JP2017126496A - Connection structure of braided conductor and shield shell, and electric wire with connector - Google Patents

Abstract

The present invention provides a connection structure of a braided conductor and a shield shell capable of sufficiently ensuring an effective electrical connection.
In a connection structure in which a braided conductor is connected to a shield shell by using a fastening member, an outer peripheral surface of a second cylindrical portion of the shield shell is folded back into a pair of folded portions. , 72b and a pair of extending portions 73a, 73b extending linearly between the end portions 72a1-72b2 of the folded portions 72a, 72b and connecting the end portions 72a1-72b2 to each other. The shield shell 70 includes a plurality of protrusions 713a to 713d that are provided on the folded portions 72a and 72b and spaced apart from each other along the circumferential direction of the second cylindrical portion 71. A part is interposed between the protrusions 713a to 713d.
[Selection] Figure 11

Description

  The present invention relates to a connection structure between a braided conductor and a shield shell, and an electric wire with a connector provided with the connection structure.

  As a connection structure between the braided conductor and the shield shell, the open end of the braided conductor is fitted to the ring of the shield shell, and the band is fitted to the outer periphery of the braided conductor. A connection structure that fixes a braided conductor to a shield shell by fastening the braided conductor between the shield shell and the shield shell is known (see, for example, Patent Document 1).

JP 2005-339933 A

  In the connection structure described above, the strands of the braided conductor are displaced toward the center of the ring by the band tightening force at the semicircular portions at both ends of the ring of the shield shell. On the other hand, the tightening force of the band is strongest at both ends of the ring of the shield shell. As described above, in the above connection structure, since the strand of the braided conductor escapes at the place where the tightening force of the band is the strongest, sufficient electrical connection between the braided conductor and the shield shell is sufficiently ensured. There is a problem that it may not be possible.

  The problem to be solved by the present invention is to provide a connection structure of a braided conductor and a shield shell capable of sufficiently ensuring an effective electrical connection, and an electric wire with a connector provided with the connection structure. is there.

  [1] The connection structure between the braided conductor and the shield shell according to the present invention includes the tubular braided conductor sandwiched between the cylindrical portion of the shield shell and the annular tightening member, and the tightening force of the tightening member A connection structure for connecting the braided conductor to the shield shell by pressing the braided conductor against the shield shell, wherein the outer peripheral surface of the cylindrical portion has a pair of folded portions folded back in a curved shape, and ends of the folded portions A cross-sectional shape including a pair of extending portions that extend linearly or arcuately between the portions and connect the end portions, and the shield shell is provided in at least one of the folded portions A connection between the braided conductor and the shield shell, wherein the braided conductor has a plurality of projections arranged at intervals along the circumferential direction of the cylindrical portion, and a part of the braided conductor is interposed between the projections It is a structure.

  [2] In the above invention, the protrusion may be provided on the folded portion so as to sandwich the apex of the folded portion.

  [3] In the above invention, the fastening member may be provided on an inner peripheral surface of the fastening member so as to correspond to the projection, and may have an opening capable of accommodating the projection.

  [4] In the above invention, the opening of the fastening member has a shape in which the length along the circumferential direction of the fastening member is relatively long with respect to the width along the axial direction of the fastening member. May be.

  [5] In the above invention, the tightening member may have a tightening force applying portion at a portion corresponding to one of the extending portions.

  [6] In the above invention, the cylindrical portion of the shield shell includes a groove provided on an outer peripheral surface of the cylindrical portion and extending along a circumferential direction of the cylindrical portion, and the protrusion is formed of the groove. It may be provided inside.

  [7] In the above invention, the braided conductor may collectively surround a plurality of electric wires, and a housing that holds an end portion of the electric wires may be accommodated in the cylindrical portion of the shield shell.

  [8] An electric wire with a connector according to the present invention has a connector including a plurality of electric wires, a tubular braided conductor that collectively surrounds the electric wires, and a connector to which the electric wire and the braided conductor are attached. The connector includes a plurality of terminals respectively connected to the ends of the electric wires, a housing that holds the terminals and the ends of the electric wires, and a shield shell having a cylindrical portion in which the housing is accommodated. An annular tightening member that connects the braided conductor to the tube portion, and the braided conductor is sandwiched between the tube portion and the tightening member, and by the tightening force of the tightening member It is connected to the shield shell by being pressed against the shield shell, and the outer peripheral surface of the cylindrical portion is linear or arcuate between a pair of folded portions that are folded in a curved shape and an end portion of the folded portion. To And having a cross-sectional shape including a pair of extending portions that connect the end portions, and the shield shell is provided in the folded portion, and is spaced along the circumferential direction of the cylindrical portion. The electric wire with a connector has a plurality of arranged protrusions, and a part of the braided conductor is interposed between the protrusions.

  According to the present invention, since a part of the braided conductor is interposed between the plurality of protrusions provided in the folded portion of the cylindrical portion of the shield shell, the strand of the braided conductor is formed by the tightening force of the tightening member. It is possible to prevent the shield shell from shifting from both ends of the cylindrical portion to the center side, and it is possible to sufficiently ensure an effective electrical connection between the braided conductor and the shield shell.

FIG. 1 is a perspective view showing an electric wire with a connector in an embodiment of the present invention. FIG. 2 is an exploded perspective view of the electric wire with connector shown in FIG. FIG. 3 is a view showing a bundled electric wire in the embodiment of the present invention, and is a cross-sectional view taken along line III-III in FIG. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. FIG. 5 is a cross-sectional view taken along line VV in FIG. FIG. 6 is a perspective view showing a shield shell in the embodiment of the present invention. FIG. 7 is a side view showing a shield shell in the embodiment of the present invention. FIG. 8 is an end view of a cut portion taken along line VIII-VIII in FIG. FIG. 9 is a diagram illustrating a first modification of the arrangement of the protrusions in the shield shell. FIG. 10 is a diagram illustrating a second modification of the arrangement of the protrusions in the shield shell. FIG. 11 is a side view showing a connection structure between a braided conductor and a shield shell in the embodiment of the present invention. 12 is an end view of the cut portion along the line XII-XII in FIG. FIG. 13 is a perspective view showing a fastening member before caulking in the embodiment of the present invention. FIG. 14A and FIG. 14B are enlarged front views showing convex portions before and after caulking of the tightening member, respectively.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 and 2 are a perspective view and an exploded perspective view of an electric wire with a connector in this embodiment, FIG. 3 is a cross-sectional view of a bundled electric wire in this embodiment, and FIGS. 4 and 5 are cross-sectional views of an electric wire with a connector in this embodiment. It is.

  As shown in FIGS. 1 and 2, the connector-attached electric wire 1 according to the present embodiment includes a bundled electric wire 10 formed by bundling a plurality of electric wires 15, a braided conductor 20 surrounding the bundled electric wire 10, And a connector 30 attached to the tip of the braided conductor 20. In the electric wire 1 with a connector, for example, the connector 30 is fitted into a mounting hole 111 (see FIGS. 4 and 5) of an auxiliary machine 110 of an automobile, and the terminal 40 is connected to a terminal block (not shown) of the auxiliary machine 110. Electrically connected. In addition, if the electric wire in this invention is a some electric wire enclosed by the cylindrical braided conductor, it does not need to be bundled especially.

  As shown in FIG. 1, in this embodiment, the direction in which the connector 30 is fitted to the auxiliary machine 110 is referred to as “front end side”, and the connector 30 fitted to the auxiliary machine 110 is separated from the auxiliary machine 110. The direction is referred to as “rear end side”.

  The bundled electric wire 10 includes a plurality (three in this embodiment) of electric wires 15 and is used as, for example, a power cable of an electric vehicle. The bundled electric wire 10 has a circular cross-sectional shape as a whole. The bundled electric wire 10 is formed by bundling and compressing the electric wires in a state where the covering layers of the three electric wires having a circular cross-sectional shape are heated and softened. For this reason, as shown in FIG. 3, each electric wire 15 which comprises the bundled electric wire 10 has a fan-shaped cross-sectional shape whose center angle is about 120 degrees. And the cross-sectional shape of the three electric wires 15 bundled mutually complements each other, and the circular cross-sectional shape of the bundle electric wire 10 is formed. In addition, in the front-end | tip part of the bundled electric wire 10, as shown in FIG.1 and FIG.2, the three electric wires 15 are mutually separated and independent.

  In FIG. 3, only one electric wire 15 of the three electric wires 15 is illustrated in detail, and the cross section of the other two electric wires 15 is only schematically illustrated. Moreover, the number of the electric wires 15 which comprise the bundled electric wire 10 is not specifically limited. Moreover, the manufacturing method of the bundled electric wire 10 is not particularly limited, and a bundled electric wire having a circular cross-sectional shape may be formed by preparing a plurality of electric wires having a fan-shaped cross-sectional shape and bundling the electric wires.

  Each electric wire 15 includes a central conductor 16 and a covering layer 17 as shown in FIG. The center conductor 16 is composed of a stranded wire formed by twisting a plurality of strands 161 together. The strand 161 is comprised from the metal material which has high electroconductivity, such as aluminum (Al), copper (Cu), or those alloys, for example. The covering layer 17 is made of a resin material having electrical insulation and covers the outer periphery of the central conductor 16. The covering layers 17 of the three electric wires 15 are integrated by heat fusion with each other by the softening and compression described above.

  The “fan-shaped cross-sectional shape” in the present embodiment is a shape surrounded by one arc portion and two radius portions, and the intersection of the linear radius portions is an arc shape, or the radius portion and the arc shape. Also included is a substantially sectoral cross-sectional shape in which the intersections of the parts are arcuate. The “circular cross-sectional shape” in the present embodiment includes not only a perfect circle but also an ellipse.

  The braided conductor 20 is formed by braiding a plurality of bundled wires 21 so as to cross each other (see FIG. 11). Each bundled wire 21 is composed of a plurality of strands 211 arranged in parallel. Each strand 211 is comprised from the metal material which has high electroconductivity, such as aluminum (Al), copper (Cu), or those alloys. The braided conductor 20 has a cylindrical shape with a cross-sectional shape corresponding to the second cylindrical portion 71 of the shield shell 70 described in detail later, and the bundled electric wire 10 is separated from the bundled electric wire 10 described above. Surrounds the surroundings.

  As shown in FIGS. 1 and 2, the connector 30 includes a plurality (three in this embodiment) of terminals 40 connected to the electric wire 20, a connector main body 50 that holds the terminals 40, an electric wire 15, and a connector main body. A plurality of (three in the present embodiment) wire seals 80 that seal the gap 50, a strain relief 85 that holds the electric wire 15 and is fixed to the connector body 50, and the braided conductor 20 is fixed to the connector body 50. A tightening member 90.

  Note that the number of terminals included in the connector 30 is not particularly limited to the above, and is set according to the number of the electric wires 15 attached to the connector 30. Similarly, the number of wire seals 80 included in the connector 30 is not particularly limited to the above, and is set according to the number of the electric wires 15 attached to the connector 30.

  Each terminal 40 is made of the same material as that of the above-described center conductor 16 and is formed by molding a single metal plate. As shown in FIGS. 4 and 5, the terminal 40 has a terminal connection portion 41 on the distal end side and an electric wire connection portion 42 on the rear end side.

  A connection hole 411 that penetrates the terminal connection portion 41 is formed at the tip of the terminal connection portion 41. The connection hole 411 is used for bolting the terminal 40 to a terminal block (not shown) of the auxiliary machine 110. Further, a locking hole 412 that penetrates the terminal connection portion 41 is formed in a portion of the terminal connection portion 41 on the rear end side of the connection hole 411. A lance 613 (described later) of the connector main body 50 is locked in the locking hole 412.

  At the tip end portion of the electric wire 15 described above, the covering layer 17 is peeled off and the central conductor 16 is exposed. The exposed central conductor 16 is joined to the wire connecting portion 42 of the terminal 40 by ultrasonic welding or resistance welding.

  The connector main body 50 includes a housing 60 and a shield shell 70. The housing 60 is made of a material having electrical insulation equivalent to a resin material. On the other hand, the shield shell 70 is made of a metal material having high conductivity such as aluminum (Al), copper (Cu), or an alloy thereof.

  The housing 60 includes a plurality (three in the present embodiment) of first cylindrical portions 61 and first flange portions 62. The plurality of first tube portions 61 are connected to each other in a state of being arranged in parallel (see FIG. 2). The first flange portion 62 is provided at the tip of the first tube portion 61 and protrudes toward the radially outer side of the first tube portion 61.

  As shown in FIGS. 4 and 5, the first cylindrical portion 61 is formed with first housing holes 611 that penetrate the housing 60 from the front end toward the rear end. The first accommodation hole 611 accommodates the tip end portion of the electric wire 15 and the terminal 40 to which the electric wire 15 is joined. The distal end portion of the terminal connection portion 41 of the terminal 40 protrudes from the opening 611 on the distal end side of the first accommodation hole 61, and the connection hole 411 of the terminal connection portion 41 is located outside the housing 60. Each first accommodation hole 611 is provided with a lance 613 that can be elastically deformed. The lance 613 is locked in the locking hole 412 of the terminal 40, so that the terminal 40 is fixed to the housing 60.

  The wire seal 80 is an annular seal material made of a flexible resin material such as silicone rubber or fluorine rubber. The wire seal 80 has an insertion hole 81 into which the electric wire 15 is inserted. In this embodiment, the insertion hole 81 has a fan-shaped cross-sectional shape corresponding to the cross-sectional shape of the electric wire 15. . The wire seal 80 is press-fitted into the first receiving hole 611 of the housing 60 through the opening 614 on the rear end side in a state where the electric wire 15 is inserted into the insertion hole 81. 15 and the housing 60 are sealed.

  The strain relief 85 is made of a resin material having a Young's modulus relatively higher than that of the material constituting the wire seal 80. Specific examples of the material constituting the strain relief 85 include polybutylene terephthalate (PBT) and polyamide (PA). In the strain relief 85, three insertion holes 86 are formed in parallel so as to correspond to the three first cylindrical portions 61 of the housing 60 (see FIG. 2). Each insertion hole 86 also has a sector cross-sectional shape corresponding to the cross-sectional shape of the electric wire 15.

  As shown in FIG. 4, a plurality of protrusions 616 that protrude toward the outside of the housing 60 are provided on the outer peripheral surface 615 of the rear end portion of the first cylindrical portion 61 of the housing 60. On the other hand, a plurality of slits 87 are formed in the strain relief 85 so as to correspond to the protrusions 616. The strain relief 85 is fixed to the rear end portion of the housing 60 by the protrusion 616 engaging with the slit 87 in a state where the electric wire 15 is inserted into the insertion hole 86.

  The strain relief 85 holds the electric wire 15 and corrects the posture of the electric wire 15 with respect to the housing 60, so that the electric wire 15 is inserted into the housing 60 in an inclined state (so-called electric wire 15 twisting). Is suppressed from occurring. The three electric wires 15 extend rearward from the opening 614 of the housing 60 via the strain relief 85, and are surrounded by the braided conductor 20 having an end connected to the shield shell 70.

  6 and 7 are a perspective view and a side view of the shield shell in the present embodiment, FIG. 8 is an end view of the cut portion along the line VIII-VIII in FIG. 7, and FIGS. The figure which shows the 1st and 2nd modification of this, FIG. 11 is a side view which shows the connection structure of the braided conductor and shield shell in this embodiment, FIG. 12 is the end elevation of the cut part along the XII-XII line of FIG. FIG. 13 is a perspective view showing a tightening member before caulking in the present embodiment, and FIGS. 14A and 14B are enlarged front views showing convex portions before and after caulking of the tightening member. .

  As shown in FIGS. 6 and 7, the shield shell 70 includes a second cylindrical portion 71 and a second flange portion 75. The 2nd cylinder part 71 of the shield shell 70 in this embodiment is equivalent to an example of the cylinder part of the shield shell in this invention.

  The second cylindrical portion 71 has a second accommodation hole 711 penetrating from the front end to the rear end of the shield shell 70, and the second accommodation hole 711 has a first housing 60 described above. The cylindrical portion 61 is accommodated. The braided conductor 20 is connected to the rear end portion of the second cylindrical portion 71 by a fastening member 90.

  The second flange portion 75 is provided at the tip of the second cylindrical portion 71 and protrudes toward the radially outer side of the second cylindrical portion 71. A concave portion 751 is formed on the surface of the second flange portion 75 on the front end side. When the first tube portion 61 is inserted into the second tube portion 71, the first flange portion 62 is It fits into the recess 751 (see FIGS. 2, 4 and 5). The second flange portion 75 has a mounting hole 752 formed therein. The shield 30 is fastened to the auxiliary machine 110 by the bolt inserted into the mounting hole 752, whereby the connector 30 is fixed to the auxiliary machine 110.

As shown in FIG. 8, the outer peripheral surface 712 of the second cylindrical portion 71 in the present embodiment is an oval shape composed of a pair of folded portions 72 a and 72 b and a pair of extending portions 73 a and 73 b. It has a cross-sectional shape. In the oval-shaped cross section, the horizontal direction in the figure the length L ₁ along the (extended portion 73a, the extending direction of 73b), the longitudinal direction (extending portion 73a, 73b extending in in FIG. It is larger with respect to the height H ₁ along the direction substantially perpendicular to the direction (L ₁ > H ₁ ). In addition, this cross-sectional shape is a cross-sectional shape when the second cylindrical portion 71 is cut along a direction substantially orthogonal to the axial direction of the second cylindrical portion 71.

  The folded portions 72a and 72b are each formed from a circular arc shape that is bent in a semicircular shape and is turned substantially 180 °. On the other hand, the extending portions 73a and 73b are each formed from a substantially linear shape. Specifically, the 1st extension part 73a has connected one edge part 72a1 of the 1st folding | turning part 72a, and one edge part 72b1 of the 2nd folding | turning part 72b. On the other hand, the second extending portion 73b connects the other end 72a2 of the first folded portion 72a and the other end 72b2 of the second folded portion 72b.

  In addition, the shape of the extension parts 73a and 73b is not specifically limited to the above linear shape, For example, even if it is circular arc shape which protrudes convexly toward the radial direction outer side of the 2nd cylinder part 71, for example. Good. In addition, this arc-shaped extension part has a relatively small curvature with respect to the curvature of the curved part of the folded part, that is, the arc-shaped extended part has a curved radius of curvature of the folded part. Has a relatively large radius of curvature. Therefore, in this case, the outer peripheral surface 712 of the second cylindrical portion 71 has an elliptical (eclipsed) shape, a saddle shape, or an egg-shaped cross-sectional shape as a whole.

  In this embodiment, as shown in FIGS. 6 to 8, a plurality (four in this embodiment) of protrusions 713 a to 713 d and an annular shape are formed on the outer peripheral surface 712 of the rear end portion of the second cylindrical portion 71. A groove 714 is formed. The groove 714 may not be formed on the outer peripheral surface 712 of the second cylindrical portion 71.

  The plurality of protrusions 713 a to 713 d are provided so as to protrude outward in the radial direction of the second cylindrical portion 71. The pair of protrusions 713 a and 713 b are provided on one folded portion 72 a of the second cylindrical portion 71 so as to be spaced along the circumferential direction of the second cylindrical portion 71. Similarly, the other pair of protrusions 713 c and 713 d are also provided on the other folded portion 72 b of the second cylindrical portion 71 so as to be spaced along the circumferential direction of the second cylindrical portion 71.

  In particular, in the present embodiment, as shown in FIG. 8, the pair of protrusions 713a and 713b are arranged so as to sandwich a vertex 72a3 located at an intermediate point of one folded portion 72a. Similarly, the other pair of protrusions 713c and 713d are also arranged so as to sandwich the vertex 72b3 of the other folded portion 72b.

  Although not particularly illustrated, the projections 713a and 713b may be provided only on one folded portion 72a, and the projections 713c and 713d may not be disposed on the other folded portion 72b. Alternatively, the projections 713c and 713d may be provided only on the other folded portion 72b without providing the projections 713a and 713b on one folded portion 72a.

  Further, the number and arrangement of the protrusions are not particularly limited as long as all the protrusions are provided in the folded portion. For example, as shown in FIG. 9, three projections 713e to 713g may be provided for one folded portion 72a, and one of the projections 713f may be located at a vertex 72a3 of the folded portion 72a. Alternatively, as shown in FIG. 10, when two projections 713h and 713i are provided for one folding portion 72a, both projections 731h and 713i may be arranged on one side of the vertex 72a3 of the folding portion 72a1. .

  The groove 714 is formed in an annular shape along the circumferential direction of the second cylindrical portion 71 on the outer peripheral surface 712 of the rear end portion of the second cylindrical portion 71. The protrusions 713 a to 713 d described above are provided in a region where the groove 714 is formed on the outer peripheral surface 712 of the second cylindrical portion 71, and are included in the groove 714.

  The rear end portion of the second cylindrical portion 71 is inserted into the end portion of the tubular braided conductor 20. At this time, as shown in FIGS. 11 and 12, the bundled wire 21 of the braided conductor 20 is interposed between the pair of protrusions 713a and 713b and between the pair of protrusions 713c and 713d (not shown). The end portion of the braided conductor 20 is put on the outer peripheral surface 712 of the second cylindrical portion 71.

Further, the end portion of the braided conductor 20 is fixed to the rear end portion of the second cylindrical portion 71 by caulking the fastening member 90. The fastening member 90 is made of, for example, a metal material different from the material constituting the shield shell 70, and specifically made of stainless steel, iron, or the like. The fastening member 90 has an annular shape corresponding to the second cylindrical portion 71 of the shield shell 70. The tightening member 90 has a relatively small width W ₂ (see FIG. 13) relative to the width W ₁ (see FIG. 7) of the groove 714 formed in the second cylindrical portion 71 (W _{2 <W} 1). Such a groove 714 makes it possible to easily position the fastening member 90 with respect to the second cylindrical portion 71.

  The shape of the tightening member 90 is not particularly limited as long as it is an annular shape in a state where the braided conductor 20 and the shield shell 70 are connected. For example, although not particularly illustrated, the fastening member may be formed of a band-shaped member having a protrusion at one end and an opening at the other end. In this case, after the fastening member is wound around the outer periphery of the braided conductor 20 and the shield shell 70, the fastening member has an annular shape by engaging the protrusion with the opening.

  FIG. 13 shows the fastening member 90 before crimping. The tightening member 90 is formed with a plurality (four in this embodiment) of through holes 91a to 91d and a convex portion 92 protruding in a rectangular shape. The first and second through holes 91 a and 91 b are provided so as to correspond to the first folded portion 72 a of the second cylindrical portion 71. On the other hand, the third and fourth through holes 91 c and 91 d are provided so as to correspond to the second folded portion 72 b of the second cylindrical portion 71. The 1st-4th through-holes 91a-91d of the fastening member 90 in this embodiment are equivalent to an example of the opening provided in the inner surface of the fastening member in this invention. The through holes 91 a to 91 d may not be formed in the tightening member 90.

The first through hole 91a is disposed so as to correspond to the first protrusion 713a, and can accommodate the first protrusion 713a. Specifically, the first through hole 91a is relatively long with respect to the width W ₃ of the circumferential length along the direction L ₃ along the axial direction of with the fastening member 90 of the clamping member 90 It has an oval shape (L ₃ > W ₃ ). The second through hole 91b is also arranged so as to correspond to the second protrusion 713b, and has an oval shape that can accommodate the first protrusion 713a.

  Similarly, the third through hole 91c is also arranged so as to correspond to the third protrusion 713c, and has an oval shape that can accommodate the third protrusion 713c. The fourth through hole 91d is also disposed so as to correspond to the fourth protrusion 713d, and has an oval shape that can accommodate the fourth protrusion 713d.

  Thus, in this embodiment, any of the through holes 91a to 91d has an oval shape that is relatively large with respect to the protrusions 713a to 713d. Thereby, it is allowed to reduce the diameter of the fastening member 90 by caulking in a state where the protrusions 713a to 713d are inserted into the through holes 91a to 91d, respectively.

  The tightening member 90 only needs to have an opening provided on the inner peripheral surface 93 so as to correspond to the protrusions 713a to 713d. For example, although not particularly illustrated, in place of the above-described through holes 91a to 91d, the inner peripheral surface 93 of the fastening member 90 may have recesses provided so as to correspond to the protrusions 713a to 713d. In addition, this dent also has an oval shape that can accommodate a projection, like the above-described through holes 91a to 91d. In this case, this dent corresponds to an example of an opening provided on the inner surface of the fastening member in the present invention.

  The convex portion 92 is provided at a portion corresponding to the one extending portion 73 a of the second cylindrical portion 71 in the fastening member 90. As shown in FIGS. 14 (a) and 14 (b), the tightening member 90 is reduced in diameter by caulking the projecting portion 92, and a tightening force is applied to the tightening member 90. The end portion of the conductor 20 is fixed to the second cylindrical portion 71 of the shield shell 70. In addition, the convex part 92 in this embodiment is corresponded to an example of the clamping force provision part in this invention.

  Specifically, first, in a state where the braided conductor 20 is inserted into the fastening member 90, the second cylindrical portion 71 of the shield shell 70 is inserted into the end of the braided conductor 20. At this time, as described above, the end of the braided conductor 20 is arranged so that the bundle wire 21 of the braided conductor 20 is interposed between the pair of protrusions 713a and 713b and between the pair of protrusions 713c and 713d. The outer peripheral surface 712 of the second cylindrical portion 71 is covered (see FIG. 11).

  Next, the tightening member 90 is slid on the braided conductor 20 so that the tightening member 90 is opposed to the groove 714 of the second cylindrical portion 71 via the braided conductor 20.

  Next, as shown in FIGS. 14 (a) and 14 (b), using a tool (not shown), the root portions 921 of the protrusions 92 are brought close to each other, thereby crimping the protrusions 92. The diameter of the fastening member 90 is reduced. By the tightening force of the tightening member 90, the end of the braided conductor 20 is pressed and fixed to the second cylindrical portion 71 of the shield shell 70, and the connection between the braided conductor 20 and the shield shell 70 as shown in FIG. A structure 100 is formed. In FIG. 11, the fastening member 90 is indicated by a one-dot chain line in order to make it easy to see the positional relationship between the protrusions 713 a and 713 b and the bundled wire 21 of the braided conductor 20.

  In the connection structure 100 formed as described above, a plurality of protrusions 713 a to 713 d are provided on the folded portions 72 a and 72 b of the second cylindrical portion 71 of the shield shell 70. Then, as shown in FIG. 12, the bundled wire 21 of the braided conductor 20 is sandwiched between the pair of protrusions 713a and 713b, and between the fastening member 90 and the outer peripheral surface 712 of the second cylindrical portion 71. Sandwiched. Similarly, although not particularly illustrated, the bundled wire 21 of the braided conductor 20 is sandwiched between the pair of protrusions 713c and 713d and sandwiched between the fastening member 90 and the outer peripheral surface 712 of the second cylindrical portion 71. It is.

  For this reason, it is possible to prevent the bundled wire 21 of the braided conductor 20 from being displaced from the folded portions 72 a and 72 b of the shield shell 70 toward the center due to the tightening force of the tightening member 90. That is, it is possible to prevent the bundle wire 21 of the braided conductor 20 from escaping at the locations 72 a and 72 b where the tightening force of the tightening member 90 is strongest, and effective electrical connection between the braided conductor 20 and the shield shell 70. Sufficient connection can be ensured.

  In the present embodiment, the pair of protrusions 713a and 713b are disposed so as to sandwich the vertex 72a3 of the folded portion 72a, and the other pair of protrusions 713c and 713 are disposed so as to sandwich the vertex 72b1 of the folded portion 72b. Has been. For this reason, it is possible to reliably prevent the bundled wire 21 of the braided conductor 20 from being displaced from the folded portions 72 a and 72 b of the shield shell 70 due to the tightening force of the tightening member 90.

  Furthermore, in this embodiment, since the convex part 92 is provided in the part corresponding to one extension part 73a of the 2nd cylinder part 71 in the fastening member 90, the 2nd cylinder part of the shield shell 70 is provided. The fastening force of the fastening member 90 can be effectively applied to the folded portions 72a and 72b located at both ends of 71.

  The embodiment described above is described for facilitating the understanding of the present invention, and is not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

  For example, in the above-described embodiment, the convex portion 92 is applied to the tightening member 90 by caulking, but the means for applying a tightening force to the tightening member is not particularly limited thereto. For example, instead of the convex portion 92, a tightening force may be applied to the tightening member as the bolt and the nut are tightened. In this case, the bolt and nut correspond to an example of the tightening force applying portion in the present invention.

DESCRIPTION OF SYMBOLS 1 ... Electric wire with a connector 10 ... Bundled wire 15 ... Electric wire 16 ... Center conductor 161 ... Elementary wire 17 ... Covering layer 20 ... Braided conductor 21 ... Bundled wire 22 ... Elementary wire 30 ... Connector 40 ... Terminal 41 ... Terminal connection part 411 ... Connection Hole 412 ... Locking hole 42 ... Electric wire connection part 50 ... Connector main body 60 ... Housing 61 ... First cylinder part
611 ... 1st accommodation hole
612 ... opening on the tip side
613 ... Lance
614 ... opening on the rear end side
615 ... outer peripheral surface
616 ... Projection 62 ... First flange portion 70 ... Shield shell 71 ... Second tube portion
711 ... Second accommodation hole
712 ... outer peripheral surface
713a-713d, 713e-713g, 713h-713i ... projection
714 ... groove
72a, 72b ... turn-up part
72a1, 72a2, 72b1, 72b2 ... end
72a3, 72b3 ... vertex
73a, 73b ... extended portion 75 ... second flange portion
751 ... concave portion
752 ... Mounting hole 80 ... Wire seal 81 ... Insertion hole 85 ... Strain relief 86 ... Insertion hole 87 ... Slit 90 ... Tightening members 91a to 91d ... Insertion hole 92 ... Protrusion 921 ... Root portion 93 ... Inner peripheral surface 100 ... Connection Structure 110 ... Auxiliary machine 111 ... Mounting hole

Claims (8)

A cylindrical braided conductor is sandwiched between the cylindrical portion of the shield shell and the annular fastening member, and the braided conductor is pressed against the shield shell by the fastening force of the fastening member, whereby the braided conductor is shielded from the shield. A connection structure for connecting to a shell,
The outer peripheral surface of the cylindrical portion is
A pair of folded portions folded back in a curved shape;
A cross-sectional shape including a pair of extending portions extending linearly or arcuately between the end portions of the folded portion and connecting the end portions;
The shield shell is provided in at least one of the folded portions, and has a plurality of protrusions arranged at intervals along the circumferential direction of the cylindrical portion,
A connection structure between a braided conductor and a shield shell, wherein a part of the braided conductor is interposed between the protrusions. A connection structure between a braided conductor and a shield shell according to claim 1,
The projection is a connection structure of a braided conductor and a shield shell, which is provided in the folded portion so as to sandwich the apex of the folded portion. A connection structure between a braided conductor and a shield shell according to claim 1 or 2,
The connection structure of a braided conductor and a shield shell, wherein the tightening member is provided on an inner peripheral surface of the tightening member so as to correspond to the protrusion, and has an opening capable of accommodating the protrusion. A connection structure between a braided conductor and a shield shell according to claim 3,
The opening of the tightening member has a shape in which a length along the circumferential direction of the tightening member is relatively long with respect to a width along the axial direction of the tightening member. Connection structure. A connection structure between a braided conductor and a shield shell according to any one of claims 1 to 4,
The connection structure of a braided conductor and a shield shell, wherein the tightening member has a tightening force applying portion at a portion corresponding to one of the extending portions. A connection structure between a braided conductor and a shield shell according to any one of claims 1 to 5,
The cylindrical portion of the shield shell is provided on the outer peripheral surface of the cylindrical portion, and has a groove extending along the circumferential direction of the cylindrical portion,
The projection is a connection structure of a braided conductor and a shield shell provided in the groove. A connection structure between a braided conductor and a shield shell according to any one of claims 1 to 6,
The braided conductor collectively surrounds a plurality of electric wires,
The housing for holding the end portion of the electric wire is a connection structure between the braided conductor and the shield shell, which is accommodated in the cylindrical portion of the shield shell. Multiple wires,
A cylindrical braided conductor that collectively surrounds the wires;
A connector-attached electric wire comprising a connector to which the electric wire and the braided conductor are attached,
The connector is
A plurality of terminals respectively connected to the ends of the wires;
A housing for holding the terminal and the end of the electric wire;
A shield shell having a cylindrical portion in which the housing is accommodated;
An annular fastening member that connects the braided conductor to the cylindrical portion,
The braided conductor is sandwiched between the tubular portion and the fastening member, and is pressed against the shield shell by the fastening force of the fastening member, thereby being connected to the shield shell,
The outer peripheral surface of the cylindrical portion is
A pair of folded portions folded back in a curved shape;
A cross-sectional shape including a pair of extending portions extending linearly or arcuately between the end portions of the folded portion and connecting the end portions;
The shield shell has a plurality of protrusions provided at the folded portion and arranged at intervals along the circumferential direction of the cylindrical portion,
An electric wire with a connector, wherein a part of the braided conductor is interposed between the protrusions.

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