JP5720593B2 - Electric compressor - Google Patents

Description

  The present invention relates to an electric compressor in which a compressor, an electric motor, and a motor drive circuit are housed in a housing.

  2. Description of the Related Art Conventionally, there is known an electric compressor in which a compressor that is driven by rotation of a rotating shaft, an electric motor that rotates the rotating shaft, and a motor drive circuit for driving the electric motor are housed in a housing (for example, Patent Document 1). The motor drive circuit is driven by power supplied from an external power source. The housing is formed with a cylindrical connector connecting portion extending outwardly from the outer surface. A wiring connection for supplying electric power from an external power source to the motor drive circuit is accommodated in the connector connection. The motor drive circuit is provided with a board on which electrical components such as switching elements are mounted, and the board has a conductive member that extends toward the connector connection part and electrically connects the board and the wiring connection part. Is provided.

  As shown in FIG. 5, the conventional wiring connection part 80 is arrange | positioned in the connector connection part 92 formed in the outer surface of a housing (not shown). The wiring connection portion 80 includes a wire 81 formed by coating a conductive wire portion 81a formed by bundling a plurality of conductive wires with an insulating coating 81b, and an external power supply side provided at one end of the wire 81 and electrically connected to the external power supply 90 A terminal 82 and a motor drive circuit side terminal 83 provided at the other end of the wire 81 and electrically connected to a motor drive circuit (not shown).

  A crimping portion 82a (one end side connection portion) is formed at one end of the external power supply side terminal 82, and a connection portion 82b (other end side connection portion) electrically connected to the external power supply 90 is formed at the other end. Has been. A caulking portion 83a (one end side connecting portion) is formed at one end of the motor drive circuit side terminal 83, and a connecting portion 83b (other end side connecting portion) electrically connected to the conductive member 91 is formed at the other end. Is formed.

  At both ends of the wire 81, the conductor portion 81a is exposed from the insulating coating 81b. Then, the one end of the wire 81 and the external power supply side terminal 82 are connected by caulking the conducting wire portion 81a exposed from the insulating coating 81b at one end of the wire 81 by the caulking portion 82a of the external power supply side terminal 82. ing. Also, the other end of the wire 81 and the motor drive circuit side terminal 83 are obtained by caulking the conductive wire portion 81a exposed from the insulating coating 81b at the other end of the wire 81 by the caulking portion 83a of the motor drive circuit side terminal 83. And are connected.

JP 2009-74517 A

  By the way, there is a demand for shortening the length of the connector connecting portion 92 in the extending direction in accordance with the mounting space or the arrangement position of the vehicle on which the electric compressor is mounted. Therefore, it is necessary to shorten the wire 81 of the wiring connection portion 80 according to the length of the connector connection portion 92.

  Here, the caulking portion 82a and the conducting wire portion 81a of the external power supply side terminal 82 and the caulking portion 83a and the conducting wire portion 81a of the motor drive circuit side terminal 83 are caulked. If the caulking machine is used while gripping the wire, the wire 81 has flexibility, and therefore, the caulking position (connection position) is distorted, and each connection workability is poor. Therefore, generally, the caulking portion 82a and the conducting wire portion 81a of the external power supply side terminal 82 and the caulking portion 83a and the conducting wire portion 81a of the motor drive circuit side terminal 83 are caulked by a person holding the wire 81 in hand. It is done with a caulking machine while holding it. By doing so, the caulking position can be finely adjusted by a human hand, and the caulking workability can be improved.

  However, the shorter the length of the wire 81, the closer the distance between the human hand and the caulking machine, and thus it becomes difficult to perform such connection work, and the length of the entire wiring connection portion 80 is reduced. It becomes difficult to shorten. As a result, it becomes impossible to shorten the length of the connector connecting portion 92 in the extending direction in accordance with the mounting space or the arrangement position of the vehicle.

  Further, for example, when connecting the connection portion 82b of the external power supply side terminal 82 and the external power supply 90, or connecting the connection portion 83b of the motor drive circuit side terminal 83 and the conductive member 91, the connection of the external power supply side terminal 82 is performed. A dimensional tolerance is generated between the portion 82 b and the external power supply 90 or between the connecting portion 83 b of the motor drive circuit side terminal 83 and the conductive member 91. Therefore, when connecting the connection portion 82b of the external power supply side terminal 82 and the external power supply 90 or connecting the connection portion 83b of the motor drive circuit side terminal 83 and the conductive member 91, the external power supply side terminal 82 and the external power supply 90 are connected. It is desired to absorb the dimensional tolerance that occurs between the motor drive circuit side terminal 83 and the conductive member 91.

  The present invention has been made paying attention to such problems existing in the prior art, and its purpose is to shorten the entire length of the wiring connection portion compared to the wiring connection portion using wires. Another object of the present invention is to provide an electric compressor capable of absorbing a dimensional tolerance between an external power supply side terminal and an external power supply or between a motor drive circuit side terminal and a conductive member.

  In order to achieve the above object, according to the first aspect of the present invention, the housing includes a compression portion, an electric motor, and a motor drive circuit, and a connector connection portion is provided on the outer surface of the housing. A wiring connection part for supplying electric power from an external power source to the motor drive circuit is disposed in the connector connection part, and the motor drive circuit extends toward the connector connection part and includes the motor drive circuit. An electric compressor provided with a conductive member for electrically connecting the wiring connection portion, wherein the wiring connection portion has one end side connection portion at one end and electrically connected to the external power source at the other end. The external power supply side terminal having the other end side connection portion to be connected, and the other end side connection portion having one end side connection portion at one end and electrically connected to the conductive member at the other end. A driving circuit side terminal; and a connecting member that connects the external power supply side terminal and the motor driving circuit side terminal. The connecting member is connected to one end side connection portion of the external power supply side terminal. A first metal plate, a second metal plate connected to one end side connection portion of the motor drive circuit side terminal, and a mesh wire connecting the first metal plate and the second metal plate. It is a summary.

  According to this invention, the 1st metal plate and the 2nd metal plate have rigidity compared with a wire. Therefore, for example, even if a machine such as a robot arm holds the first metal plate or the second metal plate and tries to connect to the external power supply side terminal or the motor drive circuit side terminal, one end side of the external power supply side terminal It can suppress that the connection position with respect to the one end side connection part of a connection part or a motor drive circuit side terminal blurs. Therefore, it is not necessary for a person to perform a connection operation while holding the first metal plate or the second metal plate in his / her hand, and even if the length of the first metal plate and the second metal plate is shortened, the first metal plate or the second metal plate is not necessary. The external power supply side terminal or the motor drive circuit side terminal can be easily connected to the two metal plates. As a result, the entire length of the first metal plate and the second metal plate can be shortened as much as possible, and the entire length of the wiring connection portion can be easily shortened compared to the wiring connection portion using wires. it can.

  Further, since the mesh wire is flexible, when connecting the other end side connection portion of the external power supply side terminal and the external power source, or when connecting the other end side connection portion of the motor drive circuit side terminal and the conductive member. The bending of the mesh wire absorbs the dimensional tolerance generated between the other end side connection portion of the external power supply side terminal and the external power supply or between the other end side connection portion of the motor drive circuit side terminal and the conductive member. be able to. As a result, the connection between the other end side connection portion of the external power supply side terminal and the external power supply, or the connection between the other end side connection portion of the motor drive circuit side terminal and the conductive member can be facilitated.

  The invention according to claim 2 is the invention according to claim 1, wherein the connector connecting portion is formed of a metal material, and is disposed between the wiring connecting portion and the connector connecting portion. The gist of the invention is to have an insulating member for positioning the wiring connection portion in the connector connection portion.

  In order to ensure the strength of the connector connecting portion, it is preferable to form the connector connecting portion from a metal material. And according to this invention, a wiring connection part can be positioned in a connector connection part, ensuring the insulation between a wiring connection part and a connector connection part by an insulating member. As a result, for example, it is possible to restrict the wiring connecting portion from moving in the connector connecting portion due to vibration during traveling of the vehicle.

  According to the present invention, the entire length of the wiring connection portion can be shortened as compared to the wiring connection portion using the wire, and between the external power supply side terminal and the external power supply, or the motor drive circuit side terminal. A dimensional tolerance between the conductive member and the conductive member can be absorbed.

(A) is a longitudinal cross-sectional view which shows the electric compressor in embodiment, (b) is a partial longitudinal cross-sectional view which expands and shows the connector connection part periphery. AA line sectional view in Drawing 1 (b). The figure which shows typically the state which has joined the 1st metal plate and the mesh wire by resistance welding. The fragmentary longitudinal cross-sectional view which expands and shows the connector connection part periphery in another embodiment. The cross-sectional view which expands and shows the connector connection part periphery in a prior art example.

Hereinafter, an embodiment in which the present invention is embodied in an electric compressor mounted on a hybrid vehicle as a vehicle and used in a vehicle air conditioner will be described with reference to FIGS.
As shown in FIG. 1A, the housing 11 of the electric compressor 10 is formed of a metal material (aluminum in this embodiment). The housing 11 includes a bottomed cylindrical intermediate housing 12 constituting an intermediate portion of the housing 11, a discharge housing 13 joined to the open end of the intermediate housing 12, and an inverter housing joined to the bottom end face of the intermediate housing 12. 14. The intermediate housing 12 and the discharge housing 13 are fastened together with a bolt B1 via a gasket G. In addition, the intermediate housing 12 and the inverter housing 14 are fastened together by bolts B <b> 2, and a housing space 17 is defined between the intermediate housing 12 and the inverter housing 14.

  A discharge chamber 15 is defined between the intermediate housing 12 and the discharge housing 13. A discharge port 16 is formed on the end surface of the discharge housing 13, and the discharge chamber 15 is connected to an external refrigerant circuit (not shown) via the discharge port 16. A suction port (not shown) is formed on the inverter housing 14 side of the intermediate housing 12, and the inside of the intermediate housing 12 is connected to an external refrigerant circuit via the suction port.

  A rotating shaft 23 is rotatably supported in the intermediate housing 12. In addition, the intermediate housing 12 accommodates a compression unit 18 for compressing the refrigerant and an electric motor 19 for driving the compression unit 18, and the electric motor 19 is driven in the accommodation space 17. A motor drive circuit 30 for controlling the above is accommodated. Therefore, the compression unit 18, the electric motor 19, and the motor drive circuit 30 are accommodated in the housing 11 so as to be arranged in this order along the axial direction of the rotary shaft 23.

First, the compression unit 18 will be described.
The compression unit 18 includes a fixed scroll 20 fixed in the intermediate housing 12 and a movable scroll 21 disposed to face the fixed scroll 20. A compression chamber 22 whose volume can be changed is defined between the fixed scroll 20 and the movable scroll 21. The fixed scroll 20 is formed with a discharge passage 28 that allows the compression chamber 22 and the discharge chamber 15 to communicate with each other, and a discharge valve 29 is provided on an end surface of the fixed scroll 20.

Next, the electric motor 19 will be described.
The electric motor 19 includes a rotor 24 (rotor) that rotates integrally with the rotating shaft 23, and a stator 25 (stator) that is fixed to the inner peripheral surface of the intermediate housing 12 so as to surround the rotor 24. The rotor 24 includes a rotor core 24a fixed to the rotary shaft 23 so as to be rotatable integrally with the rotary shaft 23, and a plurality of permanent magnets 24b provided on the peripheral surface of the rotor core 24a. The stator 25 is formed by winding a coil 25b around a tooth (not shown) of a stator core 25a that has a substantially annular shape and is fixed to the inner peripheral surface of the intermediate housing 12.

Next, the motor drive circuit 30 will be described.
The motor drive circuit 30 includes a flat board 31 fixed to the inner surface of the inverter housing 14 and a plurality of types of electrical components 32 a to 32 d mounted on the board 31 in the accommodation space 17. The substrate 31 is arranged in the inverter housing 14 so as to extend along the radial direction of the rotating shaft 23. The motor drive circuit 30 supplies power to the stator 25 of the electric motor 19 based on a command from an air conditioner ECU (not shown). The substrate 31 is provided with a conductive member 33 that extends toward the connector connecting portion 42 that projects from the outer peripheral surface of the inverter housing 14.

  As shown in FIG. 1B, the connector connecting portion 42 is made of a metal material (aluminum in this embodiment). The connector connecting portion 42 is connected to the cylindrical first extending portion 42a that protrudes outward from the outer peripheral surface of the inverter housing 14 so as to extend in the radial direction of the rotating shaft 23, and the first extending portion 42a. And a cylindrical second extending portion 42b extending toward the electric motor 19 along the axial direction of 23. A connecting portion 421a connected to a connecting hole 141 formed in the inverter housing 14 is formed in the first extending portion 42a. The connector connection portion 42 is connected to the inverter housing 14 by the connection between the connection hole 141 and the connection portion 421a.

  The length of the second extending portion 42b in the extending direction is set to a length according to the mounting space, the arrangement position, and the like of the hybrid vehicle on which the electric compressor 10 of the present embodiment is mounted. A connector housing 44 made of synthetic resin is attached to the opening 421b of the second extending portion 42b. The connector housing 44 has a cylindrical shape, a fitting portion 44a fitted into the opening 421b, a contact portion 44b that is continuous with the fitting portion 44a and contacts the opening end 422b of the second extending portion 42b, The connecting portion forming portion 44c is connected to the contact portion 44b and connected to the external power source 40.

  A wiring connection portion 50 for supplying power from the external power supply 40 to the motor drive circuit 30 is accommodated in the second extending portion 42 b and the connector housing 44. The wiring connection unit 50 includes an external power supply side terminal 51 electrically connected to the external power supply 40, a motor drive circuit side terminal 52 electrically connected to the motor drive circuit 30, and the external power supply side terminal 51 and the motor drive circuit. The connecting member 56 is connected to the side terminal 52. The connecting member 56 includes a first metal plate 53, a second metal plate 54, and a mesh wire 55.

  One end side connection portion 51 a is formed at one end of the external power supply side terminal 51, and the other end side connection portion 51 b electrically connected to the external power supply 40 is formed at the other end. One end side connection portion 52 a is formed at one end of the motor drive circuit side terminal 52, and the other end side connection portion 52 b electrically connected to the conductive member 33 is formed at the other end. The first metal plate 53 and the second metal plate 54 are long and thin plates. One end of the first metal plate 53 and one end side connection portion 51a of the external power supply side terminal 51 are joined (connected) by welding (resistance welding in the present embodiment), and the other end of the first metal plate 53 and the mesh line. One end of 55 is joined (connected) by welding (resistance welding in the present embodiment). In addition, one end of the second metal plate 54 and one end side connection portion 52a of the motor drive circuit side terminal 52 are joined (connected) by welding (in this embodiment, resistance welding), and the other end of the second metal plate 54 is connected. And the other end of the mesh 55 are joined (connected) by welding (resistance welding in this embodiment). Therefore, the first metal plate 53 and the second metal plate 54 are connected by the mesh wire 55, and the external power supply side terminal 51 and the motor drive circuit side are connected by the first metal plate 53, the second metal plate 54 and the mesh wire 55. Terminal 52 is connected. The first metal plate 53, the second metal plate 54, and the mesh 55 are formed such that the length obtained by adding the lengths in the longitudinal direction is shorter than the length in the extending direction of the second extending portion 42b. Has been.

  As shown in FIG. 2, two wiring connection portions 50 are arranged in parallel in the electric compressor 10 of the present embodiment. The motor drive circuit side terminal 52, the second metal plate 54, and the mesh wire 55 of each wiring connection portion 50 are arranged in a synthetic resin cluster block 45 having a rectangular box shape housed in the second extending portion 42b. It is installed. In the cluster block 45, the motor drive circuit side terminal 52 of one wiring connection part 50, the first housing part 45a for housing the second metal plate 54 and the mesh 55, and the motor drive circuit side terminal of the other wiring connection part 50 are included. 52, the second metal plate 54, and the second housing portion 45b for housing the mesh wire 55. By this cluster block 45, the motor drive circuit side terminal 52, the second metal plate 54 and the mesh 55 of one wiring connection portion 50, and the motor drive circuit side terminal 52 and the second metal plate 54 of the other wiring connection portion 50 are used. Insulation with the wire 55 is ensured. Furthermore, the insulation between each wiring connection part 50 and the connector connection part 42 is ensured by the cluster block 45. Therefore, in this embodiment, the cluster block 45 functions as an insulating member.

  The external power supply side terminal 51 and the first metal plate 53 of each wiring connection portion 50 are accommodated in the connector housing 44. Inside the connector housing 44 is a first housing portion 441 for housing the external power supply side terminal 51 and the first metal plate 53 of one wiring connection portion 50, and the external power supply side terminal 51 and the first metal plate of the other wiring connection portion 50. And a second accommodating portion 442 that accommodates 53. The connector housing 44 provides insulation between the external power supply side terminal 51 and the first metal plate 53 of one wiring connection portion 50 and the external power supply side terminal 51 and the first metal plate 53 of the other wiring connection portion 50. It is secured. Further, the connector housing 44 ensures insulation between each wiring connection portion 50 and the connector connection portion 42. Therefore, in this embodiment, the connector housing 44 functions as an insulating member.

  And the other end side connection part 52b of the motor drive circuit side terminal 52 and the conductive member 33 are electrically connected, and the other end side connection part 51b of the external power supply side terminal 51 and the external power supply 40 are electrically connected. By being connected, the external power supply 40 and the motor drive circuit 30 are electrically connected via the wiring connection portion 50 and the conductive member 33.

  In the electric compressor 10 having the above configuration, electric power from the external power supply 40 is supplied to the motor drive circuit 30 via the wiring connection portion 50 and the conductive member 33, and electric power is supplied from the motor drive circuit 30 to the electric motor 19. Then, the rotor 24 rotates, and the rotating shaft 23 rotates as the rotor 24 rotates. When the rotating shaft 23 rotates, the volume of the compression chamber 22 between the movable scroll 21 and the fixed scroll 20 decreases in the compression unit 18. Then, the refrigerant is sucked into the intermediate housing 12 from the external refrigerant circuit via the suction port, and the refrigerant sucked into the intermediate housing 12 is compressed through the suction passage 27 provided in the intermediate housing 12. It is sucked in and compressed in the compression chamber 22. The refrigerant compressed in the compression chamber 22 is discharged through the discharge passage 28 into the discharge chamber 15 by pushing away the discharge valve 29. Then, the refrigerant discharged into the discharge chamber 15 flows out to the external refrigerant circuit via the discharge port 16 and is recirculated into the intermediate housing 12.

Next, the operation of this embodiment will be described.
For example, while a machine such as a robot arm holds the first metal plate 53 or the second metal plate 54, one end of the first metal plate 53 and one end side connection portion 51 a of the external power supply side terminal 51, or the second metal plate 54. Let us consider a case in which one end of the motor is connected to one end side connection portion 52 a of the motor drive circuit side terminal 52. In this case, since the first metal plate 53 and the second metal plate 54 are more rigid than the conventional wire, the one end side connection portion 51a of the external power supply side terminal 51 or the motor drive circuit side terminal 52 is provided. It is suppressed that the connection position with respect to the one end side connection part 52a blurs. As a result, it is not necessary for the person to perform the connection work while holding the first metal plate 53 or the second metal plate 54 in his / her hand, and the entire length of the first metal plate 53 and the second metal plate 54 can be shortened. Easy connection between one end of the first metal plate 53 and one end side connection portion 51a of the external power supply side terminal 51 or one end of the second metal plate 54 and one end side connection portion 52a of the motor drive circuit side terminal 52 It becomes.

  According to the electric compressor 10 having the above configuration, the total length of the first metal plate 53, the second metal plate 54, and the mesh wire 55 is formed to be shorter than the length of the second extending portion 42b in the extending direction. ing. And the length of the whole wiring connection part 50 is shorter than the length of the extension direction of the 2nd extension part 42b. As a result, the length of the second extending portion 42b in the extending direction is shortened according to the mounting space, the arrangement position, and the like of the hybrid vehicle on which the electric compressor 10 of the present embodiment is mounted. Therefore, the mountability with respect to the hybrid vehicle in the electric compressor 10 is improved.

  Moreover, the mesh line 55 has flexibility. Therefore, when connecting the other end side connecting portion 51b of the external power source side terminal 51 and the external power source 40, or connecting the other end side connecting portion 52b of the motor drive circuit side terminal 52 and the conductive member 33, the mesh 55 is formed. Bend. Due to the bending of the mesh 55, the connection between the other end side connection portion 51 b of the external power supply side terminal 51 and the external power supply 40 or the other end side connection portion 52 b of the motor drive circuit side terminal 52 and the conductive member 33 is performed. The resulting dimensional tolerances are absorbed.

Next, a method for welding the first metal plate 53 and the mesh wire 55 will be described.
As shown in FIG. 3, first, a part of the mesh wire 55 is brought into contact with the flat portion 53a of the first metal plate 53, and the first metal plate 53 and the mesh wire 55 are sandwiched between the pair of weld joint portions T1 and T2. Like that. Specifically, one weld joint portion T1 is disposed in a portion of the mesh wire 55 opposite to the portion in contact with the first metal plate 53, and is opposite to the flat portion 53a in the first metal plate 53. The other weld joint T2 is disposed on the side surface. And an electric current is sent between welded joint part T1, T2.

  Then, the current that flows from the welded joint portion T <b> 1 flows to the welded joint portion T <b> 2 via the mesh 55 and the first metal plate 53. Thereby, resistance heat is generated at the contact portion between the mesh wire 55 and the first metal plate 53, and the portion of the mesh wire 55 that is in contact with the first metal plate 53 and the first metal plate 53 by this resistance heat. The portions in contact with the mesh wire 55 are heated and melted. And the 1st metal plate 53 and the mesh | network wire 55 are mutually joined by cooling the site | part which each melt | dissolved. In addition, since the welding method of the 2nd metal plate 54 and the mesh wire 55 is the same as the welding method of the 1st metal plate 53 and the mesh wire 55, the detailed description is abbreviate | omitted.

In the above embodiment, the following effects can be obtained.
(1) The wiring connection portion 50 is formed by the external power supply side terminal 51, the motor drive circuit side terminal 52, the first metal plate 53, the second metal plate 54, and the mesh 55. Therefore, since the first metal plate 53 and the second metal plate 54 are more rigid than the conventional wire, one end side connection portion 51a of the external power supply side terminal 51 or one end side of the motor drive circuit side terminal 52 is provided. It can suppress that the connection position with respect to the connection part 52a blurs. Therefore, for example, even if the lengths of the first metal plate 53 and the second metal plate 54 are shortened, the one end side connection portion 51 a of the external power supply side terminal 51 can be easily connected to the first metal plate 53. In addition, the one end side connection portion 52a of the motor drive circuit side terminal 52 can be easily connected to the second metal plate. As a result, the lengths of the first metal plate 53 and the second metal plate 54 can be shortened as much as possible, and the entire length of the wiring connection portion 50 can be shortened compared to the wiring connection portion using wires. Can do.

  Moreover, the mesh line 55 has flexibility. Therefore, when connecting the other end side connecting portion 51b of the external power source side terminal 51 and the external power source 40, or connecting the other end side connecting portion 52b of the motor drive circuit side terminal 52 and the conductive member 33, the mesh 55 is formed. Bend. As a result, the dimensional tolerance generated between the other end side connection portion 51b of the external power supply side terminal 51 and the external power supply 40 or between the other end side connection portion 52b of the motor drive circuit side terminal 52 and the conductive member 33 is absorbed. can do. As a result, the connection between the other end side connection portion 51b of the external power supply side terminal 51 and the external power supply 40, or the connection between the other end side connection portion 52b of the motor drive circuit side terminal 52 and the conductive member 33 is facilitated. can do.

  (2) The connector connecting portion 42 is formed of a metal material, and the cluster block 45 and the connector housing 44 are disposed between the wiring connecting portion 50 and the connector connecting portion 42. In order to ensure the strength of the connector connecting portion 42, the connector connecting portion 42 is preferably formed of a metal material. The insulation between the wiring connection portion 50 and the connector connection portion 42 can be ensured by the cluster block 45 and the connector housing 44. Moreover, since the wiring connection part 50 is positioned by the cluster block 45 and the connector housing 44 in the connector connection part 42, for example, the wiring connection part 50 is moved in the connector connection part 42 due to vibration during travel of the hybrid vehicle. It can be regulated that it moves.

  (3) The insulation between one wiring connection part 50 and the other wiring connection part 50 was ensured by the cluster block 45 and the connector housing 44. Therefore, for example, it is possible to prevent both the wiring connection portions 50 from contacting each other and conducting with each other due to vibration during traveling of the hybrid vehicle.

  (4) The first metal plate 53 is provided between the mesh wire 55 and the one end side connection portion 51a of the external power supply side terminal 51, and the flat portion 53a of the first metal plate 53 and a part of the mesh wire 55 are resisted. Joined by welding. For this reason, a current path (indicated by arrow E in FIG. 3) is formed such that one welded joint portion T1 → net wire 55 → first metal plate 53 → the other weld joint portion T2; It can be easily welded to the metal plate 53. The same applies to the relationship between the second metal plate 54 and the mesh 55. Therefore, the flexible mesh wire 55 can be easily provided in a part of the wiring connection portion 50.

In addition, you may change the said embodiment as follows.
In the embodiment, the second extending portion 42b of the connector connecting portion 42 is provided so as to extend along the axial direction of the rotating shaft 23. However, the present invention is not limited to this, for example, as shown in FIG. The second extending portion 42 b of the connector connecting portion 42 may be provided so as to extend along the radial direction of the rotating shaft 23. That is, the extending direction of the connector connecting portion may be changed as appropriate in accordance with the mounting space, arrangement position, etc. of the vehicle on which the electric compressor is mounted.

In the embodiment, the connector connecting portion 42 may be integrally formed simultaneously with the formation of the inverter housing 14.
In the embodiment, the connector connection portion 42 may be made of, for example, a synthetic resin. In this case, you may delete the insulation member for ensuring the insulation with the wiring connection part 50 and a connector connection part.

  In the embodiment, the connection between the first metal plate 53 and the one end side connection portion 51 a of the external power supply side terminal 51 and the connection between the second metal plate 54 and the one end side connection portion 52 a of the motor drive circuit side terminal 52 are caulked. You may connect by. Even in this case, the one end side connection portion 51a of the external power supply side terminal 51 and the first metal plate 53 are caulked, and the one end side connection portion 52a of the motor drive circuit side terminal 52 and the second metal plate 54 are connected. When caulking, it is possible to suppress the caulking position from being shaken like a wire. Therefore, for example, a machine such as a robot arm can perform a caulking operation by a caulking machine while holding the first metal plate 53 or the second metal plate 54. As a result, even if the first metal plate 53 and the second metal plate 54 are shortened as much as possible, the caulking operation does not become difficult, and the entire wiring connection portion 50 is compared with the wiring connection portion using wires. Can be easily shortened.

  In the embodiment, the entire wiring connection portion 50 may be accommodated by the cluster block 45 to secure insulation between the wiring connection portion 50 and the connector connection portion 42, or the entire wiring connection portion 50 may be secured by the connector housing 44. May be accommodated to ensure insulation between the wiring connection portion 50 and the connector connection portion 42.

In the embodiment, the mesh 55 is disposed in the cluster block 45, but is not limited thereto, and may be disposed in the connector housing 44.
In the embodiment, the two wiring connection portions 50 are arranged in parallel. However, the present invention is not limited to this, and for example, three wiring connection portions 50 may be arranged in parallel. That is, the number of the wiring connection portions 50 arranged in parallel is not particularly limited.

  In the embodiment, the compression unit 18, the electric motor 19, and the motor drive circuit 30 are accommodated in the housing 11 so as to be arranged in this order along the axial direction of the rotary shaft 23. For example, the electric motor 19, the compression unit 18, and the motor drive circuit 30 may be housed in the housing 11 so as to be arranged in the order of the axial direction of the rotary shaft 23.

  In embodiment, the compression part 18 is not restricted to the type comprised by the fixed scroll 20 and the movable scroll 21, For example, you may change into a piston type, a vane type, etc.

The present invention may be applied not only to vehicle air conditioners but also to other air conditioners.
The present invention is embodied in the electric compressor 10 that is mounted on a hybrid vehicle and used in a vehicle air conditioner. However, the present invention is not limited to this, and is not limited to a hybrid vehicle, for example, an automobile that is driven only by an engine, or an electric automobile And may be embodied in an electric compressor used in a vehicle air conditioner.

Next, the technical idea that can be grasped from the above embodiment and other examples will be described below.
(A) The connector connecting portion is provided so as to extend toward the electric motor along an axial direction of a rotating shaft accommodated in the housing. Electric compressor.

  (B) The technical idea, wherein the compression unit, the electric motor, and the motor drive circuit are accommodated in the housing so as to be arranged in this order along the axial direction of the rotating shaft. The electric compressor described in (a).

  DESCRIPTION OF SYMBOLS 10 ... Electric compressor, 11 ... Housing, 18 ... Compression part, 19 ... Electric motor, 23 ... Rotary shaft, 30 ... Motor drive circuit, 33 ... Conductive member, 40 ... External power supply, 42 ... Connector connection part, 44 ... Insulation Connector housing that functions as a member, 45... Cluster block that functions as an insulating member, 50... Wiring connection portion, 51... External power supply side terminal, 51 a. Side terminal, 52a ... one end side connection portion, 52b ... other end side connection portion, 53 ... first metal plate, 54 ... second metal plate, 55 ... mesh wire, 56 ... connecting member.

Claims (2)

The housing contains a compression section, an electric motor, and a motor drive circuit, and a connector connection portion is provided on the outer surface of the housing, and electric power from an external power source is supplied to the motor drive circuit in the connector connection portion. A wiring connecting portion for supplying the motor driving circuit to the motor driving circuit, and a conductive member that extends toward the connector connecting portion and electrically connects the motor driving circuit and the wiring connecting portion. An electric compressor,
The wiring connection portion is
An external power source side terminal having one end side connecting portion at one end and having the other end side connecting portion electrically connected to the external power source at the other end;
A motor drive circuit side terminal having one end side connection portion at one end and the other end side connection portion electrically connected to the conductive member at the other end;
A connecting member that connects the external power supply side terminal and the motor drive circuit side terminal;
The connecting member is
A first metal plate connected to one end side connection portion of the external power supply side terminal;
A second metal plate connected to one end side connection portion of the motor drive circuit side terminal;
An electric compressor comprising: a mesh wire connecting the first metal plate and the second metal plate. The connector connecting portion is made of a metal material,
2. The electric motor according to claim 1, further comprising an insulating member disposed between the wiring connection portion and the connector connection portion and positioning the wiring connection portion in the connector connection portion. Compressor.