WO2018135415A1

WO2018135415A1 - Electromagnetic shield component and wire harness

Info

Publication number: WO2018135415A1
Application number: PCT/JP2018/000712
Authority: WO
Inventors: 武史清水; 裕隆馬場
Original assignee: 株式会社オートネットワーク技術研究所; 住友電装株式会社; 住友電気工業株式会社
Priority date: 2017-01-23
Filing date: 2018-01-12
Publication date: 2018-07-26

Abstract

A wire harness 10 in which a localized increase in size is avoided comprises: an electrically conductive tubular metal pipe 21; a braid member 22 made of electrically conductive strands; and a fitting pipe 23 fitted with the metal pipe 21 with the braid member 22 interposed between the fitting pipe 23 and the metal pipe 21. On an inner peripheral surface 23a of the fitting pipe 23 that is positioned on the outside of the metal pipe 21, a protrusion 23b protruding on the braid member 22 side is provided to hold the braid member 22 in a pressed state between the metal pipe 21 and the fitting pipe 23, the protrusion 23b extending entirely circumferentially around the inner peripheral surface 23a.

Description

Electromagnetic shield parts and wire harness

The present invention relates to an electromagnetic shielding component and a wire harness.

2. Description of the Related Art Conventionally, there is a wire harness mounted on a vehicle in which the periphery of an electric wire is covered with an electromagnetic shielding component as an electromagnetic noise countermeasure (see, for example, Patent Document 1).
The electromagnetic shielding component is formed by connecting the ends of a cylindrical member having conductivity and a braided member having conductivity by a connecting member, and is inserted into a series of cylindrical members composed of the cylindrical member and the braided member. The electric wire to be shielded is electromagnetically shielded.

In the electromagnetic shielding parts as described above, a caulking ring made of metal is used as a connecting member for connecting the tubular member and the braided member. The caulking ring clamps the braided member between the outer peripheral surface of the cylindrical member and the inner peripheral surface of the caulking ring by tightening the braided member extrapolated (externally fitted) to the end of the cylindrical member from the outside. Such a caulking ring has an arc-shaped portion and a bent protruding portion that is bent so as to protrude radially outward from the arc-shaped portion, and is formed into a cylindrical member by plastic working on the bent protruding portion of the caulking ring. The braided member is maintained in a clamped state.

JP 2007-280814 A

By the way, in the electromagnetic shielding parts as described above, the bent protruding portion of the caulking ring protrudes radially outward at the connection portion between the braided member and the cylindrical member. There is a risk of becoming.

This invention was made in order to solve the said subject, The objective is to provide the electromagnetic shielding components and wire harness which can suppress local enlargement.

An electromagnetic shielding component that solves the above problems includes a first tubular member having conductivity, a flexible shielding member, and the flexible shielding member between the first tubular member and the second tubular member. A second tubular member fitted on the first tubular member in a state of being interposed between the first tubular member and an inner peripheral surface of the second tubular member toward the flexible shield member. A protrusion that protrudes and holds the flexible shield member in a pressed state between the first tubular member and the second tubular member is provided over the entire circumferential direction of the inner peripheral surface.

According to this structure, it protrudes toward the flexible shield member from the inner peripheral surface of the second cylindrical member that is externally fitted to the first cylindrical member, and is between the first cylindrical member and the second cylindrical member. Since the protrusion that holds the flexible shield member in the pressed state is provided, the flexible shield member can be held between the first tubular member and the second tubular member by the protrusion. The conventional bent projection of the metal caulking ring is not necessary, and local enlargement of the electromagnetic shielding component can be suppressed.

Moreover, since a protrusion is provided over the whole circumferential direction of the internal peripheral surface of a 2nd cylindrical member, it can provide a uniform pressing force with respect to a flexible shield member.
In the electromagnetic shielding component, an outer diameter of the second cylindrical member in a portion where the protrusion is formed is smaller than an outer diameter of the second cylindrical member in a portion where the protrusion is not formed. preferable.

According to this configuration, the outer diameter of the second cylindrical member where the protrusion is formed is smaller than the outer diameter of the second cylindrical member where the protrusion is not formed. For example, the protrusion can be formed by reducing the diameter of the second cylindrical member by plastic working.

In the electromagnetic shielding component, it is preferable that the outer peripheral surface of the protrusion is a smoother surface than the outer peripheral surface of the cylindrical member in a portion where the protrusion is not formed.
According to this configuration, since the outer peripheral surface of the protrusion is a smoother surface than the outer peripheral surface of the cylindrical member in the portion where the protrusion is not formed, the light reflectance due to the difference in surface roughness will also be different. It is possible to easily determine the formation position of the protrusion when the protrusion is inspected by a person or a machine. Moreover, since the reflectance of light becomes high, when measuring the protrusion length of a protrusion from the outside using various machines, it becomes possible to measure with high accuracy.

In the electromagnetic shielding component, the protrusion includes a first holding portion that holds the flexible shield member, and a second holding portion that holds the flexible shield member in a pressed state rather than the first holding portion. It is preferable to have.

According to this configuration, the protrusion has the first holding part and the second holding part having different pressing forces. Accordingly, the flexible shield member is held in close contact with the first tubular member by the second holding portion having a relatively high pressing force while the flexible holding member is held by the first holding portion having a relatively low pressing force. Can be made. Therefore, for example, when the flexible shield member is formed of a conductive member, the contact resistance between the first tubular member and the flexible shield member can be suppressed.

In the electromagnetic shielding component, it is preferable that a plurality of the protrusions are provided.
According to this structure, the flexible shield member can be held in a pressed state at a plurality of locations by providing a plurality of protrusions.

In the electromagnetic shield component, it is preferable that the plurality of protrusions provided have a protrusion length of at least one protrusion different from the protrusion length of the other protrusions.
According to this configuration, since the protrusion length of at least one protrusion is different from the protrusion length of the other protrusions, the plurality of protrusions provided are pressed against the flexible shield member due to the difference in protrusion length of the protrusions. Can be changed. Accordingly, the flexible shield member can be brought into close contact with the first tubular member by the protrusion having a relatively long protrusion length while holding the flexible shield member by the protrusion having a relatively short protrusion length. . Therefore, for example, when the flexible shield member is formed of a conductive member, the contact resistance between the first tubular member and the flexible shield member can be suppressed.

In the above-described electromagnetic shield component, the plurality of protrusions are provided so that the protrusion length of the protrusion closest to one end of the flexible shield member inserted into the second cylindrical member is the protrusion of the other protrusion. It is preferably longer than the length.

According to this configuration, the protrusion length of the protrusion closest to the one end of the flexible shield member inserted into the second cylindrical member is longer than the protrusion length of the other protrusions, so that the protrusion length is The flexible shield member can be brought into close contact with the first tubular member by the long protrusion. Even if one end portion of the flexible shield member is broken by a protrusion having a long protrusion length, the flexible shield is blocked by another protrusion (a protrusion other than the protrusion having a long protrusion length). The member can be held.

In the above-described electromagnetic shield component, the plurality of protrusions are provided such that the protrusion length of the protrusion that is the farthest from one end of the flexible shield member inserted into the second cylindrical member is the protrusion of the other protrusion. It is preferable that the length is shorter than the length.

According to this configuration, the protrusion length of the protrusion that is farthest from the one end of the flexible shield member that is inserted into the second cylindrical member is shorter than the protrusion length of the other protrusion. Even if the flexible shield member is broken by the protrusion, the flexible shield member can be held by the protrusion located on the opposite end side.

In the electromagnetic shielding component, the second cylindrical member is preferably made of an aluminum-based metal material.
According to this configuration, the second cylindrical member is made of an aluminum-based metal material, thereby reducing the weight of the second cylindrical member and improving workability when forming the protrusions and the like. be able to.

In the electromagnetic shield component, it is preferable that the braided member, the first cylindrical member, and the second cylindrical member are made of the same metal material.
According to this configuration, since the braided member, the first cylindrical member, and the second cylindrical member are made of the same metal material, the occurrence of electrolytic corrosion between the members can be suppressed.

In the electromagnetic shielding component, the flexible shielding member is preferably a tubular braided member made of a conductive wire.
According to this configuration, it is possible to obtain an electromagnetic shielding effect by covering the outer side of the first tubular member by configuring the flexible shield member with a tubular braided member.

The wire harness which solves the said subject is provided with one of said electromagnetic shielding components, and the electric wire penetrated in this electromagnetic shielding component.
According to this structure, the wire harness which has an effect similar to the effect in any one of the said can be provided.

According to the present invention, local enlargement of the electromagnetic shielding component and the wire harness can be suppressed.

The schematic block diagram of the wire harness of embodiment. (A) is the fragmentary sectional view of the wire harness of FIG. 1, (b) is the elements on larger scale of FIG. 2 (a). The perspective view of the fitting pipe of the wire harness of FIG. Sectional drawing of the electromagnetic shielding component of the wire harness of FIG. The graph which compared the contact resistance of the electromagnetic shielding components of an Example and a reference example. The graph which compared the contact resistance of the electromagnetic shielding components of an Example and a reference example. The fragmentary sectional view of the electromagnetic shielding component of a modification. The fragmentary sectional view of the electromagnetic shielding component of a modification. The fragmentary sectional view of the electromagnetic shielding component of a modification. The fragmentary sectional view of the electromagnetic shielding component of a modification. (A) The perspective view of the electromagnetic shielding component of a modification, (b) The perspective view of the fitting pipe of a modification. (A) is sectional drawing of the electromagnetic shielding components of a reference example, (b) is the elements on larger scale of Fig.12 (a).

Hereinafter, an embodiment of a wire harness will be described with reference to the drawings. In each drawing, a part of the configuration may be exaggerated or simplified for convenience of explanation. Further, the dimensional ratio of each part may be different from the actual one.

As shown in FIG. 1, the wire harness 10 of this embodiment is used to connect, for example, a high voltage battery 11 installed at the rear of the vehicle and an inverter 12 installed at the front of the vehicle in a hybrid vehicle, an electric vehicle, or the like. It is routed to pass under the floor of the vehicle. The inverter 12 is connected to a wheel drive motor (not shown) serving as a power source for vehicle travel, generates AC power from the DC power of the high voltage battery 11, and supplies the AC power to the wheel drive motor. The high voltage battery 11 is a battery capable of supplying a voltage of several hundred volts.

The wire harness 10 includes two high-

voltage wires

13a and 13b connected to the plus terminal and the minus terminal of the high-voltage battery 11, respectively, and a cylindrical electromagnetic shield component 14 that collectively surrounds the high-

voltage wires

13a and 13b. ing.

As shown in FIG. 2, each of the high voltage

electric wires

13a and 13b is a covered electric wire in which a core wire 31 made of a conductor is covered with an insulating coating 32 made of a resin material. The insulating coating 32 is formed by extrusion coating on the outer peripheral surface of the core wire 31 and covers the outer peripheral surface of the core wire 31 in a close contact state.

The high-

voltage wires

13a and 13b are non-shielded wires that do not have a shield structure themselves, and are wires that can handle high voltage and large current. Each high-voltage

electric wire

13a, 13b is inserted into the electromagnetic shield component 14, and one end of each high-voltage

electric wire

13a, 13b is connected to the high-voltage battery 11 via the connector C1, and the other end is connected via the connector C2. The inverter 12 is connected.

The electromagnetic shielding component 14 has a long cylindrical shape as a whole. And as for the electromagnetic shielding component 14, while the intermediate part of the length direction is comprised with the metal pipe 21, the range including the length direction both ends other than the site | part comprised with the metal pipe 21 is a flexible shielding member. The braided member 22 is configured.

The metal pipe 21 is formed in a substantially true cylindrical shape. The metal pipe 21 is made of, for example, an aluminum-based metal material. The metal pipe 21 is routed through the underfloor of the vehicle, and is bent into a predetermined shape according to the configuration of the underfloor. The metal pipe 21 has an internal space for inserting one or more, preferably a plurality of electric wires. The metal pipe 21 collectively shields the high-voltage

electric wires

13a and 13b inserted into the internal space and protects the high-voltage

electric wires

13a and 13b from stepping stones and the like. The metal pipe 21 may be called an electric wire protection tube.

The braided member 22 is a cylindrical member configured by braiding a plurality of metal strands. The metal wire of the braided member 22 can be made of the same metal material as that of the metal pipe 21. In the present embodiment, the metal wire of the braided member 22 and the metal pipe 21 are made of an aluminum-based metal material.

The braided member 22 of the present embodiment is connected to both ends of the metal pipe 21 in the length direction by fitting pipes 23. The fitting pipe 23 may be called a fastening sleeve for connecting the braided member 22 and the metal pipe 21.

Moreover, as shown in FIG. 1, the outer periphery of each braided member 22 is surrounded by exterior materials 24, such as a corrugated tube, for example.
Each braided member 22 collectively surrounds the outer periphery of the pipe external position X, which is a portion led out from the end of the metal pipe 21 in each high-voltage

electric wire

13a, 13b. Thereby, the pipe external position X of each high voltage

electric wire

13a, 13b is shielded by each braided member 22.

As shown in FIG. 2A, the fitting pipe 23 is formed in a substantially true cylindrical shape. The inner diameter of the fitting pipe 23 is larger than the outer diameter of the end of the metal pipe 21 so that the fitting pipe 23 fits the metal pipe 21 on the outside.

The fitting pipe 23 is made of an aluminum-based metal material that is the same metal material as the metal pipe 21. The fitting pipe 23 is fitted with the metal pipe 21 with the braided member 22 interposed.

2 (a) (b) and FIG. 3, the fitting pipe 23 has a protrusion 23b that protrudes radially inward from the inner peripheral surface 23a thereof. The protrusion 23 b is provided over the entire circumferential direction of the inner peripheral surface 23 a of the fitting pipe 23. The braided member 22 is held in a pressed state between the fitting pipe 23 and the metal pipe 21 by the protrusion 23b. Thereby, the braided member 22 and the metal pipe 21 are electrically connected. The protrusion 23 b can be provided at at least one predetermined position in the axial direction of the fitting pipe 23. The protrusion 23b may be an annular inward ridge that continuously extends in the circumferential direction without interruption. A region excluding the protrusion 23b on the inner peripheral surface 23a of the fitting pipe 23 may be referred to as a non-projection surface. After the protrusion 23 b is formed on the fitting pipe 23, the protrusion 23 b of the fitting pipe 23 cooperates with the outer surface of the metal pipe 21 to locally compress the braided member 22. As a result, in a state where the fitting pipe 23 connects the metal pipe 21 and the braided member 22, the braided member 22 is sandwiched between the non-projecting surface of the fitting pipe 23 and the outer surface of the metal pipe 21. And a second portion having a second thickness smaller than the first thickness sandwiched between the protrusion 23b of the fitting pipe 23 and the outer surface of the metal pipe 21. The protrusion 23 b of the fitting pipe 23 locally compresses the braided member 22 in cooperation with the outer surface of the metal pipe 21.

Here, the protrusion 23b is plastically deformed so that, for example, the fitting pipe 23 and a jig (not shown) are relatively rotated so that the jig is brought into contact with the outside of the fitting pipe 23 to reduce the diameter of the fitting pipe 23. By doing so, it is formed on the inner peripheral surface 23 a of the fitting pipe 23. Examples of the processing method for plastic deformation include spinning processing and swaging processing. Thus, the protrusion 23b is formed. That is, the fitting pipe 23 located outside in a state in which the fitting pipe 23 before the spinning process or the swaging process is externally fitted to the metal pipe 21 so that the braided member 22 is interposed between the metal pipe 21. On the other hand, the protrusion 23b is formed by spinning or swaging. For this reason, the groove part 23d will be formed in the position corresponding to the protrusion part 23b of the outer peripheral surface 23c of the fitting pipe 23. FIG. That is, the outer diameter of the fitting pipe 23 in the portion where the protrusion 23b is formed is smaller than the outer diameter of the fitting pipe 23 in the portion where the protrusion 23b is not formed.

The protrusion 23 b and the groove 23 d are formed at positions separated from the end of the fitting pipe 23. In other words, portions that are not reduced in diameter are located on both sides in the axial direction of the fitting pipe 23 of the groove 23d.

Further, the thickness of the fitting pipe 23 in the portion where the projection 23b is formed is thinner than the thickness of the fitting pipe 23 in the portion where the projection 23b is not formed, for example. In this example, the metal pipe 21 at a position corresponding to the protrusion 23b of the fitting pipe 23 is not deformed (reduced diameter). In other words, in this example, the protrusion amount of the protrusion 23b of the fitting pipe 23 is set so that the metal pipe 21 is not deformed (reduced diameter). Note that the metal pipe 21 at a position corresponding to the protrusion 23b can be deformed (reduced diameter) by setting the protrusion amount of the protrusion 23b large.

As shown in FIG. 2B, the outer peripheral surface 23c corresponding to the protrusion 23b (hereinafter referred to as the outer peripheral surface 23x of the protrusion 23b) is the outer peripheral surface of the fitting pipe 23 where the protrusion 23b is not formed. The surface is smoother than 23c (hereinafter referred to as other outer peripheral surface 23y). That is, the surface roughness of the outer peripheral surface 23x of the protrusion 23b is smoother than the surface roughness of the other outer peripheral surface 23y.

As described above, by making the outer peripheral surface 23x of the protrusion 23b smoother than the other outer peripheral surface 23y, the light reflectance is different. More specifically, the light reflectance of the outer peripheral surface 23x of the protrusion 23b is higher than the light reflectance of the other outer peripheral surface 23y. Thereby, for example, it is possible to easily determine whether or not the protrusion 23b is formed on the fitting pipe 23 by a person or a machine. Further, for example, when measuring the protrusion length of the protrusion 23b using a non-contact optical displacement sensor or the like, the light reflectance of the outer peripheral surface 23x of the protrusion 23b is increased, so that the sensor can be stably used. Since the amount of reflected light increases, stable measurement can be performed. In addition, although the example which measures the protrusion length of the protrusion 23b using the non-contact-type optical displacement sensor was demonstrated, the measuring method of the protrusion length of the protrusion 23b is not restricted to this. In some cases, the protrusion length of the protrusion 23b is not measured.

The protrusion 23b of the fitting pipe 23 of the present embodiment is formed so as to protrude approximately 1 mm radially inward from the inner peripheral surface 23a. The fitting pipe 23 is a metal pipe having an outer diameter of approximately 24 mm, a thickness of approximately 1 mm, and an inner diameter of approximately 22 mm. That is, the inner diameter of the position where the protrusion 23b is formed is approximately 20 mm. Further, the outer diameter of the metal pipe 21 is approximately 20 mm.

As shown in FIG. 4, the strands of the braided member 22 are pressed and crushed by the protrusions 23 b of the fitting pipe 23. For example, the strands of the braided member 22 pressed by the protrusions 23b are crushed so as to spread in the circumferential direction of the fitting pipe 23 into a sheet shape. The radial strand diameter of the strand of the braided member 22 crushed by the protrusion 23b is, for example, not more than half of the radial strand diameter of the strand of the braided member 22 that is not crushed by the projection 23b. Is set to Moreover, the strand diameter in the circumferential direction of the strand of the braided member 22 crushed by the protrusion 23b is, for example, twice or more the strand diameter in the circumferential direction of the strand of the braided member 22 not crushed by the projection 23b. It is set to be. Here, the mesh (gap between each strand) of the braided member 22 is filled with the strand which spreads in the circumferential direction. In other words, the gap between the fitting pipe 23 (projection 23) and the metal pipe 21 is reduced by crushing the strands of the braided member 22 by the projection 23b. Thereby, the contact area of the outer peripheral surface of the metal pipe 21 and the braided member 22 is increasing. In the example illustrated in FIG. 4, the strands of the braided member 22 are crushed by the protrusions 23 b to the extent that the mesh (gap between the strands) of the braided member 22 is eliminated. Note that the collapse amount of the strands of the braided member 22 and the mesh size of the braided member 22 can be set by adjusting the protruding amount of the protruding portion 23b (depth of the groove portion 23d).

In the reference examples shown in FIGS. 12A and 12B, the metal pipe 21 and the braided member 22 are electrically connected in a contact state using a metal caulking ring 100. As can be seen from FIG. 12, when the braided member 22 and the metal pipe 21 are connected using the caulking ring 100, the amount of deformation of the strands of the braided member 22 is slight compared to the configuration of this example shown in FIG. . That is, in the configuration of this example, the contact wire between the braided member 22 and the outer peripheral surface of the metal pipe 21 is increased by increasing the contact area between the braided member 22 and the outer peripheral surface of the metal pipe 21 by pressing the wire of the braided member 22. be able to.

Next, the contact resistance in the electromagnetic shielding component 14 of the wire harness 10 configured as described above will be described.
This inventor investigated the contact resistance of the electromagnetic shielding component 14 of this example, and the contact resistance of the electromagnetic shielding component in two reference examples (reference example 1 and reference example 2). The electromagnetic shielding component of Reference Example 1 includes a conductive pipe made of an aluminum metal material, a braided member made of a copper metal material, and a caulking ring made of an iron metal material. . The electromagnetic shielding component of Reference Example 2 includes a conductive pipe made of an aluminum metal material, a braided member made of an aluminum metal material, and a caulking ring made of an iron metal material. As shown in FIGS. 12A and 12B, the caulking ring used in Reference Example 1 and Reference Example 2 is a metal pipe in a form in which the arcuate part 101 is bent along the peripheral wall of the metal pipe and the arcuate part 101 is bent from both ends. And a bent protruding portion 102 that is bent and protrudes outward. That is, in the caulking ring, the diameter (inner diameter) of the arcuate portion 101 can be changed according to the plastic working of the bent protruding portion 102.

In FIG. 5, A1, A2 and A3 indicate contact resistances in the initial state of Reference Example 1, Reference Example 2 and Example, and B1, B2 and B3 indicate the thermal cycle of Reference Example 1, Reference Example 2 and Example. The subsequent contact resistance is shown. In comparison with the electromagnetic shielding component (B1) of Reference Example 1 after the cooling cycle and the electromagnetic shielding component (B2) of Reference Example 2 after the cooling cycle, the electromagnetic shielding component 14 (B3) of this example after the cooling cycle is in contact There was little increase in resistance.

In FIG. 6, A1, A2, and A3 indicate contact resistances of Reference Example 1, Reference Example 2, and Example in the initial state, and C1, C2, and C3 indicate salt water sprays of Reference Example 1, Reference Example 2, and Example, respectively. The contact resistance after the test is shown. Compared with the electromagnetic shielding part (C1) of Reference Example 1 after the salt spray test and the electromagnetic shielding part (C2) of Reference Example 2 after the salt spray test, the electromagnetic shielding part 14 (B3) of this example after the salt spray test Then, there was little increase in contact resistance.

As can be seen from FIG. 5 and FIG. 6, the electromagnetic shield component 14 of this example can suppress an increase in contact resistance compared to the electromagnetic shield components of Reference Example 1 and Reference Example 2. This suppresses a decrease in shielding performance.

Next, the operation of this embodiment will be described.
In the wire harness 10 of the present embodiment, for example, spinning or swaging in a state where the braided member 22 is interposed between the metal pipe 21 as the first cylindrical member and the fitting pipe 23 as the second cylindrical member. The protrusion 23b is provided on the inner peripheral surface 23a by reducing the diameter of a part of the fitting pipe 23 by processing or the like. The protrusion 23b protrudes from the inner peripheral surface 23a of the fitting pipe 23 toward the braided member 22 on the radially inner side. For this reason, the braided member 22 is held in a pressed state between the protrusion 23b and the metal pipe 21, and the metal pipe 21 and the braided member 22 are electrically connected.

Further, in the fitting pipe 23 of the present embodiment, the groove 23d is formed on the outer peripheral surface 23c by spinning, swaging, or the like, but a member that locally protrudes radially outward from the outer peripheral surface 23c is a fitting pipe. Therefore, the local increase in size of the electromagnetic shield component 14 and the wire harness 10 is suppressed.

Next, the effect of this embodiment will be described.
(1) The electromagnetic shield component 14 protrudes from the inner peripheral surface 23 a of the fitting pipe 23 located outside the metal pipe 21 toward the braided member 22 and presses the braided member 22 between the fitting pipe 23 and the metal pipe 21. The protrusion 23b held in a state is provided. For this reason, the braided member 22 can be hold | maintained between the fitting pipe 23 and the metal pipe 21 by the protrusion 23b. For this reason, since the bending protrusion part like the past can be made unnecessary, the local enlargement of the electromagnetic shielding component 14 can be suppressed.

(2) Since the protrusion 23 b is provided over the entire circumferential direction of the inner peripheral surface 23 a of the fitting pipe 23 located outside the fitting pipe 23 and the metal pipe 21, the protrusion 23 b is substantially the same as the braided member 22. A uniform pressing force can be applied.

(3) The outer diameter of the fitting pipe 23 where the protrusion 23b is formed is smaller than the outer diameter of the fitting pipe 23 where the protrusion 23b is not formed. That is, the protrusion 23b can be formed by reducing the diameter of the fitting pipe 23 by plastic working.

(4) Since the outer peripheral surface 23x of the protrusion 23b is a smoother surface than the outer peripheral surface 23y of the fitting pipe 23 in the portion where the protrusion 23b is not formed, the light reflectance due to the difference in surface roughness is different. In other words, it becomes possible to easily determine the formation position of the protrusion 23b when the protrusion 23b is inspected by a person or a machine. Moreover, when the reflectance of light becomes high, when measuring the protrusion length of the protrusion 23b from the outside using various machines, it becomes possible to measure with high accuracy.

(5) Since the fitting pipe 23 is made of an aluminum-based metal material, it is possible to reduce the weight of the fitting pipe 23 and improve the workability when forming the protrusions 23b and the like.

(6) Since the braided member 22, the metal pipe 21, and the fitting pipe 23 are made of the same metal material, the occurrence of electrolytic corrosion between the members can be suppressed. In particular, as in the present embodiment, when a non-waterproof structure is provided in which a rubber covering cover is not provided so as to cover the connection portion at the connection portion between the braided member 22 and the metal pipe 21 as the first cylindrical member. The increase in the number of parts can be suppressed while suppressing the occurrence of electrolytic corrosion. Moreover, in this example, since the braided member 22, the metal pipe 21, and the fitting pipe 23 are comprised with an aluminum-type metal material, weight reduction can be achieved.

(7) By adopting the tubular braided member 22 as the flexible shield member, it is possible to cover the outside of the metal pipe 21 and obtain an electromagnetic shield effect.
In addition, you may change the said embodiment as follows.

As shown in FIG. 7, a configuration having a taper portion 41 on the protrusion 23b may be adopted. More specifically, the protrusion 23b is a taper that is connected so that a portion connecting the outer peripheral surface 23x of the protrusion 23b and the outer peripheral surface 23y where the protrusion 23b is not formed intersects with the outer

peripheral surfaces

23x and 23y. Part 41 is provided. The tapered portion 41 is formed such that the width of the protruding portion 23b becomes narrower from the outer peripheral surface 23y side toward the braided member 22 side. In other words, the tapered portion 41 is formed so as to spread outward (so that the tapered portions 41 are separated from each other toward the radially outer side of the fitting pipe 23). Thus, by having the structure which has the taper part 41 in the protrusion 23b, it can suppress that the fitting pipe 23 fractures | ruptures with the abrupt change by protrusion 23b formation.

As shown in FIG. 8, a configuration may be adopted in which the protruding lengths of the protrusions 23b toward the radially inner side (the braided member 22 side) are different. The protrusion 23 b includes a tapered portion 42 and a flat portion 43 formed continuously with the tapered portion 42. In this example, a flat portion 43 is formed on the side of the projection 23b close to the end 22a of the braided member 22 inserted into the fitting pipe 23, and the side away from the end 22a (the braided member 22 is outside). A tapered portion 42 is formed on a side closer to the end 21a of the fitted metal pipe 21. The tapered portion 42 is formed such that the protruding length of the inner peripheral surface 23a of the protruding portion 23b gradually changes in the length direction of the electromagnetic shield component 14 (the axial direction of the fitting pipe 23). The taper portion 42 of this example is formed such that the protruding length inward in the radial direction increases from the end 21a side of the metal pipe 21 toward the flat surface portion 43 side.

The flat portion 43 is formed such that the protruding length of the inner peripheral surface 23a of the protruding portion 23b is substantially constant. The flat surface portion 43 of this example is configured to have a protrusion length substantially equal to a portion of the taper portion 42 that protrudes most radially inward. That is, the flat portion 43 holds the braided member 22 as a flexible shield member in a pressed state rather than the tapered portion 42. That is, the taper portion 42 corresponds to the first holding portion. Further, the flat surface portion 43 corresponds to a second holding portion.

As described above, by having the tapered portion 42 and the flat portion 43 on the protrusion 23b, the pressing force on the braided member 22 is different. More specifically, the pressing force of the tapered portion 42 against the braided member 22 is relatively low, and the pressing force of the flat portion 43 against the braided member 22 is relatively high. Here, when the crushing amount (crushing amount) of the strands of the braided member 22 is increased, the strands of the braided member 22 are easily cut and weakened against the pulling force. In addition, the taper portion 42 can suppress the amount of crushed wire of the braided member 22 to be small while fixing the braided member 22 to the metal pipe 21, and can suitably suppress breakage of the strand of the braided member 22. . The braided member 22 can be brought into close contact with the metal pipe 21 by the flat portion 43 having a relatively high pressing force. Therefore, the contact resistance between the metal pipe 21 and the braided member 22 can be suppressed.

Further, as shown in FIG. 9, the protrusion 23b may be configured to protrude in a radial shape in the radial direction. By forming the protrusion 23b in a curved shape, the pressing force on the braided member 22 is different. More specifically, the protrusion 23b has a configuration in which a central portion in the axial direction (the length direction) of the fitting pipe 23 protrudes relatively. That is, the protrusion 23b corresponds to a second holding portion that holds the braided member 22 in a state where the central portion presses the braided member 22 more than other portions. A portion other than the central portion corresponds to the first holding portion. By adopting such a configuration, the same configuration as that shown in FIG. 8 can be achieved.

As shown in FIG. 10, a configuration in which a plurality of

protrusions

51 and 52 are provided at positions separated in the axial direction (the length direction) of the fitting pipe 23 may be adopted. By providing the plurality of

protrusions

51 and 52, the braided member 22 can be held in a pressed state at a plurality of locations.

Further, in the configuration shown in FIG. 10, two

protrusions

51 and 52 are provided at an interval in the axial direction of the fitting pipe 23, and one protrusion 51 and the other protrusion 52 protrude radially inward. The length was set differently. More specifically, the protrusion length of the protrusion 51 closest to the end 22 a of the braided member 22 inserted into the fitting pipe 23 is longer than the protrusion length of the other protrusions 52. In other words, the protruding length of the protrusion 52 that is the farthest from the end 22 a of the braided member 22 that is inserted into the fitting pipe 23 is shorter than the protruding length of the other protrusions 51.

Thus, the protrusion length of the protrusion 51 closest to the end portion 22a of the braided member 22 is longer than the protrusion length of the other protrusion 52, so that the protrusion 51 with the longer protrusion length causes the braid member 22 to be connected to the metal pipe. 21. Therefore, the contact resistance between the metal pipe 21 and the braided member 22 can be suppressed. Even if the end portion 22a side of the braided member 22 is broken by the protruding portion 51 having a long protruding length, the braided member 22 is moved by the other protruding portion 52 relatively positioned on the opposite end portion 22a side. Can be held. Even when the number of protrusions is three or more, the same effect can be obtained by providing a protrusion with a long protrusion on the end 22a side and a protrusion with a short protrusion on the opposite end 22a. Play.

In the configuration shown in FIG. 10, the projection lengths of the two

protrusions

51 and 52 are set to be different from each other, but a configuration in which the projection lengths of the

projections

51 and 52 are the same may be adopted.
Although not specifically mentioned in the above embodiment, for example, the metal pipe 21, the braided member 22, and the fitting pipe 23 may be made of different materials. In this case, by forming the fitting pipe 23 located on the outer side with a relatively soft material, it can be positively deformed when forming the protrusion 23b, and the deformation amount of the metal pipe 21 or the braided member 22 Can be suppressed. In such a configuration, it does not matter whether the metal pipe 21, the braided member 22, and the fitting pipe 23 are made of the same metal material.

In the above embodiment, the metal pipe 21 as the first cylindrical member and the fitting pipe 23 as the second cylindrical member are substantially true cylindrical shapes, but may be elliptical cylindrical shapes. Examples of the first cylindrical member having an elliptical cylindrical shape include a connector shield shell that covers the connector C1. Below, the example which employ | adopted the connector shield shell is demonstrated.

As shown in FIGS. 11A and 11B, the electromagnetic shield component includes an elliptic cylindrical connector shield shell 61, an elliptic cylindrical braided member 62 that covers the outer side of the connector shield shell 61, and an outer side of the braided member 62. And an elliptical pipe-shaped fitting pipe 63.

The connector shield shell 61 may be based on a metal material such as iron, for example, and may be plated with aluminum so as to cover the entire base to form a connector shield shell, or the connector shield shell may be formed by aluminum die casting. With such a configuration, it is possible to suppress the occurrence of electrolytic corrosion when electrically connected to the braided member 62 made of an aluminum-based metal.

The braided member 62 has an elliptical cylindrical shape, and other configurations are substantially the same as the braided member 22 of the above embodiment. In addition, since the braided member 62 has flexibility, it can be set as an elliptical cylinder shape by deform | transforming a substantially perfect circular braided member. That is, only the part covering the connector shield shell 61 may be an elliptical cylinder, and the other part may be a substantially perfect circle.

The fitting pipe 63 has conductivity and is configured to have an elliptical cylindrical shape. The inner peripheral surface 63a of the fitting pipe 63 has a protrusion 63b that protrudes radially inward from the inner peripheral surface 63a as in the above embodiment. The protrusion 63 b is provided over the entire circumferential direction of the inner peripheral surface 63 a of the fitting pipe 63. The braided member 62 is held in a pressed state between the fitting pipe 63 and the connector shield shell 61 by the protrusion 63b. Thereby, the braided member 62 and the connector shield shell 61 are electrically connected. Moreover, the groove part 63d will be formed in the position corresponding to the protrusion part 63b of the outer peripheral surface 63c of the fitting pipe 63 similarly to the said embodiment. That is, the outer diameter of the fitting pipe 63 in the portion where the protrusion 63b is formed is smaller than the outer diameter of the fitting pipe 63 in the portion where the protrusion 63b is not formed.

In the above embodiment and each of the above modifications, the fitting pipe 23 is configured to externally fit the metal pipe 21, but a configuration in which the metal pipe 21 is externally fitted to the fitting pipe 23 may be employed. That is, the inner diameter of the metal pipe 21 is larger than the outer diameter of the fitting pipe 23, and the fitting pipe 23, the braided member 22, and the metal pipe 21 are arranged in this order from the radially inner side. In this case, a protrusion is provided on the inner peripheral surface of the metal pipe 21. In such a configuration, the outer peripheral surface corresponding to the protruding portion of the metal pipe 21 is a smoother surface than the outer peripheral surface of the metal pipe 21 where the protruding portion is not formed. That is, the outer peripheral surface corresponding to the protrusion has a smoother surface roughness than the other outer peripheral surfaces.

-In the said embodiment and said each modification, although it was set as the structure which employ | adopts the

braiding members

22 and 62 as a flexible shield member, you may change into a metal sheet, a metal fabric, etc.
In the above embodiment and each of the above modifications, the metal pipe 21 is a shield having a structure in which, for example, a conductive shield layer and a resin outer layer are sequentially laminated on the outer peripheral surface of a non-metal (resin made) pipe body. You may change to a pipe. In this case, the shield layer and the braided member 22 may be electrically connected using the fitting pipe 23 in a portion where the conductive shield layer is exposed by removing a part of the resin outer layer. Good.

Further, the fitting pipe 23 may be fitted into the metal pipe 21. In this case, the fitting pipe 23 is removed at a portion where a part of the pipe body which is the inner layer is removed and the conductive shield layer is exposed. May be used to electrically connect the shield layer and the braided member 22.

Although not specifically mentioned in the above embodiment and each of the above modifications, a rubber covering cover that covers the outer periphery of the connection portion and suppresses the ingress of water is attached to the connection portion between the metal pipe 21 and the braided member 22. It is good also as a structure to be made.

In the above embodiment and each of the above modifications, the braided member 22, the metal pipe 21, and the fitting pipe 23 are made of an aluminum-based metal material, but the present invention is not limited to this. The braided member 22, the metal pipe 21, and the fitting pipe 23 may be made of different conductive materials. Further, the braided member 22, the metal pipe 21, and the fitting pipe 23 may be made of the same conductive material other than the aluminum-based metal material.

-In the wire harness 10 of the said embodiment, although it was set as the structure by which the two high voltage

electric wires

13a and 13b are penetrated by the electromagnetic shielding component 14, the structure of the electric wire penetrated by the electromagnetic shielding component 14 is according to a vehicle structure. You may change suitably. For example, as an electric wire inserted into the electromagnetic shielding component 14, for example, a low voltage battery having a rated voltage of 12V or 24V and various low voltage devices (for example, a lamp, a car audio, etc.) are connected to drive various low voltage devices. It is good also as a structure which added the low voltage | pressure electric wire for electric power supply.

The arrangement relationship between the high voltage battery 11 and the inverter 12 in the vehicle is not limited to the above embodiment, and may be changed as appropriate according to the vehicle configuration. Moreover, in the said embodiment, although the high voltage battery 11 is connected with the inverter 12 via each high voltage

electric wire

13a, 13b, it is good also as a structure connected to high voltage apparatuses other than the inverter 12. FIG.

In the above embodiment, the present invention is applied to the wire harness 10 that connects the high-voltage battery 11 and the inverter 12, but may be applied to, for example, a wire harness that connects the inverter 12 and the wheel driving motor.

-You may combine the said embodiment and each modification suitably.
The present disclosure encompasses the following implementation examples. The reference numerals of the constituent elements of the embodiment are given for the purpose of understanding but not limitation.

[Appendix 1] The electromagnetic shielding component (14) of some mounting examples is
An electric wire protection tube (21; 61) having an end (21a) and an internal space for inserting one or more electric wires (13);
The cylindrical protective covering the outer surface of the wire protection tube (21; 61) so as to overlap the wire protection tube (21; 61) at least at the end (21a) of the wire protection tube (21; 61). A flexible shield member (22);
A fastening sleeve (23; 63) having an inner surface, wherein the inner surface of the fastening sleeve (23; 63) is over the flexible shield member (22) and the wire protection tube (21; 61). The flexible shield member (22) and the wire protection tube (21; 61) are connected by pressing the flexible shield member (22) against the outer surface of the wire protection tube (21; 61) at the lap portion. The fastening sleeve (23; 63) configured to:
The inner surface of the fastening sleeve (23; 63)
At least one annular inward ridge (23b; 51, 52) provided in at least one predetermined position in the axial direction of the fastening sleeve (23; 63) and continuously extending in the circumferential direction;
A non-projecting surface excluding the annular inward ridge (23b; 51, 52),
With the fastening sleeve (23; 63) fixedly connecting the flexible shield member (22) and the wire protection tube (21; 61), the flexible shield member (22)
A first portion having a first thickness sandwiched between the non-projecting surface of the fastening sleeve (23; 63) and the outer surface of the wire protection tube (21; 61);
From the first thickness sandwiched between the at least one annular inward ridge (23b; 51, 52) of the fastening sleeve (23; 63) and the outer surface of the wire protection tube (21; 61). And a second portion having a thin second thickness.

[Appendix 2] In some implementations, the fastening at the position of the at least one annular inward ridge (23b; 51, 52) when viewed from the axial direction of the fastening sleeve (23; 63). The thickness of the sleeve (23; 63) is constant.

[Appendix 3] In some mounting examples, the thickness of the fastening sleeve (23; 63) at the position of the non-projection surface is constant when viewed from the axial direction of the fastening sleeve (23; 63). is there.

[Supplementary Note 4] In some mounting examples, the fastening sleeve (23; 63) is configured such that the flexible shield member (22) and the wire protection tube (21; 61) are fixedly connected,
The thickness of the fastening sleeve (23; 63) at the position of the at least one annular inward ridge (23b; 51, 52) is the thickness of the fastening sleeve (23; 63) at the position of the non-projection surface. Thinner.

[Appendix 5] In some implementations, the inner surface of the fastening sleeve (23; 63) is between the at least one annular inward ridge (23b; 51, 52) and the non-projecting surface. Has a step.

[Appendix 6] In some implementations, the at least one annular inward ridge (23b; 51, 52) is formed on the outer surface of the wire protection tube (21; 61) with the flexible shield member ( 22) is configured to compress locally.

[Appendix 7] In some implementation examples, the at least one annular inward ridge (51, 52) is provided at a plurality of predetermined positions in a plurality of predetermined positions in the axial direction of the fastening sleeve (23; 63). Inward ridges (51, 52).

[Supplementary Note 8] In some implementations, the plurality of annular inward ridges (51, 52) are spaced apart in the axial direction of the fastening sleeve (23; 63) and two ridges parallel to each other ( 51, 52).

[Supplementary Note 9] In some implementation examples, the flexible shield member (22) is a conductive braided member.
[Supplementary Note 10] In some mounting examples, the wire protective tube (21; 61) is a metal tube having conductivity and shape retention.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the technical concept thereof. For example, some of the parts described in the embodiment (or one or more aspects thereof) may be omitted, or some parts may be combined. The scope of the invention should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

10 ...

Wire harness

13a, 13b ... High voltage electric wire (electric wire)
14 ... Electromagnetic shielding component 21 ... Metal pipe (first cylindrical member)
22 ... Braided member (shield member)
23 .. fitting pipe (second cylindrical member)
23a ... Inner peripheral surface 23b ... Projection 23c ... Outer

peripheral surface

23x, 23y ... Outer

peripheral surface

51, 52 ... Projection 61 ... Connector shield shell (first tubular member)
62 ... Braided member 63 ... Fitting pipe (second cylindrical member)
63a ... Inner peripheral surface 63b ... Projection 63c ... Outer peripheral surface

Claims

A first tubular member having electrical conductivity;
A flexible shield member;
A second tubular member externally fitted to the first tubular member with the flexible shield member interposed between the first tubular member and the second tubular member;
Have
An inner peripheral surface of the second tubular member projects toward the flexible shield member and presses the flexible shield member between the first tubular member and the second tubular member The electromagnetic shielding component according to claim 1, wherein the projecting portion held by is provided over the entire circumferential direction of the inner circumferential surface.
In the electromagnetic shielding component according to claim 1,
The electromagnetic shielding component, wherein an outer diameter of the second cylindrical member in a portion where the protrusion is formed is smaller than an outer diameter of the second cylindrical member in a portion where the protrusion is not formed .
In the electromagnetic shielding component according to claim 1 or 2,
The electromagnetic shielding component according to claim 1, wherein the outer peripheral surface of the protrusion is a surface smoother than the outer peripheral surface of the second cylindrical member in a portion where the protrusion is not formed.
In the electromagnetic shielding component according to any one of claims 1 to 3,
The protrusion has a first holding part that holds the flexible shield member, and a second holding part that holds the flexible shield member in a pressed state rather than the first holding part. Electromagnetic shield parts.
In the electromagnetic shielding component according to any one of claims 1 to 4,
An electromagnetic shield component comprising a plurality of the protrusions.
In the electromagnetic shielding component according to claim 5,
The projecting length of at least one projecting portion is different from the projecting length of the other projecting portion.
The electromagnetic shielding component according to claim 6,
The protrusions provided in plurality are such that the protrusion length of the protrusion closest to one end of the flexible shield member inserted into the second cylindrical member is longer than the protrusion length of the other protrusions. Features electromagnetic shielding parts.
In the electromagnetic shielding component according to claim 6 or 7,
The protrusions provided in plurality are such that the protrusion length of the protrusion most distant from one end of the flexible shield member inserted into the second tubular member is shorter than the protrusion length of the other protrusions. Features electromagnetic shielding parts.
In the electromagnetic shielding component according to any one of claims 1 to 8,
The second cylindrical member is made of an aluminum-based metal material.
In the electromagnetic shielding component according to any one of claims 1 to 9,
The electromagnetic shielding component, wherein the flexible shielding member, the first cylindrical member, and the second cylindrical member are made of the same metal material.
The electromagnetic shielding component according to any one of claims 1 to 10,
The electromagnetic shield component according to claim 1, wherein the flexible shield member is a tubular braided member made of a conductive wire.
A wire harness comprising the electromagnetic shielding component according to any one of claims 1 to 11 and an electric wire inserted into the electromagnetic shielding component.