JP2002216916A - Braiding turning-over method of shield cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a braiding turning-over method of a shield cable in which the outer conductor braiding that is exposed by stripping off the insulating outer cover at the connection terminal part of the shield cable can be simply and effectively turned over on the insulating outer cover side. SOLUTION: By stripping off the insulating outer cover 18 at the terminal part of the shield cable 10, the outer conductor braiding 16 is exposed, and a metal sleeve 20 of open barrel type is tightened on the outer circumference of the insulating outer cover 18 of the exposed outer conductor braiding 16 side or on the outer circumference of the outer conductor braiding 16. And the exposed outer conductor braiding 16 is widely opened and an outer conductor braiding turning-over fixture 40 or a shield shell connecting terminal 30 is inserted between the wide opened outer conductor braiding 16 and the insulating inner cover 14, and the outer conductor braiding 16 is turned over on the insulating outer cover 18 side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for inverting a braid of a shielded electric wire, and more particularly, to a simple and efficient operation for inverting an outer conductor braid at a connection end portion of a shielded electric wire when connecting the terminal to the connector. The present invention relates to a braided reversal processing method for a shielded electric wire that can be performed in a flexible manner.

[0002]

2. Description of the Related Art Conventionally, a connection terminal portion of this kind of shielded electric wire is disclosed, for example, in Japanese Utility Model Publication No. 4-55428, and the one shown in FIG. This shielded wire 100 is a core wire 10 formed by twisting a plurality of strands.
2 is covered with an insulating inner cover 104, the outer side is covered with an outer conductor braid 106 woven with a thin metal wire, and the outer side is further covered with an insulating outer cover 108. , The insulation inner cover 104 and the braided wire 106 are hierarchically exposed. On the other hand, the shield shell 110 connected to the shielded cable 100 is
12 and insulation barrels 114L, 114R and outer conductor barrels 116L, 116R, which are crimped on a braided wire provided integrally therewith, and a housing 120 is assembled in the outer cylinder 112, and further a housing The inner conductor terminal 1
30 are accommodated.

[0003] The shield shell 11 of the shielded electric wire 100
In connection with the core wire 102, the core wire 102 is crimped by a crimping piece (not shown) behind the inner conductor terminal 130, and the braided wire 106 and the insulating jacket 108 are connected to the insulation barrels 114L, 114R and the outer conductor barrel provided behind the shield shell 110. This is performed by crimping with the shields 116L and 116R, respectively, whereby an electrical connection between the shielded electric wire 100 and the shield shell 110 is formed.

[0004] Also, the connection terminal of the other shielded wire is
For example, a terminal connection structure of a shielded electric wire as disclosed in JP-A-2000-173723 and shown in FIG. 6 is known. An outer conductor braid 1 in which the outside of the core wire 102 is covered with an insulating inner cover 104 and the outside is woven with a thin metal wire
06, and furthermore, the insulation jacket 10 at the end of the shielded electric wire 100 having a structure in which the outside is covered with an insulation jacket 108.
8, the exposed outer conductor braid 106 is folded back to the insulating sheath side, and the exposed insulating inner jacket 104 is peeled off by folding the outer conductor braid to expose the core wire 102, and the inner conductor terminal 130 is attached to the core wire 102. Is crimped. Then, the inner conductor terminal 110 attached to the tip of the shielded electric wire 100 was fitted into the terminal accommodating portion 122 in the housing 120 pre-assembled to the outer conductor terminal 112, and then formed integrally behind the outer conductor terminal 110. The shielded electric wire 100 and the outer conductor terminal 110 are electrically connected by crimping the outer conductor barrels 116L and 116R to the outer conductor braid 106.

[0005] Further, another connection terminal portion of the shielded wire is disclosed in, for example, Japanese Patent Application Laid-Open No. 8-45575.
A connection terminal of a shielded electric wire of a shielded electric wire as shown in FIGS. 7 and 8 is known. The terminal part of the shielded electric wire shown in FIG.
6, and a cylindrical sleeve 140 having an inner diameter substantially equal to the outer diameter of the insulating jacket 108 is inserted through the outer circumference of the insulating jacket 108. After that, the insulation jacket 108, the outer conductor braid 106, the insulation jacket 1
04 is hierarchically peeled off, the outer conductor braid 106, the insulating inner cover 1
04, exposing the core wire 102, and peeling off the insulation jacket 108 at the end of the shielded wire to form the outer conductor braid 10
6 is exposed, and the exposed outer conductor braid 106 is inverted on the outer periphery of the sleeve. Then, a shell connection terminal 150 having a substantially U-shaped cross section for interposing between the outer conductor braid 106 and a shield shell (not shown) and establishing an electrical connection therebetween is formed on the inverted outer conductor braid 106 in a tubular shape. It is a thing to tighten.

[0008] Similarly, the end portion of the shielded electric wire shown in FIG.
Are peeled off hierarchically, the outer conductor braid 106, the insulating inner cover 10
4. Exposing the core wire 102. Next, a cylindrical sleeve 140 having an inner diameter substantially equal to the outer diameter of the insulating inner cover 104 is inserted between the insulating inner cover 104 and the outer conductor braid 106, and the outer conductor braid 10 having this sleeve as an underlay is inserted.
6, a shell connection terminal 150 having a substantially U-shaped cross section for interposing between the outer conductor braid 106 and a shield shell (not shown) for electrical connection therebetween is crimped in a cylindrical shape.

Further, as another shielded cable connection terminal, for example, a shielded wire connection terminal as shown in FIG. 9 is disclosed in Japanese Patent Application Laid-Open No. 6-349532. The insulation jacket 1 at the end of the shielded wire 100 having a structure in which the insulation jacket 104 covering the core wire 102 is covered with the outer conductor braid 106 and the outer periphery is further covered with the insulation jacket.
08, the outer conductor braid 106, the insulating inner cover 104, and the outer conductor braid 106,
Is exposed.

[0008] A shield layer suppressing member 160 is extrapolated and fixed over the exposed insulating inner cover 104 of the shielded electric wire 100 and the outer periphery of the outer conductor braid 106. Then, the shell connection terminal 150 is extrapolated. The shell connection terminal 150 has a large-diameter portion 150 a having an inner diameter substantially equal to the outer diameter of the shield layer suppressing member 160, and the outer conductor braid 106.
Main portion 150b having an inner diameter substantially equal to the outer diameter of the main body, and a spring portion 1 having an inner diameter larger than the outer diameter of the insulating jacket 108.
The large diameter portion 150a fixes the shield layer suppressing member 160, the main tube portion 150b fixes the outer conductor braid 106, and the spring portion 150c is electrically connected to a shield shell (not shown). Things.

As a method of reversing the outer conductor braid of the connection end portion of the shielded electric wire, see Japanese Patent Application Laid-Open No. 2000-326.
As disclosed in Japanese Patent Publication No. 26, the shield wire is moved forward while rotating the loosening claw in the circumferential direction of the shielded wire toward the exposed outer conductor braid by peeling off the insulating jacket of the terminal portion of the shielded wire,
In some cases, after the outer conductor braid is loosened and expanded, it is turned over by a folding tool.

Another inversion method is disclosed in
As disclosed in JP-A-102133, the exposed outer conductor braid of the shielded electric wire is punched by a pair of punches to plastically deform the distal end of the outer conductor braid to expand, and the outer conductor braid is applied by a braid reversing device. May be reversed to the insulation jacket side.

Further, as another inversion method, Japanese Patent Laid-Open Publication No.
000-184548,
On the exposed outer conductor braid of the shielded electric wire, press the circular brush whose peripheral surface forms a brush surface along the braid axis and rotate it in the extending direction of the strand of the outer conductor braid to form the outer conductor braid. After loosening, there is a type in which the circular brush is rotated in the reverse direction of the loosening to reverse the outer conductor braid to the insulating sheath side.

Further, as another inversion method, as disclosed in Japanese Patent Application Laid-Open No. 9-23525, a hollow needle is inserted between the exposed outer conductor braid of the shielded electric wire and the insulating inner jacket, There is a type in which pressurized air is jetted from the tip of the needle to expand the outer conductor braid and invert the outer conductor braid toward the insulating jacket side.

[0013]

However, in the terminal treatment of a shielded wire as disclosed in Japanese Utility Model Publication No. 4-55428, the connection process is simple, but two crimping portions are provided behind the outer conductor terminal. Because of this, it is difficult to reduce the size of the shield shell, and the insulation jacket shrinks due to stress relaxation, and the contact pressure between the outer conductor barrel and the outer conductor braid decreases, resulting in unstable conduction. is there.

[0014] Further, in the terminal treatment of the shielded electric wire as disclosed in Japanese Patent Application Laid-Open No. 2000-173723, only one barrel is required for the shield shell, but the step of inverting the outer conductor braid to the insulating jacket side is complicated. In addition, there is a problem that as time passes, the insulating jacket shrinks due to stress relaxation, and the contact pressure between the outer conductor barrel and the outer conductor braid decreases, resulting in unstable conduction.

Further, in the terminal treatment of the shielded electric wire as shown in FIG. 7 disclosed in Japanese Patent Application Laid-Open No. 8-45575, the sleeve is passed through the outer periphery of the insulating jacket before the outer conductor braid is turned over. In addition, there is a problem that the connection terminal of the shielded wire becomes complicated, for example, since the sleeve has a cylindrical shape, it easily moves along the shielded wire, and a means for fixing the sleeve at a predetermined position is required. On the other hand, the connection end of the shielded electric wire as shown in FIG. 8 has a problem that the operation of inserting the sleeve between the outer conductor braid and the insulating inner jacket becomes complicated.

Furthermore, Japanese Patent Laid-Open No. 6-349532
Termination of shielded wires as disclosed in
There is a problem that the insulation inner coat shrinks due to stress relaxation, and the contact pressure between the outer conductor barrel and the outer conductor braid is reduced, so that conduction becomes unstable.

[0017] Regarding the method of reversing the outer conductor braid, the method disclosed in Japanese Patent Application Laid-Open No. 2000-32626 disengages the outer conductor braid and reliably inserts the disengagement claw for expanding the outer conductor braid into the outer conductor braid. Is difficult,
In the method of reversing the outer conductor braid disclosed in Japanese Patent Application Laid-Open No. 0-102133, there is a problem that it takes time to punch the outer conductor piece, and in Japanese Patent Application Laid-Open No. 9-23525, air is injected under pressure. The reversing device is complicated, such as the need for a compressor of
The method of reversing the outer conductor braid disclosed in JP-A-184548 has a problem that it takes time to unravel and reverse the outer conductor braid. In addition, any of the reversing methods has a problem that a reversing device for reversing the outer conductor braid is expensive.

The problem to be solved by the present invention is that the outer conductor braid reversing process, which is one of the terminal treatments of the shielded electric wire, is performed by attaching a metal sleeve to the end portion of the shielded electric wire so that the outer conductor braid is insulated. This makes it possible to easily reverse the outer conductor braid, so that the operation of reversing the outer conductor braid can be performed easily and efficiently, and the connection state of the connection end portion of the shielded electric wire. The aim is to improve the quality.

[0019]

According to a first aspect of the present invention, there is provided a method for reversing a braid of a shielded electric wire according to the present invention. In a braided reversal processing method of a shielded electric wire in which the conductor braid is covered and the outer periphery of the outer conductor braid is covered with an insulating outer cover, a step of exposing the outer conductor braid by peeling off the insulating outer cover of the terminal portion of the shielded electric wire. Tightening an open-barrel-type metal sleeve on the outer periphery of the exposed outer conductor braid or outer periphery of the outer conductor braid, and expanding the exposed outer conductor braid; and Inserting an outer conductor braid reversing jig or a shield shell connection terminal between the conductor braid and the insulating inner jacket to invert the outer conductor braid to the insulating jacket side. .

As described above, since the open barrel type metal sleeve is attached to the exposed outer conductor braid of the shielded electric wire and the outer conductor braid is expanded, the outer conductor braid is expanded and inverted. Is extremely easy, and can be performed in a very short time as compared with the conventional braid reversal processing method. Further, in this braid reversing operation, the outer conductor braid can be reversed without using an expensive braid reversing device, so that a reduction in production cost can be expected.

In addition, there is no need to precede the outer periphery of the insulating jacket before the braid reversal operation as in the case of a metal sleeve which has been formed into a cylindrical shape in advance. It can be securely fixed at a predetermined position due to caulking, and the metal sleeve plays a role as an underlay of the outer conductor braid, so that the bonding strength of the connection between the shielded electric wire and the shield shell that shields the terminal portion thereof is secured. And the reliability of the connection state of the terminal unit can be improved.

Further, the open barrel type metal sleeve bites into the outer conductor braid into one peripheral edge of a curved sleeve plate which is fixedly fastened to the outer peripheral surface of the insulating outer cover by caulking. A plurality of clamping pieces to be fastened may be provided at intervals or a series of clamping pieces may be provided over the entire circumference. in this way,
If the pressing pieces are formed inward on one edge of the curved sleeve plate, the outer conductor braid to which these pressing pieces contact is distorted because the contact portion and the periphery thereof are pressed and distorted. Since it is expanded in a funnel shape, the reversal work of the outer conductor braid can be reliably performed.

In addition, the open barrel type metal sleeve clamps an open barrel type insulation barrel and an outer conductor braid which are clamped and fixed to the outer peripheral surface of the insulating jacket by caulking. A curved sleeve plate to be expanded may be integrally formed. As a result, the insulation jacket is first tightened and fixed by the insulation barrel, and then the outer conductor braid is expanded by tightening the sleeve plate, so that the outer conductor braid can be smoothly expanded and the braid reversing process is efficient. Done in

Further, if the outer conductor braid reversing jig for reversing the outer conductor braid is a cylindrical body as described in claim 4,
The tubular outer conductor braid reversing jig can be smoothly inserted between the outer conductor braid expanded by caulking the metal sleeve and the insulating inner jacket, and the outer conductor braid can be easily reversed.

The shield shell connecting terminal for reversing the outer conductor braid may be a cylindrical body or a cylindrical body having a slit formed in the direction of the cylindrical body. Since the shield shell connection terminal is formed in a tubular shape, the outer conductor braid is easily inverted, and the inverted outer conductor braid is fixed on the metal sleeve in a state of being clamped by the shield shell connection terminal. If the slit is formed in the cylinder direction, the shield shell connection terminal can be easily inserted into the outer periphery of the metal sleeve, and in any case, the stability of the connection state of the connection part between the outer conductor braid and the shield shell connection terminal is improved I do.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Various embodiments of the present invention will be described below in detail with reference to the drawings.

(Embodiment 1) FIGS. 1 (a) to 1 (c) are views for explaining a method of reversing a braid of a shielded electric wire according to Embodiment 1, and show an open barrel type metal sleeve provided with a pressing piece on one peripheral edge. It is the figure which showed the process of assembling to the terminal part of a shielded electric wire, and inverting an outer conductor braid.

In the shielded electric wire 10, the outside of the core wire 12 is covered with an insulating inner cover 14, the outside thereof is covered with an outer conductor braid 16 woven with a thin metal wire, and the outside thereof is further covered with an insulating outer cover 18.
It has a structure covered with. The end portion of the shielded electric wire 10 is in a state where the outer sheath braid 16 is exposed by peeling off the insulating jacket 18.

The metal sleeve 20 attached to the end of the shielded electric wire 10 is of an open barrel type comprising a sleeve plate 22 having a substantially U-shaped cross section. Are formed on the outer periphery of the sleeve plate 22 in the axial direction of the sleeve to crimp the outer conductor braid 16 of the shielded electric wire 10 on the sleeve plate 22. Are formed so as to protrude inward.

The open-barrel type metal sleeve 20 is attached to a pressing piece 2 provided on one peripheral edge of a sleeve plate 22.
The sleeve fitting piece 2 having an uneven shape is formed so that the base ends of the exposed outer conductor braid of the shielded wires are crimped.
3a and 23b are fitted to each other and fitted in a cylindrical shape all around the insulating jacket 18. At this time, the base end of the outer conductor braid 16 with which the clamping pieces 24, 24, 24 come into contact is formed by the clamping pieces 24, 24, 24.
Since the outer conductor braid 16 is pressed by 24, the contact portion and the outer conductor braid 16 around the contact portion are expanded in a strained funnel shape.

The diameter of the funnel-shaped outer conductor braid 16 which is larger than the outer diameter of the metal sleeve 20 and smaller than the maximum diameter of the funnel-shaped outer conductor braid 16 is provided between the outer conductor braid 16 thus expanded and the insulating inner cover 14. Through the cylindrical outer conductor braid reversing jig 40 and the outer conductor braid 16 into the cylindrical sleeve plate 22 of the metal sleeve 20.
Flip over the outer circumference.

(Embodiment 2) FIGS. 2 (a) to 2 (c) are views for explaining a braided reversing method of a shielded electric wire according to Embodiment 2 of the present invention, in which an open barrel type metal sleeve provided with an insulation barrel is used as a shielded electric wire. It is a figure showing the process of inverting the outer conductor braid by assembling to the terminal part of (a).

The metal sleeve 20 mounted on the end of the shielded electric wire 10 is an open barrel type having a sleeve plate 22 having a substantially U-shaped cross section, and both are fitted to both circumferential edges of the sleeve plate 22. Sleeve fitting pieces 23a and 23b are formed in a concave and convex shape to form a cylindrical shape, and an insulation barrel 26 of an open barrel type for fastening and fixing the insulating jacket 18 of the shielded wire 10 to the sleeve plate 22. The insulating barrel 26 is provided via a connecting portion 25. Further, at the both ends in the circumferential direction of the insulation barrel 26, uneven barrel fitting pieces 27a and 27b for fitting the two into a cylindrical shape are provided. Have been.

The metal sleeve 20 is connected to the open barrel type insulation barrel 26 by the barrel fitting piece 2.
7a and 27b are fitted to each other so as to be mounted on the outer periphery of the insulating jacket 18, and then the concave and convex sleeve fitting pieces 23a and 23b of the sleeve plate 22 provided integrally with the insulation barrel 26 are fitted to each other to form an outer portion. It is attached to the outer periphery of the conductor braid 16, and each of them is caulked in order and fixed.
At this time, the outer conductor braid 16 with which the inner wall surface of the sleeve plate 22 abuts is pressed at the abutting portion and the periphery thereof, is distorted, and is expanded in a funnel shape.

The sleeve plate 22 of the metal sleeve 20 is provided between the outer conductor braid 16 thus expanded and the insulating inner cover 14.
Is inserted through a cylindrical braid reversing jig 40 having a diameter larger than the outer diameter of the outer conductor braid 16 and having a diameter smaller than the maximum diameter of the outer conductor braid 16 whose tip is expanded in a funnel shape. On the outer periphery of the sleeve plate 22.

(Embodiment 3) FIGS. 3 (a), 3 (b) and 4 are views showing a method for inverting the braid of a shielded electric wire according to Embodiment 3. FIG. FIGS. 3 (a) and 3 (b) are perspective views showing a state in which a shield sleeve connection terminal is inserted into a shielded wire in which a metal sleeve provided with a plurality of clamping pieces on one peripheral edge is attached and the outer conductor braid is expanded. FIG. 4 is a perspective view showing a state after the shield shell connection terminal having the slit formed therein is inserted into the outer periphery of the metal sleeve integrally provided with the insulation barrel.

The insulation jacket 18 at the end of the shielded wire 10
To expose the outer conductor braid 16, and the exposed outer conductor braid 16 is provided with three rectangular pressing pieces 24, 24, 24 on one peripheral edge of a sleeve plate 22, and has an approximately U-shaped open section. Pressing piece 2 with barrel type metal sleeve 20
The metal sleeve is formed by fitting concave and convex fitting portions 23a and 23b provided on the peripheral edge of the sleeve plate 22 so that the base plates 4, 24 and 24 are pressed against the base end of the outer conductor braid 16. 20 is fitted around the entire circumference of the insulating jacket 18 in a cylindrical shape.
By attaching the metal sleeve 20, the pressing pieces 24, 24, 2
Since the base end of the outer conductor braid 16 with which the abutment 4 contacts is pressed by these clamping pieces 24, 24, 24,
The contact portion and the outer conductor braid 16 around the contact portion are distorted, and FIG.
As shown in (a), it is in a state of being expanded in a funnel shape.

A shield (not shown) having an inner diameter substantially equal to the outer diameter of the sleeve plate 22 between the expanded outer conductor braid 16 and the insulating inner cover 14 for shielding the connection end of the shielded electric wire 10. A cylindrical shield shell connection terminal 30 interposed between the shell and the outer conductor braid 16 and electrically connected to both is inserted through the outer periphery of the sleeve plate 22 of the metal sleeve 20. The outer conductor braid 16 whose distal end is expanded by the inserted shell connection terminal 30 is turned over on the outer periphery of the sleeve plate 22 of the metal sleeve 20, and FIG.
As shown in FIG. 7, the state is sandwiched between the metal sleeve 20 and the shield shell connection terminal 30. in this way,
The shield shell connection terminal 30 is inserted through the outer periphery of the sleeve plate 22 to be electrically connected to the outer conductor braid 16, and
Since the operation of reversing the outer conductor braid 16 is also performed at the same time, the operation of reversing the braid of the shielded electric wire 10 can be performed extremely efficiently.

FIG. 4 shows a cylindrical shield shell connection terminal 30 which is opened by forming a slit in the cylinder axis direction.
Open barrel type insulation barrel 26
Is inserted between the outer conductor braid 16 and the insulating inner sheath so as to be inserted into the outer periphery of the metal sleeve 20 at the end portion of the shielded electric wire 10 to which the metal sleeve 20 integrally provided is assembled, and the outer conductor braid 16 is inverted. Is shown. Strip the insulation jacket 18 at the end of the shielded electric wire 10 to form an outer conductor braid 16
Are exposed, and the insulation barrel 26 is firstly fitted with the barrel fitting pieces 27a, 27 with the metal sleeve 20 integrally formed with the insulation barrel 26 having a substantially U-shaped cross section.
b are fitted to each other around the outer periphery of the insulating jacket 18, and then the sleeve fitting pieces 23 a, 23
b are fitted to each other to be mounted on the outer periphery of the outer conductor braid 16, and each integrally provided behind the sleeve plate 22 is sequentially caulked and fixed.

At this time, the abutting portion of the outer conductor braid 16 and its periphery which are fastened and fixed by the sleeve plate 22 of the metal sleeve 20 are pressed and distorted, and are expanded in a funnel shape. The expanded outer conductor braid 16 and the insulating inner cover 1
4, a cylindrical shield shell connection terminal 30 having a slit formed in the cylinder direction is inserted therethrough, and the outer conductor braid 16 is inverted on the sleeve plate 22. Also, since the shield shell connection terminal 30 inserted around the outer conductor braid 16 has a larger diameter than before the insertion, a force for clamping the outer conductor braid 16 acts and the fixing force is further improved. .

The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. For example, in the above embodiment,
In a metal sleeve provided with a clamping piece on one circumference, the number of the clamping pieces was set to three, but when this clamping piece was crimped to the exposed base end of the outer conductor braid, the distal end of the outer conductor braid was bent. Any number of pressing pieces may be used as long as they are sufficiently widened, and a continuous pressing piece may be formed over the entire circumference. Although the shape of the clamping piece is rectangular in the above embodiment, it is formed into a curved surface so that the outer conductor braid is not cut when it is crimped to the outer conductor braid, or the edge portion is formed by chamfering. Of course, the shape may be such as removed.

Also, an example has been described in which an insulation barrel for fastening and fixing an insulating jacket to a metal sleeve has been described. If miniaturization in the direction is required, a metal sleeve in which the insulation barrel is omitted may be used.

[0043]

According to the method for inverting the braid of a shielded electric wire according to the present invention, the outer periphery of the outer conductor braid at the end portion of the shielded wire exposing the outer conductor braid is caulked and fixed by an open barrel type metal sleeve having a substantially U-shaped cross section. The outer conductor braid is expanded, and a tubular body such as an outer conductor braid reversing jig or a shield shell connection terminal is inserted between the expanded outer conductor braid and the insulating inner jacket. Since the outer conductor braid is flipped to the covered side, it is extremely easy to expand and reverse the outer conductor braid, and it is possible to drastically reduce the time required for the reversal process. Further, in the terminal connection processing of the shielded electric wire, the outer conductor braid can be reversed without using an expensive braid reversing device, so that a reduction in production cost can be expected.

Further, the metal sleeve functions as an underlay of the outer conductor braid, so that the bonding strength between the shielded electric wire and the shield shell that shields the end of the shielded electric wire is increased, and the reliability of the connection state of the shielded electric wire terminal is increased. Performance can be improved.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 illustrates a method of reversing a braid of a shielded electric wire according to a first embodiment of the present invention, in which an open-barrel type metal sleeve provided with a pressing piece on one peripheral edge is attached to an end portion of the shielded electric wire. It is a figure showing the process of inverting a braid.

FIG. 2 illustrates an outer conductor braid by assembling an open barrel type metal sleeve integrally formed with an insulation barrel to an end portion of a shielded electric wire in describing a method of reversing a braid of a shielded electric wire according to a second embodiment of the present invention. FIG. 4 is a view showing a step of inverting the pattern.

FIG. 3 is a view showing a method of processing a terminal of a shielded electric wire according to a third embodiment of the present invention, in which a braided outer conductor braided by attaching a metal sleeve to a terminal portion of the shielded electric wire is inverted by a shield shell connection terminal. It is a figure showing a process to make it.

FIG. 4 is a diagram showing another example of the shield shell connection terminal used as Embodiment 3 of the present invention.

FIG. 5 is a diagram illustrating a process of processing a connection terminal of a shielded wire generally known in the related art.

FIG. 6 is a perspective view showing a connection terminal of a shielded electric wire as another embodiment generally known in the related art.

FIG. 7 is a perspective view showing a processing step of a connection terminal of a shielded wire as another embodiment generally known in the related art.

FIG. 8 is a perspective view showing a processing step of a connection terminal of a shielded wire as another embodiment generally known in the related art.

FIG. 9 is a perspective view showing a process of processing a connection terminal of a shielded electric wire as another embodiment generally known in the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Shielded electric wire 12 Core wire 14 Insulated inner sheath 16 Braided wire 18 Insulated outer sheath 20 Metal sleeve 22 Sleeve plate 23a Sleeve fitting convex piece 23b Sleeve fitting concave piece 24,24,24 Nipping piece 26 Insulation barrel 27a Barrel fitting Convex piece 27b Barrel fitting concave piece 30 Shield shell connection terminal 40 Braid reversal jig

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Norifumi Yoshida 1-7-10 Kikuzumi, Minami-ku, Nagoya-shi, Aichi F-term in Auto Network Engineering Laboratory Co., Ltd. 5E063 CC05 XA01 5G355 AA03 BA04 BA08 CA06 5G375 AA12 BA03 BB52 CA03 CA13 CC07 DA36 DB35 DB38 EA17

Claims (5)

[Claims] In a method for inverting a shielded electric wire, the outer conductor braid is coated on the outer periphery of an insulating inner covering that surrounds the core wire, and the outer periphery of the outer conductor braid is covered with an insulating outer cover. A step of exposing the outer conductor braid by peeling off the insulating jacket of the terminal portion, and tightening an open barrel type metal sleeve on the outer periphery of the exposed outer conductor braid or the outer periphery of the outer conductor braid. Expanding the outer conductor braid, inserting an outer conductor braid reversing jig or a shield shell connection terminal between the expanded outer conductor braid and the insulating inner jacket, and passing the outer conductor braid through the insulating jacket. Inverting the shielded wire to the side. 2. The method according to claim 1, wherein the open-barrel-type metal sleeve is a curved sleeve plate that is fixedly fastened to an outer peripheral surface of an insulating sheath by caulking. A plurality of pressing pieces which bite into and tighten the outer conductor braid are provided on the periphery at intervals or a continuous pressing piece is provided over the entire circumference. 3. The method according to claim 1, wherein said open barrel type metal sleeve is clamped and fixed to an outer peripheral surface of an insulating jacket by caulking. A curved sleeve plate for pressing and expanding the barrel and the outer conductor braid is integrally formed. 4. The method according to claim 1, wherein the outer conductor braid inversion jig comprises:
It is characterized by being a cylindrical body. 5. The method according to claim 1, wherein the shield shell connection terminal is a cylindrical body or a slit formed in a cylindrical direction of the cylindrical body. It is characterized by.