JP2016219296A - Shield conductor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shield conductor in which the number of components can be reduced.SOLUTION: Provided is a shield conductor comprising: an electric wire 11; a shield member 12 surrounding and shielding the electric wire 11; a shield pipe 12P composing the shield member 12 and having rigidity capable of holding a prescribed shape;; a shield tube 12T composing the shield member 12 and having flexibility; a ring part 21 of connecting the edge part of the shield tube 12T to the edge part of the shield pipe 12P; and a metallic multifunctional component 20 integrally having a fixed part 22 fixed to the metallic part of the car body B.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a shield conductor.

  2. Description of the Related Art Conventionally, a shield conductor is known in which an electric wire wired to a vehicle or the like is surrounded by various shield members so as to shield noise. For example, the shield conductor described in Patent Document 1 below is a shield member that is bent into a predetermined shape along the wiring path of the electric wire as a shield member, and a flexible that can be bent relatively freely. The shield tube which has property. The shield tube is connected and fixed by caulking to the end of the shield pipe with caulking rings.

Japanese Patent Laying-Open No. 2015-76899

  By the way, the shield conductor configured as described above is not only a caulking ring for connecting the shield pipe and the shield tube, but also a fixing member for fixing the shield pipe to the vehicle body and a body for grounding the shield member. There was a tendency for the number of parts to increase because a ground terminal or the like was required.

  The present invention has been completed based on the above circumstances, and an object thereof is to provide a shield conductor capable of reducing the number of parts.

  The shield conductor of the present invention includes an electric wire, a shield member that surrounds and shields the electric wire, a shield pipe that constitutes the shield member and has rigidity capable of holding a predetermined shape, and the shield member A metal having integrally a flexible shield tube, a ring portion connecting the end portion of the shield tube to the end portion of the shield pipe, and a fixing portion fixed to a metal portion of the vehicle body Multifunctional parts made of

  According to the present invention, one multi-functional component functions as a caulking ring for connecting the shield pipe and the shield tube, a function as a fixing component for fixing the shield pipe to the vehicle body, and a shield member. Since it has a function as a ground terminal for body grounding, the number of parts can be reduced.

The partial expanded side view which shows the structure of the edge part of the shield conductor in Example 1 Sectional drawing which shows the shield conductor in the state where the multifunctional part is fixed to the vehicle body Sectional view of shield conductor showing how to install multi-functional parts (A) is the elements on larger scale of the multifunctional part which shows a mode that the latching protrusion is latched to a latching hole, (B) is the elements on larger scale of the multifunctional part which shows the state which the latching protrusion latched in the latching hole. Figure Sectional view showing the shield conductor with multi-functional parts attached Sectional drawing which shows the shield conductor in Example 2

Preferred embodiments of the present invention are shown below.
In the shield conductor of the present invention, an open portion that opens a part in the circumferential direction may be formed in the ring portion, and the ring portion may be deformable to an open state. According to such a configuration, since the ring portion can be opened and fitted onto the shield pipe, the multi-function component can be easily attached.

The shield conductor of the present invention may include a caulking portion that reduces the diameter of the ring portion by caulking the ring portion.
In the shield conductor of the present invention, the ring portion may include a diameter reducing operation portion that reduces the diameter of the ring portion by rotating a screw.

<Example>
Hereinafter, an embodiment embodying the present invention will be described in detail with reference to FIGS.
The shield conductor 10 in this embodiment is attached to a vehicle, and includes a plurality of (two in this embodiment) electric wires 11 and a shield member 12 that surrounds and shields the electric wires 11. Each electric wire 11 passes through the outdoor (under the floor) and is connected to various devices M mounted on the vehicle.

  The electric wire 11 is formed by surrounding an outer periphery of a conductor 13 formed by twisting a plurality of strands with an insulating coating 14. The conductor 13 is made of copper, a copper alloy, aluminum, or an aluminum alloy.

  A terminal fitting 15 connected to terminal portions of various devices M mounted on the vehicle is fixed to the terminal portion of the electric wire 11. The terminal fitting 15 is formed by bending a conductive metal plate punched into a predetermined shape. The terminal fitting 15 includes a first connection portion 16 connected to the terminal portions of the various devices M and a second connection portion 17 connected to the terminal portions of the electric wires 11. The terminal fitting 15 has an L-shape that is bent so that the first connection portion 16 and the second connection portion 17 are substantially perpendicular.

  A connection hole is formed through the first connection portion 16, and the second connection portion 17 is provided with a pair of caulking pieces that are caulked to the terminal portions of the electric wires 11. The second connection portion 17 is crimped to the conductor 13 exposed by peeling off the insulation coating 14 at the end portion of each electric wire 11.

  The shield member 12 includes a shield pipe 12P having rigidity capable of maintaining a predetermined shape, and a shield tube 12T having flexibility that can be deformed relatively easily.

  The shield pipe 12P is a metal (copper, aluminum, or the like) pipe, and a space in which the two electric wires 11 can be collectively inserted is secured. After the electric wire 11 is inserted, the shield pipe 12P is bent into a predetermined shape so as to follow the determined routing route of the electric wire 11. The shield pipe 12P has a substantially circular cross section and is relatively long.

  The shield tube 12T is a braided member formed by knitting a conductive fine metal wire (for example, copper) into a mesh shape to form a cylinder. The shield tube 12T collectively surrounds the portion of the electric wire 11 drawn from the shield pipe 12P. One end side of the shield tube 12T is put on the outer peripheral side of the shield pipe 12P, and is fixed to the end portion of the shield pipe 12P by a multi-functional component 20 described later so as to be conductive. The other end side of the shield tube 12T is fixed to the insulating coating 14 of the electric wire 11 by a fixing material 18 such as a tape.

  Now, the shield conductor 10 includes a multi-function component 20 having a large number of functions as a single component. The multi-function component 20 is made of metal, and integrally includes a ring portion 21 that connects the end portion of the shield tube 12T to the end portion of the shield pipe 12P, and a fixing portion 22 that is fixed to the metal portion of the vehicle body B. ing.

  The ring portion 21 has an annular shape that is fitted on the shield pipe 12P. The ring portion 21 is formed of an elongated metal plate material having a length that can be wound around the entire circumference of the shield pipe 12P, and has a shape in which the entire circumference is closed.

  The ring part 21 is provided with a caulking part 23 that reduces the diameter of the ring part 21 by caulking. The caulking portion 23 protrudes outward in the radial direction of the ring portion 21.

  Further, as shown in FIG. 3, the ring portion 21 is partially cut off in the circumferential direction to form an open portion 24, which can be elastically deformed in an open state. In addition, the ring part 21 always makes the state in which the opening part 24 is closed and the ring part 21 is closed.

  The ring part 21 is provided with a locking structure that can lock each other and hold the ring part 21 in a closed state (see FIG. 5). The locking structure is provided at the end portions of the ring portion 21 located on both sides of the opening portion 24 (hereinafter referred to as the first end portion 21F and the second end portion 21S). The first end portion 21F and the second end portion 21S are arranged so as to overlap in the inner and outer directions when the ring portion 21 is closed. The first end portion 21F is disposed inside the second end portion 21S.

The locking structure includes a pair of locking protrusions 25 and a locking hole 26. The locking protrusions 25 are provided at the first end 21F, and the locking holes 26 are provided at the second end 21S.
The locking hole 26 is a through hole that penetrates the ring portion 21 in the inner and outer directions. A plurality (two in this embodiment) of the locking holes 26 are provided side by side in the circumferential direction of the ring portion 21. Both of the two locking holes 26 have a substantially square shape, and a locking hole at a position close to the open portion 24 side in the second end portion 21S (hereinafter referred to as the first locking hole 26F) is a position farther than that. (Refer to FIG. 4). The first locking hole 26 </ b> F is provided with a locking piece 27 that can be locked in the recess 28 inside the locking protrusion 25.

  Two locking projections 25 are provided side by side in the circumferential direction of the ring portion 21 corresponding to the locking holes 26. The locking projection 25 is provided so as to protrude outward in the radial direction of the ring portion 21, and a recess 28 is formed on the inner side.

  The front surface of each locking projection 25 in the closing direction of the opening portion 24 is an inclined surface whose projecting dimension gradually increases toward the rear side in the same direction, and the rear surface is substantially orthogonal to the circumferential direction. It is said to be a slick surface. In addition, the left and right side surfaces of each locking projection 25 are inclined surfaces whose projecting dimensions gradually increase from both ends in the left-right direction (width direction) toward the center.

  Of the two locking projections 25, a locking projection that locks into the first locking hole 26F (hereinafter referred to as the first locking projection 25F) is a locking projection that locks into the second locking hole 26S (hereinafter referred to as “first locking projection 25F”). , Referred to as the second locking projection 25S). The protruding end of the first locking projection 25F is formed in a sharp shape by the inclined surfaces on the front side and the left and right sides, and the protruding end of the second locking projection 25S is a flat surface that is substantially parallel to the circumferential direction. Is formed.

  As shown in FIG. 3, the fixing portion 22 is provided continuously and integrally with the first end portion 21 </ b> F of the ring portion 21. The fixing portion 22 is screwed to the metal portion of the vehicle body B. The fixed part 22 is formed so that the overall outer shape is thicker than the ring part 21, and protrudes outward in the radial direction of the ring part 21. Note that the dimensions of the fixed portion 22 in the inner and outer directions are constant.

  The fixing portion 22 is provided with a screw hole 22H through which the shaft portion of the screw S is passed. The screw hole 22H penetrates the fixed portion 22 in the inner and outer directions. The plate surface 29 connected to the inner peripheral surface of the ring portion 21 in the fixed portion 22 is a flat surface on which the head of the screw S passed through the screw hole 22H can come into contact.

Next, an example of the manufacturing work of the shield conductor 10 in the present embodiment will be described.
First, the shield tube 12T is connected to the shield pipe 12P through which the electric wire 11 is inserted. The end portion of the shield tube 12T is covered with the end portion of the shield pipe 12P, and the multifunctional component 20 is fitted to the end portion of the shield pipe 12P to which the shield tube 12T is attached. At this time, as shown in FIG. 3, the ring portion 21 is opened and externally fitted to the shield pipe 12 </ b> P, and the locking projection 25 is locked in the locking hole 26 as shown in FIG. 4. The locking protrusions 25 are fitted in the corresponding locking holes 26, and the rear surfaces of the locking protrusions 25 are locked in the locking holes 26. Thereby, the ring part 21 is hold | maintained in the closed state, and the multifunctional component 20 is attached to the shield pipe 12P.

As shown in FIG. 4, when the caulking portion 23 is caulked, the ring portion 21 is reduced in diameter, and the shield tube 12T is in close contact with the shield pipe 12P over the entire circumference. Thus, the shield pipe 12P and the shield tube 12T are electrically connected.
Thus, the manufacturing work of the shield conductor 10 is completed.

Next, an example of an operation for attaching the shield conductor 10 to the vehicle body B will be described.
A plurality of portions of the shield pipe 12P are appropriately fixed to the vehicle body B by fixing members (not shown), and the multi-function portion fixing portion 22 is fixed to the metal portion of the vehicle body B. As shown in FIG. 2, the outer end of the fixed portion 22 faces the vehicle body B side, and is screwed into the metal portion of the vehicle body B through the screw S through the screw hole 22H from the plate surface 29 side. Thereby, the fixing | fixed part 22 is firmly fixed to the metal part of the vehicle body B, and the shield member 12 is body-grounded.
Thus, the work for attaching the shield conductor 10 to the vehicle body B is completed.

Next, operations and effects of the embodiment configured as described above will be described.
The shield conductor 10 of the present embodiment includes an electric wire 11 and a shield member 12 that surrounds and shields the electric wire 11, and the shield member 12 includes a shield pipe 12P having rigidity capable of holding a predetermined shape, And a shield tube 12T having flexibility. The shield conductor 10 has a metal multi-function integrally having a ring portion 21 connecting the end portion of the shield tube 12T to the end portion of the shield pipe 12P and a fixing portion 22 fixed to the metal portion of the vehicle body B. A part 20 is provided.

  According to this configuration, one multifunctional part 20 functions as a caulking ring for connecting the shield pipe 12P and the shield tube 12T, and functions as a fixing part for fixing the shield pipe 12P to the vehicle body B. And the function as a ground terminal for body grounding of the shield member 12, the number of parts can be reduced.

  Moreover, the ring part 21 is formed with an open part 24 that opens a part in the circumferential direction, and the ring part 21 can be deformed to an open state. According to this configuration, since the ring portion 21 can be opened and fitted onto the shield pipe 12P, the multi-function component 20 can be easily attached.

<Example 2>
Next, a shield conductor 30 according to a second embodiment embodying the present invention will be described with reference to FIG.
The shield conductor 30 according to the present embodiment is different from the first embodiment in that the shield conductor 30 includes a diameter reducing operation portion 32 that reduces the diameter of the ring portion 21 by the rotation of the screw 31. In addition, the same code | symbol is attached | subjected to the structure similar to Example 1, and the overlapping description is abbreviate | omitted.

  As in the first embodiment, the shield conductor 30 according to the present embodiment includes the electric wire 11 and the shield member 12 that surrounds and shields the electric wire 11, and the shield member 12 can hold a predetermined shape. A shield pipe 12P having rigidity and a shield tube 12T having flexibility are provided.

  Similarly to the first embodiment, the shield conductor 30 integrally includes a ring portion 21 connecting the end portion of the shield tube 12T to the end portion of the shield pipe 12P and a fixing portion 22 fixed to the metal portion of the vehicle body B. A metal multi-functional part 20 is provided. As in the first embodiment, the ring portion 21 of the multi-function component 20 has an open portion 24 formed in a part in the circumferential direction, and can be locked together to hold the ring portion 21 in a closed state. It has.

  The ring unit 21 includes a diameter reduction operation unit 32 that reduces the diameter of the ring unit 21 by rotating the screw 31. The diameter reducing operation unit 32 includes an inner peripheral portion 32U and an outer peripheral portion 32S which are arranged to overlap in the inner and outer directions in a state in which the ring portion 21 can be relatively displaced in the circumferential direction.

  The inner circumferential portion 32U is provided with a screw holding portion 34 that holds the screw 31 in a state where the rotation of the screw 31 is allowed. The screw holding portion 34 has a box shape that can accommodate the shaft portion 31Z of the screw 31 therein, and protrudes from the inner peripheral portion 32U. The shaft portion 31 </ b> Z of the screw 31 held by the screw holding portion 34 is arranged along the outer peripheral portion 32 </ b> S inserted into the screw holding portion 34.

  The outer peripheral portion 32S is provided with a plurality of groove portions 35 that can be engaged with screw threads provided in a spiral shape on the shaft portion 31Z of the screw 31. The groove portion 35 has an elongated shape in the width direction (axial direction) of the ring portion 21 and penetrates the outer peripheral portion 32S. The plurality of groove portions 35 are formed at a substantially constant pitch in the circumferential direction of the ring portion 21.

  Then, when the screw 31 is rotated in one direction while the thread of the shaft portion 31Z of the screw 31 is engaged with the groove portion 35, the outer peripheral portion 32S is relative to the direction in which the ring portion 21 is reduced in diameter along the inner peripheral portion 32U. Displace. When the screw 31 is rotated in the opposite direction, the outer peripheral portion 32S is relatively displaced in the direction of expanding the ring portion 21.

  In the manufacturing work of the shield conductor 30 in the present embodiment, as in the first embodiment, the end of the shield tube 12T is covered with the end of the shield pipe 12P, and the ring part 21 is opened, so that the multifunctional component 20 is mounted. After fitting externally on the shield pipe 12P and locking the locking projection 25 in the locking hole 26, the screw 31 is turned in one direction to reduce the diameter of the ring portion 21 and connect the shield tube 12T and the shield pipe 12P. To do.

  As described above, in the present embodiment, as in the first embodiment, one multi-function component 20 functions as a caulking ring for connecting the shield pipe 12P and the shield tube 12T, and the shield pipe 12P is connected to the vehicle body B. The number of parts can be reduced because it has a function as a fixed part 22 product for fixing to a shield and a function as a ground terminal for body grounding the shield member 12.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above embodiment, the shield pipe 12P is made of metal (copper, aluminum, etc.). However, the shield pipe 12P is not limited to this, and any shield member having a predetermined rigidity may be used. A metal foil may be wound around the outer peripheral surface of the pipe.
(2) In the above embodiment, the shield tube 12T is a braided member. However, the present invention is not limited to this, and the shield tube may be a flexible shield member, for example, a corrugated metal corrugate. It may be a tube.
(3) In the above-described embodiment, the specific configuration of the locking structure has been illustrated. However, the configuration is not limited thereto, and the number, shape, position, and the like of the locking holes and the locking protrusions can be arbitrarily changed. Moreover, you may employ | adopt the latching structure of the form which is not provided with a latching protrusion and a latching hole.
(4) In the above embodiment, the ring portion 21 is formed with the open portion 24 that opens a part in the circumferential direction. However, the present invention is not limited to this, and for example, the ring portion has a diameter dimension that can be externally mounted on the shield pipe. It may have a form that is closed around the entire circumference.

B ... Vehicle body 10, 30 ... Shield conductor 11 ... Electric wire 12 ... Shield member 12P ... Shield pipe 12T ... Shield tube 20 ... Multi-functional part 21 ... Ring part 22 ... Fixing part 23 ... Caulking part 24 ... Opening part 31 ... Screw 32 ... Reduction operation section

Claims (4)

Electric wires,
A shielding member that surrounds and shields the electric wire;
A shield pipe that constitutes the shield member and has rigidity capable of holding a predetermined shape;
The shield member is configured, and a flexible shield tube;
A metal multi-functional component integrally having a ring portion connecting the end portion of the shield tube to the end portion of the shield pipe and a fixing portion fixed to the metal portion of the vehicle body;
Shield conductor comprising. In the ring part, an opening part that opens a part in the circumferential direction is formed,
The shield conductor according to claim 1, wherein the ring portion is deformable in an open state.   The shield conductor according to claim 1, further comprising a caulking portion that reduces the diameter of the ring portion by caulking the ring portion.   The shield conductor according to claim 1, wherein the ring portion includes a diameter reducing operation unit that reduces the diameter of the ring portion by rotation of a screw.

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