JP2001315201A - Pressing tool for assembling ambient temperature shrinkable tube unit - Google Patents
Pressing tool for assembling ambient temperature shrinkable tube unitInfo
- Publication number
- JP2001315201A JP2001315201A JP2000138960A JP2000138960A JP2001315201A JP 2001315201 A JP2001315201 A JP 2001315201A JP 2000138960 A JP2000138960 A JP 2000138960A JP 2000138960 A JP2000138960 A JP 2000138960A JP 2001315201 A JP2001315201 A JP 2001315201A
- Authority
- JP
- Japan
- Prior art keywords
- cold
- shrinkable tube
- pressing plates
- pressing
- assembling
- 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.)
- Granted
Links
Landscapes
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Processing Of Terminals (AREA)
- Cable Accessories (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明に係る常温収縮チュ
ーブユニット組立用押圧治具は、例えば架橋ポリエチレ
ン絶縁電力ケーブル（ＣＶケーブル）等の高圧電力ケー
ブルを構成するケーブル導体の端部同士を接続する為の
直線接続部を構成する為の常温収縮チューブユニットを
組み立てるべく、常温収縮チューブを拡径治具に向け軸
方向に押圧する為に使用する。The pressing jig for assembling a cold-shrinkable tube unit according to the present invention is for connecting the ends of cable conductors constituting a high-voltage power cable such as a cross-linked polyethylene insulated power cable (CV cable). This is used to press the cold shrinkable tube in the axial direction toward the diameter increasing jig to assemble the cold shrinkable tube unit for forming the linear connection portion.
【０００２】[0002]
【従来の技術】高圧電力ケーブルの端部同士の接続作業
を比較的容易に行なえる構造として、弾性材であるゴム
により造った常温収縮チューブ（プレモールドスリー
ブ）により、１対の電力ケーブルを構成するケーブル導
体同士の接続部を覆う構造が知られている。図３は、こ
の様な常温収縮チューブを使用する電力ケーブルの直線
接続部の１例を示している。2. Description of the Related Art A pair of power cables is constituted by a room-temperature shrinkable tube (pre-mold sleeve) made of rubber, which is an elastic material, as a structure capable of relatively easily connecting the ends of a high-voltage power cable. A structure for covering a connection portion between cable conductors is known. FIG. 3 shows an example of a straight-line connection portion of a power cable using such a cold-shrinkable tube.
【０００３】互いに接続すべき１対の電力ケーブル１、
１は、それぞれがケーブル導体２の周囲をケーブル絶縁
体３により被覆して成る。これら１対の電力ケーブル
１、１のケーブル導体２の端部でそれぞれ上記ケーブル
絶縁体３から突出した部分同士は、接続スリーブ４によ
り接続している。そして、この接続スリーブ４の周囲
を、常温収縮チューブ５により覆っている。この常温収
縮チューブ５は、高分子材料の一種であるゴムにより円
筒状に構成されたもので、絶縁性を有するゴム製の絶縁
筒部６の軸方向中間位置の内周面部分に、半導電性を有
するゴム製の内部電極７を包埋し、外周面を半導電性を
有するゴム製の外部電極８により覆って成る。[0003] A pair of power cables 1 to be connected to each other,
1 comprises a cable conductor 2 covered with a cable insulator 3. Portions of the pair of power cables 1 and 1 protruding from the cable insulator 3 at ends of the cable conductors 2 are connected by a connection sleeve 4. The periphery of the connection sleeve 4 is covered with a cold shrink tube 5. The cold-shrinkable tube 5 is formed in a cylindrical shape from rubber, which is a kind of polymer material, and is provided with a semiconductive material at an axially intermediate portion of an inner circumferential surface of an insulating cylindrical portion 6 made of rubber having insulating properties. A rubber internal electrode 7 having a property is embedded, and an outer peripheral surface is covered with a semiconductive rubber external electrode 8.
【０００４】上述の様な常温収縮チューブ５は、上記１
対の電力ケーブル１、１のケーブル導体２の端部同士を
接続スリーブ４により接続するのに先立って、何れか一
方の電力ケーブル１に予め挿通しておく。尚、上記常温
収縮チューブ５の内径側には、この常温収縮チュ−ブ５
を拡径状態に保持する為の円筒状の保持スリーブが、工
場若しくは現場で、予め挿入されている。従って、この
常温収縮チューブ５は、縮径方向の弾力を付与された状
態とされている。そして、上記１対の電力ケーブル１、
１のケーブル導体２の端部同士を接続スリーブ４により
接続した後、上記常温収縮チューブ５を、上記１対の電
力ケーブル１、１を構成するケーブル絶縁体３、３同士
の間に掛け渡す位置に移動させてから、上記保持スリー
ブを上記常温収縮チューブ５の内径側から抜き取る。[0004] The cold shrinkable tube 5 as described above is provided with the above 1
Prior to connecting the ends of the cable conductors 2 of the pair of power cables 1 and 1 with the connection sleeve 4, one of the power cables 1 is inserted in advance. The cold shrink tube 5 is provided on the inner diameter side of the cold shrink tube 5.
A cylindrical holding sleeve for holding the tube in an expanded state is previously inserted at a factory or site. Therefore, the cold shrinkable tube 5 is in a state where elasticity in the diameter reducing direction is given. Then, the pair of power cables 1,
After the ends of the cable conductors 2 are connected to each other by the connection sleeve 4, the cold shrinkable tube 5 is placed between the cable insulators 3 constituting the pair of power cables 1. After that, the holding sleeve is removed from the inner diameter side of the cold-shrinkable tube 5.
【０００５】この様にして保持スリーブを常温収縮チュ
ーブ５の内径側から抜き取る事に伴い、この常温収縮チ
ューブ５が自身の弾性により縮径し、この常温収縮チュ
ーブ５の両端部内周面を、上記各電力ケーブル１、１を
構成するケーブル絶縁体３、３の端部外周面に弾性的に
当接させる。[0005] As the holding sleeve is removed from the inner diameter side of the cold shrink tube 5 in this manner, the cold shrink tube 5 is reduced in diameter by its own elasticity. Each of the power cables 1 is elastically brought into contact with an end outer peripheral surface of the cable insulator 3.
【０００６】上述の様な電力ケーブルの直線接続部を構
成する、上記常温収縮チューブ５は、工場で上記保持ス
リーブとを組み合わせて常温収縮チューブユニットを構
成し、このユニットを上記直線接続部を組み立てる工事
現場に搬送して、上記何れか一方の電力ケーブル１の中
間部に外嵌する。そして、上述の様に、１対の電力ケー
ブル１、１を構成するケーブル導体２同士を上記接続ス
リーブ４により接続してから、これら両ケーブル１、１
を構成するケーブル絶縁体３、３同士の間に掛け渡す位
置に移動させ、次いで、上記保持スリーブを上記常温収
縮チューブ５の内径側から抜き取る。The above-mentioned cold-shrinkable tube 5 constituting the above-mentioned straight-line connection portion of the power cable constitutes a cold-shrinkable tube unit by combining the above-mentioned holding sleeve at the factory, and assembles this unit into the above-mentioned straight-line connection portion. It is conveyed to a construction site and externally fitted to an intermediate portion of one of the power cables 1. Then, as described above, after the cable conductors 2 constituting the pair of power cables 1 and 1 are connected to each other by the connection sleeve 4, the cables 1 and 1 are connected to each other.
Then, the holding sleeve is removed from the inner diameter side of the cold-shrinkable tube 5.
【０００７】この様な、常温収縮チューブ５と保持スリ
ーブとを組み合わせて常温収縮チューブユニットを組み
立てる作業は、図４に示す様に、拡径治具９と押圧治具
１０とを備えた組立装置により行なっている。このうち
の拡径治具９は、上記常温収縮チューブ５をその直径が
縮まった状態で外嵌自在な小径円杆部１１の軸方向一端
（図４の右端）と、上記常温収縮チューブ５をその直径
を広げた状態で外嵌自在な大径円筒部１２の軸方向一端
（図４の左端）とを、円すい面状のガイド傾斜部１３に
より連続させて成る。上記常温収縮チューブ５を外嵌す
べき保持スリーブ１４は、上記大径円筒部１２の内側に
挿入自在としている。[0007] As shown in FIG. 4, such an operation of assembling the cold-shrinkable tube unit by combining the cold-shrinkable tube 5 and the holding sleeve involves an assembling apparatus provided with a diameter-expanding jig 9 and a pressing jig 10. It is done by. Among them, the diameter-expanding jig 9 is configured to connect one end (the right end in FIG. 4) of the cold shrink tube 5 in the axial direction of the small-diameter circular rod portion 11 which can be fitted outside in a state where the diameter thereof is reduced, and the cold shrink tube 5. A large-diameter cylindrical portion 12 that can be fitted to the outside in an expanded state is connected to one end in the axial direction (the left end in FIG. 4) by a conical guide inclined portion 13. The holding sleeve 14 to which the cold shrink tube 5 is to be fitted is made freely insertable inside the large diameter cylindrical portion 12.
【０００８】一方、上記押圧治具１０は、図５〜６に示
す様に構成している。即ち、基板１５の中央部に、上記
常温収縮チューブ５を緩く挿通自在な円形の通孔１６を
形成している。又、上記基板１５の円周方向４個所位置
にガイド孔１７、１７を、この基板１５の外周面と上記
通孔１６の内周面とを連通させる状態で、放射方向に形
成している。そして、上記各ガイド孔１７、１７内に押
圧板１８、１８を、放射方向の摺動変位自在に挿入して
いる。又、上記基板１５の外周面にガイドブラケット１
９、１９を支持し、このガイドブラケット１９、１９に
より、上記各押圧板１８、１８の外端面にその基端部を
結合固定したガイドピン２０、２０を案内している。
又、上記各ガイドブラケット１９、１９と上記各押圧板
１８、１８の外端面との間に圧縮コイルばね２１、２１
を設けて、これら各押圧板１８、１８に、上記通孔１６
の径方向内方に向いた弾力を付与している。On the other hand, the pressing jig 10 is configured as shown in FIGS. That is, a circular through hole 16 through which the room-temperature shrinkable tube 5 can be loosely inserted is formed in the center of the substrate 15. Further, guide holes 17 are formed at four positions in the circumferential direction of the substrate 15 in the radial direction so that the outer peripheral surface of the substrate 15 communicates with the inner peripheral surface of the through hole 16. The pressing plates 18, 18 are inserted into the guide holes 17, 17 so as to be freely slidable in the radial direction. A guide bracket 1 is provided on the outer peripheral surface of the substrate 15.
The guide brackets 19, 19 guide the guide pins 20, 20 whose base ends are fixedly connected to the outer end surfaces of the pressing plates 18, 18, respectively.
Further, a compression coil spring 21, 21 is provided between each of the guide brackets 19, 19 and the outer end surface of each of the pressing plates 18, 18.
Are provided in the respective pressing plates 18, 18 so that the through holes 16 are provided.
The elasticity is directed inward in the radial direction.
【０００９】前述の様な拡径治具９と上述の様な押圧治
具１０による組立装置を使用して、前記常温収縮チュー
ブ５を前記保持スリーブ１４に外嵌する作業は、次の様
にして行なう。先ず、図４（Ａ）に示す様に、上記常温
収縮チューブ５を上記拡径治具９の小径円杆部１１に外
嵌すると共に、この常温収縮チューブ５の基端面（図４
の左端面）に上記押圧治具１０を対向させる。この状態
で、この押圧治具１０を構成する上記各押圧板１８、１
８の先端部片面（図４の右面）が、上記常温収縮チュー
ブ５の基端面に当接する。The operation of externally fitting the cold shrinkable tube 5 to the holding sleeve 14 using the assembling apparatus including the above-described diameter expanding jig 9 and the above-described pressing jig 10 is as follows. Do it. First, as shown in FIG. 4 (A), the cold shrinkable tube 5 is externally fitted to the small-diameter cylindrical portion 11 of the diameter-expanding jig 9 and the base end face of the cold shrinkable tube 5 (FIG.
The pressing jig 10 is opposed to the left end surface of the pressing jig. In this state, the pressing plates 18, 1,
One surface (the right surface in FIG. 4) of the distal end portion 8 comes into contact with the proximal end surface of the cold-shrinkable tube 5.
【００１０】そこで、この状態から、上記拡径治具９を
静止させた状態のまま上記押圧治具１０を、この拡径治
具９の大径円筒部１２に向けて移動させる。これに伴っ
て、上記各押圧板１８、１８が上記常温収縮チューブ５
を、上記拡径治具９のガイド傾斜部１３に向けて押圧す
る。この結果、この常温収縮チューブ５の直径が、図４
（Ｂ）に示す様に、その先端部（図４の右端部）側から
順次広げられ、遂には図４（Ｃ）に示す様に、上記常温
収縮チューブ５全体が、上記大径円筒部１２に外嵌され
た状態となる。In this state, the pressing jig 10 is moved toward the large-diameter cylindrical portion 12 of the expanding jig 9 while the expanding jig 9 is kept stationary. Accordingly, each of the pressing plates 18, 18 is connected to the cold shrink tube 5.
Is pressed toward the guide inclined portion 13 of the diameter increasing jig 9. As a result, the diameter of the cold shrink tube 5 is
As shown in FIG. 4 (B), the tube is sequentially expanded from its tip (right end in FIG. 4), and finally, as shown in FIG. Is fitted to the outside.
【００１１】この様にして上記常温収縮チューブ５全体
を上記大径円筒部１２に外嵌したならば、上記押圧治具
１０及び上記保持スリーブ１４を静止した状態のまま、
上記拡径治具９を上記常温収縮チューブ５の内側から抜
き取る。この作業に伴って上記常温収縮チューブ５は、
図４（Ｄ）に示す様に、その先端部から直径を縮めつつ
上記保持スリーブ１４の外周面に移る。そして、上記拡
径治具９を上記常温収縮チューブ５の内側から完全に抜
き取った状態では、図４（Ｅ）に示す様に、上記常温収
縮チューブ５が上記保持スリーブ１４の外周面に外嵌さ
れた状態となる。When the whole cold-shrinkable tube 5 is externally fitted to the large-diameter cylindrical portion 12 in this manner, the pressing jig 10 and the holding sleeve 14 are kept stationary.
The diameter expanding jig 9 is pulled out from the inside of the cold shrink tube 5. With this work, the cold shrinkable tube 5 is
As shown in FIG. 4 (D), it is transferred to the outer peripheral surface of the holding sleeve 14 while reducing the diameter from the tip. Then, in a state where the diameter-expanding jig 9 is completely removed from the inside of the cold-shrinkable tube 5, the cold-shrinkable tube 5 is fitted onto the outer peripheral surface of the holding sleeve 14 as shown in FIG. It will be in the state that was done.
【００１２】[0012]
【発明が解決しようとする課題】従来構造の場合には、
上述した様な常温収縮チューブユニットの組立作業時
に、常温収縮チューブ５の基端面と、この基端面を押圧
する押圧板１８、１８の先端部片面との接触状態を必ず
しも良好にできなかった。即ち、図４（Ａ）（Ｂ）に示
す様に、上記常温収縮チューブ５が小径円杆部１１に外
嵌された状態で、この常温収縮チューブ５の直径が小さ
い場合には、図５に示す様に上記各押圧板１８、１８が
通孔１６の径方向内方に変位した状態となる。これに対
して図４（Ｃ）（Ｄ）に示す様に、上記常温収縮チュー
ブ５が大径円筒部１２に外嵌された状態で、この常温収
縮チューブ５の直径が大きい場合には、図６に示す様に
上記各押圧板１８、１８が通孔１６の径方向外方に変位
した状態となる。In the case of the conventional structure,
At the time of assembling the cold-shrinkable tube unit as described above, the contact state between the base end surface of the cold-shrinkable tube 5 and one surface of the distal end portions of the pressing plates 18 pressing the base end surface was not always satisfactory. That is, as shown in FIGS. 4 (A) and 4 (B), when the cold shrinkable tube 5 has a small diameter in a state where the cold shrinkable tube 5 is externally fitted to the small-diameter rod portion 11, FIG. As shown, each of the pressing plates 18 is displaced radially inward of the through hole 16. On the other hand, as shown in FIGS. 4 (C) and 4 (D), when the cold shrinkable tube 5 has a large diameter in a state where the cold shrinkable tube 5 is externally fitted to the large-diameter cylindrical portion 12, FIG. As shown in FIG. 6, each of the pressing plates 18 is displaced radially outward of the through hole 16.
【００１３】これら各状態を示す図５と図６とを比較す
れば明らかな通り、上記基端面と先端部片面との接触部
の円周方向に関する幅Ｗは、上記各状態で変わらない。
これに対して上記常温収縮チューブ５の円周方向長さ
は、小径円杆部１１に外嵌された状態に比べて大径円筒
部１２に外嵌された状態の方が長くなる。この為、図６
に示す様に、上記常温収縮チューブ５が大径円筒部１２
に外嵌された状態では、この常温収縮チューブ５の基端
面のうちで、上記各押圧板１８、１８の先端部片面によ
り押圧される部分の割合が小さくなる。As is apparent from a comparison between FIGS. 5 and 6 showing these states, the circumferential width W of the contact portion between the base end surface and the one end surface does not change in each state.
On the other hand, the length of the cold shrinkable tube 5 in the circumferential direction is longer in the state in which the cold-shrinkable tube 5 is externally fitted to the large-diameter cylindrical portion 12 than in the state in which it is externally fitted to the small-diameter cylindrical portion 11. Therefore, FIG.
As shown in FIG.
In the state of being fitted to the outside, the ratio of the portion of the base end surface of the cold shrinkable tube 5 pressed by one surface of the distal end portion of each of the pressing plates 18 becomes small.
【００１４】この様に、上記各押圧板１８、１８の先端
部片面が上記常温収縮チューブ５の基端面を押圧する割
合が小さくなると、この常温収縮チューブ５の基端部の
一部に無理な力が加わり易くなり、組立作業に伴ってこ
の常温収縮チューブ５を損傷し易くなる。又、上記各押
圧板１８、１８の先端部にも大きな力が加わり易くなる
為、これら各押圧板１８、１８の損傷を防止する為に
は、各部の肉厚を大きくする等の対策が必要になる。本
発明は、この様な事情に鑑みて、常温収縮チューブの外
径が大きくなった場合でも、この常温収縮チューブの基
端面を押圧板の片面が押圧する部分の割合が極端に低下
する事のない、常温収縮チューブユニット組立用押圧治
具を実現すべく発明したものである。As described above, when the ratio of one surface of the distal end portion of each of the pressing plates 18 and 18 pressing the base end surface of the cold shrinkable tube 5 becomes small, a part of the base end portion of the cold shrinkable tube 5 cannot be imposed. The force is easily applied, and the cold shrinkable tube 5 is easily damaged with the assembling work. In addition, since a large force is easily applied to the tip of each of the pressing plates 18, 18, it is necessary to take measures such as increasing the wall thickness of each of the portions in order to prevent damage to the pressing plates 18, 18. become. The present invention has been made in view of such circumstances, and even when the outer diameter of the cold-shrinkable tube is increased, the ratio of the portion where one side of the pressing plate presses the base end surface of the cold-shrinkable tube is extremely reduced. The present invention has been made to realize a pressing jig for assembling a cold-shrinkable tube unit.
【００１５】[0015]
【課題を解決するための手段】本発明の常温収縮チュー
ブユニット組立用押圧治具は、前述した従来の常温収縮
チューブユニット組立用押圧治具と同様に、常温で弾性
を有する常温収縮チューブと、この常温収縮チューブの
内径を弾性的に広げた状態でこの常温収縮チューブ内に
挿入する事により、この常温収縮チューブの内径が縮ま
る事を防止した保持スリーブとを備えた常温収縮チュー
ブユニットを組み立てる際に、上記常温収縮チューブの
軸方向端面を軸方向に押圧する為のもので、この常温収
縮チューブを緩く挿通自在な通孔をその中央部に形成し
た基板と、この基板に対しこの通孔の径方向に関する変
位自在に支持された複数枚の押圧板と、これら各押圧板
に、その先端部を上記通孔の径方向内方に変位させる方
向の弾力を付与する複数のばねとを備える。A cold jig for assembling a cold shrinkable tube unit according to the present invention comprises a cold shrinkable tube having elasticity at ordinary temperature, similar to the above-mentioned pressing jig for assembling a cold shrinkable tube unit. When assembling a cold-shrinkable tube unit having a holding sleeve that prevents the cold-shrinkable tube from shrinking by inserting the cold-shrinkable tube inside the cold-shrinkable tube in a state where the inside diameter is elastically widened. In order to press the end of the cold shrinkable tube in the axial direction in the axial direction, a through hole through which the cold shrinkable tube can be loosely inserted is formed at the center thereof. A plurality of pressing plates supported in a radially displaceable manner, and each of the pressing plates is provided with elasticity in a direction of displacing a tip portion of the pressing plate radially inward of the through hole. And a plurality of springs.
【００１６】特に、本発明の常温収縮チューブユニット
組立用押圧治具に於いては、上記各押圧板は、それぞれ
の基端部を上記基板に対し、上記常温収縮チューブの押
圧方向に対し平行な枢軸により揺動変位自在に枢支され
たものである。又、上記各ばねは、上記各押圧板がこれ
ら各枢軸を中心に揺動してこれら各押圧板の先端部が上
記通孔の径方向内方に変位する方向の弾力を、これら各
押圧板に付与するものである。In particular, in the pressing jig for assembling the cold-shrinkable tube unit of the present invention, each of the pressing plates has its base end parallel to the pressing direction of the cold-shrinkable tube with respect to the substrate. It is pivotally supported by a pivot so as to be freely displaceable. Further, each of the springs exerts an elastic force in a direction in which each of the pressing plates swings around each of the pivots and a tip portion of each of the pressing plates is displaced radially inward of the through hole. Is given.
【００１７】[0017]
【作用】上述の様に構成する本発明の常温収縮チューブ
ユニット組立用押圧治具の場合には、常温収縮チューブ
の直径が変化するのに伴って各押圧板が、枢軸を中心に
揺動変位しつつ、この変化に対応する。この為、これら
各押圧板の先端部が上記常温収縮チューブの基端面を押
圧する部分は、この常温収縮チューブの直径が変化する
のに伴って変化する。又、この様に押圧する部分の、こ
の常温収縮チューブの円周方向に関する幅は、上記直径
が大きくなる程大きくなる。この為、この常温収縮チュ
ーブの外径が大きくなった場合でも、この常温収縮チュ
ーブの基端面を押圧板の片面が押圧する部分の割合が極
端に低下する事はない。In the case of the pressing jig for assembling the cold-shrinkable tube unit according to the present invention, the pressing plates are displaced about the pivot axis as the diameter of the cold-shrinkable tube changes. While responding to this change. For this reason, the portion where the distal end of each of the pressing plates presses the base end surface of the cold shrink tube changes as the diameter of the cold shrink tube changes. In addition, the width of the portion to be pressed in the circumferential direction of the cold shrinkable tube increases as the diameter increases. Therefore, even when the outer diameter of the cold shrink tube is increased, the ratio of the portion where one side of the pressing plate presses the base end surface of the cold shrink tube does not extremely decrease.
【００１８】[0018]
【発明の実施の形態】図１〜２は、本発明の実施の形態
の１例を示している。本例の押圧治具１０ａの場合、１
対の基板２２を、間隔をあけて互いに平行に配置した状
態で結合固定し、これら両基板２２同士の間に複数枚
（図示の例では４枚）の押圧板２３、２３を、それぞれ
がたつきなく、且つ、枢軸２４、２４を中心とする揺動
変位を自在として挟持している。上記各基板２２の中央
部の互いに整合する位置には、それぞれ常温収縮チュー
ブ５を緩く挿通自在な通孔１６を形成している。1 and 2 show an embodiment of the present invention. In the case of the pressing jig 10a of this example, 1
The pair of substrates 22 are connected and fixed in a state where they are arranged in parallel with each other at intervals, and a plurality of (four in the illustrated example) pressing plates 23, 23 are placed between the two substrates 22 respectively. The swinging displacement about the pivots 24, 24 is held freely without being attached. A through hole 16 through which the room-temperature shrinkable tube 5 can be loosely inserted is formed at a position where the substrates 22 are aligned with each other at the center.
【００１９】上記各枢軸２４、２４はこの通孔１６の周
囲で円周方向等間隔位置に、上記１対の基板２２同士の
間に掛け渡した状態で、上記常温収縮チューブ５の押圧
方向（図１〜２の表裏方向）に対し平行に設けている。
そして、上記各枢軸２４、２４により、上記各押圧板２
３、２３の基端部を上記各基板２２に対し、揺動変位自
在に枢支している。そして、これら各押圧板２３、２３
と基板２２に固定した係止ピン２５、２５との間に捩り
コイルばね２６、２６を設けて、上記各押圧板２３、２
３に、上記各枢軸２４、２４を中心に図１〜２の反時計
方向に揺動しようとする弾力を付与している。言い換え
れば、上記各捩りコイルばね２６、２６により上記各押
圧板２３、２３に、上記各枢軸２４、２４を中心に揺動
してこれら各押圧板２３、２３の先端部が上記通孔１６
の径方向内方に変位する方向の弾力を付与している。Each of the pivots 24, 24 is placed at equal intervals in the circumferential direction around the through hole 16 in a state of being stretched between the pair of substrates 22 in a direction in which the cold shrink tube 5 is pressed. It is provided in parallel to (front and back directions in FIGS. 1 and 2).
Then, the respective pressing plates 2 are formed by the respective pivots 24, 24.
The base end portions 3 and 23 are pivotally supported with respect to the respective substrates 22 so as to be swingably displaceable. And each of these pressing plates 23, 23
The torsion coil springs 26, 26 are provided between the locking pins 25, 25 fixed to the substrate 22 and the pressing plates 23, 2,
3 is provided with an elastic force to swing in the counterclockwise direction in FIGS. In other words, the respective torsion coil springs 26, 26 cause the respective pressing plates 23, 23 to swing around the respective pivots 24, 24 so that the tips of the respective pressing plates 23, 23
The elastic force in the direction displaced inward in the radial direction is given.
【００２０】上述の様に構成する本発明の常温収縮チュ
ーブユニット組立用の押圧治具１０ａは、前述した従来
の押圧治具１０（図４〜６）の場合と同様に、図４に示
す様に拡径治具９と組み合わせて、常温収縮チューブ５
を保持スリーブ１４に外嵌する。特に、本発明の押圧治
具１０ａの場合には、この常温収縮チューブ５の直径が
変化するのに伴って上記各押圧板２３、２３が、上記各
枢軸２４、２４を中心に揺動変位しつつ、この変化に対
応する。The pressing jig 10a for assembling the cold-shrinkable tube unit of the present invention constructed as described above is similar to the above-described conventional pressing jig 10 (FIGS. 4 to 6), as shown in FIG. Cold shrink tube 5 in combination with
Is externally fitted to the holding sleeve 14. In particular, in the case of the pressing jig 10a of the present invention, as the diameter of the cold shrink tube 5 changes, the pressing plates 23, 23 are displaced by swinging about the pivots 24, 24. While responding to this change.
【００２１】即ち、上記常温収縮チューブ５の直径が小
さい場合には、図１に示す様に、上記各押圧板２３、２
３が上記通孔１６の直径方向に近い方向に位置し、これ
ら各押圧板２３、２３の一部で先端に近い部分のみが、
上記常温収縮チューブ５の基端面に接触する。この状態
では、上記各押圧板２３、２３の片面と上記常温収縮チ
ューブ５の基端面との接触部の、この基端面の円周方向
に関する幅は比較的小さい。但し、この基端面の円周方
向長さも比較的短い為、この基端面を上記各押圧板２
３、２３の片面が押圧する部分の割合は十分に大きい。That is, when the diameter of the cold shrink tube 5 is small, as shown in FIG.
3 is located in a direction close to the diameter direction of the through hole 16, and only a portion of each of the pressing plates 23, 23 that is close to the tip is
It contacts the base end surface of the cold shrink tube 5. In this state, the width of the contact portion between one surface of each of the pressing plates 23 and 23 and the base end surface of the cold shrink tube 5 in the circumferential direction of the base end surface is relatively small. However, since the circumferential length of the base end face is relatively short, the base end face is connected to each of the pressing plates 2.
The ratio of the portion pressed by one surface of 3, 23 is sufficiently large.
【００２２】これに対して、上記常温収縮チューブ５の
直径が大きくなった場合には、図２に示す様に、上記各
押圧板２３、２３が上記通孔１６の周縁の接線方向に近
い方向に位置し、これら各押圧板２３、２３の一部で先
端に近い部分からより中間部に寄った部分が、上記常温
収縮チューブ５の基端面に接触する。この状態では、上
記各押圧板２３、２３の片面と上記常温収縮チューブ５
の基端面との接触部の、この基端面の円周方向に関する
幅が比較的大きくなる。この状態では、この基端面の円
周方向長さも比較的長くなるが、この基端面を上記各押
圧板２３、２３の片面が押圧する部分の割合が極端に小
さくなる事はない。On the other hand, when the diameter of the cold-shrinkable tube 5 increases, as shown in FIG. 2, each of the pressing plates 23, 23 moves in a direction close to the tangential direction of the periphery of the through hole 16. And a part of each of the pressing plates 23, 23, which is closer to the middle from the part closer to the tip, comes into contact with the base end surface of the cold shrink tube 5. In this state, one side of each of the pressing plates 23, 23 and the cold shrink tube 5
The width of the contact portion with the base end surface in the circumferential direction of the base end surface is relatively large. In this state, the length of the base end face in the circumferential direction is relatively long, but the ratio of the portion where one side of each of the pressing plates 23 presses the base end face does not become extremely small.
【００２３】又、図示の例では、上記各押圧板２３、２
３を捩りコイルばね２６、２６により押圧しているの
で、前述の図５〜６に示す様な、圧縮コイルばね２１、
２１により押圧板１８、１８を押圧している構造に比べ
て、押圧治具１０ａの外形寸法を小さくできる。この
為、この押圧治具１０ａを含む、常温収縮チューブユニ
ットの組立装置の小型・軽量化を図れる。尚、上記常温
収縮チューブ５の直径が大きくなった状態で、この常温
収縮チューブ５の基端面と上記各押圧板２３、２３の片
面との接触面積をより確保する為に、これら各押圧板２
３、２３の片側縁で前述の拡径治具９（図４）の外周面
に接触する部分を、円弧状の凹曲縁としても良い。In the illustrated example, the pressing plates 23, 2
3 is pressed by the torsion coil springs 26, 26, so that the compression coil springs 21 as shown in FIGS.
The outer dimensions of the pressing jig 10a can be reduced as compared with the structure in which the pressing plates 18 are pressed by the pressing plate 21. Therefore, the size and weight of the assembly device for the cold shrinkable tube unit including the pressing jig 10a can be reduced. In order to further secure the contact area between the base end surface of the cold shrink tube 5 and one surface of each of the pressing plates 23, 23 in a state where the diameter of the cold shrink tube 5 is increased, these pressing plates 2
The portion of one of the side edges 3 and 23 that contacts the outer peripheral surface of the above-described diameter-enlargement jig 9 (FIG. 4) may be an arc-shaped concave curved edge.
【００２４】[0024]
【発明の効果】本発明は、以上に述べた通り構成され作
用するが、常温収縮チューブの外径が大きくなった場合
でも、この常温収縮チューブの基端面を押圧板の片面が
押圧する部分の割合が極端に低下する事がない。この
為、組立作業に伴って常温収縮チューブを損傷する事が
なくなる。又、各押圧板の損傷を防止する為に各部の肉
厚を大きくしたりする必要がなくなり、小型・軽量化を
図れる。The present invention is constructed and operates as described above. However, even when the outer diameter of the cold-shrinkable tube becomes large, the portion of the cold-shrinkable tube where the one end of the pressing plate presses the base end surface is pressed. The ratio does not drop extremely. Therefore, the cold shrink tube is not damaged by the assembling operation. In addition, it is not necessary to increase the thickness of each part in order to prevent damage to each pressing plate, and it is possible to reduce the size and weight.
【図１】本発明の実施の形態の１例を、常温収縮チュー
ブが縮まった状態で示す模式図。FIG. 1 is a schematic view showing an example of an embodiment of the present invention in a state where a cold-shrinkable tube is contracted.
【図２】同じく常温収縮チューブが拡径した状態で示す
模式図。FIG. 2 is a schematic view showing a state in which a cold-shrinkable tube is expanded in diameter.
【図３】従来から知られている、常温収縮チューブを使
用して構成した電力ケーブルの直線接続部の１例を示す
断面図。FIG. 3 is a cross-sectional view showing an example of a conventionally known straight-line connecting portion of a power cable formed using a cold-shrinkable tube.
【図４】常温収縮チューブを保持スリーブに外嵌して常
温収縮チューブユニットを組み立てる状態を、工程順に
示す断面図。FIG. 4 is a sectional view showing a state in which a cold shrinkable tube is externally fitted to a holding sleeve to assemble a cold shrinkable tube unit in a process order.
【図５】従来構造の１例を、常温収縮チューブが縮まっ
た状態で示す模式図。FIG. 5 is a schematic view showing an example of a conventional structure in a state where a cold shrink tube is contracted.
【図６】同じく常温収縮チューブが拡径した状態で示す
模式図。FIG. 6 is a schematic view showing a state in which the room-temperature shrinkable tube is expanded.
１ 電力ケーブル ２ ケーブル導体 ３ ケーブル絶縁体 ４ 接続スリーブ ５ 常温収縮チューブ ６ 絶縁筒部 ７ 内部電極 ８ 外部電極 ９ 拡径治具 １０、１０ａ 押圧治具 １１ 小径円杆部 １２ 大径円筒部 １３ ガイド傾斜部 １４ 保持スリーブ １５ 基板 １６ 通孔 １７ ガイド孔 １８ 押圧板 １９ ガイドブラケット ２０ ガイドピン ２１ 圧縮コイルばね ２２ 基板 ２３ 押圧板 ２４ 枢軸 ２５ 係止ピン ２６ 捩りコイルばね DESCRIPTION OF SYMBOLS 1 Power cable 2 Cable conductor 3 Cable insulator 4 Connection sleeve 5 Cold shrinkable tube 6 Insulating cylinder part 7 Internal electrode 8 External electrode 9 Enlarged diameter jig 10, 10a Pressing jig 11 Small diameter circular part 12 Large diameter cylindrical part 13 Guide Inclined portion 14 Holding sleeve 15 Substrate 16 Through hole 17 Guide hole 18 Press plate 19 Guide bracket 20 Guide pin 21 Compression coil spring 22 Substrate 23 Press plate 24 Axis 25 Lock pin 26 Torsion coil spring
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ２９Ｌ 23:00 Ｂ２９Ｌ 23:00 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) B29L 23:00 B29L 23:00
Claims (1)
と、この常温収縮チューブの内径を弾性的に広げた状態
でこの常温収縮チューブ内に挿入する事により、この常
温収縮チューブの内径が縮まる事を防止した保持スリー
ブとを備えた常温収縮チューブユニットを組み立てる際
に、上記常温収縮チューブの軸方向端面を軸方向に押圧
する為、この常温収縮チューブを緩く挿通自在な通孔を
その中央部に形成した基板と、この基板に対しこの通孔
の径方向に関する変位自在に支持された複数枚の押圧板
と、これら各押圧板に、その先端部を上記通孔の径方向
内方に変位させる方向の弾力を付与する複数のばねとを
備えた常温収縮チューブユニット組立用押圧治具に於い
て、上記各押圧板は、それぞれの基端部を上記基板に対
し、上記常温収縮チューブの押圧方向に対し平行な枢軸
により揺動変位自在に枢支されたものであり、上記各ば
ねは、上記各押圧板がこれら各枢軸を中心に揺動してこ
れら各押圧板の先端部が上記通孔の径方向内方に変位す
る方向の弾力を、これら各押圧板に付与するものである
事を特徴とする常温収縮チューブユニット組立用押圧治
具。1. A cold-shrinkable tube having elasticity at room temperature, and by inserting the cold-shrinkable tube inside the cold-shrinkable tube in a state where the inside diameter of the cold-shrinkable tube is elastically expanded, the shrinkage of the cold-shrinkable tube is reduced. When assembling the cold-shrinkable tube unit having the holding sleeve and the cold-shrinkable tube, an axial end face of the cold-shrinkable tube is pressed in the axial direction. Substrate, a plurality of pressing plates supported so as to be displaceable in the radial direction of the through hole with respect to the substrate, and a direction in which the tip of each pressing plate is displaced radially inward of the through hole. In the pressing jig for assembling a cold shrinkable tube unit provided with a plurality of springs for imparting elasticity, each of the pressing plates has a base end with respect to the substrate and the cold shrinkable tube. The spring is pivotally supported by a pivot parallel to the pressing direction of the valve, and each of the springs is configured such that each of the pressing plates swings about the respective pivot and a tip of each of the pressing plates. A pressing jig for assembling a cold-shrinkable tube unit, characterized in that an elastic force in a direction in which a portion is displaced radially inward of the through hole is applied to each of the pressing plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000138960A JP3708791B2 (en) | 2000-05-11 | 2000-05-11 | Press jig for assembling cold shrink tube unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000138960A JP3708791B2 (en) | 2000-05-11 | 2000-05-11 | Press jig for assembling cold shrink tube unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001315201A true JP2001315201A (en) | 2001-11-13 |
| JP3708791B2 JP3708791B2 (en) | 2005-10-19 |
Family
ID=18646490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000138960A Expired - Fee Related JP3708791B2 (en) | 2000-05-11 | 2000-05-11 | Press jig for assembling cold shrink tube unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3708791B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006254608A (en) * | 2005-03-11 | 2006-09-21 | Mitsubishi Cable Ind Ltd | Device for assembling cold shrink tube unit |
| CN106737457A (en) * | 2016-12-07 | 2017-05-31 | 天津市科建防腐保温工程有限公司 | Steel pipe support device |
| KR101753656B1 (en) | 2016-07-28 | 2017-07-04 | 박순만 | Rubber Seal Assembling Apparatus for Harness Connector |
| CN110707613B (en) * | 2019-11-28 | 2021-03-12 | 江苏华淼电子科技有限公司 | Cable girdling stripper |
-
2000
- 2000-05-11 JP JP2000138960A patent/JP3708791B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006254608A (en) * | 2005-03-11 | 2006-09-21 | Mitsubishi Cable Ind Ltd | Device for assembling cold shrink tube unit |
| KR101753656B1 (en) | 2016-07-28 | 2017-07-04 | 박순만 | Rubber Seal Assembling Apparatus for Harness Connector |
| CN106737457A (en) * | 2016-12-07 | 2017-05-31 | 天津市科建防腐保温工程有限公司 | Steel pipe support device |
| CN110707613B (en) * | 2019-11-28 | 2021-03-12 | 江苏华淼电子科技有限公司 | Cable girdling stripper |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3708791B2 (en) | 2005-10-19 |
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