JP2017157285A - Connecting structure of braided conductor and shield shell, wire with connector, and connecting method for braided conductor and shield shell - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connecting structure of a braided conductor and a shield shell to improve assembling workability for a wire with connector.SOLUTION: In a connecting structure 100 to connect a braided conductor 20 in a cylindrical shape to a cylindrical portion 71 of a shield shell 70 using an annular member 90, the cylindrical portion includes a pair of curved portions 72a, 72b folded back in a curved shape; a pair of extending portions 73a, 73b extending in a linear shape between the curved portions; and a plurality of slits 74a-74d existing between the curved portions and the extending portions. The annular member is placed outside the cylindrical portion at the curved portions, passing through an inside of a slit, and fixed on the cylindrical portion so as to be placed inside the cylindrical portion at the extending portion. The annular member is held from an inside by the curved portion and, at the same time, held from an outside by the extending portion so as to be fixed on the cylindrical portion. The braided conductor is placed between the annular member and the cylindrical portion at least at the curved portion.SELECTED DRAWING: Figure 10

Description

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

  As a connection structure between the braided shield and the shield shell, a structure is known in which the braided shield is pressed against the shield shell by the tightening force of the tightening member with the braided shield sandwiched between the outer surface of the shield shell and the tightening member. (For example, refer to Patent Document 1).

JP 2013-243077 A

  In the above connection structure, since a tightening force is generated by caulking the tightening member, an Ω-shaped caulking portion protruding outward is formed on the tightening member. For this reason, when assembling the electric wire with a connector, the caulking portion becomes an obstacle, and there is a problem that the workability of the assembling work of the electric wire with a connector is deteriorated.

  The problem to be solved by the present invention is to provide a connection structure and method of a braided conductor and a shield shell, and an electric wire with a connector provided with the connection structure, which can improve the assembly workability of the electric wire with a connector. That is.

  [1] A connection structure between a braided conductor and a shield shell according to the present invention is a connection structure in which a tubular braided conductor is connected to a cylindrical portion of a shield shell using an annular member, and the cylindrical portion is curved. Including a pair of bent portions to be folded, a pair of extending portions extending linearly or arcuately between the bending portions, and a plurality of slits interposed between the bending portions and the extending portions. The annular member is located on the outer side of the cylindrical portion at the curved portion, passes through the slit, and is attached to the cylindrical portion so as to be positioned on the inner side of the cylindrical portion at the extending portion, The annular member is held from the inside by the curved portion and held from the outside by the extending portion, and is fixed to the cylindrical portion, and the braided conductor is at least the curved portion at the annular member And a braided conductor sandwiched between the cylindrical portions It is a connection structure of the shield shell.

  [2] In the above invention, at least a part of the extending part may be located on an imaginary straight line connecting ends of the bending part.

  [3] In the above invention, the braided conductor may be located inside the annular member over the entire circumference of the braided conductor.

  [4] In the above invention, the braided conductor has a folded portion located outside the annular member, with a tip portion of the braided conductor being folded, and the folded portion is the extended portion. You may be pinched | interposed between the cylinder part and the said annular member.

  [5] In the above invention, the cylindrical portion includes a support portion that supports the bending portion and the extending portion, a first step portion formed between the support portion and the bending portion, and the support portion. And a second stepped portion formed between the extending portions.

  [6] An electric wire with a connector according to the present invention includes 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 is a plurality of terminals connected to the ends of the wires; a housing that holds the terminals and ends of the wires; and a shield shell having a cylindrical portion in which the housing is housed; An annular member fixed to the cylindrical portion, and the cylindrical portion includes a pair of curved portions that are folded back in a curved shape, and a pair of extending portions that extend linearly or arcuately between the curved portions. A plurality of slits interposed between the curved portion and the extending portion, and the annular member is located outside the cylindrical portion at the curved portion, passes through the slit, It is located inside the cylinder part at the extension part As described above, the annular member is fixed to the cylindrical portion by being held from the inside by the curved portion and held from the outside by the extending portion, and the braided conductor is The electric wire with a connector, which is sandwiched between the annular member and the cylindrical portion at least by the curved portion.

  [7] A connecting method of a braided conductor and a shield shell according to the present invention is a connecting method of connecting a tubular braided conductor to a cylindrical portion of a shield shell using an annular member, and the annular member and the braided conductor are connected to each other. A first step of attaching to the cylindrical portion; and a second step of deforming the cylindrical portion, wherein the cylindrical portion is linearly or between a pair of curved portions that are folded back into a curved shape, or between the curved portions. A pair of extending portions extending in an arc shape, and a plurality of slits interposed between the bending portion and the extending portion, and the first step includes the step of the annular member at the bending portion. It is located outside the tubular part, passes through the slit, is located inside the tubular part by the extending part, and the braided conductor is at least the curved part between the annular member and the tubular part The annular member and the braided conductor in front of The second step includes attaching the cylindrical member to the inner side of the cylindrical part by pressing the extended part toward the inner side of the cylindrical part, and holding the annular member from the inner side by the curved part. A method of connecting the braided conductor and the shield shell, including holding the annular member from the outside.

  [8] In the above invention, the extending portion before the second step is located outside a virtual straight line connecting ends of the curved portions, and the second step includes: You may include pressing the said extension part toward the inner side of the said cylinder part so that at least one part of the said extension part may be located on the said virtual straight line.

  In the present invention, the annular member is attached to the cylindrical portion so that the annular member is positioned outside the cylindrical portion at the curved portion, passes through the slit, and is positioned inside the cylindrical portion at the extending portion. The curved portion is held from the inside and held from the outside by the extending portion, so that it is fixed to the cylindrical portion, and the braided conductor is sandwiched between the annular member and the cylindrical portion at least by the curved portion. . Thereby, since the part which protrudes outside is not formed in an annular member, the assembly workability | operativity of the electric wire with a connector improves.

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 the shield shell after deformation in the embodiment of the present invention. 7 is a cross-sectional view taken along line VII-VII in FIG. FIG. 8 is a perspective view showing the shield shell before deformation in the embodiment of the present invention. 9 is a cross-sectional view taken along line IX-IX in FIG. FIG. 10 is a perspective view showing a connection structure between the braided conductor and the shield shell in the embodiment of the present invention. 11 is a cross-sectional view taken along line XI-XI in FIG. FIG. 12 is a perspective view showing an annular member before deformation in the embodiment of the present invention. FIG. 13 is a process diagram showing a method for connecting a braided conductor and a shield shell in the embodiment of the present invention. FIG. 14A and FIG. 14B are diagrams showing step S20 of FIG. FIG. 15A and FIG. 15B are diagrams showing step S40 of FIG.

  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 cross-sectional shape of the electric wire 15 which comprises the bundled electric wire 10 is not specifically limited, either, For example, the cross-sectional shape of the electric wire 15 after being bundled may be circular. Furthermore, the manufacturing method of the bundled electric wire 10 is not particularly limited. For example, a plurality of electric wires having a fan-shaped cross-sectional shape may be prepared, and the bundled electric wires may be bundled to form a bundled electric wire having a circular cross-sectional shape. . Alternatively, a bundled electric wire may be configured by an assembly of electric wires having a circular cross-sectional shape by preparing a plurality of electric wires having a circular cross-sectional shape and simply 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.

  Although not particularly shown, the braided conductor 20 is formed by weaving so that a plurality of thin wires intersect each other. Each thin wire is made of a metal material having high conductivity such as aluminum (Al), copper (Cu), or an alloy thereof. The braided conductor 20 has a cylindrical shape, and surrounds the bundled wire 10 in a state of being separated from the bundled wire 10 described above.

  The braided conductor 20 is inserted into an annular member 90 described later, and is located inside the annular member 90 over the entire circumference of the braided conductor 20. Further, the leading end portion of the braided conductor 20 protrudes from the annular member 90 and is folded back to the outside of the annular member 90, and the folded portion 21 covers the outer periphery of the annular member 90 over the entire circumference (FIG. 14). (See (a) and FIG. 14 (b)).

  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 this 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 main body 50, and the braided conductor 20 is fixed to the connector main body 50. An annular member 90.

  Note that the number of terminals 40 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 central conductor 16 of the above-described electric wire 15 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 an electrically insulating material such as a resin material. On the other hand, the shield shell 70 is formed by squeezing a steel plate such as SPCC or SECC, for example. Note that the surface of the shield shell 70 after the squeezing process may be plated.

  The housing 60 includes a plurality of (three in the present embodiment) first tube portions 61 and a first flange 62. The plurality of first tube portions 61 are arranged in parallel. Are connected to each other (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 a first accommodation hole 611 that penetrates the housing 60 from the front end to the rear end of the housing 60. 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 612 on the distal end side of the first accommodation hole 61, and the terminal connection hole 411 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 arranged in parallel so as to correspond to the three first cylindrical portions 61 of the housing 60 (see FIG. 2). The insertion hole 86 also has a fan-shaped 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 twisting). It is restrained to do. 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 cross-sectional view showing the shield shell after deformation in the present embodiment, and FIGS. 8 and 9 are a perspective view and a cross-sectional view showing the shield shell before deformation in the present embodiment. 10 and 11 are a perspective view and a cross-sectional view showing a connection structure between a braided conductor and a shield shell in the present embodiment, and FIG. 12 is a perspective view showing an annular member before deformation in the present embodiment.

  Although the braided conductor 20 and the annular member 90 are fixed to the shield shell 70 after deformation, in order to facilitate understanding of the structure of the shield shell 70, in FIG. 6 and FIG. Illustration of the member 90 is omitted.

  As shown in FIGS. 6 and 7, the shield shell 70 includes a second cylindrical portion 71 and a second flange portion 78. 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 that penetrates from the front end to the rear end of the shield shell 70. In the second accommodation hole 711, the first cylindrical portion 61 of the housing 60 described above is accommodated, and the braided conductor 20 is connected to the rear end portion of the second cylindrical portion 71 by an annular member 90. (See FIG. 4 and FIG. 5).

  As shown in FIGS. 6 and 7, the second cylindrical portion 71 in the present embodiment includes a pair of curved portions 72 a and 72 b, a pair of extending portions 73 a and 73 b, and a support portion 75. .

As shown in FIG. 7, the curved portions 72a and 72b and the extending portions 73a and 73b are arranged on the same circumference and form a cylindrical shape having an oval cross-sectional shape. This oval cross-sectional shape, the lateral direction length L ₁ along the (extended portion 73a, the extending direction of 73b), the longitudinal direction (extending portion 73a, the extending direction of 73b in the figures of the drawing Relative to the height H ₁ along the direction substantially orthogonal to (L ₁ > H ₁ ).

  Specifically, the bending portions 72a and 72b are each formed from an arc shape that is bent in a semicircular shape and is substantially turned back by 180 °. On the other hand, the extending portions 73a and 73b are each configured from a substantially linear shape.

Then, one of the extending portion 73a is to be located on the curved portion 72a, the end portion _72a 1 of 72b, 72b ₁ virtual straight line VL ₁ connecting the (upper end in the drawing) between a pair curved It arrange | positions between the parts 72a and 72b. At this time, in the present embodiment, the extending portion 73a is disposed away from the end portions 72a ₁ and 72b ₁ of the bending portions 72a and 72b, and the slit 74a is provided between the extending portion 73a and the bending portions 72a and 72b. 74b are formed. These slits 74 a and 74 b extend linearly along the axial direction of the second cylindrical portion 71.

Similarly, the other extending part 73b, so as to be positioned on the curved portion 72a, 72b end portion _72a 2 of, 72b ₂ virtual straight line VL ₂ which connects the (lower end in the drawing) to each other, a pair Between the curved portions 72a and 72b. At this time, in the present embodiment, the extending portion 73a is disposed away from the end portions 72a ₂ and 72b ₂ of the curved portions 72a and 72b, and the slit 74c is provided between the extending portion 73a and the curved portions 72a and 72b. , 74d are formed. These slits 74 c and 74 d also extend linearly along the axial direction of the second cylindrical portion 71.

In addition, the shape of the extension parts 73a and 73b is not limited to the above linear shape, For example, the circular arc shape which protrudes convexly toward the radial direction outer side of the 2nd cylinder part 71 may be sufficient. . The arc-shaped extension has a relatively small curvature with respect to the curvature of the curved portion, that is, the arc-shaped extension has a relatively large curvature with respect to the curvature radius of the curved portion. Has a radius. Therefore, in this case, the curved portion and the extending portion form an elliptical (eclipsed), saddle-shaped, or egg-shaped cross-sectional shape. In this case, the extending portion 73a, a portion of 73b (e.g., extending portion 73a, both ends of 73b) is positioned on the virtual straight line VL _1.

  The support portion 75 supports the curved portions 72a and 72b via the first step portions 76a and 76b, and supports the extending portions 73a and 73b via the second step portions 77a and 77b. . The support portion 75 has a cylindrical shape with a cross-sectional shape corresponding to the oval cross-sectional shape formed by the curved portions 72a and 72b and the extending portions 73a and 73b.

  The curved portions 72a and 72b are located inside the support portion 75 by the first step portions 76a and 76b, and the extending portions 73a and 73b are also located inside the support portion 75 by the second step portions 77a and 77b. Is located. For this reason, the cross-sectional shape formed by the curved portions 72 a and 72 b and the extending portions 73 a and 73 b is relatively smaller than the cross-sectional shape of the support portion 75. When the first tube portion 61 of the housing 60 is inserted into the second tube portion 71, the first flange portion 62 of the housing 60 is inserted into the support portion 75 (see FIGS. 2, 4 and 4). (See FIG. 5).

As shown in FIGS. 8 and 9, in the shield shell 70 before the braided conductor 20 is connected (before deformation), the extending portions 73 a and 73 _b are outside the above-described virtual straight lines VL ₁ and VL _2. In addition, the portions between the extending portions 73 a and 73 b and the support portion 75 are flat, and the second stepped portions 77 a and 77 b are not formed in the second cylindrical portion 71. That is, the extending portions 73a and 73b are different from the curved portions 72a and 72b.

  The second flange portion 78 is provided at the tip of the support portion 75 and protrudes outward in the radial direction of the support portion 75. An attachment hole 781 is formed in the second flange portion 78. The shield 30 is fastened to the auxiliary machine 110 by the bolt inserted into the mounting hole 781, whereby the connector 30 is fixed to the auxiliary machine 110.

  The annular member 90 is made of, for example, stainless steel or iron, and has a cross-sectional shape in which a pair of oblong flat portions 91 are recessed in a concave shape as shown in FIGS. 10 and 11. . The annular member 90 is positioned outside the second cylindrical portion 71 at the curved portions 72a and 72b, passes through the slits 74a to 74d, and is positioned inside the second cylindrical portion 71 at the extending portions 73a and 73b. In order to do so, it is attached to the second cylindrical portion 71. The annular member 90 is held from the inside by the curved portions 72a and 72b and is held from the outside by the extending portions 73a and 73b. That is, the annular member 90 is fixed to the second cylindrical portion 71 by being sandwiched from both sides by the curved portions 72a and 72b and the extending portions 73a and 73b.

  At this time, since the braided conductor 20 is inserted into the annular member 90 as described above, the braided conductor 20 is sandwiched between the annular member 90 and the second cylindrical portion 71 by the curved portions 72a and 72b. . Accordingly, since the braided conductor 20 can be reliably brought into contact with the shield shell 70 by the curved portions 72a and 72b where the tightening force of the annular member 90 is the strongest, effective electrical connection between the braided conductor 20 and the shield shell 70 can be achieved. Sufficient connection can be ensured.

  Further, since the folded portion 21 of the braided conductor 20 covers the outer periphery of the annular member 90 as described above, the braided conductor 20 (folded portion 21) is also connected to the second cylindrical portion 71 and the annular member in the extending portions 73a and 73b. 90. For this reason, the effective electrical connection between the braided conductor 20 and the shield shell 70 can be ensured also in the extending portions 73a and 73b.

  In addition, as shown in FIG. 12, in the annular member 90 before being connected to the shield shell 70 (before deformation), the flat portion 91 is not recessed. That is, the annular member 90 before deformation has an oval cross-sectional shape corresponding to the cross-sectional shape of the second cylindrical portion 71 of the shield shell 70.

  Next, a method for connecting the braided conductor 20 and the shield shell 70 in the present embodiment will be described with reference to FIGS.

  FIG. 13 is a process diagram illustrating a method for connecting a braided conductor and a shield shell in the present embodiment, FIGS. 14A and 14B are diagrams illustrating step S20 of FIG. 13, and FIGS. 15A and 15B. FIG. 14B is a diagram showing step S40 in FIG.

First, in step S10 of FIG. 13, the braided conductor 20, the shield shell 70, and the annular member 90 are prepared. In step S10, the shield shell 70 (see FIGS. 8 and 9) in which the extending portions 73a and 73b are located outside the virtual straight lines VL ₁ and VL ₂ is prepared, and the flat portion 91 is recessed. An annular member 90 (see FIG. 12) is prepared.

  Next, the braided conductor 20 is attached to the annular member 90 in step S20 of FIG. Specifically, first, as shown in FIG. 14A, the braided conductor 20 is inserted into the annular member 90 so that the tip portion of the braided conductor 20 protrudes from the annular member 90. Next, as shown in FIG. 14B, the leading end portion of the braided conductor 20 is folded outside the annular member 90, and the outer periphery of the annular member 90 is covered with the folded portion 21.

  Next, in step S <b> 30 of FIG. 13, the annular member 90 to which the braided conductor 20 is attached is attached to the second cylindrical portion 71 of the shield shell 70. Specifically, the annular member 90 is positioned outside the second cylindrical portion 71 at the curved portions 72a and 72b, passes through the slits 74a to 74d, and the second cylindrical portion 71 at the extending portions 73a and 73b. It attaches to the 2nd cylinder part 71 so that it may be located inside. Thus, the braided conductor 20 is interposed between the annular member 90 and the shield shell 20 at the curved portions 72a and 72b, and the folded portion 21 is interposed between the annular member 90 and the shield shell 20 at the extending portions 73a and 73b. .

  At this time, in this embodiment, since the second cylindrical portion 71 of the shield shell 70 has the steps 76a to 77b, the annular member 90 can be easily positioned with respect to the second cylindrical portion 71. It has become.

Next, in step S40 of FIG. 13, after inserting the core 123 into the second cylindrical portion 71 to which the braided conductor 20 and the annular member 90 are attached, as shown in FIGS. 15 (a) and 15 (b). Then, the upper and lower molds 121 and 122 are moved closer to each other, and the extending portions 73a and 73b are pressed inward to move onto the virtual straight lines VL ₁ and VL ₂ . Accordingly, the flat portion 91 of the annular member 90 is recessed inward to form a recess 92 (see FIG. 11) in the annular member 90, and the annular member 90 is formed by the curved portions 72a and 72b and the extending portions 73a and 73b. Since it is clamped from both sides, the braided conductor 20 and the annular member 90 are fixed to the shield shell 70.

If the braided conductor 20 and the annular member 90 are relatively thick, the braided conductor 20 and the annular member 90 are shielded 70 even if the extending portions 73a and 73b are not positioned on the virtual straight lines VL ₁ and VL _2. In some cases, it can be fixed.

  Steps S20 and S30 in the present embodiment correspond to an example of a first step in the present invention, and step S40 in the present embodiment corresponds to an example of a second step in the present invention.

  As described above, in the present embodiment, the annular member 90 is positioned outside the second cylindrical portion 71 by the curved portions 72a and 72b, passes through the slits 74a to 74d, and is extended by the extending portions 73a and 73b. It attaches to the 2nd cylinder part 71 so that it may be located inside the 2nd cylinder part 71, the said cyclic | annular member 90 is hold | maintained from the inner side by the curved parts 72a and 72b, and is extended from the outer side by the extension parts 73a and 73b. By being held, it is fixed to the second cylindrical portion 71, and the braided conductor 20 is sandwiched between the shield shell 70 and the annular member 90 by the curved portions 72a and 72b. For this reason, in this embodiment, a braided conductor and a shield shell can be connected, without forming the part which protrudes outside in an annular member.

  Here, in order to impart waterproof performance to the connector, the connector is inserted into a rubber exterior component. At this time, when a conventional connector having a caulking portion protruding outward is inserted into the exterior member, the caulking portion interferes with the exterior member, resulting in poor assembly workability of the connector.

  On the other hand, in this embodiment, since the part which protrudes outside is not formed in the annular member 90, and the annular member 90 does not interfere with an exterior member, the assembly workability | operativity of the electric wire 1 with a connector improves. . Further, in the present embodiment, since the portion protruding outward is not formed in the annular member 90, it is not necessary to form a recess for avoiding the protruding portion on the inner surface of the exterior component.

  Further, a tape may be wound around the outer periphery of the folded portion so that the folded portion at the tip of the braided conductor cannot be unwound. At this time, in the conventional connector, the tape floats at the caulking portion protruding to the outside, so that it is necessary to wind the tape several times.

  On the other hand, in the present embodiment, the portion protruding outward is not formed on the annular member 90, and the folded portion 21 of the braided conductor 20 can be fixed with a small number of winding tapes. Assembling workability is improved.

  Furthermore, in this embodiment, the braided conductor 20 is located inside the annular member 90 over the entire circumference of the braided conductor 20. For this reason, it is not necessary to unravel the braided conductor 20, and the assembly workability of the electric wire 1 with a connector is excellent.

  In the present embodiment, the folded portion 21 is formed at the tip of the braided conductor 20. For this reason, it is easy to attach the braided conductor 20 and the annular member 90 to the shield shell 70, and the assembly workability of the electric wire 1 with a connector is excellent.

  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, although not particularly illustrated, the folded portion 21 may not be formed at the tip portion of the braided conductor 20. However, in this case, electrical connection between the braided conductor 20 and the shield shell 70 at the extending portions 73a and 73b cannot be ensured.

  Although not particularly illustrated, the folded portion 21 is not formed at the distal end portion of the braided conductor 20, and the braided conductor 20 is sandwiched between the shield shell 70 and the annular member 90 by the extending portions 73a and 73b. May be. In this case, the braided conductor 20 is unwound at locations corresponding to the slits 74 a to 74 d of the second cylindrical portion 71, and slits are also formed in the braided conductor 20.

DESCRIPTION OF SYMBOLS 1 ... Electric wire with a connector 10 ... Bundled electric wire 15 ... Electric wire 16 ... Center conductor 161 ... Elementary wire 17 ... Covering layer 20 ... Braided conductor 21 ... Folded part 30 ... Connector 40 ... Terminal 41 ... Terminal connection part 411 ... Connection hole 412 ... Engagement Stop 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
72a, 72b ... curved portion
72a ₁ , 72b ₂ ... end
73a, 73b ... Extension part
74a-74d ... slit
75 ... Supporting part
76a, 76b ... 1st level | step-difference part
77a, 77b ... second stepped portion 78 ... second flange portion
781 ... Mounting hole 80 ... Wire seal 81 ... Insertion hole 85 ... Strain relief 86 ... Insertion hole 87 ... Slit 90 ... Ring member 91 ... Flat part 92 ... Recess 100 ... Connection structure 110 ... Auxiliary machine 111 ... Installation holes 121, 122 ... Mold 123 ... Core VL _a , VL _b ... Virtual straight line

Claims (8)

A connection structure for connecting a tubular braided conductor to a cylindrical portion of a shield shell using an annular member,
The cylindrical portion is
A pair of curved portions that fold back into a curved shape;
A pair of extending portions extending linearly or arcuately between the curved portions;
A plurality of slits interposed between the curved portion and the extending portion,
The annular member is attached to the cylindrical portion so as to be positioned outside the cylindrical portion at the curved portion, pass through the slit, and be positioned inside the cylindrical portion at the extending portion,
The annular member is fixed to the cylindrical portion by being held from the inside by the curved portion and held from the outside by the extending portion,
The connection structure of the braided conductor and the shield shell, wherein the braided conductor is sandwiched between the annular member and the cylindrical portion at least by the curved portion. A connection structure between a braided conductor and a shield shell according to claim 1,
A connection structure of a braided conductor and a shield shell, wherein at least a part of the extending portion is located on a virtual straight line connecting ends of the curved portion. A connection structure between a braided conductor and a shield shell according to claim 1 or 2,
The connection structure of the braided conductor and the shield shell, wherein the braided conductor is located inside the annular member over the entire circumference of the braided conductor. A connection structure between a braided conductor and a shield shell according to claim 3,
The braided conductor has a folded portion located on the outer side of the annular member, with the tip portion of the braided conductor being folded.
The folded portion is a connection structure of a braided conductor and a shield shell, which is sandwiched between the cylindrical portion and the annular member at the extended portion. A connection structure between a braided conductor and a shield shell according to any one of claims 1 to 4,
The cylindrical portion is
A support portion for supporting the curved portion and the extending portion;
A first step portion formed between the support portion and the curved portion;
A connection structure of a braided conductor and a shield shell, including a second step portion formed between the support portion and the extension portion. 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 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 member fixed to the cylindrical portion,
The cylindrical portion is
A pair of curved portions that fold back into a curved shape;
A pair of extending portions extending linearly or arcuately between the curved portions;
A plurality of slits interposed between the curved portion and the extending portion,
The annular member is attached to the cylindrical portion so as to be positioned outside the cylindrical portion at the curved portion, pass through the slit, and be positioned inside the cylindrical portion at the extending portion,
The annular member is fixed to the cylindrical portion by being held from the inside by the curved portion and held from the outside by the extending portion,
The braided conductor is an electric wire with a connector, which is sandwiched between the annular member and the cylindrical portion at least by the curved portion. A connecting method for connecting a tubular braided conductor to a cylindrical portion of a shield shell using an annular member,
A first step of attaching the annular member and the braided conductor to the cylindrical portion;
A second step of deforming the tubular portion,
The cylindrical portion is
A pair of curved portions that fold back into a curved shape;
A pair of extending portions extending linearly or arcuately between the curved portions;
A plurality of slits interposed between the curved portion and the extending portion,
In the first step, the annular member is located outside the cylindrical portion at the curved portion, passes through the slit, is located inside the cylindrical portion at the extending portion, and the braid. Including attaching the annular member and the braided conductor to the tubular portion such that a conductor is interposed between the annular member and the tubular portion at least at the curved portion;
In the second step, the annular portion is held from the inside by the curved portion by pressing the extending portion toward the inside of the cylindrical portion, and the annular member is held from the outside by the extending portion. Connecting the braided conductor and the shield shell. A method for connecting a braided conductor and a shield shell according to claim 7,
The extending part before the second step is located outside a virtual straight line connecting ends of the curved parts,
The second step includes a braided conductor including pressing the extension portion toward the inside of the tube portion so that at least a part of the extension portion is located on the virtual straight line; How to connect the shield shell.

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