Shield terminal and shielded electric wire connection structure

Abstract

The present application relates to a connection structure of a shield terminal and a shield electric wire, and realizes reliability improvement of a crimp-based fixed installation performance. The connection structure of the shield terminal (10) and the shield electric wire (60) has the shield electric wire (60) having a shield layer (63) and the shield terminal (10) having an outer conductor (20) connected with the shield layer (63), the outer conductor (20) is constituted by assembling a first shell (21) having an electric wire connecting part (30, 31, 32) in contact with the outer periphery of the shield layer (63) and a second shell (22) having a crimping part (44) riveted to the outer periphery of the electric wire connecting part (30, 31, 32), and a hooking part (36) is formed in the electric wire connecting part (30, 31, 32) to hook the outer peripheral surface of the shield layer (63).

Description

Technical Field

[0001] This disclosure relates to a connection structure between a shielded terminal and a shielded wire. Background Technology

[0002] Patent Document 1 discloses a coaxial cable connector comprising a coaxial cable having an outer conductor, an outer conductor terminal having an outer conductor receiving portion, and a cover member having an outer conductor support portion. The outer conductor of the coaxial cable is received within the outer conductor receiving portion of the outer conductor terminal, and the outer conductor receiving portion is received within the outer conductor support portion of the cover member. By crimping the outer conductor support portion, the outer conductor, the outer conductor terminal, and the cover member can be electrically connected.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 9-120870 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] The above structure utilizes only the frictional resistance caused by the crimping force of the outer conductor support to securely mount the outer conductor, outer conductor terminals, and cover components. Therefore, when the coaxial cable is pulled, it may experience relative displacement in the axial direction relative to the outer conductor terminals and cover components.

[0008] The connection structure between the shielded terminal and the shielded wire disclosed herein is based on the above-described situation, and its purpose is to improve the fixed installation performance based on crimping.

[0009] Solution for solving the problem

[0010] The connection structure between the shielded terminal and the shielded wire disclosed herein comprises: a shielded wire having a shielding layer; and a shielded terminal having an outer conductor connected to the shielding layer.

[0011] The outer conductor is constructed by combining a first shell and a second shell. The first shell has a wire connection portion that contacts the outer periphery of the shielding layer, and the second shell has a crimp portion that is riveted to the outer periphery of the wire connection portion.

[0012] A hook portion is formed at the wire connection portion to hook onto the outer peripheral surface of the shielding layer.

[0013] The effects of the invention

[0014] According to this disclosure, it is possible to improve the performance of fixed installation based on crimping. Attached Figure Description

[0015] Figure 1 This is a perspective view of the shielded terminals and shielded wires constituting the connection structure of Embodiment 1, viewed from a slightly rearward and upward angle.

[0016] Figure 2 This is a side sectional view of the shielded terminals and shielded wires.

[0017] Figure 3 This is a three-dimensional view of the state after the second shell has been removed, observed from the upper rear.

[0018] Figure 4 This is a 3D view of the state after the second shell has been removed, observed from the lower rear.

[0019] Figure 5 yes Figure 2 A sectional view along line AA.

[0020] Figure 6 yes Figure 2 BB line section view.

[0021] Figure 7 This is a perspective view of the first shell before it is bent, as seen from the lower rear. Detailed Implementation

[0022] [Description of embodiments of this disclosure]

[0023] First, embodiments of this disclosure will be described.

[0024] The connection structure between the shielded terminal and the shielded wire disclosed herein is configured as follows:

[0025] (1) The device comprises: a shielded wire having a shielding layer; and a shielded terminal having an outer conductor connected to the shielding layer, the outer conductor being constructed by combining a first shell and a second shell, the first shell having a wire connection portion that contacts the outer periphery of the shielding layer, and the second shell having a crimping portion riveted to the outer periphery of the wire connection portion, the wire connection portion having a hook portion that hooks onto the outer peripheral surface of the shielding layer. According to the structure of this disclosure, by hooking onto the outer peripheral surface of the shielding layer with the hook portion, relative displacement between the shielded wire and the outer conductor is prevented, thus improving the reliability of the crimp-based fixed installation performance.

[0026] (2) Preferably, the hook portion is the opening edge of a through hole extending from the outer peripheral surface of the wire connection portion to the inner peripheral surface. According to this structure, the outer peripheral portion of the shielding layer enters the through hole, and the shielding layer is hooked by the hook portion at the opening edge of the through hole. In the forming process of the hook portion, bending processes such as cutting are not required, thus reducing manufacturing costs.

[0027] (3) Preferably, the plurality of said wire connections are arranged at intervals in the circumferential direction. According to this structure, each wire connection is pressed against the outer peripheral surface of the shielding layer by radial displacement independently of the other wire connections, so that the hook can be deeply bitten into the shielding layer.

[0028] (4) Preferably, the crimping portion has a riveting portion that extends cantileveredly from the base plate portion in the circumferential direction, and a fitting protrusion is formed at the protruding end of the riveting portion to fit into the fitting hole of the wire connection portion. According to this structure, the relative displacement between the first shell and the second shell can be prevented by the locking action between the fitting protrusion of the riveting portion and the fitting hole of the wire connection portion.

[0029] (5) Based on (4), preferably, the interlocking protrusion bites into the shielding layer. According to this structure, relative displacement between the crimped portion and the shielding layer can be prevented.

[0030] (6) Preferably, the crimping portion has a riveting portion that extends cantileveredly from the substrate portion in the circumferential direction, the crimping portion being riveted to the outer peripheral portion of the riveting portion in a manner that maximizes deformation, and the hook portion being disposed in the area pressed by the outer peripheral portion of the riveting portion. According to this structure, the hook portion can be effectively engaged with the shielding layer.

[0031] [Detailed Structure of Embodiments of this Disclosure]

[0032] [Example 1]

[0033] Reference Figures 1 to 7 Embodiment 1, which embodies this disclosure, will be described. Furthermore, the invention is not limited to these examples, but refers to all modifications shown in the claims and encompassing the meaning and scope equivalent to the claims. In this embodiment 1, regarding the front-back direction, Figures 1-4 The positive direction of the X-axis is defined as forward. Regarding the left and right directions, [the text continues with further details about the X-axis and forward direction]. Figure 1 , Figures 3-6 The positive direction of the Y-axis is defined as to the right. Regarding the up and down directions, [the following is a separate section:] Figures 1-6 The positive direction of the Z-axis is defined as upward.

[0034] The connection structure of this embodiment 1 includes a shielded terminal 10 and a shielded wire 60. The shielded terminal 10 and the shielded wire 60 are connected conductively by crimping, forming a shielded conductive circuit. Figure 1 , Figure 2 As shown, in a side view of the shielding terminal 10 and the shielded wire 60, the shielding terminal 10 is bent into an L-shape. Figure 2As shown, the shielding terminal 10 is constructed by assembling an inner conductor 11 bent into an L-shape, a dielectric 12 surrounding the inner conductor 11, and an outer conductor 20 surrounding the inner conductor 11 and the dielectric 12. The lower surface of the internal space of the dielectric 12 can be opened and closed by a cover 13. The inner conductor 11 is housed inside the dielectric 12 when the cover 13 is open.

[0035] like Figures 2-4 As shown, the outer conductor 20 is constructed by assembling a first shell 21 made of metallic sheet metal and a second shell 22 made of metallic sheet metal, which is separate from the first shell 21. Before the inner conductor 11 and the dielectric 12 are assembled onto the outer conductor 20, the first shell 21 is formed as follows: Figure 7 The shape shown. The vertical and horizontal directions related to the shape of the first shell 21 are based on, as... Figures 2-4 The state of the inner conductor 11 and the dielectric 12 combined as shown will be explained.

[0036] The first shell 21 is a single component, having a cylindrical portion 23 with its axis pointing vertically and an arcuate portion 24 connected to the lower end of the cylindrical portion 23. The arcuate portion 24 extends downward in a coaxial manner from approximately half a circumference region on the front side of the lower end of the cylindrical portion 23. A plate-shaped protrusion 25 with its thickness direction pointing vertically extends rearward from the rear end side region at the lower edge of the cylindrical portion 23.

[0037] The first shell 21 has a square surrounding portion 26. The square surrounding portion 26 is composed of the aforementioned protrusion 25, a base plate portion 27, and a pair of left and right side plate portions 28. The base plate portion 27 extends rearward from the curved portion 29 at the lower edge of the arcuate portion 24 with its thickness direction facing vertically. The left and right side plate portions 28 extend upward in a wall-like manner from the left and right side edges of the base plate portion 27 with their thickness direction facing horizontally. The side plate portions 28 are arranged in a spaced-apart manner behind the rear end edge of the arcuate portion 24. The protrusion 25 is located above the base plate portion 27.

[0038] The first housing 21 has an upper surface side wire connection portion 30, a lower surface side wire connection portion 31, and a pair of left and right side side wire connection portions 32. These four wire connection portions 30, 31, and 32 are plate-shaped and extend cantileveredly from the rear end of the square enclosure portion 26. The upper surface side wire connection portion 30 is made of a flat plate, arranged with its thickness direction facing vertically, and connected to the rear end of the protrusion portion 25. The lower surface side wire connection portion 31 is made of a curved plate bent into an arc shape, arranged with its thickness direction facing vertically, below the upper surface side wire connection portion 30, and connected to the rear end of the base plate portion 27. The pair of left and right side side wire connection portions 32 are made of curved plates bent into an arc shape, arranged with their thickness direction facing horizontally, and connected to the rear end of the side plate portion 28.

[0039] The four wire connection portions 30, 31, and 32 are arranged as slits 34 spaced apart in the front-to-back direction and are circumferentially arranged around the axis in the front-to-back direction. The four wire connection portions 30, 31, and 32 are arranged in a cylindrical shape. The shielding layer 63 of the shielded wire 60 described below is housed within the space enclosed by the four wire connection portions 30, 31, and 32. The four wire connection portions 30, 31, and 32 are arranged in a non-contact position relative to each other, thus allowing them to be displaced independently of the other wire connection portions 30, 31, and 32 in a radial direction (towards or away from the outer peripheral surface of the shielded wire 60).

[0040] Square through holes 35 are formed at the front ends of the four wire connection portions 30, 31, and 32. All through holes 35 formed in the four wire connection portions 30, 31, and 32 are arranged at the same position in the front-rear direction. The multiple through holes 35 formed in the four wire connection portions 30, 31, and 32 are arranged at intervals in the circumferential direction. One through hole 35 is formed in the upper surface side wire connection portion 30. A pair of through holes 35 spaced apart in the left-right direction (circumferential direction) are formed in the lower surface side wire connection portion 31. A pair of through holes 35 spaced apart in the up-down direction (circumferential direction) are formed in the left and right side wire connection portions 32.

[0041] The aforementioned through holes 35 are all formed into window-like shapes by stamping, extending from the outer surface of the wire connection portions 30, 31, and 32 to the inner surface. The inner surface of the wire connection portions 30, 31, and 32 faces the outer periphery of the shielded wire 60. The opening edge of the through holes 35 in the inner surface of the wire connection portions 30, 31, and 32 is formed into a right-angled edge by stamping, serving as the hook portion 36 (see reference). Figure 5 The functional parts. All edges of the opening edge of the through hole 35 function as hook parts 36.

[0042] A square-shaped fitting hole 37 is formed on the lower surface side wire connection portion 31. The fitting hole 37 is formed into a window shape by stamping, extending from the outer surface of the lower surface side wire connection portion 31 to the inner surface. The fitting hole 37 is positioned rearward than the through hole 35. The opening area of ​​the fitting hole 37 is larger than the opening area of ​​a through hole 35.

[0043] like Figure 4 As shown, the second shell 22 is a single component having a shielding portion 40 and a pressing portion 44. The shielding portion 40 has an upper surface plate portion 41 that faces vertically in the thickness direction and a pair of left and right side plate portions 42 that extend downward from the left and right side edges of the upper surface plate portion 41. The shielding portion 40 has the function of sealing the gap in the square surrounding portion 26 of the first shell 21.

[0044] The crimping portion 44 includes a bobbin portion 45 and an insulating cylinder portion 46. The bobbin portion 45 has a plate-shaped front base 47 extending rearward from the rear end of the upper surface plate portion 41, and a pair of left and right front riveting portions 48 extending downward from the left and right side edges of the plate-shaped front base 47. The insulating cylinder portion 46 has a plate-shaped rear base 49 extending rearward from the rear end of the plate-shaped front base 47, and a pair of left and right rear riveting portions 50 extending downward from the left and right side edges of the plate-shaped rear base 49. An engaging protrusion 51 is formed at the protruding end edge of each of the left and right front riveting portions 48. A positioning protrusion 52 is formed at the protruding end edge of the left rear riveting portion 50, and a positioning recess 53 is formed at the protruding end edge of the right rear riveting portion 50.

[0045] like Figure 5 , Figure 6 As shown, the shielded wire 60 is constructed from a coaxial cable, which includes: a core wire 61; a cylindrical insulating sheath 62 concentrically surrounding the core wire 61; a shielding layer 63 covering the outer periphery of the insulating sheath 62; and a cylindrical sheath 64 surrounding the shielding layer 63. At the front end of the shielded wire 60, the front end of the core wire 61 protrudes forward from the front end face of the insulating sheath 62. At a position slightly rear of the front end of the insulating sheath 62, the sheath 64 is peeled off, exposing the shielding layer 63. The exposed portion of the shielding layer 63 surrounds the outer periphery of the insulating sheath 62. The front end of the exposed portion of the shielding layer 63 is located slightly rear of the front end of the insulating sheath 62. The shielding layer 63 is constructed from braided wire, metal foil, etc., and is flexible or plastic.

[0046] Next, the assembly sequence of the shielding terminal 10 and the connection sequence between the shielding terminal 10 and the shielded wire 60 will be explained. First, the rear end of the inner conductor 11 is fixedly installed to the front end of the core wire 61 of the shielded wire 60. The rear end of the inner conductor 11 and the front end of the shielded wire 60 are arranged in a straight line with their axes pointing in the front-back direction. Next, the first housing 21 is in the... Figure 7 In the state shown, the dielectric 12 is housed inside the cylindrical portion 23 and the arc-shaped portion 24 from below the first shell 21. Next, with the cover 13 open, the front end of the inner conductor 11 is housed inside the dielectric 12, and after the inner conductor 11 is housed, the cover 13 is closed.

[0047] The connection portion between the inner conductor 11 and the core wire 61 is housed within the rear end of the dielectric 12, resulting in a positional relationship where the front end face of the insulating cover 62 and the rear end face of the dielectric 12 are nearly opposite each other in the front-rear direction, or in a state of contact in the front-rear direction. The rear end of the dielectric 12 protrudes rearward from the opening on the rear surface side of the arcuate portion 24. The upper surface of the rear end of the dielectric 12 is covered by the protrusion 25, and the upper surface of the shielding layer 63 is covered by the upper surface side wire connection portion 30. The rear end of the upper surface side wire connection portion 30 is located forward of the front end of the sheath 64.

[0048] Next, the substrate portion 27 is rotated 90° upward and backward around the bending portion 29 as a fulcrum, overlapping with the lower surface of the rear end of the dielectric 12. Through this rotation, the left and right side plates 28 are displaced to cover the left and right outer sides of the rear end of the dielectric 12, forming a square enclosure portion 26 composed of the protruding portion 25, the substrate portion 27, and the side plates 28. The square enclosure portion 26 surrounds the rear end of the dielectric 12 and the connection portion between the inner conductor 11 and the core wire 61.

[0049] By rotating the substrate 27, the lower surface wire connection portion 31 and the left and right side wire connection portions 32 are positioned on the lower surface and left and right side surfaces covering the shielding layer 63. The rear ends of the lower surface wire connection portion 31 and the rear ends of the side wire connection portions 32 are positioned forward of the front end of the sheath 64. The shielding layer 63 is thus surrounded by the four wire connection portions 30, 31, and 32 from the top, bottom, left, and right directions. In the slits 34 between the four wire connection portions, the shielding layer 63 is exposed to the outer peripheral surfaces of the wire connection portions 30, 31, and 32.

[0050] Next, the second shell 22 is assembled from above onto the first shell 21 and the shielded wire 60. During assembly, the shielding part 40 is assembled from above, covering the square enclosure 26, and the crimping part 44 is assembled from above, covering the rear end of the first shell 21 and the front end of the sheath 64. The shielding part 40 covers the gap between the left and right side edges of the protrusion 25 and the upper edge of the left and right side plate parts 28. Thus, the rear end of the dielectric 12 is shielded all around. The coil part 45 in the crimping part 44 covers the shielding layer 63 and the four wire connection parts 30, 31, and 32, and the insulating cylinder part 46 covers the front end of the sheath 64.

[0051] From this state, the crimping portion 44 is crimped onto the shielded wire 60 by riveting the spool portion 45 and the insulating cylinder portion 46 in a manner that reduces their diameter. In the crimped state, the spool portion 45 presses down on the four wire connection portions 30, 31, and 32, causing them to independently shift radially inward and adhere tightly to the outer peripheral surface of the shielding layer 63. Thus, the shielding layer 63 and the outer conductor 20 are electrically connected. The insulating cylinder portion 46 is riveted to the outer peripheral surface of the sheath 64. Thus, the shielding terminal 10 and the shielded wire 60 are held in a electrically connected and fixedly installed state.

[0052] The front end of the spool portion 45 presses more forcefully against the front ends of the wire connectors 30, 31, and 32 than other parts, and presses them forcefully against the outer peripheral surface of the shielding layer 63. The front ends of the wire connectors 30, 31, and 32 that are forcefully riveted to the spool portion 45 are the parts with through holes 35. Therefore, by forcefully pressing the wire connectors 30, 31, and 32 against the outer peripheral surface of the shielding layer 63, a portion of the shielding layer 63 deforms and enters into the through hole 35. The portion of the shielding layer 63 that enters into the through hole 35 is forcefully pressed against the edge-shaped hook portion 36 at the opening edge of the through hole 35, thus creating a hook in the front-back direction and circumferential direction between the shielding layer 63 and the hook portion 36. When the shielding layer 63 is pulled forcefully backward relative to the outer conductor 20, for example, the portion of the shielding layer 63 that enters the through hole 35 is pressed by the hook portion 36, so that the hook portion 36 bites into the outer peripheral surface of the shielding layer 63. Through such hooking and biting, positional displacement (relative displacement in the front-back direction and circumferential direction) between the shielding layer 63 and the wire connection portions 30, 31, and 32 is prevented. In other words, the hooking action of the hook portion 36 increases the fixing force of the crimping portion 44, thereby improving the reliability of the function of keeping the shielding terminal 10 and the shielded wire 60 in a connected state.

[0053] In addition, such as Figure 2 , Figure 6 As shown, the fitting protrusion 51 of the bobbin portion 45 fits into the fitting hole 37, penetrates the shielding layer 63, and bites into the insulating covering portion 62. The fitting protrusion 51, by engaging with the fitting hole 37, restricts the relative displacement in the front-rear direction between the bobbin portion 45 and the lower surface side wire connection portion 31. The fitting protrusion 51, by biting into the insulating covering portion 62, restricts the relative displacement in the front-rear direction (axial direction) and the left-right direction (circumferential direction) between the outer conductor 20 and the shielded wire 60. Thus, the outer conductor 20 and the shielded wire 60 are reliably fixed in place.

[0054] The connection structure of the shielded conductive circuit in this embodiment 1 includes a shielded wire 60 having a shielding layer 63 and a shielded terminal 10 having an outer conductor 20 connected to the shielding layer 63. The outer conductor 20 is constructed by assembling a first shell 21 and a second shell 22. The first shell 21 has wire connection portions 30, 31, and 32 that contact the outer periphery of the shielding layer 63. The second shell 22 has a crimping portion 44 that is riveted to the outer periphery of the wire connection portions 30, 31, and 32. Hook portions 36 are formed on the wire connection portions 30, 31, and 32 that hook onto the outer peripheral surface of the shielding layer 63. By hooking the wire connection portions 30, 31, and 32 onto the outer peripheral surface of the shielding layer 63, relative displacement between the shielded wire 60 and the outer conductor 20 is prevented, thus improving the reliability of the crimp-based fixed installation performance.

[0055] The hook portion 36 extends from the outer peripheral surface of the wire connection portions 30, 31, and 32 to the inner peripheral surface of the through hole 35. The outer peripheral portion of the shielding layer 63 enters the through hole 35, and the shielding layer 63 hooks onto the hook portion 36 at the opening edge of the through hole 35. Furthermore, the forming process of the hook portion 36 does not require bending processes such as cutting, thus reducing manufacturing costs.

[0056] Furthermore, when the wire connection is a cylindrical section connected circumferentially, the radial deformation of the wire connection is insufficient, or the deformation is uneven in different parts of the circumferential direction, making it impossible to forcefully press the hook portion against the outer peripheral surface of the shielding layer 63. As a countermeasure, multiple wire connections 30, 31, and 32 are arranged circumferentially at intervals. With this structure, each wire connection 30, 31, and 32 can move radially independently of the other wire connections 30, 31, and 32. That is, the radial displacement of each wire connection 30, 31, and 32 is not restricted by the presence of other wire connections 30, 31, and 32. Therefore, the hook portion 36 of each wire connection 30, 31, and 32 can be forcefully pressed against the outer peripheral surface of the shielding layer 63, causing it to deeply hook onto the shielding layer 63.

[0057] The crimping portion 44 has a front riveting portion 48 that extends cantileveredly from the substrate portion 27 in the circumferential direction. A fitting protrusion 51 is formed at the protruding end of the front riveting portion 48 that engages with the fitting hole 37 of the lower surface side wire connection portion 31. According to this structure, the locking action between the fitting protrusion 51 of the front riveting portion 48 and the fitting hole 37 of the lower surface side wire connection portion 31 prevents relative displacement between the first shell 21 and the second shell 22. Since the fitting protrusion 51 engages with the shielding layer 63, relative displacement between the crimping portion 44 and the shielding layer 63 is also prevented.

[0058] The crimping portion 44 has a front riveting portion 48 that extends cantileveredly from the substrate portion 27 in the circumferential direction. The crimping portion 44 is riveted to the front end of the outer peripheral portion of the front riveting portion 48 in a manner that maximizes deformation. The hook portion 36 is disposed in the area pressed by the front end of the front riveting portion 48, i.e., the front end of the wire connection portions 30, 31, and 32. According to this structure, the hook portion 36 can be effectively hooked onto the shielding layer 63.

[0059] [Other Embodiments]

[0060] This invention is not limited to the embodiments described above and the accompanying drawings, but is illustrated by the claims. The invention is intended to encompass all modifications equivalent to and within the scope of the claims, and also includes the following embodiments.

[0061] The hook can also be formed by cutting or knocking out.

[0062] The wire connection can also be a cylindrical part that is connected without interruption in the circumference.

[0063] The wire connection may also not have a fitting hole.

[0064] Alternatively, a method can be adopted that prevents the interlocking protrusions from biting into the shielding layer.

[0065] The hook portion can be positioned in the area corresponding to the rear edge or side edge of the front riveting portion, or it can be positioned in the area offset from the outer periphery of the front riveting portion, that is, in the area corresponding to the center of the front riveting portion.

[0066] Explanation of reference numerals in the attached figures

[0067] 10…Shielded Terminals

[0068] 11…Inner conductor

[0069] 12…Dielectric

[0070] 13…Cover

[0071] 20…outer conductor

[0072] 21…First Shell

[0073] 22…Second Shell

[0074] 23…Cylindrical section

[0075] 24…arc section

[0076] 25…protruding part

[0077] 26…Square Enclosure

[0078] 27…Substrate part

[0079] 28…Side panel section

[0080] 29…bend

[0081] 30… Upper surface side wire connection part (wire connection part)

[0082] 31… Lower surface side wire connection part (wire connection part)

[0083] 32… Side wire connection part (wire connection part)

[0084] 34…slit

[0085] 35… Through hole

[0086] 36…Hook and Hanging Part

[0087] 37…fitting hole

[0088] 40…Shelter

[0089] 41… Upper surface plate

[0090] 42…Side panel

[0091] 44…Crimping section

[0092] 45…Bowl section

[0093] 46…Insulating cylinder section

[0094] 47…plate-like anterior base

[0095] 48…Front side riveting section (riveting section)

[0096] 49…plate-like posterior base

[0097] 50…Rear Riveting Part

[0098] 51…fitting protrusion

[0099] 52…Location of the protrusion

[0100] 53…Location recess

[0101] 60… shielded wire

[0102] 61…core wire

[0103] 62…Insulation Covering Section

[0104] 63…Shielding layer

[0105] 64…Sheath

Claims

1. A shield terminal and shielded electric wire connection structure, wherein a shielded electric wire having a shield layer is provided, and a shield terminal having an outer conductor connected to the shield layer is provided, the outer conductor is configured by combining a first shell having a plurality of wire connection portions that contact an outer periphery of the shield layer and a second shell having a crimp portion that is crimped to an outer periphery of the wire connection portions, a hooking portion that hooks an outer peripheral surface of the shield layer is formed in the wire connection portion, the hooking portion is an opening edge of a through-hole that penetrates from an outer peripheral surface to an inner peripheral surface of the wire connection portion, a plurality of the wire connection portions are arranged side by side in a circumferential direction centered on an axis with a slit extending in an axial direction interposed therebetween, the through-hole is formed in a front end portion of each of the wire connection portions, the crimp portion is crimped to the outer periphery of the wire connection portion in a manner that covers each of the through-holes.

2. The shield terminal and shielded electric wire connection structure according to claim 1, wherein the crimp portion has a crimping portion that protrudes in a cantilevered manner from a base portion in the circumferential direction, a fitting protrusion that fits into a fitting hole of the wire connection portion is formed in a protruding end portion of the crimping portion.

3. The shield terminal and shielded electric wire connection structure according to claim 2, wherein the fitting protrusion is bitten into the shield layer.

4. The shield terminal and shielded electric wire connection structure according to any one of claims 1 to 3, wherein the crimp portion has a crimping portion that protrudes in a cantilevered manner from a base portion in the circumferential direction, the crimp portion is crimped to an outer edge portion of the crimping portion in a manner that has the largest amount of deformation, the hooking portion is arranged in a region that is pressed by the outer edge portion of the crimping portion.

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