JP3591702B2 - Terminal treatment method and terminal treatment structure of shielded wire - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a terminal processing method and a terminal processing structure of a shielded electric wire which facilitates a connection operation of a shielded electric wire having a shield braid used for connection of an electric system such as an automobile.
[0002]
[Prior art]
2. Description of the Related Art Various types of terminal processing methods and terminal processing structures for shielded wires have been known. For example, the conventional shielded wire terminal processing structure 51 shown in FIG. 5 is configured such that a core wire 52 and an insulating endothelium 53 project from a terminal portion of a shielded wire W, and a circular tubular connection terminal 54 having a shield connection means 60 from a distal end. Is covered. Thereby, the connection terminal 54 and the shield braid 57 of the shielded electric wire W are connected by the shield connection means 60.
[0003]
More specifically, the shielded electric wire W is peeled off from the tip end of the insulating sheath 61 by a length L3 to leave the shield braid 57 for positioning the connection terminal 54. Then, the shield braid 57 and the insulating inner skin 53 are peeled off so that the core wire 52 projects by a length L4 to connect a male terminal (not shown).
[0004]
Next, when the connection terminal 54 is inserted from the end of the shielded electric wire W processed as described above, the connection terminal 54 hits the insulating sheath 61 and is positioned. At this time, the small tube portion 56 covers the outside of the exposed shield braid 57, and the shield braid 57 protruding from the tip of the small tube portion 56 is folded back around the small tube portion 56 by a length L5 to form a folded braid portion 58.
[0005]
When a metal caulking sleeve 59 is put on the outer periphery of the folded braid 58 and then caulked at a plurality of locations at the position of arrow P, the shield braid 57 is also electrically connected to the connection terminal 54. That is, the shield connection means 60 includes the small tube portion 56 of the connection terminal 54, the folded braid portion 58, and the crimping sleeve 59.
Further, since the folded braided portion 58 is clamped between the crimping sleeve 59 and the small tube portion 56, the electrical connection state does not decrease even if the insulating endothelium 53 is softened by the heat generated from the core wire 52. A tubular shield shell (not shown) is connected to the outer periphery of the large tube portion 55 of the connection terminal 54 to cover and shield a male terminal (not shown).
[0006]
[Problems to be solved by the invention]
However, in the conventional method and structure for processing a shielded wire terminal described above, the insulating sheath 61 of the shielded wire W and the shield braid 57 must be cut separately, and the shield braid 57 is folded back to form a folded braid 58. , There is a problem that work efficiency is reduced.
Further, since two parts, the connection terminal 54 and the caulking sleeve 59, are required, there is a problem that the parts management becomes complicated.
[0007]
An object of the present invention has been made in view of the above-mentioned problems, and a method and a terminal processing method for a shielded electric wire capable of simplifying the preprocessing of the shielded electric wire, reducing the number of components, and improving the working efficiency. Is to provide a structure.
[0008]
[Means for Solving the Problems]
An object of the present invention is to provide a method for treating a shielded wire, which is connected to a shield braid by a connection blade provided on a connection terminal mounted on a terminal portion of the shielded wire, wherein the wire is projected outward from an outer peripheral surface and swaged. A connection terminal having a connection blade at a free end of the rotating member that is rotated and displaced in the axial direction is inserted from a tip of the shielded wire where the core wire and the insulating endothelium protrude, and provided at the rear end of the connection terminal. After the positioning piece is hit against the end surface of the insulated sheath and positioned, the rotating member is crimped in the axial direction from above the insulated outer sheath of the shielded wire, thereby breaking the insulated outer sheath of the shielded wire and connecting the shield braid and the connection terminal. This can be solved by a method for processing the terminal of a shielded wire, which is characterized by the following.
[0009]
Further, the object of the present invention is to provide a shielded cable in which a core wire and an insulating inner sheath are protruded from a terminal portion of a shielded wire, and a tubular connection terminal having a connection blade is covered from a tip end. In a terminal treatment structure of a shielded electric wire connected by a connection blade , a connection terminal protrudes outward from an outer peripheral surface, is rotationally displaced in an axial direction by caulking, and is axially directed to a free end. And a positioning piece that is provided at the rear end of the connection terminal, and that is positioned at the rear end of the connection wire and that positions the connection terminal when it is inserted from the distal end of the shield wire protruding the core wire and the insulating inner skin. The problem can be solved by a shielded wire terminal treatment structure characterized by being provided.
[0011]
According to the structure for terminating the shielded wire having the above-described configuration, the connection terminal protrudes outward from the outer peripheral surface and is rotationally displaced in the axial direction by caulking, and the connection blade directed in the axial direction to the free end is formed. A rotating member having a positioning piece provided at a rear end of the connection terminal, which is positioned at the rear end of the shielded electric wire and positions the connection terminal when it is inserted from the tip of the shield wire protruding from the core. Have . Therefore, except for protruding the core wire and the insulating inner sheath, the shielded electric wire may be cut along with the insulating sheath without leaving the shield braid, and the shield braid does not need to be folded back. Therefore, the work efficiency of the work of connecting the connection terminal to the shielded wire can be improved.
[0012]
In addition, when the connection blade is provided at a free end of a rotating member that protrudes outward from the outer peripheral surface of the connection terminal and is rotationally displaced in the axial direction by swaging, the connection blade is insulated by swaging. The outer sheath is broken to be securely connected to the shield braid, and the connection blade bites into the insulating inner skin, so that the position of the shielded wire with respect to the connection terminal is securely held with the caulking. Therefore, the reliability of the connection structure of the connection terminal to the shielded wire can be improved. In addition, since only the connection terminal having the connection blade is used other than the shielded electric wire, the number of parts is small, so that the parts management can be simplified and the cost can be reduced.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a shielded wire terminal processing structure of the present invention will be described in detail with reference to FIGS. 1 to 4 . FIG. 1 is an exploded perspective view showing an embodiment of a shielded wire terminal treatment structure of the present invention, FIG. 2 is a longitudinal sectional view in FIG. 1, FIG. 3 is a longitudinal sectional view in which a sleeve is added to FIG. 2, and FIG. FIG. 9 is a perspective view showing a modification of the connection terminal in FIG.
As shown in FIG. 1, a terminal processing structure 1 for a shielded electric wire according to the present embodiment is configured such that a core wire 2 and an insulating endothelium 3 protrude from a terminal portion of a shielded electric wire W, and a circular connection having a shield connection means 10 from a distal end. Terminal 4 is covered. Thereby, the connection terminal 4 and the shield braid 7 of the shielded electric wire W are connected by the shield connection means 10.
[0015]
More specifically, as shown in FIG. 2, in the shielded electric wire W, the insulating sheath 11 and the shield braid 7 are peeled off from the tip by a length L1 in order to locate the connection terminal 4. Then, the insulating inner skin 3 is peeled off so that the core wire 2 projects by a length L2 to connect a male terminal (not shown). Next, when the connection terminal 4 is inserted from the front end of the shielded electric wire W processed as described above, the positioning piece 4a provided at the rear end hits the end surface of the insulating sheath 11 and is positioned. At this time, the small tube portion 6 covers the outside of the insulating sheath 11.
[0016]
Then, the connection terminal 4 and the shield braid 7 of the shielded electric wire W are connected by caulking the shield connection means 10 in the direction of arrow P in the figure. The shield connecting means 10 includes an axially oriented connection blade 12 that breaks the insulating sheath 11 of the shielded electric wire W and is connected to the shield braid 7, and an outer peripheral surface of the connection terminal 4 for supporting the connection blade 12. And a rotating member 13 that is rotated and displaced in the axial direction at the time of caulking.
[0017]
In the shielded wire end treatment structure 1 having the above-described configuration, first, the insulating sheath 11 and the shield braid 7 are both cut off at the length L1 from the tip of the shielded wire W, and then insulated from the length L2 from the tip. The inner skin 3 is removed, and the distal end processing of the shielded electric wire W is completed. Then, when the connection terminal 4 is fitted from the end of the shielded electric wire W from the large tube portion 5 first, the small tube portion 6 is fitted into the outer periphery of the insulating sheath 11 and the positioning piece 4a is brought into contact with the end surface to be positioned in the axial direction. .
[0018]
Next, when caulking is performed from the P direction by a caulking jig or the like, the rotating member 13 is rotationally displaced, and the connecting blade 12 cuts the insulating outer cover 11 and enters in the axial direction with the displacement of the rotating member 13. , The tip of which comes into contact with the shield braid 7. This caulking operation is necessarily performed not only in one direction of the arrow P but also in a plurality of directions, and the connection terminal 4 is securely connected to the shield gang 7. Since the plurality of rotation supporting pieces 13 are provided in the same direction, the connection blade 12 comes into contact with the shield braid 7 by twisting the shield braid 7 and the insulating endothelium 3 during the caulking operation. .
[0019]
As described above, in the shielded wire terminal treatment structure 1 of the present embodiment, the shield connection means 10 is connected to the shield braid 7 by breaking the insulating sheath 11 of the shielded wire W by caulking, and is connected in the axial direction. The blade 12. The connection blade 12 is provided on a rotating member 13 that protrudes outward from the outer peripheral surface of the connection terminal 4 and that is rotationally displaced in the axial direction by caulking.
Therefore, the distal end of the shielded electric wire W may be cut along with the insulating sheath 11 without leaving the shield braid 7 as in the related art, except that the core wire 2 and the insulating inner sheath 3 are projected, and the shield braid 7 does not need to be folded back. Therefore, the work of connecting the connection terminal 4 to the shielded electric wire W can be performed efficiently.
[0020]
In addition, the connection blade 12 breaks the insulation sheath 11 by crimping and is securely connected to the shield braid 7, and the connection blade 12 bites into the insulation sheath 11, so that the position of the shielded electric wire W with respect to the connection terminal 4 is surely ensured. Will be retained. Therefore, the reliability of the connection structure of the connection terminal 4 to the shielded electric wire W can be improved.
Further, except for the shielded wire W, only the connection terminal 4 having the connection blade 12 simplifies parts management and reduces the number of parts, so that the cost can be reduced.
[0021]
When the sleeve 14 is added as shown in FIG. 3, the sleeve 14 is flush with the end surface of the insulating outer skin 11 between the insulating inner skin 3 and the shield braid 7 before caulking in the connection operation described above. Insert up to. In this case, since the connection blade 12 comes into contact with the sleeve 14 which is in contact with the shield braid 7 over a large area, the conduction between the connection terminal 4 and the shield braid 7 is further ensured. In addition, even if the insulating inner skin 3 is softened by the heat generated from the core wire 2, the crimping force does not decrease, and a more reliable connection structure of the connection terminal 4 to the shielded wire W can be obtained.
[0022]
Next, a shielded wire terminal processing structure 21 as a modification of the first embodiment will be described with reference to FIG. Note that the same reference numerals are given to the same components as those in the above-described embodiment, and detailed description thereof will be omitted.
The part of the shielded wire terminal processing structure 21 of the present embodiment different from the above-described shielded wire terminal processing structure 1 is that the rotating member 13 supporting the plurality of connection blades 12 is disposed on the outer periphery of the small pipe portion 6 of the connection terminal 4. The point is that the connection blade 12 and the connection member 12 are formed so as to face the outer periphery of the small tube portion 26 of the connection terminal 24 together with the rotating member 13 as compared with the case where the connection blades are provided at equal intervals in the same direction.
Therefore, since the turning member 13 is provided in the facing direction of the shield wire end treatment structure 21, when the connection blade 12 comes into contact with the shield braid 7 in the process of caulking, the shield braid 7 and the insulating sheath No force to twist 3 is generated.
[0025]
【The invention's effect】
As described above, according to the method for treating a shielded wire according to the present invention , the connection having the connection blade at the free end of the rotating member that protrudes outward from the outer peripheral surface and that is rotationally displaced in the axial direction by caulking. After the terminal is inserted from the core wire of the shielded wire and the tip with the insulating inner sheath protruding, and the positioning piece provided on the rear end of the connection terminal hits the end face of the insulating sheath, the rotating member is moved to the insulating sheath of the shielded wire. By being crimped in the axial direction from above, the insulation sheath of the shielded wire is broken and the shield braid is connected to the connection terminal. It is only necessary to cut the shield braid without leaving it, and there is no need to turn the shield braid.
Further, the crimping causes the connection blade to break the insulating outer skin and be reliably connected to the shield braid, and the connection blade cuts into the insulating inner skin, so that the connection terminal is securely held by the shielded electric wire. Therefore, the work of connecting the connection terminal to the shielded wire can be performed efficiently.
[0026]
Further, according to the terminal treatment structure of the shielded wire of the present invention, the connection terminal protrudes outward from the outer peripheral surface and is rotationally displaced in the axial direction by caulking, and is connected to the free end in the axial direction. A pivoting member having a blade, provided at the rear end of the connection terminal, and a positioning piece for positioning the connection terminal when hitting the end surface of the insulated outer skin when inserted from the end of the shielded wire protruding the core wire and the insulating inner sheath, It has.
Therefore, except for protruding the core wire and the insulating inner sheath, the shielded electric wire may be cut along with the insulating sheath without leaving the shield braid, and the shield braid does not need to be folded back. Therefore, the work efficiency of the work of connecting the connection terminal to the shielded wire can be improved.
[0027]
In addition, when the connection blade is provided at a free end of a rotating member that protrudes outward from the outer peripheral surface of the connection terminal and is rotationally displaced in the axial direction by swaging, the connection blade is insulated by swaging. The outer sheath is broken to be securely connected to the shield braid, and the connection blade bites into the insulating inner skin, so that the connection terminal can be securely held by the shielded electric wire.
Therefore, the reliability of the connection structure of the connection terminal to the shielded wire can be improved, and since only the connection terminal having the connection blade is used other than the shielded wire, the number of parts is small, and the parts management is simplified and the cost is reduced. Can be achieved.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a first embodiment of a shielded wire terminal processing structure of the present invention.
FIG. 2 is a longitudinal sectional view showing a connection completed state in FIG.
FIG. 3 is a longitudinal sectional view showing a state where a sleeve is added in FIG. 2;
FIG. 4 is a perspective view showing a modification of the connection terminal according to the first embodiment.
FIG. 5 is a longitudinal sectional view showing an example of a conventional shielded wire terminal processing structure.
[Explanation of symbols]
1, 21, 31 Shielded wire terminal treatment structure 2 Core wire 3 Insulated inner skin 4, 24, 34 Connection terminal 7 Shield braid 10 Connection means 11 Insulated outer skin 12, 32 Connection blade 13 Rotating member 14 Sleeve 26 Small tube portion 33 Projecting member

Claims (2)

In a terminal treatment method of a shielded wire connected to a shield braid by a connection blade provided on a connection terminal mounted on a terminal portion of the shielded wire,
A connection terminal having a connection blade at a free end portion of a rotating member which projects outwardly of an outer peripheral surface and is rotatably displaced in an axial direction by caulking; After the positioning piece provided at the rear end of the connection terminal hits the insulating sheath end face and is positioned, the rotating member is axially crimped from above the insulating sheath of the shielded wire, A method of treating a shielded wire end, wherein the insulation braid of the shielded wire is broken to connect the shield braid and the connection terminal . A shield wire in which a core wire and an insulating endothelium are protruded from a terminal portion of the shielded wire, and a tubular connection terminal having a connection blade is covered from a tip, and the connection terminal and a shield braid of the shielded wire are connected by the connection blade. In the terminal processing structure of
A rotating member having a connection blade protruding outward of the outer peripheral surface and being rotationally displaced in the axial direction by caulking, and having a free end in the axial direction,
A positioning piece that is provided at a rear end of the connection terminal and that, when inserted from the end of the shielded wire protruding from the core wire and the insulating inner skin, hits the insulating outer end face and positions the connection terminal. Characteristic terminal treatment structure of shielded wires.

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