JPS6342500Y2 - - Google Patents

Description

【考案の詳細な説明】 本考案は、コイル、トランス等の巻線機器に関
し、鉄心上にボビンを一体成型により形成するよ
うした巻線機器に関する。[Detailed Description of the Invention] The present invention relates to a winding device such as a coil or a transformer, and more particularly, to a winding device in which a bobbin is integrally formed on an iron core.

第１図乃至第５図は従来の巻線機器の例を示す
もので、筒状のボビン本体１の両端に巻線を受け
るための鍔部２を設けたボビン３と、ボビン３に
挿通されるＩ型鉄心４と、Ｅ型鉄心とにより巻線
機器６が構成されている。 Figures 1 to 5 show examples of conventional winding equipment, including a bobbin 3 having flanges 2 at both ends of a cylindrical bobbin body 1 for receiving winding wire, and a bobbin 3 that is inserted through the bobbin 3. A winding device 6 is constituted by an I-type core 4 and an E-type core.

然し乍ら、かかる巻線機器６では、ボビン３の
中空部内壁とは間隙をもつて、鉄心４がボビン３
の中空部に単に挿通されているだけであるので、
鉄心４の長手方向におけるボビン３の位置を決め
にくゝ、従つて、ボビン３の鉄心４上での位置が
一定とならず巻線機器６の電気的特性がばらつい
てしまう。また、鉄心４とボビン３の中空部内壁
との間に間隙をもつ必要があることから、この間
隙の分だけ、ボビン３の大きさが制限されて巻線
の占積率を上げることが困難である。 However, in such a winding device 6, the iron core 4 is connected to the bobbin 3 with a gap from the inner wall of the hollow part of the bobbin 3.
Since it is simply inserted into the hollow part of
It is difficult to determine the position of the bobbin 3 in the longitudinal direction of the iron core 4, and therefore the position of the bobbin 3 on the iron core 4 is not constant, resulting in variations in the electrical characteristics of the winding device 6. In addition, since it is necessary to have a gap between the iron core 4 and the inner wall of the hollow part of the bobbin 3, the size of the bobbin 3 is limited by this gap, making it difficult to increase the space factor of the winding. It is.

これに対し、巻線の占積率を上げるために鉄心
４とボビン３とを一体成型することによつて、前
述の空隙を排してボビン３の周胴の肉厚を薄くし
て、同時にボビン３の鉄心４上での位置を一定と
する方法も考えられる。しかし、この一体成型法
によつても次のような問題点がある。第３図に示
すように、鉄心４の表面にボビン３の鍔部２に該
当する部分より図示矢印の方向に樹脂を注入した
場合、鉄心４の裏面側に樹脂が充填されるまで
は、金型との間に空隙が生じているため射出圧力
により鉄心４の金型によつて支持されていない部
分が撓み、鉄心４の一部にそりを生じてしまい、
鉄心４の一部表面がボビン周胴から露出してしま
う恐れがある。 On the other hand, in order to increase the space factor of the winding, by integrally molding the iron core 4 and the bobbin 3, the above-mentioned void can be eliminated and the wall thickness of the circumferential body of the bobbin 3 can be reduced, and at the same time A method of keeping the position of the bobbin 3 on the iron core 4 constant is also considered. However, even this integral molding method has the following problems. As shown in FIG. 3, when resin is injected into the surface of the iron core 4 from the part corresponding to the flange 2 of the bobbin 3 in the direction of the arrow shown in the figure, the resin is not filled until the back side of the iron core 4 is filled with resin. Since there is a gap between the mold and the mold, the part of the core 4 that is not supported by the mold is bent due to the injection pressure, causing a part of the core 4 to warp.
There is a possibility that a part of the surface of the iron core 4 may be exposed from the bobbin circumference.

また、第４図に示すように、ボビン３の下辺周
胴ｔ２を上辺周胴ｔ１よりも肉厚にして樹脂の鉄
心４下面部への充填が先に行なわれるように工夫
しても、なおも鉄心の露出防止対策として万全で
なく、また下辺周胴を肉厚に形成する分だけ巻線
の占積率が下がる難点を除去しきれない。特に、
このような射出成形によれば、第５図に示すよう
に、鉄心４の上面の鍔部２より外方に端子台の取
付けなどのためにボビン３を延長した場合には、
金型によつて支持されない鉄心表面々積がその分
だけ減るため鉄心４のそりはより大きくなり、そ
りについての前述の問題点は更に深刻となる。 Further, as shown in FIG. 4, even if the lower circumferential body t2 of the bobbin 3 is made thicker than the upper circumferential body t1 so that the resin is filled into the lower surface of the iron core 4 first, the problem still remains. However, it is not perfect as a measure to prevent exposure of the iron core, and it cannot eliminate the disadvantage that the space factor of the winding decreases as the lower circumferential shell is made thicker. especially,
According to such injection molding, as shown in FIG. 5, when the bobbin 3 is extended outward from the flange 2 on the upper surface of the iron core 4 for the purpose of attaching a terminal block, etc.
Since the surface area of the core that is not supported by the mold is reduced accordingly, the warpage of the core 4 becomes greater, and the above-mentioned problems regarding warpage become even more serious.

本考案はかかる問題点に鑑みてなされたもので
あつて、鉄心上にボビンを一体成型する際に鉄心
にそりを生ぜしめることなく、且つ、鉄心端部に
おいてボビンが鉄心から浮き上がることを防止し
得る巻線機器の構成を提供するところにある。 The present invention has been developed in view of these problems, and is designed to prevent warping of the core when integrally molding the bobbin on the core, and to prevent the bobbin from lifting up from the core at the end of the core. The purpose is to provide the configuration of winding equipment that can be obtained.

第６図乃至第８図は本考案の実施例を示すもの
で、ボビン３の鍔部２より外方に端子７を支持す
るための端子受部８を設けてボビン本体１を形成
し、端子受部８の中央部分から鉄心４を抱くよう
にして、ボビン本体の互いに対向する上下周胴辺
間を橋絡する連結部を設けているものである。 6 to 8 show an embodiment of the present invention, in which the bobbin body 1 is formed by providing a terminal receiving part 8 for supporting the terminal 7 outward from the collar part 2 of the bobbin 3, and the terminal A connecting portion is provided to hold the iron core 4 from the central portion of the receiving portion 8 and to bridge the upper and lower circumferential sides of the bobbin body that are opposed to each other.

本実施例においては、連結部９がボビン本体１
の対向する上下周胴辺を橋絡するので、図示矢印
方向に樹脂を注入して一体成型を行う際に、連結
部９が樹脂の流路としての役目を果し、鉄心４下
面への樹脂充填を円滑にし鉄心４のそりを防止し
得るものであり、結果、ボビン本体の周胴辺を薄
くして巻線機器６における巻線の占積率を上げる
ことができるものである。しかも連結部９がボビ
ン本体１の対向部分間を鉄心４方向に引つ張るた
め鉄心４からボビン３が浮き上がることを防止で
きるものである。 In this embodiment, the connecting portion 9 is connected to the bobbin body 1.
Since the connecting portion 9 bridges the opposing upper and lower circumferential sides of the core 4, when the resin is injected in the direction of the arrow shown in the figure to perform integral molding, the connecting portion 9 serves as a flow path for the resin, and the resin flows to the lower surface of the core 4. This allows for smooth filling and prevents warpage of the iron core 4, and as a result, the circumference of the bobbin body can be made thinner, thereby increasing the space factor of the winding wire in the winding device 6. Moreover, since the connecting portion 9 pulls the opposing portions of the bobbin body 1 in the direction of the iron core 4, it is possible to prevent the bobbin 3 from lifting off from the iron core 4.

なお、ボビン３の連結部９を第９図及び第１０
図に示すように、鉄心部分に加工を施して鉄心の
外方に突出させないようにすれば、巻線機器６の
形状に影響を及ぼすことがないという効果を得る
こともできる。 The connecting portion 9 of the bobbin 3 is shown in FIGS. 9 and 10.
As shown in the figure, by processing the iron core so that it does not protrude outward, it is possible to obtain the effect that the shape of the winding device 6 is not affected.

このように、本考案は、鉄心上に一体成型され
る筒状のボビンを備える巻線機器において、ボビ
ンの少なくとも一端の互いに対向する周胴辺間を
橋絡する連結部を上記ボビンに付加したため、成
型時に鉄心に加わる射出圧力を連結部の存在によ
つて軽減でき、結果、ボビン本体の周胴辺を薄く
して巻線の占積率を上げることができるものであ
り、更に、鉄心の鍔部より更に外方に端子台取付
けなどのために、ボビン端を延出した際にもこの
延出部分が鉄心から浮き上がることを防止できる
ものである。 As described above, the present invention provides a winding device including a cylindrical bobbin integrally molded on an iron core, in which a connecting portion is added to the bobbin to bridge the mutually opposing circumferential sides of at least one end of the bobbin. , the injection pressure applied to the iron core during molding can be reduced by the presence of the connecting part, and as a result, the circumference of the bobbin body can be made thinner and the space factor of the winding wire can be increased. Even when the end of the bobbin is extended further outward from the flange for mounting a terminal block, etc., this extended portion can be prevented from floating up from the iron core.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図乃至第５図は従来例を示し、第１図は全
体斜視図、第２図は要部斜視図、第３図イ，ロは
各々同上の側面図、断面図、第４図イ，ロ及び第
５図イ，ロは各々別の従来例を示す要部側面図、
要部断面図であり、第６図乃至第８図は本考案の
実施例を示すもので、第６図は全体斜視図、第７
図は要部斜視図、第８図は同上断面図であり、第
９図及び第１０図は各々異なる実施例を示す一部
省略の要部斜視図である。 １…ボビン本体、２…鍔部、９…連結部。 1 to 5 show a conventional example, where FIG. 1 is an overall perspective view, FIG. 2 is a perspective view of main parts, FIGS. , B and FIGS. 5A and 5B are side views of main parts showing different conventional examples, respectively.
6 to 8 show embodiments of the present invention; FIG. 6 is an overall perspective view; FIG. 7 is a sectional view of main parts;
8 is a sectional view of the same as above, and FIGS. 9 and 10 are partially omitted perspective views of important parts showing different embodiments. 1... Bobbin main body, 2... Flange part, 9... Connecting part.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 鉄心と、鉄心上に一体成型される筒状のボビン
とを有し、ボビンの少なくとも一端の互いに対向
する周胴辺間を橋絡する連結部を上記ボビンに設
けたことを特徴とする巻線機器。 A winding wire comprising an iron core and a cylindrical bobbin integrally molded on the iron core, and characterized in that the bobbin is provided with a connecting portion bridging mutually opposing circumferential sides of at least one end of the bobbin. device.