WO2024085126A1

WO2024085126A1 - Shielded electric wire and connector

Info

Publication number: WO2024085126A1
Application number: PCT/JP2023/037478
Authority: WO
Inventors: 貴大長谷川; 豊小林
Original assignee: 住友電装株式会社
Priority date: 2022-10-18
Filing date: 2023-10-17
Publication date: 2024-04-25
Also published as: JP2024059341A

Abstract

The present disclosure provides: a shielded electric wire including a shielding structure which can be satisfactorily connected to a mating connector; and a connector. A shielded electric wire (2) according to one embodiment of the present disclosure includes a shielding material (12) for noise blocking provided to the peripheral surface of an electric wire (21) to be electrically connected to a mating connector via an electrical terminal (14). The shielded electric wire (2) is equipped with a tubular shielding structure (15). The shielding structure (15) has: an electric-wire-fitted part (37) fixed to the shielding material (12) by press fitting; and a shield connection part (38) which touches a GND terminal of the mating connector when the electrical terminal (14) is electrically connected to the mating connector. The electric-wire-fitted part (37) has crush-thrusted portions (46) for inhibiting the shield connection part (38) from deforming when the electric-wire-fitted part (37) is press-fitted to the shielding material (12).

Description

Shielded wire and connectors

The present invention relates to a shielded wire and a connector.

As disclosed in Patent Document 1, a shielded electric wire in which a cylindrical metal shell is electrically connected to the braid of an electric wire is well known. The braid is exposed from a sheath that covers an insulated core wire, and the exposed portion is folded back. The metal shell is then fixed to the braid by crimping it onto the folded back portion of the braid.

Japanese Patent Application Laid-Open No. 8-250218

When the shielded electric wire is attached to the connection destination, the tip of the metal shell opposite the part crimped to the braid is electrically connected to the GND terminal of the connection destination. However, when the metal shell is crimped and fixed to the braid, the crimping stress is transmitted to the tip side of the metal shell, which can cause the tip of the metal shell to expand radially outward, resulting in deformation into a trumpet shape. In this case, the diameter of the tip of the metal shell is not the desired shape, which can cause problems with the connection between the tip of the metal shell and the connection destination of the shielded electric wire.

The objective of this disclosure is to provide a shielded wire and connector that can effectively connect a shield to a mating connector.

The shielded electric wire that solves the above problem is configured such that a shielding material that blocks noise is provided on the outer surface of an electric wire material that is electrically connected to a mating connector via an electrical terminal, and is equipped with a cylindrical shielding body having an electric wire crimping portion that is fixed to the shielding material by crimping, and a shield connection portion that touches the GND terminal of the mating connector when the electrical terminal is electrically connected to the mating connector, and the electric wire crimping portion has a crushing protrusion that suppresses deformation of the shield connection portion when the electric wire crimping portion is crimped to the shielding material.

The connector that solves the above problem is configured to include a shielded electric wire in which a shielding material that blocks noise is provided on the outer surface of the electric wire material that is electrically connected to a mating connector via an electric terminal, a connector housing that is attached to the connection destination of the shielded electric wire, and a cap that covers the electric terminal, the shielded electric wire has a cylindrical shielding body that has an electric wire crimping portion that is fixed to the shielding material by crimping, and a shield connection portion that touches the GND terminal of the mating connector when the electric terminal is electrically connected to the mating connector, and the electric wire crimping portion has a crushing protrusion that suppresses deformation of the shield connection portion when the electric wire crimping portion is crimped to the shielding material.

This disclosure allows the shield to be successfully connected to the mating connector.

FIG. 1 is a perspective view of a connector according to an embodiment. FIG. 2 is a schematic diagram showing a mating connector to which the connector is connected. FIG. 3 is an exploded perspective view of the assembled wire. FIG. 4 is an exploded perspective view of the connector. FIG. 5 is a cross-sectional view taken along line VV shown in FIG. FIG. 6 is a side view of the shield. FIG. 7 is a rear view of the shield. FIG. 8 is a cross-sectional view taken along line VIII-VIII shown in FIG. FIG. 9 is a perspective view of the cap as seen from behind. FIG. 10 is a cross-sectional side view showing the shielded wire before the shield is crimped. FIG. 11 is a cross-sectional view showing the shielded wire before the shield is crimped. FIG. 12 is an enlarged side cross-sectional view showing the shape of the electric wire crimped portion after crimping.

First, the embodiments of the present disclosure will be listed and described.
[1] The shielded electric wire disclosed herein has a configuration in which a shielding material for shielding noise is provided on the outer peripheral surface of an electric wire material that is electrically connected to a mating connector via an electric terminal, and the shielding material has a cylindrical shielding body having an electric wire crimping portion that is fixed to the shielding material by crimping, and a shield connection portion that comes into contact with a GND terminal of the mating connector when the electric terminal is electrically connected to the mating connector, and the wire crimping portion has a crushing protrusion that suppresses deformation of the shield connection portion when the wire crimping portion is crimped to the shielding material.

According to the configuration of this example, when the wire crimping portion of the shielding body is crimped to the shielding material of the shielded wire, unnecessary deformation of the shielding body caused by the crimping force can be avoided by the deformation of the crushing protrusion. In other words, when the wire crimping portion is crimped, the crushing protrusion itself is crimped and deformed, making it difficult for the deformation to be transmitted to other parts of the shielding body. This makes it difficult for deformation to occur in the shield connection portion of the shielding body. This makes it possible to maintain the shape of the shield connection portion of the shielding body that connects to the GND terminal of the mating connector in an optimal shape. This makes it possible to connect the shielding body to the mating connector well.

[2] In the above [1], the crushing protrusion is one of a plurality of crushing protrusions, and the plurality of crushing protrusions are provided at different positions in the circumferential direction of the shield. With this configuration, it is possible to deform the shield in a balanced manner when the shield is crimped. This contributes to suppressing deformation of the shield connection portion.

[3] In the above [1] or [2], the shield has a first region that is a specified range in the circumferential direction of the shield, and a second region that faces the first region in the diameter direction of the shield, and the crushed protrusion is one of a plurality of crushed protrusions, and the plurality of crushed protrusions are arranged in each of the first region and the second region. With this configuration, for example, when the shield is sandwiched between upper and lower dies to crimp the crushed protrusions, if the crushed protrusion in the first region is crushed at the center of one die and the crushed protrusion in the second region is crushed at the center of the other die, the crushed protrusion will not be crushed at a location where the crushing load of the die is unlikely to be applied. Therefore, it is possible to reduce the occurrence of crushed protrusions that are insufficiently crimped.

[4] In any of [1] to [3] above, the crushing protrusion is formed in a shape that protrudes from the wire crimping portion so as to have a space inside before deformation. With this configuration, it is possible to make the crushing protrusion into a shape that is easy to crush, which makes it possible to improve the workability of the crimping process.

[5] In any of the above [1] to [4], the shield connection portion has a leaf spring portion on the outer peripheral surface of the shield that contacts the GND terminal. With this configuration, even if the shield is fixed to the shielding material by crimping, the position of the leaf spring portion is unlikely to be affected. This makes it possible to bring the leaf spring portion into contact with the GND terminal with optimal tension. This further contributes to a good connection of the shield to the mating connector.

[6] In any of the above [1] to [5], the shielding material has a folded portion formed by folding back an end of the shielding material, and the electric wire crimping portion is crimped to the folded portion. With this configuration, it is possible to crimp and fix the shielding body to the folded portion of the shielding material, which is easy to crimp.

[7] In the above [6], the shielded electric wire has a ring member on the inside of the folded portion that sandwiches and holds the folded portion together with the electric wire crimping portion. With this configuration, it is possible to firmly fix the shield to the shielding material by using the ring member as a seat.

[8] In the above [1] to [7], the shield has an engagement portion that engages with the connector housing when attached to the connector housing that is mated with the mating connector so as not to come off from the connector housing. With this configuration, the shield can be held in the connector housing by the engagement portion, making it difficult for the shield to come off from the connector housing.

[9] In any of the above [1] to [8], the shield has a positioning portion that positions the shield in the insertion direction into the connector housing when the shield is attached to the connector housing that is to be mated with the mating connector. With this configuration, the shield can be positioned in the insertion direction relative to the connector housing, making it possible to place the shield in an optimal mounting position.

[10] In any of the above [1] to [9], the electrical terminal has a terminal body to which the mating connector terminal of the mating connector is connected and a terminal end portion fixed to the electric wire, the terminal body being exposed to the outside of the shielding body, and the terminal end portion being housed inside the shielding body. With this configuration, it is possible to make the shape of the shielding body short and short, covering only the periphery of the end portion of the electrical terminal.

[11] The connector of the present disclosure is configured to include a shielded electric wire having a noise-shielding shielding material provided on the outer peripheral surface of the electric wire material electrically connected to a mating connector via an electric terminal, a connector housing attached to the connection destination of the shielded electric wire, and a cap covering the electric terminal, the shielded electric wire includes a cylindrical shielding body having an electric wire crimping portion fixed to the shielding material by crimping, and a shield connection portion that touches the GND terminal of the mating connector when the electric terminal is electrically connected to the mating connector, and the electric wire crimping portion has a crushed protrusion that suppresses deformation of the shield connection portion when the electric wire crimping portion is crimped to the shielding material. With this configuration, the same effect as that of a shielded electric wire can be obtained.

[Details of the embodiment of the present disclosure]
Specific examples of the present disclosure will be described below with reference to the drawings. Note that the present invention is not limited to these examples, but is indicated by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims. In each drawing, for convenience of explanation, some of the configurations may be exaggerated or simplified. In addition, the dimensional ratios of each part may differ from the actual ones.

(Wire harness 1)
As shown in Fig. 1, the wire harness 1 includes a shielded electric wire 2 and a connector 3 for attaching the shielded electric wire 2 to a connection destination. The connector 3 includes a connector housing 4, a cap 5 attached to the tip of the shielded electric wire 2, and a cover 6 for covering the rear surface of the connector housing 4. The connector housing 4 has a tube portion 7 for inserting the shielded electric wire 2, and a plate-like portion 8 fixed to the connection destination. The plate-like portion 8 is fixed to the connection destination by a plurality of fasteners 9 (two are shown in Fig. 1). The fasteners 9 are, for example, bolts.

In this example, multiple shielded electric wires 2 are arranged side by side. In this example, two shielded electric wires 2 are arranged, one on the positive terminal side and one on the negative terminal side. Both shielded electric wires 2 have the same structure, so only the shielded electric wire 2 on one side will be described. A cap 5 and a cover 6 are provided on each shielded electric wire 2. The cap 5 is formed, for example, in a substantially cylindrical shape. The cover 6 is formed, for example, in a shape that holds the shielded electric wire 2 while allowing the shielded electric wire 2 to be pulled out from the back surface of the tube portion 7 of the connector housing 4. The cover 6 is fixed to the connector housing 4, for example, by a locking structure.

(Shielded wire 2)
3 and 4, the shielded electric wire 2 includes an electric wire body 13 having a shielding material 12 for shielding noise, an electric terminal 14 attached to the tip of the electric wire body 13, and a cylindrical shielding body 15 for connecting the shielding material 12 to GND. The shielded electric wire 2 is attached to the connector housing 4 by being inserted into a hole 16 (see FIG. 4) of the cylindrical portion 7.

As shown in FIG. 3, the shielded electric wire 2 (electric wire body 13) includes an electric wire material 21 having a core wire 19 and an insulating coating 20. The electric wire material 21 has, for example, a core wire 19 made of a conductor and an insulating coating 20 that covers the outer circumference of the core wire 19. The electric wire material 21 is, for example, a high-voltage electric wire that can handle high voltages and large currents.

The core wire 19 is, for example, a twisted wire made by twisting together multiple metal wires, or a single-core wire made of a single columnar metal rod with a solid internal structure. The core wire 19 may also be a combination of multiple types of conductors, such as twisted wires and single-core wires. The material for the core wire 19 is, for example, a copper-based or aluminum-based metal material.

The insulating coating 20, for example, covers the entire outer surface of the core wire 19. The insulating coating 20 is made of an insulating material such as a synthetic resin. The material for the insulating coating 20 is, for example, a synthetic resin whose main component is a polyolefin resin such as cross-linked polyethylene or cross-linked polypropylene. The material for the insulating coating 20 may be one type of material alone, or two or more types of materials may be appropriately combined.

The shielding material 12 is, for example, a braid (braided wire) formed by bundling thin metal wires into a braid. The shielding material 12 has a folded portion 22 formed by folding back the shielding material 12 at the end of the shielding material 12. A covering material 23 that covers the electric wire material 21 from all sides is provided on the outer peripheral surface of the shielding material 12. The covering material 23 is, for example, a protective covering made of resin.

(Mating connector 26)
As shown in Fig. 2, the connector 3 (connector housing 4) is fitted into a mating connector 26 to which the wire harness 1 is connected. For example, when the connector 3 is a male connector, the mating connector 26 is a female connector. The mating connector 26 has a mating connector terminal 27 to be connected to the electrical terminal 14. A GND terminal 28 that is grounded to GND is provided inside the mating connector 26. The GND terminal 28 is, for example, a plate-shaped electrical contact provided on the inner peripheral surface of the mating connector 26.

(Shape of Electrical Terminal 14)
5, the electrical terminal 14 has a terminal body 30 to which a mating connector terminal 27 of a mating connector 26 is connected, and a terminal end 31 fixed to the wire body 13. The terminal body 30 is exposed to the outside of the shielding body 15. The terminal end 31 is housed inside the shielding body 15. In this example, the electrical terminal 14 has the terminal body 30 formed in a cylindrical shape and the terminal end 31 formed in a flat plate shape. When the cap 5 is attached, the electrical terminal 14 is housed inside the cap 5. In this manner, the cap 5 covers the electrical terminal 14.

(Sealing structure of connector 3)
4 and 5, the connector housing 4 is provided with a first seal member 33 that seals the gap between the connector housing 4 and the mating connector 26. The first seal member 33 is, for example, a rubber seal. The first seal member 33 is attached, for example, to the outer periphery of the portion of the cylindrical portion 7 where the cap 5 is inserted.

A second seal member 34 is provided between the shielded electric wire 2 and the connector housing 4 to seal the gap between them. The second seal member 34 is, for example, a rubber seal. The second seal member 34 is, for example, disposed between the outer peripheral surface of the shielded electric wire 2 and the inner peripheral surface of the tube portion 7.

(Shielding body 15)
3 to 6, the shield 15 has an electric wire crimping portion 37 that is fixed to the shielding material 12 by crimping, and a shield connection portion 38 that comes into contact with the GND terminal 28 of the mating connector 26 when the electric terminal 14 is electrically connected to the mating connector 26. The shield 15 is formed, for example, in a substantially cylindrical shape, and has a hole 15a for passing the tip of the electric wire main body 13 and the electric terminal 14 therethrough.

The shield connection portion 38 has a leaf spring portion 39 on the outer peripheral surface of the shield 15 that contacts the GND terminal 28. A plurality of leaf spring portions 39 are provided, and are arranged at equal intervals in the circumferential direction of the shield 15. The leaf spring portion 39 is formed, for example, in a cantilever shape, and has a circular protruding contact that contacts the GND terminal 28. The shield 15 is formed with a protrusion portion 39a that can come into contact with the back surface of the leaf spring portion 39. The protrusion portion 39a is formed by cutting out a part of the shield 15 and bending the cut-out portion.

The shield 15 has an engagement portion 40 that engages with the connector housing 4 to prevent it from coming out of the connector housing 4 when attached to the connector housing 4 that is mated with the mating connector 26. A plurality of engagement portions 40 (two in this example) are provided on the outer peripheral surface of the shield 15. The pair of engagement portions 40 are disposed opposite each other in the diametrical direction of the shield 15. The engagement portions 40 are formed, for example, in a protruding shape with a slope that slopes downward in the direction in which the shield 15 is inserted into the connector housing 4 (the +X-axis direction shown in Figure 3).

The shield 15 has positioning portions 41 that position the shield 15 in the insertion direction into the connector housing 4 (the +X-axis direction shown in FIG. 3) when the shield 15 is attached to the connector housing 4 that is mated with the mating connector 26. Multiple positioning portions 41 (two in this example) are provided on the outer circumferential surface of the shield 15. The pair of positioning portions 41 are disposed opposite each other in the diametrical direction of the shield 15. The positioning portions 41 are formed, for example, in a protruding shape with a slope that rises in the direction in which the shield 15 is inserted into the connector housing 4 (the +X-axis direction shown in FIG. 3).

As shown in FIG. 7, the multiple leaf spring portions 39 are arranged at 90 degree intervals in the circumferential direction of the shielding body 15. The engagement portion 40 is arranged at a position 45 degrees away in the circumferential direction from the leaf spring portion 39 located adjacent to the shielding body 15 in the circumferential direction. The positioning portion 41 is arranged at a position 45 degrees away in the circumferential direction from the leaf spring portion 39 located adjacent to the shielding body 15 in the circumferential direction. The engagement portions 40 and the positioning portions 41 are arranged alternately at 90 degree intervals in the circumferential direction of the shielding body 15.

As shown in FIG. 8, the connector housing 4 is formed with a protrusion 43 that engages with the engagement portion 40 of the shield 15. The protrusion 43 is formed, for example, on the inner circumferential surface of the hole 16 of the tubular portion 7. The engagement portion 40 engages with the protrusion 43, thereby preventing the shield 15 from slipping out of the connector housing 4. The connector housing 4 is formed with a protrusion 44 that engages with the positioning portion 41 of the shield 15. The protrusion 44 is formed, for example, on the inner circumferential surface of the hole 16 of the tubular portion 7. The positioning portion 41 comes into contact with the protrusion 44, thereby setting the position of the shield 15 when it is inserted into the connector housing 4.

(Crimping structure using crushing protrusion 46)
3 to 7 , the wire crimping portion 37 has a plurality of crushing protrusions 46 that suppress deformation of the shield connection portion 38 when the wire crimping portion 37 is crimped to the shielding material 12. In this example, the shielding body 15 is fixed to the shielding material 12 by crimping the wire crimping portion 37 (including the crushing protrusions 46) to the shielding material 12 by crimping or the like. The crushing protrusions 46 deform and attach to the shielding material 12 during crimping. The crushing protrusions 46 are formed at a plurality of different positions in the circumferential direction of the shielding body 15. The wire crimping portion 37 is crimped to the folded portion 22.

As shown in FIG. 7, the shielding body 15 has a first region E1, which is a specified range in the circumferential direction of the shielding body 15, and a second region E2, which faces the first region E1 in the diameter direction of the shielding body 15. The first region E1 is, for example, a portion near the top of the shielding body 15 when viewed from the axial direction (near 0 o'clock on a clock). The second region E2 is, for example, a portion near the bottom of the shielding body 15 when viewed from the axial direction (near 6 o'clock on a clock). A plurality of crushing protrusions 46 (three each in this example) are arranged in each of the first region E1 and the second region E2. Before deformation, the crushing protrusions 46 are formed in a shape that protrudes from the wire crimping portion 37 so as to have a space inside.

As shown in Figures 3 and 5, the shielded electric wire 2 includes a ring member 47 that serves as a seat when the shielding body 15 is crimped to the shielding material 12. The ring member 47 is made of, for example, metal. A flange 48 (shown in Figure 5) that is hooked onto the end of the coating material 23 is formed at the base end of the ring member 47. The ring member 47 is disposed inside the folded portion 22 on the outer circumferential surface of the coating material 23 of the shielding material 12, and clamps and holds the folded portion 22 together with the electric wire crimping portion 37.

(Function of Cap 5)
9 , the cap 5 has a cap body 50 that houses the electric terminal 14 of the shielded wire 2, and an outer peripheral wall 51 that is disposed at a predetermined distance from the cap body 50. The cap body 50 is formed, for example, in a cylindrical shape. The outer peripheral wall 51 is formed in a circumferential shape around the cap body 50. When the shield 15 is attached to the connector housing 4, it is inserted into a gap 52 between the cap body 50 and the outer peripheral wall 51.

As shown in FIG. 5, the outer wall 51 of the cap 5 has a hole 53 that exposes the leaf spring portion 39 of the attached shield 15 to the outside. The outer surface of the cap body 50 has a protrusion 54 for engaging with the shield 15. The shield 15 has a recess 55 for engaging with the protrusion 54. The recess 55 is, for example, a through hole. When the cap 5 is attached to the shield 15, the cap body 50 is disposed between the electrical terminal 14 and the shield 15, thereby insulating them.

(Operation of the embodiment)
Next, the operation of the connector 3 of this embodiment will be described.
As shown in Fig. 10 and Fig. 11 , first, the shield 15 is fixed to the wire body 13 by crimping. In this example, the periphery (crimping area Ea shown by the dotted line in Fig. 10 and Fig. 11 ) of the wire crimping portion 37 (including the crushing protrusion 46) is clamped and crimped with a die to crimp the wire crimping portion 37. For example, a crimping process using a press die is used to crimp the wire crimping portion 37.

When using press working, for example, the wire crimping portion 37 is sandwiched between a pair of dies with arc-shaped pressing surfaces. At this time, one of the dies crushes the crushed protrusions 46 in the first area E1, while the other die crushes the crushed protrusions 46 in the second area E2. The crushed protrusions 46 in the first area E1 and the second area E2 are crushed at the center of the dies (center of the arc surface) where the press pressure is high. This makes it possible to firmly crush and deform these crushed protrusions 46 under high load.

As shown in FIG. 12, when the electric wire crimping portion 37 is crimped, the electric wire crimping portion 37 is crimped by the crimping force, and the electric wire crimping portion 37 is deformed so as to be concave. At this time, unnecessary deformation of the shield 15 due to the crimping force is released by the crushing protrusion 46 being crushed. In this way, when the electric wire crimping portion 37 is crimped, the crushing protrusion 46 itself is crimped and deformed, making it possible to make it difficult for the deformation to be transmitted to other parts of the shield 15. This makes it difficult for deformation to occur in the shield connection portion 38 of the shield 15. This makes it possible to maintain the shape of the shield connection portion 38 in an optimal shape. This makes it possible to connect the shield 15 to the mating connector 26 well.

After the shielding body 15 is attached to the wire body 13 to produce the shielded electric wire 2, the shielded electric wire 2 is attached to the connector housing 4. Specifically, the shielded electric wire 2 is inserted into the hole 16 of the connector housing 4. The insertion is continued until the positioning portion 41 contacts the protrusion 44 of the connector housing 4. Furthermore, when the shielded electric wire 2 is inserted all the way into the hole 16, the engagement portion 40 gets caught on the protrusion 43 to prevent it from coming out. This fixes the shielding body 15, i.e., the shielded electric wire 2, to the connector housing 4.

Next, the cap 5 is attached to the shielded electric wire 2 attached to the connector housing 4. At this time, the cap 5 is attached to the shielded electric wire 2 by inserting the shielding body 15 into the gap 52. This insertion is performed until the projection 54 of the cap 5 engages with the recess 55 of the shielding body 15 while the leaf spring portion 39 of the shielding body 15 is positioned within the hole 53 of the cap 5. In this manner, the connector 3 is assembled.

(Effects of the embodiment)
According to the connector 3 of the above embodiment, the following effects can be obtained.
(1) The shielded electric wire 2 has a shielding material 12 for shielding noise provided on an outer peripheral surface of an electric wire material 21 that is electrically connected to a mating connector 26 via an electric terminal 14. The shielded electric wire 2 includes a cylindrical shielding body 15. The shielding body 15 has an electric wire crimping portion 37 that is fixed to the shielding material 12 by crimping, and a shield connection portion 38 that comes into contact with the GND terminal 28 of the mating connector 26 when the electric terminal 14 is electrically connected to the mating connector 26. The electric wire crimping portion 37 has a crushing protrusion 46 that suppresses deformation of the shield connection portion 38 when the electric wire crimping portion 37 is crimped to the shielding material 12.

According to the configuration of this example, when the wire crimping portion 37 of the shielding body 15 is crimped to the shielding material 12 of the shielded electric wire 2, unnecessary deformation of the shielding body 15 due to the crimping force can be avoided by the deformation of the crushing protrusion 46. In other words, when the wire crimping portion 37 is crimped, the crushing protrusion 46 itself is crimped and deformed, making it difficult for the deformation to be transmitted to other parts of the shielding body 15. This makes it difficult for deformation to occur in the shield connection portion 38 of the shielding body 15. Therefore, it is possible to maintain the shape of the shield connection portion 38, which is connected to the GND terminal 28 of the mating connector 26 in the shielding body 15, in an optimal shape. Therefore, the shielding body 15 can be well connected to the mating connector 26.

(2) The multiple crushing protrusions 46 are formed at different circumferential positions of the shield 15. This configuration makes it possible to deform the shield 15 in a balanced manner when the shield 15 is crimped. This contributes to suppressing deformation of the shield connection portion 38.

(3) The shielding body 15 has a first region E1, which is a specified range in the circumferential direction of the shielding body 15, and a second region E2, which faces the first region E1 in the diameter direction of the shielding body 15. A plurality of crushing protrusions 46 are arranged in each of the first region E1 and the second region E2. With this configuration, for example, when the shielding body 15 is sandwiched between upper and lower molds to crimp the crushing protrusions 46, the crushing protrusions 46 of the first region E1 are crushed at the center of one mold, and the crushing protrusions 46 of the second region E2 are crushed at the center of the other mold, so that the crushing protrusions 46 are not crushed at a location where the crushing load of the mold is unlikely to be applied. Therefore, it is possible to reduce the occurrence of crushing protrusions 46 that are insufficiently crimped.

(4) Before deformation, the crushing protrusion 46 is formed in a shape that protrudes from the wire crimping portion 37 so that there is a space inside. This configuration makes it possible to form the crushing protrusion 46 in a shape that is easy to crush, improving the workability of the crimping process.

(5) The shield connection portion 38 has a leaf spring portion 39 on the outer peripheral surface of the shield 15 that contacts the GND terminal 28. With this configuration, even if the shield 15 is fixed to the shielding material 12 by crimping, the position of the leaf spring portion 39 is unlikely to be affected. This makes it possible to bring the leaf spring portion 39 into contact with the GND terminal 28 with optimal tension. This further contributes to a good connection of the shield 15 to the mating connector 26.

(6) The shielding material 12 has a folded portion 22 formed by folding back an end of the shielding material 12. The wire crimping portion 37 of the shielding body 15 is crimped to the folded portion 22 of the shielding material 12. With this configuration, the shielding body 15 can be crimped and fixed to the folded portion 22 of the shielding material 12, which is easy to crimp.

(7) The shielded electric wire 2 includes a ring member 47 disposed inside the folded portion 22. The ring member 47, together with the electric wire crimping portion 37, clamps and holds the folded portion 22. With this configuration, the ring member 47 serves as a seat to tightly fix the shielding body 15 to the shielding material 12.

(8) When the shield 15 is attached to the connector housing 4 that is mated with the mating connector 26, the shield 15 has an engagement portion 40 that engages with the connector housing 4 so as not to come off from the connector housing 4. With this configuration, the shield 15 can be held in the connector housing 4 by the engagement portion 40, making it difficult for the shield 15 to come off from the connector housing 4.

(9) The shield 15 has a positioning portion 41 that positions the shield 15 in the insertion direction into the connector housing 4 when the shield 15 is attached to the connector housing 4 that is mated with the mating connector 26. With this configuration, the shield 15 can be positioned relative to the connector housing 4 in the insertion direction, so the shield 15 can be placed in the optimal mounting position.

(10) The electrical terminal 14 has a terminal body 30 to which the mating connector terminal 27 of the mating connector 26 is connected, and a terminal end 31 fixed to the electric wire 21. The terminal body 30 is exposed to the outside of the shielding body 15. The terminal end 31 is housed inside the shielding body 15. With this configuration, the shape of the shielding body 15 can be made short so as to cover only the periphery of the end of the electrical terminal 14.

Other Embodiments
This embodiment can be modified as follows: This embodiment and the following modifications can be combined with each other to the extent that no technical contradiction occurs.

The folded portion 22 may be omitted in the shielded electric wire 2 , and the shield 15 may be crimped to a non-folded portion of the shielding material 12 exposed from the covering material 23 in the shielded electric wire 2 .
The ring member 47 may be omitted from the shielded wire 2 .

The shielding material 12 is not limited to a braid, and may be another material, such as a pipe material (pipe shield).
The shape of the crushed protrusion 46 when viewed from the direction perpendicular to the axis of the shield 15 is not limited to a straight line. For example, the shape of the crushed protrusion 46 when viewed from the direction perpendicular to the axis of the shield 15 may be changed to another shape such as a curved shape or a dot shape.

The shape of the crushing protrusion 46 when the shield 15 is viewed in the axial direction is not limited to a semicircular shape, and may be changed to another shape, such as a triangular shape or a trapezoidal shape.
The crushing protrusion 46 is not limited to being formed on only a portion of the outer circumferential surface of the shield 15 . For example, the crushing protrusion 46 may be formed on the entire circumferential direction of the outer circumferential surface.

The crushing protrusion 46 may be configured by combining different protrusion shapes.
The crushing protrusion 46 may be only one.
The electrical terminal 14 may be located entirely inside the shield 15 .

The leaf spring portion 39 is not limited to a cantilever spring and may be changed to another type of spring, such as a disc spring or a spiral spring.
The number of leaf spring portions 39 may be only one.

- The shapes of the engagement portion 40 and the positioning portion 41 can be changed to various shapes as long as they can engage with the connector 3 (connector housing 4). In addition, the number and arrangement positions of the engagement portion 40 and the positioning portion 41 are not limited to those in the embodiment, and may be changed as appropriate.

The connector 3 is not limited to being used in a vehicle and may be used in other devices or equipment.
Each of the collapsible protrusions 46 in the illustrated embodiment may be referred to as a radially inwardly-collapsible, radially-outward protrusion or a radially inwardly-collapsible U-shaped fold. In the illustrated embodiment, a group of the collapsible protrusions 46 arranged in each local region (first region E1 or second region E2) of the cylindrical shield 15 may be referred to as a subset of radially inwardly-collapsible, axially-elongated protrusions. The collapsible protrusions 46 arranged in each local region (first region E1 or second region E2) of the cylindrical shield 15 may be parallel to each other and may extend, for example, along the axis of the cylindrical shield 15.

In the illustrated embodiment, the shield 15 may be configured such that when the wire crimping portion 37 is crimped by the multiple crushing protrusions 46, only the wire crimping portion 37 in the shield 15 can undergo plastic deformation.

As shown in FIG. 7 , the thickness of the crushing protrusion 46 of the electric wire crimping portion 37 in the diametrical direction may be the same as the thickness of the remaining portion of the electric wire crimping portion 37 in the diametrical direction.
As shown in FIG. 7 , multiple crushing protrusions 46 arranged in the same region (the first region E1 or the second region E2) may be spaced apart at a constant or equal distance in the circumferential direction of the shield 15.

- Although this disclosure has been described with reference to examples, it is understood that this disclosure is not limited to those examples or structures. This disclosure also encompasses various modifications and modifications within the scope of equivalents. In addition, various combinations and forms, as well as other combinations and forms that include only one element, more than one element, or less than one element, are also within the scope and concept of this disclosure.

REFERENCE SIGNS LIST 1 Wire harness 2 Shielded electric wire 3 Connector 4 Connector housing 5 Cap 6 Cover 7 Cylinder portion 8 Plate-shaped portion 9 Fastener 12 Shielding material 13 Wire body 14 Electric terminal 15 Shielding body 15a Hole 16 Hole 19 Core wire 20 Insulating coating 21 Wire material 22 Folded portion 23 Coating material 26 Mating connector 27 Mating connector terminal 28 GND terminal 30 Terminal body 31 Terminal end 33 First seal member 34 Second seal member 37 Wire crimping portion 38 Shield connection portion 39 Leaf spring portion 39a Protrusion 40 Engagement portion 41 Positioning portion 43 Protrusion 44 Protrusion 46 Crushing protrusion 47 Ring member 48 Flange 50 Cap body 51 Outer peripheral wall 52 Gap 53 Hole 54 Protrusion 55 Recess E1 First area E2 Second area

Claims

A shielded electric wire in which a shielding material for shielding noise is provided on an outer circumferential surface of an electric wire material that is electrically connected to a mating connector via an electric terminal,
a cylindrical shield having an electric wire crimping portion fixed to the shielding material by crimping, and a shield connection portion that comes into contact with a GND terminal of the mating connector when the electric terminal is electrically connected to the mating connector;
The electric wire crimping portion has a crushing protrusion that suppresses deformation of the shield connection portion when the electric wire crimping portion is crimped to the shielding material.
The crushing projection is one of a plurality of crushing projections,
The shielded wire according to claim 1 , wherein the plurality of crushing protrusions are provided at different positions in a circumferential direction of the shield.
the shielding body has a first region that is a specified range in a circumferential direction of the shielding body, and a second region that faces the first region in a radial direction of the shielding body,
The crushing projection is one of a plurality of crushing projections,
3. The shielded wire according to claim 1, wherein the first region and the second region each include a plurality of the crushed projections.
The shielded wire according to any one of claims 1 to 3, wherein the crushed protrusion is formed in a shape that protrudes from the wire crimping portion so as to have a space inside before deformation.
The shielded electric wire according to any one of claims 1 to 4, wherein the shield connection portion has a leaf spring portion on the outer surface of the shield that contacts the GND terminal.
The shielding material has a folded portion formed by folding back an end portion of the shielding material,
The shielded wire according to claim 1 , wherein the wire crimping portion is crimped to the folded portion.
The shielded wire according to claim 6, further comprising a ring member disposed inside the folded portion and sandwiching and holding the folded portion together with the wire crimping portion.
The shielded electric wire according to any one of claims 1 to 7, wherein the shield has an engagement portion that engages with the connector housing when attached to the connector housing that is mated with the mating connector so as not to come off from the connector housing.
The shielded wire according to any one of claims 1 to 8, wherein the shield has a positioning portion that positions the shield in the direction of insertion into the connector housing when the shield is attached to the connector housing that is mated with the mating connector.
The electrical terminal has a terminal body to which a mating connector terminal of the mating connector is connected and a terminal end portion fixed to the electric wire,
The terminal body is exposed to the outside of the shield,
The shielded wire according to claim 1 , wherein the terminal end is accommodated inside the shield.
A connector comprising: a shielded electric wire, the outer circumferential surface of which is provided with a shielding material for shielding noise, the shielded electric wire being electrically connected to a mating connector via an electric terminal; a connector housing attached to a connection destination of the shielded electric wire; and a cap for covering the electric terminal,
the shielded electric wire includes a cylindrical shielding body having an electric wire crimping portion that is fixed to the shielding material by crimping, and a shield connection portion that comes into contact with a GND terminal of the mating connector when the electric terminal is electrically connected to the mating connector,
The electric wire crimping portion has a crushing protrusion that suppresses deformation of the shield connection portion when the electric wire crimping portion is crimped to the shielding material.