JPH0760712B2 - Termination device for multiple shielded wire - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a termination device for multiple shielded wires, and more particularly to a termination device suitable for connecting a double shielded wire to a connecting member such as a plug or a jack of a connector.

[0002]

2. Description of the Related Art A double shielded wire generally includes at least one core wire formed by coating a conductor wire with an insulating film, an inner shield layer such as a metal mesh disposed around the core wire, and an inner shield layer. An inner coating layer made of an electrically insulating material such as a synthetic resin disposed around the shield layer, an outer shield layer such as a metal mesh disposed around the inner coating layer, and the outer shield layer And an outer cover layer made of an electrically insulating material such as a synthetic resin, which is disposed around the outer cover.

When a connecting member such as a plug or a jack of a connector is attached to the end of the double shielded wire, the connecting member is directly attached to the end of the double shielded wire. That is, the core wire is crimped to a terminal such as a pin of the connecting member, the inner shield layer is processed into one linear body, and then crimped to another terminal of the connecting member, and the outer shield layer is formed into one linear body. After being processed into a body, it is connected to a member such as a cover of a connecting member.

However, in the method of directly attaching the connecting member to the end portion of the double shielded wire, the work of processing the inner shield layer and the outer shield layer into a single linear body is complicated and troublesome, and thus the double shielded wire is doubled. It takes a long time to process the end of the shielded wire.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to facilitate the end treatment work of a multi-shielded wire and shorten the work time for the end treatment.

[0006]

A terminating device for multiple shielded wires according to the present invention includes a main body having a through hole through which an end of the shielded wire passes, the main body extending from the base to one side. A conductive first tubular portion and a conductive second tubular portion extending from the base portion in a direction opposite to the first tubular portion and electrically insulated from the first tubular portion. A second cylindrical portion, and at least a part of the through hole is formed.

In the main body, the first cylindrical portion is inserted between the outer shield layer of the multiple shielded wire and the inner coating layer inside the multiple shielded wire from the tip side of the shielded wire, and the second cylindrical portion is the inner shield layer. Is attached to the end of the shielded wire so as to be outside or inside. The first tubular portion and the outer shield layer can be connected to each other by pressure bonding using a tubular or annular auxiliary member, adhesion using solder or the like. Similarly, the second tubular portion and the inner shield layer can be connected to each other by pressure bonding using a tubular or annular auxiliary member, adhesion using solder or the like.

According to the present invention, since the main body is provided with the first and second tubular portions, it is sufficient to connect the outer and inner shield layers to the first and second tubular portions, respectively, and thus, the outer and inner shield layers. Since it is not necessary to perform the processing work for processing each of the above into one linear body, the end work of the shielded wire is facilitated, and the work time for the end treatment is shortened.

Further, a tubular or annular first auxiliary member having an inner diameter larger than the outer diameter of the first tubular portion, and a tubular or annular member having an inner diameter larger than the outer diameter of the second tubular portion. A second auxiliary member is preferably included. In this way, after inserting the first tubular portion between the outer shield layer and the inner coating layer and arranging the first auxiliary member so as to extend around the end portion of the outer shield layer, at least By pressurizing and deforming the first auxiliary member, it is possible to press the end portion of the outer shield layer against the first tubular portion and connect the both. In addition, the portion on the tip side of the inner shield layer is
After being folded back to the outer peripheral surface of the cylindrical portion of, and the second auxiliary member is arranged so as to extend around the end portion of the inner shield layer,
By pressing and deforming at least the second auxiliary member, it is possible to press the end portion of the inner shield layer against the second tubular portion and connect the both.

Instead of using the second auxiliary member having an inner diameter larger than the outer diameter of the second tubular portion, a second auxiliary member having an outer diameter smaller than the inner diameter of the second tubular portion may be used. . In this case, the second auxiliary member is inserted between the inner shield layer and the core wire from the tip side of the shield wire so that the inner shield layer is located between the second tubular portion and the second auxiliary member. After that, at least the second tubular portion is deformed under pressure, so that the end portion of the inner shield layer can be pressed against the inner surface of the second tubular portion, and the both can be connected.

Further, a conductive elongated member extending from the second auxiliary member, which is pressed against the inner shield layer by the second auxiliary member, can be included. The conductive long member can be used as a member connected to a terminal such as a connector.

Further, a cylindrical non-conductive cover having an inner diameter larger than the outer diameter of the outermost member of the second auxiliary member and the second cylindrical portion can be included.

In a preferred embodiment, the body is
Furthermore, a tubular non-conductive insulating portion mounted on the side of the second tubular portion of the base portion is provided, and the base portion is made of a conductive material integrally with the first tubular portion, The second tubular portion is coupled to the insulating portion and electrically insulated from the base portion and the first tubular portion by the insulating portion.

The base portion may have a male screw portion formed on the outer peripheral surface thereof. Further, a tubular protective member that is screwed into the male screw portion from the second tubular portion side, and a protective member that is screwed into the male screw portion from the first tubular portion side are provided. A nut for releasably maintaining the body may be included.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to FIG.
A plurality of core wires 12 in which the conductor wires are covered with an insulating film, a conductive inner shield layer 14 such as a metal mesh disposed around the core wires, and a non-conductive inner shield layer disposed around the inner shield layers. Inner coating layer 16 made of a material such as a synthetic resin, a conductive outer shield layer 18 such as a metal mesh disposed around the inner coating layer, and a non-conductive outer shield layer disposed around the outer shield layer. And an outer coating layer 20 made of a material such as a conductive synthetic resin.

The terminating device 22 attached to the end of the shielded wire 10 as described above has a main body 26 having a through hole 24 through which the end of the shielded wire 10 is passed, and the main body 26.
6 includes first and second conductive auxiliary members 28 and 30 which are used when mounted on the end portion of 6.

As shown in FIG. 2, the body 26 includes a recess 32.
An electrically conductive first tube portion 36 extending from the base portion in a direction opposite to the recess 32 side and communicating with the recess 32, and a base portion 34 having a base portion 34 opposite to the first tube portion 36. Second cylindrical portion 38 that extends in the direction of the arrow and communicates with the recess 32.
And a cylindrical non-conductive insulating portion 40 coupled to the recess 32.

The base portion 34 is integrally formed with the first cylindrical portion 36 by a conductive material, and has a male screw portion 42 on the outer peripheral surface. The second tubular portion 38 is joined to the insulating portion 40 at one end thereof. A part of the insulating part 40 is
It projects from the recess 32. The base portion 34, the first and second tubular portions 36 and 38, and the insulating portion 40 are coupled so that they have a common axis. This allows
The through hole 24 described above is formed.

The main body 26 includes a base portion 34 and a first tubular portion 3.
6, the second tubular portion 38, and the insulating portion 40 may be separately manufactured, and then these may be press-fitted and fitted to each other to be joined, or the base portion 34 and the first tubular portion 36 may be combined. , Second
After the cylindrical portion 38 and the cylindrical portion 38 are separately manufactured, they may be joined by a synthetic resin integral molding process, and at the same time, the insulating portion 40 made of the synthetic resin may be formed.

In the illustrated example, the first auxiliary member 28 is the first
The tubular member has an inner diameter slightly larger than the outer diameter of the tubular portion 36 and is longer than the first tubular portion 36. On the other hand, the second auxiliary member 30 is a tubular member having an inner diameter slightly larger than the outer diameter of the second tubular portion 38 and shorter than the second tubular portion 38. However, the first and second auxiliary members 28 and 30
May be tubular or annular members having other length dimensions, as long as they are annular.

As shown in FIGS. 1 to 4, the second auxiliary member 3
0 is a pair of fixed portions 30 at one end of the tubular main body 30a.
b, and the conductive long member 44 is fixed to the fixing portion 30b. The conductive elongated member 44 is, in the example shown,
It is a lead wire having a conductive member and a non-conductive insulating film surrounding the conductive member excluding both ends thereof, and is fixed to the fixing portion 30b at the insulating film portion.

In the conductive elongated member 44, for example, as shown in FIG. 3, before the fixing portion 30b is deformed, the insulating film portion thereof is arranged on the fixing portion 30b, and then the fixing portion 30b is folded. By deforming under pressure, it can be attached to the second auxiliary member 30 so as not to separate. However, the conductive member of the conductive long member is replaced by the second auxiliary member 30.
May be adhered to the second auxiliary member 30 by soldering or the like, or a linear member having no insulating film may be used as the conductive long member. .

The terminating device 22 also has a tubular cover 46 fitted to the insulating portion 40 after the main body 26 is mounted on the shield wire 10 and a tubular shape screwed to the male screw portion 42 as described later. Nut 5 that is screwed onto the protective member 48 of FIG.
Including 0 and.

As shown in FIG. 2, the cover 46 has a cylindrical main body portion 46a and a step portion 46b at one end edge of the main body portion and having a diameter smaller than that of the main body portion. It is cut off at the entire cutting portion 46c. The cover 46 is made of a non-conductive material such as synthetic resin so as to be elastically deformable. The protective member 48 and the nut 50 are preferably made of a metal material, but may be made of a synthetic resin material. As shown in FIG. 1, the protection member 48 has female screw portions 48 a and 48 b which can be screwed into the male screw portion 42.
Has at the end

Next, referring to FIGS. 5, 6 and 7,
After attaching the terminating device 22 to the end of the shielded wire 10,
A method of connecting to a connecting member such as a plug or a jack will be described.

First, as shown in FIG. 5A, the tip of the outer coating layer 20 of the shielded wire 10 is removed. As a result, the tip of the outer shield layer 18 is exposed.

Next, as shown in FIG. 5B, the tip of the exposed portion of the outer shield layer 18 is the first tubular portion 3.
It is removed, leaving only about the same length as 6. As a result, the tip of the inner coating layer 16 is exposed.

Next, as shown in FIG. 5C, after the shield wire 10 is passed through the nut 46 and the first auxiliary member 28, the tip end portion of the shield wire 10 is on the side of the first tubular portion 36. Through the through hole 24, and the first tubular portion 36 is inserted between the exposed portion of the outer shield layer 18 and the inner coating layer 16.

Next, as shown in FIG. 5D, after the first auxiliary member 28 is moved around the exposed portion of the outer shield layer 18, the first auxiliary member 28 is deformed under pressure. It As a result, the exposed portion of the outer shield layer 18 is sandwiched between the first auxiliary member 28 and the first tubular portion 36 and pressure-bonded to the first auxiliary member 28 and the first tubular portion 36. To be done. Further, the tip portion of the outer coating layer 20 is protected by the first auxiliary member 28. Thereby, the outer coating layer 2
The first auxiliary member 28 prevents damage to the zero tip portion for a long period of time.

Next, in the state shown in FIG. 5D, the portion of the inner coating layer 16 protruding from the second tubular portion 38 is removed. As a result, the inner shield layer 14 is exposed.

Next, as shown in FIG. 6A, the tip of the exposed portion of the inner shield layer 14 is located at the second cylindrical portion 3.
It is removed leaving only a length slightly shorter than 8. As a result, the core wire 12 is exposed.

Next, as shown in FIG. 6B, the exposed portion of the inner shield layer 14 is folded back to the outside of the second tubular portion 38, and then the second auxiliary member 30 is folded back. It is fitted on the outside of the shield layer 14. At this time, one end of the conductive member of the conductive long member 44 is
Is disposed between the auxiliary member 30 and the folded back inner shield layer 14.

Next, as shown in FIG. 6C, the second auxiliary member 30 is pressed and deformed. As a result, the folded back portion of the inner shield layer 14 has the second auxiliary member 30.
And the second tubular portion 38, and is crimped to the second auxiliary member 30 and the second tubular portion 38. In addition, one end of the conductive member of the conductive elongated member 44 has the second auxiliary member 3
It is sandwiched between 0 and the folded back portion of the inner shield layer 14, and pressure-bonded to the second auxiliary member 30 and the folded back portion of the inner shield layer 14. Conductive long member 44
Is stably maintained for a long period of time in a state in which the conductive member is securely connected to the inner shield layer 14.

Next, as shown in FIG. 6D, the insulating film at the tip of each core wire 12 is removed. As a result, the tip of the conductive member of each core wire 12 is exposed. At this time,
You may perform the work which exposes the front-end | tip part of the electroconductive member of the electroconductive long member 44. Core wire 12 and conductive long member 4
4 is exposed, the terminal 52 of a connecting member such as a plug or a jack is connected to each core wire 12 in a state in which the end portion of the conductive member is exposed.
And it is fitted to the exposed portion of the conductive member of the conductive elongated member 44.

Next, as shown in FIG. 7A, each terminal 52 is crimped to the tip of the corresponding conductive member.

Then, as shown in FIG. 7B, after the female screw portion 48a of the protective member 48 is screwed into the male screw portion 42 of the main body 26, the cover 46 is provided on the side opposite to the step portion 46b. The connecting member 5 such as a known plug or jack is fitted to the insulating portion 40 of the main body 26 at each part and each terminal 52 is known.
It is attached to 4.

Thereafter, as shown in FIG. 7C, the connecting member 54 is connected to the protective member 48, and the nut 50 is attached.
Is screwed into the male screw portion 42 of the main body 26. The connecting member 54 includes, for example, the protective member 4 so that the female screw portion 48a of the protective member 48 is disengaged from the male screw portion 42 of the main body 26.
After screwing 8 into the main body 26 largely, the connecting member 54a is screwed to the male screw portion 42 in reverse and the male screw portion 54a of the connecting member 54 is screwed to the female screw portion 48b. Is the step 4 of the cover 46
The protection member 48 can be coupled to the protection member 48 by rotating the protection member 48 with respect to the main body 26 and the connecting member 54 until it abuts against 6b.

The terminating device 22 has the following technical effects.

Outer and inner shield layers 18 and 14
To the first and second auxiliary members 28 and 3 respectively.
0 to connect to the first and second cylindrical portions 36 and 38, it is not necessary to perform a processing operation for processing each of the outer and inner shield layers 18 and 14 into one linear body, and The end treatment of the wire 10 is facilitated and the working time for the end treatment is shortened.

Base portion 34, first tubular portion 36, second tubular portion 3
8 and the insulating part 40 are combined, the terminating device 2
After attaching 2 to the end portion of the shielded wire 10, the connection position of the shield layer to the first and second cylindrical portions in the longitudinal direction of the shielded wire 10 does not relatively displace.

Since the second tubular portion 38 is insulated from the base portion 34 and the first tubular portion 36, the inner and outer shield layers 14 and 18 are kept electrically insulated for a long period of time.

The inner shield layer 14 is made of a conductive long member 44.
Therefore, the insulation state between the inner and outer shield layers 14 and 18 is reliably maintained for a long period of time.

Since the cover 46 is provided, even when the protective member 48 is attached to the main body 26, the inner and outer shield layers 14 are
The insulation state between and 18 is more reliably maintained for a long period of time.

Instead of using the second auxiliary member 30 having an inner diameter larger than the outer diameter of the second tubular portion 38, it is smaller than the inner diameter of the second tubular portion 38 as in the terminator 56 shown in FIG. You may use the 2nd auxiliary member 58 which has an outer diameter. In this case, the second auxiliary member 58 is shielded between the inner shield layer 14 and the core wire 12 so that the inner shield layer 14 is located between the second tubular portion 38 and the second auxiliary member 58. After inserting from the tip side of the wire 10, at least the second
By pressurizing and deforming the tip portion of the tubular portion 38, the end portion of the inner shield layer 14 can be pressed against the inner surface of the second tubular portion 38 to connect the two.

The invention is not limited to the embodiments described above.
For example, the present invention can be used as a terminating device attached to an end of a multiple shield wire such as a triple shield wire other than the double shield wire. Further, instead of using the first and second auxiliary members 28 and 30, the shield layers 14 and 18 may be bonded to the corresponding first and second cylindrical portions 36 and 38 by soldering or the like. Furthermore, the protective member 48
May be a member common to one member of the connecting member 54. Furthermore, the cover 46 and the nut 5
0 is not always necessary.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment in which a termination device of the present invention is attached to an end portion of a double shielded wire.

FIG. 2 is an exploded perspective view of a main part of the terminal device of the present invention.

FIG. 3 is a perspective view showing an example of a second auxiliary member before completion.

FIG. 4 is a side view showing an example of a second auxiliary member after completion.

FIG. 5 is a diagram for explaining an embodiment of a method of mounting the termination device of the present invention on an end portion of a double shielded wire.

FIG. 6 is a diagram showing a step that follows the step shown in FIG.

FIG. 7 is a diagram showing a step that follows the step shown in FIG. 6, showing an embodiment of the method for connecting the terminating device of the present invention to the connecting member.

FIG. 8 is a cross-sectional view showing an embodiment in which another terminating device of the present invention is attached to an end of a double shielded wire.

[Explanation of symbols]

 10 Double Shielded Wire 12 Core Wire 14 Inner Shield Layer 16 Inner Cover Layer 18 Outer Shield Layer 20 Outer Cover Layer 22, 56 Termination Device 24 Through Hole 26 Main Body 28 First Auxiliary Member 30, 58 Second Auxiliary Member 32 Concave Location 34 Base portion 36 First tubular portion 38 Second tubular portion 40 Insulating portion 42 Male screw portion 44 Conductive long member 46 Cover 48 Protective member 50 Nut 52 Terminal 54 Connecting member

Claims (12)

[Claims] 1. A terminating device to be attached to an end of a multiple shield wire, the through hole having an end of the shield wire passed therethrough.
A main body having a base portion, a conductive first tubular portion extending from the base portion to one side, and a conductive second tubular portion extending from the base portion in a direction opposite to the first tubular portion. e Bei a second cylindrical portion which is electrically insulated with respect to the a cylindrical portion the first cylindrical portion, said first and second tubular portions said through hole
A termination device for multiple shielded lines forming at least a part of the . 2. A tubular or annular first auxiliary member having an inner diameter larger than the outer diameter of the first tubular portion, and a tubular shape having an inner diameter larger than the outer diameter of the second tubular portion, or The device of claim 1, including an annular second auxiliary member. 3. A tubular or annular first auxiliary member having an inner diameter larger than the outer diameter of the first tubular portion, and a tubular shape having an outer diameter smaller than the inner diameter of the second tubular portion, or An apparatus according to claim 1, including an annular second auxiliary member. 4. The device of claim 2 or 3, further comprising a conductive elongate member extending from the second auxiliary member. 5. A tubular non-conductive cover having an inner diameter larger than the outer diameters of the outermost members of the second auxiliary member and the second tubular portion. The device according to 2, 3, or 4. 6. The main body further comprises a tubular non-conductive insulating portion mounted on the side of the second tubular portion of the base portion, wherein the base portion is made of a conductive material and the first tubular portion is formed. And the second tubular portion is coupled to the insulating portion and electrically insulated from the base portion and the first tubular portion by the insulating portion. The described device. Wherein said base has an outer peripheral surface of the male screw portion is formed, apparatus according to any one of claims 1-6. 8. A tubular protective member screwed to the male screw portion from the second tubular portion side, and screwed to the male screw portion from the first tubular portion side. 8. The device of claim 7, including a nut releasably maintaining the protective member on the body. 9. A terminating device to be attached to an end of a multiple shield wire, the main body having a through hole through which the end of the shield wire passes, and the main body being attached to the end of the shield wire. First and second cylindrical or annular shapes that are sometimes used
The auxiliary body of the main body, the main body includes a base portion, a conductive first tubular portion extending from the base portion to one side, and a conductive second tubular portion extending from the base portion in a direction opposite to the first tubular portion. A second cylindrical portion electrically isolated from the first cylindrical portion .
A tubular portion, wherein the first and second tubular portions are the through holes
Of the first auxiliary member, the inner diameter of the first auxiliary member is larger than the outer diameter of the first cylindrical portion, and the inner diameter of the second auxiliary member is larger than the outer diameter of the second cylindrical portion. A large terminal device for multiple shielded lines. 10. A terminating device to be attached to an end of a multiple shield wire, the main body having a through hole through which the end of the shield wire passes, and the main body being attached to the end of the shield wire. The main body includes a cylindrical or annular first and second auxiliary member, and a conductive first cylindrical portion extending from the base portion to one side, and the base portion to the first auxiliary member. A second electrically conductive tubular portion extending in a direction opposite to the tubular portion of the second electrically insulating portion, the second electrically conductive tubular portion being electrically insulated from the first tubular portion .
And a tubular portion of the first and second tubular portions,
Forming at least a part of the hole, the inner diameter of the first auxiliary member is larger than the outer diameter of the first cylindrical portion, and the outer diameter of the second auxiliary member is the inner diameter of the second cylindrical portion. Termination device for multiple shielded lines, which is smaller. 11. A book attached to the end of a multi-shielded wire
A body, the body includes a base, a conductive first tube extending from the base to one side, and a conductive second tube extending from the base in a direction opposite to the first tube. And a second tubular portion electrically insulated from the first tubular portion.
For example, the ends of the shield wire penetrates through from the side of the first tubular portion on the side of the second cylindrical portion, the end portion of the outer shield layer of the shielded cable external shield layer and this A cylindrical or ring-shaped first outer peripheral surface of the first cylindrical portion inserted from the tip end side of the shield wire between the inner inner coating layer
Of the shield wire, the inner shield layer of the shield wire is folded back to the outer peripheral surface of the second tubular portion and is pressed by the tubular or annular second auxiliary member. A termination device for multiple shielded wires, wherein the core wire projects from the second tubular portion. 12. A book attached to the end of a multi-shielded wire
A body, the body includes a base, a conductive first tube extending from the base to one side, and a conductive second tube extending from the base in a direction opposite to the first tube. And a second tubular portion electrically insulated from the first tubular portion.
For example, an end portion of the multi-shielded cable extends through the side of the second cylindrical portion from a side of the first cylindrical portion, the end portion of the outer shield layer of said shield wire which the external shield layer The shield wire is pressed against the outer peripheral surface of the first cylinder portion inserted from the end side of the shield wire between the inner cover layer and the inner cover layer by a cylindrical or annular first auxiliary member. The inner shield layer is formed by a cylindrical or annular second auxiliary member inserted between the inner shield layer and the core wire inside the inner shield layer from the tip side of the shield wire, and the inner surface of the second cylinder portion is The terminating device for multiple shielded wires, wherein the core wire is pressed by the second auxiliary member, and the core wire projects from the second auxiliary member.