JPS60185380A - Plug-in type terminal - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明は、冷蔵庫等の電動圧縮機の外殻に設けた円柱状
の入力端子に直結して用いる差込式端子の改良に係り、
特に挿入作業性が良好で接触信頼の高い差込式端子に関
する。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an improvement of a plug-in terminal that is directly connected to a cylindrical input terminal provided on the outer shell of an electric compressor such as a refrigerator.
In particular, it relates to a plug-in terminal with good insertion workability and high contact reliability.

〔従来技術〕　− 従来の差込式端子を第１図〜第６図により説明する。１
は電動圧縮機であり、２は該電動圧縮機１の外殻１ａに
設けた入力端子である。３は前記入力端子２と結合する
ための差込式端子である。[Prior Art] - A conventional plug-in terminal will be explained with reference to FIGS. 1 to 6. 1
is an electric compressor, and 2 is an input terminal provided on the outer shell 1a of the electric compressor 1. 3 is a plug-in terminal for coupling with the input terminal 2.

前記差込式端子３には、両端部をハ字状に折曲した略三
角形状の開口部３ａが設けられ、かつ、この開口部３ａ
の内面には入力端子２の外形寸法より広い間隔の漏斗状
の案内部３ａ＋　と、入力端子２の外形寸法より狭い間
隔の直線状の接触部３ａｔが形成されている。また、接
触部３ａｘの一端部には、前記開口部３ａと直角方向に
折曲した電線４を接続する電線接続部３ｂが設けられて
いる。The plug-in terminal 3 is provided with a substantially triangular opening 3a with both ends bent into a V-shape, and this opening 3a
On the inner surface of the input terminal 2, a funnel-shaped guide portion 3a+ having a wider interval than the outer dimension of the input terminal 2 and a linear contact portion 3at having a narrower interval than the outer dimension of the input terminal 2 are formed. Furthermore, a wire connecting portion 3b is provided at one end of the contact portion 3ax to connect the wire 4 bent at right angles to the opening 3a.

５は前記差込式端子３の漏斗状の案内部３ａ＋側に開口
穴５ａを有する絶縁ケースである。Reference numeral 5 denotes an insulating case having an opening hole 5a on the funnel-shaped guide portion 3a+ side of the plug-in terminal 3.

かかる構成の差込式端子３を入力端子２に結合するには
、絶縁ケース５の開口穴５ａ側から入力端子２を挿入し
、入力端子２の先端２ａが差込式端子３の漏斗状の案内
部３ａ＋を押し広げた後、絶縁ケ・−ス５の−Ｌ面５ｈ
に当接するまで差し込めは良い。In order to connect the plug-in terminal 3 with such a configuration to the input terminal 2, insert the input terminal 2 from the opening hole 5a side of the insulating case 5 so that the tip 2a of the input terminal 2 is connected to the funnel-shaped plug-in terminal 3. After pushing out the guide part 3a+, -L side 5h of the insulating case 5
It is okay to insert it until it touches the .

上述の差込式端子３に於いて、接触開始点で（Ｊ入力端
子２の先端２ａか第４図に示す如く漏斗状の案内部３ａ
＋　と直線状の接触部３ａｘを結ぶ曲面３ａｍ　と接触
し、接触終止点では入力端子２の側面２ｂが第５図に示
す如く直線状の接触部３ａ■と接触する。一般に開［１
部３ａ全長りに占める有効接触長Ｌ　Ｈは、開Ｉ］ｒＧ
ＩＩ　３　ａ全長■・の１／３程度に設定された漏斗状
の案内部３ａ＋　と、プレス加工技術上の制限から差込
式端子３の板厚以下とすることが不可能である曲面３ａ
Ｉとにより、］／２程反が限界であった。In the above-mentioned plug-in terminal 3, at the contact start point (the tip 2a of the J input terminal 2 or the funnel-shaped guide part 3a as shown in FIG.
+ and a curved surface 3am connecting the linear contact portion 3ax, and at the end of the contact, the side surface 2b of the input terminal 2 contacts the linear contact portion 3a, as shown in FIG. Generally open [1
The effective contact length LH that occupies the entire length of the portion 3a is open I]rG
II 3 A funnel-shaped guide portion 3a+ set to approximately 1/3 of the total length of a, and a curved surface 3a that cannot be made smaller than the plate thickness of the plug-in terminal 3 due to limitations in press processing technology.
According to I, the limit was about 2/2.

この様に接触面積の小さな部分に電動圧縮機１の大きな
起動電流や運転電流を通電すると、電流密度が大きく温
度−に昇が高くなる欠点があった。When a large starting current or operating current of the electric compressor 1 is applied to a portion with a small contact area as described above, there is a drawback that the current density is large and the temperature rise becomes high.

特に、電動圧縮機１の運転、停止時の振動、衝撃等によ
る差込式端子３の接触圧力の減少分を見込まず使用する
と、接触圧力の減少→接触抵抗の増加→温度」二昇の増
加→熱なまけ発生−→接触圧力の減少の繰り返しによっ
て異常発熱から焼損に至る致命的欠陥があった。In particular, if the electric compressor 1 is used without taking into account the decrease in contact pressure of the plug-in terminal 3 due to vibrations, shocks, etc. when it is running or stopped, the contact pressure will decrease → contact resistance will increase → temperature will increase. → Occurrence of thermal lag - → Repeated decrease in contact pressure caused a fatal defect that led to abnormal heat generation and burnout.

これらの対策として、初期接触圧力を大きくする方法や
、銀めっきを施すなどによって接触信頼性を高める方法
が案出されていたが、前者では挿入作業性が著しく低下
し、後者では高価になる欠点かあった。As a countermeasure to these problems, methods have been devised to increase the initial contact pressure and to increase contact reliability by applying silver plating, but the former method significantly reduces insertion workability, and the latter method has the disadvantage of being expensive. There was.

また、漏斗状の案内部３ａ＋が外側に広げられているた
め、差込式端子３同志の絶縁距離が小さくなると共に、
これらを収納する絶縁ケース５が大きくなる欠点があっ
た。In addition, since the funnel-shaped guide portion 3a+ is expanded outward, the insulation distance between the plug-in terminals 3 becomes smaller, and
There is a drawback that the insulating case 5 that houses these items becomes large.

尚、前記差込式端子３から漏斗状の案内部３　ａｌを除
去すると、第６図に示す如（入力端子２の先端２ａか差
込式端子３の開口部３ａの端面と当接し、差し込み不能
となることは周知の通りである。Note that when the funnel-shaped guide portion 3 al is removed from the plug-in terminal 3, as shown in FIG. It is well known that this is impossible.

〔発明の目的〕[Purpose of the invention]

本発明の１」的は、挿入作業性に優れ、接触面積が大き
く接触信頼性の高い差込式端子を簡単、かつ、安価に提
供することにある。An object of the present invention is to simply and inexpensively provide a plug-in terminal that has excellent insertion workability, a large contact area, and high contact reliability.

〔発明の概要〕[Summary of the invention]

即ち、差込式端子の開口部の端面中央部対向位置に入力
端子の直径寸法より小さな一対のＶ字状切り込み部を設
け、このＶ字状切り込み部を入力端子挿入時の案内とす
ることにより上記欠点を除去せんとしたものである。That is, by providing a pair of V-shaped notches smaller than the diameter of the input terminal at opposing positions in the center of the end face of the opening of the plug-in terminal, and using these V-shaped notches as a guide when inserting the input terminal. This is an attempt to eliminate the above drawbacks.

〔発明の実施例〕[Embodiments of the invention]

以下、本発明の一実施例を第７図〜第１１図により説明
する。図に於いて従来と同一符号は同一物を示す。従来
と異なる点は、差込式端子３の入力端子２と接する開口
部３ａの端面３Ｃ中央部対向位置に入力端子２の直径よ
り小さな幅で板厚より深い一対のＶ字状切り込み部３ｇ
＜を設けたことである。An embodiment of the present invention will be described below with reference to FIGS. 7 to 11. In the figures, the same reference numerals as in the prior art indicate the same parts. The difference from the conventional one is that a pair of V-shaped notches 3g with a width smaller than the diameter of the input terminal 2 and deeper than the board thickness are provided at opposing positions in the center of the end surface 3C of the opening 3a that contacts the input terminal 2 of the plug-in terminal 3.
＜ is provided.

かかる構成の差込式端子３を入力端子２に結合するには
、絶縁ケース５の開口穴５ａ側から入力端子２を挿入し
、入力端子２の先端２ａが差込式端子３の一対の切り込
み部３　ａ４を押し広げた後、絶縁ケース５の上面５ｂ
に当接するまで差し込めば良い。In order to connect the plug-in terminal 3 with such a configuration to the input terminal 2, insert the input terminal 2 from the opening hole 5a side of the insulating case 5, so that the tip 2a of the input terminal 2 is connected to the pair of notches in the plug-in terminal 3. After spreading part 3 a4, the upper surface 5b of the insulating case 5
Just insert it until it touches the .

上述の差込式端子３に於いて、第８図の接触開始点では
入力端子２の先端２ａが第９図に示す如くＶ字状切り込
み部３ａ＜の傾斜面ｘ、ｙと接触を開始し、接触終止点
では入力端子２の側面２ｂが第１０図に示す如（直線状
の接触部３ａ！と接触する。In the above-mentioned plug-in terminal 3, at the contact start point in FIG. 8, the tip 2a of the input terminal 2 starts contacting the inclined surfaces x and y of the V-shaped notch 3a, as shown in FIG. , at the contact end point, the side surface 2b of the input terminal 2 comes into contact with the linear contact portion 3a! as shown in FIG.

この時、差込式端子３を自在に位置変化する様に配置し
て置けば、第１１図に示す如く差込式端子３と入力端子
２の先端２ａに位置ズレがあってもＶ字状切り込み部３
ａ４の作用効果によって、第１１図ｆＡ）、（Ｂ）に示
す如く入力端子２の先端２ａとＶ字状切り込み部３ａ４
の一方の傾斜面が接触した時点を過ぎたところから地方
のＶ字状切り込み部３ａａが引き寄せられ、ついには第
１１図（０）に示す如（両方のＶ字状切り込み部３ａｉ
の傾斜面と接触する様に位置ズレが修正される。At this time, if the plug-in terminal 3 is arranged so that its position can be changed freely, even if there is a positional shift between the plug-in terminal 3 and the tip 2a of the input terminal 2, it will form a V-shaped shape, as shown in FIG. Notch part 3
Due to the effect of a4, the tip 2a of the input terminal 2 and the V-shaped notch 3a4 as shown in FIG.
The local V-shaped notches 3aa are pulled together after the point where one of the inclined surfaces of the
The positional deviation is corrected so that it comes into contact with the inclined surface of.

また、入力端子２と差込式端子３の有効接触長Ｌ！は、
Ｖ字状切り込み部３８４を除く部分となる。このＶ字状
切り込み部３ａ４長Ｌ２は、入力端子２の挿入作業性、
即ち位置ズレ修正率から決まるＶ字状切り込み部３ａ４
の幅寸法Ｗとその時の修正時の挿入抵抗から決まる深さ
寸法Ｈから成る。幅寸法Ｗは入力端子２の直径の２／３
以下、深さ寸法は板厚の１．５倍量−Ｌにすれば良い。Also, the effective contact length L between input terminal 2 and plug-in terminal 3! teeth,
This is the portion excluding the V-shaped cut portion 384. The length L2 of this V-shaped notch 3a4 improves the workability of inserting the input terminal 2.
In other words, the V-shaped notch 3a4 is determined based on the positional deviation correction rate.
It consists of a width dimension W and a depth dimension H determined from the insertion resistance at the time of correction. Width dimension W is 2/3 of the diameter of input terminal 2
Hereinafter, the depth may be set to 1.5 times the plate thickness -L.

よって、本発明の差込式端子３では、開口部３ａ全長■
、の５／６程度を有効接触長り、とすることができる。Therefore, in the plug-in terminal 3 of the present invention, the entire length of the opening 3a is
The effective contact length can be approximately 5/6 of .

従って、従来品と同等の作業性を有したまま、従来品と
比較し接触面積が約１．７倍と増加し、その分だけ電流
密度が減少し温度」−昇を低くすることができる。その
結果、接触圧力が多少低下しても安定した接触状態が維
持できるので接触信頼性を大幅に向−Ｌできる効果があ
る。Therefore, while maintaining the same workability as the conventional product, the contact area is increased to about 1.7 times compared to the conventional product, the current density is reduced by that amount, and the temperature rise can be lowered. As a result, a stable contact state can be maintained even if the contact pressure decreases to some extent, which has the effect of significantly improving contact reliability.

また、初期接触圧力を下げることも可能でありその分だ
け挿入作業性の向上が図れる効果かある。It is also possible to lower the initial contact pressure, which has the effect of improving insertion workability.

その上、差込式端子３の外形寸法を小さくすることがで
き、差込式端子３同志の絶縁距離が拡大し、かつ、絶縁
ケース５の外形寸法を小さくすることができるので絶縁
性に優れ、小形で安価なものが得られる効果がある。Furthermore, the external dimensions of the plug-in terminal 3 can be reduced, the insulation distance between the plug-in terminals 3 can be expanded, and the external dimensions of the insulating case 5 can be reduced, resulting in excellent insulation. This has the effect of producing a small and inexpensive product.

尚、本発明品と従来品の材質、板厚が同一条件で比較し
た温度上昇試験結果を示すと表１の通りである。Table 1 shows the results of a temperature rise test comparing the product of the present invention and the conventional product under the same material and thickness conditions.

表　１ 第１２図は本発明の差込式端子を複数個用いて無接点起
動装置とした他の応用例を示すものである。本差込式端
子３は電線接続部３ｂをタブ端子としたものであり、本
発明は電線接続部３ｂの形状に何等左右されることなく
得られる効果がある。Table 1 FIG. 12 shows another application example of a non-contact starting device using a plurality of plug-in terminals of the present invention. The present plug-in terminal 3 has the electric wire connecting portion 3b as a tab terminal, and the present invention has an effect that can be obtained regardless of the shape of the electric wire connecting portion 3b.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、接触信頼性の向上はもとより挿入作業
性、絶縁性に優れた差込式端子を小形で安価に提供でき
る効果がある。According to the present invention, it is possible to provide a compact and inexpensive plug-in terminal that not only improves contact reliability but also has excellent insertion workability and insulation properties.

その上、従来の基本構造を大きく変えることなく得られ
るのでその実用的効果に大なるものがある。Moreover, since it can be obtained without greatly changing the conventional basic structure, it has great practical effects.

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

第１図は従来および本発明の差込式端子の取（−＝Ｊ構
造を示す分解斜視図、第２図は第１図の側断面図、第３
図は従来の差込式端子の拡大斜視図、第４図、第５図は
第２図の挿入状態を示す要部説明断面図、第６図は従来
の差込式端子から漏斗状の案内部を除去した場合の不具
合発生時の挿入状態を示す要部説明断面図、第７図は本
発明の差込式端子の要部拡大斜視図、第８図、第１０図
は第７図の挿入状態を示す要部説明断面図、第９図は第
８図の要部説明斜視図、第１１図は第８図に至る接触状
態の変化を説明する動作説明図、第１２図は本発明の応
用例を示す分解斜視図である。 １・・・電動圧縮機、１ａ・・・外殻、２・・・入力端
子、２ａ・・・先端、２ｂ・・・側面、３・・・差込式
端子、３ａ・・・開口部、３　ａ４・・・Ｖ字状切り込
み部、３ｃ・・・端面。 Ｙ１図 茎　２　図 事　３　旧 ） ａ−１ ≠キロ ３ａ、１ど５（Ｌ 寥６　図 ６ ＼ Ｆ′７図 第８　図 Ｖ、ｑ　圀 ｆＩＱ　図 Ｓシ ￥：１１図 ３の４ ｏＬ４Figure 1 is an exploded perspective view showing the conventional and present invention plug-in terminals (-=J structure; Figure 2 is a side sectional view of Figure 1;
The figure is an enlarged perspective view of a conventional plug-in terminal, Figures 4 and 5 are sectional views showing the main parts of the insertion state shown in Figure 2, and Figure 6 is a funnel-shaped guide from a conventional plug-in terminal. FIG. 7 is an enlarged perspective view of the main parts of the plug-in terminal of the present invention, and FIGS. 8 and 10 are the same as those shown in FIG. 7. 9 is a perspective view illustrating the main parts of FIG. 8, FIG. 11 is an operation explanatory diagram illustrating changes in the contact state leading to FIG. 8, and FIG. 12 is a diagram illustrating the present invention. FIG. DESCRIPTION OF SYMBOLS 1... Electric compressor, 1a... Outer shell, 2... Input terminal, 2a... Tip, 2b... Side surface, 3... Plug-in terminal, 3a... Opening, 3 a4...V-shaped notch, 3c... end surface. Y1 figure stem 2 figure 3 old) a-1 ≠ km3a, 1do5 (L 寥6 figure 6 ＼ F'7 figure 8 figure V, q 圀fIQ figure S ￥: 11 figure 3-4 oL4

Claims (1)

【特許請求の範囲】[Claims] 両端部を八字形に七１曲して略三角形状の開口部（３ａ
）を形成し、この開口部（３ａ）の内面に設けた直線状
の接触：１１（３ａ＊）と策動圧縮機（１）の外殻（１
ａ）に設けた円柱状の入力端子（２）の側面（２ｂ）を
嵌合接触させた差込式端子において、前記開口部（３ａ
）の端面（３ｃ）の中央部対向位置に入力端子（２）の
直径寸法より小さな一対のＶ字状切り込み部（３ａ４　
）を設け、このＶ字状切り込み部（３ａ４　）を入力端
子（２）の先端（２ａ）挿入時の案内としたことを特徴
とする差込式端子。Bend both ends into a figure eight shape to create a roughly triangular opening (3a
) and a linear contact provided on the inner surface of this opening (3a): 11 (3a*) and the outer shell (1) of the maneuvering compressor (1).
In the plug-in terminal in which the side surface (2b) of the cylindrical input terminal (2) provided in (a) is brought into fitting contact, the opening (3a
) A pair of V-shaped notches (3a4
), and this V-shaped notch (3a4) serves as a guide when inserting the tip (2a) of the input terminal (2).