support portion 14 that is connected to the movable contact spring 11 and projects to the side of the insulator 13 is twisted, and when the support portion 14 is welded to the contact spring terminal 32, the armature 12. Is supported so that the tip of one side thereof contacts either one of the magnetic poles 21 and 22.
[0019]
As shown in FIG. 5 (a), a contact spring terminal 33 having a fixed contact 17 is disposed opposite to the movable contact 16 of the movable contact spring 11, and one end of the armature 12 is positioned on either of the magnetic poles 21 and 22. By abutting on one of them, the movable contact 16 on the abutting side abuts on the fixed contact 17.
[0020]
In FIG. 5 (c), if the side where the contacts are closed before energizing the coil 25 is the break side and the open side is the make side, the attraction force on the break side by energizing the coil 25 is as shown by the solid line. In addition, the suction force on the make side changes as indicated by the alternate long and short dash line.
[0021]
In the figure, the spring load curve indicated by a broken line is a load applied to the armature 12 by the twisted support portion 14 and the movable contact spring 11, and before the coil 25 is energized, the break side attractive force by the permanent magnet 26 is the spring. The closed state of the break side contact is maintained over the load.
[0022]
Therefore, when the coil 25 is energized, magnetism is generated in the iron core 23 to reduce the attractive force on the break side and increase the attractive force on the make side, and one end of the armature 12 that has been in contact so far is separated from the magnetic pole. As shown in (b), the other end of the armature 12 comes into contact with the opposite magnetic pole.
[0023]
As shown in FIG. 5 (b), when the tip of the armature 12 comes into contact with the opposing magnetic pole, the make side attractive force by the permanent magnet 26 surpasses the spring load, and then the current applied to the coil 25 is cut off. The state where the contacts on the make side are in contact with each other without being restored is maintained.
[0024]
[Problems to be solved by the invention]
The above-mentioned electromagnetic relay has a second base block under the coil complete body, which becomes a factor that hinders a reduction in the height of the electromagnetic relay. Therefore, first, an attempt was made to realize a low profile by removing the second base block from the conventional electromagnetic relay.
[0025]
However, the semi-finished product before the upper cover is inserted into the first base block has the contact spring terminals before fixation exposed on the side surfaces. When the semi-finished product is gripped in the next process, the fingertips and tools are contact spring terminals. This will help to disturb the array pitch.
[0026]
In addition, the first base block is made of a rectangular parallelepiped insulator having a wall surface that surrounds four circumferences, and two opposing faces are opened. For example, when heat is applied during soldering, the first base block is deformed to operate. The characteristic is deteriorated and the disturbance of the terminal pitch is further promoted.
[0027]
In addition, by removing the second base block holding the contact spring terminal between the first base block and the positioning means is eliminated, the arrangement pitch of the contact spring terminals is disturbed and mounting on the printed circuit board is possible. There was a problem that became difficult.
[0028]
An object of the present invention is to provide an electromagnetic relay that can be reduced in height, has excellent heat resistance, and can regulate the arrangement of contact spring terminals with high accuracy.
[0029]
[Means for Solving the Problems]
FIG. 1 is a perspective view showing an electromagnetic relay according to the present invention. Throughout the drawings, the same object is represented by the same symbol.
[0030]
The above-described problem has a fixing portion 8 composed of a base block 6 and a drive portion 7, and the base block 6 is surrounded by a side wall and has a cylindrical tubular insulator 61 that is open at two upper and lower surfaces , and protrudes from the side wall. The drive unit 7 includes a coil bobbin 74 in which a U-shaped iron core 71 is insert-molded, and a plurality of contact spring terminals 62 and 63 insert-molded on the insulator 61. a coil 75, comprising a permanent magnet 76 which is mounted between the magnetic poles of the iron core 71 72 and 73, the driving unit 7 is inserted into the cylindrical inner cylindrical insulator 61 of the base block 6, are integrated The base block 6 and the drive unit 7 are integrally fixed to each other by a resin layer 81 that is resin-molded , and at least the heads of the contact spring terminals 62 and 63. 65, 66 and the lead part 64 of the contact spring terminal 62, 63, And the magnetic poles 72, 73 of the core 71 is achieved by an electromagnetic relay of the present invention formed by protruding from the resin layer 81.
[0031]
In this way, the entire fixed portion is protected by the resin layer, and at least the head of the contact spring terminal, the lead portion of the contact spring terminal, and the magnetic pole of the iron core protrude from the resin layer. For example, by mounting the fixed part in the molding die, positioning the lead part of the contact spring terminal at a predetermined position, and injecting resin into the molding die, the arrangement of the contact spring terminals is regulated with high accuracy. can do.
[0032]
Moreover, the cylindrical insulator is reinforced by the resin that is mounted in the molding die and the position of each part is regulated, so that the influence of heat when soldering on the printed circuit board can be eliminated. The heat resistance characteristics are improved, and the second base block provided under the coil complete body in the conventional electromagnetic relay is not necessary, and the height of the electromagnetic relay can be reduced.
[0033]
That is, it is possible to realize an electromagnetic relay that can be reduced in height, has excellent heat resistance, and can regulate the arrangement of contact spring terminals with high accuracy.
[0034]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, FIG. 2 is a figure which shows the manufacturing method of the electromagnetic relay which becomes this invention.
[0035]
As shown in FIG. 1 (a), the electromagnetic relay according to the present invention comprises a fixed part 8 composed of a base block 6 and a drive part 7, and each of the base block 6 and the drive part 7 is a conventional electromagnetic relay. This corresponds to the first base block 3 and the coil complete body 2.
[0036]
That is, the base block 6 includes a cylindrical cylindrical insulator 61 having two opposite surfaces opened and surrounded by four side walls as shown in the figure, and the side walls parallel to the iron core of the drive unit 7. And a plurality of contact spring terminals each insert-molded.
[0037]
The contact spring terminals having one end exposed at the end surface of the cylindrical insulator 61 and the other end protruding from the side surface of the cylindrical insulator 61 are a contact spring terminal 62 for the movable contact and both sides of the contact spring terminal 62 for the movable contact. And a contact spring terminal 63 for a fixed contact facing the tip of the movable contact spring.
[0038]
The drive unit 7 includes a coil bobbin 74 in which a U-shaped iron core 71 is insert-molded and magnetic poles 72 and 73 protrude upward, a coil 75 wound around the coil bobbin 74, and magnetic poles 72 and 73 exposed from the coil bobbin 74. It consists of a permanent magnet 76 mounted between them.
[0039]
The base block 6 has a shape in which the space surrounded by the side wall of the insulator 61 is suitable for fitting the drive unit 7 from below, and the other ends of the contact spring terminals 62 and 63 are parallel to the side wall of the cylindrical insulator 61. The fixing portion 8 is completed by inserting the bending drive portion 7 into the insulator 61.
[0040]
In the conventional electromagnetic relay, the coil complete body 2 is inserted into the insulator 31 of the base block 3 as in the electromagnetic relay of the present invention. The feature of the electromagnetic relay according to the present invention is that it can be molded at a relatively low temperature. The entire fixing portion 8 is protected by the resin layer 81.
[0041]
That is, a resin layer 81 is formed as shown in FIG. 1 (b) by filling a resin in the gap of the fixing portion 8 and curing it, and the head portions 65 and 66 of the contact spring terminals 62 and 63 and the lead portions. 64 and both magnetic poles 72 and 73 of the iron core 71 protrude vertically from the resin layer 81.
[0042]
For example, resin is filled in the gap of the fixing portion 8 by injecting the resin into the cavity of the molding die to which the fixing portion 8 is attached, and the resin 81 is filled in the gap as shown in FIG. This is performed by an insert mold for taking out the fixing portion 8 from the molding die.
[0043]
As shown in FIG. 2, the insert mold of the fixed portion 8 has the fixed portion 8 mounted in the cavity 91 of the insert mold 9 and, for example, a resin such as liquid crystalline polymer is injected into the cavity and cured. Complete with that.
[0044]
As shown in the figure, the cavity 91 of the molding die 9 protects the resin 81 from adhering to the lead portions 64 of the contact spring terminals 62 and 63, and positions the lead portions 64 of the contact spring terminals 62 and 63 at predetermined positions. A fixing portion 8 having a mechanism and shown in FIG. 1 (b) is obtained.
[0045]
The mold cavity has a mechanism for protecting the head 65 of the contact spring terminal 62 and the head 66 of the contact spring terminal 63, and is exposed to the end surface of the insulator 61 by injecting resin 81 into the cavity. The resin does not adhere to the heads 65 and 66 that are in contact.
[0046]
As shown in FIG. 3, the completed movable part 1 attached to the fixed part 8 has a pair of movable contact springs 11 and an armature 12 arranged between them, and the movable contacts arranged in parallel at a predetermined interval. The spring 11 and the armature 12 are integrated by an insulator 13 formed at the center.
[0047]
A support portion 14 communicating with the pair of movable contact springs 11 protrudes on both sides of the insulator 13, and the head portion 65 of the contact spring terminal 62 which the support portion 14 is placed on the fixed portion 8 and the fixed portion 8 has. The assembly of the electromagnetic relay according to the present invention is completed by welding the support portion 14 to the base.
[0048]
As described above, the electromagnetic relay of the present invention in which the entire fixing portion is reinforced by the resin layer, and at least the head of the contact spring terminal, the lead portion of the contact spring terminal, and the magnetic pole of the iron core protrude from the resin layer. For example, by mounting the fixed part in the molding die, positioning the lead part of the contact spring terminal at a predetermined position, and injecting resin into the molding die, the arrangement of the contact spring terminals is regulated with high accuracy. can do.
[0049]
Moreover, the cylindrical insulator is reinforced by the resin that is mounted in the molding die and the position of each part is regulated, so that the influence of heat when soldering on the printed circuit board can be eliminated. The heat resistance characteristics are improved, and the second base block provided under the coil complete body in the conventional electromagnetic relay is not necessary, and the height of the electromagnetic relay can be reduced.
[0050]
That is, it is possible to realize an electromagnetic relay that can be reduced in height, has excellent heat resistance, and can regulate the arrangement of contact spring terminals with high accuracy.
[0051]
【The invention's effect】
As described above, according to the present invention, it is possible to provide an electromagnetic relay that can be reduced in height, has excellent heat resistance, and can regulate the arrangement of contact spring terminals with high accuracy.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an electromagnetic relay according to the present invention.
FIG. 2 is a diagram showing a method for manufacturing an electromagnetic relay according to the present invention.
FIG. 3 is a divided perspective view showing the structure of a conventional electromagnetic relay.
FIG. 4 is a manufacturing method of a first base block.
FIG. 5 is a diagram illustrating the operation principle of a seesaw balance type electromagnetic relay.
[Explanation of symbols]
6 Base block 7 Drive section 8 Fixed section 9 Mold
61 Tubular insulator 62, 63 Contact spring terminal
64 Contact spring terminal lead 65, 66 Contact spring terminal head
71 Iron core 72, 73 Magnetic pole
74 Coil bobbin 75 Coil
76 Permanent magnet 81 Resin (resin layer)
91 cavity

Claims (3)

ベースブロックと駆動部とからなる固定部を有し、
該ベースブロックが、四方を側壁によって取り囲まれ上下２面が開口する筒状の筒状絶縁体と、該側壁から突出するよう該絶縁体にインサートモールドされ該側壁と平行に折り曲げられた複数の接点ばね端子とを具え、
該駆動部が、Ｕ字状の鉄芯がインサートモールドされてなるコイルボビンと、該コイルボビンに巻回されたコイルと、該鉄芯の磁極間に装着された永久磁石とを具え、該駆動部が該ベースブロックの該筒状絶縁体の筒状内に嵌挿され一体化されて固定部が形成されており、
該ベースブロックと該駆動部とは、該固定部側面には該側壁の最外面のみが露出するように該固定部全体が樹脂モールドされた樹脂層によって一体に固着されており、少なくとも、該接点ばね端子の頭部と、該接点ばね端子のリード部と、該鉄芯の磁極とが、該樹脂層から突出してなることを特徴とする電磁継電器。It has a fixed part consisting of a base block and a drive part,
The base block is surrounded by a side wall with a cylindrical cylindrical insulator having two upper and lower surfaces open, and a plurality of contacts insert-molded into the insulator so as to protrude from the side wall and bent in parallel with the side wall With spring terminals,
The drive unit includes a coil bobbin in which a U-shaped iron core is insert-molded, a coil wound around the coil bobbin, and a permanent magnet mounted between magnetic poles of the iron core. A fixed portion is formed by being inserted into and integrated into the cylindrical shape of the cylindrical insulator of the base block,
The said base block and said drive unit are fixed together by a resin layer across the fixed portion is resin-molded so that only the outermost surface of the side wall is exposed to the fixed portion side, at least, said contact An electromagnetic relay characterized in that a head portion of a spring terminal, a lead portion of the contact spring terminal, and a magnetic pole of the iron core protrude from the resin layer. 一対の可動接点ばねと該可動接点ばねの間に配置された平板状の接極子とからなり、所定の間隔を置いて平行に並べられた該可動接点ばねと該接極子とが、該可動接点ばねと該接極子との中央に形成された絶縁体によって一体化されてなる可動部が該固定部に載置されてなることを特徴とする請求項１記載の電磁継電器。  A movable contact spring and a flat plate-shaped armature disposed between the movable contact springs, and the movable contact spring and the armature arranged in parallel at a predetermined interval are arranged in the movable contact. 2. The electromagnetic relay according to claim 1, wherein a movable part integrated with an insulator formed at the center of the spring and the armature is placed on the fixed part. ベースブロックが、四方を側壁によって取り囲まれ上下２面が開口する筒状の筒状絶縁体と、該側壁から突出するよう該絶縁体にインサートモールドされ該側壁と平行に折り曲げられた複数の接点ばね端子とを具え、駆動部が、Ｕ字状の鉄芯がインサートモールドされてなるコイルボビンと、該コイルボビンに巻回されたコイルと、該鉄芯の磁極間に装着された永久磁石とを具え、該駆動部を該ベースブロックの該筒状絶縁体の筒状内に嵌挿し固定部を形成する電磁継電器の製造方法であって、
該接点ばね端子の頭部と、該接点ばね端子のリード部と、該鉄芯の磁極とに樹脂が付着しないよう保護すると共に、該接点ばね端子のリード部を所定の位置に位置決め可能な成形金型に、該固定部を装着して樹脂を注入し該固定部をインサートモールドして、該固定部側面には該側壁の最外面のみが露出するように該駆動部と該ベースブロックとを一体に固着することを特徴とする電磁継電器の製造方法。Base block comprises a cylindrical tubular insulator having an opening upper and lower two faces surrounded on all sides by the side walls, the insert molded sidewall parallel to bent the multiple contacts in the insulating body so as to protrude from the side wall A spring terminal, and a drive unit including a coil bobbin in which a U-shaped iron core is insert-molded, a coil wound around the coil bobbin, and a permanent magnet mounted between magnetic poles of the iron core. A method of manufacturing an electromagnetic relay in which the driving unit is inserted into a cylindrical shape of the cylindrical insulator of the base block to form a fixing unit,
Molding that protects resin from adhering to the head of the contact spring terminal, the lead portion of the contact spring terminal, and the magnetic pole of the iron core, and can position the lead portion of the contact spring terminal at a predetermined position The fixing part is attached to the mold, resin is injected, the fixing part is insert-molded, and the driving part and the base block are attached so that only the outermost surface of the side wall is exposed on the side of the fixing part. A method of manufacturing an electromagnetic relay, wherein the electromagnetic relay is fixed integrally.
JP13698396A 1996-05-30 1996-05-30 Electromagnetic relay and manufacturing method thereof Expired - Lifetime JP4077527B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13698396A JP4077527B2 (en) 1996-05-30 1996-05-30 Electromagnetic relay and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13698396A JP4077527B2 (en) 1996-05-30 1996-05-30 Electromagnetic relay and manufacturing method thereof

Publications (2)

Publication Number Publication Date
JPH09320431A JPH09320431A (en) 1997-12-12
JP4077527B2 true JP4077527B2 (en) 2008-04-16

Family

ID=15188038

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13698396A Expired - Lifetime JP4077527B2 (en) 1996-05-30 1996-05-30 Electromagnetic relay and manufacturing method thereof

Country Status (1)

Country Link
JP (1) JP4077527B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10084279B3 (en) * 1999-12-24 2013-04-25 Takamisawa Electric Co. Ltd. Method for producing an exchange relay

Also Published As

Publication number Publication date
JPH09320431A (en) 1997-12-12

Similar Documents

Publication Publication Date Title
US6084281A (en) Planar magnetic motor and magnetic microactuator comprising a motor of this type
JP3870049B2 (en) Electromagnetic relay device
EP1772884B1 (en) Electromagnetic relay
EP1174896B1 (en) Electromagnetic relay
EP0293199B1 (en) Electromagnetic relay
US7135946B2 (en) Electromagnetic relay having at least one relay actuator and a receptacle for relay actuators
JP3502591B2 (en) Actuator
JPH05314885A (en) Electromagnetic relay
JP2002334643A (en) Electricity switching element
EP0058727A1 (en) Electromagnetic relay and method of manufacturing the same
EP0901141A1 (en) Relay
JP4077527B2 (en) Electromagnetic relay and manufacturing method thereof
EP0204346B1 (en) Low profile electromagnetic relay suitable for being mounted to a printed circuit board
JP3575707B2 (en) Matrix relay
EP0122291A1 (en) Electromagnetic contactor
JP4056632B2 (en) Electromagnetic relay and manufacturing method thereof
EP0932179A2 (en) Electromagnetic relay
JP3445758B2 (en) Electromagnetic relay and manufacturing method thereof
JPH09213187A (en) Electromagnetic relay and its manufacture
JP3219416B2 (en) Electromagnetic relay
JPH0418682B2 (en)
GB2121605A (en) Improvements in or relating to electric relays
JP3119597B2 (en) Electromagnetic relay and method of manufacturing the same
KR0137922Y1 (en) Miniature transfer relay
JPH076599Y2 (en) relay

Legal Events

Date Code Title Description
A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A712

Effective date: 20031125

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20051003

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20060418

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20060616

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20070109

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20070309

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20071002

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20071127

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20080108

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20080201

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110208

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120208

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120208

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130208

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140208

Year of fee payment: 6

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term