JP2017070104A - Conducting path and manufacturing method of conducting path - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a conducting path capable of stabilizing a position or an attitude of an electromagnetic wave absorption component relative to an accommodation member that is configured to accommodate a part of a wire in a length direction and consists of a conductive metal, while avoiding the collision of the accommodation member and the electromagnetic wave absorption component, and a manufacturing method thereof.SOLUTION: A conducting path 1 comprises: first to third wires 21 to 23; a metal pipe 3 as an accommodation member that covers partial regions of the first to third wires 21 to 23 in a length direction; a cylindrical electromagnetic wave absorption component 4 with which an insertion hole 40 is formed for inserting the first to third wires 21 to 23 in portions that are not covered by the metal pipe 3, and which absorbs electromagnetic waves radiated from the first to third wires 21 to 23; an elastic member 5 which is interposed between the metal pipe 3 and the electromagnetic wave absorption component 4; and a position fixing member 6 which fixes the electromagnetic wave absorption component 4 to the metal pipe 3 in a state where the electromagnetic wave absorption component 4 is positioned between the position fixing member and an end portion 3b of the metal pipe 3 with the elastic member 5 interposed therebetween.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a conductive path and a manufacturing method thereof, and more particularly to a conductive path including an electromagnetic wave absorbing component for reducing noise radiated from an electric wire and a manufacturing method thereof.

  Conventionally, for example, an electromagnetic wave absorption for reducing noise radiated from an electric wire as a conductive path which is mounted on a vehicle having an electric motor as a driving source for traveling, and has an electric wire for connecting the inverter and the electric motor. Some have parts (see, for example, Patent Document 1).

  The conductive path described in Patent Literature 1 includes three electric wires, a pipe-shaped accommodation member (guide member) made of a conductive metal that covers a partial region in the longitudinal direction of the three electric wires, and an accommodation member. A braided shield that covers the three electric wires and a cylindrical electromagnetic wave absorbing component having an insertion hole through which the three electric wires are inserted. The electromagnetic wave absorbing component is fixed by press-fitting or abutting on the end of the housing member.

JP2015-19464A

  In the conductive path described in Patent Document 1, when the electromagnetic wave absorbing component is brought into contact with the end of the housing member and fixed, when the housing member vibrates as the vehicle travels, the end of the housing member becomes the electromagnetic wave absorbing component. There is a risk that abnormal noise may be generated due to a collision, or a part of the electromagnetic wave absorbing component may be worn. As a countermeasure, for example, it may be possible to fix the electromagnetic wave absorbing component with a predetermined distance from the end of the housing member, but in this case, the position and posture of the electromagnetic wave absorbing component relative to the housing member are not stable. It becomes difficult to fix the electromagnetic wave absorbing component to the housing member.

  The present invention has been made in view of the above circumstances, and the object thereof is to accommodate the electromagnetic wave absorbing component while avoiding a collision between the accommodating member made of a conductive metal that accommodates a part of the longitudinal direction of the electric wire and the electromagnetic wave absorbing component. An object of the present invention is to provide a conductive path capable of stabilizing the position and posture of an electromagnetic wave absorbing component with respect to a member and a method for manufacturing the conductive path.

  In order to solve the above-described problems, the present invention provides a wire, a tubular housing member made of a conductive metal that covers a partial region in the longitudinal direction of the wire, and a portion not covered by the housing member An insertion hole through which the electric wire is inserted, a cylindrical electromagnetic wave absorbing component that absorbs electromagnetic waves radiated from the electric wire, an elastic member interposed between the housing member and the electromagnetic wave absorbing component, and the electromagnetic wave A position fixing member for fixing the electromagnetic wave absorbing component to the accommodating member in a state where the absorbing component is positioned with the elastic member interposed between the absorbing member and an end of the accommodating member. To do.

  In order to solve the above problems, the present invention is covered with an electric wire, a tubular housing member made of a conductive metal that covers a partial region in the longitudinal direction of the electric wire, and the housing member. An insertion hole through which the electric wire of the non-portion is inserted is formed, a cylindrical electromagnetic wave absorbing component that absorbs electromagnetic waves radiated from the electric wire, and an elastic member interposed between the housing member and the electromagnetic wave absorbing component, A conductive path manufacturing method comprising: a position fixing member that fixes the electromagnetic wave absorbing component to the housing member, wherein the elastic member is sandwiched between the electromagnetic wave absorbing component and an end of the housing member. A method for manufacturing a conductive path is provided in which the electromagnetic wave absorbing component is fixed to the housing member by a position fixing member while maintaining the positioned state.

  According to the conductive path and the method for manufacturing the same according to the present invention, the electromagnetic wave absorbing component with respect to the housing member can be prevented from colliding with the electromagnetic wave absorbing component while avoiding a collision between the housing member made of a conductive metal that houses a part of the longitudinal direction of the electric wire. It becomes possible to stabilize the position and posture.

(A) is the schematic which shows the conductive path which concerns on the 1st Embodiment of this invention, an electric motor, and an inverter. (B) is the A section enlarged view of (a) which expands and shows a part of the braided shield of a conductive path. (C) is an enlarged view which shows the edge part of the adhesive tape used for a conductive path. It is an external view which shows the 2nd electric wire holding part of a conductive path. It is sectional drawing which cut | disconnected a part of electrically conductive path along the longitudinal direction. It is a disassembled perspective view which shows an elastic member with electromagnetic wave absorption components. It is sectional drawing which cut | disconnected a part of electrically conductive path which concerns on the 2nd Embodiment of this invention along the longitudinal direction.

[First Embodiment]
A first embodiment of the present invention will be described with reference to FIGS.

  FIG. 1A is a schematic diagram showing a conductive path 1, and an electric motor 91 and an inverter 92 connected by the conductive path 1 according to the first embodiment of the present invention. FIG. 1B is an enlarged view of part A of FIG. 1A showing a part of the second braided shield 72 of the conductive path 1 in an enlarged manner. FIG. 1C is an enlarged view showing an end portion of the adhesive tape 60 used for the conductive path 1. FIG. 2 is an external view showing the second electric wire holding part 12 of the conductive path 1. FIG. 3 is a cross-sectional view of a part of the conductive path 1 cut along the longitudinal direction. FIG. 4 is an exploded perspective view showing the elastic member 5 together with the electromagnetic wave absorbing component 4.

  The conductive path 1 is mounted on a vehicle having an electric motor 91 as a driving source for traveling, and supplies the electric motor 91 with a PWM (Pulse Width Modulation) -controlled driving current output from an inverter 92. This drive current includes harmonic components due to switching of a switching element such as a power transistor. In the present embodiment, the electric motor 91 is a three-phase AC motor. However, the present invention is not limited to this. For example, a DC motor can be used as the electric motor 91.

  The conductive path 1 is not covered with the first to third electric wires 21 to 23, the metal pipe 3 that covers a part of the longitudinal direction of the first to third electric wires 21 to 23, and the metal pipe 3. A cylindrical electromagnetic wave absorbing component 4 in which an insertion hole 40 through which the first to third electric wires 21 to 23 of the portion are inserted is formed; an elastic member 5 interposed between the metal pipe 3 and the electromagnetic wave absorbing component 4; A position fixing member 6 for fixing the electromagnetic wave absorbing component 4 to the metal pipe 3, and first and second braided shields 71 covering the first to third electric wires 21 to 23 which are not covered by the metal pipe 3. , 72.

  The metal pipe 3 is an aspect of the “accommodating member” of the present invention, and has a tubular shape made of a conductive metal such as aluminum. The electromagnetic wave absorbing component 4 absorbs electromagnetic waves radiated from the first to third electric wires 21 to 23. The position fixing member 6 fixes the electromagnetic wave absorbing component 4 to the metal pipe 3 in a state where the electromagnetic wave absorbing component 4 is positioned with the elastic member 5 sandwiched between the end portion of the metal pipe 3. In the present embodiment, the position fixing member 6 is formed by winding an adhesive tape 60 in which an adhesive layer 62 is formed on one surface of a belt-like base material 61 made of a resin such as vinyl chloride. In FIG. 1C, the thickness of the adhesive tape 60 is exaggerated for clarity of explanation.

  Further, the conductive path 1 is provided with a first electric wire holding part 11 fixed to the casing of the electric motor 91 at one end, and a second electric wire holding part 12 fixed to the casing of the inverter 92 at the other end. Is provided. The metal pipe 3 is arrange | positioned between the 1st electric wire holding part 11 and the 2nd electric wire holding part 12, and the 1st thru | or 3rd electric wires 21-23 are exposed from the both ends 3a and 3b, respectively.

  The first braided shield 71 covers the first to third electric wires 21 to 23 that are not covered with the metal pipe 3 between the metal pipe 3 and the first electric wire holding portion 11. The second braided shield 72 covers the first to third electric wires 21 to 23 that are not covered by the metal pipe 3 between the metal pipe 3 and the second electric wire holding portion 12.

  The first to third electric wires 21 to 23 are insulated electric wires in which a core wire made of a highly conductive metal such as copper is covered with an insulator, and electrically drive a three-phase alternating current of U phase, V phase, and W phase. The motor 91 is supplied. As shown in FIG. 1B, the first and second braided shields 71 and 72 are formed by braiding strands 70 made of, for example, tin-plated copper wires in a lattice shape.

  The electromagnetic wave absorbing component 4 is disposed in the vicinity of the end 3 b on the second electric wire holding unit 12 side (inverter 92 side) among the both ends 3 a and 3 b of the metal pipe 3. By arranging the electromagnetic wave absorbing component 4 on the second electric wire holding part 12 side of the metal pipe 3, the electromagnetic wave radiated from the first to third electric wires 21 to 23 is efficiently absorbed by noise generated in the inverter 92. It becomes possible.

  The metal pipe 3 is bent according to the configuration of the vehicle body and fixed to the vehicle body at a plurality of locations. FIG. 1 shows two fixing members 31 and 32 among a plurality of fixing members that fix the metal pipe 3 to the vehicle body. The fixing members 31 and 32 are fixed to mounting portions 93 and 94 provided on the vehicle body by bolts, respectively. In addition, the electromagnetic wave absorbing component 4 is fixed to the mounting portion 95 of the vehicle body by a bracket 81 disposed by a belt-shaped fastening member 80 on the outer periphery of the position fixing member 6. A plurality of bolt insertion holes 810 are formed in the bracket 81, and the bracket 81 is attached to the mounting portion 95 of the vehicle body by bolts that pass through the bolt insertion holes 810.

  The first to third electric wires 21 to 23 have one end connected to the electric motor 91 and the other end connected to the inverter 92. More specifically, one end portions of the first to third electric wires 21 to 23 protruding from the first electric wire holding portion 11 fixed to the casing of the electric motor 91 are connected to a terminal block (not shown) of the electric motor 91. The other end portions of the first to third electric wires 21 to 23 protruding from the second electric wire holding portion 12 fixed to the casing of the inverter 92 are connected to a terminal block (not shown) of the inverter 92.

  As shown in FIG. 2, the second wire holding part 12 is made of a shield shell 120 made of a conductive metal, a part of which is contained in the shield shell 120, and a resin that holds the first to third wires 21 to 23. A resin housing 121, an annular seal member 122 held by the resin housing 121, an intermediate member 123 that sandwiches the braided shield 20 between the shield shell 120, and a belt-like fastening belt 124. Connection terminals 210, 220, and 230 are connected to the respective ends of the first to third electric wires 21 to 23 by, for example, crimping.

  A part of the resin housing 121 is accommodated in the shield shell 120. The shield shell 120 is provided with a flange portion 120 a that is fixed to the casing of the inverter 92.

  One end of the second braided shield 72 is fastened to the outer periphery of the end 3 b of the metal pipe 3 by a fastening belt 702 (see FIG. 3), and the other end is shield shell by the fastening force of the fastening belt 124. It is sandwiched between 120 and the intermediate member 123. Thus, one end of the second braided shield 72 is electrically connected to the metal pipe 3, and the other end is electrically connected to the casing of the inverter 92 via the shield shell 120. The intermediate member 123 is made of, for example, acetate cloth tape, and is wound around the outer periphery of the second braided shield 72 in a ring shape a plurality of times. The fastening belts 124 and 702 are bands made of metal such as stainless steel.

  In addition, although illustration is abbreviate | omitted, the 1st electric wire holding part 11 is also comprised similarly to the 2nd electric wire holding part 12. FIG. One end of the first braided shield 71 is fastened to the outer periphery of the end 3a of the metal pipe 3 by a fastening belt 701 (see FIG. 1) and is electrically connected to the metal pipe 3, and the other end is electrically driven. The motor 91 is electrically connected to the casing.

  As shown in FIGS. 3 and 4, the electromagnetic wave absorbing component 4 includes a first magnetic core 41, a second magnetic core 42, a first rubber member 43, and a second rubber member 44. The insertion hole 40 of the electromagnetic wave absorbing component 4 includes a through hole 410 formed at the center of the first magnetic core 41, a through hole 420 formed at the center of the second magnetic core 42, and the first rubber member 43. This is formed by coupling through holes 430 formed in the central part of each.

  As the first magnetic core 41 and the second magnetic core 42, a high magnetic permeability annular core member such as a ferrite core, an amorphous core, or a permalloy core can be used. In the present embodiment, the first magnetic core 41 and the second magnetic core 42 are made of soft ferrite (eg, manganese zinc ferrite, nickel zinc ferrite, copper zinc ferrite, etc.) exhibiting soft magnetism. In addition, hexagonal ferrite (hard ferrite), garnet ferrite, or cobalt ferrite can be used as the first magnetic core 41 and the second magnetic core 42.

  The first magnetic core 41 and the second magnetic core 42 are arranged in parallel along the longitudinal direction of the first to third electric wires 21 to 23. The first magnetic core 41 may be formed as an annular member, and may be formed in an annular shape by combining a pair of members having a semicircular cross section, for example. The same applies to the second magnetic core 42.

  The first magnetic core 41 and the second magnetic core 42 absorb electromagnetic waves (electromagnetic noise) radiated from the first to third electric wires 21 to 23, and the energy of the electromagnetic waves is converted into mechanical energy such as vibration, Convert to heat energy. Thereby, the bad influence which the electromagnetic waves radiated | emitted from the 1st thru | or 3rd electric wires 21-23 has on the control apparatus etc. which were arrange | positioned around is reduced.

  The first rubber member 43 is an annular plate-like member sandwiched between the first magnetic core 41 and the second magnetic core 42, and the electromagnetic waves of the first magnetic core 41 and the second magnetic core 42. It suppresses the wear caused by the vibration caused by the absorption of the vehicle and the vibration of the vehicle. The second rubber member 44 is disposed on the outer peripheral side of the first magnetic core 41 and the second magnetic core 42 with its inner peripheral surface facing the outer peripheral surfaces of the first magnetic core 41 and the second magnetic core 42. It is the made cylindrical member.

  The first rubber member 43 and the second rubber member 44 are integrated with the first magnetic core 41 and the second magnetic core 42 by, for example, bonding. The outer diameter of the electromagnetic wave absorbing component 4 is, for example, 40 to 70 mm.

  In the present embodiment, the inner diameter of the insertion hole 40 is formed larger than the thickness of the wire bundle when the first to third wires 21 to 23 are tightly bundled. Thereby, when the conductive path 1 is assembled, the electromagnetic wave absorbing component 4 can be easily moved along the longitudinal direction of the first to third electric wires 21 to 23. The first to third electric wires 21 to 23 have the same outer diameter, and the outer diameter is, for example, 10 to 40% (10% or more and 40% or less) of the inner diameter of the insertion hole 40.

  In the present embodiment, as shown in FIG. 3, the second braided shield 72 covers the outer periphery of the electromagnetic wave absorbing component 4 and the elastic member 5. In the second braided shield 72, the inner diameter of the portion corresponding to the outer peripheral side of the electromagnetic wave absorbing component 4 is expanded.

  As shown in FIGS. 3 and 4, the elastic member 5 has an annular shape in which a center hole 50 through which the first to third electric wires 21 to 23 are inserted is formed at the center. In the present embodiment, the axial cross section of the elastic member 5 is rectangular. The elastic member 5 has an outer diameter smaller than the outer diameter of the electromagnetic wave absorbing component 4, and the inner diameter of the center hole 50 is substantially the same as the inner diameter of the insertion hole 40 of the electromagnetic wave absorbing component 4.

  The elastic member 5 is made of an elastic resin or rubber, and more specifically, for example, natural rubber (NR), styrene-butadiene rubber (SBR), isoprene rubber (IR), butadiene rubber (BR), chloroprene rubber ( CR), acrylonitrile-butadiene rubber (NBR), butyl rubber (isobutylene-isoprene rubber (IIR), ethylene-propylene rubber (EPM), ethylene-propylene-diene rubber (EPDM), urethane rubber (U), silicone rubber (silicone rubber ( Si, Q)) or fluorine rubber (FKM) The length of the elastic member 5 in the axial direction is, for example, 10 to 100 mm.

  The adhesive tape 60 is wound around the outer periphery of the electromagnetic wave absorbing component 4 and the elastic member 5 with the adhesive layer 62 inside. In the present embodiment, the second braided shield 72 is interposed between the adhesive tape 60 and the electromagnetic wave absorbing component 4 and the elastic member 5, and the adhesive layer 62 is adhered to the second braided shield 72. In addition, the adhesive tape 60 is wound in a range from the end 3 b of the metal pipe 3 to the outer periphery of the first to third electric wires 21 to 23 on the second electric wire holding part 12 side than the electromagnetic wave absorbing component 4. A position fixing member 6 is configured. Thereby, the electromagnetic wave absorbing component 4 is fixed to the metal pipe 3 by the position fixing member 6.

  The electromagnetic wave absorbing component 4 is positioned in contact with the elastic member 5. In the elastic member 5, one end surface 5 a in the axial direction is in contact with the end portion 3 b of the metal pipe 3, and the other end surface 5 b is in contact with the opening end surface 41 a of the through hole 410 in the first magnetic core 41 of the electromagnetic wave absorbing component 4. It touches.

(Manufacturing method of conductive path 1)
Next, a method for manufacturing the conductive path 1 will be described. In the electromagnetic wave absorbing component 4, the first magnetic core 41, the second magnetic core 42, the first rubber member 43, and the second rubber member 44 are assembled in advance. Moreover, the procedure shown below is shown as an example of the manufacturing method of the conductive path 1, and the conductive path 1 can be manufactured even if it does not necessarily follow this procedure.

  First, an insulated wire formed by coating a core wire with an insulator is cut to a predetermined length to form first to third wires 21 to 23, and the first to third wires 21 to 23 are bundled to form a metal pipe. 3 is inserted. Next, the end portions of the first to third electric wires 21 to 23 arranged on the inverter 92 side are inserted into the elastic member 5, and subsequently inserted into the electromagnetic wave absorbing component 4.

  Thereafter, the first and third braided shields 71 and 72 are respectively put on the first to third electric wires 21 to 23 exposed from the both end portions 3a and 3b of the metal pipe 3, and one end of the first braided shield 71 is tightened. The end of the second braided shield 72 is fixed to the end 3b of the metal pipe 3 by the fastening belt 702. Furthermore, the 1st electric wire holding part 11 and the 2nd electric wire holding part 12 are assembled after that.

  Next, the electromagnetic wave absorbing component 4 is pressed against the end 3 b side of the metal pipe 3, and the elastic member 5 is sandwiched between the end 3 b of the metal pipe 3 and the electromagnetic wave absorbing component 4. Thereby, the electromagnetic wave absorbing component 4 is positioned with respect to the metal pipe 3. Then, the electromagnetic wave absorbing component 4 is kept positioned with the elastic member 5 sandwiched between the end portion 3 b of the metal pipe 3, the adhesive tape 60 is wound, and the electromagnetic wave absorbing component 4 is moved by the position fixing member 6. Fix to the metal pipe 3. Thus, the assembly of the conductive path 1 is completed.

(Operation and effect of the first embodiment)
According to the first embodiment described above, the following operations and effects can be obtained.

(1) The electromagnetic wave absorbing component 4 is fixed to the metal pipe 3 by the position fixing member 6 formed by winding the adhesive tape 60 in a state where the elastic member 5 is positioned between the end portion 3b of the metal pipe 3 Therefore, the posture of the electromagnetic wave absorbing component 4 when the adhesive tape 60 is wound is stabilized, the workability at the time of assembling the conductive path 1 is improved, and the positioning accuracy of the electromagnetic wave absorbing component 4 is increased. That is, since the electromagnetic wave absorbing component 4 is fixed with the elastic member 5 being positioned between the end 3 b of the metal pipe 3, the position and posture of the electromagnetic wave absorbing component 4 with respect to the metal pipe 3 can be stabilized. it can.

(2) Since the elastic member 5 is interposed between the electromagnetic wave absorbing component 4 and the metal pipe 3 and the electromagnetic wave absorbing component 4 and the metal pipe 3 are not in direct contact with each other, the metal pipe 3 vibrates as the vehicle travels. In addition, the collision of the end 3b of the metal pipe 3 with the electromagnetic wave absorbing component 4 can be avoided, and generation of abnormal noise and wear of the electromagnetic wave absorbing component 4 can be suppressed.

(3) Since the elastic member 5 has an annular shape having the central hole 50 at the center, the elastic member 5 is easy to manufacture and supports the electromagnetic wave absorbing component 4 over the entire circumferential direction centering on the insertion hole 40. Therefore, the effect of stabilizing the position and posture of the electromagnetic wave absorbing component 4 is sufficiently exhibited.

(4) Since the adhesive tape 60 is used as the position fixing member 6 that fixes the electromagnetic wave absorbing component 4 to the metal pipe 3, the cost of the component can be suppressed.

(5) Since the second braided shield 72 covers the outer periphery of the electromagnetic wave absorbing component 4, the position and posture of the electromagnetic wave absorbing component 4 are also stabilized by the second braided shield 72.

[Second Embodiment]
Next, a conductive path 1A according to a second embodiment of the present invention will be described with reference to FIG.

  FIG. 5 is a cross-sectional view of a part of the conductive path 1A cut along the longitudinal direction. In FIG. 5, members and the like that are the same as those described in the first embodiment are denoted by the same reference numerals as those used in FIGS. 1 to 4, and redundant descriptions are omitted.

  In the conductive path 1 according to the first embodiment, the second braided shield 72 covers the outer periphery of the electromagnetic wave absorbing component 4 and the elastic member 5, but the conductive path 1A according to the present embodiment is the second The braided shield 72 is inserted through the insertion hole 40 of the electromagnetic wave absorbing component 4 and the center hole 50 of the elastic member 5. One end portion of the second braided shield 72 inserted through the central hole 50 of the elastic member 5 extends from between one end surface 5a of the elastic member 5 and the end portion 3b of the metal pipe 3 to the outer periphery of the metal pipe 3, and is tightened. The belt 702 is fastened to the outer periphery of the metal pipe 3. The adhesive tape 60 adheres to the outer peripheral surfaces of the electromagnetic wave absorbing component 4 and the elastic member 5, and from the outer periphery of the end portion 3b of the metal pipe 3 to the first electric wire through the second electric wire holding portion 12 side from the outer periphery of the electromagnetic wave absorbing component 4. The position fixing member 6 is configured by being wound around a range that reaches the outer periphery of the electric wires 21 to 23.

  Also in the conductive path 1A according to the present embodiment, the electromagnetic wave absorbing component 4 is positioned with the elastic member 5 sandwiched between the end 3b of the metal pipe 3 as in the conductive path 1 according to the first embodiment. In this state, it is fixed by the position fixing member 6. At the time of manufacturing the conductive path 1A, the electromagnetic wave absorbing component 4 is kept positioned with the elastic member 5 sandwiched between the end 3b of the metal pipe 3 and the adhesive tape 60 is wound around.

  Also according to the present embodiment, the same operations and effects as the operations (1) to (4) described in the first embodiment can be obtained. Further, since the adhesive layer 62 of the adhesive tape 60 adheres to the outer peripheral surface of the electromagnetic wave absorbing component 4 (second rubber member 44), the electromagnetic wave absorbing component 4 is more firmly fixed.

(Summary of embodiment)
Next, the technical idea grasped from the embodiment described above will be described with reference to the reference numerals in the embodiment. However, each reference numeral in the following description does not limit the constituent elements in the claims to members or the like specifically shown in the embodiment.

[1] Tubular housing member (metal pipe 3) made of conductive metal that covers the electric wires (first to third electric wires 21 to 23) and a partial region in the longitudinal direction of the electric wires (21 to 23). And an insertion hole (40) through which the electric wires (21 to 23) in a portion not covered by the housing member (3) are inserted, and a cylinder that absorbs electromagnetic waves radiated from the electric wires (21 to 23) The electromagnetic wave absorbing component (4), the elastic member (5) interposed between the housing member (3) and the electromagnetic wave absorbing component (4), and the electromagnetic wave absorbing component (4) are the housing member (3). ), The position fixing member (6) for fixing the electromagnetic wave absorbing component (4) to the housing member (3) in a state where the elastic member (5) is positioned between the end portion (3b). ), And a conductive path (1, 1A).

[2] The conductive path (1, 1) according to [1] 1, wherein the elastic member (5) has an annular shape in which a central hole (50) through which the electric wires (21 to 23) are inserted is formed in a central portion. 1A).

[3] The position fixing member (6) is an adhesive tape having an adhesive layer (62), and the adhesive layer (62) is disposed on the outer periphery of the electromagnetic wave absorbing component (4) and the elastic member (5). The conductive path (1, 1A) according to [1] or [2], wherein the conductive path is wound around.

[4] It has a braided shield (second braided shield 72) that covers the portions of the electric wires (21 to 23) that are not covered by the housing member (3), and the braided shield (72) absorbs the electromagnetic wave. The outer periphery of the component (4) and the elastic member (5), and one end thereof is fastened to the outer periphery of the housing member (3), according to any one of the above [1] to [3] Conductive path (1).

[5] It has a braided shield (second braided shield 72) that covers the portions of the electric wires (21 to 23) that are not covered by the housing member (3), and the braided shield (72) absorbs the electromagnetic wave. [1] The part (4) is inserted through the insertion hole (40) and the central hole (50) of the elastic member (5), and one end is fastened to the outer periphery of the housing member (3). ] To [3], the conductive path (1A) according to any one of the above.

[6] An electric wire (21-23), a tubular housing member (3) made of a conductive metal covering a partial region in the longitudinal direction of the electric wires (21-23), and the housing member (3). An insertion hole (40) for inserting the uncovered portion of the electric wires (21 to 23) is formed, and a cylindrical electromagnetic wave absorbing component (4) for absorbing electromagnetic waves radiated from the electric wires (21 to 23); An elastic member (5) interposed between the housing member (3) and the electromagnetic wave absorbing component (4), and a position fixing member for fixing the electromagnetic wave absorbing component (4) to the housing member (3) (6), wherein the electromagnetic wave absorbing component (4) is disposed between the elastic member (5) and the end (3b) of the housing member (3). ), And the electromagnetic wave absorbing component (4) is fixed to the position fixing portion. Method for producing a conductive path fixed relative to said housing member (3) by (6) (1, 1A).

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

  Further, the present invention can be appropriately modified and implemented without departing from the spirit of the present invention. For example, in the above-described embodiment, the case where the conductive paths 1 and 1A have the first and second braided shields 71 and 72 has been described. However, the first braided shield 71 may not be provided. However, in this case, it is desirable to shorten the distance between the end portion 3 a of the metal pipe 3 and the first electric wire holding portion 11.

DESCRIPTION OF SYMBOLS 1,1A ... Conductive path 21-23 ... 1st thru | or 2nd electric wire 3 ... Metal pipe (accommodating member)
4 ... Electromagnetic wave absorbing component 40 ... Insertion hole 5 ... Elastic member 50 ... Center hole 6 ... Position fixing member 60 ... Adhesive tape 61 ... Base material 62 ... Adhesive layer 72 ... Second braided shield (braided shield)

Claims (6)

Electric wires,
A tubular housing member made of a conductive metal covering a partial region in the longitudinal direction of the electric wire;
An insertion hole through which the electric wire of the portion not covered with the housing member is inserted is formed, and a cylindrical electromagnetic wave absorbing component that absorbs electromagnetic waves radiated from the electric wire,
An elastic member interposed between the housing member and the electromagnetic wave absorbing component;
A position fixing member for fixing the electromagnetic wave absorbing component to the accommodating member in a state where the electromagnetic wave absorbing component is positioned with the elastic member sandwiched between the end of the accommodating member;
Conductive path with. The elastic member is a ring in which a central hole through which the electric wire is inserted is formed in a central part.
The conductive path according to claim 1. The position fixing member is an adhesive tape having an adhesive layer, and is wound around the electromagnetic wave absorbing component and the elastic member with the adhesive layer inside.
The conductive path according to claim 1 or 2. A braided shield that covers the electric wire in a portion not covered by the housing member;
The braided shield covers the outer periphery of the electromagnetic wave absorbing component and the elastic member, and one end is fastened to the outer periphery of the housing member,
The conductive path according to any one of claims 1 to 3. A braided shield that covers the electric wire in a portion not covered by the housing member;
The braided shield is inserted through the insertion hole of the electromagnetic wave absorbing component and the central hole of the elastic member, and one end is fastened to the outer periphery of the housing member.
The conductive path according to any one of claims 1 to 3. Electric wires,
A tubular housing member made of a conductive metal covering a partial region in the longitudinal direction of the electric wire;
An insertion hole through which the electric wire of the portion not covered with the housing member is inserted is formed, and a cylindrical electromagnetic wave absorbing component that absorbs electromagnetic waves radiated from the electric wire,
An elastic member interposed between the housing member and the electromagnetic wave absorbing component;
A method of manufacturing a conductive path comprising a position fixing member for fixing the electromagnetic wave absorbing component to the housing member,
Maintaining a state where the electromagnetic wave absorbing component is positioned between the elastic member and the end of the housing member, and a conductive path for fixing the electromagnetic wave absorbing component to the housing member by a position fixing member Production method.

Images