JP2013042171A - Attachment structure of shield shell - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an attachment structure of a shield shell which enables a shield shell to be securely attached to an attached part with goog workability.SOLUTION: An attachment structure of a shield shell 1 comprises: a shield shell 3; and an attached part 5. The shield shell 3 is attached to an end part 21a of a shield braid 21 covering an electric wire. The shield shell 3 includes a shell body 31 and fixing pieces 32. Each fixing piece 32 is provided so as to protrude from the shell body 31 and is overlapped with the attached part 5 along a direction C perpendicular to a direction K that the shield shell 3 is overlapped with the attached part 5 when the shield shell 3 is attached to the attached part 5. The fixing pieces 32 and the attached part 5 are respectively provided with a pair of holes 37 and a pair of holes 55 which communicate with each other and allow screws 6 to pass through the interior when the fixing pieces 32 are overlapped with the attached part 5.

Description

  The present invention relates to a shield shell attachment structure including a shield shell attached to an end portion of a shield member that covers an electric wire, and an attached portion to which the shield shell is attached.

  Various electronic devices are mounted on an automobile as a moving body. In the automobile, a wire harness is routed in order to transmit electric power, a control signal, and the like to the electronic device described above. The wire harness includes a plurality of electric wires and a connector attached to the electric wires.

  For example, a three-phase AC motor may be used as a traveling motor in the above-described automobile, for example, in an electric vehicle, a hybrid vehicle or a fuel cell vehicle. Since electric power is supplied to the motor, the electrical noise leaks to the outside from the terminal fittings of the electric wires and connectors that supply power to the motor, and the electric wires are electrically connected to other electric wires and other terminal fittings from the electric wires and the terminal fittings. There was a problem that a lot of noise flowed in.

  As a technique for solving such a problem, for example, a shielded wire fixing structure as shown in Patent Document 1 is known. This shielded wire fixing structure includes a shield member (braided conductor) covering the wire, an annular member, an elliptical columnar ring to which the shield member is attached, and a shield shell having a flange portion provided on the outer edge of the ring, With a band. The annular member is disposed inside the end portion of the shield member, and the tip of the shield member is folded inside and attached to the shield member. Then, the shield member is fixed to the shield shell by covering the end portion of the shield member to which the annular member is attached with the ring of the shield shell, arranging a band outside the end portion, and crimping the band.

  FIG. 10 shows a conventional shield shell mounting structure 101. As described above, the shield shell 103 to which the shield member is fixed is attached to the attached portion 105 arranged in the vertical direction (the band and the shield member are omitted in FIG. 10). In the shield shell 103, the flange portion 136 is overlapped with the attached portion 105, and four holes 137 and 155 provided in the flange portion 136 and the attached portion 105 are communicated with each other. Are attached to the attached portion 105 by screwing them in along the horizontal direction.

JP 2005-339933 A

  However, since the direction of screwing is parallel to the direction in which the shield member extends, the shield member is obstructive and screwing work is difficult, and further, when the attached portion is arranged in the vertical direction as shown in FIG. Since it is difficult to visually observe, the screw may fall during the screwing operation, resulting in poor workability. Moreover, since there are many screwing places, there existed a problem that the number of work processes was large, the work process was complicated, the number of parts was large, and cost was high.

  The present invention aims to solve such problems. That is, an object of the present invention is to provide a shield shell attachment structure that can attach the shield shell to the attachment portion with good workability and reliability.

  In order to solve the problems and achieve the object, the invention described in claim 1 includes a shield shell that is attached to an end of a shield member that covers an electric wire, and a mounted portion to which the shield shell is attached. In the shield shell mounting structure, when the shield shell is provided so as to protrude from the shell body and the shield shell is attached to the attached portion, the shell body and the attached portion overlap each other. A fixed piece that is superimposed on the attached portion along a direction intersecting with the fixed portion, and is provided on the fixed piece and the attached portion, and communicates when the fixed piece is overlaid on the attached portion. Thus, the shield shell mounting structure is provided with a pair of holes through which screw members are passed.

  According to a second aspect of the present invention, there is provided the shield shell mounting structure according to the first aspect, wherein the fixed piece protrudes inward of the shell main body. This is the mounting structure.

  According to the first aspect of the present invention, the shield shell is provided so as to protrude from the shell main body and the shell main body, and when the shield shell is attached to the attachment portion, the shell body and the attachment portion overlap each other. And a fixing piece that is overlapped with the attached portion along the intersecting direction, and is provided on the fixing piece and the attached portion. When the fixing piece is overlapped with the attached portion, the screw member communicates with the inside. The screw member can be screwed into the pair of holes along the direction intersecting the overlapping direction (that is, the extending direction of the shield member). In addition, the shield member or the like is not obstructed, and the shield shell can be attached to the attached portion with good workability. Further, when the attached portion is arranged in the vertical direction, the overlapping direction is a horizontal direction, and the fixing piece is overlapped on the attached portion along the vertical direction so that the screw member is paired along the vertical direction. Since the screw member is screwed into the hole, the screw member can be screwed from the upper side to the lower side, and the screwing operation can be reliably performed while visually observing. As a secondary effect, since the shield shell has a simple structure, the shield shell can be manufactured by press molding or the like, and the manufacturing cost can be reduced.

  According to the second aspect of the present invention, since the fixing piece is provided so as to protrude inward of the shell main body, the shell main body is fixed when the fixing piece is overlapped with the attached portion and fixed by the screw member. Is strongly pressed against the attached portion, and the shield shell can be securely attached to the attached portion.

It is a perspective view which shows the attachment structure of the shield shell concerning 1st embodiment of this invention. It is a perspective view from another direction of the shield shell to which the shield braid shown in FIG. 1 is attached. It is a perspective view which decomposes | disassembles and shows the shield shell to which the shield braid shown by FIG. 2 was attached. FIG. 4 is a side view of the shield shell shown in FIG. 3. It is sectional drawing along the VV line in FIG. 1 which shows the state just before attaching the shield shell shown in FIG. 1 to a to-be-attached part. FIG. 6 is a cross-sectional view showing a state where the shield shell shown in FIG. 5 is attached to the attached portion. It is a side view of the shield shell of the attachment structure of the shield shell concerning 2nd embodiment of this invention. It is sectional drawing which shows the state just before attaching the shield shell shown by FIG. 7 to a to-be-attached part. It is sectional drawing which shows the state by which the shield shell shown by FIG. 8 was attached to the to-be-attached part. It is a perspective view which shows the attachment structure of the conventional shield shell.

  A shield shell mounting structure according to a first embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 1, a shield shell mounting structure 1 according to a first embodiment of the present invention includes a shield component 2, a shield shell 3, a shield ring 4, a mounted portion 5, and a screw (screw member). 6).

  The shield component 2 has flexibility and is formed in a cylindrical shape. As shown in FIG. 1 and the like, the shield component 2 includes a shield braid 21 (corresponding to a shield member) and an outer sheath 22. The shield braid 21 is formed, for example, by knitting a strand made of a conductive metal material or the like, and has flexibility. The shield braid 21 is formed in a cylindrical shape (bag shape) as a whole. An electric wire (not shown) is passed through the shield braid 21.

  The electric wire includes a core wire made of a conductive metal material and a covering portion made of an insulating synthetic resin or the like. The core wire is formed by twisting a plurality of strands. The element wire constituting the core wire is made of a conductive metal material. Moreover, the core wire may be comprised from one strand. The electric wire is electrically connected to, for example, an AC / DC converter.

  The outer sheath 22 is made of an insulating synthetic resin or the like and is formed in a cylindrical shape (bag shape). The outer sheath 22 covers the shield braid 21. At the end of the shield part 2, the outer sheath 22 is removed and the shield braid 21 is exposed.

  The shield braid 21 of the shield component 2 having the above-described configuration is attached to the shield shell 3 in such a manner that the electric wire is covered inside the shield braid 21 and the inner diameter of the end 21a is expanded. The shield braid 21 electrically shields the electric wire from the outside of the shield braid 21.

  The shield shell 3 is formed by pressing a sheet metal or the like, for example. As shown in FIG. 2 and the like, the shield shell 3 is attached to the end 21a of the shield braid 21 that covers the electric wire. As shown in FIGS. 3 and 4, the shield shell 3 is integrally provided with a shell body 31, and a fixed piece 32 and an elastic piece 33 provided so as to protrude from the shell body 31. The shell body 31 includes a body part 34, a caulking part 35, and a flange part 36.

  The main body 34 is formed in a substantially cylindrical shape. The caulking portion 35 is connected to one end portion 34a (FIG. 4) of the main body portion 34, and is formed in an elliptical cylindrical shape. The main body part 34 and the caulking part 35 are arranged coaxially, that is, in series. The outer diameter of the main body 34 is larger than the outer diameter of the caulking portion 35. An end 21 a having an enlarged inner diameter of the shield braid 21 is placed on the outer peripheral surface of the caulking portion 35, and an electric wire is passed through the main body portion 34 and the caulking portion 35. The flange portion 36 protrudes from the outer edge on the other end 34 b (FIG. 4) side of the main body portion 34 toward the outer direction of the main body portion 34. The flange portion 36 is provided over substantially the entire circumference of the outer edge.

  The fixed piece 32 is formed in a plate shape having a substantially rectangular planar shape. The fixed piece 32 is connected to the flange portion 36 and protrudes in a direction perpendicular to the flange portion 36 and away from the caulking portion 35. A pair of fixed pieces 32 are provided with a space therebetween. When the shield shell 3 is attached to the attached portion 5, the fixing piece 32 is overlaid on the attached portion 5 along a direction C perpendicular to the direction K in which the shield shell 3 and the attached portion 5 overlap.

  The “direction K in which the shield shell 3 and the attached portion 5 overlap” (hereinafter simply referred to as “the overlapping direction K”) is a direction represented by an arrow K in FIG. 1, and is horizontal in the present embodiment. Match the direction. Further, the “direction C orthogonal to the overlapping direction K” is a direction represented by an arrow C in FIG. 1 and coincides with the vertical direction in the present embodiment.

  Each of the pair of fixed pieces 32 is provided with one of the pair of holes 37 and 55. One hole 37 is provided in total in the illustrated example. One hole 37 has a circular planar shape and penetrates the fixed piece 32.

  The elastic piece 33 is provided on the opposite side of the fixed piece 32 (below the fixed piece 32) across the axis of the shell body 31. The elastic piece 33 is connected to the other end portion 34b of the main body portion 34, and protrudes outward from the main body portion 34 and away from the main body portion 34. The elastic piece 33 is connected to the tip of the first piece 33a and the main body portion 34. Of the second piece 33b protruding in the direction approaching the main body 34, and a bent portion 33c that is a connecting portion between the first piece 33a and the second piece 33b, and is formed in an L-shaped cross section. . The bent portion 33 c is arranged on the side farther from the caulking portion 35 than the other end portion 34 b of the main body portion 34.

  When the shield shell 3 is attached to the attached portion 5, the elastic piece 33 having the above-described configuration contacts the elastic piece receiving portion 54 described later of the attached portion 5 while the bent portion 33 c is arranged in the horizontal direction. The first piece 33a is elastically deformed in a direction approaching the caulking portion 35. After that, as shown in FIG. 6, the bent portion 33c presses the elastic piece receiving portion 54 along the overlapping direction K by the elastic restoring force of the first piece 33a.

  The shield ring 4 is made of a conductive metal material, and is formed by bending a strip-shaped sheet metal or the like into a ring shape as shown in FIG. The inner diameter of the shield ring 4 is larger than the sum of twice the thickness of the end 21 a of the shield braid 21 and the outer diameter of the crimped portion 35 of the shield shell 3. The shield ring 4 is attached to the outside of the caulking portion 35 covered with the end portion 21 a of the shield braid 21, and positions the end portion 21 a between the caulking portion 35. The shield ring 4 is reduced in diameter by caulking the shield ring 4, and the end 21 a is sandwiched between the inner surface of the shield ring 4 and the outer peripheral surface of the caulking portion 35, so that the shield braid 21 has a shield shell. 3 is attached.

  The attached portion 5 is, for example, an outer wall arranged in the vertical direction of the shield case, and is formed from a conductive metal material. For example, a three-phase AC motor is accommodated in the shield case, and power from the AC / DC converter is supplied to the motor via an electric wire covered with the shield braid 21. As shown in FIG. 1, the mounted portion 5 includes a mounted surface 51 and a fixed piece receiving surface 52.

  The mounted surface 51 is a part of the outer surface of the mounted portion 5 and is arranged in the vertical direction. When the shield shell 3 is attached to the attached portion 5, the flange portion 36 of the shield shell 3 is overlaid on the attached surface 51. The attached surface 51 is provided with an electric wire passage hole 53 and an elastic piece receiving portion 54.

  The electric wire through hole 53 is provided through the attached surface 51 (attached portion 5). The electric wire through-hole 53 is formed in a circular planar shape, and its inner diameter is slightly smaller than the inner diameter of the main body 34 of the shield shell 3. When the shield braid 21 covers the electric wire and the shield shell 3 to which the shield braid 21 is attached is attached to the attached portion 5, the electric wire is passed through the electric wire passage hole 53.

  The elastic piece receiving portion 54 is provided in a concave shape from the attached surface 51, and the planar shape is formed in a substantially rectangular shape. The horizontal width of the elastic piece receiving portion 54 is slightly larger than the width of the elastic piece 33 of the shield shell 3 (the length of the bent portion 33c). When the shield shell 3 is attached to the attached portion 5, the elastic piece 33 is positioned in the elastic piece receiving portion 54. As described above, the bottom surface (the inner surface parallel to the vertical direction) of the elastic piece receiving portion 54 abuts on the bent portion 33c of the elastic piece 33 and is pressed along the overlapping direction K by the bent portion 33c.

  The fixed piece receiving surface 52 is a part of the outer surface of the attached portion 5, and is connected to the upper end of the attached surface 51 and arranged in the horizontal direction. When the shield shell 3 is attached to the attached portion 5, the fixed piece 32 of the shield shell 3 is overlaid on the fixed piece receiving surface 52 as described above. The fixed piece receiving surface 52 is provided with the other hole 55 of the pair of holes 37 and 55.

  The other hole 55 has a circular planar shape, and is provided along a direction C orthogonal to the overlapping direction K from the fixed piece receiving surface 52. The other hole 55 is provided corresponding to one hole 37 of the fixed piece 32, and a total of two holes 55 are provided in the illustrated example. The inner surface of the other hole 55 is provided with a thread groove. When the fixed piece 32 is stacked on the fixed piece receiving surface 52, the other hole 55 communicates with one hole 37 provided in the fixed piece 32, and the screw 6 is passed through the pair of holes 37, 55 communicated with each other. The

  The shield shell 3 is attached to the attached portion 5 having the above-described configuration. When the shield shell 3 is attached to the attached portion 5, the electrical noise leaking from the electric wire to the outside and the electrical noise flowing into the interior are grounded through the shield braid 21, the shield shell 3 and the attached portion 5 in order. Is done.

  As shown in FIG. 1 and the like, the screw 6 integrally includes a shaft portion 61 and a head portion 62 formed at one end of the shaft portion 61. A thread groove is formed on the outer peripheral surface of the shaft portion 61. When the fixed piece 32 of the shield shell 3 is overlapped with the fixed piece receiving surface 52 of the attached portion 5 and the pair of holes 37 and 55 communicate with each other, the shaft portion 61 is passed through the communicated pair of holes 37 and 55. Screwed into the pair of holes 37, 55. The shaft portion 61 is passed through the pair of holes 37 and 55 from the fixed piece 32 side (upper) to the fixed piece receiving surface 52 side (lower) along the direction C orthogonal to the overlapping direction K. The front end side of 61 is positioned in the attached portion 5. When the screw 6 is screwed into the pair of holes 37 and 55, the fixing piece 32 is sandwiched and fixed between the head 62 and the attachment surface 51, and the shield shell 3 is fixed to the attachment portion 5. The

  When the shield shell 3 is attached to the attached portion 5 in the shield shell attachment structure 1 having the above-described configuration, first, as shown in FIG. 2, the end 21a of the shield braid 21 is widened and the shield shell 3 is caulked. The shield ring 4 is attached to the outside of the crimped portion 35 covered with the portion 35 and the shield braid 21, and the shield ring 4 is crimped to attach the shield braid 21 to the shield shell 3.

  Then, as shown in FIG. 5, the shield shell 3 is brought closer to the attached portion 5, the flange portion 36 is overlaid on the attached surface 51 of the attached portion 5, and the fixed piece 32 is overlaid on the fixed piece receiving surface 52. Then, the pair of holes 37 and 55 communicate with each other. As shown in FIG. 6, the screw 6 is screwed into the pair of holes 37 and 55 communicated from the upper side to the lower side so that the shield shell 3 is attached to the attachment portion 5. Install. At this time, the elastic piece 33 is positioned in the elastic piece receiving portion 54, and the elastic piece 33 comes into contact with the bottom surface of the elastic piece receiving portion 54 to be elastically deformed and presses the bottom surface by an elastic restoring force.

  According to the present embodiment, the shield shell 3 is provided so as to protrude from the shell body 31 and the shell body 31, and when the shield shell 3 is attached to the attached portion 5, the direction C is perpendicular to the overlapping direction K. And a fixed piece 32 that is overlapped with the attached portion 5 along the fixing piece 32 and provided on the fixed piece 32 and the attached portion 5. When the fixed piece 32 is overlapped with the attached portion 5, the screw 6 communicates with the inside. Since the pair of holes 37 and 55 to be passed are provided, the screw 6 is placed in the pair of holes 37 and 55 along the direction C perpendicular to the overlapping direction K (that is, the direction in which the shield braid 21 extends). The shield braid 21 and the like are not obstructed during the screwing operation, and the shield shell 3 can be attached to the attached portion 5 with good workability. Further, the attached portion 5 is arranged in the vertical direction, and the fixing piece 32 is overlapped on the attached portion 5 along the direction C perpendicular to the overlapping direction K, that is, the vertical direction, and the screw 6 is moved in the vertical direction. Since the screw 6 is screwed into the pair of holes 37 and 55 along the upper side, the screw 6 can be screwed from the upper side to the lower side, and the screwing operation can be reliably performed while visually observing.

  When projecting from the shell body 31 and the shield shell 3 is attached to the attached portion 5, the attached portion 5 contacts the attached portion 5 and is elastically deformed, and the attached portion 5 is stretched along the overlapping direction K by elastic restoring force. Since the elastic piece 33 that is pressed is provided, there is no gap between the shield shell 3 and the attached portion 5 due to the elastic piece 33, and rattling of the shield shell 3 can be prevented. Thus, the shield shell 3 can be easily attached to the attached portion 5 by replacing a part of the screwing locations and reducing the screwing locations.

  When the shield shell 3 is attached to the attached portion 5, the elastic piece receiving portion 54 is provided inside the attached portion 5 so as to position the elastic piece 33. The backlash of the shield shell 3 can be reliably prevented without rattling on the mounting surface 51.

  In the present embodiment, the fixed piece 32 overlaps the attached portion 5 along the direction C orthogonal to the overlapping direction K. However, in the present invention, it is not always necessary to be orthogonal, as long as the direction intersects the overlapping direction K.

  Moreover, in this embodiment, the to-be-attached surface 51 was distribute | arranged to the perpendicular direction. However, in the present invention, the attached surface 51 may be arranged in any direction, for example, the attached surface 51 may be arranged in the horizontal direction. In this case, the overlapping direction K is a vertical direction, and the screw 6 is passed through the pair of holes 37 and 55 along the horizontal direction.

  In the present embodiment, the screw member is the screw 6. However, in the present invention, the screw member may be composed of, for example, a bolt and a nut.

  Next, a shield shell mounting structure 1 according to a second embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same component as 1st embodiment mentioned above, and description is abbreviate | omitted.

  As shown in FIG. 7, the shield shell 3 of the shield shell mounting structure 1 according to the second embodiment of the present invention is provided with a fixing piece 32 ′ protruding inward of the shell body 31. That is, the fixing piece 32 ′ is connected to the flange portion 36 and is provided so as to protrude in a direction away from the crimping portion 35 so that the angle formed with the flange portion 36 is an acute angle.

  When the shield shell 3 having the above-described configuration is attached to the attached portion 5, the flange portion 36 is overlaid on the attached surface 51 of the attached portion 5 and the fixed piece 32 ′ is overlaid on the fixed piece receiving surface 52. Since the fixed piece 32 ′ protrudes inward of the shell body 31, as shown in FIG. 8, when the flange portion 36 is overlapped with the attached surface 51, the fixed piece 32 ′ has a fixed piece receiving surface 52 at the tip side. And the base end side is overlaid on the fixed piece receiving surface 52 in an oblique state away from the fixed piece receiving surface 52.

  Then, when the screw 6 is screwed into the paired holes 37 and 55, as shown in FIG. 9, the base end side of the fixed piece 32 'approaches the fixed piece receiving surface 52, and the fixed piece 32' is horizontal. In this state, the flange portion 36 is strongly pressed against the attached surface 51 and the elastic piece 33 is strongly pressed against the bottom surface of the elastic piece receiving portion 54 to be elastically deformed and elastic restoring force. The bottom surface of the shield shell 3 is strongly pressed by the screw 6 and the shield shell 3 is attached to the attached portion 5 by the screw 6. That is, the shield shell 3 is more securely attached to the attached portion 5 as compared with the first embodiment.

  According to the present embodiment, in addition to the effects of the first embodiment described above, the fixing piece 32 ′ is provided so as to protrude inward of the shell main body 31. And the shell body 31 is strongly pressed against the attached portion 5, so that the shield shell 3 can be securely attached to the attached portion 5.

  In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, various modifications can be made without departing from the scope of the present invention.

1 Shield shell mounting structure 3 Shield shell 5 Mounted part 6 Screw (screw member)
21 Shield braiding (shield member)
31 Shell body 32 Fixed piece 32 'Fixed piece 33 Elastic piece 37 One hole 54 Elastic piece receiving part 55 Other hole K Overlapping direction C Overlapping direction

In order to solve the problems and achieve the object, the invention described in claim 1 includes a shield shell that is attached to an end of a shield member that covers an electric wire, and a mounted portion to which the shield shell is attached. In the shield shell mounting structure, the shield shell is provided so as to protrude from the shell body in a direction in which the shield shell is attached to the attached portion, and the shield shell is attached to the attached portion. And a fixing piece that is superimposed on the attached portion along a direction intersecting the direction in which the shell main body and the attached portion overlap, and provided to the fixed piece and the attached portion, A shield sheet comprising a pair of holes that communicate with each other when the fixing piece is overlaid on the attached portion and through which a screw member is passed. A mounting structure Le.

Claims (2)

In a shield shell mounting structure comprising: a shield shell attached to an end of a shield member that covers an electric wire; and a mounted portion to which the shield shell is attached;
When the shield shell is provided so as to protrude from the shell main body and the shell main body, and the shield shell is attached to the attached portion, the shell main body and the attached portion are along a direction intersecting with each other. And a fixing piece that is stacked on the attached portion,
A shield shell comprising a pair of holes provided in the fixed piece and the attached portion, and in communication with the screw piece when the fixed piece is overlapped with the attached portion. Mounting structure.   The shield shell mounting structure according to claim 1, wherein the fixing piece is provided so as to protrude inward of the shell main body.

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