JP6593275B2 - Electrical parts for vehicles - Google Patents

Description

  The present invention relates to a vehicle electrical component mounted on a vehicle.

  2. Description of the Related Art Conventionally, there is a vehicle air conditioner as one type of vehicle electrical components mounted on a vehicle. Some vehicle air conditioners include an HVAC (that is, an air conditioning unit) that air-conditions a vehicle interior, and is configured by combining a plurality of separate resin cases. Specifically, in each resin case, an electrical component such as an actuator for driving the air distribution and temperature control door, a blower motor, and a temperature sensor are arranged. And in such a vehicle air conditioner, by connecting each electrical component arranged in a plurality of resin cases to a wire harness routed by an air conditioning unit, power supply and signal transmission via the wire harness Transmission / reception and the like are performed with a control ECU or the like.

  Here, since the vehicle air conditioner as described above is usually manufactured by manually assembling the wire harness to the case, it cannot be efficiently manufactured. Therefore, as a vehicle air conditioner that can be efficiently manufactured, a vehicle air conditioner having a configuration in which a plurality of conductive wirings are embedded in a resin wall constituting a resin case (for example, a vehicle air conditioner described in Patent Document 1) has been proposed. . In this vehicle air conditioner, the function of the wire harness is integrated with the resin case. The vehicle air conditioner having such a configuration can be easily manufactured. That is, when the resin case is formed by injection molding, the resin case in which the conductive wiring is embedded can be easily manufactured by forming the resin wiring so that the conductive wiring is covered and fixed by the resin.

JP 2005-219546 A

  By the way, in an earlier application (Japanese Patent Application No. 2006-26065) by the present applicant, as an invention for performing electrical connection between conductive wirings formed in each of a plurality of resin cases in the vehicle air conditioner as described above. The one using non-contact power transmission has been proposed. The vehicle air conditioner includes a plurality of conductive wirings and a wireless transmission coil connected to the conductive wirings on each surface of the plurality of resin cases, and between the wireless transmission coils provided in each resin case. Send or receive radio waves or power with. Specifically, in this vehicle air conditioner, a current is caused to flow through any one of the plurality of resin cases, and an electromagnetic field is generated around a coil provided in the same resin case and connected to the conductive wires. Magnetic resonance is performed between the coil and a coil provided in another resin case. And by this magnetic resonance, an electric current is generated in the conductive wiring of the other resin case, and electrical connection between the conductive wirings is performed. In non-contact power transmission, it is necessary to pass an alternating current through the conductive wiring.

  Here, in the vehicular electrical component using such non-contact power transmission, since it is necessary to flow an alternating current through the conductive wiring, the time differentiation of the magnetic field generated by the alternating current (that is, the change of the magnetic field) The problem is that electromagnetic noise is generated.

  In view of the above points, an object of the present invention is to provide a configuration in which generation of electromagnetic noise is suppressed in an electrical component for a vehicle using non-contact power transmission.

  In order to achieve the above object, according to the first to seventh aspects of the present invention, the vehicle electrical component has the following configuration. That is, the vehicle electrical component includes a first member (21) and a second member (22) connected to the first member. The first member includes a first element (21e) for wireless transmission, a wiring part (21d) for wiring, and a first wall part (21a) that holds the first element and the wiring part. The second member includes a second element (22b) for wireless transmission that propagates an alternating current with the first element, a second element conductive wiring (22c, 22d) connected to the second element, and The second wall portion (22a) that holds the second element and the second element conductive wiring and is fixed to the first wall portion is provided. The wiring portion has 2n wiring layers (211d, 212d, 213d, 214d), and the 2n wiring layers are stacked one by one in order from the first wall portion side. Note that n is a natural number. Each of the 2n wiring layers includes one end side conductive wiring (21b) connected to one end (21ea) of the first element, and the other end side conductive wiring (21c) connected to the other end (21eb) of the first element. And an insulating portion (211x, 212x, 213x, 214x) that covers the one end side conductive wiring and the other end side conductive wiring and has electrical insulation. In any two adjacent wiring layers of the 2n wiring layers, in one wiring layer of the two wiring layers, one end side conductive wiring is arranged on a predetermined one side and the other end The side conductive wiring is arranged on the predetermined other side. Further, in any two adjacent wiring layers of the 2n wiring layers, the other wiring layer of the two wiring layers has the one end side conductive wiring disposed on the predetermined other side and the other end. The side conductive wiring is arranged on a predetermined one side. Note that the predetermined cross section of the wiring portion when the wiring portion is cut in the stacking direction (DR1) of the 2n wiring layers is the stacking cross section, and is a predetermined direction that intersects the stacking direction in the direction of the straight line included in the stacking cross section. The direction is the stacking crossing direction (DR2). The predetermined one side (S1) is one side in the stacking crossing direction, and the predetermined other side (S2) is the other side in the stacking crossing direction.

  For this reason, in this vehicle air conditioner, generation | occurrence | production of the electromagnetic noise resulting from the alternating current which flows into the some one end side conductive wiring and several other end side conductive wiring contained in a wiring part is suppressed.

  In addition, the code | symbol in the bracket | parenthesis of each means described in this column and the claim shows the correspondence with the specific means as described in embodiment mentioned later.

It is a perspective view which shows the vehicle air conditioner which concerns on 1st Embodiment. It is a perspective view which expands and shows the range enclosed by the code | symbol A in FIG. 1 in the vehicle air conditioner which concerns on 1st Embodiment. It is a figure which shows the detail of the periphery of the 1st coil in the vehicle air conditioner which concerns on 1st Embodiment. It is a figure which shows the cross section of the wiring part in 1st Embodiment. It is a figure which shows the electric circuit containing the 1st coil and 2nd coil in 1st Embodiment. It is a figure which shows typically the cross section of four conductive wiring shown in FIG. FIG. 7 is a diagram corresponding to FIG. 6 in a comparative example. It is a figure which shows the cross section of the metal mold | die used for manufacture of the vehicle air conditioner which concerns on 1st Embodiment. It is a figure which shows the cross section of the metal mold | die used at the next process of the process shown in FIG. It is a figure which shows the cross section of the metal mold | die used at the next process of the process shown in FIG. It is a figure which shows the cross section of the metal mold | die used at the next process of the process shown in FIG. It is a figure which shows the cross section of the metal mold | die used at the next process of the process shown in FIG. It is a figure which shows the cross section of the workpiece | work in manufacture of the 1st wall part and wiring part in 1st Embodiment. It is a figure which shows the cross section of the workpiece | work in the next process of the process shown in FIG. It is a figure which shows the cross section of the workpiece | work in the next process of the process shown in FIG. It is a figure which shows the cross section of the workpiece | work in the next process of the process shown in FIG. It is a figure which shows the XVII-XVII cross section in FIG. 19 about the wiring part in 2nd Embodiment. It is a figure which shows the XVIII-XVIII cross section in FIG. 19 about the wiring part in 2nd Embodiment. It is a figure which shows the XIX-XIX cross section in FIG. 18 about the wiring part in 2nd Embodiment. It is a figure which shows typically the cross section of eight conductive wiring shown in FIG. It is a figure which shows the cross section of the metal mold | die used for manufacture of the vehicle air conditioner which concerns on 2nd Embodiment. It is a figure which shows the cross section of the metal mold | die used at the next process of the process shown in FIG. It is a figure which shows the cross section of the metal mold | die used at the next process of the process shown in FIG. It is a figure which shows the cross section of the metal mold | die used at the next process of the process shown in FIG. It is a figure which shows the cross section of the metal mold | die used at the next process of the process shown in FIG. It is a figure which shows the cross section of the metal mold | die used at the next process of the process shown in FIG. It is a figure which shows the cross section of the metal mold | die used at the next process of the process shown in FIG. It is a figure which shows the cross section of the metal mold | die used at the next process of the process shown in FIG. It is a figure which shows the cross section of the metal mold | die used at the next process of the process shown in FIG. It is a figure which shows the cross section of the workpiece | work in manufacture of the 1st wall part and wiring part in 2nd Embodiment. It is a figure which shows the cross section of the workpiece | work in the next process of the process shown in FIG. It is a figure which shows the cross section of the workpiece | work in the next process of the process shown in FIG. It is a figure which shows the cross section of the workpiece | work in the next process of the process shown in FIG. It is a figure which shows the cross section of the workpiece | work in the next process of the process shown in FIG. It is a figure which shows the cross section of the workpiece | work in the process following the process shown in FIG. It is a figure which shows the cross section of the workpiece | work in the next process of the process shown in FIG. It is a figure which shows the cross section of the workpiece | work in the next process of the process shown in FIG.

  Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In the following embodiments, parts that are the same or equivalent to each other will be described with the same reference numerals.

(First embodiment)
The vehicle air conditioner 1 according to the first embodiment of the present disclosure will be described with reference to FIGS. In the present embodiment, a vehicle air conditioner 1 that air-conditions a vehicle interior is shown as an example of a vehicle electrical component.

  The vehicle air conditioner 1 according to the present embodiment is a device that takes in vehicle interior air or vehicle exterior air into the vehicle interior, adjusts the temperature of the taken-in air, and blows it out into the vehicle interior. As shown in FIG. 1, the vehicle air conditioner 1 includes a main unit 2, a blower unit 3, and an inside / outside air switching device 4. In the following description, the air in the passenger compartment is referred to as inside air, and the air outside the passenger compartment is referred to as outside air. Moreover, arrow Y1 in FIG. 1 has shown the up-down direction in the state which mounted the vehicle air conditioner 1 in the vehicle.

  First, the configuration, operation, and effect of the vehicle air conditioner 1 according to the present embodiment will be described with reference to FIGS. FIG. 2 shows the vehicle air conditioner 1 in a state where the vicinity of the fitting portion between the case member 21 and the case member 22 is cut by a plane orthogonal to the fitting surface 21g.

  The main unit 2 includes a case member 21, a case member 22, a case member 23, and various air conditioning devices housed in the case members 21 to 23. The case member 21, the case member 22, and the case member 23 are each made of a material such as an insulating resin (for example, polypropylene) that is excellent in elasticity and strength, and are assembled and assembled together. Yes. The various air conditioning equipment includes a cooling heat exchanger (not shown) that cools the air blown from the blower unit 3, a heating heat exchanger (not shown) that heats the air blown from the blower unit 3, and an air (not shown) These include a mix door, an air volume adjusting door (not shown), and the electrical component 24 shown in FIG. The electric component 24 is an actuator that drives an air mix door or an air volume adjusting door, an electric blower motor, a temperature sensor, and the like. The main unit 2 is disposed at the approximate center in the vehicle left-right direction of the vehicle.

  As shown in FIG. 1, the case member 21 includes a wiring portion 21d for wiring and a first coil 21e, and a first wall portion 21a that holds both the wiring portion 21d and the first coil 21e. The case member 21 has a pedestal portion 21f that extends in a direction parallel to the fitting surface 21g.

  As shown in FIGS. 1 and 2, the wiring portion 21d is formed on the surface 21z of the first wall portion 21a. As shown in FIG. 2, in the present embodiment, the wiring portion 21d has two wiring layers 211d and 212d. Specifically, as shown in FIG. 4, the wiring portion 21d is configured by laminating the wiring layer 211d and the wiring layer 212d in this order from the first wall portion 21a side.

  The wiring portion 21d includes a plurality of conductive wirings 21b connected to one end 21ea of the first coil 21e and a plurality of conductive wirings 21c connected to the other end 21eb of the first coil 21e. Each of the plurality of conductive wires 21b and the plurality of conductive wires 21c is made of a conductive material such as aluminum, silver, carbon, or copper. Specifically, the plurality of conductive wires 21b connected to the one end 21ea of the first coil 21e are a conductive wire 211b and a conductive wire 212b. The plurality of conductive wires 21c connected to the other end 21eb of the first coil 21e are a conductive wire 211c and a conductive wire 212c.

  As described above, the wiring portion 21d in the present embodiment has the two wiring layers 211d and 212d, and the two wiring layers 211d and 212d are stacked one by one in order from the first wall portion 21a side. It is configured. Specifically, the wiring layer 211d and the wiring layer 212d are laminated in this order from the first wall portion 21a side. The detailed configuration of the wiring part 21d will be described later.

  As shown in FIG. 5, the conductive wirings 21 c and 21 d arranged on the case member 21 are connected to the electrical component 24.

  The first coil 21 e is a coil for wireless transmission for electrical connection with the conductive wirings 22 c and 22 d disposed on the case member 22. As shown in FIGS. 2 and 3, the first coil 21e has one end 21ea connected to the plurality of one end side conductive wirings 21b and the other end 21eb connected to the plurality of other end side conductive wirings 21c. The conductive wirings 22c and 22d correspond to second element conductive wirings.

  The first coil 21e is disposed inside the pedestal portion 21f. The first coil 21e is disposed around the surface of the pedestal 21f opposite to the side of the fitting surface 21g.

  The first coil 21 e is formed at a position that is affected by the magnetic field generated by the second coil 22 b disposed on the case member 22.

  The 1st wall part 21a is comprised with the high intensity | strength insulating resin (for example, polypropylene) which has elasticity. The first wall portion 21a is a fitting surface 21g that is a surface brought into contact with the second wall portion 22a that is a part of the case member 21, and a concave portion 21h that is formed to be recessed from the fitting surface 21g. have. The recess 21h is recessed in a direction intersecting with the fitting surface 21g.

  The case member 21 is coupled to the case member 22 by fixing the first wall portion 21 a to the second wall portion 22 a that is a part of the case member 22.

  As shown in FIG. 1, the case member 22 includes a second coil 22b and conductive wirings 22c and 22d. The case member 22 has a second wall portion 22a that holds the second coil 22b and the conductive wirings 22c and 22d and is fixed to the first wall portion 21a. The case member 22 has a pedestal portion 22e extending in a direction parallel to the fitting surface 22f. The second coil 22 b is formed at a position that is affected by the magnetic field generated by the first coil 21 e disposed on the case member 21. As shown in FIG. 5, the conductive wiring 22 c is connected to one pole of the power supply 25, and the conductive wiring 22 d is connected to the other pole of the power supply 25.

  The second coil 22b is a coil for wireless transmission for performing electrical connection with the conductive wirings 21b and 21c arranged on the case member 21. The second coil 22b is disposed inside the pedestal portion 22e. The 2nd coil 22b is arrange | positioned in the periphery of the surface on the opposite side to the fitting surface 22f side in the base part 22e.

  The 2nd wall part 22a is comprised with the high intensity | strength insulating resin (for example, polypropylene) which has elasticity. The second wall portion 22a is formed so as to protrude from the fitting surface 22f, which is a surface brought into contact with the first wall portion 21a that is a part of the case member 21, and the fitting surface 22f. It has a protrusion 22g. The protrusion 22g protrudes in a direction intersecting with the fitting surface 22f and has a shape corresponding to the shape of the recess 21h so as to fit in the recess 21h of the first wall 21a.

  The case member 22 is fixed to the case member 21 by fixing the second wall portion 22 a to the first wall portion 21 a that is a part of the case member 21.

  The case member 21 and the case member 22 are fixed to each other by inserting and assembling the protruding portion 22g formed in the case member 22 into the recess 21h formed in the case member 21. In the present embodiment, the labyrinth seal structure is formed by the recess 21 h formed in the case member 21 and the protrusion 22 g formed in the case member 22, so that the sealing performance of the fitting portion between the case member 21 and the case member 22 is formed. Is secured.

  In the present embodiment, an alternating current is propagated from one of the first coil 21e and the second coil 22b to the other by magnetic resonance in the first coil 21e and the second coil 22b. Thus, in the vehicle air conditioner 1 according to the present embodiment, the resonance wireless power feeding technique using the first coil 21e and the second coil 22b causes the case member 21 to have 21b and 21c formed on the case member 21. Wireless power transmission is performed between the formed 22c and 22d.

  Here, a detailed configuration of the first coil 21e will be described with reference to FIG. The second coil 22b has the same configuration. FIG. 3 is a view of the first coil 21e seen from the direction of arrow B in FIG. As shown in FIG. 3, the first coil 21e has a coil pattern 21ez, an insulating film 21ec, and a lead pattern 21ey.

  The coil pattern 21ez is a part that functions as an antenna, and is formed on a surface parallel to the fitting surface 21g of the case member 21. The coil pattern 21ez is formed in a spiral shape while being substantially entirely embedded in the insulating film 21ec. One end on the spiral outer side of the coil pattern 21ez is the other end 21eb of the first coil 21e. The coil pattern 21ez is connected to the conductive wiring 213c. Note that the coil pattern 21ez is not necessarily formed on a surface parallel to the fitting surface 21g of the case member 21.

  One end of the lead pattern 21ey is one end 21ea of the first coil 21e. The lead pattern 21ey is formed on the surface opposite to the surface on which the coil pattern 21ez is formed in the insulating film 21ec.

  As shown in FIG. 3, the insulating film 21ec is provided in order to prevent a short circuit between the coil pattern 21ez and the lead pattern 21ey. The insulating film 21ec is formed so as to cover the periphery of one end on the spiral center side of the coil pattern 21ez. That is, the insulating film 21ec is formed outside the circular region 21ed centering on one end of the coil pattern 21ez on the spiral center side of the insulating film 21ec. For this reason, the part located inside the circular area | region 21ed in the coil pattern 21ez is exposed to the surface.

  The lead pattern 21ey is formed so as to connect one end on the spiral center side of the coil pattern 21ez and the conductive wiring 213b.

  In the configuration described above, when an alternating current is passed through the conductive wirings 21b and 21c formed in the case member 21, an electromagnetic field is formed around the coil through which the current is passed, and the other case member 22 in the formed electromagnetic field An alternating current is generated in the first coil 21e by magnetic resonance.

  In the vehicle air conditioner 1 according to the present embodiment, the alternating current propagates from the conductive wirings 21 b and 21 c formed on the case member 21 to the conductive wirings 22 c and 22 d formed on the case member 22 in this way. The alternating current propagated to the conductive wirings 22 c and 22 d formed on the case member 22 is used as a power source for the electrical component 24. In addition, this alternating current can be converted into a direct current by a rectifier circuit built in the electrical component 24 and used.

  In the present embodiment, power supply or signal transmission / reception to each of the electrical components 24 is performed via the conductive wirings 21b, 21c, 22c, and 22d with the wireless power transmission. In the present embodiment, an alternating current supplied from the power supply 25 to the conductive wirings 22c and 22d is wirelessly transmitted from the second coil 22b to the first coil 21e and supplied to the electrical component 24 via the plurality of conductive wirings 21b and 21c. To do.

  The blower unit 3 is a unit that includes an electric blower (not shown) inside and blows air to the main unit 2 by the electric blower. The electric blower sucks the inside air or outside air introduced from the inside / outside air switching device 4 and blows the air toward the vehicle interior. The blower unit 3 is usually disposed closer to the passenger seat than the main unit 2. As shown in FIG. 1, the blower unit 3 is disposed below the inside / outside air switching device 4.

  The inside / outside air switching device 4 is a device that introduces inside air or outside air in a switchable manner. The inside / outside air switching device 4 is arranged on the most upstream side of the air flow of the blower unit 3.

  A detailed configuration of the wiring portion 21d in the present embodiment will be described with reference to FIG. Hereinafter, the wiring layer 211d is referred to as a first wiring layer 211d, and the wiring layer 212d is referred to as a second wiring layer 212d. The conductive wiring connected to the one end 21ea of the first coil 21e is referred to as one end side conductive wiring, and the conductive wiring connected to the other end 21eb of the first coil 21e is referred to as the other end side conductive wiring. Therefore, hereinafter, the plurality of conductive wirings 21b are referred to as a plurality of one end side conductive wirings 21b, and the plurality of conductive wirings 21c are referred to as a plurality of other end side conductive wirings 21c. The conductive wiring 211b is referred to as one end side conductive wiring 211b, the conductive wiring 212b is referred to as one end side conductive wiring 212b, the conductive wiring 211c is referred to as the other end side conductive wiring 211c, and the conductive wiring 212c is referred to as the other end side conductive wiring 212c. Called.

  As shown in FIG. 4, the first wiring layer 211d includes one end-side conductive wiring 211b, the other end-side conductive wiring 211c, and an insulating portion 211x. The second wiring layer 212d includes one end-side conductive wiring 212b, the other end-side conductive wiring 212c, and an insulating portion 212x. As described above, each of the two wiring layers 211d and 212d includes one of the plurality of one-end-side conductive wirings 21b and one of the plurality of the other-end-side conductive wirings 21c. The insulating part 211x and the insulating part 212x are each made of an insulating resin (for example, polypropylene) and are covering materials that cover the one end side conductive wiring 21b and the other end side conductive wiring 21c.

  Each of the plurality of one-end-side conductive wirings 21b is a conductive wiring that functions as a power supply line through which a current supplied from the power supply 25 by wireless power transmission flows. Specifically, as shown in FIG. 5, each of the plurality of one end side conductive wirings 21b is connected to one conductive wiring 213y connected to one end 21ea of the first coil 21e. That is, the plurality of one-end-side conductive wires 21b are connected to the one end 21ea of the first coil 21e via the conductive wire 213y.

  As shown in FIG. 5, each of the plurality of other end-side conductive wires 21c is connected to one conductive wire 213w connected to the other end 21eb of the first coil 21e. That is, the plurality of other end-side conductive wires 21c are connected to the other end 21eb of the first coil 21e via the conductive wires 213w.

  FIG. 4 shows a predetermined cross section of the wiring part 21d when the wiring part 21d is cut in the stacking direction DR1 of the two wiring layers 211d and 212d. Hereinafter, the predetermined cross section is referred to as a laminated cross section, and a predetermined direction that is a linear direction included in the laminated cross section and intersects the lamination direction is referred to as a laminated cross direction. The stacking crossing direction is, for example, a predetermined direction DR2 that is a direction of a straight line included in the stacking section and is orthogonal to the stacking direction, as indicated by a symbol DR2 in FIG. Hereinafter, the predetermined direction DR2 will be referred to as a stacking crossing direction DR2, one side of the predetermined direction DR2 will be referred to as a predetermined one side S1, and the other side of the predetermined direction DR2 will be described as a predetermined other side S2.

  The plurality of one end side conductive wirings 21b and the plurality of other end side conductive wirings 21c generate alternating currents in opposite directions. In addition, “+” in FIG. 4 indicates a state in which a current from the back side of the drawing to the near side is generated, and “−” indicates a current from the front side of the drawing in the drawing to the back side. It shows the state. As shown in FIG. 4, a current is generated in the direction of “+” on the side of the plurality of one end side conductive wirings 21b, and a current in the direction of “−” is generated on the side of the plurality of other end side conductive wirings 21c. The resulting state alternates. FIG. 4 shows a state at a specific timing.

  As shown in FIG. 4, in the first wiring layer 211d, the one end side conductive wiring 211b is arranged on the predetermined one side S1, and the other end side conductive wiring 211c is arranged on the predetermined other side S2. In the second wiring layer 212d, the other end side conductive wiring 212c is arranged on the predetermined one side S1, and the one end side conductive wiring 212b is arranged on the predetermined other side S2. As described above, in the first wiring layer 211d, which is one of the two adjacent wiring layers 211d and 212d, the one end side conductive wiring 211b is arranged on the predetermined one side S1, and the other end side conductive wiring 211c is on the predetermined other side. Arranged on the side S2. In the second wiring layer 212d which is the other of the two wiring layers 211d and 212d, the other end side conductive wiring 212c is arranged on the predetermined one side S1, and the one end side conductive wiring 212b is arranged on the predetermined other side S2. Has been.

  The operation and effect of this configuration will be described with reference to FIGS. FIG. 6 schematically shows a cross section of the four conductive wirings shown in FIG. 4 (that is, one end side conductive wirings 211b and 212b and the other end side conductive wirings 211c and 212c).

  As shown in FIG. 6, a magnetic field M1 in the clockwise direction is generated in the one-end-side conductive wiring 211b according to the right-handed screw law. Similarly, a clockwise magnetic field M4 is generated in the one end side conductive wiring 212b. A magnetic field M2 having a counterclockwise direction is generated in the other end side conductive wiring 211c. Similarly, a magnetic field M3 in a counterclockwise direction is generated in the other end side conductive wiring 212c. FIG. 6 shows a state at a specific timing.

  The magnetic field M1 generated by the current generated in the one end side conductive wiring 211b is substantially the upper side in FIG. 6 on the side close to the other end side conductive wiring 211c in the magnetic field M1 (that is, the right side of the magnetic field M1 in FIG. 6). The direction is from the bottom to the bottom. The right side is the predetermined other side S2.

  The magnetic field M2 generated by the current generated in the other end-side conductive wiring 211c is substantially the upper side in FIG. 6 on the side close to the one-end-side conductive wiring 211b in the magnetic field M2 (that is, the left side of the magnetic field M2 in FIG. 6). The direction is from the bottom to the bottom.

  As described above, between the one end side conductive wiring 211b and the other end side conductive wiring 211c, the magnetic field M1 generated by the current generated in the one end side conductive wiring 211b and the magnetic field M2 generated by the current generated in the other end side conductive wiring 211c. Both are generally oriented from the upper side to the lower side. Therefore, macroscopically, a magnetic field M12 is generated between the one end-side conductive wiring 211b and the other end-side conductive wiring 211c, generally in a direction from the upper side to the lower side.

  The magnetic field M3 generated by the current generated in the other end side conductive wiring 212c is substantially lower in FIG. 6 on the side close to the one end side conductive wiring 212b in the magnetic field M3 (that is, the right side of the magnetic field M3 in FIG. 6). The direction is from the side to the top.

  The magnetic field M4 generated by the current generated in the one end side conductive wiring 212b is substantially lower in FIG. 6 on the side close to the other end side conductive wiring 212c in the magnetic field M4 (that is, the left side of the magnetic field M4 in FIG. 6). The direction is from the side to the top.

  Thus, between the other end side conductive wiring 212c and the one end side conductive wiring 212b, the magnetic field M3 generated by the current generated in the other end side conductive wiring 212c and the magnetic field M4 generated by the current generated in the one end side conductive wiring 212b. Are generally oriented from the bottom to the top. Therefore, macroscopically, a magnetic field M34 is generated between the other-end-side conductive wiring 212c and the one-end-side conductive wiring 212b.

  That is, the magnetic field M12 and the magnetic field M34 are opposite to each other. Here, the electromagnetic noise is generated due to time differentiation of the magnetic field (that is, change of the magnetic field). That is, the time differentiation of the magnetic field is different in phase from the magnetic field. Therefore, in this embodiment, since the magnetic field M12 and the magnetic field M34 are opposite to each other, the time differentiation of the magnetic field M12 and the time differentiation of the magnetic field M34 are suppressed and canceled each other. Thereby, both the time derivative of the magnetic field M12 and the time derivative of the magnetic field M34 are reduced. As a result, generation of electromagnetic noise caused by time differentiation of the magnetic field M12 and time differentiation of the magnetic field M34 is suppressed. In FIG. 6, the magnetic field M <b> 12 and the magnetic field M <b> 34 are schematically shown, and thus are not shown to overlap each other. However, actually, the magnetic field M12 and the magnetic field M34 are generated in a wider range in the vertical direction (that is, the stacking direction DR1) than the arrows M12 and M34 in FIG. 6 and overlap each other in the vertical direction. For this reason, the time derivative of the magnetic field M12 and the time derivative of the magnetic field M34 are mutually canceled because they suppress each other. Note that the suppression of the time differentiation of these magnetic fields is basically always established, not only at the specific timing in FIG.

  The magnetic field M1 generated by the current generated in the one end side conductive wiring 211b is substantially the left side in FIG. 6 on the side close to the other end side conductive wiring 212c in the magnetic field M1 (that is, the upper side of the magnetic field M1 in FIG. 6). The direction is from to the right.

  The magnetic field M3 generated by the current generated in the other end side conductive wiring 212c is approximately the same as that in FIG. 6 on the side close to the one end side conductive wiring 211b in the magnetic field M3 (that is, the lower side of the magnetic field M3 in FIG. 6). The direction is from left to right.

  Thus, between the one end side conductive wiring 211b and the other end side conductive wiring 212c, the magnetic field M1 generated by the current generated in the one end side conductive wiring 211b and the magnetic field M3 generated by the current generated in the other end side conductive wiring 212c. Are generally oriented from left to right. Therefore, macroscopically, a magnetic field M13 is generated between the one end-side conductive wiring 211b and the other end-side conductive wiring 212c in a direction substantially from the left side to the right side.

  The magnetic field M2 generated by the current generated in the other end side conductive wiring 211c is substantially the right side in FIG. 6 on the side close to the one end side conductive wiring 212b in the magnetic field M2 (that is, the upper side of the magnetic field M2 in FIG. 6). From left to right.

  The magnetic field M4 generated by the current generated in the one end side conductive wiring 212b is approximately the same as that in FIG. 6 on the side close to the other end side conductive wiring 211c in the magnetic field M4 (that is, the lower side of the magnetic field M4 in FIG. 6). The direction is from the right to the left.

  Thus, between the other end side conductive wiring 211c and the one end side conductive wiring 212b, the magnetic field M2 generated by the current generated in the other end side conductive wiring 211c and the magnetic field M4 generated by the current generated in the one end side conductive wiring 212b. Are generally oriented from the right side to the left side. Accordingly, macroscopically, a magnetic field M24 is generated between the other-end-side conductive wiring 211c and the one-end-side conductive wiring 212b.

  Here, since the magnetic field M13 and the magnetic field M24 are opposite to each other, the time derivative of the magnetic field M13 and the time derivative of the magnetic field M24 are mutually suppressed and canceled out. Thereby, both the time derivative of the magnetic field M13 and the time derivative of the magnetic field M24 are reduced. As a result, generation of electromagnetic noise caused by time differentiation of the magnetic field M13 and time differentiation of the magnetic field M24 is suppressed. In FIG. 6, the magnetic field M <b> 13 and the magnetic field M <b> 24 are schematically illustrated and thus are not illustrated to overlap each other. However, actually, the magnetic field M13 and the magnetic field M24 are generated in a wider range in the left-right direction (that is, the stacking crossing direction DR2) than the arrows M13 and M24 in FIG. For this reason, the time derivative of the magnetic field M13 and the time derivative of the magnetic field M24 are mutually suppressed and cancel each other.

  As described above, since the magnetic field M12 and the magnetic field M34 are opposite to each other, the time derivative of the magnetic field M12 and the time derivative of the magnetic field M34 are mutually suppressed and canceled out. Thereby, both the time derivative of the magnetic field M12 and the time derivative of the magnetic field M34 are reduced. As a result, generation of electromagnetic noise caused by time differentiation of the magnetic field M12 and time differentiation of the magnetic field M34 is suppressed. Since the magnetic field M13 and the magnetic field M24 are opposite to each other, the time derivative of the magnetic field M13 and the time derivative of the magnetic field M24 are mutually suppressed and canceled out. Thereby, both the time derivative of the magnetic field M13 and the time derivative of the magnetic field M24 are reduced. As a result, generation of electromagnetic noise caused by time differentiation of the magnetic field M13 and time differentiation of the magnetic field M24 is suppressed.

  As described above, in the first wiring layer 211d, which is one of the two adjacent wiring layers 211d and 212d, the one end side conductive wiring 211b is arranged on the predetermined one side S1, and the other end side conductive wiring 211c is on the predetermined other side. Arranged on the side S2. In the second wiring layer 212d which is the other of the two wiring layers 211d and 212d, the other end side conductive wiring 212c is arranged on the predetermined one side S1, and the one end side conductive wiring 212b is arranged on the predetermined other side S2. Has been. Thereby, the alternating current flowing through the plurality of one-end-side conductive wires 21b (that is, one-end-side conductive wires 211b and 212b) and the plurality of the other-end-side conductive wires 21c (that is, one-end-side conductive wires 211c and 212c) included in the wiring portion 21d. Generation of electromagnetic noise due to current is suppressed.

  On the other hand, as shown in FIG. 7, in the first wiring layer 211d, one end side conductive wiring 211b is arranged on the predetermined one side S1 and the other side S2, and in the second wiring layer 212d, on the predetermined one side S1 and the other side S2. When the other end side conductive wiring 212c is arranged, the generation of electromagnetic noise is not sufficiently suppressed. That is, in this case, similarly to the above description, between the one end side conductive wiring 211b on the predetermined one side S1 of the first wiring layer 211d and the other end side conductive wiring 212b on the predetermined one side S1 of the second wiring layer 212d, A magnetic field CM13 that is directed from the left side to the right side is generated. In addition, between the one end side conductive wiring 211b on the predetermined other side S2 of the first wiring layer 211d and the other end side conductive wiring 212b on the predetermined other side S2 of the second wiring layer 212d, the direction from the left side to the right side is approximately. A magnetic field CM24 is generated. Since the magnetic field CM13 and the magnetic field CM24 are in the same direction, the time differentiation of the magnetic field CM13 and the time differentiation of the magnetic field CM24 reinforce each other. Thereby, both the time derivative of the magnetic field CM12 and the time derivative of the magnetic field CM34 increase. As a result, the generation of electromagnetic noise caused by the time differentiation of the magnetic field CM12 and the time differentiation of the magnetic field CM34 increases.

  As shown in FIG. 4, the one end side conductive wiring 211b is arranged such that the distance D1 between the one end side conductive wiring 211c is shorter than the distance D5 between the one end side conductive wiring 211b. . The one end side conductive wiring 211b is arranged such that the distance D2 between the one end side conductive wiring 212b and the one end side conductive wiring 212b is shorter than the distance D3 between the one end side conductive wiring 212b. That is, the distance between the one end side conductive wiring 211b and the distance between the conductive lines 21b and 21c, which is different from the other end side conductive wiring 211c and the other end side conductive wiring 212c, in both the distance D1 and the distance D2. It arrange | positions so that it may become shorter. Further, the other end side conductive wiring 211c is arranged such that the distance D3 between the other end side conductive wiring 212b is shorter than the distance D6 with respect to the other end side conductive wiring 212c. That is, the other end-side conductive wiring 211c has a distance D3 that is different from the one end-side conductive wiring 211b and the one end-side conductive wiring 212b among the plurality of conductive wirings 21b and 21c included in the two wiring layers 211d and 212d. They are arranged so as to be shorter than the distance to the wiring.

  Further, as shown in FIG. 4, the other end side conductive wiring 212c is arranged such that the distance D4 between the one end side conductive wiring 212b is shorter than the distance D6 between the other end side conductive wiring 211c. Has been. In other words, the other end side conductive wiring 212c has a distance D4 which is different from the one end side conductive wiring 211b and the one end side conductive wiring 212b among the plurality of conductive lines 21b and 21c included in the two wiring layers 211d and 212d. They are arranged so as to be shorter than the distance to the wiring.

  The distances D1 to D6 are the shortest distances between the corresponding conductive wires.

  Here, if the time differentiation of the magnetic field is not suppressed as described above, the time differentiation of the magnetic field M12 corresponding to the distance D1, the time differentiation of the magnetic field M13 corresponding to the distance D2, and the time of the magnetic field M24 corresponding to the distance D3. The time differentiation of the magnetic field M34 corresponding to the differentiation and the distance D4 is a time differentiation of a large magnetic field. As a result, large electromagnetic noise is generated. However, in the present embodiment, since the time differentiation of the magnetic field M12, the time differentiation of the magnetic field M13, the time differentiation of M24, and the time differentiation of M34 can be suppressed as described above, it is particularly significant.

  One end side conductive wiring 211b arranged on the predetermined one side S1 in the first wiring layer 211d and one end side conductive wiring 212b arranged on the predetermined other side S2 in the second wiring layer 212d are mutually based on the predetermined point P. It is point symmetric. Here, it is ideal that the whole of the one end side conductive wiring 211b and the whole of the one end side conductive wiring 212b are point-symmetric with each other, but at least a part of the one end side conductive wiring 211b is at least part of the one end side conductive wiring 212b. It suffices if the parts are symmetrical with respect to each other. The other end side conductive wiring 211c disposed on the predetermined other side S2 in the first wiring layer 211d and the other end side conductive wiring 212c disposed on the predetermined one side S1 in the second wiring layer 212d are the predetermined points. They are point-symmetric with respect to P. Here, it is ideal that the other end side conductive wiring 211c and the other end side conductive wiring 212c are point-symmetric with each other, but at least a part of the other end side conductive wiring 211c is the other end side conductive. It is sufficient that at least part of the wiring 212c is point-symmetric with respect to each other. The predetermined point P is a predetermined virtual point located inside the wiring portion 21d.

  Therefore, of the magnetic fields generated between the conductive wirings 211b, 212b, 211c, and 212c, two corresponding ones (that is, M12 and M34, or M13 and M24) are both substantially in the same direction and opposite to each other. It becomes. For this reason, in the vehicle air conditioner 1 which concerns on this embodiment, generation | occurrence | production of electromagnetic noise is suppressed especially efficiently.

  A seam is formed between the wiring layers 211d and 212d included in the wiring part 21d. This seam can be confirmed by cutting the wiring portion 21d or performing a nondestructive inspection by X-rays. The detailed configuration, operation, and effect of the wiring portion 21d in the present embodiment have been described above.

  Next, the manufacturing method of the wiring part 21d in this embodiment is demonstrated using FIGS. The wiring portion 21d in the present embodiment is completed as a whole through the same manufacturing process as that conventionally known as integral molding of resin and metal by injection molding. Therefore, in the following, only the characteristic steps in this manufacturing method will be described.

  First, injection molds 50 and 60 shown in FIG. 8 are prepared. The molds 50 and 60 are constituted by a lower mold 50 and an upper mold 60. As shown in FIG. 8, the lower mold 50 is a substantially flat mold having a surface 50 a brought into contact with the upper mold 60 and a recess 50 b formed on the surface 50 a. The upper mold 60 is a substantially flat mold having a surface 60 a that is brought into contact with the lower mold 50. A space surrounded by the recess 50 b of the lower mold 50 and the upper mold 60 is a cavity 300 corresponding to the first wall portion 21 a of the case member 21. A portion of the cavity 300 that contacts the surface 60a of the upper mold 60 corresponds to the surface 21z of the first wall portion 21a. In FIG. 8, for convenience, the shapes of the lower mold 50, the upper mold 60, and the cavity 300 are simplified. Further, the shapes of the lower mold 50 and the cavity 300 are similarly simplified in FIGS. 9 to 12.

  Then, a case member 21 as shown in FIG. 13 is injected by injecting a melted insulating resin (for example, polypropylene) serving as a material of the first wall portion 21a of the case member 21 into the cavity 300 and cooling and solidifying it. The first wall portion 21a is formed.

  Next, the upper mold 60 is replaced with an upper mold 61 as shown in FIG. As shown in FIG. 9, the upper mold 61 has basically the same shape as the upper mold 60, but two concave portions 61 b and 61 c are formed on the surface 61 a that is brought into contact with the lower mold 50. This is different from the upper mold 60 in that respect. The internal space of one of the two recesses 61b and 61c is a cavity 301 corresponding to the one end side conductive wiring 211b of the first wiring layer 211d. In addition, a part of the internal space of the other 61c of the two recesses 61b and 61c is a cavity 302 corresponding to the other end side conductive wiring 211c of the first wiring layer 211d.

  Then, a melted conductive material (for example, aluminum) serving as the material of the one end side conductive wiring 211b is poured into the cavity 301, and then cooled and solidified to form the one end side conductive wiring 211b as shown in FIG. To do. At the same time, a melted conductive material (for example, aluminum) serving as the material of the other end side conductive wiring 211c is poured into the cavity 302 and cooled and solidified, whereby the other end side conductive wiring 211c as shown in FIG. Is molded.

  Next, the upper mold 61 is replaced with an upper mold 62 as shown in FIG. As shown in FIG. 10, the upper mold 62 has basically the same shape as the upper mold 60, but the upper mold 62 is such that a recess 62 b is formed on the surface 62 a that is brought into contact with the lower mold 50. Different from 60. A part of the internal space of the recess 62b is a cavity 303 corresponding to the insulating part 211x of the first wiring layer 211d.

  And what melt | dissolved insulating resin (for example, polypropylene) used as the material of the insulating part 211x is inject | poured into the cavity 303, and solidifies by cooling, The insulating part 211x as shown in FIG. 14 is shape | molded.

  Next, the upper mold 62 is replaced with an upper mold 63 as shown in FIG. As shown in FIG. 11, the upper mold 63 has basically the same shape as the upper mold 62, but two recesses 63 c and 63 d are formed on the bottom surface of the recess 63 b corresponding to the recess 62 b in the upper mold 62. It is different from the upper mold 62 in that. An internal space of one of the two recesses 63c and 63d is a cavity 304 corresponding to the other end side conductive wiring 212c of the second wiring layer 212d. In addition, the internal space of one of the two recesses 63c and 63d is a cavity 305 corresponding to the one end side conductive wiring 212b of the second wiring layer 212d.

  Then, a melted conductive material (for example, aluminum) serving as the material of the other end side conductive wiring 212c is poured into the cavity 304 and cooled and solidified, whereby the other end side conductive wiring 212c as shown in FIG. Is molded. At the same time, a melted conductive material (for example, aluminum) serving as the material of the one end side conductive wiring 212b is poured into the cavity 305, and cooled and solidified to form the one end side conductive wiring 212b as shown in FIG. To do.

  Next, the upper mold 63 is replaced with an upper mold 64 as shown in FIG. As shown in FIG. 12, the upper mold 64 is basically the same shape as the upper mold 60, but the upper mold 64 is such that a recess 64 b is formed on the surface 64 a that is brought into contact with the lower mold 50. Different from 60. A part of the internal space of the recess 64b is a cavity 306 corresponding to the insulating part 212x of the second wiring layer 211d.

  And what melt | dissolved insulating resin (for example, polypropylene) used as the material of the insulation part 212x is inject | poured into the cavity 306, and solidifies by cooling, The insulation part 212x as shown in FIG. 16 is shape | molded. Through the above steps, the wiring portion 21d in this embodiment is completed.

  As described above, in the vehicle air conditioner 1, in the first wiring layer 211d that is one of the two adjacent wiring layers 211d and 212d, the one end side conductive wiring 211b is disposed on the predetermined one side S1. In addition, the other end side conductive wiring 211c is arranged on the predetermined other side S2. In the second wiring layer 212d, which is the other of the two wiring layers 211d and 212d, the other end side conductive wiring 212c is arranged on the predetermined one side S1, and the one end side conductive wiring 212b is on the predetermined other side S2. Has been placed.

  For this reason, in this vehicle air conditioner 1, generation | occurrence | production of the electromagnetic noise resulting from the alternating current which flows into the some one end side conductive wiring 21b and the some other end side conductive wiring 21c contained in the wiring part 21d is suppressed.

  Further, in the vehicle air conditioner 1, the one end side conductive wiring 211b has the distance D1 and the distance D2 both of the other end side conductive wiring 211c and the other end side conductive wiring 212c among the plurality of conductive wirings 21b and 21c. It is arranged so as to be shorter than the distance to any conductive wiring different from the above. The other end side conductive wiring 211c has a distance D3 which is different from the one end side conductive wiring 211b and the one end side conductive wiring 212b among the plurality of conductive wirings 21b and 21c included in the two wiring layers 211d and 212d. They are arranged so as to be shorter than the distance to the wiring. Further, the other end side conductive wiring 212c has a distance D4 which of the plurality of conductive wirings 21b and 21c included in the two wiring layers 211d and 212d is different from the one end side conductive wiring 211b and the one end side conductive wiring 212b. They are arranged so as to be shorter than the distance to the wiring.

  Therefore, since the time differentiation of the magnetic field M12, the time differentiation of the magnetic field M13, the time differentiation of M24, and the time differentiation of M34, which cause large electromagnetic noise, can be suppressed, this is particularly significant.

  In the vehicle air conditioner 1, at least a part of the one end side conductive wiring 211 b and at least a part b of the one end side conductive wiring 212 are point-symmetric with respect to the predetermined point P. Further, at least part of the other end side conductive wiring 211c and at least part of the other end side conductive wiring 212c are point-symmetric with respect to the predetermined point P. The predetermined point P is a predetermined virtual point located inside the wiring portion 21d.

  Therefore, of the magnetic fields generated between the conductive wirings 211b, 212b, 211c, and 212c, two corresponding ones (that is, M12 and M34, or M13 and M24) are both substantially in the same direction and opposite to each other. It becomes. For this reason, in the vehicle air conditioner 1 which concerns on this embodiment, generation | occurrence | production of electromagnetic noise is suppressed especially efficiently.

(Second Embodiment)
A second embodiment of the present disclosure will be described with reference to FIGS. In the present embodiment, the configuration of the wiring portion 21d in the first embodiment is changed. Since the other parts are basically the same as those in the first embodiment, only the parts different from those in the first embodiment will be basically described.

  First, the configuration, operation, and effect of the vehicle air conditioner 1 according to the present embodiment will be described with reference to FIGS. FIG. 17 is a diagram corresponding to FIG. 4 in the first embodiment.

  As shown in FIG. 17, the wiring part 21d in the present embodiment has four wiring layers 211d, 212d, 213d, and 214d. The wiring part 21d is configured by laminating the four wiring layers 211d, 212d, 213d, and 214d one by one in order from the first wall part 21a side. Specifically, the wiring layer 211d, the wiring layer 212d, the wiring layer 213d, and the wiring layer 214d are laminated in this order from the first wall portion 21a side. As in the case of the first embodiment, the wiring portion 21d includes a plurality of one end-side conductive wires 21b connected to one end 21ea of the first coil 21e and a plurality of other ends connected to the other end 21eb of the first coil 21e. Side conductive wiring 21c is included. Specifically, the plurality of one end side conductive wirings 21b are one end side conductive wiring 211b, one end side conductive wiring 212b, one end side conductive wiring 213b, and one end side conductive wiring 214b. The plurality of other end side conductive wires 21c are the other end side conductive wire 211c, the other end side conductive wire 212c, the other end side conductive wire 213c, and the other end side conductive wire 214c. Each of the plurality of conductive wires 21b and the plurality of conductive wires 21c is made of a conductive material such as aluminum or copper.

  A detailed configuration of the wiring portion 21d in the present embodiment will be described with reference to FIGS.

  As shown in FIG. 17, the first wiring layer 211d includes one end-side conductive wiring 211b, the other end-side conductive wiring 211c, and an insulating portion 211x. The second wiring layer 212d includes one end-side conductive wiring 212b, the other end-side conductive wiring 212c, and an insulating portion 212x. The third wiring layer 213d includes one end-side conductive wiring 213b, the other end-side conductive wiring 213c, and an insulating portion 213x. The fourth wiring layer 214d includes one end side conductive wiring 214b, the other end side conductive wiring 214c, and an insulating portion 214x. Thus, each of the four wiring layers 211d, 212d, 213d, and 214d includes one of the plurality of one end side conductive wirings 21b and one of the plurality of other end side conductive wirings 21c. The insulating portion 211x, the insulating portion 212x, the insulating portion 213x, and the insulating portion 214x are each made of an insulating resin (for example, polypropylene) and are covering materials that cover the one end side conductive wiring 21b and the other end side conductive wiring 21c. is there.

  Each of the plurality of one-end-side conductive wirings 21b is a conductive wiring that functions as a power supply line through which a current supplied from the power supply 25 by wireless power transmission flows. Specifically, as shown in FIGS. 18 to 19, each of the plurality of one end side conductive wirings 21b is connected to one conductive wiring 213y connected to one end 21ea of the first coil 21e. That is, the plurality of one-end-side conductive wires 21b are connected to the one end 21ea of the first coil 21e via the conductive wire 213y. Further, the conductive wirings 21 c and 21 d arranged on the case member 21 are connected to the electrical component 24.

  As shown in FIGS. 18 to 19, each of the plurality of other-end-side conductive wires 21c is connected to one conductive wire 213w connected to the other end 21eb of the first coil 21e. That is, the plurality of other end-side conductive wires 21c are connected to the other end 21eb of the first coil 21e via the conductive wires 213w.

  FIG. 17 shows a predetermined cross section of the wiring portion 21d when the wiring portion 21d is cut in the stacking direction DR1 of the four wiring layers 211d, 212d, 213d, and 214d. Hereinafter, the predetermined cross section is referred to as a laminated cross section, and a predetermined direction that is a linear direction included in the laminated cross section and intersects the lamination direction is referred to as a laminated cross direction. The stacking crossing direction is, for example, a predetermined direction DR2 that is a direction of a straight line included in the stacking section and is orthogonal to the stacking direction, as indicated by reference sign DR2 in FIG. Hereinafter, the predetermined direction DR2 will be referred to as a stacking crossing direction DR2, one side of the predetermined direction DR2 will be referred to as a predetermined one side S1, and the other side of the predetermined direction DR2 will be described as a predetermined other side S2.

  The plurality of one end side conductive wirings 21b and the plurality of other end side conductive wirings 21c generate alternating currents in opposite directions. 17, 18, and 20, “+” indicates a state in which an electric current is generated from the back side of the drawing to the near side, and “−” indicates the back side of the drawing in the drawing. The state where the electric current which goes to the side has arisen is shown. As shown in FIG. 17, a current is generated in the direction of “+” on the side of the plurality of one-end-side conductive wirings 21b, and a current in the direction of “−” is generated on the side of the plurality of other-end-side conductive wirings 21c. The resulting state alternates. FIG. 17 shows a state at a specific timing.

  As shown in FIG. 17, in the first wiring layer 211d, the one end side conductive wiring 211b is arranged on the predetermined one side S1, and the other end side conductive wiring 211c is arranged on the predetermined other side S2. In the second wiring layer 212d, the other end side conductive wiring 212c is arranged on the predetermined one side S1, and the one end side conductive wiring 212b is arranged on the predetermined other side S2. In the third wiring layer 213d, the one end side conductive wiring 213b is arranged on the predetermined one side S1, and the other end side conductive wiring 213c is arranged on the predetermined other side S2. In the fourth wiring layer 214d, the other end side conductive wiring 214c is arranged on the predetermined one side S1, and the one end side conductive wiring 214b is arranged on the predetermined other side S2. That is, in any one of the two adjacent wiring layers 211 to 214d (that is, the first and third wiring layers 211d and 213d), the one end side conductive wires 211b and 213b are set to the predetermined one side S1. The other end side conductive wires 211c and 213c are arranged on the predetermined other side S2 while being arranged. Also, in any of the two wiring layers (that is, the second and fourth wiring layers 212d and 214d), the other end side conductive wirings 212c and 214c are arranged on the predetermined one side S1 and one end thereof. The side conductive wirings 212b and 214c are arranged on the predetermined other side S2.

  The operation and effect of this configuration will be described with reference to FIG. FIG. 20 schematically shows a cross section of the eight conductive wirings shown in FIG. 17 (that is, one end side conductive wirings 211b, 212b, 213b, 214b, and the other end side conductive wirings 211c, 212c, 212c, 213c, 214c). It is.

  As shown in FIG. 20, the magnetic fields M1, M4, M5, and M8 in the clockwise direction are generated in the one end side conductive wirings 211b, 212b, 213b, and 214b according to the right-handed screw law. Magnetic fields M2, M3, M6, and M7 in the counterclockwise direction are generated in the other end side conductive wirings 211c, 212c, 213c, and 214c. FIG. 20 shows a state at a specific timing.

  Accordingly, for the same reason as described in the first embodiment, as shown in FIG. 20, in a macroscopic manner, between the one end side conductive wire 211b and the other end side conductive wire 211c, the lower side is generally from the upper side. A magnetic field M12 directed toward the side is generated. In addition, a magnetic field M78 is generated between the other end side conductive wiring 214c and the one end side conductive wiring 214b.

  Here, since the magnetic field M12 and the magnetic field M78 are opposite to each other, the time derivative of the magnetic field M12 and the time derivative of the magnetic field M78 are mutually suppressed and canceled out. Thereby, both the time derivative of the magnetic field M12 and the time derivative of the magnetic field M78 are reduced. As a result, generation of electromagnetic noise caused by time differentiation of the magnetic field M12 and time differentiation of the magnetic field M78 is suppressed. In addition, suppression of the time differentiation of these magnetic fields is fundamentally always established not only at the specific timing in FIG.

  In addition, a magnetic field M13 is generated between the one end side conductive wire 211b and the other end side conductive wire 212c, generally in the direction from the lower left side to the upper right side. In addition, a magnetic field M68 is generated between the other end side conductive wiring 213c and the one end side conductive wiring 214b in a direction generally from the upper right side to the lower left side.

  Here, since the magnetic field M13 and the magnetic field M68 are opposite to each other, the time differentiation of the magnetic field M13 and the time differentiation of the magnetic field M68 are mutually suppressed and canceled out. Thereby, both the time derivative of the magnetic field M13 and the time derivative of the magnetic field M68 are reduced. As a result, the generation of electromagnetic noise caused by the time differentiation of the magnetic field M13 and the time differentiation of the magnetic field M68 is suppressed. In addition, suppression of the time differentiation of these magnetic fields is fundamentally always established not only at the specific timing in FIG.

  In addition, a magnetic field M35 is generated between the other-end-side conductive wiring 212c and the one-end-side conductive wiring 213b. The right side is the predetermined other side S2. The left side is the predetermined one side S1. Further, a magnetic field M46 is generated between the one end side conductive wiring 212b and the other end side conductive wiring 213c, generally in the direction from the left side to the right side.

  Here, since the magnetic field M35 and the magnetic field M46 are opposite to each other, the time derivative of the magnetic field M35 and the time derivative of the magnetic field M46 are mutually suppressed and canceled out. Thereby, both the time derivative of the magnetic field M35 and the time derivative of the magnetic field M46 are reduced. As a result, generation of electromagnetic noise caused by time differentiation of the magnetic field M35 and time differentiation of the magnetic field M46 is suppressed. In addition, suppression of the time differentiation of these magnetic fields is fundamentally always established not only at the specific timing in FIG.

  In addition, a magnetic field M57 is generated between the one end-side conductive wiring 213b and the other end-side conductive wiring 214c in a direction substantially from the upper left side to the lower right side. In addition, a magnetic field M24 is generated between the other end side conductive wiring 211c and the one end side conductive wiring 212b, generally in a direction from the lower right side to the upper left side.

  Here, since the magnetic field M57 and the magnetic field M24 are opposite to each other, the time differentiation of the magnetic field M57 and the time differentiation of the magnetic field M24 are mutually suppressed and canceled out. Thereby, both the time derivative of the magnetic field M57 and the time derivative of the magnetic field M24 are reduced. As a result, generation of electromagnetic noise caused by time differentiation of the magnetic field M57 and time differentiation of the magnetic field M24 is suppressed. In addition, suppression of the time differentiation of these magnetic fields is fundamentally always established not only at the specific timing in FIG.

  As described above, in the present embodiment, one of the four wiring layers 211d to 214d (ie, the first and third wiring layers 211d and 213d) is adjacent to the one end side conductive wiring 211b, 213b is arranged on the predetermined one side S1. The other end side conductive wires 211c and 213c are arranged on the predetermined other side S2. Also, in the other of the two wiring layers (that is, the second and fourth wiring layers 212d and 214d), the other end side conductive wirings 212c and 214c are arranged on the predetermined one side S1. Also, one end side conductive wirings 212b and 214c are arranged on the predetermined other side S2.

  Thereby, it flows through the plurality of one end side conductive wires 21b (that is, one end side conductive wires 211b to 214b) and the plurality of other end side conductive wires 21c (that is, other end side conductive wires 211c to 214c) included in the wiring portion 21d. Generation of electromagnetic noise due to alternating current is suppressed.

  As shown in FIG. 17, the distance D7 between the one end side conductive wiring 211b and the other end side conductive wiring 211c is such that the other end side conductive wiring 211c and the other end side conductive wiring 211c out of the plurality of conductive wirings 21b and 21c. It is arranged so as to be shorter than the distance to any conductive wiring different from 212c. Further, the distance D8 between the one end side conductive wiring 211b and the other end side conductive wiring 212c is the other end side conductive wiring 211c among the plurality of conductive wirings 21b and 21c included in the four wiring layers 211d to 214d. , 212c, and so as to be shorter than the distance to any conductive wiring.

  As shown in FIG. 17, the other end side conductive wiring 211c has a distance D9 between the one end side conductive wiring 212b and one end of the plurality of conductive wirings 21b and 21c included in the four wiring layers 211d to 214d. The side conductive wires 211b and 212b are arranged so as to be shorter than the distance between any conductive wires different from the side conductive wires 211b and 212b.

  As shown in FIG. 17, the other end side conductive wiring 212c has a distance D10 between the one end side conductive wiring 213b and one end of the plurality of conductive wirings 21b and 21c included in the four wiring layers 211d to 214d. The side conductive wirings 213b and 211b are arranged so as to be shorter than the distance from any conductive wiring.

  As shown in FIG. 17, the distance D11 between the one end side conductive wiring 212b and the other end side conductive wiring 213c is the other of the plurality of conductive wirings 21b and 21c included in the four wiring layers 211d to 214d. The end-side conductive wirings 213c and 211c are arranged so as to be shorter than the distance between any of the conductive wirings.

  As shown in FIG. 17, the distance D12 between the one end side conductive wiring 213b and the other end side conductive wiring 214c is the other of the plurality of conductive wirings 21b and 21c included in the four wiring layers 211d to 214d. The end-side conductive wirings 214c and 212c are arranged so as to be shorter than the distance from any conductive wiring.

  As shown in FIG. 17, the other end side conductive wire 213c has a distance D13 between one end side conductive wire 214b and one end of the plurality of conductive wires 21b and 21c included in the four wiring layers 211d to 214d. The side conductive wirings 214b and 212b are arranged so as to be shorter than the distance from any conductive wiring.

  Further, as shown in FIG. 17, the other end side conductive wiring 214c has a distance D14 between the other end side conductive wiring 214b of the plurality of conductive wirings 21b and 21c included in the four wiring layers 211d to 214d. The one-end-side conductive wirings 214b and 213b are arranged so as to be shorter than the distance between any one of the conductive wirings. Further, the distance D14 between the one end side conductive wiring 214b and the other end side conductive wiring 214c has one end side conductive wiring 214b, among the plurality of conductive wirings 21b and 21c included in the four wiring layers 211d to 214d. It is arranged so as to be shorter than the distance to any conductive wiring different from 213b.

  In addition, said distance in this embodiment is the shortest distance between each corresponding electrically conductive wiring, respectively.

  Here, if the time differentiation of the magnetic field is not suppressed as described above, the time differentiation of the magnetic field M12, the time differentiation of M13, the time differentiation of M24, the time differentiation of M35, the time differentiation of M46, the time differentiation of M57, Both the time differentiation of M68 and the time differentiation of M78 are time differentiations of a large magnetic field. As a result, large electromagnetic noise is generated. However, in this embodiment, as described above, the time differentiation of the magnetic field M12, the time differentiation of M24, the time differentiation of M35, the time differentiation of M46, the time differentiation of M57, the time differentiation of M68, and the time differentiation of M78 are suppressed. This is particularly meaningful.

  As shown in FIG. 17, in this embodiment, each of the distance D15 and the distance D16 is longer than each of the distance D7 and the distance D14. The distance D15 is a distance between the other end side conductive wiring 212c and the one end side conductive wiring 212b in the second wiring layer 212d. The distance D16 is a distance between the one end side conductive wiring 213b and the other end side conductive wiring 213c in the third wiring layer 213d. The distance D7 is a distance between the one end side conductive wiring 211b and the other end side conductive wiring 211c in the first wiring layer 211d. The distance D14 is a distance between the other end side conductive wiring 214c and the one end side conductive wiring 214b in the fourth wiring layer 214d.

  Further, as shown in FIG. 17, one end side conductive wiring 211b disposed on the predetermined one side S1 in the first wiring layer 211d, and one end side conductive wiring 214b disposed on the predetermined other side S2 in the fourth wiring layer 214d. Are point-symmetric with respect to the predetermined point P. Here, it is ideal that the entire one end side conductive wiring 211b and the entire one end side conductive wiring 214b are point-symmetric with each other, but at least a part of the one end side conductive wiring 211b is at least part of the one end side conductive wiring 214b. It suffices if the parts are symmetrical with respect to each other. Further, the other end side conductive wiring 211c disposed on the predetermined other side S2 in the first wiring layer 211d and the other end side conductive wiring 214c disposed on the predetermined one side S1 in the fourth wiring layer 214d are the predetermined points. They are point-symmetric with respect to P. Here, it is ideal that the whole of the other end side conductive wiring 211c and the whole of the other end side conductive wiring 214c are point-symmetric with each other, but at least a part of the other end side conductive wiring 211c is the other end side conductive. It is sufficient that at least part of the wiring 214c is point-symmetric with each other. The other end side conductive wiring 212c disposed on the predetermined one side S1 in the second wiring layer 212d and the other end side conductive wiring 213c disposed on the predetermined other side S2 in the third wiring layer 213d They are point-symmetric with each other as a reference. Here, it is ideal that the entire other end side conductive wiring 212c and the other end side conductive wiring 213c are point-symmetric with each other, but at least a part of the other end side conductive wiring 212c is the other end side conductive. It is sufficient that at least part of the wiring 213c is point-symmetric with each other. In addition, the one end side conductive wiring 212b arranged on the predetermined other side S2 in the second wiring layer 212d and the one end side conductive wiring 213b arranged on the predetermined one side S1 in the third wiring layer 213d They are point-symmetric with each other as a reference. Here, it is ideal that the entire one end side conductive wiring 212b and the entire one end side conductive wiring 213b are point-symmetric with each other, but at least a part of the one end side conductive wiring 212b is at least part of the one end side conductive wiring 213b. It suffices if the parts are symmetrical with respect to each other. The predetermined point P is a predetermined virtual point located inside the wiring portion 21d.

  Therefore, in the present embodiment, two corresponding magnetic fields (that is, M12 and M78, etc.) among the magnetic fields generated between the conductive wirings 211b to 214b and 211c to 214c are substantially in the same direction. And they are opposite to each other. For this reason, in the vehicle air conditioner 1 which concerns on this embodiment, generation | occurrence | production of electromagnetic noise is suppressed especially efficiently. The detailed configuration, operation, and effect of the wiring portion 21d in the present embodiment have been described above.

  Next, the manufacturing method of the wiring part 21d in this embodiment is demonstrated using FIGS. The wiring portion 21d in the present embodiment is completed as a whole through the same manufacturing process as that conventionally known as integral molding of resin and metal by injection molding. Therefore, in the following, only the characteristic steps in this manufacturing method will be described.

  First, injection molds 70 and 80 shown in FIG. 21 are prepared. The molds 70 and 80 are constituted by a lower mold 70 and an upper mold 80. As shown in FIG. 21, the lower mold 70 is a substantially flat mold having a surface 70a brought into contact with the upper mold 80 and a recess 70b formed in the surface 70a. The upper mold 80 is a substantially flat mold having a surface 80 a that is brought into contact with the lower mold 70. A space surrounded by the recess 70 b of the lower mold 70 and the upper mold 80 is a cavity 400 corresponding to the first wall portion 21 a of the case member 21. A portion of the cavity 400 that contacts the surface 80a of the upper mold 80 corresponds to the surface 21z of the first wall portion 21a. In FIG. 21, for convenience, the shapes of the lower mold 70, the upper mold 80, and the cavity 400 are simplified. Further, the shapes of the lower mold 70 and the cavity 400 are similarly simplified in FIGS. 22 to 29.

  A case member 21 as shown in FIG. 30 is obtained by injecting a melted insulating resin (for example, polypropylene), which is a material of the first wall portion 21a of the case member 21, into the cavity 400 and cooling and solidifying it. The first wall portion 21a is formed.

  Next, the upper mold 80 is replaced with an upper mold 81 as shown in FIG. As shown in FIG. 22, the upper die 81 is basically the same shape as the upper die 80, but two concave portions 81 b and 81 c are formed on the surface 81 a that is brought into contact with the lower die 70. This is different from the upper mold 80 in that respect. The internal space of one of the two concave portions 81b and 81c is a cavity 401 corresponding to the one end side conductive wiring 211b of the first wiring layer 211d. In addition, a part of the internal space of the other 81c of the two recesses 81b and 81c is a cavity 402 corresponding to the other end side conductive wiring 211c of the first wiring layer 211d.

  Then, one end side conductive wiring 211b as shown in FIG. 30 is formed by injecting a molten conductive material (for example, aluminum) as a material of the one end side conductive wiring 211b into the cavity 401 and solidifying by cooling. To do. At the same time, a melted conductive material (for example, aluminum) serving as the material of the other end side conductive wiring 211c is poured into the cavity 402 and cooled and solidified, whereby the other end side conductive wiring 211c as shown in FIG. Is molded.

  Next, the upper mold 81 is replaced with an upper mold 82 as shown in FIG. As shown in FIG. 23, the upper mold 82 is basically the same shape as the upper mold 80, but the upper mold 82 is such that a recess 82b is formed on the surface 82a that is brought into contact with the lower mold 70. Different from 80. A part of the internal space of the recess 82b is a cavity 403 corresponding to the insulating part 211x of the first wiring layer 211d.

  And what melt | dissolved insulating resin (for example, polypropylene) used as the material of the insulating part 211x is inject | poured into the cavity 403, and solidifies by cooling, The insulating part 211x as shown in FIG. 31 is shape | molded.

  Next, the upper mold 82 is replaced with an upper mold 83 as shown in FIG. As shown in FIG. 24, the upper die 83 is basically the same shape as the upper die 82, but two concave portions 83c and 83d are formed on the bottom surface of the concave portion 83b corresponding to the concave portion 82b in the upper die 82. Is different from the upper die 82 in that An internal space of one of the two recesses 83c and 83d is a cavity 404 corresponding to the other end side conductive wiring 212c of the second wiring layer 212d. Further, the internal space of one of the two recesses 83c and 83d is a cavity 405 corresponding to the one end side conductive wiring 212b of the second wiring layer 212d.

  Then, a melted conductive material (for example, aluminum) serving as the material of the other end side conductive wiring 212c is injected into the cavity 404 and solidified by cooling, whereby the other end side conductive wiring 212c as shown in FIG. Is molded. At the same time, a melted conductive material (for example, aluminum) serving as the material of the one end side conductive wiring 212b is poured into the cavity 405, and cooled and solidified to form the one end side conductive wiring 212b as shown in FIG. To do.

  Next, the upper mold 83 is replaced with an upper mold 84 as shown in FIG. As shown in FIG. 27, the upper mold 84 is basically the same shape as the upper mold 80, but the upper mold 84 is such that a recess 84b is formed on the surface 84a that is brought into contact with the lower mold 70. Different from 80. A part of the internal space of the recess 84b is a cavity 406 corresponding to the insulating part 213x of the third wiring layer 213d.

  Then, a melted insulating resin (for example, polypropylene) serving as the material of the insulating portion 212x is poured into the cavity 406 and solidified by cooling, thereby forming the insulating portion 212x as shown in FIG.

  Next, the upper mold 84 is replaced with an upper mold 85 as shown in FIG. As shown in FIG. 26, the upper die 85 is basically the same shape as the upper die 84, but two concave portions 85c and 85d are formed on the bottom surface of the concave portion 85b corresponding to the concave portion 84b in the upper die 84. Is different from the upper die 82 in that An internal space of one of the two recesses 85c and 85d is a cavity 404 corresponding to the other end side conductive wiring 213c of the third wiring layer 213d. The internal space of one of the two recesses 85c and 85d is a cavity 405 corresponding to the one end side conductive wiring 213b of the third wiring layer 213d.

  Then, a melted conductive material (for example, aluminum) serving as the material of the other end side conductive wiring 213c is poured into the cavity 407 and cooled and solidified, whereby the other end side conductive wiring 213c as shown in FIG. Is molded. At the same time, a melted conductive material (for example, aluminum) serving as the material of the one end side conductive wiring 213b is poured into the cavity 408 and cooled and solidified to form the one end side conductive wiring 213b as shown in FIG. To do.

  Next, the upper mold 85 is replaced with an upper mold 86 as shown in FIG. As shown in FIG. 27, the upper mold 86 is basically the same shape as the upper mold 80, but the upper mold 86 is such that a recess 86 b is formed on the surface 86 a that is brought into contact with the lower mold 70. Different from 80. A part of the internal space of the recess 86b is a cavity 409 corresponding to the insulating part 213x of the third wiring layer 213d.

  Then, a melted insulating resin (for example, polypropylene) serving as the material of the insulating portion 213x is poured into the cavity 409, and cooled and solidified to form the insulating portion 213x as shown in FIG.

  Next, the upper mold 86 is replaced with an upper mold 87 as shown in FIG. As shown in FIG. 28, the upper die 87 has basically the same shape as the upper die 86, but two concave portions 87c and 87d are formed on the bottom surface of the concave portion 87b corresponding to the concave portion 86b in the upper die 86. It is different from the upper mold 86 in that. An inner space of one of the two recesses 87c and 87d is a cavity 410 corresponding to the other end side conductive wiring 214c of the fourth wiring layer 214d. The inner space of one of the two recesses 87c and 87d is a cavity 411 corresponding to the one end side conductive wiring 214b of the fourth wiring layer 214d.

  Then, a melted conductive material (for example, aluminum) serving as the material of the other end side conductive wiring 214c is poured into the cavity 410 and solidified by cooling, whereby the other end side conductive wiring 214c as shown in FIG. Is molded. At the same time, a melted conductive material (for example, aluminum) serving as the material for the one end side conductive wiring 214b is poured into the cavity 411, and cooled and solidified to form the one end side conductive wiring 214b as shown in FIG. To do.

  Next, the upper die 87 is replaced with an upper die 88 as shown in FIG. As shown in FIG. 29, the upper mold 88 is basically the same shape as the upper mold 80, but the upper mold 88 is such that a recess 88b is formed on the surface 88a that is brought into contact with the lower mold 70. Different from 80. A part of the internal space of the recess 88b is a cavity 412 corresponding to the insulating part 214x of the fourth wiring layer 214d.

  Then, a melted insulating resin (for example, polypropylene) serving as a material for the insulating portion 214x is poured into the cavity 412, and cooled and solidified to form the insulating portion 214x as shown in FIG. Through the above steps, the wiring portion 21d in this embodiment is completed.

(Other embodiments)
The present disclosure is not limited to the above-described embodiment, and can be appropriately changed within the scope described in the claims.

  For example, in the first embodiment, the wiring part 21d has two wiring layers 211d and 212d, and in the second embodiment, the wiring part 21d has four wiring layers 211d, 212d, 213d, and 214d. It was set as having. Here, in the wiring part 21d, the number of laminated wiring layers may be any number as long as it is a multiple of two. That is, in the vehicle air conditioner 1 according to the first embodiment or the second embodiment, the wiring portion 21d is configured to have 2n wiring layers (for example, 6, 8,...). Also, the same effects as those of the first and second embodiments can be obtained. Note that n is a natural number.

  Specifically, the configuration having 2n wiring layers is as follows. That is, the wiring part 21d is configured such that the 2n wiring layers are stacked one by one in order from the first wall part 21a side. Each of the 2n wiring layers includes a first wiring layer, a second wiring layer, a third wiring layer,..., A second n-2 wiring layer, a second n in order from the first wall portion 21a side. -1 wiring layer and second n wiring layer. Each of the 2n wiring layers is made of a material having one end side conductive wiring, the other end side conductive wiring, and the one end side conductive wiring and the other end side conductive wiring and having electrical insulation. The insulation part is included. In any two adjacent wiring layers of the 2n wiring layers, in one wiring layer of the two wiring layers, one end side conductive wiring is arranged on a predetermined one side and the other end side is arranged. Conductive wiring is arranged on the predetermined other side. In the other wiring layer of the two wiring layers, the one end side conductive wiring is arranged on the predetermined other side and the other end side conductive wiring is arranged on the predetermined one side.

  Even in the case of the configuration having 2n wiring layers as described above, generation of electromagnetic noise due to the alternating current flowing through the plurality of one end side conductive wirings 21b and the plurality of other end side conductive wirings 21c included in the wiring portion 21d. Is suppressed.

  Further, even in the case of the configuration having 2n wiring layers as described above, the following configuration is more preferable. That is, the other end of the first wiring layer among the conductive wirings included in the 2n wiring layers is the distance between the one end side conductive wiring of the first wiring layer and the other end side conductive wiring of the first wiring layer. It arrange | positions so that it may become shorter than the distance with any conductive wiring different from the side conductive wiring and the other end side conductive wiring of a 2nd wiring layer. The distance between the one end side conductive wiring of the first wiring layer and the other end side conductive wiring of the second wiring layer is the same as that of the first wiring layer among the conductive wirings included in the 2n wiring layers. It arrange | positions so that it may become shorter than the distance with any conductive wiring different from an end side conductive wiring and the other end side conductive wiring of a 2nd wiring layer. The other end of the first wiring layer is the other end of the first wiring layer among the conductive wirings included in the 2n wiring layers. It arrange | positions so that it may become shorter than the distance with any conductive wiring different from the side conductive wiring and the one end side conductive wiring of a 2nd wiring layer. The other end of the (m + 1) th wiring layer among the conductive wirings included in the 2n wiring layers is a distance between the one end side conductive wiring of the mth wiring layer and the other end side conductive wiring of the (m + 1) th wiring layer. It arrange | positions so that it may become shorter than the distance with any conductive wiring which is different from the side conductive wiring and the other end side conductive wiring of the m-1st wiring layer. The distance between the other end side conductive wiring of the mth wiring layer and the one end side conductive wiring of the (m + 1) th wiring layer is one end side of the (m + 1) th wiring layer among the conductive wirings included in the 2n wiring layers. It arrange | positions so that it may become shorter than the distance with any conductive wiring different from the conductive wiring and the one end side conductive wiring of the m-1st wiring layer. Note that m is a natural number and is not particularly limited as long as the value satisfies 2 ≦ m ≦ 2n−1. The distance between the other end side conductive wiring of the second n wiring layer and the one end side conductive wiring of the second n wiring layer is one end side of the second n wiring layer among the conductive wirings included in the 2n wiring layers. It arrange | positions so that it may become shorter than the distance with any conductive wiring different from the conductive wiring and the one end side conductive wiring of the 2n-1 wiring layer.

  Even in the case of such a configuration, the time differentiation of the magnetic field, which is a cause of large electromagnetic noise, can be suppressed, which is particularly meaningful.

  Even in the case of the configuration having 2n wiring layers as described above, it is more preferable that the wiring portion 21d has the following configuration. That is, at least a part of the one end side conductive wiring of the first wiring layer and at least a part of the one end side conductive wiring of the second n wiring layer are point-symmetric with respect to a predetermined point. In addition, at least a part of the other end side conductive wiring of the first wiring layer and at least a part of the other end side conductive wiring of the second n wiring layer are configured to be point-symmetric with respect to a predetermined point. At least part of the other end side conductive wiring of the m-th wiring layer and at least part of the other end side conductive wiring of the second n−m + 1 wiring layer are configured to be point-symmetric with respect to a predetermined point. At least part of the one-end-side conductive wiring of the m-th wiring layer and at least part of the one-end-side conductive wiring of the second n−m + 1 wiring layer are configured to be point-symmetric with respect to a predetermined point. The predetermined point is a predetermined virtual point located inside the wiring portion.

  Even in such a configuration, two corresponding magnetic fields among the magnetic fields generated between the conductive wirings are substantially in the same direction and opposite to each other. For this reason, in the vehicle air conditioner 1 which concerns on this embodiment, generation | occurrence | production of electromagnetic noise is suppressed especially efficiently.

  In addition, in the surface 21z of the first wall portion 21a in the above-described embodiments including the first and second embodiments, a configuration in which a plurality of wiring portions 21d are arranged along the extending direction of the surface 21z (that is, the stacking crossing direction DR2). Also good.

  Moreover, although the wiring part 21d was demonstrated in the said embodiment by the example manufactured by injection molding, the bus bar insert molding to the case members 21 and 22, metal plating to the case members 21 and 22, the case members 21 and 22 The plurality of conductive wires 21b and 21c and the first and second coils and the like of the case member 21 may be formed using a method other than injection molding such as printing. Moreover, the coil components may be mounted on the case members 21 and 22 to constitute the first and second coils 21e and 22b.

  Moreover, in the said embodiment, you may comprise so that the 1st, 2nd coils 21e and 22b may function as a transmission / reception antenna.

  Moreover, in the said embodiment, the magnetic resonance type wireless power transmission which propagates an alternating current from one side of the 1st coil 21e and the 2nd coil 22b to the other by the magnetic resonance in the 1st coil 21e and the 2nd coil 22b is performed. Was configured. Therefore, in the above-described embodiment, the wireless power transmission may be performed by a method other than the magnetic resonance method. That is, for example, in the above-described embodiment, the configuration may be replaced with an electromagnetic induction type configuration in which power is transmitted with an induced current caused by a magnetic field between the first and second coils 21e and 22b opposed to each other. Further, it may be replaced with a configuration of an electric field coupling method in which electric power is transmitted using an electric field generated when two electrodes are close to each other. In this case, specifically, instead of the first coil 21e and the second coil 22b, a planar electrode is disposed on each of the case member 21 and the case member 22, and the two electrodes disposed on each are opposed to each other. To do.

  The first coil 21e and the electrode disposed on the first member 21 among the two electrodes described above correspond to the first element, respectively. The second coil 22b and the electrode disposed on the second member 22 among the two electrodes described above correspond to the second element.

  In the above embodiment, an alternating current is caused to flow through the plurality of conductive wirings 21 b and 21 c formed on the case member 21, and an alternating current is generated by magnetic resonance in the second coil 22 b formed on the case member 22. It was. Here, a configuration may be adopted in which an alternating current is passed through the conductive wirings 22 c and 22 d formed on the case member 22, and an alternating current is generated by electromagnetic induction in the first coil 21 e formed on the case member 21.

  Moreover, in the said embodiment, the alternating current supplied from the power supply 25 to the electrically conductive wiring 22c is wirelessly transmitted from the 2nd coil 22b to the 1st coil 21e, and is supplied to the electrical component 24 via the several electrically conductive wiring 21b, 21c. Was configured to do. Here, in the said embodiment, it is good also as a structure which replaced the electric component 24 and the power supply 25 in the electric circuit of FIG. That is, an AC current supplied from the power supply 25 to the plurality of conductive wires 21b and 21c is wirelessly transmitted from the first coil 21e to the second coil 22b and supplied to the electrical component 24 through the conductive wires 22c and 22d. Also good.

Moreover, in the said embodiment, it was set as the structure which supplies electric power to each of the electrical component 24 via said conductive wiring 21b, 21c, 22c, 22d. Here, in the above-described embodiment, a signal waveform may be superimposed on the alternating current via a signal processing electric circuit in the case member 22, and the superimposed signal waveform may be wirelessly transmitted from the second coil 22b. In this case, a signal wirelessly transmitted from the second coil 22b may be received by the first coil 21e formed on the case member 21, and a signal waveform may be extracted from the received signal.
(Summary)
In the first, second, and fifth aspects shown in some or all of the above embodiments, in the vehicle air conditioner, the wiring portion includes one 2n wiring layer in order from the first wall portion side. It is set as the structure laminated | stacked one by one. Each of the 2n wiring layers includes a first wiring layer, a second wiring layer, a third wiring layer,..., A second n-2 wiring layer, a second n− in order from the first wall side. One wiring layer and a second n wiring layer. Each of the 2n wiring layers is made of a material having one end side conductive wiring, the other end side conductive wiring, and the one end side conductive wiring and the other end side conductive wiring and having electrical insulation. The insulation part is included. In any two adjacent wiring layers of the 2n wiring layers, in one wiring layer of the two wiring layers, one end side conductive wiring is arranged on a predetermined one side and the other end side is arranged. Conductive wiring is arranged on the predetermined other side. In the other wiring layer of the two wiring layers, the one end side conductive wiring is arranged on the predetermined other side and the other end side conductive wiring is arranged on the predetermined one side. Note that n is a natural number.

  For this reason, generation | occurrence | production of the electromagnetic noise resulting from the alternating current which flows into the some one end side conductive wiring and the some other end side conductive wiring contained in a wiring part is suppressed.

  In the third and sixth aspects shown in part or all of the above embodiments, the distance between the one end side conductive wiring of the first wiring layer and the other end side conductive wiring of the first wiring layer is 2n. The conductive wirings included in the individual wiring layers are arranged so as to be shorter than the distance between the conductive wiring different from the other conductive wiring of the first wiring layer and the conductive wiring different from the other conductive wiring of the second wiring layer. . The distance between the one end side conductive wiring of the first wiring layer and the other end side conductive wiring of the second wiring layer is the same as that of the first wiring layer among the conductive wirings included in the 2n wiring layers. It arrange | positions so that it may become shorter than the distance with any conductive wiring different from an end side conductive wiring and the other end side conductive wiring of a 2nd wiring layer. The other end of the first wiring layer is the other end of the first wiring layer among the conductive wirings included in the 2n wiring layers. It arrange | positions so that it may become shorter than the distance with any conductive wiring different from the side conductive wiring and the one end side conductive wiring of a 2nd wiring layer. The other end of the (m + 1) th wiring layer among the conductive wirings included in the 2n wiring layers is a distance between the one end side conductive wiring of the mth wiring layer and the other end side conductive wiring of the (m + 1) th wiring layer. It arrange | positions so that it may become shorter than the distance with any conductive wiring which is different from the side conductive wiring and the other end side conductive wiring of the m-1st wiring layer. The distance between the other end side conductive wiring of the mth wiring layer and the one end side conductive wiring of the (m + 1) th wiring layer is one end side of the (m + 1) th wiring layer among the conductive wirings included in the 2n wiring layers. It arrange | positions so that it may become shorter than the distance with any conductive wiring different from the conductive wiring and the one end side conductive wiring of the m-1st wiring layer. Note that m is a natural number and is not particularly limited as long as the value satisfies 2 ≦ m ≦ 2n−1. The distance between the other end side conductive wiring of the second n wiring layer and the one end side conductive wiring of the second n wiring layer is one end side of the second n wiring layer among the conductive wirings included in the 2n wiring layers. It arrange | positions so that it may become shorter than the distance with any conductive wiring different from the conductive wiring and the one end side conductive wiring of the 2n-1 wiring layer.

  Even in the case of such a configuration, the time differentiation of the magnetic field, which is a cause of large electromagnetic noise, can be suppressed, which is particularly meaningful.

  In the fourth and seventh aspects shown in part or all of the above embodiments, the wiring portion 21d has the following configuration. That is, at least a part of the one end side conductive wiring of the first wiring layer and at least a part of the one end side conductive wiring of the second n wiring layer are point-symmetric with respect to a predetermined point. In addition, at least a part of the other end side conductive wiring of the first wiring layer and at least a part of the other end side conductive wiring of the second n wiring layer are configured to be point-symmetric with respect to a predetermined point. At least part of the other end side conductive wiring of the m-th wiring layer and at least part of the other end side conductive wiring of the second n−m + 1 wiring layer are configured to be point-symmetric with respect to a predetermined point. At least part of the one-end-side conductive wiring of the m-th wiring layer and at least part of the one-end-side conductive wiring of the second n−m + 1 wiring layer are configured to be point-symmetric with respect to a predetermined point. The predetermined point is a predetermined virtual point located inside the wiring portion.

  Even in such a configuration, two corresponding magnetic fields among the magnetic fields generated between the conductive wirings are substantially in the same direction and opposite to each other. For this reason, generation | occurrence | production of electromagnetic noise is suppressed especially efficiently.

DESCRIPTION OF SYMBOLS 1 Vehicle air conditioner 21 Case member 211b One end side conductive wiring 212b One end side conductive wiring 213b One end side conductive wiring 214b One end side conductive wiring 211c Other end side conductive wiring 212c Other end side conductive wiring 213c Other end side conductive wiring 214c Other end side Conductive wiring 21d Wiring portion 21e First coil 22 Case member 22b Second coil

Claims (8)

A first member (21);
A second member (22) coupled to the first member,
The first member includes a first element (21e) for wireless transmission, a wiring part (21d) for wiring, and a first wall part (21a) that holds the first element and the wiring part,
The second member includes a second element (22b) for wireless transmission that propagates an alternating current with the first element, a second element conductive wiring (22c, 22d) connected to the second element, And having a second wall (22a) that holds the second element and the second element conductive wiring and is fixed to the first wall,
n is a natural number,
The wiring portion has 2n wiring layers (211d, 212d, 213d, 214d), and the 2n wiring layers are stacked one by one in order from the first wall portion side,
Each of the 2n wiring layers includes one end side conductive wiring (21b) connected to one end (21ea) of the first element, and the other end side conductive wiring connected to the other end (21eb) of the first element. (21c) and an insulating portion (211x, 212x, 213x, 214x) that covers the one end side conductive wiring and the other end side conductive wiring and has electrical insulation,
A predetermined cross section of the wiring portion when the wiring portion is cut in the stacking direction (DR1) of the 2n wiring layers is a stacking cross section, which is a direction of a straight line included in the stacking cross section and intersects the stacking direction. The predetermined direction is the crossing direction (DR2), one side of the crossing direction is a predetermined one side (S1), and the other side of the crossing direction is the predetermined other side (S2),
In any two adjacent wiring layers of the 2n wiring layers,
In one wiring layer of the two wiring layers, the one end side conductive wiring is disposed on the predetermined one side and the other end side conductive wiring is disposed on the predetermined other side,
In the other wiring layer of the two wiring layers, the one end side conductive wiring is arranged on the predetermined other side and the other end side conductive wiring is arranged on the predetermined one side. Electrical parts for vehicles. N is 1;
2. The vehicle electrical component according to claim 1, wherein the 2n wiring layers are a first wiring layer (211 d) and a second wiring layer (212 d) in order from the first wall portion side. The one end side conductive wiring (211b) in the first wiring layer has a distance (D1) between the one end side conductive wiring (211c) in the first wiring layer and the other end in the second wiring layer. All of the distances (D2) between the side conductive wires (212c) are arranged to be shorter than the distance ( D5 ) between the one end side conductive wires (212b) in the second wiring layer. ,
The distance (D3) between the other end side conductive wiring (211c) in the first wiring layer and the one end side conductive wiring (212b) in the second wiring layer is the one end side in the first wiring layer. It is arranged so as to be shorter than the distance ( D6 ) to the conductive wiring (211b),
The distance (D4) between the other end side conductive wiring (212c) in the second wiring layer and the one end side conductive wiring (212b) in the second wiring layer is the other end in the first wiring layer. The vehicle electrical component according to claim 2, wherein the vehicle electrical component is arranged so as to be shorter than a distance ( D6 ) to the side conductive wiring (211c).
The predetermined virtual point located inside the wiring part is a predetermined point (P),
The wiring part is
At least a part of the one end side conductive wiring (211b) in the first wiring layer and at least a part of the one end side conductive wiring (212b) in the second wiring layer are point-symmetric with respect to the predetermined point. And
At least part of the other end side conductive wiring (211c) in the first wiring layer and at least part of the other end side conductive wiring (212c) in the second wiring layer are mutually based on the predetermined point. The vehicle electrical component according to claim 2 or 3, which is point-symmetric. N is a natural number of 2 or more;
The 2n wiring layers are, in order from the first wall portion side, a first wiring layer (211d), a second wiring layer (212d), ..., a second n-1 wiring layer (213d), a second n The vehicle electrical component according to claim 1, which is a wiring layer (214d). The one end side conductive wiring (211b) in the first wiring layer has a distance (D7) from the other end side conductive wiring (211c) in the first wiring layer, and the other end in the second wiring layer. Any of the distances (D8) between the side conductive wirings (212c) is the first of all the one end side conductive wirings and all the other end side conductive wirings included in the 2n wiring layers. The other end side conductive wiring (211c) in the wiring layer and the other end side conductive wiring (212c) in the second wiring layer are arranged to be shorter than the distance between any conductive wiring,
The 2n wiring layers include the distance (D9) between the other end side conductive wiring (211c) in the first wiring layer and the one end side conductive wiring (212b) in the second wiring layer. Of all the one end side conductive wirings and all of the plurality of other end side conductive wirings, the other end side conductive wiring (211c) in the first wiring layer and the one end side conductive wiring (212c) in the second wiring layer. ) Is arranged to be shorter than the distance to any conductive wiring different from
In the case where m is a natural number and any value satisfying 2 ≦ m ≦ 2n−1,
The distance (D11, D12) between the one end side conductive wiring (212b, 213b) in the mth wiring layer and the other end side conductive wiring (213c, 214c) in the m + 1th wiring layer is 2n. Of all the one-end-side conductive lines and all the other-end-side conductive lines included in the wiring layer, the other-end-side conductive lines (213c, 214c) in the m + 1-th wiring layer are also the m-1-th wiring layer. The other end-side conductive wiring (211c, 212c) is arranged to be shorter than the distance to any conductive wiring,
The other end side conductive wirings (212c, 213c) in the mth wiring layer have the distance (D10, D13) between the one end side conductive wirings (213b, 214b) in the (m + 1) th wiring layer and the 2n pieces. Among all the one end side conductive wirings and all the other end side conductive wirings included in the wiring layer, the one end side conductive wirings (213b, 214b) in the m + 1th wiring layer are also in the m−1th wiring layer. The one end side conductive wiring (211b, 212b) is arranged to be shorter than the distance from any conductive wiring,
The 2n wiring layers include the distance (D14) between the other end side conductive wiring (214c) in the second n wiring layer and the one end side conductive wiring (214b) in the second n wiring layer. Of all the one end side conductive wirings and all the other end side conductive wirings, the one end side conductive wiring (214b) in the second n wiring layer and the one end side conductive wiring (213b) in the second n-1 wiring layer The vehicle electrical component according to claim 5, wherein the vehicle electrical component is disposed so as to be shorter than a distance to any conductive wiring different from the above. The predetermined virtual point located inside the wiring part is a predetermined point (P),
In the case where m is a natural number and any value satisfying 2 ≦ m ≦ 2n−1,
The wiring part is
At least part of the one end side conductive wiring (211b) in the first wiring layer and at least part of the one end side conductive wiring (214b) in the second n wiring layer are point-symmetric with respect to the predetermined point. And
At least a part of the other end-side conductive wiring (211c) in the first wiring layer and at least a part of the other-end side conductive wiring (214c) in the second n wiring layer are mutually on the basis of the predetermined point. Point-symmetric,
At least a part of the other end side conductive wiring (212c) in the mth wiring layer and at least a part of the other end side conductive wiring (213c) in the second n−m + 1 wiring layer are based on the predetermined point. Are point-symmetric with each other as
At least a part of the one end side conductive wiring (212b) in the m-th wiring layer and at least a part of the one end side conductive wiring (213b) in the second n−m + 1 wiring layer are mutually based on the predetermined point. The vehicle electrical component according to claim 5, which is point-symmetric.   The vehicle electrical component according to any one of claims 1 to 7, wherein a plurality of the wiring portions are arranged along the stacking crossing direction.

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