JPH08153616A - Combination electromagnetic coil and solenoid valve - Google Patents

Combination electromagnetic coil and solenoid valve

Info

Publication number
JPH08153616A
JPH08153616A JP29606194A JP29606194A JPH08153616A JP H08153616 A JPH08153616 A JP H08153616A JP 29606194 A JP29606194 A JP 29606194A JP 29606194 A JP29606194 A JP 29606194A JP H08153616 A JPH08153616 A JP H08153616A
Authority
JP
Japan
Prior art keywords
electromagnetic coil
dovetail
bobbins
coils
electromagnetic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP29606194A
Other languages
Japanese (ja)
Inventor
Naomasa Fujiwara
直応 藤原
Kingo Kamiya
欣吾 神谷
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.)
Aisan Industry Co Ltd
Original Assignee
Aisan Industry Co 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 Aisan Industry Co Ltd filed Critical Aisan Industry Co Ltd
Priority to JP29606194A priority Critical patent/JPH08153616A/en
Publication of JPH08153616A publication Critical patent/JPH08153616A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To prevent increase in axial distance and inclination when juxtaposed electromagnetic coils are resin molded, to prevent the breaking of the wire between both coils, and also to eliminated defective sealing and malfunction of the valve of the solenoid valve. CONSTITUTION: An electromagnetic coil 3 is formed by winding an electric wire 2 on the left side bobbin 1. An electromagnetic coil 4 is formed by winding an electric wire 2 on the right side bobbin as shown in the diagram mentioned separately. Dovetail grooves 1e and 1e' are formed on the bobbin flange of the electromagnetic coil 3. Dovetail grooves 1f and 1f' are formed on the bobbin flange of the electromagnetic coil 4. The dovetails grooves 1e and 1e' are connected to the dovetail grooves 1f and 1f' and they are dovetail-jointed, and both electromagnetic coils 3 and 4 are jointed. This dovetail-joint structure prevents the increase in interaxial distance and the inclination of both coils 3 and 4 when a resin molding operation is conducted, and also the breaking of electric wire can be eliminated.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は複合電磁コイルとそれを
用いた電磁弁に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite electromagnetic coil and a solenoid valve using the same.

【0002】[0002]

【従来の技術】ボビンに電線を巻回した電磁コイルを、
2個以上並置し、樹脂にてモールド成型して複合電磁コ
イルとなし電磁弁に用いることがある。
2. Description of the Related Art An electromagnetic coil in which an electric wire is wound around a bobbin,
Two or more may be placed side by side and molded with resin to be used for a composite electromagnetic coil and a solenoid valve.

【0003】図5に示す第1の従来技術は、ボビン1、
1にそれぞれ電線2、2を巻回した第1の電磁コイル3
と第2の電磁コイル4とを並置して、両電磁コイル3と
4を樹脂でモールド成型して一つの複合電磁コイルを製
作するときの樹脂モールド成型を説明する図である。
A first conventional technique shown in FIG. 5 is a bobbin 1,
First electromagnetic coil 3 in which electric wires 2 and 2 are wound around 1 respectively
FIG. 6 is a diagram for explaining resin molding when the electromagnetic coil 3 and the second electromagnetic coil 4 are arranged side by side and both electromagnetic coils 3 and 4 are molded with resin to produce one composite electromagnetic coil.

【0004】5と6は樹脂モールド成型に使う金型の下
型と上型である。下型5の芯棒部分5aと5bに、第1
の電磁コイル3のボビン1と第2の電磁コイル4のボビ
ン1を夫々嵌合し、上方から上型6を合わせて、樹脂7
を注型してモールド成型する。
Reference numerals 5 and 6 are a lower die and an upper die of a mold used for resin molding. On the core rod portions 5a and 5b of the lower die 5, the first
The bobbin 1 of the electromagnetic coil 3 and the bobbin 1 of the second electromagnetic coil 4 are fitted together, and the upper die 6 is fitted from above to form the resin 7
Cast and mold.

【0005】こうして樹脂モールド成型された両電磁コ
イル3と4は、上下の金型5と6から外すと、図6に示
すように、一体になった複合電磁コイル8を構成する。
なお、図5で、符号9で示すのは、下型5の芯棒部分5
a、5bと電磁コイル3、4のボビン1、1との間のク
リアランスで、実際のクリアランスよりも誇張して大き
く画いてある。
When the two electromagnetic coils 3 and 4 thus resin-molded are removed from the upper and lower molds 5 and 6, they form an integrated composite electromagnetic coil 8 as shown in FIG.
In FIG. 5, reference numeral 9 indicates the core rod portion 5 of the lower die 5.
The clearance between a and 5b and the bobbins 1 and 1 of the electromagnetic coils 3 and 4 is exaggeratedly drawn larger than the actual clearance.

【0006】図7に示す第2の従来技術は、同図(a)
に樹脂モールド成型する前の段階の複合電磁コイルの状
態を、同図(b)にボビンを、同図(c)に接続金具を
示す。
The second prior art shown in FIG. 7 is shown in FIG.
The state of the composite electromagnetic coil before the resin molding is shown in FIG. 3, the bobbin is shown in FIG.

【0007】この第2の従来技術では、各ボビン1のつ
ば1aに凹穴1bを設けるとともに、コ字形で先端を折
曲げた接続金具10の先端6aをつば1aの凹穴1bに
挿嵌し、互のコイルのわたり線を接続金具10の凹部1
0bに連結したものである。
In this second prior art, a recessed hole 1b is provided in the collar 1a of each bobbin 1, and the tip 6a of the connecting metal fitting 10 having a U-shaped bent end is inserted into the recessed hole 1b of the collar 1a. , The crossover wire of the coil of each other, the recess 1 of the connection fitting 10
It is connected to 0b.

【0008】このように接続金具10で結合した電磁コ
イル3と4を、図5、図6で説明した第1の従来技術と
同様に、成型金型に入れて、樹脂モールド成型する。こ
の第2の従来技術は、実開昭59−14307号公報で
公知である。
The electromagnetic coils 3 and 4 thus joined by the connection fitting 10 are put into a molding die and resin-molded as in the first conventional technique described with reference to FIGS. 5 and 6. The second conventional technique is known from Japanese Utility Model Laid-Open No. 59-14307.

【0009】[0009]

【発明が解決しようとする課題】前記従来の技術では、
隣接する両電磁コイル3と4を絶縁するためと一体化す
るために樹脂モールド成型するときに、成型圧力(樹脂
流れ圧力)によって、ボビン同士の間隔が正確に定まら
ず、図5で説明したクリアランス9によって、両ボビン
の間隔が広がったり、両ボビンの軸線が互に傾いて平行
にならないことがある。
SUMMARY OF THE INVENTION In the above conventional technique,
When resin molding is performed to insulate and integrate both adjacent electromagnetic coils 3 and 4, the spacing between the bobbins is not accurately determined by the molding pressure (resin flow pressure), and the clearance described in FIG. Depending on 9, the space between both bobbins may be widened, or the axes of both bobbins may be inclined to each other and may not be parallel to each other.

【0010】図5と図6では、両ボビン1、1の間隔が
広がるとともに、互に傾いた状態を示している。このよ
うな広がりや傾きは図7の第2の従来技術でも生じる。
このような複合電磁コイルを電磁弁に用いると、バルブ
のシール性や作動性が悪くなるという問題点が生じる。
FIGS. 5 and 6 show a state in which the distance between the bobbins 1 and 1 is widened and the bobbins 1 and 1 are inclined to each other. Such spread and inclination also occur in the second conventional technique shown in FIG.
When such a composite electromagnetic coil is used for an electromagnetic valve, there arises a problem that the sealing property and operability of the valve deteriorate.

【0011】また、上述のように両ボビンの間隔が広が
ったり、互の軸心が傾いたりすると、両コイル間の電線
が引っ張られて、切断する虞れもあった。本発明は上記
にかんがみ、このような問題点や虞れを解消できる複合
電磁コイルと、それを用いた電磁弁を提供することを目
的とする。
Further, if the distance between both bobbins is widened or the axes of the two bobbins are tilted as described above, the electric wire between the coils may be pulled and cut. In view of the above, the present invention has an object to provide a composite electromagnetic coil capable of solving such problems and fears, and an electromagnetic valve using the same.

【0012】[0012]

【課題を解決するための手段】前記目的を達成するため
に、請求項1記載の発明は、それぞれ電線(2)を巻回
したボビン(1)を並置して絶縁性樹脂(7)で樹脂モ
ールド成型して構成する複合電磁コイル(8)におい
て、両ボビン(1)(1)のつば(1a、1a′)の互
に隣接する部分に、互に係合可能で両ボビンの軸間方向
の動きを規制するありほぞ(1e、1e′)とあり溝
(1f、1f′)とを設けて、両ボビン(1)(1)を
あり継ぎ構造で連結したことを特徴とするものである。
In order to achieve the above-mentioned object, the invention according to claim 1 is such that the bobbins (1) around which the electric wires (2) are wound are juxtaposed and the insulating resin (7) is used as the resin. In a composite electromagnetic coil (8) formed by molding, it is possible to engage mutually adjacent portions of the collars (1a, 1a ') of both bobbins (1) and (1) with each other in the axial direction of both bobbins. Are provided with dovetails (1e, 1e ') and dovetail grooves (1f, 1f') that restrict the movement of the bobbin (1) (1f), and both bobbins (1) (1) are connected by a dovetail joint structure. .

【0013】そして、請求項2記載の発明は、請求項1
記載の複合電磁コイル(8)を使用したことを特徴とす
る電磁弁である。
The invention according to claim 2 is based on claim 1.
It is an electromagnetic valve characterized by using the described composite electromagnetic coil (8).

【0014】[0014]

【作用】両ボビンがつばに形成されたありほぞとあり溝
であり継ぎされ、両ボビンの軸間方向の動きが規制され
る。
Operation: Both bobbins are jointed by the dovetail and dovetail groove formed on the collar, and the movement of both bobbins in the axial direction is restricted.

【0015】そのため、樹脂モールド成型時に両ボビン
の間隔が広がったり、両ボビンが互に傾いたりすること
が防止され、電磁コイルが正確に位置決めされる。従っ
て、この複合電磁コイルを電磁弁に用いると、バルブの
シール性や作動性が損なわれない。
Therefore, it is possible to prevent the gap between the bobbins from being widened and prevent the bobbins from tilting relative to each other during resin molding, and the electromagnetic coil is accurately positioned. Therefore, when this composite electromagnetic coil is used for an electromagnetic valve, the sealing property and operability of the valve are not impaired.

【0016】また、両コイル間の電線が引っ張られて切
断することもない。
Further, the electric wire between both coils is not pulled and cut.

【0017】[0017]

【実施例】以下、図1〜図4に基いて本発明の実施例を
説明する。図1(a)(b)は樹脂モールド成型する前
の複合電磁コイルで、ボビン1、1にそれぞれ電線2、
2を巻回した電磁コイル3、4とを有する。11はター
ミナルである。両電磁コイル3、4は軸心を並行にして
並置されている。
Embodiments of the present invention will be described below with reference to FIGS. 1 (a) and 1 (b) are composite electromagnetic coils before resin molding, in which electric wires 2 are respectively attached to bobbins 1 and 1.
2 and electromagnetic coils 3 and 4 wound around it. 11 is a terminal. Both electromagnetic coils 3 and 4 are juxtaposed with their axes parallel.

【0018】1aと1a′は両ボビン1、1の上部と下
部にそれぞれ形成されたつばで、同図(b)に明示され
ているように、図示左側のボビン1の下部のつば1a′
と、図示右側のボビン1の下部のつば1a′との互に相
対向する辺には、それぞれありほぞ1e′とあり溝1
f′とが形成されている。なお、並置された両ボビン
1、1の上部のつば1a、1aの互に隣接する辺にも同
様にありほぞ1eとあり溝1fを形成して、両者をあり
継ぎしてある(図3参照)。
1a and 1a 'are collars formed on the upper and lower portions of both bobbins 1, 1, respectively, and as shown in FIG. 1B, the lower collar 1a' of the bobbin 1 on the left side of the figure.
, And the dovetail 1e ′ and the dovetail groove 1 on the opposite sides of the lower collar 1a ′ of the bobbin 1 on the right side of the drawing, respectively.
f'is formed. In addition, the dovetail 1e and the dovetail groove 1f are similarly formed on the adjacent sides of the upper collars 1a and 1a of the juxtaposed bobbins 1 and 1 to join the dovetails (see FIG. 3). ).

【0019】これらのありほぞ1e、1e′とあり溝1
f、1f′は、あり継ぎ構造で両ボビン1、1を連結
し、こうして、両ボビン1、1の間隔は所定の寸法に維
持され、ボビン同士の互の傾きもない。
These dovetails 1e, 1e 'and dovetail groove 1
f and 1f 'connect the both bobbins 1 and 1 in a dovetail joint structure, and thus, the interval between the bobbins 1 and 1 is maintained at a predetermined size, and there is no inclination between the bobbins.

【0020】なお、図1(b)に示すように、左側の電
磁コイルのつば1a′の左辺には、前記あり溝1f′、
1fと同様のあり溝1gが、また右側の電磁コイルのつ
ば1a′の右辺には、前記ありほぞ1e′、1eと同様
のありほぞ1hが形成されている。更に、各上部のつば
1a、1aにも同様のあり溝1gとありほぞ1hが形成
され、これらのあり溝とありほぞは、電磁コイルを更に
多数並置して連結するときに役立つ。
As shown in FIG. 1 (b), the dovetail groove 1f ', on the left side of the collar 1a' of the left electromagnetic coil.
A dovetail groove 1g similar to 1f is formed, and a dovetail 1h similar to the dovetails 1e 'and 1e is formed on the right side of the collar 1a' of the right electromagnetic coil. Further, a similar dovetail groove 1g and dovetail tenon 1h are formed in each upper collar 1a, 1a, and these dovetail grooves and dovetail tenons are useful when connecting a larger number of electromagnetic coils in parallel.

【0021】このようにあり継ぎ構造で連結された両ボ
ビンを有する電磁コイルは、図2に示すように、樹脂モ
ールド用の金型5と6に装着され、電気絶縁性の樹脂7
が注入されてモールド成型される。
As shown in FIG. 2, the electromagnetic coil having both bobbins connected by the dovetail joint structure as described above is mounted on metal molds 5 and 6 for resin molding, and an electrically insulating resin 7 is used.
Is injected and molded.

【0022】図3は、樹脂モールド成型後に金型5、6
から取り出した状態の複合電磁コイル8を示す。図4
は、図3の複合電磁コイル8を組込使用した自動車のア
イドルスピードコントロール用の電磁弁で、通常アイド
ルスピードコントロールバルブ(略称ISCV)と呼ば
れるものである。
FIG. 3 shows molds 5 and 6 after resin molding.
The composite electromagnetic coil 8 in the state of being taken out from FIG. FIG.
Is an electromagnetic valve for vehicle idle speed control that incorporates the composite electromagnetic coil 8 of FIG. 3, and is usually called an idle speed control valve (abbreviated as ISCV).

【0023】同図において、1は電線2を巻回したボビ
ン、3と4は電磁コイル、8は電磁コイル3と4を絶縁
樹脂7でモールド成型した複合電磁コイル、12は電磁
コイル3のボビンの中央に挿入配設した第1の磁気コ
ア、13は電磁コイル4のボビンの中央に挿入配設した
第2の磁気コア、14は複合電磁コイルの上部に装着し
たバルブボデー、15はバルブボデー14に埋設したヨ
ーク(プレート)、16と17はそれぞれシール部材1
8、19を中央底部に備えた有底円筒形の第1と第2の
バルブ、20と21は第1と第2の入口、22は出口で
ある。
In the figure, 1 is a bobbin around which an electric wire 2 is wound, 3 and 4 are electromagnetic coils, 8 is a composite electromagnetic coil in which the electromagnetic coils 3 and 4 are molded with an insulating resin 7, and 12 is a bobbin of the electromagnetic coil 3. , A first magnetic core inserted in the center of the electromagnetic coil 4, 13 a second magnetic core inserted in the center of the bobbin of the electromagnetic coil 4, 14 a valve body mounted above the composite electromagnetic coil, and 15 a valve body. The yoke (plate) embedded in 14 is the seal member 1 and 16 and 17 are respectively.
First and second valves having a bottomed cylindrical shape with central bottoms 8 and 19, 20 and 21 are first and second inlets, and 22 is an outlet.

【0024】バルブ18はスプリング23で常時上方に
付勢されていて、第1の入口20と出口22の間を図示
のように閉じている。又、バルブ19はスプリング24
で常時上方に付勢されていて、第2の入口21と出口2
2の間を図示のように閉じている。
The valve 18 is constantly urged upward by a spring 23 and closes between the first inlet 20 and the outlet 22 as shown in the figure. Also, the valve 19 is a spring 24.
Is always urged upwards at the second inlet 21 and outlet 2
Between 2 is closed as shown.

【0025】そして、電磁コイル3が励磁されると、バ
ルブ16がスプリング23に抗して電磁力で下方に移動
して第1の入口20と出口22との間を連通する。ま
た、電磁コイル4が励磁されると、バルブ17がスプリ
ング24に抗して電磁力で下方に移動して第2の入口2
1と出口22との間を連通する。
When the electromagnetic coil 3 is excited, the valve 16 moves downward against the spring 23 by an electromagnetic force to connect the first inlet 20 and the outlet 22. When the electromagnetic coil 4 is excited, the valve 17 is moved downward by the electromagnetic force against the spring 24, and the second inlet 2
1 communicates with the outlet 22.

【0026】こうして、図4の電磁弁は空気又はガソリ
ン蒸気の流通を制御して自動車用内燃機関のアイドルス
ピードを抑制する。
Thus, the solenoid valve in FIG. 4 controls the flow of air or gasoline vapor to suppress the idle speed of the internal combustion engine for automobiles.

【0027】[0027]

【発明の効果】本発明の複合電磁コイルは上述のように
構成されているので、樹脂モールド成型するときに、電
磁コイル同士の間隔が所定値以上に広がったり、傾いた
りすることがなく、正しく位置決めされる。また両コイ
ルの電線を接続したものでは、電線が切断することも防
止できる。
EFFECT OF THE INVENTION Since the composite electromagnetic coil of the present invention is constructed as described above, when the resin molding is carried out, the distance between the electromagnetic coils does not expand beyond a predetermined value or is not tilted properly. Positioned. Further, in the case where the electric wires of both coils are connected, it is possible to prevent the electric wires from being cut.

【0028】また、この複合電磁コイルを使用した本発
明の電磁弁では、電磁コイル同士の間隔が正確に維持さ
れ、しかも相互の傾きが生じないため、バルブが円滑に
作動して、シール性、作動性が損なわれる虞れがない。
そのため、ISCVに利用すると機関のアイドル回転数
が安定する。
Further, in the electromagnetic valve of the present invention using this composite electromagnetic coil, the distance between the electromagnetic coils is maintained accurately, and there is no mutual inclination, so that the valve operates smoothly and the sealability, There is no risk of impairing operability.
Therefore, when used for ISCV, the idle speed of the engine becomes stable.

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

【図1】本発明の複合電磁コイルの実施例の要部で
(a)は正面図、(b)は下面図である。
FIG. 1A is a front view and FIG. 1B is a bottom view of essential parts of an embodiment of a composite electromagnetic coil of the present invention.

【図2】本発明の複合電磁コイルを製造する工程の樹脂
モールド成型を説明する縦断面図である。
FIG. 2 is a vertical cross-sectional view illustrating resin molding in a process of manufacturing the composite electromagnetic coil of the present invention.

【図3】本発明の複合電磁コイルの実施例の縦断面図で
ある。
FIG. 3 is a vertical sectional view of an embodiment of the composite electromagnetic coil of the present invention.

【図4】本発明の電磁弁の実施例の一部縦断正面図であ
る。
FIG. 4 is a partially longitudinal front view of the embodiment of the solenoid valve of the present invention.

【図5】従来技術の複合電磁コイルの製造工程のうち、
樹脂モールド成型を説明する縦断面図である。
FIG. 5: Of the manufacturing process of the conventional composite electromagnetic coil,
It is a longitudinal cross-sectional view explaining resin molding.

【図6】第1の従来技術の複合電磁コイルの縦断面図で
ある。
FIG. 6 is a vertical sectional view of a first conventional composite electromagnetic coil.

【図7】第2の従来技術の要部を示す図で、(a)は樹
脂モールド成型前の複合電磁コイルの斜視図、(b)は
ボビンの斜視図、(c)は接続金具の斜視図である。
7A and 7B are views showing a main part of a second conventional technique, in which FIG. 7A is a perspective view of a composite electromagnetic coil before resin molding, FIG. 7B is a perspective view of a bobbin, and FIG. It is a figure.

【符号の説明】[Explanation of symbols]

1 ボビン 1a、1a′ つば 1e、1e′ ありほぞ 1f、1f′ あり溝 2 電線 3、4 電磁コイル 7 絶縁性樹脂 8 複合電磁コイル 1 Bobbin 1a, 1a 'Collar 1e, 1e' Ari Tenon 1f, 1f 'Ari Groove 2 Electric Wire 3, 4 Electromagnetic Coil 7 Insulating Resin 8 Composite Electromagnetic Coil

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 それぞれ電線を巻回したボビンを並置し
て絶縁性樹脂で樹脂モールド成型して構成する複合電磁
コイルにおいて、 両ボビンのつばの互に隣接する部分に、互に係合可能で
両ボビンの軸間方向の動きを規制するありほぞとあり溝
とを設けて、両ボビンをあり継ぎ構造で連結したことを
特徴とする複合電磁コイル。
1. A composite electromagnetic coil comprising bobbins wound with electric wires arranged in parallel and resin-molded with an insulating resin so that mutually adjacent portions of the collars of both bobbins can be engaged with each other. A composite electromagnetic coil, characterized in that a dovetail and a dovetail groove for restricting movement of both bobbins in the axial direction are provided, and both bobbins are connected by a dovetail joint structure.
【請求項2】 請求項1記載の複合電磁コイルを使用し
たことを特徴とする電磁弁。
2. An electromagnetic valve using the composite electromagnetic coil according to claim 1.
JP29606194A 1994-11-30 1994-11-30 Combination electromagnetic coil and solenoid valve Pending JPH08153616A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29606194A JPH08153616A (en) 1994-11-30 1994-11-30 Combination electromagnetic coil and solenoid valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29606194A JPH08153616A (en) 1994-11-30 1994-11-30 Combination electromagnetic coil and solenoid valve

Publications (1)

Publication Number Publication Date
JPH08153616A true JPH08153616A (en) 1996-06-11

Family

ID=17828602

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29606194A Pending JPH08153616A (en) 1994-11-30 1994-11-30 Combination electromagnetic coil and solenoid valve

Country Status (1)

Country Link
JP (1) JPH08153616A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002541402A (en) * 1999-03-31 2002-12-03 フェスト アクツィエンゲゼルシャフト ウント コー Electromagnetic drive
JP2007116797A (en) * 2005-10-19 2007-05-10 Matsushita Electric Ind Co Ltd Motor and valve apparatus using the same
KR200468577Y1 (en) * 2011-09-07 2013-08-22 주식회사모스토 A bobbin structure of solenoid valve for a boiler

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002541402A (en) * 1999-03-31 2002-12-03 フェスト アクツィエンゲゼルシャフト ウント コー Electromagnetic drive
JP2007116797A (en) * 2005-10-19 2007-05-10 Matsushita Electric Ind Co Ltd Motor and valve apparatus using the same
JP4735182B2 (en) * 2005-10-19 2011-07-27 パナソニック株式会社 Motor and valve device using the same
KR200468577Y1 (en) * 2011-09-07 2013-08-22 주식회사모스토 A bobbin structure of solenoid valve for a boiler

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