JP3105214U - Electromagnetic coil - Google Patents

Electromagnetic coil Download PDF

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JP3105214U
JP3105214U JP2004002658U JP2004002658U JP3105214U JP 3105214 U JP3105214 U JP 3105214U JP 2004002658 U JP2004002658 U JP 2004002658U JP 2004002658 U JP2004002658 U JP 2004002658U JP 3105214 U JP3105214 U JP 3105214U
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terminal
hole
electromagnetic coil
end opening
press
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悦夫 秋山
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大黒電線株式会社
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Abstract

【課題】 基板に実装した電磁コイルを除去する際に、端子が端子保持部から抜けて基板側に残ることがないため、端子の抜けによって生じる種々の問題を生じるおそれのない電磁コイルを提供する。
【解決手段】 端子3の、長尺の端子本体30から長手方向と交差する方向に突設した突起部31を、端子保持部2の、一端開口21aから圧入した端子本体30の先端部30aを他端開口21bから外方へ突出させた状態で保持する通孔21の、一端開口21a側に設けた受け部21eによって、端子本体30の圧入方向前方側から受けることで、その他端開口21b方向への抜けを防止する。
【選択図】 図1
PROBLEM TO BE SOLVED: To provide an electromagnetic coil which does not cause various problems caused by detachment of a terminal, since a terminal does not come off from a terminal holding portion and remains on a substrate side when an electromagnetic coil mounted on a substrate is removed. .
SOLUTION: A terminal 31 of a terminal body 30 is press-fitted from one end opening 21a of a terminal holding part 2 with a projecting part 31 protruding from a long terminal body 30 in a direction intersecting the longitudinal direction. By receiving from the front side of the terminal body 30 in the press-fitting direction of the terminal body 30 by the receiving portion 21e provided on the one end opening 21a side of the through hole 21 held in a state of protruding outward from the other end opening 21b, the other end opening 21b direction To prevent slippage.
[Selection diagram] Fig. 1

Description

本考案は、基板に実装して用いられる電磁コイルに関するものである。   The present invention relates to an electromagnetic coil used by being mounted on a substrate.

例えば、フィルムカメラ、デジタルカメラ、ビデオカメラ、DVDディスクドライブなどのポータブル機器においては、その小型化、軽量化に対応し、なおかつ組み立ての工数を低減するために、制御および駆動のための回路を1枚ないし数枚の基板にまとめて実装することが一般化しており、回路を構成する各種部品類についても、基板への実装に対応したものが種々、開発されている。   For example, in a portable device such as a film camera, a digital camera, a video camera, and a DVD disk drive, a circuit for controlling and driving is provided in order to reduce the size and weight of the device and to reduce the number of assembly steps. It has become common to mount them on one or several boards at a time, and various types of components constituting circuits have been developed that are compatible with the mounting on the boards.

図7は、上記機器類において、基板上で、各種駆動のために用いる小型のモータ(ステッピングモータなど)やトランス、リレー等を構成するべく、基板への実装に対応させた電磁コイルの従来例を示す正面図である。   FIG. 7 shows a conventional example of an electromagnetic coil adapted to be mounted on a board in order to constitute a small motor (stepping motor, etc.), a transformer, a relay, etc. used for various driving on the board in the above-mentioned devices. FIG.

図7を参照して、この従来例の電磁コイル90は、巻線が巻回されるボビン91と、端子93を保持する端子保持部92とを合成樹脂によって一体に形成し、そのうち端子保持部92に、一対の金属製の端子93を保持させたものである。また、図中に一点鎖線で示すように、ボビン91に巻回される巻線の両末端94は、それぞれ、端子保持部92に保持させた端子93の基部に巻き付けられ、はんだ付け等によって電気的に接続される。   Referring to FIG. 7, in the conventional electromagnetic coil 90, a bobbin 91 around which a winding is wound and a terminal holding portion 92 for holding a terminal 93 are integrally formed of synthetic resin. 92, a pair of metal terminals 93 are held. Further, as shown by a dashed line in the drawing, both ends 94 of the winding wound around the bobbin 91 are respectively wound around the base of the terminal 93 held by the terminal holding portion 92 and are electrically connected by soldering or the like. Connected.

かかる電磁コイル90は、端子93を基板95の通孔95aに挿通し、はんだ付け等して、基板95上の回路(図示せず)と端子93とを互いに固定すると共に、上記回路とボビン91に巻回される巻線とを、端子93を介して電気的に接続することによって、基板95上に実装される。   The electromagnetic coil 90 fixes the circuit 93 (not shown) on the circuit board 95 and the terminal 93 to each other by inserting the terminal 93 into the through-hole 95 a of the circuit board 95 and soldering the circuit. Is electrically mounted via terminals 93 to be mounted on the substrate 95.

図8は、図7の従来例において、端子93を端子保持部92によって保持する構造を拡大して示す拡大断面図である。
図8を参照して、端子保持部92には、端子93が圧入される袋孔(もしくは図示しない通孔)92aが形成されている。袋孔92aの長手方向と直交方向の断面は、端子93の同方向の断面より僅かに小さめに形成されている。そのため、端子93の基部を圧入した際に、合成樹脂の持つ弾性によって、端子93がしっかりと保持される。また、図の例では、端子93の、上記袋孔92aに圧入される基部の一部を厚み方向に押しつぶして幅方向に広げることで、圧入した端子93の抜け止め93aとしている。
FIG. 8 is an enlarged cross-sectional view showing a structure in which the terminal 93 is held by the terminal holding portion 92 in the conventional example of FIG.
Referring to FIG. 8, a bag hole (or a not-shown through hole) 92 a into which terminal 93 is press-fitted is formed in terminal holding portion 92. The cross section of the blind hole 92 a in the direction perpendicular to the longitudinal direction is formed slightly smaller than the cross section of the terminal 93 in the same direction. Therefore, when the base of the terminal 93 is press-fitted, the terminal 93 is firmly held by the elasticity of the synthetic resin. In the example shown in the figure, a part of the base of the terminal 93, which is press-fitted into the blind hole 92a, is crushed in the thickness direction and widened in the width direction, thereby forming a retaining 93a for the press-fitted terminal 93.

基板95に実装した電磁コイル90が、実装後の特性チェックにおいて不良であると判断され、交換の必要を生じた場合は、端子93と基板95上の回路とをはんだ付けしていたはんだを溶かした状態で、端子93を基板95の通孔95aから引き抜いて不良の電磁コイル90を除去しなければならない。   If the electromagnetic coil 90 mounted on the substrate 95 is determined to be defective in the characteristic check after mounting and needs to be replaced, the solder that has soldered the terminal 93 and the circuit on the substrate 95 is melted. In this state, the terminal 93 must be pulled out from the through hole 95a of the substrate 95 to remove the defective electromagnetic coil 90.

しかし、この引き抜きの際には、たとえ前記のように、端子93の基部に抜け止め93aを形成しておいても抜け止めの強度が十分でないため、端子93が、端子保持部92の袋孔92aから抜け出して、基板95側に残ることが多い。そして、端子93が抜ける際に、
・ 袋孔92aが広がったり、端子保持部92が割れたりする、
・ 両末端94を端子93にはんだ付けしていた巻線に過剰な応力が加わって、途中で断線する、
といった種々の不具合を生じて、取り外した電磁コイル90を再生して再使用できないという問題がある。また、基板95側に残った端子93を除去する手間がかかるという問題もある。
However, at the time of pulling out, even if the stopper 93a is formed at the base of the terminal 93 as described above, the strength of the stopper is not sufficient. It often escapes from 92a and remains on the substrate 95 side. When the terminal 93 comes off,
The bag hole 92a is widened or the terminal holding portion 92 is broken;
An excessive stress is applied to the winding where both ends 94 are soldered to the terminal 93, and the winding is broken in the middle;
Therefore, there is a problem that the removed electromagnetic coil 90 cannot be reproduced and reused. There is also a problem that it takes time to remove the terminal 93 remaining on the substrate 95 side.

端子の抜けの問題を解決するため、例えば、端子の基部に突起部を設け、突起部が端子保持部の樹脂中に埋設されるように、インサート成形することも考えられる。しかし、インサート成形では、
(a) 端子をインサートするため金型の構造がかなり複雑化し、金型の製造および成形の両面で高精度が要求されるため技術的に難しい、
(b) 金型に端子をセットする時間を要するため、1回の成形サイクルに要する時間が長くなり、生産性が低下する、
(c) そこで、端子を金型に送るために送り装置が用いられるが、その位置決めの精度が技術的に難しい
等の問題があり、電磁コイルのコストアップに繋がる。
In order to solve the problem of detachment of the terminal, for example, it is conceivable to provide a protrusion at the base of the terminal and insert-mold the protrusion so as to be embedded in the resin of the terminal holding portion. However, in insert molding,
(a) Inserting the terminals makes the structure of the mold considerably complicated, and requires high precision in both the manufacturing and molding of the mold.
(b) Since it takes time to set the terminals in the mold, the time required for one molding cycle becomes longer, and the productivity decreases.
(c) Therefore, a feeder is used to feed the terminals to the mold. However, there is a problem that the positioning accuracy is technically difficult, which leads to an increase in the cost of the electromagnetic coil.

本考案の目的は、基板に実装した電磁コイルを除去する際に、端子が端子保持部から抜けて基板側に残ることがないため、端子の抜けによって生じる種々の問題を生じるおそれがなく、しかもインサート成形する場合に比べてコストダウンが可能な電磁コイルを提供することにある。   The object of the present invention is that when removing the electromagnetic coil mounted on the substrate, the terminal does not come off from the terminal holding portion and remains on the substrate side, so that there is no possibility that various problems caused by the disconnection of the terminal will occur, and An object of the present invention is to provide an electromagnetic coil that can be reduced in cost as compared with the case of insert molding.

請求項1記載の考案は、巻線と、巻線が巻回されるボビンと、巻線に接続される端子と、端子を保持する端子保持部とを備え、上記端子は、長尺の端子本体と、その長手方向と交差する方向に突設される突起部とからなり、上記端子保持部は、一端開口から圧入した端子本体の先端部を他端開口から端子保持部の外方へ突出させた状態で保持する通孔と、通孔の一端開口側に設けられ、突起部を端子本体の圧入方向前方側から受けることで、端子本体の他端開口方向への抜けを防止する受け部とを有することを特徴とする電磁コイルである。   The invention according to claim 1 includes a winding, a bobbin around which the winding is wound, a terminal connected to the winding, and a terminal holding portion that holds the terminal, wherein the terminal is a long terminal. The terminal holding portion includes a main body and a protrusion projecting in a direction intersecting the longitudinal direction of the main body. The terminal holding portion protrudes a tip end of the terminal main body press-fitted from one end opening to the outside of the terminal holding portion from the other end opening. A receiving hole provided on one end opening side of the through hole and receiving the projection from the front side in the press-fitting direction of the terminal main body, thereby preventing the terminal main body from coming off in the other opening direction; And an electromagnetic coil having:

請求項1記載の考案によれば、基板に実装した電磁コイルを除去する際に、従来に比べてより確実に、端子の抜けを防止することができる。
すなわち、従来の、袋孔に端子を圧入しただけのものは、端子と袋孔の内周面との摩擦によってのみ抜け止めされているため、前記のように、基板に実装した電磁コイルを除去する際の引き抜き力によって袋孔から簡単に抜け出してしまう。また、端子の基部を押しつぶして抜け止めを形成したものも、形成した抜け止めの部分における端子と袋孔の内周面との摩擦力が上昇するだけで、基本的な抜け止めのメカニズムは単純な圧入の場合と同じであり、しかも、袋孔の内周面には、抜け止めを圧入した痕が凹溝となって残っているため、やはり基板に実装した電磁コイルを除去する際の引き抜き力によって袋孔から簡単に抜けてしまう。
According to the first aspect of the present invention, when the electromagnetic coil mounted on the substrate is removed, it is possible to more reliably prevent the terminal from coming off as compared with the related art.
That is, in the conventional case in which the terminal is simply press-fitted into the blind hole, the terminal is prevented from coming off only by the friction between the terminal and the inner peripheral surface of the blind hole. Therefore, as described above, the electromagnetic coil mounted on the substrate is removed. It easily gets out of the bag hole due to the pulling force at the time. In the case where the base of the terminal is crushed to form a stopper, the basic retaining mechanism is simple, simply because the frictional force between the terminal and the inner peripheral surface of the blind hole in the formed stopper is increased. It is the same as in the case of press-fitting, and since the mark on the inner peripheral surface of the blind hole has been left as a concave groove, the pull-out when removing the electromagnetic coil mounted on the board It easily gets out of the blind hole by force.

これに対し、請求項1記載の考案によれば、端子保持部の通孔の入口側に設けた受け部によって、端子の突起部を、端子本体の圧入方向前方側から受けることで、端子本体が他端開口方向へ抜けるのを防止しているため、端子保持部が破壊される強度までは、受け部による端子の抜け止めを維持することができる。このため、従来に比べてより確実に、端子の抜けを防止することができ、端子が抜けて基板側に残ることによって生じる種々の問題を全て解消することが可能となる。   On the other hand, according to the invention of the first aspect, the receiving portion provided on the inlet side of the through hole of the terminal holding portion receives the projection of the terminal from the front side in the press-fitting direction of the terminal main body, so that the terminal main body is formed. Is prevented from coming off in the opening direction of the other end, so that the terminal can be kept from falling off by the receiving portion until the terminal holding portion is broken. For this reason, the detachment of the terminal can be prevented more reliably than in the conventional art, and all the various problems caused by the detachment of the terminal and remaining on the substrate side can be solved.

また、請求項1記載の考案によれば、インサート成形の場合よりも金型の構造を単純化できるため、金型の製造および成形の両面で技術的に簡略化できる上、金型に端子をセットする時間を要しないため、1回の成形サイクルに要する時間を短縮して生産性を向上することができ、しかも位置決めの精度が難しい送り装置なども必要としないため、インサート成形の場合に比べて電磁コイルのコストを低減できるという利点もある。   According to the first aspect of the present invention, since the structure of the mold can be simplified as compared with the case of insert molding, it is possible to technically simplify both the production and the molding of the mold, and further, the terminals are connected to the mold. Since no set time is required, the time required for one molding cycle can be shortened and productivity can be improved. In addition, since there is no need for a feeder with difficult positioning accuracy, compared to insert molding, Therefore, there is an advantage that the cost of the electromagnetic coil can be reduced.

図1は、本考案の電磁コイルの一実施形態を示す図であって図1Aは正面図、図1Bは右側面図、図1Cは背面図、図1Dは平面図である。また、図2、図3は、図1DのII−II線断面図である。   FIG. 1 is a view showing an embodiment of the electromagnetic coil of the present invention, wherein FIG. 1A is a front view, FIG. 1B is a right side view, FIG. 1C is a rear view, and FIG. 1D is a plan view. 2 and 3 are cross-sectional views taken along line II-II of FIG. 1D.

図1を参照して、この実施形態の電磁コイルCは、巻線Wが巻回されるボビン1と、端子3を保持する端子保持部2とを、例えば液晶ポリマー、ポリブチレンテレフタレート等の合成樹脂によって一体に形成し、そのうち端子保持部2に、燐青銅、洋白等の金属からなる、一対の端子3を保持させたものである。
図中に一点鎖線で示すように、ボビン1に巻回される巻線Wの両末端W1は、それぞれ、端子保持部2に保持させた端子3の基部に巻き付けられ、はんだ付け等によって電気的に接続される。
Referring to FIG. 1, an electromagnetic coil C according to this embodiment is configured such that a bobbin 1 around which a winding W is wound and a terminal holding portion 2 holding a terminal 3 are made of, for example, a liquid crystal polymer, polybutylene terephthalate, or the like. A pair of terminals 3 made of a resin such as phosphor bronze, nickel-white or the like are held in the terminal holding portion 2.
As shown by a chain line in the figure, both ends W 1 of the winding W to be wound 1 wound bobbin, respectively, wound around the base of the terminal 3 which is held in the terminal holding portion 2, electricity by soldering Connected.

かかる電磁コイルCは、従来同様に、端子3を、図示しない基板の通孔に挿通し、はんだ付け等して、基板上の回路と端子3とを互いに固定すると共に、上記回路とボビン1に巻回される巻線Wとを、端子3を介して電気的に接続することによって、基板上に実装される。   Such an electromagnetic coil C fixes the circuit 3 on the board and the terminal 3 to each other by inserting the terminal 3 into a through hole of a board (not shown) and soldering the same, as in the related art. The winding W to be wound is electrically connected via the terminal 3 to be mounted on the substrate.

ボビン1は、巻線Wを巻回するための円筒状の胴部10と、この胴部10の一方側端部から、円筒の径方向外方に延設した円板状の第1鍔部11と、胴部10の他方側端部から、同様に円筒の径方向外方に延設した円板状の第2鍔部12とを備えており、このうち第2鍔部12の外周縁部に、端子保持部2が一体に形成されている。   The bobbin 1 has a cylindrical body 10 for winding the winding W, and a first disk-shaped flange extending from one end of the body 10 to the outside in the radial direction of the cylinder. 11 and a disk-shaped second flange portion 12 similarly extending from the other end of the body portion 10 to the outside in the radial direction of the cylinder, of which the outer peripheral edge of the second flange portion 12 is provided. The terminal holding part 2 is integrally formed with the part.

図1〜図3を参照して、端子保持部2は、ボビン1側の下面20aが、胴部10と同心状の凹入曲面とされ、実装時に基板と対向する反対側の上面20bが平面とされた保持部本体20を備えている。   With reference to FIGS. 1 to 3, terminal holding portion 2 has a lower surface 20 a on bobbin 1 side formed as a concave curved surface concentric with body portion 10, and an upper surface 20 b on the opposite side facing the substrate at the time of mounting. And a holding unit main body 20.

また、保持部本体20は、第1鍔部11側の端面20cが、第2鍔部12の内側面12aより一段、胴部10の他方側端部方向へ凹入し、かつ保持部本体20の下面20aが、第2鍔部12の外側面12bより外側に突出するように、上記下面20aの、端面20c側の部分で、第2鍔部12と連結されている。   Further, in the holding part body 20, the end face 20c on the first flange part 11 side is recessed one step from the inner side surface 12a of the second flange part 12 toward the other end part of the body part 10, and the holding part body 20 The lower surface 20a is connected to the second flange 12 at a portion of the lower surface 20a closer to the end surface 20c so that the lower surface 20a projects outward from the outer surface 12b of the second flange 12.

図4は、図1の電磁コイルCに用いる端子3の一例を示す斜視図である。
図4を参照して、この例の端子3は、長手方向の一方側端部30aが基板の通孔への挿入側の先端部とされた長尺の端子本体30と、この端子本体30の、長手方向の他方側端部30bから、長手方向と直交方向に突設された突起部31とを備えている。かかる端子3は、例えば、平板状の金属板を、上記端子本体30と突起部31とを有する平面形状に抜き加工(プレス抜き加工、エッチング抜き加工等)すると共に、一方側端部30aを、次に述べる通孔21や、基板の通孔への挿入を容易にするため、尖端状に加工する等して一体に形成される。
FIG. 4 is a perspective view showing an example of the terminal 3 used for the electromagnetic coil C of FIG.
Referring to FIG. 4, terminal 3 of this example has a long terminal body 30 in which one end 30a in the longitudinal direction is a tip on the insertion side into a through hole of a substrate, And a projection 31 protruding from the other end 30b in the longitudinal direction in a direction orthogonal to the longitudinal direction. The terminal 3 is formed, for example, by punching a flat metal plate into a planar shape having the terminal body 30 and the protrusion 31 (press punching, etching punching, etc.), and forming one end 30a by In order to facilitate insertion of the substrate into the through hole 21 or the through hole described below, the substrate is integrally formed by processing it into a pointed shape.

図1〜図4を参照して、前記保持部本体20の内部には、下面20aに一端開口21aを有すると共に、上面20bに他端開口21bを有し、前記一対の端子3を保持するための一対の通孔21が形成されている。また、各通孔21は、他端開口21b側が、端子本体30を圧入して保持する狭孔部21cとされ、一端開口21a側が、狭孔部21cに端子本体30を圧入した状態で突起部31を受容する広孔部21dとされている。   With reference to FIGS. 1 to 4, inside the holding portion main body 20, a lower surface 20 a has an opening 21 a at one end and an upper surface 20 b has an opening 21 b at the other end to hold the pair of terminals 3. Are formed. Each of the through holes 21 has a narrow hole 21c on the other end opening 21b side for press-fitting and holding the terminal body 30, and a projection on the one end opening 21a side with the terminal body 30 pressed into the narrow hole 21c. A wide hole portion 21d for receiving the first hole 31 is provided.

このうち、狭孔部21cは、その長手方向と直交方向の断面が、端子本体30の同方向の断面より僅かに小さめに形成されている。このため、端子本体30を圧入した際に、合成樹脂の持つ弾性によって、当該端子本体30をしっかりと保持することができる。   The cross section of the narrow hole portion 21c in the direction orthogonal to the longitudinal direction is formed slightly smaller than the cross section of the terminal body 30 in the same direction. Therefore, when the terminal body 30 is press-fitted, the terminal body 30 can be firmly held by the elasticity of the synthetic resin.

また、広孔部21dは、端子3の平面形状に合わせて、狭孔部21cに対して、図2、図3に示す断面方向の一方側を、通孔21の長手方向と直交方向に、突起部31の同方向の突出寸法と一致するように拡大した形状とされている。そして、上記狭孔部21cと広孔部21dとを繋ぐ、通孔21の長手方向と直交方向に伸びる段差面21eが、端子本体30を、通孔21の一端開口21aから他端開口21bへ向けて圧入し、その先端部である一方側端部30aを、他端開口21bから端子保持部2の外方へ一定寸法だけ突出させた状態で、突起部31を上記圧入方向(図3中に矢印で示す)の前方側から受ける、つまり、突起部31の圧入方向前方側の側面31aと当接して、端子本体30の他端開口21bの方向への抜けを防止する受け部とされている。   In addition, the wide hole portion 21 d is arranged such that one side of the cross-sectional direction shown in FIGS. 2 and 3 is perpendicular to the longitudinal direction of the through hole 21 with respect to the narrow hole portion 21 c in accordance with the planar shape of the terminal 3. The projection 31 has an enlarged shape so as to coincide with a projection dimension in the same direction. Then, a step surface 21e extending in a direction orthogonal to the longitudinal direction of the through hole 21 connecting the narrow hole portion 21c and the wide hole portion 21d moves the terminal body 30 from one end opening 21a of the through hole 21 to the other end opening 21b. In a state in which the one end 30a, which is the tip, is projected from the other end opening 21b to the outside of the terminal holding portion 2 by a predetermined dimension, the protrusion 31 is inserted in the above-described press-fit direction (FIG. 3). (Indicated by an arrow in FIG. 2) from the front side, that is, a receiving portion that comes into contact with the side surface 31a on the front side in the press-fitting direction of the projection portion 31 and prevents the terminal body 30 from coming off in the direction of the other end opening 21b. I have.

そして、上記の構成により、この実施形態の電磁コイルCにおいては、端子保持部2が破壊される強度までは、受け部としての段差面21eによる端子3の抜け止めを維持することができるため、端子3が抜けて基板側に残ることによって生じる種々の問題を全て解消することが可能となる。   With the above configuration, in the electromagnetic coil C of this embodiment, the terminal 3 can be kept from coming off by the stepped surface 21e as the receiving portion until the terminal holding portion 2 is broken. It is possible to eliminate all the various problems caused by the terminal 3 coming off and remaining on the substrate side.

図5は、端子3の変形例を示す斜視図である。また、図6は、この変形例の端子3を保持するための、通孔21の変形例を示す断面図である。   FIG. 5 is a perspective view showing a modification of the terminal 3. FIG. 6 is a sectional view showing a modification of the through hole 21 for holding the terminal 3 of this modification.

図5を参照して、この変形例の端子3は、長手方向の一方側端部30aが基板の通孔への挿入側の先端部とされた長尺の端子本体30と、この端子本体30の、長手方向の他方側端部30bから、長手方向と直交方向で、かつ反対方向に突設された一対の突起部31とを備えている。かかる端子3は、前記と同様に、平板状の金属板を、上記端子本体30と突起部31とを有する平面形状に抜き加工すると共に、一方側端部30aを、通孔21や、基板の通孔への挿入を容易にするため、尖端状に加工する等して一体に形成される。   Referring to FIG. 5, a terminal 3 of this modified example includes a long terminal body 30 having one end 30a in the longitudinal direction on the insertion side inserted into the through hole of the substrate; And a pair of projections 31 projecting from the other end 30b in the longitudinal direction in the direction orthogonal to the longitudinal direction and in the opposite direction. In the same manner as described above, the terminal 3 is formed by punching a flat metal plate into a flat shape having the terminal body 30 and the protruding portion 31, and forming one end 30 a of the through-hole 21 or the substrate. In order to facilitate insertion into the through hole, it is integrally formed by processing into a pointed shape or the like.

図6を参照して、上記変形例の端子3を保持するための、端子保持部2の通孔21は、他端開口21b側が、端子本体30を圧入して保持する狭孔部21cとされ、一端開口21a側が、狭孔部21cに端子本体30を圧入した状態で突起部31を受容する広孔部21dとされている。   Referring to FIG. 6, through hole 21 of terminal holding portion 2 for holding terminal 3 of the above-described modified example has the other end opening 21 b side formed as narrow hole portion 21 c for press-fitting and holding terminal body 30. The one end opening 21a side is a wide hole portion 21d that receives the protrusion 31 in a state where the terminal body 30 is pressed into the narrow hole portion 21c.

このうち、狭孔部21cは、その長手方向と直交方向の断面が、端子本体30の同方向の断面より僅かに小さめに形成されている。このため、端子本体30を圧入した際に、合成樹脂の持つ弾性によって、当該端子本体30をしっかりと保持することができる。   The cross section of the narrow hole portion 21c in the direction orthogonal to the longitudinal direction is formed slightly smaller than the cross section of the terminal body 30 in the same direction. Therefore, when the terminal body 30 is press-fitted, the terminal body 30 can be firmly held by the elasticity of the synthetic resin.

また、広孔部21dは、端子3の平面形状に合わせて、狭孔部21cに対して、図6に示す断面方向の両方側を、通孔21の長手方向と直交方向に、突起部31の同方向の突出寸法と一致するように拡大した形状とされている。そして、上記狭孔部21cと広孔部21dとを繋ぐ、通孔21の長手方向と直交方向で、かつ反対方向に伸びる一対の段差面21eが、端子本体30を、通孔21の一端開口21aから他端開口21bへ向けて圧入し、その先端部である一方側端部30aを、他端開口21bから端子保持部2の外方へ一定寸法だけ突出させた状態で、突起部31を上記圧入方向の前方側から受ける、つまり、突起部31の圧入方向前方側の側面31aと当接して、端子本体30の他端開口21bの方向への抜けを防止する受け部とされている。   In addition, the wide hole 21 d is formed so that the narrow hole 21 c is formed on both sides of the cross section shown in FIG. 6 in the direction orthogonal to the longitudinal direction of the through hole 21 in accordance with the planar shape of the terminal 3. The shape is enlarged so as to coincide with the protrusion dimension in the same direction. A pair of stepped surfaces 21e extending in the direction perpendicular to the longitudinal direction of the through hole 21 and extending in the opposite direction, connecting the narrow hole portion 21c and the wide hole portion 21d, opens the terminal body 30 through one end of the through hole 21. The protrusion 31 is pressed into the other end opening 21b from the other end 21a, and the one end 30a, which is the tip end, is protruded from the other end opening 21b outwardly of the terminal holding portion 2 by a predetermined size. It is a receiving portion that receives from the front side in the press-fitting direction, that is, abuts against the side surface 31a of the protrusion 31 on the front side in the press-fitting direction to prevent the terminal body 30 from coming off in the direction of the other end opening 21b.

なお、本考案の電磁コイルCの構成は、以上で説明した実施形態には限定されず、本考案の要旨を変更しない範囲で、種々の変更を施すことができる。
本考案の電磁コイルCは、例えば、フィルムカメラ、デジタルカメラ、ビデオカメラ、DVDディスクドライブなどの機器類において、基板上で、各種駆動のために用いる小型のモータやトランス、リレー等を構成するために用いられる。例えば、ボビン1の円筒状の胴部10内に磁性体を挿入した、本考案の電磁コイルCを2個、基板上で向かい合わせに配置すると、ステッピングモータのステータを構成することができる。
The configuration of the electromagnetic coil C of the present invention is not limited to the embodiment described above, and various changes can be made without changing the gist of the present invention.
The electromagnetic coil C of the present invention is used to configure small motors, transformers, relays, and the like used for various drives on a substrate in devices such as a film camera, a digital camera, a video camera, and a DVD disk drive. Used for For example, a stator of a stepping motor can be formed by arranging two electromagnetic coils C of the present invention, each having a magnetic body inserted into a cylindrical body 10 of the bobbin 1, facing each other on a substrate.

本考案の電磁コイルの一実施形態を示す図であって図1Aは正面図、図1Bは右側面図、図1Cは背面図、図1Dは平面図である。また、図2、図3は、図1DのII−II線断面図である。1A is a front view, FIG. 1B is a right side view, FIG. 1C is a rear view, and FIG. 1D is a plan view. 2 and 3 are cross-sectional views taken along line II-II of FIG. 1D. 図1DのII−II線断面図である。FIG. 2D is a sectional view taken along line II-II of FIG. 1D. 図1DのII−II線断面図である。FIG. 2D is a sectional view taken along line II-II of FIG. 1D. 図1の電磁コイルCに用いる端子の一例を示す斜視図である。FIG. 2 is a perspective view illustrating an example of a terminal used for the electromagnetic coil C of FIG. 1. 端子の変形例を示す斜視図である。It is a perspective view showing a modification of a terminal. 図5の端子を保持する通孔の変形例を示す断面図である。It is sectional drawing which shows the modification of the through-hole which holds the terminal of FIG. 電磁コイルの従来例を示す正面図である。It is a front view which shows the conventional example of an electromagnetic coil. 図7の従来例において、端子を端子保持部によって保持する構造を拡大して示す拡大断面図である。FIG. 8 is an enlarged cross-sectional view showing, in an enlarged manner, a structure in which a terminal is held by a terminal holding portion in the conventional example of FIG.

符号の説明Explanation of reference numerals

C 電磁コイル
1 ボビン
2 端子保持部
21 通孔
21a 一端開口
21b 他端開口
21e 段差面(受け部)
3 端子
30 端子本体
30a 一方側端部(先端部)
31 突起部
M 巻線
C electromagnetic coil 1 bobbin 2 terminal holder 21 through hole 21a one end opening 21b other end opening 21e step surface (receiving part)
3 terminal 30 terminal body 30a One end (tip)
31 Projection M Winding

Claims (1)

巻線と、巻線が巻回されるボビンと、巻線に接続される端子と、端子を保持する端子保持部とを備える電磁コイルにおいて、
上記端子は、長尺の端子本体と、その長手方向と交差する方向に突設される突起部とからなり、
上記端子保持部は、一端開口から圧入した端子本体の先端部を他端開口から端子保持部の外方へ突出させた状態で保持する通孔と、通孔の一端開口側に設けられ、突起部を端子本体の圧入方向前方側から受けることで、端子本体の他端開口方向への抜けを防止する受け部とを有することを特徴とする電磁コイル。
In a magnetic coil including a winding, a bobbin around which the winding is wound, a terminal connected to the winding, and a terminal holding unit that holds the terminal,
The terminal is composed of a long terminal body and a protrusion projecting in a direction intersecting the longitudinal direction thereof,
The terminal holding portion has a through hole for holding the distal end portion of the terminal body press-fitted from the one end opening so as to protrude outward from the terminal holding portion from the other end opening, and is provided on one end opening side of the through hole. A receiving portion for receiving the portion from the front side in the press-fitting direction of the terminal main body to prevent the terminal main body from coming off in the opening direction at the other end.
JP2004002658U 2004-05-13 2004-05-13 Electromagnetic coil Expired - Lifetime JP3105214U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004002658U JP3105214U (en) 2004-05-13 2004-05-13 Electromagnetic coil

Publications (1)

Publication Number Publication Date
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Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
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