Shielding conductive path

Abstract

The shielded conductive path (10) comprises: a shielded wire (11) having a core wire (16), a braided wire (14), and a sheath (15), wherein a folded-back portion (14A) covering the outer surface of the sheath (15) is formed by folding back the front end of the braided wire (14); a sleeve (27) fastened between the outer surface of the sheath (15) and the folded-back portion (14A); and a second outer conductor (34) having a rear crimp portion (45) formed at its rear end. The sleeve (27) has a tightening portion (50) and a claw portion (52) that protrudes radially inward from the rear end of the tightening portion (50). The sleeve (27) has a cylindrical base (27A) and an extension portion (27B) that extends rearward from the rear end edge of the base (27A). The outer diameter of the rear end of the extension portion (27B) is larger than the outer diameter of the base (27A). The rear crimping portion (45) is crimped to the sleeve (27) in such a way that the tightening portion (50) surrounds the folded-back portion (14A) and the claw portion (52) is opposite to the extension portion (27B) from the rear.

Description

Technical Field

[0001] This disclosure relates to shielding conductive paths. Background Technology

[0002] Patent Document 1 discloses a shielded wire with terminals, comprising a shielded wire and terminals. The shielded wire has a braided wire surrounding the wire and an outer sheath surrounding the braided wire. A folded-back portion covering the outer peripheral surface of the outer sheath is formed by folding back the front end of the braided wire. A cylinder is formed at the rear end of the terminal, and a protrusion protruding radially inward is formed at the rear end of the cylinder. A sleeve is disposed in the gap between the outer peripheral surface of the outer sheath and the folded-back portion, and the sleeve is fastened to the outer peripheral surface of the sheath. The cylinder is fastened to the sleeve in a manner that surrounds the folded-back portion. The protrusion is disposed in a manner that faces the sleeve from the rear. When a rearward tensile force is applied to the shielded wire, the sleeve, which is integral with the shielded wire, engages with the protrusion, thereby holding the shielded wire and terminals in a fixed state. Existing technical documents Patent documents

[0003] Patent Document 1: Japanese Patent Application Publication No. 2018-147564 Summary of the Invention The problem that the invention aims to solve

[0004] Because a braided section is provided between the inner circumferential surface of the tube and the outer circumferential surface of the sleeve, the position where the sleeve presses down on the protrusion under tensile load is radially inward compared to the bend where the protrusion connects to the tube. When the sleeve presses down on the protrusion, the torque of the force with the bend where the protrusion connects to the tube as the origin is greater the closer it is to the protruding end of the protrusion. Therefore, in Patent Document 1, when a tensile load is applied to the shielded wire, the protrusion pressed down by the sleeve may deform in an open manner, thereby reducing the reliability of the fixing function based on the locking of the sleeve and the protrusion.

[0005] The shielded conductive path disclosed herein is implemented based on the aforementioned conditions in order to improve the reliability of the mounting function relative to tensile load. Solution for solving the problem

[0006] The shielded conductive path disclosed herein has the following characteristics: A shielded wire has a shielding layer surrounding a conductor and a sheath surrounding the shielding layer, wherein a folded-back portion covering the outer peripheral surface of the sheath is formed by folding back the front end of the shielding layer. A sleeve, disposed in the gap between the outer peripheral surface of the sheath and the folded-back portion, and fastened to the outer peripheral surface of the sheath; and The outer conductor has a crimped portion formed at its rear end. The crimping part has a cylindrical tightening part and a claw part that protrudes radially inward from the rear end of the tightening part in a cantilever shape. The sleeve has a base and an extension extending rearward from the rear end edge of the base. The outer diameter of the rear end of the extension is larger than the outer diameter of the base. The crimping portion is crimped onto the sleeve in a state where the tightening portion surrounds the folded portion and the claw portion is opposite to the extension portion from the rear. Invention Effects

[0007] According to this disclosure, the reliability of the fixing function relative to tensile load can be improved. Attached Figure Description

[0008] Figure 1 It is an exploded 3D diagram of the shielded conductive path. Figure 2 It is a three-dimensional view of the sleeve fastened to the front of the sheath. Figure 3 It is a three-dimensional view of the sleeve after it is secured to the sheath. Figure 4 This is a three-dimensional diagram of the second outer conductor. Figure 5 This is a partial side cross-sectional view showing the state in which the rear crimped portion is fastened to the end of the shielded wire. Figure 6 This is a side cross-sectional view showing the end of a stripped shielded wire. Figure 7 This is a side cross-sectional view showing the state in which the female terminal is connected to the end of the covered wire. Figure 8 This is a side cross-sectional view showing the state in which the sleeve is inserted into and secured to the end of the shielded wire, and the clamp is assembled to the end of the wire covering. Figure 9 This is a side view showing the state in which the dielectric body assembled on the female terminal is inserted into the square tube portion of the first outer conductor. Figure 10 This is a side view showing the state in which the second outer conductor is assembled. Figure 11 yes Figure 10 AA section diagram. Figure 12 yes Figure 10 BB cross-section diagram. Figure 13 This is a partial side cross-sectional view showing another embodiment in which the rear crimped portion is fastened to the end of the shielded wire. Figure 14 This is a side cross-sectional view illustrating other embodiments of the sleeve. Detailed Implementation

[0009] [Description of embodiments of this disclosure] First, embodiments of this disclosure will be described. The shielded conductive path disclosed herein (1) The device comprises a shielded wire, a sleeve, and an outer conductor. The shielded wire has a shielding layer surrounding the conductor and a sheath surrounding the shielding layer. A folded-back portion covering the outer circumferential surface of the sheath is formed by folding back the front end of the shielding layer. The sleeve is positioned in the gap between the outer circumferential surface of the sheath and the folded-back portion and is fastened to the outer circumferential surface of the sheath. A crimping portion is formed at the rear end of the outer conductor. The crimping portion has a cylindrical tightening portion and a claw portion that cantilevered out radially inward from the rear end of the tightening portion. The sleeve has a base and an extension portion extending rearward from the rear end edge of the base, the outer diameter of the rear end of the extension portion being larger than the outer diameter of the base. The crimping portion is crimped onto the sleeve in a state where the tightening portion surrounds the folded-back portion and the claw portion is opposite to the extension portion from the rear. When the shielded wire is stretched backward, the extension presses the claw portion backward. When the extension presses the claw portion, the torque of the force originating from the bend connecting the claw portion and the tightening portion is smaller at the base end of the claw portion than at the protruding end. Because the extension presses the base end of the claw portion in the shielded conductive path of this disclosure, the claw portion does not deform in a rearward opening manner. Therefore, according to the shielded conductive path of this disclosure, the reliability of the fixing function relative to tensile load can be improved.

[0010] (2) Preferably, the outer periphery of the rear end of the extension contacts the inner periphery of the tightening part. According to this structure, the position of the pressing claw of the extension can be set at the position closest to the tightening part, so the reliability of the fixing function relative to tensile load can be maximized.

[0011] (3) Preferably, a portion of the folded-back portion is sandwiched between the outer peripheral surface of the extension portion and the inner peripheral surface of the tightening portion in a flattened state. This structure can prevent misalignment between the sleeve and the folded-back portion.

[0012] (4) Preferably, the outer periphery of the rear end of the extension is circular, and the rear end of the crimping part is elliptical. According to this structure, even if the fastening accuracy of the sleeve and the fastening accuracy of the crimping part are low, the part of the tightening part connected to the short axis can still abut against the outer periphery of the extension.

[0013] [Details of the embodiments of this disclosure] [Implementation Method 1] Reference Figures 1 to 12 This describes Embodiment 1, which embodies the present disclosure. In Embodiment 1, regarding the front-back direction, Figure 1 The left side is defined as the front, and the right side as the back. Regarding the up and down directions, Figure 1In this context, "above" is defined as "above," and "below" is defined as "below." Regarding left and right directions, [the following is a list of directions]. Figure 1 The inside side is defined as the right side, and the outside side is defined as the left side.

[0014] like Figure 1 As shown, the shielded conductive path 10 includes a shielded wire 11, a sleeve 27, a female terminal 18, a dielectric body 19, a first outer conductor 33, and a second outer conductor 34 as an outer conductor.

[0015] Shielded wires The shielded wire 11 is formed by surrounding the outer periphery of two insulated wires 13 with braided wire 14, and then surrounding the outer periphery of the braided wire 14 with a sheath 15. The braided wire 14 is a shielding layer made of fine metal wires. The two insulated wires 13 are so-called twisted pairs. Each insulated wire 13 has a core wire 16 as a conductor and an insulating covering 17 surrounding the outer periphery of the core wire 16. The core wire 16 is made of copper, copper alloy, aluminum, aluminum alloy, etc. The core wire 16 can be a single metal wire or a stranded wire made of multiple metal wires twisted together. The insulating covering 17 and the sheath 15 are made of synthetic resin that has insulating and flexible properties. The shielded wire 11 is terminated by stripping or other termination treatments, exposing the terminals of the core wire 16, the insulating covering 17, and the braided wire 14. The braided wire 14 is formed by braiding multiple fine metal wires into a cylindrical shape. The portion of the braided thread 14 that extends from the end of the sheath 15 and is exposed is folded back toward the end side (rear) of the sheath 15 to form a folded-back portion 14A that covers the outer peripheral surface of the sheath 15.

[0016] [casing] Sleeve 27 is made of metal. For example... Figure 2 , Figure 3 As shown, the sleeve 27 has a base 27A and an extension 27B. Before being fastened to the end of the sheath 15, the base 27A of the sleeve 27 is cylindrical (see reference). Figure 2 The extension 27B is cylindrical and communicates with the base 27A, extending rearward from the rear end edge of the base 27A. As the extension 27B moves rearward from the base 27A, it expands in diameter into a funnel shape.

[0017] The sleeve 27 is fastened to the outer peripheral surface of the sheath 15, and then folded back through the exposed braided thread 14, thereby being positioned in a manner that covers the outer peripheral surface of the sheath 15 at the end of the outer peripheral surface and the gap between the folded-back portion 14A (braided thread 14) (see reference). Figure 8 The base 27A, fastened to the end of the sheath 15, becomes six flat plates arranged in a hexagonal ring (see reference). Figure 3 After being fastened to the end of the sheath 15, the extension 27B is shaped such that it gradually changes from a hexagonal shape to a circular shape as it moves rearward from the base 27A. The outer diameter of the rear end of the extension 27B is larger than the outer diameter of the base 27A.

[0018] [Female terminal] The female terminal 18 is formed by stamping a metal sheet into a predetermined shape. The female terminal 18 may use metals such as copper, copper alloys, aluminum, or aluminum alloys. Figure 7 As shown, the female terminal 18 is connected to the terminal of each insulated wire 13. The female terminal 18 has an insulating cylinder 21, a wire spool 22, and a cylindrical section 23. The insulating cylinder 21 is crimped around the outer periphery of the insulating covering portion 17 of the insulated wire 13. The wire spool 22 is connected to the front of the insulating cylinder 21 and crimped around the outer periphery of the core wire 16. The cylindrical section 23 is connected to the front of the wire spool 22 and is inserted into a counter-side terminal (not shown). A resilient contact piece (not shown) is disposed inside the cylindrical section 23. By inserting the counter-side terminal into the cylindrical section 23 from the front, the counter-side terminal and the resilient contact piece make resilient contact, thereby electrically connecting the counter-side terminal and the female terminal 18.

[0019] [Clamping component] A clamping member 25 is fitted onto two sheathed wires 13 extending from the end of the sheath 15. The clamping member 25 is formed by stamping a sheet metal into a predetermined shape. For example... Figure 1 As shown, the clamping member 25 is roughly W-shaped when viewed from the front and rear directions. The clamping member 25 is crimped around the outer periphery of the insulating covering portion 17 of each covered wire 13 (see reference). Figure 8 The clamp 25 is pressed against the two covered wires 13 to maintain their relative positions.

[0020] [Dielectric] like Figure 1 As shown, the dielectric body 19 includes a lower dielectric body 28 with an opening at the top and disposed at the bottom, and an upper dielectric body 29 assembled from the top of the lower dielectric body 28. Both the lower dielectric body 28 and the upper dielectric body 29 are made of insulating synthetic resin. With the lower dielectric body 28 and the upper dielectric body 29 assembled, a cavity for receiving the female terminal 18 is formed extending along the front-back direction of the dielectric body 19. In this embodiment, the two cavities are arranged in a left-right direction.

[0021] [First outer conductor] The first outer conductor 33 is formed by stamping a metal sheet into a predetermined shape. The first outer conductor 33 may be made of copper, copper alloys, aluminum, aluminum alloys, etc. Figure 1As shown, the first outer conductor 33 has a square tube portion 35, a connecting plate portion 36, and a first connecting portion 37. The square tube portion 35 is a square tube extending in the front-rear direction. The connecting plate portion 36 is disposed behind the square tube portion 35, is an elongated plate extending in the front-rear direction, and overlaps with the folded-back portion 14A from below. The first connecting portion 37 connects the square tube portion 35 and the connecting plate portion 36 in the front-rear direction. The inner shape of the square tube portion 35 is formed to be the same as or slightly larger than the outer shape of the dielectric body 19. The dielectric body 19 is inserted into the interior of the square tube portion 35 from the rear. Protrusions 43 (see reference) are formed on the rear portions of the left and right walls of the square tube portion 35, protruding outward in the left and right directions, respectively. Figure 9 。).

[0022] like Figure 1 As shown, the first connecting portion 37 extends obliquely downward and rearward from the lower side of the rear end edge of the square tube portion 35. The connecting plate portion 36 extends rearward from the center portion in the left-right direction of the rear end edge of the first connecting portion 37. The connecting plate portion 36 is a plate that extends elongatedly in the front-rear direction. The center portion in the left-right direction of the connecting plate portion 36 is curved in a manner that bulges downward from the front end to the rear end.

[0023] [Second outer conductor] The second outer conductor 34 is formed by stamping a metal sheet into a predetermined shape. The second outer conductor 34 uses copper, copper alloy, aluminum, aluminum alloy, etc. The second outer conductor 34 has a front crimping portion 44, a rear crimping portion 45 serving as a crimping portion, and a second connecting portion 46. The front crimping portion 44 is located at the front and is crimped to the outer periphery of the square tube portion 35 (see reference). Figure 10 The rear pressing portion 45 is located on the rear side and is pressed against the folded-back portion 14A and the connecting plate portion 36 that overlaps with the folded-back portion 14A (see reference). Figure 11 The second connecting part 46 connects the front crimping part 44 and the rear crimping part 45.

[0024] The front pressing portion 44 extends down the left and right edges of the upper wall, which extends in both the front-rear and left-right directions, to the left and right walls. For example... Figure 4 As shown, slits 44A are formed in an upwardly recessed manner at the center of each of the left and right walls in the front-rear direction. The lower ends 44B of each of the left and right walls, located rearward from slits 44A, hang down as shown by the double-dotted line before being assembled to the first outer conductor 33. Furthermore, after being assembled to the first outer conductor 33, each lower end 44B is bent towards the center in the left-right direction, wrapping around the first outer conductor 33 from below (see reference). Figure 10 。).

[0025] The protrusion 43 on the left wall of the square tube portion 35 is fitted into the slit 44A on the left wall of the front pressing portion 44 (see reference). Figure 10 The protrusion 43 on the right wall of the square tube portion 35 fits into the slit 44A on the right wall of the front pressing portion 44 (see reference). Figure 10Therefore, the relative positions of the square tube portion 35 and the front crimp portion 44 in the front-rear direction are determined. The second connecting portion 46 extends rearward from the rear end edge of the front crimp portion 44.

[0026] A rear crimping portion 45 is provided at the rear end of the second outer conductor 34 and behind the second connecting portion 46. The rear crimping portion 45 has a tightening portion 50 extending rearward from the rear end edge of the second connecting portion 46, and six claw portions 52 protruding radially inward from the rear end of the tightening portion 50 in a cantilever shape.

[0027] The tightening portion 50 is curved upwards when viewed from the front-rear direction. The tightening portion 50 has two right crimping tabs 50A and a left crimping tab 50B. The two right crimping tabs 50A extend spaced apart from each other along the front-rear direction at the right end edge of the tightening portion 50. One right crimping tab 50A is provided at the front end and one at the rear end of the right end edge of the tightening portion 50. A right locking portion 50C is formed at the end of each right crimping tab 50A. The right locking portion 50C is formed by folding the end of the right crimping tab 50A inwards in the left-right direction. These right crimping tabs 50A hang down as shown by the double-dotted line before being fastened to the shielded wire 11. Furthermore, after being fastened to the shielded wire 11, these right crimping tabs 50A are deformed so as to wrap around the shielded wire 11 from below, forming a shape that bends along the outer periphery of the shielded wire 11 (see reference). Figure 11 。).

[0028] The left crimping tab 50B extends from the center of the left end edge of the tightening portion 50 in the front-rear direction. The width of the left crimping tab 50B in the front-rear direction is set to be smaller than the front-rear distance between the pair of right crimping tabs 50A. A left locking portion 50D is formed at the end of the left crimping tab 50B. The left locking portion 50D is formed by folding the end of the left crimping tab 50B inward in the left-right direction. Before being fastened to the shielded wire 11, the left crimping tab 50B hangs down as shown by the double-dotted line. After being fastened to the shielded wire 11, the left crimping tab 50B is deformed in a way that wraps around the shielded wire 11 from below, so as to be bent along the outer peripheral surface of the shielded wire 11 (see reference). Figure 11 In this case, the left crimp tab 50B is positioned between the two right crimp tabs 50A. The tightening portion 50, the right crimp tabs 50A, and the left crimp tab 50B are fastened to the end of the shielded wire 11, forming a cylindrical shape with an elliptical shape with the vertical direction as the minor axis (see reference). Figure 11 , Figure 12 。).

[0029] Six claw portions 52 are disposed separately from each other along the rear end edge of the tightening portion 50. These claw portions 52 are bent at approximately right angles from the rear end edge of the tightening portion 50 toward the radially inward side of the shielded wire 11 when the tightening portion 50 is secured to the end of the shielded wire 11 (see reference). Figure 5The rear end of the tightening portion 50 and the base end 52B of the claw portion 52 are connected at a right angle via the bending portion 52A. The end portion 52C of the claw portion 52 is located radially inward of the shielded wire 11 compared to the bending portion 52A and the base end portion 52B. When the tightening portion 50, the right crimping piece 50A, and the left crimping piece 50B are fastened to the end of the shielded wire 11, the end portions 52C of these claw portions 52 are recessed into the outer periphery of the sheath 15 (see reference). Figure 5 。).

[0030] With the rear crimping portion 45 securely crimped to the folded-back portion 14A and the connecting plate portion 36 (i.e., the end of the shielded wire 11), the claw portion 52 is configured to make rear-facing contact with the rear end of the extension portion 27B of the sleeve 27 (see reference). Figure 5 。).

[0031] Furthermore, with the rear crimping portion 45 securely crimped to the folded-back portion 14A and the connecting plate portion 36 (i.e., the end of the shielded wire 11), the right locking portion 50C and the left side edge of the connecting plate portion 36 are positioned slightly apart from each other from the left (see reference). Figure 11 Furthermore, the left locking portion 50D and the right side edge of the connecting plate portion 36 are positioned slightly apart from each other from the right (see reference). Figure 11 This can suppress the radial expansion deformation of the rear crimping portion 45 toward the shielded wire 11.

[0032] [Assembly of shielded conductive paths] Next, an example of the assembly process for the shielded conductive path 10 will be described. The assembly process for the shielded conductive path 10 is not limited to the following description.

[0033] First, such as Figure 6 As shown, at the terminal portion of the shielded wire 11, a predetermined range of the sheath 15 is removed. This exposes the braided wire 14 in the area where the sheath 15 has been removed. Furthermore, the exposed braided wire 14 is cut in a predetermined area to expose the wrapped wire 13. Then, at the terminal portion of the wrapped wire 13, a predetermined range of the insulating covering 17 is removed. This exposes the core wire 16 in the area where the insulating covering 17 has been removed.

[0034] Next, as Figure 7 As shown, the wire tube 22 of the female terminal 18 is pressed against the outer periphery of the core wire 16, and the insulating tube 21 of the female terminal 18 is pressed against the outer periphery of the insulating covering portion 17. In this way, the female terminal 18 is connected to the end of the covered wire 13.

[0035] Next, as Figure 8As shown, the sleeve 27 is inserted into the end of the sheath 15. At this time, the sleeve 27 is inserted into the end of the sheath 15 with the extension 27B positioned rearward than the base 27A. Furthermore, the base 27A of the sleeve 27 is secured to the sheath 15. As a result, the shape of the base 27A changes from a cylindrical shape to a hexagonal shape (see reference). Figure 2 , 3 Furthermore, the braided wire 14 protruding from the end of the sheath 15 is folded back to form a folded-back portion 14A covering the outer periphery of the sleeve 27. The front end of the base 27A of the sleeve 27 inserted into the sheath 15 is located slightly behind the front end of the sheath 15. Furthermore, clamping members 25 are assembled on the two covered wires 13.

[0036] Next, a female terminal 18 is disposed within the upper dielectric body 29, and the lower dielectric body 28 is assembled onto the upper dielectric body 29. Furthermore, the dielectric body 19 is inserted from the rear into the square tube portion 35 of the first outer conductor 33 (see reference). Figure 9 At this time, the connecting plate portion 36 of the first outer conductor 33 overlaps with the lower part of the fold-back portion 14A (see reference). Figure 9 。).

[0037] Next, as Figure 10 As shown, the second outer conductor 34 is assembled. At this time, each slit 44A of the second outer conductor 34 is fitted with each protrusion 43 of the square tube portion 35. Furthermore, the lower end 44B of the front crimping portion 44 is bent towards the center in the left-right direction and crimped to the outer periphery of the square tube portion 35, and the rear crimping portion 45 (tightening portion 50, right crimping piece 50A, left crimping piece 50B) is crimped to the outer periphery of the folded-back portion 14A (braided wire 14) and the connecting plate portion 36.

[0038] At this time, as Figure 11 As shown, the right crimping tab 50A and the left crimping tab 50B are crimped together by wrapping around the outer periphery of the fold-back portion 14A and the connecting plate portion 36. At this time, the left locking portion 50D of the left crimping tab 50B is locked from the right to the right edge of the connecting plate portion 36, and the right locking portion 50C of the right crimping tab 50A is locked from the left to the left edge of the connecting plate portion 36. This suppresses the expansion deformation of the rear crimping portion 45. In this way, the tightening portion 50 of the rear crimping portion 45, the right crimping tab 50A, and the left crimping tab 50B surround and crimp the fold-back portion 14A to the sleeve 27. By crimping the rear crimping portion 45 to the fold-back portion 14A and the connecting plate portion 36, the braided wire 14, the first outer conductor 33, and the second outer conductor 34 are electrically connected. At this point, the metal wires constituting the foldback portion 14A move away from the corners of the hexagonal base portion 27A and converge towards the center of each side. This completes the assembly of the shielded conductive path 10.

[0039] At this time, as Figure 12As shown, the outer periphery of the rear end of the extension 27B of the sleeve 27 is circular. Furthermore, the tightening portion 50, the right pressing piece 50A, and the left pressing piece 50B at the rear end of the rear pressing portion 45 are formed into an elliptical cylindrical shape with the vertical direction as the minor axis. Further, as... Figure 5 As shown, the end portion 52C of the claw portion 52 of the rear crimping portion 45 is formed to be recessed into the outer periphery of the sheath 15. Furthermore, the base portion 52B of the claw portion 52 is formed to contact the rear end of the extension portion 27B of the sleeve 27 from the rear. Further, no fold-back portion 14A (braided thread 14) is provided between the outer periphery of the rear end with the largest outer diameter of the extension portion 27B and the inner surface of the tightening portion 50. Moreover, the outer periphery of the extension portion 27B contacts the inner periphery of the left and right central portions of the upper end of the tightening portion 50 (see reference). Figure 12 Therefore, even when the shielded wire 11 is stretched backward, the deformation of the claw 52 in a backward-expanding manner can be prevented.

[0040] Next, the effects of Implementation Method 1 will be explained.

[0041] The shielded conductive path 10 disclosed herein includes a shielded wire 11, a sleeve 27, and a second outer conductor 34. The shielded wire 11 has a braided wire 14 surrounding a core wire 16 and a sheath 15 surrounding the braided wire 14. A folded-back portion 14A covering the outer peripheral surface of the sheath 15 is formed by folding back the front end of the braided wire 14. The sleeve 27 is disposed in the gap between the outer peripheral surface of the sheath 15 and the folded-back portion 14A and is fastened to the outer peripheral surface of the sheath 15. The second outer conductor 34 has a rear crimp portion 45 formed at its rear end. The rear crimp portion 45 has a cylindrical tightening portion 50 and a claw portion 52 that cantilever-shaped and protrudes radially inward from the rear end of the tightening portion 50. The sleeve 27 has a cylindrical base 27A and an extension portion 27B extending rearward from the rear end edge of the base 27A. The outer diameter of the rear end of the extension portion 27B is larger than the outer diameter of the base 27A. The rear crimping portion 45 surrounds the folded-back portion 14A with the tightening portion 50, and the claw portion 52 is crimped onto the sleeve 27 from the rear opposite position relative to the extension portion 27B.

[0042] When the shielded wire 11 is stretched rearward, the extension 27B presses the claw portion 52 rearward. When the extension 27B presses the claw portion 52, the torque of the force originating from the bend portion 52A connecting the claw portion 52 and the tightening portion 50 is smaller when pressing the base end portion 52B of the claw portion 52 than when pressing the end portion 52C of the claw portion 52. Because the extension 27B presses the base end portion 52B of the claw portion 52, the claw portion 52 cannot deform in a rearward opening manner in the shielded conductive path 10 of this disclosure. Therefore, according to the shielded conductive path 10 of this disclosure, the reliability of the fixing function relative to tensile load can be improved.

[0043] The outer periphery of the rear end of the extension 27B of the shielded conductive path 10 disclosed herein contacts the inner periphery of the tightening portion 50. According to this structure, the position of the pressing claw portion 52 of the extension 27B can be set at the position closest to the inner peripheral surface of the tightening portion 50 (i.e., the base end portion 52B), thus maximizing the reliability of the fixing function relative to tensile load.

[0044] The rear outer periphery of the extension 27B of the shielded conductive path 10 disclosed herein is circular, and the rear end of the rear crimping portion 45 is elliptical. According to this structure, even if the fastening accuracy of the sleeve 27 and the fastening accuracy of the rear crimping portion 45 are low, the portion of the tightening portion 50 connected to the short axis can still abut against the outer periphery of the extension 27B.

[0045] [Other Implementation Methods] It should be understood that the embodiments disclosed herein are illustrative and not restrictive in all respects. The scope of the invention is not limited to the embodiments disclosed herein, but is intended to include all variations of the same meaning and scope as the claims, as shown by the claims.

[0046] Unlike the above-described implementation methods, such as Figure 13 As shown, alternatively, a portion of the folded-back portion 14A can be sandwiched between the outer peripheral surface of the extension portion 27B and the inner peripheral surface of the tightening portion 50 in a flattened state. This structure prevents misalignment between the sleeve 27 and the folded-back portion 14A.

[0047] In the above embodiments, the shielding layer is a braided wire, but the shielding layer is not limited to braided wire, and can also be a metal foil, etc.

[0048] In the above embodiments, the outer periphery of the rear end of the extension is circular and the rear end of the rear pressing part is elliptical. However, both the outer periphery of the rear end of the extension and the rear end of the rear pressing part can be circular.

[0049] In the above embodiments, twisted-pair wires are used as shielded wires, but coaxial cables may also be used.

[0050] Unlike the embodiments described above, a sleeve may also have a slit formed from one end to the other in the axial direction. Alternatively, it may be as follows... Figure 14 As shown in the sleeve 127, the outer diameter from the front end to the rear end of the extension 127B is larger than that of the base 127A. Explanation of reference numerals in the attached figures

[0051] 10: Shielding the conductive path 11: Shielded wire 13: Covered wires 14: Braided cable (shielding layer) 14A: Turnback section 15: Sheath 16: Core wire 17: Insulation Covering Section 18: Female terminal 19: Dielectric 21: Insulating cylinder 22: spool 23: Cylinder section 25: Clamping component 27, 127: Sleeve 27A, 127A: Base 27B, 127B: Extension 28: Lower dielectric body 29: Upper dielectric body 33: First outer conductor 34: Second outer conductor (outer conductor) 35: Square tube section 36: Connecting plate section 37: First connecting section 43: Protrusion 44: Front crimping part 44A: Slit 44B: Lower end 45: Rear crimped section (crease) 46: Second connecting section 50: Tightening section 50A: Right crimp tab 50B: Left crimp tab 50C: Right stop part 50D: Left stop 52: Claw 52A: Bending section 52B: Base end 52C: End portion

Claims

1. A shielded conductive path, comprising: A shielded wire has a shielding layer surrounding a conductor and a sheath surrounding the shielding layer, wherein a folded-back portion covering the outer peripheral surface of the sheath is formed by folding back the front end of the shielding layer. A sleeve, disposed in the gap between the outer peripheral surface of the sheath and the folded-back portion, and fastened to the outer peripheral surface of the sheath; and The outer conductor has a crimped portion formed at its rear end. The crimping part has a cylindrical tightening part and a claw part that protrudes radially inward from the rear end of the tightening part in a cantilever shape. The sleeve has a base and an extension extending rearward from the rear end edge of the base. The outer diameter of the rear end of the extension is larger than the outer diameter of the base. The crimping portion is crimped onto the sleeve with the tightening portion surrounding the folded-back portion and the claw portion facing the extension portion from the rear. A portion of the folded-back section is clamped in a flattened state between the outer peripheral surface of the extension section and the inner peripheral surface of the tightening section. The rear end of the folded-back portion is positioned between the rear end of the extension portion and the claw portion.

2. The shielded conductive path according to claim 1, wherein, The outer periphery of the rear end of the extension is circular. The rear end of the crimping part is elliptical.

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