JP2007214528A - Surface-mounting transformer for corner sensor - Google Patents
Surface-mounting transformer for corner sensor Download PDFInfo
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Abstract
Description
本発明は、コーナーセンサ用面実装トランスに関するものであり、特に、電子回路基板に面実装するタイプのコーナーセンサ用面実装トランスに関するものである。 The present invention relates to a corner sensor surface-mount transformer, and more particularly to a corner sensor surface-mount transformer that is surface-mounted on an electronic circuit board.
従来、このような面実装型トランスは、例えば特許文献１で示すような構造や、図５及び図６に示すような構造が知られている。 Conventionally, such a surface mount type transformer has a structure as shown in, for example, Patent Document 1 and a structure as shown in FIGS. 5 and 6.
図５及び図６に示す面実装型トランス１は、絶縁性基台２の側面に、該基台２から水平方向に突設された複数のリード端子３，３，…を設けているとともに、角形シールドケース４で外側が覆われている。図示せぬコイルボビンの外周面に巻線されているコイルの各巻線引き回し部５ａ，５ａ，…を、それぞれ対応するリード端子３，３，…の根元部分３ａに絡げ、絡げ部５と根元部分３ａとを半田固定している。そして、各リード端子３，３，…の先端部３ｂは下側に向かってＬ字形状に折り曲げられ、図６に示すように、その先端部３ｂを電子回路基板６に半田付けすることにより、面実装型トランス１は電子回路基板６の実装面に取り付けられる。 The surface mount transformer 1 shown in FIGS. 5 and 6 is provided with a plurality of lead terminals 3, 3,... Projecting horizontally from the base 2 on the side surface of the insulating base 2. The outer side is covered with the square shield case 4. The coil winding portions 5a, 5a,... Wound around the outer peripheral surface of the coil bobbin (not shown) are entangled with the root portions 3a of the corresponding lead terminals 3, 3,. The portion 3a is fixed by soldering. Then, the tip 3b of each lead terminal 3, 3,... Is bent downward in an L shape, and by soldering the tip 3b to the electronic circuit board 6, as shown in FIG. The surface-mount transformer 1 is attached to the mounting surface of the electronic circuit board 6.
図７は、リード端子３にコイルの巻線引き回し部５ａを絡げ部５に接続した様子を示す図である。リード端子３は、一部が基台２に埋設され、残りの部分が外部に突出している。そして、リード端子３の外部に突出している根元部分３ａに、コイルの絡げ部５が接続されている。
ところで、特許文献１記載の面実装型トランス、及び図５及び図６に示すような構造の面実装型トランスにおいては、コイルにおける巻線引き回し部５ａの絡げ処理を、自動巻線機を用いて直接リード端子３に絡げている。一般に、自動巻線機を用いた巻線絡げ処理では、特に、絡げ処理の始めと巻線切断時は最も強い張力がリード端子３に加わる。しかし、リード端子３の屈曲強度は弱い。このため、図７に実線で示すリード端子３のように、点線で示す正常位置のリード端子３に対して、不要な曲りが生じることが多い。 By the way, in the surface mount type transformer described in Patent Document 1 and the surface mount type transformer having the structure as shown in FIGS. 5 and 6, the automatic winding machine is used for the binding process of the winding lead portion 5 a in the coil. Directly tangled to the lead terminal 3. Generally, in the winding process using an automatic winding machine, the strongest tension is applied to the lead terminal 3 particularly at the beginning of the binding process and when the winding is cut. However, the bending strength of the lead terminal 3 is weak. For this reason, like the lead terminal 3 indicated by a solid line in FIG.
したがって、上記巻線張力のために、リード端子３に不要な曲りが生じた場合には、リード端子３の先端部３ａと電子回路基板６の導体部との位置がずれ、実装基板への半田付け不良が生じてしまうという問題点があった。 Therefore, when an unnecessary bend occurs in the lead terminal 3 due to the winding tension, the positions of the distal end portion 3a of the lead terminal 3 and the conductor portion of the electronic circuit board 6 are shifted, and solder to the mounting board is caused. There was a problem that improper attachment occurred.
また、外部で使用する機器等に組み込まれる場合には、さらに防水性を高めるのに、電子回路基板６上で、リード端子３の周囲に、シリコン・ウレタン等の防水用樹脂封止材を充填することも多い。しかし、防水用樹脂封止材は温度変化による膨脹・収縮が激しい。このため、防水用樹脂封止材が温度変化を起こすと、巻線引き回し部も温度変化で応力が発生する。巻線引き回し部５ａは絡げ部５とリード端子３の固定のために半田を用いるが、その半田が付着するため、付着する半田の影響で膨脹係数が非常に小さくなり、且つ巻線引き回し部の強度が半田付着前に比べ、半田により巻線引き回し部に銅食われが発生し、コイルが焼け細くなるため、強度は大きく低下する。そのため、防水用樹脂封止材のように膨脹係数が大きいものが封止されると膨脹係数の差により応力が加わり、コイルの巻線引き回し部５ａの部分に外力が付与され、疲労断線を起こすという問題点もある。 In addition, when incorporated in equipment used externally, a waterproof resin sealing material such as silicon / urethane is filled around the lead terminals 3 on the electronic circuit board 6 in order to further enhance waterproofness. There are many things to do. However, the waterproof resin encapsulant is severely expanded and contracted due to temperature changes. For this reason, if the waterproof resin sealing material undergoes a temperature change, stress also occurs in the winding lead portion due to the temperature change. The winding routing portion 5a uses solder for fixing the binding portion 5 and the lead terminal 3. However, since the solder adheres, the expansion coefficient becomes very small due to the influence of the attached solder, and the winding routing portion 5a. Compared to before the solder adheres, the solder erodes copper in the winding lead portion and the coil becomes burnt and thin, so the strength is greatly reduced. Therefore, when a material having a large expansion coefficient such as a waterproof resin sealing material is sealed, stress is applied due to the difference in the expansion coefficient, and external force is applied to the coil winding portion 5a, causing fatigue disconnection. There is also a problem.
そこで、コイルの巻線引き回し部の断線をなくして信頼性を向上させるとともに、リード端子の不要な曲りを防止して、基板実装面への半田付けを確実に行うことができるようにするために解決すべき技術的課題が生じてくるのであり、本発明はこの課題を解決することを目的とする。 Therefore, in order to improve the reliability by eliminating the disconnection of the coil winding part, to prevent unnecessary bending of the lead terminal, and to ensure that the soldering to the board mounting surface can be performed. A technical problem to be solved arises, and the present invention aims to solve this problem.
本発明は上記目的を達成するために提案されたものであり、請求項１記載の発明は、巻線が施された巻枠体を支持している絶縁性の基台から水平方向に突出されている複数のリード端子に、前記巻線のリード部を絡げてなるコーナーセンサ用面実装トランスにおいて、前記リード端子を、基板実装面に半田付けされる端子部と、該端子部よりも上方に位置し、且つ前記巻線のリード部を絡げる端末処理部とで構成し、前記端子部と前記端末処理部との間を前記基台に固定してなるコーナーセンサ用面実装トランスを提供する。 The present invention has been proposed in order to achieve the above object, and the invention according to claim 1 is projected in a horizontal direction from an insulating base supporting a winding frame body on which windings are applied. In a corner sensor surface-mount transformer in which a lead portion of the winding is entangled with a plurality of lead terminals, the lead terminal is soldered to the board mounting surface, and the terminal portion is above the terminal portion. A corner sensor surface-mount transformer comprising: a terminal processing unit that is connected to the lead processing portion of the winding; and a fixed portion between the terminal unit and the terminal processing unit. provide.
この構成によれば、基板実装面に半田付けされる端子部と巻線のリード部を絡げる端末処理部とを分離した構造にしたことで、巻線切断時における巻線張力は、端子部に直接加わることがない。したがって、巻線のリード部の絡げ処理時に、端子部に不要な曲りが生じない。また、端子部側からの外力も、端末処理部に直接加わることがない。したがって、端子部側に変形が発生しても、巻線のリード部に不要な力が加わることもない。 According to this configuration, the terminal tension that is soldered to the board mounting surface and the terminal processing part that links the lead part of the winding are separated, so that the winding tension at the time of winding cutting is the terminal There is no direct participation in the department. Therefore, no unnecessary bending occurs in the terminal portion during the binding process of the lead portion of the winding. Moreover, the external force from the terminal part side is not directly applied to the terminal processing part. Therefore, even if deformation occurs on the terminal portion side, unnecessary force is not applied to the lead portion of the winding.
請求項２記載の発明は、上記端子部を、上記基台の底面に露出させて、該基台の側面最下端部から外側に向かって水平直線状に突設してなるコーナーセンサ用面実装トランスを提供する。 According to a second aspect of the present invention, there is provided a surface mounting for a corner sensor, wherein the terminal portion is exposed on the bottom surface of the base, and is protruded in a horizontal straight line from the bottom end of the side surface of the base toward the outside. Provide a transformer.
この構成によれば、基板実装面と接触する面積を多くとることができる端子部が得られる。 According to this structure, the terminal part which can take many areas which contact a board | substrate mounting surface is obtained.
請求項３記載の発明は、ドラム状のコアと、該コアの外周面に巻線されたコイルと、前記コアの下端に設けられた絶縁性の基台と、該基台から水平方向に突出されている複数のリード端子とを備え、前記コイルのリード部を対応する前記リード端子に絡げてなるコーナーセンサ用面実装トランスにおいて、対向する二つの内側面にそれぞれねじ部を有するシールドケースと、前記コイルを収容すべく該コイルの直径よりも大きな内径で、外周面には前記シールドケースのねじ部と螺合するねじを有して前記コイルの外周を覆って配設され、前記シールドケース内で進退出して前記コイルのインダクタンスを可変する円筒状の可動コアとを備えるとともに、前記リード端子を、基板実装面に半田付けされる端子部と、該端子部よりも上方に位置し、且つ前記コイルのリード部を絡げる端末処理部とで構成し、前記端子部と前記端末処理部との間を前記基台に固定してなるコーナーセンサ用面実装トランスを提供する。 According to a third aspect of the present invention, there is provided a drum-shaped core, a coil wound around the outer peripheral surface of the core, an insulating base provided at a lower end of the core, and a horizontal projection from the base. A plurality of lead terminals, and a shield case having a thread portion on each of two opposing inner surfaces in a corner sensor surface-mount transformer, wherein the lead portion of the coil is entangled with the corresponding lead terminal. The shield case has an inner diameter larger than the diameter of the coil to accommodate the coil, and has a screw threadedly engaged with a screw portion of the shield case on the outer peripheral surface so as to cover the outer periphery of the coil. A cylindrical movable core that advances and retracts within the coil to change the inductance of the coil, and the lead terminal is soldered to the board mounting surface, and is positioned above the terminal part. And the constituted by the terminal processing unit Karageru the lead portion of the coil, to provide a fixed corner sensor for surface mounting transformer comprising said base and between said terminal portion terminal processing unit.
この構成によれば、基板実装面に半田付けされる端子部とコイルのリード部を絡げる端末処理部とを分離した構造にしたことで、巻線切断時における巻線張力は、端子部に直接加わることがない。したがって、コイルのリード部の絡げ処理時に、端子部に不要な曲りが生じない。また、端子部側からの外力も、端末処理部に直接加わることがない。したがって、端子部側に変形が発生しても、コイルのリード部に不要な力が加わることもない。また、シールドケース内で、可動コアを回転させつつ進退させることにより、所望のインダクタンスを得ることができる。 According to this configuration, since the terminal portion soldered to the board mounting surface and the terminal processing portion that ties the lead portion of the coil are separated, the winding tension at the time of winding cutting is the terminal portion. There is no direct participation. Therefore, unnecessary bending does not occur in the terminal portion during the binding process of the coil lead portion. Moreover, the external force from the terminal part side is not directly applied to the terminal processing part. Therefore, even if the terminal portion is deformed, unnecessary force is not applied to the lead portion of the coil. Moreover, a desired inductance can be obtained by advancing and retracting the movable core while rotating it in the shield case.
請求項４記載の発明は、上記端末処理部を、巻線のリード部を半田絡げをする絡げ部と、半田が巻線引き回し部に付かない巻線緩み部とで構成してなるコーナーセンサ用面実装トランスを提供する。 According to a fourth aspect of the present invention, there is provided a corner in which the terminal processing section is constituted by a binding section for soldering the lead portion of the winding and a winding loosening section where the solder does not attach to the winding lead portion. Provide surface mount transformer for sensors.
この構成によれば、端子部側に外力が加わっても巻線緩み部により応力が逃げるため、絡げ部に半田絡げされているリード部は断線に至らない。また実装基板上で端子部の周囲に防水用樹脂封止材が充填されても巻線緩み部のために巻線引き回し部に半田が付着しないため、リード部の強度に劣化がなく、断線を防止することができる。 According to this configuration, even if an external force is applied to the terminal portion side, stress is released by the loosened portion of the winding, so that the lead portion soldered to the binding portion does not break. Also, even if a waterproof resin encapsulant is filled around the terminal part on the mounting board, solder does not adhere to the winding lead part due to the loose part of the winding, so there is no deterioration in the strength of the lead part and disconnection Can be prevented.
請求項１記載の発明は、リード端子を、基板実装面に半田付けされる端子部と、該端子部よりも上方に位置し、且つ巻線のリード部を絡げる端末処理部とで構成し、前記端子部と前記端末処理部との間を基台に固定したので、巻線のリード部の絡げ処理時に、端子部に不要な曲りを生じさせることがないことから、基板実装面への半田付け処理を確実に行うことができて信頼性を向上させることができる。また、端子部側からの外力も、端末処理部に直接加わることがないことから、端子部側に変形が生じても、巻線のリード部に不要な力が加わることもなく、リード部の疲労断線をなくすことができて信頼性を向上させることができるという利点がある。 According to the first aspect of the present invention, the lead terminal is composed of a terminal portion soldered to the board mounting surface and a terminal processing portion that is located above the terminal portion and entangles the lead portion of the winding. In addition, since the space between the terminal portion and the terminal processing portion is fixed to the base, there is no need to cause unnecessary bending in the terminal portion during the binding process of the lead portion of the winding. The soldering process can be reliably performed, and the reliability can be improved. In addition, since external force from the terminal part side is not directly applied to the terminal processing part, even if deformation occurs on the terminal part side, unnecessary force is not applied to the lead part of the winding, and the lead part There is an advantage that fatigue disconnection can be eliminated and reliability can be improved.
請求項２記載の発明は、上記端子部を、上記基台の底面に露出させて、該基台の側面最下端部から外側に向かって水平直線状に突設したので、基板実装面に対し端子部の接触面積を大きくすることができて、より確実な半田付けが可能になり、信頼性を向上させることができる。また、端子部を水平直線状に形成したことで、リード端子の製造を簡単にすることができる。したがって、請求項１記載の発明の効果に加えてさらに、信頼性及び経済性を向上させることができるという利点がある。 In the invention according to claim 2, the terminal portion is exposed on the bottom surface of the base, and is projected in a horizontal straight line from the lowermost side portion of the side surface toward the outside. The contact area of the terminal portion can be increased, more reliable soldering is possible, and reliability can be improved. In addition, since the terminal portion is formed in a horizontal straight line, the manufacture of the lead terminal can be simplified. Therefore, in addition to the effect of the first aspect of the invention, there is an advantage that reliability and economy can be further improved.
請求項３記載の発明は、対向する二つの内側面にそれぞれねじ部を有するシールドケースと、コイルを収容すべく該コイルの直径よりも大きな内径で、外周面には前記シールドケースのねじ部と螺合するねじを有して前記コイルの外周を覆って配設され、前記シールドケース内で進退出して前記コイルのインダクタンスを可変する円筒状の可動コアとを備えるとともに、リード端子を、基板実装面に半田付けされる端子部と、該端子部よりも上方に位置し、且つ前記コイルのリード部を絡げる端末処理部とで構成し、前記端子部と前記端末処理部との間を前記基台に固定したので、コイルのリード部の絡げ処理時に、端子部に不要な曲りを生じさせないことから、基板実装面への半田付け処理を確実に行うことができて信頼性を向上させることができる。また、端子部側からの外力も、端末処理部に直接加わることがないことから、端子部側に変形が生じても、コイルのリード部に不要な力を発生させることもなく、リード部の疲労断線をなくすことができて信頼性を向上させることができる。さらに、可動コアを回転させつつ進退させることにより、所望のインダクタンスを安定的に得ることができるという利点がある。 According to a third aspect of the present invention, there is provided a shield case having a threaded portion on each of two opposing inner surfaces, an inner diameter larger than the diameter of the coil to accommodate the coil, and a threaded portion of the shield case on the outer peripheral surface. A cylindrical movable core which has a screw to be screwed and is arranged to cover the outer periphery of the coil and which moves forward and backward in the shield case to change the inductance of the coil; A terminal portion that is soldered to the surface, and a terminal processing portion that is positioned above the terminal portion and entangles the lead portion of the coil, and between the terminal portion and the terminal processing portion Since it is fixed to the base, it does not cause unnecessary bending in the terminal part during the binding process of the coil lead part, so the soldering process to the board mounting surface can be performed reliably and the reliability is improved. Let Can. In addition, since external force from the terminal part side is not directly applied to the terminal processing part, even if deformation occurs on the terminal part side, unnecessary force is not generated in the lead part of the coil. The fatigue disconnection can be eliminated and the reliability can be improved. Furthermore, there is an advantage that a desired inductance can be stably obtained by moving the movable core back and forth while rotating.
請求項４記載の発明は、上記端末処理部を、巻線のリード部を半田絡げをする絡げ部と、半田が巻線引き回し部に付かない巻線緩み部とで構成したので、巻線緩み部の追加により外力に強くなり、防水用樹脂封止材等で巻線引き回し部又は絡げ部に仮に外力が加わっても断線に強く、コーナーセンサのようにバンパー等の使用環境の悪い場所での使用でも良好な品質を確保することができるという利点がある。 In the invention according to claim 4, the terminal processing portion is constituted by a binding portion for soldering the lead portion of the winding and a winding loosening portion where the solder does not adhere to the winding lead portion. Addition of wire loosening part makes it strong against external force. Even if external force is applied to the winding lead or tie part with waterproof resin sealing material etc., it is strong against disconnection, and the use environment such as a bumper is bad like a corner sensor. There is an advantage that good quality can be ensured even when used in places.
コイルの巻線引き回し部の断線をなくして信頼性を向上させるとともに、リード端子の不要な曲りを防止して、基板実装面への半田付けを確実に行うことができるようにするという目的を達成するために、巻線が施された巻枠体を支持している絶縁性の基台から水平方向に突出されている複数のリード端子に、前記巻線のリード部を絡げてなるコーナーセンサ用面実装トランスにおいて、前記リード端子を、基板実装面に半田付けされる端子部と、該端子部よりも上方に位置し、且つ前記巻線のリード部を絡げる端末処理部とで構成し、前記端子部と前記端末処理部との間を前記基台に固定することにより実現した。 Achieved the purpose of improving the reliability by eliminating the breakage of the coil winding part and preventing the lead terminals from being bent to ensure soldering to the board mounting surface. In order to achieve this, a corner sensor comprising a plurality of lead terminals projecting in a horizontal direction from an insulating base that supports a winding frame body on which windings are applied, with the lead portions of the windings being tangled In a surface mount transformer, the lead terminal is composed of a terminal portion soldered to the board mounting surface and a terminal processing portion that is located above the terminal portion and entangles the lead portion of the winding. And it implement | achieved by fixing between the said terminal part and the said terminal process part to the said base.
以下、本発明のコーナーセンサ用面実装トランスについて、好適な実施例をあげて説明する。図１乃至図３は本発明に係るコーナーセンサ用面実装トランスを示すもので、図１は上面図、図２は一部切載側断面図、図３は底面図である。 The corner sensor surface mount transformer of the present invention will be described below with reference to preferred embodiments. 1 to 3 show a surface mount transformer for a corner sensor according to the present invention. FIG. 1 is a top view, FIG. 2 is a partially cut-away side sectional view, and FIG. 3 is a bottom view.
図１乃至図３において、コーナーセンサ用面実装トランス１１は、絶縁性の基台１２、固定コア１３、コイル１４、可動コア１５、及び角形シールドケース１６で構成されている。 1 to 3, the corner sensor surface-mount transformer 11 includes an insulating base 12, a fixed core 13, a coil 14, a movable core 15, and a rectangular shield case 16.
前記基台１２は、液晶ポリマー等の熱可塑性絶縁樹脂で概略偏平四角形状に成形されている。また、その成形時に、上面に固定コア取付孔１７を設けるとともに、４つのリード端子１８，１８，…をインサートし、左右の両側面から各々２つのリード端子１８，１８が外側に向かって水平に突出した状態にして設けている。 The base 12 is formed in a substantially flat quadrangular shape with a thermoplastic insulating resin such as a liquid crystal polymer. Further, at the time of molding, the fixed core mounting hole 17 is provided on the upper surface, and the four lead terminals 18, 18,... Are inserted so that the two lead terminals 18, 18 are horizontally directed outward from the left and right side surfaces. It is provided in a protruding state.
該リード端子１８は、リン青銅であり、図４に示すように、互いに同じ方向に向かって平行に延びる端子部１８ａ及び端末処理部１８ｂと、該端子部１８ａと端末処理部１８ｂとの一端側を互いに連結している連結部１８ｃとを一体に設け、概略コの字形状に形成されている。また、連結部１８ｃの略中間部位１８ｄは、上下方向に折り曲げられ、この折り曲げによって端子部１８ａと端末処理部１８ｂとの位置を互いに上下にずらしている。このずれ量は、後述するコイル１４の絡げ部１４ａ、巻き緩み部１４ｂの絡げ高さを十分吸収できる量であって、図２に示すように、面実装型トランス１１を電子回路基板１９上に実装させたときに、絡げ部１４ａ、巻き緩み部１４ｂが基板実装面と接触しないようにすることができる量である。 The lead terminal 18 is phosphor bronze, and as shown in FIG. 4, one end side of the terminal portion 18a and the terminal processing portion 18b extending in parallel to each other in the same direction, and the terminal portion 18a and the terminal processing portion 18b. Are integrally formed with a connecting portion 18c that connects the two to each other, and is formed in a substantially U-shape. Further, the substantially intermediate portion 18d of the connecting portion 18c is bent in the vertical direction, and the positions of the terminal portion 18a and the terminal processing portion 18b are shifted up and down by this bending. This deviation amount is an amount that can sufficiently absorb the entangled heights of the binding portion 14a and the winding loose portion 14b of the coil 14, which will be described later, and as shown in FIG. This is an amount that can prevent the binding portion 14a and the loosened winding portion 14b from coming into contact with the board mounting surface when mounted on the board.
そして、この各リード端子１８は、図１及び図３に示すように、端子部１８ａを外側、端末処理部１８ｂを内側とし、且つ図２に示すように、端子部１８ａが端末処理部１８ｂよりも下側で、また端子部１８ａが基台１２の最下端部に配置されて、端子部１８ａの下面が基台１２の底面に露出した状態で、各端子部１８ａと端末処理部１８ｂとが基台１２の側面からそれぞれ外側に向かって水平方向に突出して設けられている。 As shown in FIGS. 1 and 3, each lead terminal 18 has the terminal portion 18a on the outside, the terminal processing portion 18b on the inside, and as shown in FIG. 2, the terminal portion 18a is connected to the terminal processing portion 18b. In the state where the terminal portion 18a is disposed at the lowermost end portion of the base 12 and the lower surface of the terminal portion 18a is exposed at the bottom surface of the base 12, the terminal portions 18a and the terminal processing portions 18b are The base 12 is provided so as to protrude from the side surface of the base 12 in the horizontal direction.
前記固定コア１３は、ニッケル系フェライトコアで、ドラム状に形成されており、図２に示すように、下端側の突出部１３ａを基台１２の固定コア取付孔１７に嵌合させ、かつ接着剤で基台１２に固定することにより、基台１２上に立設した状態にして取り付けられている。この固定コア１３は巻枠体の機能を有しているものであって、該固定コア１３の外周面には、巻線が施されて前記コイル１４が形成されており、コイル１４から引き出された４つのリード部は、それぞれ対応するリード端子１８の端末処理部１８ｂに絡げられ、且つ端末処理部１８ｂと半田付けされている。 The fixed core 13 is a nickel-based ferrite core and is formed in a drum shape. As shown in FIG. 2, the protruding portion 13a on the lower end side is fitted into the fixed core mounting hole 17 of the base 12 and bonded. By being fixed to the base 12 with an agent, it is attached in a state of standing on the base 12. The fixed core 13 has a function of a winding frame. The coil 14 is formed on the outer peripheral surface of the fixed core 13 by winding, and the coil 14 is drawn out from the coil 14. The four lead portions are entangled with the terminal processing portions 18b of the corresponding lead terminals 18 and soldered to the terminal processing portions 18b.
前記可動コア１５は、ニッケル系フェライトコアで、固定コア１３と共にコイル１４を収容すべく、コイル１４の直径よりも大きな内径で、上面が閉塞され、下面側が開口された、カップ形状をした筒体として作られており、外周面にはねじ２１が形成されている。また、上面には、図１に示すように、十字溝２２を設けている。 The movable core 15 is a nickel-based ferrite core, and has a cup-shaped cylindrical body having an inner diameter larger than the diameter of the coil 14, closed on the upper surface, and opened on the lower surface side to accommodate the coil 14 together with the fixed core 13. The screw 21 is formed on the outer peripheral surface. Further, as shown in FIG. 1, a cross groove 22 is provided on the upper surface.
前記角形シールドケース１６は、銅合金製であり、上面が閉じられ、下面が開口された、四角柱状をした筒体であり、内部に可動コア１５を収容すべく、該可動コア１５の直径よりも大きな内径で形成されている。また、上面には、可動コア１５の十字溝２２に、ドライバー等の工具を当てるための丸孔２３を設けている。その角形シールドケース１６は、内側のシールドケース部１６Ａと、この内側のシールドケース部１６Ａを収容してなる外側のシールドケース部１６Ｂとで、二重構造にし、１つのケースとして作られている。 The rectangular shield case 16 is made of a copper alloy, and is a rectangular column-shaped cylinder whose upper surface is closed and whose lower surface is opened. In order to accommodate the movable core 15 therein, the square shield case 16 has a diameter larger than that of the movable core 15. Is also formed with a large inner diameter. Further, a round hole 23 for applying a tool such as a screwdriver to the cross groove 22 of the movable core 15 is provided on the upper surface. The rectangular shield case 16 is formed as a single case with a double structure composed of an inner shield case portion 16A and an outer shield case portion 16B accommodating the inner shield case portion 16A.
また、内側のシールドケース部１６Ａの対向し合っている左右の内面には、可動コア１５のねじ２１と螺合すべき、ねじ部２４，２４が形成されている。 Further, on the left and right inner surfaces of the inner shield case portion 16A facing each other, screw portions 24 and 24 to be screwed with the screw 21 of the movable core 15 are formed.
以上のように形成されている本実施例は、以下のようにして組み立てられる。まず、上記角形シールドケース１６に、図２に示すように、その下方開口から可動コア１５を挿入する。可動コア１５は、外周面にねじ２１が形成されていることから、可動コア１５を回転させながら挿入すると、内側のシールドケース部１６Ａに設けられているねじ部２４，２４と噛合し、可動コア１５が角形シールドケース１６内で保持される。 The present embodiment formed as described above is assembled as follows. First, as shown in FIG. 2, the movable core 15 is inserted into the rectangular shield case 16 from its lower opening. Since the movable core 15 has a screw 21 formed on the outer peripheral surface, when the movable core 15 is inserted while being rotated, the movable core 15 meshes with the screw portions 24 and 24 provided on the inner shield case portion 16A. 15 is held in the square shield case 16.
次いで、可動コア１５内に、その下方開口からコイル１４と固定コア１３とを収容すべく、角形シールドケース１６を被せ、図３に示すように、外側のシールドケース部１６Ｂの下端に設けられている係止爪２５を基台１２の側面に設けられている係止溝２６に係合させると、角形シールドケース１６が基台１２に固定され、組立てが完了する。 Next, a rectangular shield case 16 is placed in the movable core 15 to accommodate the coil 14 and the fixed core 13 from the lower opening thereof, and is provided at the lower end of the outer shield case portion 16B as shown in FIG. When the engaging claw 25 is engaged with the engaging groove 26 provided on the side surface of the base 12, the rectangular shield case 16 is fixed to the base 12 and the assembly is completed.
このように構成されたコーナーセンサ用面実装トランス１１は、角形シールドケース１６の上面に設けられている丸孔２３からプラスドライバ等の工具を差し込み、該工具の先端を可動コア１５の十字溝２２に係合させ、該可動コア１５を回転させると、可動コア１５が上下方向に進退出して所望のインダクタンスを得られる。 The corner sensor surface-mount transformer 11 configured as described above inserts a tool such as a Phillips screwdriver from a round hole 23 provided on the upper surface of the square shield case 16, and the tip of the tool is inserted into the cross groove 22 of the movable core 15. When the movable core 15 is rotated, the movable core 15 advances and retreats in the vertical direction to obtain a desired inductance.
また、電子回路基板１９への実装時には、該電子回路基板１９上に配置されると、端子部１８ａが電子回路基板１９の図示せぬ導体部と接触し、さらにリフロー半田等の処理を施すと、端子部１８ａが導体部に半田付けされて、電子回路基板１９の実装面に取り付けられる。 Further, when mounting on the electronic circuit board 19, if it is arranged on the electronic circuit board 19, the terminal part 18 a comes into contact with a conductor part (not shown) of the electronic circuit board 19, and further processing such as reflow soldering is performed. The terminal portion 18a is soldered to the conductor portion and attached to the mounting surface of the electronic circuit board 19.
以上述べたように、本実施の形態によるコーナーセンサ用面実装トランス１１によれば、基板実装面に半田付けされる端子部１８ａと、コイル１４の絡げ部１４ａ及び巻き緩み部１４ｂが形成される端末処理部１８ｂとを分離させた構造にしているので、巻線切断時の巻線張力は、端子部１８ａに直接加わることがなく、コイル１４のリード部の絡げ処理時に、端子部１８ａに不要な曲りが生じない。また、端子部１８ａ側からの外力も端末処理部１８ｂには直接加わらない。したがって、端子部１８ａ側に変形が生じても、コイル１４の絡げ部１４ａ、巻き緩み部１４ｂには不要な力が生じない。仮に端末処理部１８ｂに外力が加わっても巻き緩み部１４ｂによりリード部に緩み構造があるため、外力が加わらず疲労断線しない構造である。該疲労断線に関しては、例えば３０００サイクルの耐久試験もクリヤしている。 As described above, according to the corner sensor surface-mount transformer 11 according to the present embodiment, the terminal portion 18a to be soldered to the board mounting surface, the binding portion 14a of the coil 14, and the loosened portion 14b are formed. Since the terminal processing section 18b is separated from the terminal processing section 18b, the winding tension at the time of winding cutting is not directly applied to the terminal section 18a. No unnecessary bending occurs. Further, the external force from the terminal portion 18a side is not directly applied to the terminal processing portion 18b. Therefore, even if deformation occurs on the terminal portion 18a side, unnecessary force does not occur in the binding portion 14a and the loosened portion 14b of the coil 14. Even if an external force is applied to the terminal processing portion 18b, the lead portion is loosened by the winding loose portion 14b, so that the external force is not applied and fatigue breakage is not caused. With respect to the fatigue disconnection, for example, a durability test of 3000 cycles has been cleared.
さらに、角形シールドケース１６内で、可動コア１５を回転させつつ進退させることにより、所望のインダクタンスを得ることができる。 Furthermore, a desired inductance can be obtained by moving the movable core 15 forward and backward while rotating in the square shield case 16.
また、角形シールドケース１６を内側のシールドケース部１６Ａと外側のシールドケース部１６Ｂとの二重のシールド構造にしているので、良好な磁気シールドが得られる。 Further, since the square shield case 16 has a double shield structure of the inner shield case portion 16A and the outer shield case portion 16B, a good magnetic shield can be obtained.
なお、本発明は、本発明の精神を逸脱しない限り種々の改変をなすことができ、そして、本発明が該改変されたものにも及ぶことは当然である。 The present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.
１ 面実装型トランス
２ 絶縁性基台
３ リード端子
４ 角形シールドケース
５ 絡げ部
６ 電子回路基板
１１ コーナーセンサ用面実装トランス
１２ 基台
１３ 固定コア
１３ａ 突出部
１４ コイル
１４ａ 絡げ部
１４ｂ 巻き緩み部
１５ 可動コア
１６ 角形シールドケース
１６Ａ 内側のシールドケース部
１６Ｂ 外側のシールドケース部
１７ 固定コア取付孔
１８ リード端子
１８ａ 端子部
１８ｂ 端末処理部
１８ｃ 連結部
１８ｄ 中間部位
１９ 電子回路基板
２１ ねじ
２２ 十字溝
２３ 丸孔
２４ ねじ部
２５ 係止爪
２６ 係止溝
DESCRIPTION OF SYMBOLS 1 Surface mount type transformer 2 Insulation base 3 Lead terminal 4 Square shield case 5 Tying part 6 Electronic circuit board 11 Surface mount transformer for corner sensors 12 Base 13 Fixed core 13a Protruding part 14 Coil 14a Tying part 14b Loose winding Part 15 Movable core 16 Square shield case 16A Inner shield case part 16B Outer shield case part 17 Fixed core mounting hole 18 Lead terminal 18a Terminal part 18b Terminal processing part 18c Connection part 18d Intermediate part 19 Electronic circuit board 21 Screw 22 Cross groove 23 Round hole 24 Screw part 25 Locking claw 26 Locking groove
Claims (4)
前記リード端子を、基板実装面に半田付けされる端子部と、該端子部よりも上方に位置し、且つ前記巻線のリード部を絡げる端末処理部とで構成し、前記端子部と前記端末処理部との間を前記基台に固定してなることを特徴とするコーナーセンサ用面実装トランス。 A corner sensor surface-mount transformer comprising a plurality of lead terminals protruding in a horizontal direction from an insulating base supporting a winding frame body on which windings are provided, and the lead portions of the windings being entangled. In
The lead terminal is composed of a terminal part soldered to the board mounting surface, and a terminal processing part located above the terminal part and entwining the lead part of the winding, and the terminal part A corner-mounting surface-mount transformer characterized in that a space between the terminal processing unit and the terminal processing unit is fixed to the base.
対向する二つの内側面にそれぞれねじ部を有するシールドケースと、前記コイルを収容すべく該コイルの直径よりも大きな内径で、外周面には前記シールドケースのねじ部と螺合するねじを有して前記コイルの外周を覆って配設され、前記シールドケース内で進退出して前記コイルのインダクタンスを可変する円筒状の可動コアとを備えるとともに、前記リード端子を、基板実装面に半田付けされる端子部と、該端子部よりも上方に位置し、且つ前記コイルのリード部を絡げる端末処理部とで構成し、前記端子部と前記端末処理部との間を前記基台に固定してなることを特徴とするコーナーセンサ用面実装トランス。 A drum-shaped core, a coil wound around the outer peripheral surface of the core, an insulating base provided at the lower end of the core, and a plurality of lead terminals protruding in a horizontal direction from the base; In a surface mount transformer for a corner sensor in which the lead portion of the coil is entangled with the corresponding lead terminal,
A shield case having a thread portion on each of two opposing inner surfaces, an inner diameter larger than the diameter of the coil to accommodate the coil, and an outer peripheral surface having a screw that engages with the thread portion of the shield case And a cylindrical movable core that moves forward and backward in the shield case to vary the inductance of the coil, and the lead terminal is soldered to the board mounting surface. A terminal portion and a terminal processing portion that is positioned above the terminal portion and entangles the lead portion of the coil, and the space between the terminal portion and the terminal processing portion is fixed to the base. Surface mount transformer for corner sensors.
2. The terminal processing section is composed of a binding section for soldering a lead portion of a winding, and a winding slack section where solder does not attach to the winding routing section. A surface mount transformer for a corner sensor according to 2 or 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006152667A JP2007214528A (en) | 2006-05-31 | 2006-05-31 | Surface-mounting transformer for corner sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006152667A JP2007214528A (en) | 2006-05-31 | 2006-05-31 | Surface-mounting transformer for corner sensor |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006033892A Division JP4788376B2 (en) | 2006-02-10 | 2006-02-10 | Surface mount type transformer |
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| JP2007214528A true JP2007214528A (en) | 2007-08-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012109408A (en) * | 2010-11-17 | 2012-06-07 | Sumida Corporation | Magnetic element |
| JP2012227033A (en) * | 2011-04-21 | 2012-11-15 | Mitsubishi Electric Corp | Terminal connection structure and connection method |
-
2006
- 2006-05-31 JP JP2006152667A patent/JP2007214528A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012109408A (en) * | 2010-11-17 | 2012-06-07 | Sumida Corporation | Magnetic element |
| US8736412B2 (en) | 2010-11-17 | 2014-05-27 | Sumida Corporation | Magnetic element |
| JP2012227033A (en) * | 2011-04-21 | 2012-11-15 | Mitsubishi Electric Corp | Terminal connection structure and connection method |
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