JP7096984B2 - Wire harness - Google Patents

Description

The present invention relates to a wire harness.

Conventionally, for example, a wire harness provided in a vehicle whose drive source is an electric motor and connecting an inverter and an electric motor is known. As a wire harness of this type, a wire harness provided with a braided shield for reducing electromagnetic noise radiated from the electric wire of the wire harness is known.

Patent Document 1 discloses a wire harness in which an annular magnetic core is provided in addition to the braided shield to further reduce electromagnetic noise radiated from the wire harness by the magnetic core.

Japanese Unexamined Patent Publication No. 2014-130708

By the way, since the magnetic core is annular, when attaching the magnetic core to the wire harness, after passing the electric wire or the wire harness through the hollow portion of the magnetic core, the magnetic core is formed along the longitudinal direction of the electric wire. It is desirable to fix the magnetic core so that it does not move. At this time, a structure is desired in which the magnetic core can be easily attached and the magnetic core can be firmly fixed.

Therefore, an object of the present invention is to provide a wire harness in which the magnetic core can be easily attached and the magnetic core can be firmly fixed.

The present invention comprises an electric wire and an electromagnetic wave suppression member attached around the electric wire and having an annular magnetic material core for the purpose of solving the above-mentioned problems, and the electromagnetic wave suppression member is the magnetic material core. A movement restricting portion that is formed separately from the accommodating portion and the accommodating portion, grips the electric wire or a member that covers the periphery of the electric wire, and is fixed to the electric wire or a member that covers the periphery of the electric wire. And a fixing means for fixing the accommodating portion and the movement restricting portion to each other.

According to the present invention, it is possible to provide a wire harness in which the magnetic core can be easily attached and the magnetic core can be firmly fixed.

It is a perspective view which shows the appearance of the wire harness which concerns on one Embodiment of this invention. FIG. 1 is a perspective view in which the braided shield and the corrugated tube are omitted. It is a figure which shows the connector, (a) is a perspective view, (b) is a sectional view taken along the line AA. It is an exploded perspective view of a housing. It is a perspective view of the seal holding member. It is a figure which shows the accommodating part, (a) is a perspective view, (b) is a fracture surface view. (A) and (b) are perspective views of the movement control part. (A) is a perspective view when the wire harness is fixed to the motor housing, and (b) is a sectional view showing a fixing structure between the movement restricting portion and the motor housing.

[Embodiment]
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

(Explanation of the overall structure of the wire harness)
FIG. 1 is a perspective view showing the appearance of a wire harness according to an embodiment of the present invention. Further, FIG. 2 is a perspective view in which the braided shield and the corrugated tube are omitted in FIG.

As shown in FIGS. 1 and 2, the wire harness 1 includes an electric wire 2 and a connector 3 provided at an end of the electric wire 2.

The wire harness 1 is mounted on a vehicle such as an electric vehicle or a hybrid vehicle driven by an electric motor, and is used to supply a PWM (Pulse Width Modulation) controlled current output from an inverter to the electric motor. Will be. This current includes a high frequency component due to switching of a switching element such as a power transistor.

In the present embodiment, the wire harness 1 uses three electric wires 2 and is configured to supply a U-phase, a V-phase, and a W-phase three-phase alternating current to the electric motor.

Although not shown, each electric wire 2 includes a conductor obtained by twisting a plurality of strands made of good electric conductors, and an insulator made of an insulating resin provided on the outer periphery of the conductor.

A connection terminal 21 is connected to the end of each electric wire 2. The connection terminal 21 integrally includes a crimped portion 21a that is crimped and fixed to the end of the conductor of the electric wire 2 and a plate-shaped connecting portion 21b that extends from the crimped portion 21a. The connection portion 21b is formed with a bolt fixing connection hole 21c that penetrates the connection portion 21b in the thickness direction. The connection terminal 21 is a device-side connection terminal by fixing the connection portion 21b to the corresponding device-side connection terminal provided on the terminal block in the mounted member to be connected (for example, in the motor housing) by bolting. Is electrically connected to.

A braided shield 4 is provided around the three electric wires 2 so as to collectively cover the three electric wires 2. The braided shield 4 is formed by knitting a plurality of shield strands made of, for example, tin-plated copper. Here, six shielded wires are used as one bundle of wires, and the bundles of wires are crossed in an X shape and knitted to form a braided shield 4. The braided shield 4 can be expanded and contracted in inner diameter by, for example, manually changing the size of the stitches.

In the wire harness 1, three electric wires 2 extending from the connector 3 are bundled (a wire connecting the central axes of each electric wire 2 in a cross section perpendicular to the longitudinal direction of the electric wire 2 becomes a triangular shape (regular triangular shape). The outer circumference of the braided shield 4 is covered with a braided shield 4, and the outer periphery of the braided shield 4 is covered with a resin corrugated tube (corrugated tube) 9. The corrugated tube 9 is a tubular member made of resin, and has a bellows shape in which large diameter portions and small diameter portions are alternately formed. The end of the corrugated tube 9 on the connector 3 side is fixed around the electric wire 2 (around the braided shield 4), for example, by winding an adhesive tape.

An electromagnetic wave suppressing member 8 is provided around the corrugated tube 9. The details of the electromagnetic wave suppressing member 8 will be described later. In the present embodiment, the electromagnetic wave suppressing member 8 is provided around the corrugated tube 9, but the present invention is not limited to this, and the electromagnetic wave suppressing member 8 may be provided so as to cover the electric wire 2.

(Explanation of connector 3)
3A and 3B are views showing a connector, FIG. 3A is a perspective view, and FIG. 3B is a sectional view taken along line AA.

As shown in FIGS. 3 (a) and 3 (b), the connector 3 is attached to the housed member 31 accommodated in the mounting hole (not shown) formed in the mounted member (for example, the motor housing) and the electric wire 2. A wire holding member 32 arranged alongside the accommodated member 31 is provided.

The electric wire holding member 32 holds the electric wire 2 and is fixed to the attached member (for example, a motor housing). The electric wire holding member 32 includes a housing (electric wire holder) 5 made of an insulating resin and a shield shell (shield case) 6 made of a conductive metal.

As shown in FIGS. 3 and 4, in the present embodiment, the housing 5 is vertically divided at the central portion in the alignment direction of the electric wires 2 and the height direction perpendicular to the longitudinal direction of the electric wires 2. On each of the divided surfaces of the divided housing 51 (the upper surface of the lower divided housing 51 and the lower surface of the upper divided housing 51), a wire support having a semicircular cross section perpendicular to the longitudinal direction of the electric wire 2 is supported. The grooves 52 are formed so as to face each other.

When the electric wire 2 is placed in the electric wire support groove 52 of one of the divided housings 51 and the one divided housing 51 and the other divided housing 51 are combined, the electric wire 2 is sandwiched between the electric wire support grooves 52 of both the divided housings 51. The electric wire 2 is supported by the housing 5. The housing 5 is made of an insulating resin such as PBT (polybutylene terephthalate), PA (polyamide), or PPS (polyphenylene sulfide), and is formed by injection molding, for example. The housing 5 may be appropriately lightened in order to suppress defects such as sink marks during molding. Further, the housing 5 may be provided with means for fixing the two divided housings 51 to each other.

A shield shell 6 is provided on the outer periphery of the housing 5 by press fitting. In the present embodiment, the two split housings 51 are fixed to each other by being press-fitted into the shield shell 6 with the electric wire 2 sandwiched between them. The shield shell 6 is made of a conductive metal such as iron, brass, or aluminum, and is configured to accommodate at least a part of the housing 5.

The shield shell 6 is provided so as to project outward from a cylindrical portion 61 that covers the periphery of the housing 5 and an end portion on the tip end side of the tubular portion 61, and is fixed to a mounted member (for example, a motor housing). It integrally has a flange portion 62 as a fixing portion. A bolt hole 62a for fixing a bolt is formed in the flange portion 62. As shown in FIG. 1, a band-shaped tightening member 64 is provided on the outer periphery of the shield shell 6, and the braided shield 4 is fixed to the outer periphery of the shield shell 6 by the tightening member 64, and a cylinder is formed. The shape portion 61 is tightened and fixed to the housing 5.

As shown in FIGS. 3 (b) and 5, the housed member 31 is a member housed in a mounting hole (not shown) formed in the mounted member (for example, a motor housing), and is a member of the shield shell 6. It is arranged on the tip side of the flange portion 62.

The housed member 31 is held on the outer peripheral surface of the seal holding member 72 and the seal holding member 72 having three insertion holes 71 through which the electric wire 2 is inserted, and the inner surface of the mounting hole of the mounted member and the seal holding member 72. It includes an outer peripheral sealing member 76 that seals the space, and an inner peripheral sealing member (wire seal) 74 that is held on the inner peripheral surface of the insertion hole 71 and seals between the insertion hole 71 and the electric wire 2. In FIG. 5, the outer peripheral seal member 76 and the inner peripheral seal member 74 are omitted.

The seal holding member 72 is made of an insulating resin such as PBT (polybutylene terephthalate), PA (polyamide), or PPS (polyphenylene sulfide).

The outer peripheral seal member 76 is formed in an annular shape, and is arranged in a groove 75 for an outer peripheral seal member formed on the outer periphery of the seal holding member 72 along the circumferential direction. The outer peripheral seal member 76 is interposed between the seal holding member 72 and the inner surface of the mounting hole of the mounted member (for example, the motor housing) to prevent moisture from entering the mounted member from the outside of the seal holding member 72. Suppress.

The inner peripheral seal member 74 is formed in an annular shape, and is arranged in the inner peripheral seal member groove 73 formed along the circumferential direction at the end of the insertion hole 71 on the housing 5 side of the seal holding member 72. The inner peripheral seal member 74 is interposed between the insulator of the electric wire 2 and the seal holding member 72, and prevents moisture from entering the attached member through the electric wire 2.

A locking projection 77 projecting toward the proximal end is integrally formed at the proximal end of the seal holding member 72. The locking projection 77 connects a rectangular parallelepiped head 77a, the head 77a, and the seal holding member 72, and has a shaft portion formed in a rectangular parallelepiped shape (square columnar shape) having a width and height smaller than that of the head 77a. (Neck) 77b and the like are integrally provided.

As shown in FIG. 4, the housing 5 is formed with a locking groove 56 for locking the locking projection 77. The locking groove 56 has a head accommodating portion 56a having a width, height and length larger than that accommodating the head 77a of the locking projection 77, and a head accommodating portion 56a having a width and height smaller than the head 77a. It has a shaft portion accommodating portion 56b having a width and height larger than that of the shaft portion 77b and a length shorter than that of the shaft portion 77b, and the head accommodating portion 56a opens forward via the shaft portion accommodating portion 56b. It is configured as follows.

The shield shell 6 is attached to a member (for example, a motor) by accommodating the head 77a in the head accommodating portion 56a and the shaft portion 77b in the shaft accommodating portion 56b and engaging the locking projection 77 in the locking groove 56. When fixing to the housing), the seal holding member 72 can move relative to the electric wire holding member 32. In the present embodiment, the seal holding member 72 is movable and movable in the length direction, the width direction, and the height direction with respect to the housing 5.

With this configuration, even if the wire holding member 32 (shield shell 6 or housing 5) rotates or tilts due to bending of the wire 2 or torque when fixing the shield shell 6 with bolts, the rotation or tilt is sealed. It becomes difficult for the holding member 72 to follow, and it is possible to prevent the waterproof function from being lost due to, for example, only a part of the outer peripheral sealing member 76 being excessively crushed.

Here, the case where the head 77a and the shaft portion 77b of the locking projection 77 are formed in a rectangular parallelepiped shape (or a prismatic shape) has been described, but the shapes of the head portion 77a and the shaft portion 77b are not limited to this. For example, the head 77a and the shaft portion 77b may be cylindrical, or the head 77a may be spherical.

Further, the means for connecting the seal holding member 72 and the electric wire holding member 32 (housing 5) so as to be relatively movable is not limited to the locking projection 77 and the locking groove 56. For example, an elastic hook (lance) is extended from one of the seal holding member 72 and the housing 5, and a locking portion for locking the hook is provided on the other of the seal holding member 72 and the housing 5 to lock the hook. Even in a state where the seal holding member 72 and the housing 5 are connected to each other by being locked to the portion, the seal holding member 72 and the electric wire holding member 32 (housing 5) can be configured to be relatively movable due to the elasticity of the hook. Is.

(Explanation of electromagnetic wave suppression member 8)
6A and 6B are views showing the accommodating portion 81 of the electromagnetic wave suppressing member 8, where FIG. 6A is a perspective view and FIG. 6B is a fracture surface view. 7 (a) and 7 (b) are perspective views of the movement restricting portion 83 of the electromagnetic wave suppressing member 8.

As shown in FIGS. 1 and 2 and FIGS. 6 and 7, the electromagnetic wave suppressing member 8 is attached so as to cover the periphery of the electric wire 2 and has an annular magnetic material core 82. In the present embodiment, the electromagnetic wave suppressing member 8 is formed separately from the accommodating portion 81 accommodating the magnetic core 82 and the accommodating portion 81, and grips the electric wire 2 or the member covering the periphery of the electric wire 2. It has a movement restricting portion 83 fixed to the electric wire 2 or a member covering the periphery of the electric wire 2, and a fixing means 84 for fixing the accommodating portion 81 and the movement restricting portion 83 to each other.

In this embodiment, the magnetic core 82 is made of a nanocrystalline soft magnetic material. The nanocrystal soft magnetic material is a material in which nanocrystal grains of a ferromagnetic phase are dispersed in the remaining amorphous phase by crystallizing an amorphous alloy. As the magnetic core 82, a soft magnetic material such as soft ferrite can also be used.

Here, Finemet (registered trademark) was used as the nanocrystal soft magnetic material. The magnetic core 82 made of Finemet (registered trademark) is made of, for example, a molten alloy containing Fe (-Si) -B as a basic component and a trace amount of Cu and elements such as Nb, Ta, Mo, and Zr added thereto. An amorphous metal strip with a thickness of about 20 μm is once formed by an ultra-quenching method such as a roll method, and this is formed into a magnetic core shape (here, an annular shape that collectively covers three electric wires 2), and then heat-treated at a crystallization temperature or higher. It is formed by crystallization. The crystal grain size of the magnetic core 82 is about 10 nm. As the magnetic core 82, a nanocrystal soft magnetic material other than Finemet (registered trademark), for example, NANOMET (registered trademark) may be used.

The nanocrystal soft magnetic material has a high saturation magnetic flux density and excellent soft magnetic properties (high magnetic permeability and low magnetic core loss characteristics) as compared with the soft magnetic materials such as soft ferrite that have been conventionally used. Therefore, by using the nanocrystal soft magnetic material as the magnetic core 82, the magnetic core 82 can be miniaturized. As a result, it is possible to suppress the increase in size and mass of the electromagnetic wave suppression member 8 and to maintain the entire wire harness 1 in a compact and lightweight manner even when the electromagnetic wave suppression member 8 is attached. The size (thickness and length) of the magnetic core 82 may be appropriately set so as to obtain desired characteristics in consideration of the characteristics of the nanocrystalline soft magnetic material to be used.

Further, the nanocrystal soft magnetic material has a characteristic that electromagnetic noise in the frequency band used for radios such as AM radio can be suppressed as compared with the soft magnetic materials such as soft ferrite which have been conventionally used. Since the vehicle provides road information and the like by the AM radio, it can be said that the effect of suppressing electromagnetic noise in the frequency band used for the radio is particularly large when the wire harness 1 is applied to the vehicle.

However, the nanocrystal soft magnetic material has a characteristic that the magnetic characteristics are easily changed when stress is applied from the outside. Therefore, when a magnetic core 82 made of a nanocrystalline soft magnetic material is used, it is necessary to configure the magnetic core 82 so that no external stress is applied to the magnetic core 82.

Therefore, in the present embodiment, an inner wall portion 81a harder than the electric wire 2 is provided in the accommodating portion 81, and an annular magnetic material core 82 made of a nanocrystalline soft magnetic material is provided around the inner wall portion 81a. As a result, stress is not applied to the magnetic core 82 even when the electric wire 2 is bent, and it is possible to suppress changes in the magnetic characteristics of the magnetic core 82. That is, the accommodating portion 81 (inner wall portion 81a) plays a role of restricting the movement of the electric wire 2 when the electric wire 2 is bent and protecting the magnetic core 82. The term "hard" as used herein means that it is more difficult to bend when trying to bend an object having the same length (for example, a unit length) by holding both ends.

In the present embodiment, the entire accommodating portion 81 is made of a material harder than the electric wire 2, but the present invention is not limited to this, and at least the inner wall portion 81a may be made of a material harder than the electric wire 2. The accommodating portion 81 is made of an insulating resin such as PP (polypropylene), PBT (polybutylene terephthalate), PA (polyamide), or PPS (polyphenylene sulfide).

When the magnetic core 82 protrudes from the inner wall portion 81a in the length direction (longitudinal direction of the electric wire 2), the magnetic core 82 in the protruding portion interferes with the bent electric wire 2 to cause the magnetic core 82. Since the magnetic characteristics may change, it is desirable that the magnetic core 82 is provided so as not to protrude from the inner wall portion 81a in the longitudinal direction of the electric wire 2.

When the inner wall portion 81a is thickly formed, the distance between the magnetic core 82 and the electric wire 2 becomes large, so that the magnetic core 82 is slightly longer in the length direction (longitudinal direction of the electric wire 2) than the inner wall portion 81a. Even if it protrudes, there is no possibility that the electric wire 2 interferes with the magnetic core 82. However, as the distance between the electric wire 2 and the magnetic core 82 increases, the peripheral length of the laminated magnetic core 82 becomes longer and the effect of suppressing electromagnetic waves becomes smaller. That is, as in the present embodiment, the magnetic core 82 is provided so as not to protrude in the longitudinal direction of the electric wire 2 from the inner wall 81a, so that the thickness of the inner wall 81a is made smaller (the magnetic core 82 and the electric wire). It is possible to suppress changes in the magnetic characteristics of the magnetic core 82 while further enhancing the effect of suppressing electromagnetic waves by reducing the distance from 2).

In the present embodiment, the accommodating portion 81 has a tubular outer wall portion 81b provided so as to sandwich the magnetic core 82 between the inner wall portion 81a and the inner wall portion 81a and the magnetic core 82. Further, the magnetic core 82 further has a front wall portion 81c and a rear wall portion 81d as a restricting portion for suppressing the magnetic core 82 from falling off from between the inner wall portion 81a and the outer wall portion 81b.

The outer wall portion 81b plays a role of suppressing the surrounding members (vehicle body, etc.) from interfering with the magnetic material core 82 and changing the magnetic characteristics of the magnetic material core 82, and the outer peripheral portion of the magnetic material core 82. It is formed to cover the.

The front wall portion 81c is configured to connect the ends of the inner wall portion 81a and the outer wall portion 81b on the connector 3 side to each other and close the gap between the inner wall portion 81a and the outer wall portion 81b. The rear wall portion 81d is configured to connect the ends of the inner wall portion 81a and the outer wall portion 81b on the opposite side of the connector 3 to close the gap between the inner wall portion 81a and the outer wall portion 81b. That is, the accommodating portion 81 is formed in an annular shape as a whole, and its cross section perpendicular to the circumferential direction is formed in a rectangular shape.

In the present embodiment, the inner wall portion 81a is formed in a cylindrical shape that collectively covers the corrugated pipe 9 containing the three electric wires 2 and the braided shield 4. The inner diameter of the accommodating portion 81 is formed to be larger than the outer diameter of the corrugated pipe 9 (outer diameter of the large diameter portion). The clearance between the accommodating portion 81 and the corrugated pipe 9 is appropriately adjusted so as not to make it difficult to insert the accommodating portion 81.

The accommodating portion 81 may be divided into two in the axial direction so as to accommodate the magnetic core 82, or may be formed by molding a resin into the magnetic core 82.

As shown in FIGS. 7 and 8, the movement restricting portion 83 is formed in an annular shape along the outer circumference of the corrugated pipe 9, and is fastened and fixed to the outer circumference of the corrugated pipe 9 with the annular portion 83a and the outer peripheral surface of the annular portion 83a. It is integrally formed with the fixed portion 83b for fixing the movement restricting portion 83 to the object to be fixed (here, the motor housing 91).

The annular portion 83a is cut at two points in the circumferential direction thereof, and one of the cut points is integrally connected by a hinge portion 83c (see FIG. 8B), and the hinge portion 83c is deformed by deforming the hinge portion 83c. The other side of the cut can be opened. Locking claws 83d (see FIG. 8B) are formed at the two ends of the annular portions 83a facing each other with the openable cutting portion interposed therebetween, and these locking claws 83d are locked to each other. By doing so, the cut part can be closed. With the locking claws 83d released, the corrugated tube 9 is inserted into the annular portion 83a, and then the locking claws 83d are locked to each other so that the annular portion 83a grips the corrugated tube 9. The movement restricting portion 83 can be fastened and fixed to the outer periphery of the corrugated pipe 9 by the gripping. The specific structure for fixing the two ends of the annular portions 83a facing each other across the cut portion is not limited to this, and can be appropriately changed.

A rib-shaped inward protrusion 83e protruding inward is formed on the inner peripheral surface of the annular portion 83a. The inward protrusion 83e plays a role of restricting the movement of the movement restricting portion 83 along the longitudinal direction by being fitted into the groove portion (the portion sandwiched between the adjacent large diameter portions) of the corrugated pipe 9. In this way, the movement restricting portion 83 is fixed to the corrugated pipe 9 in a state where the inward protrusion 83e is fitted into the groove portion of the corrugated pipe 9.

It is desirable that the fixing portion 83b is fixed at a position where the influence of heat is relatively small. In the present embodiment, the fixing portion 83b is fixed to the motor housing 91, which is the housing of the motor device that is relatively less affected by heat. However, the present invention is not limited to this, and the fixing portion 83b may be fixed to the vehicle body or the like.

The motor housing 91 to be fixed in the present embodiment is provided with a plate-shaped protrusion 92. The protrusion 92 is formed with a locking hole 93 that penetrates the protrusion 92 in the thickness direction. The fixing portion 83b is provided in the fixing hole 83f into which the tip portion of the projecting portion 92 is inserted and in the locking hole 93 of the projecting portion 92 provided in the fixing hole 83f and inserted into the fixing hole 83f. It has a claw portion of 83 g and the like. When the protruding portion 92 of the motor housing 91 is inserted into the fixing hole 83f of the fixing portion 83b, the claw portion 83g is locked in the locking hole 93 of the protruding portion 92, and the movement restricting portion 83 is fixed to the motor housing 91. Will be done.

The movement control unit 83 is made of an insulating resin such as PP (polypropylene), PBT (polybutylene terephthalate), PA (polyamide), or PPS (polyphenylene sulfide). The accommodating portion 81 and the movement restricting portion 83 may be made of the same material or may be made of different materials. For example, since the magnetic core 82 may generate heat when magnetically saturated, the accommodating portion 81 is made of a material having high heat resistance, and the movement restricting portion 83 is made of an inexpensive material having relatively low heat resistance. It is also possible to reduce costs.

In the present embodiment, the case where the movement control unit 83 is fixed to the corrugated pipe 9 has been described, but the movement control unit 83 may be directly fixed to the electric wire 2 or other than the corrugated pipe 9. It may be fixed to a member (for example, a braided shield 4 or an aluminum pipe) that covers the periphery of the electric wire 2.

The fixing means 84 is for fixing the accommodating portion 81 and the movement restricting portion 83, which are formed separately, to each other. In the present embodiment, the fixing means 84 is formed on the first locking portion 84a formed of the concave groove formed on the inner peripheral surface of the annular portion 83a of the movement restricting portion 83 and the outer peripheral surface of the accommodating portion 81. It has a second locking portion 84b, which is composed of a protrusion. Here, a cylindrical body 81e coaxial with the inner wall portion 81a protruding outward in the axial direction from the front wall portion 81c is integrally formed with the front wall portion 81c, and protrudes outward in the radial direction from the outer peripheral surface of the cylindrical body 81e. As described above, the second locking portion 84b made of protrusions is formed.

In a state where the first locking portion 84a and the second locking portion 84b are locked (that is, a state in which the protrusion is locked in the concave groove), both locking claws 83d are locked to each other to lock the movement restricting portion 83. By gripping the corrugated pipe 9, the movement restricting portion 83 is fixed to the corrugated pipe 9, and at the same time, the accommodating portion 81 and the movement restricting portion 83 are fixed to each other.

Here, the first locking portion 84a is a concave groove and the second locking portion 84b is a protrusion, but the relationship between the concave groove and the protrusion may be reversed. That is, the first locking portion 84a made of protrusions may be formed on the inner peripheral surface of the annular portion 83a, and the second locking portion 84b made of concave grooves may be formed on the outer peripheral surface of the accommodating portion 81. Further, although two locking portions 84a and 84b are formed here, the number of both locking portions 84a and 84b is not limited to this, and may be one or three or more. However, in order to firmly fix the accommodating portion 81 and the movement restricting portion 83, it is more desirable that the number of both locking portions 84a and 84b is two or more.

Further, the fixing means 84 is not limited to the one shown in the drawing, and for example, the accommodating portion 81 and the movement restricting portion 83 may be fixed by a clip member or the like. However, when a clip member or the like is used, the entire electromagnetic wave suppressing member 8 may become large. By adopting the fixing means 84 composed of the first locking portion 84a and the second locking portion 84b as in the present embodiment, the electromagnetic wave suppressing member 8 can be accommodated in a simple configuration while suppressing the increase in size. It is possible to firmly fix the section 81 and the movement control section 83.

In the wire harness 1, the movement restricting unit 83 is provided on the connector 3 side of the accommodating unit 81, but the movement restricting unit 83 may be provided on the opposite side of the accommodating unit 81 from the connector 3. Whether to provide the movement restricting unit 83 on the connector 3 side or the movement restricting unit 83 on the opposite side to the connector 3 can be appropriately set in consideration of the arrangement layout of the wire harness 1 and the like. Is.

(Actions and effects of embodiments)
As described above, the wire harness 1 according to the present embodiment includes the electric wire 2 and the electromagnetic wave suppressing member 8 attached around the electric wire 2 and having an annular magnetic material core 82, and the electromagnetic wave suppressing member 8 is provided. Is formed separately from the accommodating portion 81 accommodating the magnetic core 82 and the accommodating portion 81, and grips the member covering the periphery of the electric wire 2 or the electric wire 2 and covers the periphery of the electric wire 2 or the electric wire 2. It has a movement restricting unit 83 fixed to, and a fixing means 84 for fixing the accommodating unit 81 and the movement restricting unit 83 to each other.

For example, if the accommodating portion 81 and the movement restricting portion 83 are integrally formed, it may be difficult to insert the electric wire 2 or the like into the electromagnetic wave suppressing member 8. In particular, when the electromagnetic wave suppressing member 8 is fixed to the corrugated tube 9 as in the present embodiment, the inward protrusion 83e fitted in the groove of the corrugated tube 9 interferes with the electromagnetic wave suppressing member 8 (magnetic material core 82). Can be very difficult to install. Further, if the accommodating portion 81 and the movement restricting portion 83 are integrated, the size of the parts may become large, the mold for molding may become large, and the manufacturing cost may increase.

On the other hand, in the present embodiment, since the accommodating portion 81 and the movement restricting portion 83 are separately configured, the clearance between the accommodating portion 81 accommodating the magnetic core 82 and the corrugated pipe 9 is provided. The corrugated tube 9 can be firmly gripped by the movement restricting portion 83 having the inward protrusion 83e while making it large so that the magnetic core 82 can be easily attached. Further, after the electric wire 2 or the like is inserted into the accommodating portion 81, the accommodating portion 81 and the movement restricting portion 83 are fixed to each other by the fixing means 84, so that the magnetic core 82 is passed through the accommodating portion 81 and the movement restricting portion 83. It can be firmly fixed to the electric wire 2 or the like (here, the corrugated tube 9). Further, by separating the accommodating portion 81 and the movement restricting portion 83, the mold for molding can be made smaller, which contributes to the reduction of manufacturing cost.

Further, in the present embodiment, the fixing means 84 is formed on the first locking portion 84a formed of one of the concave grooves or protrusions formed on the inner peripheral surface of the movement restricting portion 83 and the outer peripheral surface of the accommodating portion 81. It is composed of a second locking portion 84b composed of the other of the concave groove or the protrusion, and in a state where the first locking portion 84a and the second locking portion 84b are locked, the electric wire is connected to the movement restricting portion 83. The accommodating portion 81 and the movement restricting portion 83 are fixed to each other by gripping a member (here, a corrugated pipe 9) that covers the periphery of the wire 2 or the electric wire 2. This makes it possible to firmly fix the accommodating portion 81 and the movement restricting portion 83 with a compact and simple configuration. Further, since both the locking portions 84a and 84b are not exposed and are covered with the annular portion 83a, there is an advantage that the fixing means 84 does not easily interfere with the surrounding members.

Further, the movement restricting unit 83 integrally has a fixing unit 83b for fixing the movement restricting unit 83 to the object to be fixed (here, the motor housing 91), so that the electromagnetic wave suppressing member 8 is the electric wire 2. It also serves as a role (role as a clip for fixing the electric wire) to bundle and fix the electric wire 2 to the object to be fixed (here, the motor housing 91), and it is not necessary to separately prepare a member for fixing the electric wire 2 to the object to be fixed. Therefore, it contributes to the simplification of the configuration of the wire harness 1 and the cost reduction.

Furthermore, by using the magnetic core 82 made of a nanocrystalline soft magnetic material, the magnetic core 82 can be made smaller than the ferrite core or the like conventionally used, and a compact and lightweight electromagnetic wave suppression member 8 can be realized. By downsizing the electromagnetic wave suppressing member 8, it becomes easy to arrange the wire harness 1 even in a narrow place, and the degree of freedom in the arrangement layout of the wire harness 1 is improved. Further, by making the electromagnetic wave suppressing member 8 lightweight, it is possible to suppress an increase in the mass of the wire harness 1 when the electromagnetic wave suppressing member 8 is attached, and improve the handleability of the wire harness 1.

Further, the nanocrystalline soft magnetic material is a material whose magnetic properties are likely to change when stress is applied, but the electric wire 2 is bent because the accommodating portion 81 has an inner wall portion 81a that is harder than the electric wire 2. It is possible to prevent a load from being applied to the magnetic material core 82 due to the vibration of the electric wire 2 or the like, and to suppress changes in the magnetic characteristics of the magnetic material core 82.

(Summary of embodiments)
Next, the technical idea grasped from the embodiment described above will be described with reference to the reference numerals and the like in the embodiment. However, the respective reference numerals and the like in the following description are not limited to the members and the like in which the components within the scope of the claims are specifically shown in the embodiment.

[1] The electric wire (2) and an electromagnetic wave suppressing member (8) attached around the electric wire (2) and having an annular magnetic core (82) are provided, and the electromagnetic wave suppressing member (8) is provided. The accommodating portion (81) accommodating the magnetic core (82) and the accommodating portion (81) are formed separately from the accommodating portion (81), and grip the electric wire (2) or a member covering the periphery of the electric wire (2). Then, in order to fix the movement restricting portion (83) fixed to the electric wire (2) or the member covering the periphery of the electric wire (2), the accommodating portion (81), and the movement restricting portion (83) to each other. A wire harness (1) having a fixing means (84).

[2] The fixing means (84) includes a first locking portion (84a) formed of one of a concave groove or a protrusion formed on the inner peripheral surface of the movement restricting portion (83), and the accommodating portion (81). ), The first locking portion (84a) and the second locking portion (84b) are provided with a second locking portion (84b) formed on the outer peripheral surface of the concave groove or the other of the protrusions. By causing the movement restricting portion (83) to grip the electric wire (2) or a member that covers the periphery of the electric wire (2) in a state where the and The wire harness (1) according to [1], which is configured to fix the (83) and the wire harness to each other.

[3] A bellows-shaped corrugated tube (9) that covers the periphery of the electric wire (2) is provided, and the movement restricting portion (83) has an inward protrusion (83e) that protrudes inward, and the inside thereof. The wire harness (1) according to [1] or [2], wherein the protrusion (83e) is fixed to the corrugated tube (9) in a state of being fitted into the groove portion of the corrugated tube (9).

[4] The movement restricting unit (83) integrally has a fixing unit (83b) for fixing the movement restricting unit (83) to the object to be fixed (91), [1] to [3]. ] The wire harness (1) according to any one of the items.

[5] The wire harness (1) according to any one of [1] to [4], wherein the magnetic core (82) is made of a nanocrystalline soft magnetic material.

[6] The wire harness (1) according to any one of [1] to [5], wherein the accommodating portion (81) has an inner wall portion (81a) that is harder than the electric wire (2). ..

Although the embodiments of the present invention have been described above, the embodiments described above do not limit the invention according to the claims. It should also be noted that not all combinations of features described in the embodiments are essential to the means for solving the problems of the invention.

The present invention can be appropriately modified and implemented without departing from the spirit of the present invention.

In the above embodiment, the case where the number of electric wires 2 is three has been described, but the number of electric wires 2 is not limited, and for example, the number of electric wires 2 may be one, two, or four or more.

Further, in the above embodiment, the electromagnetic wave suppressing member 8 is provided so as to cover the periphery of the bundled electric wires 2, but the electromagnetic waves are arranged so as to cover the electric wires 2 arranged in a straight line in the direction orthogonal to the longitudinal direction of the electric wires 2. The restraining member 8 may be provided. In this case, the accommodating portion 81, the magnetic core 82, and the annular portion 83a of the movement restricting portion 83 may have an elliptical shape or a rounded rectangular shape (oval shape).

1 ... Wire harness 2 ... Electric wire 3 ... Connector 31 ... Accommodated member 32 ... Electric wire holding member 4 ... Braided shield 5 ... Housing 6 ... Shield shell 8 ... Electromagnetic wave suppression member 81 ... Accommodating portion 81a ... Inner wall portion 82 ... Magnetic material core 83 ... Movement control unit 83b ... Fixing part 84 ... Fixing means 9 ... Corrugated pipe

Claims (6)

With multiple wires,
An electromagnetic wave suppression member having an annular magnetic core that collectively covers the plurality of electric wires is provided.
The electromagnetic wave suppression member is
An accommodating portion accommodating the magnetic core and
A movement restriction that is formed separately from the accommodating portion, grips the plurality of electric wires or a member that covers the periphery of the plurality of electric wires, and is fixed to the member that covers the plurality of electric wires or the plurality of electric wires. Department and
It has a fixing means for fixing the accommodating portion and the movement restricting portion to each other.
Wire harness. The fixing means is
A first locking portion formed of one of a concave groove or a protrusion formed on the inner peripheral surface of the movement restricting portion, and a first locking portion.
It has a second locking portion made of the other of the concave groove or the protrusion formed on the outer peripheral surface of the housing portion, and has.
In a state where the first locking portion and the second locking portion are locked, the movement restricting portion is made to grip the plurality of electric wires or a member covering the periphery of the plurality of electric wires, whereby the accommodating portion. And the movement control unit are configured to be fixed to each other.
The wire harness according to claim 1. The member that covers the periphery of the plurality of electric wires is a bellows-shaped corrugated tube .
The movement restricting portion has an inward protrusion that protrudes inward, and is fixed to the corrugated pipe in a state where the inward protrusion is fitted into a groove portion of the corrugated pipe.
The wire harness according to claim 1 or 2. The movement restricting portion integrally has a fixing portion for fixing the movement restricting portion to the object to be fixed.
The wire harness according to any one of claims 1 to 3. The magnetic core is made of nanocrystalline soft magnetic material.
The wire harness according to any one of claims 1 to 4. The accommodating portion has an inner wall portion that is harder than the electric wire.
The wire harness according to any one of claims 1 to 5.

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