JPH05109549A - Iron core for electric discharge lamp ballast - Google Patents

Abstract

PURPOSE:To simplify and automate manufacture by providing a plurality of calkings for an iron care thin plate along the magnetic passage of an iron core. CONSTITUTION:Magnetic passage of an iron core 10 is formed as shown with a dashed line I, and calkings 16a, 16b and 16c are formed, along the longitudinal direction, in the center of a main pillar 12a and also near the central part of both sides leg parts 12b and 12c of an E-shaped iron core thin plate 12. Mean while, calkings 16d, 16e and 16f are formed, along the longitudinal direction, at both ends of a main pillar 14a and near the central part of a center leg 14b of a T-shaped iron core thin plate 14. Each calking 16 is formed parallel with the direction of the magnetic passage I so as not to obstacle the magnetic passage I. As a result, aligning after punching out can be easily performed without affecting the magnetic passage, leading to simpler and more automated manufacture.

Description

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

【０００１】[0001]

【産業上の利用分野】本発明は放電灯安定器用鉄心、特
に組立て作業性の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an iron core for a discharge lamp ballast, and more particularly to an improvement in assembling workability.

【０００２】[0002]

【従来の技術】従来より放電灯等の安定点灯を図るため
に安定器が用いられており、該安定器は通常外鉄心と内
鉄心により形成されるコイル挿入部分に、巻線を巻回し
たボビンを挿入して構成される。鉄心としては例えばＥ
Ｔ型、ＥＩ型、ＥＥ型、ＥＩＥ型等各種形状のものがあ
るが、いずれもそれぞれＥ字型、Ｔ字型或いはＩ字型に
鉄製薄板を打抜き、その鉄心薄板を多数積層してＥ字型
コア、Ｔ型コア、Ｉ型コアを製造し、該コアを組合せて
鉄心を得ている。2. Description of the Related Art Conventionally, a ballast has been used for stable lighting of a discharge lamp or the like, and the ballast is normally wound around a coil insertion portion formed by an outer core and an inner core. It is constructed by inserting a bobbin. As the iron core, for example, E
There are various shapes such as T type, EI type, EE type, EIE type, etc., but in each case, E-shaped, T-shaped or I-shaped punched iron thin plates, and laminating a large number of iron core thin plates, E-shaped A die core, a T core, and an I core are manufactured, and the cores are combined to obtain an iron core.

【０００３】[0003]

【発明が解決しようとする課題】ところが、このように
鉄心薄板を多数打抜き、該薄板を整列して積層させ、さ
らに溶接もしくはビス止めすることは専ら人手に頼って
おり、安定器製造の自動化の大きな障害となっていた。
本発明は前記従来技術の課題に鑑みなされたものであ
り、その目的は製造の自動化を図ることのできる放電灯
安定器用鉄心を得ることにある。However, as described above, the punching of a large number of thin iron core plates, the thin plates being aligned and stacked, and further welding or screwing are exclusively dependent on human labor, and the automation of ballast manufacturing is automated. It was a big obstacle.
The present invention has been made in view of the above-mentioned problems of the prior art, and an object thereof is to obtain an iron core for a discharge lamp ballast that can be automated in manufacturing.

【０００４】[0004]

【課題を解決するための手段】前記目的を達成するため
に本出願の請求項１記載の放電灯安定器用鉄心は、鉄心
の磁路に沿って、鉄心薄板に複数のカシメを設けたこと
を特徴とする。In order to achieve the above object, an iron core for a discharge lamp ballast according to claim 1 of the present application has a plurality of crimps provided on an iron core thin plate along a magnetic path of the iron core. Characterize.

【０００５】また、本出願の請求項２記載の放電灯安定
器は、同一直線上にない３点以上のカシメを有すること
を特徴とする。Further, the discharge lamp ballast according to claim 2 of the present application is characterized in that it has three or more crimps which are not on the same straight line.

【０００６】[0006]

【作用】本発明にかかる放電灯安定器用鉄心は、前述し
たように鉄心薄板の所定位置に複数のカシメが設けられ
ているため、鉄心薄板を打抜き或いは切断した後に、該
鉄心薄板を一定の搬送路に従って順次排出すると、前後
の鉄心薄板のカシメ部分が嵌合し合い、鉄心薄板が整列
積層した状態で得られる。この結果、整列積層された鉄
心薄板を所定厚さ毎に採取し、溶接等の固定操作を行な
うことで、所望の鉄心を効率よく得ることができ、作業
の自動化を図ることもできる。Since the iron core for a discharge lamp ballast according to the present invention is provided with a plurality of crimps at predetermined positions of the iron core thin plate as described above, after the iron core thin plate is punched or cut, the iron core thin plate is conveyed at a constant rate. When the iron core thin plates are sequentially discharged according to the path, the caulked portions of the front and rear iron core thin plates are fitted to each other, and the iron core thin plates are aligned and stacked. As a result, a desired iron core can be efficiently obtained by collecting the aligned and laminated iron core thin plates for each predetermined thickness and performing a fixing operation such as welding, and the work can be automated.

【０００７】[0007]

【実施例】以下、図面に基づき本発明の好適な実施例に
ついて説明する。図１には本発明の一実施例にかかるＥ
Ｔ型鉄心が示されている。同図において、鉄心１０はＥ
字型鉄心薄板１２の積層体と、Ｔ字型鉄心薄板１４の積
層体とよりなり、両者の開口部分を対向させることで鉄
心を構成する。本発明において特徴的なことは、鉄心の
磁路に沿って複数のカシメを設けたことである。本実施
例において、鉄心１０の磁路は図中一点鎖線Ｉで示すよ
うに形成され、Ｅ字型鉄心薄板１２には主柱１２ａの中
心及び両側脚部１２ｂ，１２ｃの略中央部に、それぞれ
の長手方向にそってカシメ１６ａ，１６ｂ，１６ｃが形
成されている。各カシメ１６は磁路Ｉの方向に平行、す
なわちカシメ１６を構成する斜面はそれぞれ磁路Ｉと平
行であるため、該カシメ部分により磁路に影響がでるこ
とはない。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an E according to an embodiment of the present invention.
A T-shaped iron core is shown. In the figure, the iron core 10 is E
It is composed of a laminated body of the V-shaped iron core thin plates 12 and a laminated body of the T-shaped iron core thin plates 14, and the iron core is formed by making the opening portions of both sides face each other. A feature of the present invention is that a plurality of caulks are provided along the magnetic path of the iron core. In the present embodiment, the magnetic path of the iron core 10 is formed as shown by the one-dot chain line I in the figure, and the E-shaped iron core thin plate 12 is provided at the center of the main pillar 12a and the substantially central portions of the side legs 12b and 12c, respectively. The crimps 16a, 16b, 16c are formed along the longitudinal direction of the. Since each caulking 16 is parallel to the direction of the magnetic path I, that is, the slopes forming the caulking 16 are parallel to the magnetic path I, the caulking portion does not affect the magnetic path.

【０００８】一方、Ｔ字型鉄心薄板１４は主柱１４ａの
両端及び中央脚１４ｂの略中央にそれぞれ長手方向にそ
ってカシメ１６ｄ，１６ｅ，１６ｆが形成されている。
該カシメ１６も磁路Ｉの方向に平行に形成されており、
やはり磁路Ｉを妨げることがない。以上のように構成さ
れた鉄心薄板１２，１４が積層された場合、図２に示す
ように上方薄板１２のカシメ１６の裏面凸部が下方薄板
１２の表面凹部に嵌合し、両者は正確に位置決めされ
る。この位置決め状態は、鉄心薄板が多数積層された状
態でも連続され、打抜き或いは切断された鉄心薄板は所
定の位置関係で積層されることとなる。On the other hand, the T-shaped iron core thin plate 14 has crimps 16d, 16e and 16f formed along the longitudinal direction at both ends of the main pillar 14a and substantially at the center of the center leg 14b.
The caulking 16 is also formed parallel to the direction of the magnetic path I,
After all, it does not disturb the magnetic path I. When the iron core thin plates 12 and 14 configured as described above are stacked, the convex portion of the back surface of the caulking 16 of the upper thin plate 12 fits into the concave surface portion of the lower thin plate 12 as shown in FIG. Positioned. This positioning state is continued even when a large number of core thin plates are stacked, and the punched or cut core thin plates are stacked in a predetermined positional relationship.

【０００９】しかも本実施例では各鉄心薄板において、
二等辺三角形を形成するようにカシメが形成されている
ため、整列性は極めて良好である。そして、所定厚さと
なった鉄心薄板積層体を採取して、溶接、ネジ止め等に
より固定することで鉄心を製造することができる。図３
には本発明をＥＩＥ型鉄心に適用した例が示されてお
り、前記図１と対応する部分には符号１００を加えて示
し、説明を省略する。Moreover, in this embodiment, in each iron core thin plate,
Since the caulking is formed so as to form an isosceles triangle, the alignment is extremely good. Then, the iron core thin plate laminated body having a predetermined thickness is sampled and fixed by welding, screwing or the like to manufacture the iron core. Figure 3
1 shows an example in which the present invention is applied to an EIE type iron core. A portion corresponding to FIG.

【００１０】同図においては磁路は一点鎖線IIのように
形成され、この磁路にそってそれぞれ前記同様のカシメ
１１６が形成されている。すなわち、Ｅ型鉄心薄板１１
２は前記実施例と同様に主柱１１２ａ及び両側脚１１２
ｂ，１１２ｃに、その長手方向に沿ってカシメ１１６
ａ，１１６ｂ，１１６ｃが形成され、またＩ磁型鉄心薄
板１１４は、その両端に長手方向に直交したカシメ１１
６ｄ，１１６ｅを、また中央に長手方向に沿ったカシメ
１１６ｆを形成している。従って、各カシメ１１６はい
ずれも磁路IIに沿ったものとなる。以上のように構成さ
れた鉄心によっても前記同様の整列性を得ることがで
き、鉄心製造の工程簡略化、自動化を図ることができ
る。In the figure, the magnetic path is formed as shown by the alternate long and short dash line II, and caulking 116 similar to the above is formed along the magnetic path. That is, the E-type core thin plate 11
2 is a main pillar 112a and both side legs 112 as in the above embodiment.
b and 112c along the longitudinal direction of the
a, 116b, 116c are formed, and the I magnetic core thin plate 114 has the crimping 11 at both ends orthogonal to the longitudinal direction.
6d and 116e, and caulking 116f along the longitudinal direction is formed at the center. Therefore, each caulking 116 is along the magnetic path II. Even with the iron core configured as described above, the same alignment as described above can be obtained, and the manufacturing process of the iron core can be simplified and automated.

【００１１】なお、本発明においてカシメ深さは、鉄心
薄板厚さの２倍程度までが好適である。これ以上となる
と薄板の亀裂或いは磁束変化が生じることがある。In the present invention, the crimping depth is preferably up to about twice the thickness of the thin iron core plate. If it is more than this, cracks in the thin plate or changes in magnetic flux may occur.

【００１２】[0012]

【発明の効果】以上説明したように本発明にかかる放電
灯安定器用鉄心によれば、鉄心薄板に、鉄心の磁路に沿
って複数のカシメを設けることにより、磁路に影響を与
えることなく打抜き後の整列を簡易に行ない、製造の簡
略化、自動化を図ることが可能となる。As described above, according to the iron core for a discharge lamp ballast according to the present invention, the thin iron core is provided with a plurality of crimps along the magnetic path of the iron core without affecting the magnetic path. Alignment after punching can be easily performed, and simplification and automation of manufacturing can be achieved.

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

【図１】本発明の一実施例にかかる鉄心の説明図であ
る。FIG. 1 is an explanatory diagram of an iron core according to an embodiment of the present invention.

【図２】図１に示した鉄心薄板の積層状態の説明図であ
り、同図（Ａ）は断面図、（Ｂ）は上面図である。2A and 2B are explanatory views of a laminated state of the iron core thin plates shown in FIG. 1, in which FIG. 2A is a sectional view and FIG. 2B is a top view.

【図３】本発明の他の実施例の鉄心の説明図である。FIG. 3 is an explanatory diagram of an iron core according to another embodiment of the present invention.

【符号の説明】[Explanation of symbols]

１０，１１０ 鉄心 １２，１４，１１２，１１４ 鉄心薄板 １６，１１６ カシメ 10,110 Iron core 12,14,112,114 Iron core thin plate 16,116 Caulking

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 所定形状に成型された多数の鉄心薄板を
積層して形成される鉄心において、 前記鉄心の磁路に沿って、鉄心薄板に複数のカシメを設
けたことを特徴とする放電灯安定器用鉄心。1. A discharge lamp, comprising: an iron core formed by laminating a large number of iron core thin plates formed in a predetermined shape, wherein a plurality of crimps are provided on the iron core thin plate along a magnetic path of the iron core. Iron core for ballast. 【請求項２】 請求項１記載の鉄心において、同一直線
上にない３点以上のカシメを有することを特徴とする放
電灯安定器用鉄心。2. The iron core for a discharge lamp ballast according to claim 1, which has three or more crimps which are not on the same straight line.