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JPH0326522B2 - - Google Patents
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JPH0326522B2 - - Google Patents

Info

Publication number
JPH0326522B2
JPH0326522B2 JP59107808A JP10780884A JPH0326522B2 JP H0326522 B2 JPH0326522 B2 JP H0326522B2 JP 59107808 A JP59107808 A JP 59107808A JP 10780884 A JP10780884 A JP 10780884A JP H0326522 B2 JPH0326522 B2 JP H0326522B2
Authority
JP
Japan
Prior art keywords
resistor
eccentricity
inner periphery
convex portion
view
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.)
Expired - Lifetime
Application number
JP59107808A
Other languages
Japanese (ja)
Other versions
JPS60251602A (en
Inventor
Chota Kusunoki
Shigeru Natsume
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP59107808A priority Critical patent/JPS60251602A/en
Publication of JPS60251602A publication Critical patent/JPS60251602A/en
Publication of JPH0326522B2 publication Critical patent/JPH0326522B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Adjustable Resistors (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)

Description

【発明の詳細な説明】 産業上の利用分野 本発明は電子部品のインサート成形分野の抵抗
体偏心止めに関するものである。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an eccentric stop for a resistor in the field of insert molding of electronic parts.

従来例の構成とその問題点 近年、抵抗体偏心止めは電子部品製造において
インサート成形が多く用いられるようになり、抵
抗体の樹脂による複合成形でインサートされる場
合が多くなつてきているなかで、特性向上の為重
要視されている。
Structure of conventional examples and their problems In recent years, insert molding has been increasingly used for eccentric resistor stoppers in the manufacture of electronic parts. It is considered important for improving characteristics.

以下図面を参照しながら、上述したような従来
例について説明する。
The conventional example described above will be described below with reference to the drawings.

第1図は抵抗体がインサート成形された従来例
を示すものである。第2図は抵抗体の正面図であ
る。第1図において、1は抵抗体である。2は樹
脂である。3は成形加工時のゲートである。
FIG. 1 shows a conventional example in which the resistor is insert-molded. FIG. 2 is a front view of the resistor. In FIG. 1, 1 is a resistor. 2 is resin. 3 is a gate during molding.

以上のように構成された従来例について、以下
その動作について説明する。
The operation of the conventional example configured as described above will be described below.

まず、第1図において端子部は省略してある
が、抵抗体を成形金型においてインサート成形す
ると、ゲート位置が中央部にない為、抵抗体が樹
脂の射出圧力によつて偏心、あるいはわん曲して
しまうという欠点を有していた。そして、もしゲ
ートを中央部にもつてきて、ゲート位置を二箇所
左右対称に配置しても完全に左右のバランスをと
ることは困難であつた。
First, although the terminal part is omitted in Figure 1, when the resistor is insert-molded in a mold, the gate position is not in the center, so the resistor becomes eccentric or curved due to the injection pressure of the resin. It had the disadvantage of causing Even if the gates were brought to the center and the gate positions were arranged symmetrically in two places, it was difficult to achieve perfect left-right balance.

発明の目的 本発明は上記欠点に鑑み、抵抗体の偏心を最小
限にとどめる為の抵抗体偏心止めを提供するもの
である。
OBJECTS OF THE INVENTION In view of the above drawbacks, the present invention provides a resistor eccentricity stop for minimizing the eccentricity of the resistor.

発明の構成 この目的を達成するために本発明の抵抗体偏心
止めは、インサート成形時、抵抗体のインサート
成形金型キヤビテイに上記抵抗体の内周に周接す
る凸部を設け、抵抗体偏心止めとすることによ
り、抵抗体の位置を規制し、偏心を最小限にとど
めるものである。
Structure of the Invention In order to achieve this object, the resistor eccentric stopper of the present invention provides a convex portion circumferentially surrounding the inner periphery of the resistor element in the insert molding mold cavity of the resistor element during insert molding. By doing so, the position of the resistor is regulated and eccentricity is kept to a minimum.

実施例の説明 以下本発明の一実施例について、図面を参照し
ながら説明する。
DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

第3図は本発明の実施例における抵抗体偏心止
めを示す正面図である。第4図は第3図のA−
A′断面図である。第3図、第4図において、1
は抵抗体、2は樹脂、3はゲート、4は抵抗体偏
心止めによる凹部である。
FIG. 3 is a front view showing a resistor eccentric stop in an embodiment of the present invention. Figure 4 is A- in Figure 3.
It is an A′ cross-sectional view. In Figures 3 and 4, 1
2 is a resistor, 2 is a resin, 3 is a gate, and 4 is a recess formed by eccentricity of the resistor.

上記第4図に明らかなように、抵抗体偏心止め
による凹部は抵抗体1の内周5に設けられたもの
であり、インサート成形金型キヤビテイにこれに
対応する上記抵抗体の内周5に周接する凸部を設
けることで形成するものである。
As is clear from FIG. 4 above, the recess for preventing eccentricity of the resistor is provided on the inner periphery 5 of the resistor 1, and the corresponding inner periphery 5 of the resistor is inserted into the insert mold cavity. It is formed by providing a circumferential convex portion.

以上のように構成された抵抗体偏心止めについ
て、以下その動作を説明する。
The operation of the resistor eccentric stop configured as described above will be described below.

まず成形金型に抵抗体が入り、型締めされる時
成形金型キヤビテイの抵抗体の内周5に周接する
凸部により、抵抗体の位置が規制され、ゲート3
より樹脂が射出され成形される。
First, the resistor is inserted into the mold, and when the mold is clamped, the position of the resistor is regulated by the convex portion surrounding the inner periphery 5 of the resistor in the mold cavity, and the gate 3
The resin is then injected and molded.

以上のように本実施例によれば、成形金型キヤ
ビテイに抵抗体の内周に周接する凸部を設け抵抗
体偏心止めとすることにより、前記凸部の規制に
よつて、抵抗体の偏心を最小限にとどめることが
できる。
As described above, according to this embodiment, by providing a convex portion in contact with the inner periphery of the resistor in the mold cavity to prevent eccentricity of the resistor, the eccentricity of the resistor can be prevented by regulating the convex portion. can be kept to a minimum.

なお、本実施例において抵抗体の偏心止めによ
る凹部4の形状については、本実施例以外の形状
であつても偏心を防止するものであれば、同じよ
うな働きをすることはいうまでもない。
As for the shape of the concave portion 4 used to prevent eccentricity of the resistor in this embodiment, it goes without saying that even if the shape is other than that of this embodiment, it will work in the same way as long as it prevents eccentricity. .

発明の効果 以上のように本発明はインサート成形加工時、
被インサート物の偏心を防止するインサート成形
金型キヤビテイに抵抗体の内周を周接する凸部よ
りなる抵抗体偏心止めを設けることにより、イン
サート成形時、抵抗体の偏心を最小限にとどめる
ことができ、可変抵抗器としての特性上摺動雑音
の変化等においてきわめて良い特性を確保するこ
とができ、その実用的効果は大なるものがある。
Effects of the Invention As described above, the present invention provides
By providing a resistor eccentricity stopper consisting of a convex portion surrounding the inner periphery of the resistor in the insert molding mold cavity to prevent eccentricity of the inserted object, eccentricity of the resistor can be minimized during insert molding. As a variable resistor, it is possible to secure extremely good characteristics in terms of changes in sliding noise, etc., and its practical effects are great.

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

第1図は従来例の抵抗体のインサート状態を示
す正面図、第2図は抵抗体の正面図、第3図は本
発明の実施例における抵抗体のインサート状態を
示す正面図、第4図は第3図のA−A′断面図で
ある。 1……抵抗体、2……樹脂、3……ゲート、4
……抵抗体偏心止めによる凹部、5……抵抗体の
内周。
FIG. 1 is a front view showing the inserted state of a resistor in the conventional example, FIG. 2 is a front view of the resistor, FIG. 3 is a front view showing the inserted state of the resistor in the embodiment of the present invention, and FIG. 3 is a sectional view taken along line A-A' in FIG. 3. 1...Resistor, 2...Resin, 3...Gate, 4
...Recessed portion by eccentric stopper of the resistor, 5...Inner periphery of the resistor.

Claims (1)

【特許請求の範囲】[Claims] 1 抵抗体の内周に周接するインサート成形金型
キヤビテイに設けた凸部によつて形成した抵抗体
偏心止め。
1. A resistor eccentric stop formed by a convex portion provided in an insert molding mold cavity surrounding the inner periphery of the resistor.
JP59107808A 1984-05-28 1984-05-28 Resistor deviation stopper Granted JPS60251602A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59107808A JPS60251602A (en) 1984-05-28 1984-05-28 Resistor deviation stopper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59107808A JPS60251602A (en) 1984-05-28 1984-05-28 Resistor deviation stopper

Publications (2)

Publication Number Publication Date
JPS60251602A JPS60251602A (en) 1985-12-12
JPH0326522B2 true JPH0326522B2 (en) 1991-04-11

Family

ID=14468556

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59107808A Granted JPS60251602A (en) 1984-05-28 1984-05-28 Resistor deviation stopper

Country Status (1)

Country Link
JP (1) JPS60251602A (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5771306U (en) * 1980-10-17 1982-04-30
JPS57150445U (en) * 1981-03-16 1982-09-21

Also Published As

Publication number Publication date
JPS60251602A (en) 1985-12-12

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