Shielded Conductive Path

Abstract

To reduce a size of a diameter.SOLUTION: A shielded conduction path A comprises: a shield layer 13 that surrounds an insulation coating 12; a shield electric wire 10 having a sheath 14 surrounding the shield layer 13; and a sleeve 18 that surrounds an exposure part extended to a front side of the sheath 14 of the shield layer 13, and is caulked to an outer peripheral surface of the insulation coating 12. An open barrel crimp part 25 formed in an outer conductor 23 of the a shield terminal 20 is crimped to the sleeve 18 in a state the sleeve 18 and a region rear from the sleeve 18 of the insulation coating 12 are surrounded. In the region where the insulation coating 12 of the crimp part 25 is coated, an inner peripheral side engagement part 37 and an outer peripheral side engagement part 33 are formed. The inner peripheral side engagement part 37 is positioned in an inner side of a radial diameter from the region where the sleeve 18 of the crimp part 25 is surrounded, and the outer peripheral side engagement part 33 is engaged to the inner peripheral side engagement part 37 in a state where the outer peripheral side engagement part is housed in a concave part 31 of the outer peripheral surface of the inner peripheral side engagement part 37.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a shielded conductive path. [Background technology]

[0002] Patent Document 1 discloses a structure in which a U-shaped crimping portion formed on an outer conductor terminal is crimped onto the outer periphery of the shielded conductor of a shielded electric wire. One end of the crimping portion is formed with a first hook-shaped piece that is bent back, and the other end of the crimping portion is formed with a second hook-shaped piece that is bent back. When the crimping portion is crimped onto the shielded electric wire, the first hook-shaped piece and the second hook-shaped piece engage with each other, preventing the crimping portion from expanding and deforming. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-060105 Summary of the Invention [Problem to be solved by the invention]

[0004] The above-mentioned crimping portion has a first hook-shaped piece that is folded back and a second hook-shaped piece that is folded back and engaged so that they overlap in four layers in the radial direction, which poses a problem in that the crimped portion by the crimping portion becomes larger in the radial direction.

[0005] The shielded conductive path of the present disclosure was completed based on the above circumstances, and aims to achieve a smaller diameter. [Means for solving the problem]

[0006] The shield conductive path of the present disclosure includes: a shielded wire having an insulating coating surrounding a core wire, a shield layer surrounding the insulating coating, and a sheath surrounding the shield layer; a sleeve that surrounds an exposed portion of the shield layer that extends forward from the sheath and is crimped onto an outer peripheral surface of the insulating coating; a shield terminal having an outer conductor; an open-barrel-shaped crimping portion formed at a rear end of the outer conductor is crimped to the sleeve in a state in which the crimping portion surrounds the sleeve and a region of the insulating coating behind the sleeve; an inner circumferential side engaging portion and an outer circumferential side engaging portion are formed in a region of the crimping portion that covers the insulating coating; the inner peripheral side engaging portion is located radially inside a region of the crimping portion that surrounds the sleeve, The outer circumferential locking portion is locked to the inner circumferential locking portion in a state where it is housed in a recess in the outer circumferential surface of the inner circumferential locking portion. [Effects of the Invention]

[0007] According to the present disclosure, it is possible to achieve a smaller diameter. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a plan view of a shielded conductive path according to a first embodiment. [Figure 2] FIG. 2 is a cross-sectional view taken along line XX in FIG. [Figure 3] FIG. 3 is a cross-sectional view taken along line YY in FIG. [Figure 4] FIG. 4 is a perspective view showing the shape of the crimping portion before crimping. [Figure 5] FIG. 5 is a partial development view of the crimping portion. [Figure 6] FIG. 6 is a cross-sectional view of the shielded conductive path of the second embodiment taken along line YY. [Figure 7] FIG. 7 is a cross-sectional view of the shielded conductive path of the third embodiment taken along line YY. [Figure 8] FIG. 8 is a cross-sectional view of the shielded conductive path of the fourth embodiment taken along line YY. [Figure 9] FIG. 9 is a partial plan view of the shielded conductive path of the fifth embodiment. [Figure 10]FIG. 10 is a cross-sectional view taken along line ZZ in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be listed and described. The shield conductive path of the present disclosure includes: (1) A shielded electric wire having an insulating coating surrounding a core wire, a shielding layer surrounding the insulating coating, and a sheath surrounding the shielding layer; a sleeve surrounding an exposed portion of the shielding layer extending forward of the sheath and crimped onto the outer surface of the insulating coating; and a shielded terminal having an outer conductor, wherein an open barrel-shaped crimping portion formed at the rear end of the outer conductor is crimped onto the sleeve in a state where it surrounds the sleeve and a region of the insulating coating behind the sleeve, and an inner side locking portion and an outer side locking portion are formed in the region of the crimping portion that covers the insulating coating, the inner side locking portion is located radially inward of the region of the crimping portion that surrounds the sleeve, and the outer side locking portion is locked to the inner side locking portion while being accommodated in a recess in the outer surface of the inner side locking portion. In the shielded conductive path of the present disclosure, the inner circumferential engaging portion is located radially inward of the region of the crimping portion that surrounds the sleeve, and the outer circumferential engaging portion is housed in a recess on the outer periphery of the inner circumferential engaging portion, so that the diameter can be made smaller than when the inner circumferential engaging portion and recess are not formed in the crimping portion.

[0010] (2) It is preferable that the crimping portion has a retaining portion formed at a position where it abuts against the sleeve from behind or where it faces the sleeve closely from behind. With this configuration, when a tensile load acts on the shielded electric wire in the rear direction, the rear end of the sleeve engages with the retaining portion, thereby preventing the shielded electric wire from being displaced rearward relative to the shielded terminal.

[0011] (3) In (2), it is preferable that the retaining portion extends continuously over at least halfway around the circumference in the circumferential direction. With this configuration, it is possible to reliably prevent the shielded electric wire from being displaced rearward relative to the shielded terminal when a rearward tensile load acts on the shielded electric wire.

[0012] (4) In (2) or (3), it is preferable that the inner circumferential locking portion is formed on the retaining portion. With this configuration, the shape of the crimping portion can be simplified compared to when the inner circumferential locking portion is formed in a position separate from the retaining portion.

[0013] (5) The depth of the recess is preferably equal to or greater than the thickness of the crimped portion. With this configuration, the outer circumferential locking portion is entirely housed within the recess, preventing the outer circumferential locking portion from partially protruding from the outer circumferential surface of the crimped portion.

[0014] (6) It is preferable that a locking hole is formed in one of the inner circumferential locking portion and the outer circumferential locking portion, and a locking protrusion that is locked in the locking hole is formed in the other of the inner circumferential locking portion and the outer circumferential locking portion. According to this configuration, the locking protrusion is locked to the edge of the locking hole, thereby preventing the crimped portion from opening.

[0015] In (7) and (6), it is preferable that the opening dimension of the locking hole in the front-rear direction is set larger than the dimension of the locking protrusion in the front-rear direction. With this configuration, even if there is a large dimensional tolerance of the crimping portion or an assembly error during crimping, the locking hole and the locking protrusion can be reliably locked together.

[0016] (8) In (6) or (7), it is preferable that the circumferential opening dimension of the locking hole is set larger than the circumferential dimension of the locking protrusion. With this configuration, even if there is a large dimensional tolerance of the crimping portion or an assembly error during crimping, the locking hole and the locking protrusion can be reliably locked together.

[0017] (9) In (6) to (8), it is preferable that the locking hole is formed in the inner circumferential locking portion and the locking protrusion is formed in the outer circumferential locking portion. With this configuration, the locking portion between the hole edge of the locking hole and the locking protrusion is covered and hidden by the outer circumferential locking portion, thereby preventing foreign matter from interfering with the locking portion between the locking hole and the locking protrusion.

[0018] (10) In (6) to (8), it is preferable that the locking protrusion has a shape in which a part of the inner circumferential side locking portion or the outer circumferential side locking portion is bent back. This corresponds to Examples 1 and 2. According to this configuration, the locking strength of the locking protrusion is higher than that of a locking protrusion in which the tip edge of the inner circumferential side locking portion or the outer circumferential side locking portion is bent at a right angle.

[0019] (11) In (6) to (8), it is preferable that the locking protrusion has a shape obtained by cutting and raising a part of the inner or outer locking portion in the plate thickness direction. This corresponds to Examples 3 and 4. This configuration can reduce material costs compared to bending a portion that extends flush from the outer periphery of the inner or outer locking portion.

[0020] (12) In (6) to (8), the locking protrusion preferably has a shape obtained by bending the inner circumferential side locking portion or the outer circumferential side locking portion along a circumferential fold. This corresponds to Example 5. According to this configuration, the locking protrusion has high rigidity against an external force in the circumferential direction, so that it is possible to prevent the crimping portion from being deformed by deformation of the locking protrusion.

[0021] [Details of the embodiments of the present disclosure] [Example 1] A first embodiment of the present disclosure will be described with reference to Figures 1 to 5. Note that the present invention is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims. In the following description, the left side in Figures 1, 2, and 4 is defined as the front. The front-rear direction and the axial direction are used synonymously.

[0022] As shown in FIGS. 1 and 2, the shielded conductive path A of the present embodiment 1 includes a shielded electric wire 10, a sleeve 18 fitted onto the shielded electric wire 10, and a shielded terminal 20 connected to the front end of the shielded electric wire 10 using the sleeve 18.

[0023] The shielded wire 10 has a configuration in which a core wire 11 is surrounded by an insulating coating 12, a cylindrical shielding layer 13 is laid on the outer periphery of the insulating coating 12, and the outer periphery of the shielding layer 13 is surrounded by a sheath 14. The shielding layer 13 is made of a braided wire. The front end of the shielded wire 10 is disposed with its axial direction facing the front-rear direction. As shown in FIG. 2 , the sheath 14 is removed at the front end of the shielded wire 10, and the core wire 11, the insulating coating 12, and the shielding layer 13 are exposed in front of the sheath 14. Forward of the sheath 14, the insulating coating 12 is removed, and the core wire 11 is exposed in front of the insulating coating 12.

[0024] A sleeve 18 is fitted onto the outer peripheral surface of the shield layer 13 in a region rearward of the front end of the insulating coating 12. The sleeve 18 surrounds the shield layer 13 and the insulating coating 12. The front end of the shield layer 13 is folded back to cover the outer periphery of the sleeve 18. The region of the shield layer 13 surrounding the sleeve 18 is defined as a folded portion 15. The rear end of the folded portion 15 is located slightly forward of the rear end of the sleeve 18. The front end of the sleeve 18 is located slightly rearward of the front end of the insulating coating 12. The rear end of the sleeve 18 is located forward of the front end of the sheath 14. The region of the shielded wire 10 between the front end of the sheath 14 and the rear end of the sleeve 18 is defined as a functional portion 16 having a smaller diameter than the sheath 14 and the folded portion 15.

[0025] 2, the shield terminal 20 includes an inner conductor 21 connected to the front end of the core wire 11, a dielectric 22 that houses the inner conductor 21, and an outer conductor 23 that is attached to the dielectric 22 and surrounds the outer periphery of the dielectric 22. The outer conductor 23 includes a cylindrical main body 24 that forms the front end of the outer conductor 23, and a cylindrical crimping portion 25 that is connected to the rear end of the main body 24 and forms the rear end of the outer conductor 23. The axial direction of the outer conductor 23 is coaxial with the axial direction of the shielded electric wire 10 and faces the front-rear direction. The inner conductor 21 and the dielectric 22 are housed within the main body 24.

[0026] The crimping portion 25 is a portion for fixing the outer conductor 23 to the outer peripheral surface of the shielded electric wire 10. By crimping the crimping portion 25 to the shielded electric wire 10, the front end of the shielded electric wire 10 and the rear end of the shield terminal 20 are connected in a state where separation in the axial direction is restricted, and the outer conductor 23 and the shield layer 13 are connected to each other so as to be conductive.

[0027] 3 and 4, the crimping portion 25 has a base plate portion 26 extending rearward from the rear end of the main body portion 24, a first crimping portion 27 extending from the base plate portion 26 in one circumferential direction (counterclockwise in FIG. 3), and a second crimping portion 28 extending from the base plate portion 26 in the opposite circumferential direction to the first crimping portion 27 (clockwise in FIG. 3). As shown in FIG. 4, when the crimping portion 25 is not crimped to the shielded electric wire 10, the crimping portion 25 has a tapered shape that gradually increases in diameter from the front end to the rear end. A first extending edge 27E, which is the edge on the tip side in the extension direction of the first crimping portion 27, and a second extending edge 28E, which is the edge on the tip side in the extension direction of the second crimping portion 28, are spaced apart in the circumferential direction.

[0028] A retaining portion 29 extending in the circumferential direction is formed in a region of the crimping portion 25 surrounding the functional portion 16 in the front-to-rear direction. The retaining portion 29 has a shape formed by hammering a portion of the crimping portion 25 radially inward. A bottom plate portion 30 of the retaining portion 29 protrudes more inward than a region of the crimping portion 25 surrounding the sheath 14, the folded portion 15, and the sleeve 18. A circumferential recess 31 is formed in the outer peripheral surface of the retaining portion 29. The region in which the retaining portion 29 is formed in the circumferential direction extends from a position closer to the base portion 26 than the first extending edge 27E to the second extending edge 28E. When the crimping portion 25 is crimped, the retaining portion 29 extends continuously over most of the circumferential direction, i.e., over at least half the circumference.

[0029] An outer peripheral locking portion 33 is integrally formed with the first crimping portion 27. As shown in FIG. 4, the outer peripheral locking portion 33 protrudes circumferentially from the first extending edge 27E toward the second extending edge 28E. As shown in FIG. 5, the outer peripheral locking portion 33 is located on an extension of the retaining portion 29. In other words, the outer peripheral locking portion 33 is disposed in a region of the first crimping portion 27 that surrounds the functional portion 16. The outer peripheral locking portion 33 has a base 34 that protrudes flush with the first crimping portion 27 and a locking projection 35 that folds back radially inward from the protruding end of the base 34. The outer peripheral surface of the base 34 and the outer peripheral surface of the first crimping portion 27 are smoothly continuous, and the inner peripheral surface of the base 34 and the inner peripheral surface of the first crimping portion 27 are smoothly continuous.

[0030] The locking protrusion 35 is disposed so as to overlap the inner circumferential surface of the base 34, and is located radially inward of the base 34. The locking protrusion 35 is a protrusion that protrudes radially inward from the first crimping portion 27. The axial width of the locking protrusion 35 is the same as the axial width of the base 34. The locking protrusion 35 has a first locking surface 36 that faces in the circumferential direction opposite the protruding direction of the base 34.

[0031] An area of ​​the retaining portion 29 that is close to the second extending edge 28E functions as an inner circumferential locking portion 37. The inner circumferential locking portion 37 has a rectangular locking hole 38 that penetrates the retaining portion 29 from the outer circumferential side to the inner circumferential side. Of the inner circumferential surface along the opening edge of the locking hole 38, the inner surface that is parallel to the axial direction and closer to the second extending edge 28E in the circumferential direction functions as a second locking surface 39.

[0032] 1 and 4, a first displacement restriction portion 40 is formed in a region of the first extending edge 27E forward of the outer peripheral locking portion 33. The first displacement restriction portion 40 is formed by cutting out the first extending edge 27E in the circumferential direction. A second displacement restriction portion 41 is formed in a region of the second extending edge 28E forward of the retaining portion 29 and the inner peripheral locking portion 37. The second displacement restriction portion 41 is shaped to protrude in the circumferential direction from the second extending edge 28E.

[0033] The crimping of the crimping portion 25 to the shielded electric wire 10 is performed by setting the crimping portion 25 and the front end of the shielded electric wire 10 in an applicator (not shown). In the crimping process, the first crimping portion 27 and the second crimping portion 28 are deformed by reducing their diameter and are crimped so as to wrap around the outer periphery of the shielded electric wire 10. When the crimping portion 25 is crimped to the shielded electric wire 10, the area of ​​the crimping portion 25 forward of the outer periphery-side locking portion 33, the retaining portion 29, and the inner periphery-side locking portion 37 is crimped to the outer periphery of the sleeve 18 and the folded portion 15, and the folded portion 15 is radially sandwiched between the sleeve 18 and the crimping portion 25. As a result, the folded portion 15, the sleeve 18, and the crimping portion 25 are integrally fixed to each other so as to be conductive.

[0034] When the crimping portion 25 is crimped to the shielded electric wire 10, the outer circumferential locking portion 33, the retaining portion 29, and the inner circumferential locking portion 37 surround the functional portion 16. Because the outer diameter of the functional portion 16 is smaller than the outer diameter of the sheath 14 and the outer diameter of the folded-back portion 15, the inner circumferential surface of the bottom plate portion 30 of the retaining portion 29 abuts against or is in contact with the outer circumferential surface of the functional portion 16. The outer circumferential locking portion 33 is accommodated in the recess 31 on the outer circumferential surface of the retaining portion 29 and overlaps with the outer circumferential surface of the inner circumferential locking portion 37. The locking protrusion 35 of the outer circumferential locking portion 33 is accommodated in the locking hole 38 of the inner circumferential locking portion 37, and the first locking surface 36 and the second locking surface 39 abut circumferentially to be locked. The engagement between the first and second locking surfaces 36 and 39 prevents the crimping portion 25 from deforming in a manner that opens in the circumferential direction, and the crimping portion 25 is reliably fixed to the outer periphery of the shielded electric wire 10 .

[0035] The front end of the retaining portion 29 is disposed at a position where it abuts against the rear end of the sleeve 18 from behind, or at a position where it faces closely to the rear end of the sleeve 18 from behind. As a result, when the shielded electric wire 10 is pulled rearward relative to the shielded terminal 20, the rear end of the sleeve 18 is caught on the front end of the retaining portion 29. Therefore, the shielded electric wire 10 and the shielded terminal 20 are securely held in a fixed state without coming apart in the axial direction.

[0036] In front of the outer peripheral locking portion 33 and the inner peripheral locking portion 37 of the crimping portion 25, the first displacement restricting portion 40 and the second displacement restricting portion 41 are fitted together, thereby restricting the relative displacement in the axial direction between the first crimping portion 27 and the second crimping portion 28. The outer peripheral locking portion 33 is housed in the recess 31 of the retaining portion 29, so that the outer peripheral surface of the outer peripheral locking portion 33 does not protrude radially outward from the outer peripheral surface of the region of the crimping portion 25 where the retaining portion 29 is not formed.

[0037] The shielded conductive path A of the first embodiment includes a shielded wire 10, a sleeve 18, and a shielded terminal 20. The shielded wire 10 includes an insulating coating 12 surrounding a core wire 11, a shielding layer 13 surrounding the insulating coating 12, and a sheath 14 surrounding the shielding layer 13. The sleeve 18 surrounds an exposed portion of the shielding layer 13 that extends forward of the sheath 14, and is crimped onto the outer peripheral surface of the insulating coating 12. The shielded terminal 20 includes an outer conductor 23. An open-barrel-shaped crimping portion 25 is formed at the rear end of the outer conductor 23. The crimping portion 25 is crimped to the sleeve 18 in a state where it surrounds the sleeve 18 and a region of the insulating coating 12 behind the sleeve 18.

[0038] An inner-periphery-side locking portion 37 and an outer-periphery-side locking portion 33 are formed in a region of the crimping portion 25 that covers the insulating coating 12. The inner-periphery-side locking portion 37 is located radially inward of a region of the crimping portion 25 that surrounds the sleeve 18. The outer-periphery-side locking portion 33 is received in a recess 31 on the outer peripheral surface of the inner-periphery-side locking portion 37 and is locked to the inner-periphery-side locking portion 37. Therefore, compared to a case in which the inner-periphery-side locking portion 37 and the recess 31 are not formed in the crimping portion 25, the shielded conductive path A of the first embodiment can be made smaller in diameter. The depth dimension d of the recess 31 (see FIG. 1) is equal to or greater than the plate thickness t of the crimping portion 25 (see FIG. 2). With this configuration, the outer-periphery-side locking portion 33 is entirely received in the recess 31, preventing the outer-periphery-side locking portion 33 from partially protruding from the outer peripheral surface of the crimping portion 25.

[0039] The crimping portion 25 is formed with a retaining portion 29 that is disposed at a position where it abuts against the sleeve 18 from behind or at a position where it faces the sleeve 18 closely from behind. When a rearward tensile load acts on the shielded electric wire 10, the rear end of the sleeve 18 engages with the retaining portion 29, thereby preventing the shielded electric wire 10 from being displaced rearward relative to the shielded terminal 20. The retaining portion 29 extends continuously over at least halfway around the circumference. With this configuration, when a rearward tensile load acts on the shielded electric wire 10, it is possible to reliably prevent the shielded electric wire 10 from being displaced rearward relative to the shielded terminal 20.

[0040] The inner circumferential locking portion 37 of the shielded conductive path A of the present embodiment 1 is formed in the retaining portion 29. Compared to when the inner circumferential locking portion 37 is formed in a position separate from the retaining portion 29, the shielded conductive path A of the present embodiment 1 can simplify the shape of the crimping portion 25.

[0041] The inner circumferential locking portion 37 has a locking hole 38 formed therein, and the outer circumferential locking portion 33 has a locking protrusion 35 that is locked into the locking hole 38 formed therein. The locking protrusion 35 locks onto the edge of the locking hole 38, thereby preventing the crimping portion 25 from opening. With this configuration, the locking portion between the edge of the locking hole 38 and the locking protrusion 35 is covered and hidden by the outer circumferential locking portion 33, thereby preventing foreign matter from interfering with the locking portion between the locking hole 38 and the locking protrusion 35. As shown in FIG. 5 , the front-rear opening dimension Wa of the locking hole 38 is set larger than the front-rear dimension Wb of the locking protrusion 35. The circumferential opening dimension Da of the locking hole 38 is set larger than the circumferential dimension Db of the locking protrusion 35. According to this configuration, even if the dimensional tolerance of the crimping portion 25 or the assembly error during crimping is large, the locking hole 38 and the locking projection 35 can be reliably locked together.

[0042] The locking protrusions 35 of the present embodiment 1 have a shape in which a part of the outer-periphery locking portion 33 is bent back. Compared to locking protrusions in which the tip edge of the outer-periphery locking portion is bent at a right angle, the locking strength of the locking protrusions 35 of the shielded conductive path A of the present embodiment 1 is higher.

[0043] [Example 2] A second embodiment of the present disclosure will be described with reference to Fig. 6. In the shielded conductive path B of the second embodiment, the crimped portion 51 of the outer conductor 50 has a different configuration from that of the first embodiment. Since the other configurations are the same as those of the first embodiment, the same reference numerals are used for the same configurations, and descriptions of the structure, operation, and effects will be omitted.

[0044] The crimping portion 51 of the second embodiment has a base plate portion 26, a first crimping portion 27 extending from the base plate portion 26 in one circumferential direction, and a second crimping portion 28 extending from the base plate portion 26 in the opposite circumferential direction to the first crimping portion 27. When the crimping portion 51 is not crimped to the shielded electric wire 10, the crimping portion 51 has a tapered shape that gradually increases in diameter from the front end to the rear end. A retaining portion 29 extending in the circumferential direction, similar to that of the first embodiment, is formed in a region of the crimping portion 51 that surrounds the functional portion 16 of the shielded electric wire 10 in the front-rear direction.

[0045] An outer peripheral locking portion 52 is formed integrally with the first crimping portion 27. The outer peripheral locking portion 52 protrudes circumferentially from a first extending end edge (not shown) of the first crimping portion 27 toward a second extending end (not shown) of the second crimping portion 28. The outer peripheral locking portion 52 is located on an extension of the retaining portion 29. In other words, the outer peripheral locking portion 52 is located in a region of the first crimping portion 27 that surrounds the functional portion 16. The outer peripheral surface of the outer peripheral locking portion 52 and the outer peripheral surface of the first crimping portion 27 are smoothly continuous, and the inner peripheral surface of the outer peripheral locking portion 52 and the inner peripheral surface of the first crimping portion 27 are smoothly continuous. The outer peripheral locking portion 52 has a rectangular locking hole 53 that penetrates the outer peripheral locking portion 52 from the outer peripheral side to the inner peripheral side. Of the inner peripheral surfaces along the opening edge of the locking hole 53, the inner surface that is parallel to the axial direction and farther from the first extending end edge functions as a first locking surface .

[0046] An area of ​​the retaining portion 29 close to the second extending edge functions as an inner locking portion 55. The inner locking portion 55 has a locking protrusion 57 that is folded back radially outward from the second extending edge of the bottom plate portion 30 of the retaining portion 29. The locking protrusion 57 is arranged to overlap the outer peripheral surface of the bottom plate portion 30 and is located radially inward of the bottom plate portion 30. The locking protrusion 57 is in the form of a protrusion that protrudes radially outward from the bottom plate portion 30 and is housed in a recess 31 on the outer peripheral surface of the inner locking portion 55. The locking protrusion 57 has a second locking surface 58 that faces circumferentially.

[0047] When the crimping portion 51 is crimped to the shielded electric wire 10, the outer circumferential locking portion 52, the retaining portion 29, and the inner circumferential locking portion 55 surround the functional portion 16. The outer diameter of the functional portion 16 is smaller than the outer diameter of the sheath (not shown) and the outer diameter of the folded portion (not shown), so the inner circumferential surface of the retaining portion 29 abuts against or is in contact with the outer circumferential surface of the functional portion 16. The outer circumferential locking portion 52 is received in the recess 31 on the outer circumferential surface of the retaining portion 29 and overlaps with the outer circumferential surface of the inner circumferential locking portion 55. The locking protrusion 57 of the inner circumferential locking portion 55 is received in the locking hole 53 of the outer circumferential locking portion 52, and the first locking surface 54 and the second locking surface 58 abut circumferentially to be locked. The engagement between the first and second locking surfaces 54 and 58 prevents the crimping portion 51 from deforming in a manner that opens in the circumferential direction, and the crimping portion 51 is reliably fixed to the outer periphery of the shielded electric wire 10 .

[0048] [Example 3] Example 3 embodying the present disclosure will be described with reference to Fig. 7. In Example 3, the shielded conductive path C has an outer circumferential locking portion 62 constituting the crimped portion 61 of the outer conductor 60 configured differently from Example 1. The other configurations are the same as in Example 2, so the same components are denoted by the same reference numerals, and a description of the structure, operation, and effects will be omitted.

[0049] The outer peripheral locking portion 62 of the third embodiment has a locking protrusion 63 formed by cutting and raising a portion of the outer peripheral locking portion 62 of the first crimping portion 27 radially inward. The locking protrusion 63 has a bent portion 64 and an abutting portion 65. The bent portion 64 protrudes circumferentially from the tip end side of the outer peripheral locking portion 62 toward the base end side. The bent portion 64 has a bent shape so as to protrude radially inward beyond the tip end of the outer peripheral locking portion 62. The abutting portion 65 extends circumferentially from the protruding end of the bent portion 64. The radially inward protrusion dimension of the abutting portion 65 from the outer peripheral locking portion 62 is the same dimension as the plate thickness of the inner peripheral locking portion 37. The extending end surface of the abutting portion 65 functions as a first locking surface 66 perpendicular to the circumferential direction.

[0050] When the crimping portion 61 is crimped to the shielded electric wire 10, the outer-periphery locking portion 62 is housed in the recess 31 of the retaining portion 29 and overlaps the outer periphery of the inner-periphery locking portion 37. A part of the locking protrusion 63 fits into the locking hole 38 of the inner-periphery locking portion 37. That is, a part of the bent portion 64 and the entire abutting portion 65 are housed in the locking hole 38. The first locking surface 66 abuts against the second locking surface 39 of the locking hole 38 in the circumferential direction, and the first locking surface 66 and the second locking surface 39 are locked together. This locking action prevents the crimping portion 61 from expanding and deforming, and the crimped state of the crimping portion 61 to the shielded electric wire 10 is maintained.

[0051] The locking protrusion 63 has a shape in which a part of the outer-periphery-side locking portion 62 is cut and raised in the thickness direction of the outer-periphery-side locking portion 62. Compared to a case in which a portion extending flush from the outer periphery of the outer-periphery-side locking portion 62 is bent, the shielded conductive path C of the third embodiment can reduce material costs.

[0052] [Example 4] A fourth embodiment of the present disclosure will be described with reference to Fig. 8. In the shielded conductive path D of the fourth embodiment, the outer circumferential locking portion 72 constituting the crimped portion 71 of the outer conductor 70 has a different configuration from that of the first embodiment. As the other configurations are the same as those of the first embodiment, the same components are denoted by the same reference numerals, and a description of the structure, operation, and effects will be omitted.

[0053] The outer-periphery locking portion 72 of the fourth embodiment has a locking protrusion 73 formed by cutting and raising a part of the first crimping portion 27 radially inward. The locking protrusion 73 protrudes circumferentially from the tip end side toward the base end side of the outer-periphery locking portion 72. The radially inward protrusion dimension of the locking protrusion 73 from the outer-periphery locking portion 72 is the same dimension as the plate thickness of the inner-periphery locking portion 37.

[0054] When the crimping portion 71 is crimped to the shielded electric wire 10, the outer circumferential locking portion 72 is housed in the recess 31 of the retaining portion 29 and overlaps the outer periphery of the inner circumferential locking portion 37. A part of the locking protrusion 73 is housed in the locking hole 38 of the inner circumferential locking portion 37, and the protruding end edge of the locking protrusion 73 is locked in the circumferential direction in a line contact state with the second locking surface 39 of the locking hole 38. This locking action prevents the crimping portion 71 from expanding and deforming, and the crimped state of the crimping portion 71 to the shielded electric wire 10 is maintained.

[0055] The locking protrusion 73 has a shape in which a part of the outer-periphery-side locking portion 72 is cut and raised in the thickness direction of the outer-periphery-side locking portion 72. With this configuration, the shielded conductive path D of Example 4 can reduce material costs compared to a configuration in which a portion extending flush from the outer periphery of the outer-periphery-side locking portion 72 is bent.

[0056] [Example 5] A fifth embodiment of the present disclosure will be described with reference to Figures 9 and 10. In the shielded conductive path E of the fifth embodiment, the outer circumferential locking portion 82 constituting the crimped portion 81 of the outer conductor 80 has a different configuration from that of the first embodiment. As the other configurations are the same as those of the first embodiment, the same reference numerals are used for the same configurations, and descriptions of the structure, operation, and effects will be omitted.

[0057] The outer peripheral locking portion 82 of this fifth embodiment has a base 83 and a pair of front and rear locking protrusions 84. The base 83 protrudes circumferentially from the first extending edge 27E, flush with the first crimping portion 27. The pair of locking protrusions 84 are formed by bending the front and rear edges of the base 83 at right angles to the base 83. The boundary between the base 83 and the locking protrusions 84, i.e., the fold 85 of the locking protrusions 84, extends circumferentially. The locking protrusions 84 protrude radially inward beyond the inner peripheral surfaces of the base 83 and the first crimping portion 27. The radial protrusion dimension of the locking protrusions 84 is the same as the plate thickness of the second crimping portion 28 and the inner peripheral locking portion 37. The locking protrusion 84 is disposed at a position circumferentially spaced from the first extending edge 27E, i.e., in a region on the protruding end side of the base 83. The surface of the locking protrusion 84 facing the first extending edge 27E functions as a first locking surface 86 that is perpendicular to the circumferential direction.

[0058] When the crimping portion 81 is crimped to the shielded electric wire 10, the outer circumferential locking portion 82 is housed in the recess 31 of the retaining portion 29 and overlaps the outer periphery of the inner circumferential locking portion 37. The pair of front and rear locking projections 84 are housed in the locking holes 38 of the inner circumferential locking portion 37, and the first locking surfaces 86 of the locking projections 84 are locked in the circumferential direction with the second locking surfaces 39 of the locking holes 38. This locking action prevents the crimping portion 81 from expanding and deforming, and the crimped state of the crimping portion 81 to the shielded electric wire 10 is maintained.

[0059] The locking protrusions 84 have a shape obtained by bending the outer-periphery locking portion 82 along the circumferential folds 85, and therefore have high rigidity against external forces in the circumferential direction. Therefore, the shielded conductive path E of Example 5 can prevent the expanding deformation of the crimped portion 81 caused by the deformation of the locking protrusions 84.

[0060] [Other Examples] The present invention is not limited to the examples described above and in the drawings, but is defined by the claims. The present invention includes the equivalent meaning of the claims and all modifications within the scope of the claims, and is intended to include the following embodiments. In the above-mentioned Examples 1 to 5, one anti-pullout portion extends continuously in the circumferential direction, but multiple anti-pullout portions may be arranged at intervals in the circumferential direction, and an inner anti-pullout portion may be formed on the anti-pullout portion that is closest to the outer engagement portion in the circumferential direction. In the above-mentioned Examples 1 to 5, the anti-slip portion extends over most of the circumferential direction (at least half the circumference), but the anti-slip portion may be formed only in the minimum area necessary for engaging with the outer peripheral engaging portion. In the above-described first to fifth embodiments, the inner circumferential locking portion is formed on the retaining portion, but the inner circumferential locking portion may be formed in a position separate from the retaining portion. In the above-described first to fifth embodiments, the front end of the shield layer is folded back to form a folded portion that surrounds the outer peripheral surface of the sleeve, but the front end of the shield layer may not be folded back. In the above-mentioned Examples 1 to 5, the crimping portion surrounds the outer circumferential surface of the sheath, but the crimping portion may not surround the outer circumferential surface of the sheath. In the above Examples 1 to 5, the shielding layer was formed of a braided wire, but the shielding layer may also be made of a metal foil. In the third to fifth embodiments, the locking projections may be formed on the inner circumferential side locking portion, and the locking holes may be formed on the outer circumferential side locking portion. [Explanation of symbols]

[0061] A...Shielded conductive path B...Shielded conductive path C...Shielded conductive path D...Shielded conductive path E...Shielded conductive path Da: Circumferential opening dimension of the locking hole Db: Circumferential dimension of the locking protrusion Wa: Opening dimension of the locking hole in the front-rear direction Wb: Dimension of the locking protrusion in the front-rear direction d: Depth of recess t...plate thickness of crimped part 10...Shielded wire 11...Core wire 12...Insulating coating 13...Shield layer 14...Sheath 15...Folding section 16...Functional part 18...Sleeve 20...Shield terminal 21...Inner conductor 22...Dielectric 23...Outer conductor 24...Main body 25... Crimping part 26...Board 27...First crimping part 27E: 1st extended edge 28...Second crimping part 28E: 2nd extended edge 29...Retaining part 30...Bottom plate part 31...recess 33...Outer circumference locking portion 34...Base 35...Latching protrusion 36...First locking surface 37...Inner circumference locking portion 38...Latching hole 39...Second locking surface 40...First displacement restriction portion 41...Second displacement restriction portion 50...Outer conductor 51... Crimping part 52...Outer circumference locking portion 53...Latching hole 54...First locking surface 55...Inner circumference locking portion 57...Latching protrusion 58...Second locking surface 60...Outer conductor 61... Crimping part 62...Outer circumference locking portion 63...Latching protrusion 64...Bend 65...butt section 66...First locking surface 70...Outer conductor 71... Crimping part 72...Outer circumference locking portion 73...Latching protrusion 80...Outer conductor 81... Crimping part 82...Outer circumference locking portion 83...Base 84...Latching protrusion 85...crease 86...First locking surface

Claims

1. a shielded wire having an insulating coating surrounding a core wire, a shield layer surrounding the insulating coating, and a sheath surrounding the shield layer; a sleeve that surrounds an exposed portion of the shield layer that extends forward from the sheath and is crimped onto an outer peripheral surface of the insulating coating; a shield terminal having an outer conductor; an open-barrel-shaped crimping portion formed at a rear end of the outer conductor is crimped to the sleeve in a conductive state while surrounding the sleeve and a region of the insulating coating behind the sleeve, an inner circumferential side engaging portion and an outer circumferential side engaging portion are formed in a region of the crimping portion that covers the insulating coating; the outer circumferential side engaging portion is engaged with the inner circumferential side engaging portion, the inner peripheral side engaging portion is located radially inside a region of the crimping portion that surrounds the sleeve, The shielded conductive path is configured such that the outer circumferential locking portion and the inner circumferential locking portion are locked together, thereby preventing the crimped portion from opening in the circumferential direction.

2. A shielded electric wire having an insulating coating surrounding a core wire, a shielding layer surrounding the insulating coating, and a sheath surrounding the shielding layer; a sleeve that surrounds an exposed portion of the shield layer that extends forward from the sheath and is crimped onto an outer peripheral surface of the insulating coating; a shield terminal having an outer conductor; an open-barrel-shaped crimping portion formed at a rear end of the outer conductor is crimped to the sleeve in a state in which the crimping portion surrounds the sleeve and a region of the insulating coating behind the sleeve; an inner circumferential side engaging portion and an outer circumferential side engaging portion are formed in a region of the crimping portion that covers the insulating coating; the outer circumferential side engaging portion is engaged with the inner circumferential side engaging portion, the inner peripheral side engaging portion is located radially inside a region of the crimping portion that surrounds the sleeve, The shielded conductive path has a retaining portion formed in the crimping portion, the retaining portion being positioned in contact with the sleeve from behind or in a position facing the sleeve closely from behind.

3. The shielded conductive path according to claim 2 , wherein the retaining portion extends continuously over at least halfway around the circumference.

4. 4. The shielded conductive path according to claim 2, wherein the inner peripheral locking portion is formed in the retaining portion.

5. the outer circumferential side engaging portion is engaged with the inner circumferential side engaging portion in a state in which the outer circumferential side engaging portion is accommodated in a recess in the outer circumferential surface of the inner circumferential side engaging portion, 5. The shielded conductive path according to claim 1, wherein a depth of the recess is equal to or greater than a thickness of the crimped portion.

6. a locking hole is formed in one of the inner circumferential side locking portion and the outer circumferential side locking portion; 6. The shielded conductive path according to claim 1, wherein the other of the inner circumferential engaging portion and the outer circumferential engaging portion is formed with an engaging protrusion that is engaged with the engaging hole.

7. 7. The shielded conductive path according to claim 6, wherein the opening dimension of the locking hole in the front-rear direction is set larger than the dimension of the locking protrusion in the front-rear direction.

8. 8. The shielded conductive path according to claim 6, wherein a circumferential opening dimension of the locking hole is set larger than a circumferential dimension of the locking protrusion.

9. The locking hole is formed in the inner circumferential locking portion, The shielded conductive path according to claim 6 , wherein the locking projections are formed on the outer peripheral locking portions.

10. 9. The shielded conductive path according to claim 6, wherein the locking protrusion has a shape in which a part of the inner circumferential side locking portion or the outer circumferential side locking portion is bent back.

11. 9. The shielded conductive path according to claim 6, wherein the locking protrusion has a shape formed by cutting and raising a part of the inner circumferential locking portion or the outer circumferential locking portion in a plate thickness direction.

12. 9. The shielded conductive path according to claim 6, wherein the locking protrusion has a shape obtained by bending the inner circumferential locking portion or the outer circumferential locking portion along a circumferential fold.

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