JP4026912B2 - Electromagnetic relay - Google Patents

Electromagnetic relay Download PDF

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Publication number
JP4026912B2
JP4026912B2 JP02156598A JP2156598A JP4026912B2 JP 4026912 B2 JP4026912 B2 JP 4026912B2 JP 02156598 A JP02156598 A JP 02156598A JP 2156598 A JP2156598 A JP 2156598A JP 4026912 B2 JP4026912 B2 JP 4026912B2
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JP
Japan
Prior art keywords
contact spring
base block
insulating wall
electromagnet
fixed
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
JP02156598A
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Japanese (ja)
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JPH11213833A (en
Inventor
吉野晃生
中林孝浩
山咲幸雄
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Fujitsu Component Ltd
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Fujitsu Component Ltd
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Priority to JP02156598A priority Critical patent/JP4026912B2/en
Publication of JPH11213833A publication Critical patent/JPH11213833A/en
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Description

【0001】
【産業上の利用分野】
本発明は、電磁継電器におけるベースブロックに電磁石と接点ばねとを装着する構造に関するものである。
【0002】
【従来の技術】
一般に、電磁継電器の構造は鉄心1と、該鉄心1にコイルボビン4を介して巻回されたコイル12と、該鉄心1に固着された継鉄3と、該継鉄3にヒンジばね6によって固定され鉄心1の頭部1aに対向して設けられた接極子2とからなる電磁石13、および可動接点ばね7と固定接点ばね8とがベースブロック9に固定されて構成されている。
この種の電磁継電器において、ベースブロック9に載置される鉄心1、コイル12 、継鉄3および接極子2等から成る電磁石13の固定位置と、可動接点ばね7と固定接点ばね8の固定位置は、通常充分な絶縁性能が得られる位置に予め設定されているものである。
【0003】
【発明が解決しようとする課題】
しかしながら、図5に示す従来の構造のように、電磁石13と可動接点ばね7および固定接点ばね8との間隔を取らずに高絶縁性能をもたせようとする場合、ベースブロック9で電磁石13または可動接点ばね7と固定接点ばね8を覆うことが必要となり、このためベースブロック9が大型化し電磁継電器本体が小さくならないという問題点があった。
【0004】
【課題を解決するための手段】
本発明は、上記の問題点を解決するため、ベースブロックと、該ベースブロックに取り付けられる電磁石であって、鉄心、該鉄心に巻回されたコイル、該鉄心の一端に固着された継鉄、および該継鉄にヒンジばねによって固定され、該鉄心の他端に対向して設けられた接極子を含む電磁石と、該ベースブロックに取り付けられる接点ばねセットであって、固定接点ばねおよび可動接点ばねを含む接点ばねセットと、前記接極子と前記可動接点ばねとを相互に連結する接点駆動カードとを備えた電磁継電器において、前記ベースブロックは、前記電磁石と前記接点ばねセットとの間に介在するクランク形状の絶縁壁であって、前記コイルの側方で前記鉄心の長手方向に沿って延長される直立壁部分を含む絶縁壁と、前記絶縁壁の一方の側に設けられ、前記継鉄に係合する凸部と、前記絶縁壁の他方の側に設けられ、前記固定接点ばねおよび前記可動接点ばねのそれぞれに係合する係合孔とを備え、前記凸部及び前記係合孔が、前記ベースブロックに対する前記電磁石と前記接点ばねセットとの取付方向を、前記絶縁壁の前記直立壁部分の両面にそれぞれ直交する互いに反対の方向に制限する形状を有し、前記接点ばねセットの前記固定接点ばねおよび前記可動接点ばねは、前記ベースブロックの前記絶縁壁の高さ方向に沿って配置され、該絶縁壁は、前記直立壁部分よりも高い位置に形成されるとともに該固定接点ばねおよび該可動接点ばねよりも高い位置まで延長される上方部をさらに有することを特徴とする電磁継電器を提供する。
以下、図面を参照して、本発明の好適な実施形態を説明する。
図1乃至図4に示すように、本発明の実施形態による電磁継電器は、ベースブロック9にクランク形状の絶縁壁9a、絶縁壁上方部9bを設け、その対向する側壁面へ向かって電磁石13および可動接点ばね7と固定接点ばね8とをそれぞれ別の方向から挿入して組立られる構造の形状にし、電磁石13の継鉄3に設けた凹部3bをベースブロック9に設けた凸部9cに勘合させ、また可動接点ばね7と固定接点ばね8とをベースブロック9の係合孔9dに挿入して固定する構成にしたものである。
【0005】
図1から図4は本発明の電磁継電器の構造を示すもので、図1は本発明の電磁継電器の組立斜視図である。図2は図1の分解斜視図である。図3は本発明のベースブロックの形状構造を示すもので(a)図は正面図、(b)図は(a)図の上面から見たA−A断面図、(c)図は(a)図の上面から見たB−B断面図である。図4はベースブロックと電磁石と接点ばねの構成を示すもので(a)図は分解斜視図で(b)図はその組立斜視図である。図5は従来の構成を示すもので(a)図は分解斜視図で(b)図はその組立斜視図である。
【0006】
以下、本発明の電磁継電器を図2に基づいてその組立工程を説明すると、絶縁材料から成るコイルボビン4の鍔部4aから突出したブロック状部4bにはコイル端子5が圧入され、このコイル端子5にコイルボビン4に巻回されるコイル12の両端が接続される。なお、コイル端子5はコイルボビン4を成形する工程において同時成形により取り付けることが可能である。
【0007】
コイルボビン4の中心孔4cには、鉄心1が挿入され、該鉄心1の下部1bはL字形の継鉄3の嵌合孔3aに挿入し嵌合した後、継鉄3に固定される。接極子2の突起部2aはヒンジばね6の嵌合孔6aに挿入された後かしめられ、接極子2とヒンジばね6とが一体となって接極子組立を構成する。
【0008】
その後、継鉄3にヒンジばね6を取り付ける。この際、ヒンジばね6は継鉄3をベースブロック9に固定後、取り付けることもできる。前記の鉄心1、コイルボビン4、継鉄3、接極子2とで電磁石13を構成する。次に該電磁石13と、可動接点7aを有する可動接点ばね7と、固定接点8aを有する固定接点ばね8とを前記ベースブロック9に矢印方向へそれぞれ挿入して固定した後、カード10を接極子2と可動接点ばね7に係止して取り付ける。そして、ケース11を被せることによって電磁継電器の組立は完了する。
【0009】
次に、本発明の主要部である電磁石13と、可動接点ばね7と、固定接点ばね8およびベースブロック9の構造と、その組立手段について図3および図4に基づいて詳細に説明すると、ベースブロック9は絶縁材料より成形加工され、図3の(c)図に示すように、クランク形状の絶縁壁9a、絶縁壁上方部9bを持つものである。さらに図3の(b)図に示すように該絶縁壁9aの面と直角に対向する低部面に凸部9cを形成して、図4に示す電磁石13の継鉄3に設けてある凹部3bを前記ベースブック9の凸部9cに係止し、他方の面には係合孔9dを形成して、図4に示す可動接点ばね7と固定接点ばね8とを前記ベースブロック9の係合孔9dに挿入し係止したものである。
【0010】
これらの嵌合状態は図3の(c)図に示す如く、ベースブロック9に設けたクランク形状の絶縁壁9a、絶縁壁上方部9bに対向する面から、図4に示すように電磁石13と可動接点ばね7および固定接点ばね8とをそれぞれ挿入し係止することにより、電磁石13と各接点ばね7,8との間に沿面距離を容易かつ十分に取ることができる。
【0011】
【発明の効果】
以上の説明から明らかなように、本発明はベースブロック9にクランク形状の絶縁壁9aを設けることにより、電磁石13と可動接点ばね7および固定接点ばね8とが隣接して配置されても絶縁上の距離が十二分に大きく取れる構成と成り、さらに絶縁壁上方部9bを設けることにより、接点開閉時に発生する接点消耗粉等による絶縁劣化が少なく、小型でも高絶縁性能を有することができる。
【図面の簡単な説明】
【図1】は本発明における電磁継電器の組立斜視図である。
【図2】は本発明の電磁継電器の構造を示す分解斜視図である。
【図3】は本発明のベースブロックの形状を示すもので、(a)図は正面図、(b)図は(a)図のその上面から見たA−A断面図、(c)図は(a)図の上面から見たB−B断面図である。
【図4】は電磁石と各接点ばねとの構成を示すもので、その(a)図は分解斜視図で、(b)図はその組立斜視図である。
【図5】は従来における電磁石と接点ばねの構成を示すもので、その(a)図は分解斜視図で、(b)図はその組立斜視図である。
【符号の説明】
1・・・・鉄心
1a・・・鉄心の頭部
1b・・・鉄心の下部
2・・・・接極子
2a・・・接極子の突起部
3・・・・継鉄
3a・・・継鉄の嵌合孔
3b・・・継鉄の凹部
4・・・・コイルボビン
4a・・・コイルボビンの鍔部
4b・・・コイルボビンのブロック状部
4c・・・コイルボビンの中心孔
5・・・・コイル端子
6・・・・ヒンジばね
6・・・・ヒンジばねの嵌合孔
7・・・・可動接点ばね
7a・・・可動接点
8・・・・固定接点ばね
8a・・・固定接点
9・・・・ベースブロック
9a・・・ベースブロックに設けたクランク形状の絶縁壁
9b・・・ベースブロックに設けた絶縁壁上方部
9c・・・ベースブロックに設けた凸部
9d・・・ベースブロックに設けた係合孔
10・・・カード
11・・・ケース
12・・・コイル
13・・・電磁石
[0001]
[Industrial application fields]
The present invention relates to a structure in which an electromagnet and a contact spring are mounted on a base block in an electromagnetic relay.
[0002]
[Prior art]
In general, the structure of the electromagnetic relay includes an iron core 1, a coil 12 wound around the iron core 1 via a coil bobbin 4, a yoke 3 fixed to the iron core 1, and a hinge spring 6 fixed to the yoke 3. An electromagnet 13 including an armature 2 provided to face the head 1 a of the iron core 1, and a movable contact spring 7 and a fixed contact spring 8 are fixed to a base block 9.
In this type of electromagnetic relay, the fixed position of the electromagnet 13 composed of the iron core 1, the coil 12, the yoke 3, the armature 2 and the like mounted on the base block 9, and the fixed position of the movable contact spring 7 and the fixed contact spring 8 are fixed. Is normally set in advance at a position where sufficient insulation performance can be obtained.
[0003]
[Problems to be solved by the invention]
However, as in the case of the conventional structure shown in FIG. 5, when it is desired to provide high insulation performance without leaving the gap between the electromagnet 13 and the movable contact spring 7 and the fixed contact spring 8, the base block 9 can move the electromagnet 13. It is necessary to cover the contact spring 7 and the fixed contact spring 8, which causes a problem that the base block 9 is enlarged and the electromagnetic relay main body is not reduced.
[0004]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a base block, an electromagnet attached to the base block, an iron core, a coil wound around the iron core, a yoke fixed to one end of the iron core, An electromagnet including an armature fixed to the yoke by a hinge spring and facing the other end of the iron core; and a contact spring set attached to the base block, the fixed contact spring and the movable contact spring And a contact drive card for connecting the armature and the movable contact spring to each other. The base block is interposed between the electromagnet and the contact spring set. A crank-shaped insulating wall including an upright wall portion extending along a longitudinal direction of the iron core at a side of the coil; and provided on one side of the insulating wall A convex portion that engages with the yoke, and an engagement hole that is provided on the other side of the insulating wall and engages with each of the fixed contact spring and the movable contact spring. engaging hole is a mounting direction of the contact spring sets and said electromagnet relative to the base block, have a shape that limits in opposite directions respectively perpendicular to both surfaces of the upstanding wall portion of said insulating wall, wherein The fixed contact spring and the movable contact spring of the contact spring set are arranged along the height direction of the insulating wall of the base block, and the insulating wall is formed at a position higher than the upright wall portion. to provide an electromagnetic relay characterized by further have the upper portion which is extended to a position higher than the fixed contact springs and moving contact springs.
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 4, the electromagnetic relay according to the embodiment of the present invention includes a base block 9 provided with a crank-shaped insulating wall 9 a and an insulating wall upper portion 9 b, and an electromagnet 13 and an opposing wall surface. The movable contact spring 7 and the fixed contact spring 8 are inserted into different directions to be assembled, and the concave portion 3b provided in the yoke 3 of the electromagnet 13 is engaged with the convex portion 9c provided in the base block 9. Further, the movable contact spring 7 and the fixed contact spring 8 are inserted into the engagement holes 9d of the base block 9 and fixed.
[0005]
1 to 4 show the structure of the electromagnetic relay of the present invention, and FIG. 1 is an assembled perspective view of the electromagnetic relay of the present invention. 2 is an exploded perspective view of FIG. 3A and 3B show the shape and structure of the base block according to the present invention. FIG. 3A is a front view, FIG. 3B is a cross-sectional view taken along the line A-A in FIG. ) It is a BB sectional view seen from the upper surface of the figure. 4A and 4B show the configuration of the base block, the electromagnet, and the contact spring. FIG. 4A is an exploded perspective view and FIG. 4B is an assembled perspective view thereof. FIG. 5 shows a conventional configuration. FIG. 5A is an exploded perspective view, and FIG. 5B is an assembled perspective view thereof.
[0006]
Hereinafter, the assembly process of the electromagnetic relay of the present invention will be described with reference to FIG. 2. A coil terminal 5 is press-fitted into the block-like portion 4b protruding from the flange portion 4a of the coil bobbin 4 made of an insulating material. Both ends of the coil 12 wound around the coil bobbin 4 are connected. The coil terminal 5 can be attached by simultaneous molding in the process of molding the coil bobbin 4.
[0007]
The iron core 1 is inserted into the center hole 4 c of the coil bobbin 4, and the lower part 1 b of the iron core 1 is inserted into and fitted into the fitting hole 3 a of the L-shaped yoke 3 and then fixed to the yoke 3. The protrusion 2a of the armature 2 is caulked after being inserted into the fitting hole 6a of the hinge spring 6, and the armature 2 and the hinge spring 6 are integrated to constitute an armature assembly.
[0008]
Thereafter, the hinge spring 6 is attached to the yoke 3. At this time, the hinge spring 6 can be attached after the yoke 3 is fixed to the base block 9. The iron core 1, the coil bobbin 4, the yoke 3 and the armature 2 constitute an electromagnet 13. Next, the electromagnet 13, the movable contact spring 7 having the movable contact 7a, and the fixed contact spring 8 having the fixed contact 8a are respectively inserted into the base block 9 in the direction of the arrow and fixed, and then the card 10 is connected to the armature. 2 and the movable contact spring 7 are fixedly attached. Then, the assembly of the electromagnetic relay is completed by covering the case 11.
[0009]
Next, the structure of the electromagnet 13, the movable contact spring 7, the fixed contact spring 8 and the base block 9, and the assembly means, which are the main parts of the present invention, will be described in detail with reference to FIGS. 3 and 4. The block 9 is molded from an insulating material and has a crank-shaped insulating wall 9a and an insulating wall upper portion 9b as shown in FIG. Further, as shown in FIG. 3B, a convex portion 9c is formed on the lower surface facing the surface of the insulating wall 9a at a right angle, and the concave portion provided in the yoke 3 of the electromagnet 13 shown in FIG. 3b is engaged with the convex portion 9c of the base book 9, and an engagement hole 9d is formed on the other surface so that the movable contact spring 7 and the fixed contact spring 8 shown in FIG. It is inserted into the joint hole 9d and locked.
[0010]
These fitting states are as shown in FIG. 3C, from the surface facing the crank-shaped insulating wall 9a and the insulating wall upper portion 9b provided in the base block 9, as shown in FIG. By inserting and locking the movable contact spring 7 and the fixed contact spring 8 respectively, it is possible to easily and sufficiently provide a creepage distance between the electromagnet 13 and the contact springs 7 and 8.
[0011]
【The invention's effect】
As is apparent from the above description, the present invention provides the base block 9 with the crank-shaped insulating wall 9a so that the electromagnet 13 and the movable contact spring 7 and the fixed contact spring 8 can be insulated even if they are disposed adjacent to each other. By providing the insulating wall upper portion 9b, insulation deterioration due to contact consumable powder generated at the time of opening and closing the contact is small, and high insulation performance can be achieved even with a small size.
[Brief description of the drawings]
FIG. 1 is an assembled perspective view of an electromagnetic relay according to the present invention.
FIG. 2 is an exploded perspective view showing the structure of the electromagnetic relay of the present invention.
FIGS. 3A and 3B show the shape of the base block of the present invention. FIG. 3A is a front view, FIG. 3B is a cross-sectional view taken along the line AA in FIG. (A) It is BB sectional drawing seen from the upper surface of a figure.
FIGS. 4A and 4B show configurations of an electromagnet and contact springs, in which FIG. 4A is an exploded perspective view, and FIG. 4B is an assembled perspective view thereof.
5A and 5B show the configuration of a conventional electromagnet and contact spring, wherein FIG. 5A is an exploded perspective view and FIG. 5B is an assembled perspective view thereof.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Iron core 1a ... Iron core head 1b ... Iron core lower part 2 ... Armature 2a ... Armature protrusion 3 ... Relay 3a ... Relay Fitting hole 3b ... recessed portion 4 of the yoke ... coil bobbin 4a ... coil bobbin collar 4b ... coil bobbin block 4c ... coil bobbin center hole 5 ... coil terminal 6... Hinge spring 6... Hinge spring fitting hole 7... Movable contact spring 7 a... Movable contact 8... Fixed contact spring 8 a. Base block 9a ... Crank-shaped insulating wall 9b provided on the base block ... Insulating wall upper part 9c provided on the base block ... Convex part 9d provided on the base block ... Provided on the base block Engagement hole 10 ... card 11 ... case 12 ... coil 13 ... Magnet

Claims (1)

ベースブロックと、該ベースブロックに取り付けられる電磁石であって、鉄心、該鉄心に巻回されたコイル、該鉄心の一端に固着された継鉄、および該継鉄にヒンジばねによって固定され、該鉄心の他端に対向して設けられた接極子を含む電磁石と、該ベースブロックに取り付けられる接点ばねセットであって、固定接点ばねおよび可動接点ばねを含む接点ばねセットと、前記接極子と前記可動接点ばねとを相互に連結する接点駆動カードとを備えた電磁継電器において、
前記ベースブロックは、
前記電磁石と前記接点ばねセットとの間に介在するクランク形状の絶縁壁であって、前記コイルの側方で前記鉄心の長手方向に沿って延長される直立壁部分を含む絶縁壁と、
前記絶縁壁の一方の側に設けられ、前記継鉄に係合する凸部と、
前記絶縁壁の他方の側に設けられ、前記固定接点ばねおよび前記可動接点ばねのそれぞれに係合する係合孔とを備え、
前記凸部及び前記係合孔が、前記ベースブロックに対する前記電磁石と前記接点ばねセットとの取付方向を、前記絶縁壁の前記直立壁部分の両面にそれぞれ直交する互いに反対の方向に制限する形状を有し、
前記接点ばねセットの前記固定接点ばねおよび前記可動接点ばねは、前記ベースブロックの前記絶縁壁の高さ方向に沿って配置され、該絶縁壁は、前記直立壁部分よりも高い位置に形成されるとともに該固定接点ばねおよび該可動接点ばねよりも高い位置まで延長される上方部をさらに有すること、
を特徴とする電磁継電器。
A base block, an electromagnet attached to the base block, an iron core, a coil wound around the iron core, a yoke fixed to one end of the iron core, and a hinge spring fixed to the yoke; An electromagnet including an armature provided opposite to the other end of the contact, a contact spring set attached to the base block, the contact spring set including a fixed contact spring and a movable contact spring, the armature and the movable In an electromagnetic relay comprising a contact drive card that interconnects contact springs,
The base block is
A crank-shaped insulating wall interposed between the electromagnet and the contact spring set, the insulating wall including an upright wall portion extending along the longitudinal direction of the iron core on the side of the coil;
A convex portion provided on one side of the insulating wall and engaged with the yoke;
An engagement hole provided on the other side of the insulating wall and engaged with each of the fixed contact spring and the movable contact spring;
The convex portion and the engagement hole have a shape that restricts the mounting direction of the electromagnet and the contact spring set to the base block in opposite directions perpendicular to both surfaces of the upright wall portion of the insulating wall. Yes, and
The fixed contact spring and the movable contact spring of the contact spring set are arranged along the height direction of the insulating wall of the base block, and the insulating wall is formed at a position higher than the upright wall portion. further have the upper portion which is extended to a position higher than the fixed contact springs and moving contact springs together,
An electromagnetic relay characterized by
JP02156598A 1998-01-20 1998-01-20 Electromagnetic relay Expired - Lifetime JP4026912B2 (en)

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JP02156598A JP4026912B2 (en) 1998-01-20 1998-01-20 Electromagnetic relay

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JPH11213833A JPH11213833A (en) 1999-08-06
JP4026912B2 true JP4026912B2 (en) 2007-12-26

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JP4307182B2 (en) 2003-08-22 2009-08-05 富士通コンポーネント株式会社 Electromagnetic relay

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