DE102018107392A1 - MOTOR DRIVEN COMPRESSOR - Google Patents

Abstract

An electric motor of a motor-driven compressor has a stator and a rotor. The rotor has a rotor end and the stator has a stator end located on the same side as the rotor end. The compressor has a motor wire, a conductive component and a connector. The connector has a connection port and a cluster block. The conductive member has an end connected to the connection terminal and located inward of the stator in the radial direction. The cluster block has a rotor opposing portion and a stator opposing portion. In the axial direction, the distance between the stator opposing portion and the stator end is smaller than the distance between the rotor opposing portion and the rotor end.

Description

The present invention relates to a motor-driven compressor having a compression unit that compresses a fluid, an electric motor that rotates a rotary shaft, and a drive circuit that drives the electric motor.

A motor-driven compressor has a housing that accommodates a compression unit and an electric motor. The electric motor has a cylindrical stator and a rotor disposed on the inner side of the stator. The stator has a stator core and windings wrapped around the stator core. An annular coil end protrudes from each of the two end surfaces of the stator core in the axial direction of the rotary shaft. Motor wires extend from the coil end, which is closer to a drive circuit. Through holes extend through the housing. Conductive components are inserted through the through holes. The conductive components each have a first end electrically connected to the drive circuit.

A connector is disposed in the housing to connect the motor wires to circuit wires. The connector has connection terminals and an insulating cluster block. Each connection terminal connects one of the motor wires and a second end of one of the conductive components. The cluster block receives the connection connections. The electric motor is driven when it is supplied with power from the drive circuit via the conductive components, the connection terminals and the motor wires. The electric motor then rotates the rotary shaft and drives the compression unit so that the compression unit compresses a refrigerant serving as a fluid.

Japanese Laid-Open Patent Publication No. 2014-34918 describes an example of a motor-driven compressor in which the second end of each conductive member is located inwardly of the coil end of the stator in the radial direction of the rotary shaft. Thus, a part of the cluster block is also located inward from the coil end in the radial direction of the rotary shaft. This construction allows a reduction in size of the engine driven compressor.

When a part of the cluster block is located inward in the radial direction from the coil end, as in the motor-driven compressor of Japanese Laid-Open Patent Publication No. 2014-34918, vibration generated when the vehicle is running may cause the cluster block in the axial direction of the rotating shaft move, and the cluster block can come into contact with the rotor. In a state where the cluster block is in contact with the rotor, rotation of the rotor generates noise.

It is an object of the present invention to provide a motor driven compressor which avoids contact of the cluster block with the rotor.

SUMMARY OF THE INVENTION

A motor-driven compressor which solves the above problem has a housing, a rotary shaft accommodated in the housing, an electric motor accommodated in the housing and configured to rotate the rotary shaft, a compression unit accommodated in the housing is received and configured to compress a fluid when the rotating shaft rotates, and a drive circuit or driving circuit that drives the electric motor. The electric motor has a cylindrical stator and a rotor located on an inner side of the stator. One of two end portions of the rotor in an axial direction of the rotary shaft serves as a first end portion. The stator has a stator core and a coil end protruding from an end surface of the stator core in the axial direction of the rotary shaft. One of two end portions of the stator in the axial direction of the rotary shaft, which is located on the same side as the first end portion of the rotor, serves as a first end portion. The motor-driven compressor further has a motor wire extending from the coil end, a conductive member, and a connector. The conductive member is inserted through a through hole of the housing and has a first end electrically connected to the drive circuit. The connector is located in the housing and interconnects the motor wire and the conductive member. The connector has a connection terminal and an insulating cluster block. The connection terminal is connected to the motor wire and electrically connected to a second end of the conductive member. The cluster block receives the connection port. The cluster block has an insertion hole for a conductive member into which the conductive member is inserted, and a motor wire insertion hole into which the motor wire is inserted. The second end of the conductive member is located inward of the stator in a radial direction of the rotary shaft. In a state where the second end of the conductive member inserted into the conductive member insertion hole is electrically connected to the connection terminal, the cluster block has a rotor opposing portion facing the first end portion of the rotor in the axial direction of the rotation shaft. and a stator opposing portion facing the first end portion of the stator in the axial direction of the rotating shaft. In the axial direction of the rotary shaft is a Distance between the stator opposing portion and the first end portion of the stator is less than a distance between the rotor opposing portion and the first end portion of the rotor.

list of figures

• 1 ist eine Querschnittsansicht, die ein Ausführungsbeispiel eines motorangetriebenen Kompressors zeigt;
• 2 ist eine vergrößerte Querschnittsansicht, die einen Teil des motorangetriebenen Kompressors von 1 zeigt.

The invention, together with objects and advantages thereof, may best be understood by reference to the following description of the presently preferred embodiments taken in conjunction with the accompanying drawings.

• 1 Fig. 10 is a cross-sectional view showing an embodiment of a motor-driven compressor;
• 2 FIG. 10 is an enlarged cross-sectional view illustrating a part of the motor-driven compressor of FIG 1 shows.

DETAILED DESCRIPTION OF THE EMBODIMENTS

An embodiment of a motor driven compressor will now be described with reference to FIG 1 and 2 described. The motor-driven compressor of the present embodiment is used in a vehicle air conditioner.

As in 1 shown has a motor driven compressor 10 a housing 11 , The housing 11 has a dispensing housing component 12 having a peripheral wall and a closed end, and a cylindrical motor housing component 13 which has a closed end and with the dispensing housing component 12 is coupled. The dispensing housing component 12 and the engine housing component 13 are formed of a metal material (for example, aluminum). The motor housing component 13 has an end wall 13e and a cylindrical side wall 13a (Peripheral wall) extending from the outer periphery of the end wall 13e extends.

The motor housing component 13 takes a rotary shaft 14 on. Furthermore, the motor housing component takes 13 a compression unit 15 passing through the rotary shaft 14 is driven to compress a refrigerant serving as a fluid, and an electric motor 20 on, the rotary shaft 14 turns to the compression unit 15 drive. The compression unit 15 and the electric motor 20 are aligned in the axial direction, which is the direction in which the rotation axis L of the rotation shaft 14 extends. The electric motor 20 is between the compression unit 15 and the end wall 13e of the motor housing component 13 located.

In the motor housing component 13 is a shaft support 16 between the compression unit 15 and the electric motor 20 located. A radially central portion of the shaft support 16 has an insertion hole 16h , A first end of the rotary shaft 14 is in the insertion hole 16h used. A warehouse 17a is between the wall of the insertion hole 16h and the first end of the rotary shaft 14 located. The first end of the rotary shaft 14 is through the warehouse 17a in the shaft support 16 supported in a rotating manner.

An annular shaft receiving portion 18 stands from the end wall 13e of the motor housing component 13 in front. A second end of the rotary shaft 14 is in the shaft receiving section 18 used. A warehouse 17b is between the shaft receiving section 18 and the second end of the rotary shaft 14 located. The second end of the rotary shaft 14 is through the warehouse 17b in the shaft receiving portion 18 supported in a rotating manner.

The compression unit 15 has a solid snail 15a attached to the motor housing component 13 is fixed, and a movable snail 15b , which are opposite to the fixed snail 15a is arranged. The solid snail 15a and the mobile snail 15b intervene. A compression chamber 15c whose volume is changeable is between the fixed screw 15a and the mobile screw 15b Are defined.

A cover 19 , which has a peripheral wall and a closed end, is connected to the end wall 13e of the motor housing component 13 coupled. The cover 19 and the end wall 13e of the motor housing component 13 define a receiving cavity 19a , the drive circuit or a drive circuit 30 picks up the electric motor 20 drives. The end wall 13e of the motor housing component 13 is a part of the case 11 and works as a partition that covers the inside of the case 11 from the receiving cavity 19a separates. The compression unit 15 , the electric motor 20 and the drive circuit 30 are in this order in the axial direction of the rotary shaft 14 aligned or arranged.

The electric motor 20 has a cylindrical stator 22 and a rotor 21 placed on the inner side of the stator 22 is located. The rotor 21 turns in one piece with the rotary shaft 14 , The stator 22 surrounds the rotor 21 , The rotor 21 has a rotor core 21a who is at the rotary shaft 14 is fixed, and permanent magnets (not shown) in the rotor core 21a are arranged. The stator 22 has a cylindrical stator core 23 and windings 24 around the stator core 23 wrapped around. Furthermore, the stator has 22 annular winding ends 24e , each from one of two end faces 23e of the stator core 23 in the axial direction of the rotary shaft 14 protrude. The winding ends 24e are parts of the windings 24 ,

In the description below, the one of the two end faces 23e closer to the drive circuit 30 or the end wall 13e is, that is the one opposite to the end wall 13e , as the first end face 23e designated. Furthermore, this will be one of the two coil ends 24e that from the first end face 23e protrudes, as the first coil end 24e designated.

One of two end sections of the rotor 21 closer to the drive circle 30 in the axial direction of the rotary shaft 14 is located, serves as a first end portion of the rotor 21 , In the present embodiment, the first end portion of the rotor 21 in particular, on the end portion of the rotor core 21a , the end wall 13e of the motor housing component 13 in the axial direction of the rotary shaft 14 opposite.

One of two end sections of the stator 22 closer to the drive circle 30 in the axial direction of the rotary shaft 14 is located, that is, the end portion which is on the same side as the first end portion of the rotor 21 located, serves as the first end portion of the stator 22 , In the present embodiment, the first end portion of the stator refers 22 in particular, on the end portion of the first coil end 24e , the end wall 13e of the motor housing component 13 in the axial direction of the rotary shaft 14 opposite.

The side wall 13a has a suction port 13h located in the inner peripheral surface of the sidewall 13a opens. A refrigerant is built into the motor housing component 13 through the suction port 13h sucked through. The suction connection 13h is between the first end surface 23e and the end wall 13e in the axial direction of the rotary shaft 14 located. The suction connection 13h is connected to an external refrigerant circuit (not shown).

A delivery chamber 12a is the dispensing housing component 12 Are defined. The dispensing housing component 12 has a discharge connection 12h that with the dispensing chamber 12a is in the connection. The delivery connection 12h is connected to the external refrigerant circuit.

The refrigerant flowing through the intake port 13h in the motor housing component 13 is sucked by the circulation of the movable screw 15b further into the compression chamber 15c sucked (suction). The refrigerant in the compression chamber 15c is due to the circulation of the movable screw 15b compressed and then into the delivery chamber 12a delivered (delivery process). The refrigerant that enters the delivery chamber 12a has been discharged, flows out of the discharge port 12h into the external refrigerant circuit and returns through the suction port 13h to the motor housing component 13 back.

Three motor wires 28 extend from the first coil end 24e , the opposite of the end wall 13e of the motor housing component 13 is arranged. The three motor wires 28 correspond to the U-phase, the V-phase and the W-phase, respectively. Every motor wire 28 is the extension of one of the windings 24 extending from the first coil end 24e extend, and covered by an insulating tube or sheath. The three motor wires 28 extend from the first coil end 24e in one direction, that of the circumferential direction of the rotary shaft 14 equivalent.

The end wall 13e of the motor housing component 13 has three through holes 13b , The through holes 13b are inward of the first coil end 24e in the radial direction of the rotary shaft 14 located. In other words, the through holes are 13b at a region corresponding to a radially inner region of the first coil end 24e located.

A hermetic connection unit 31 is at a position corresponding to the through holes 13b arranged. The hermetic connection unit 31 has three conductive components 32 corresponding to the windings 24 the U-phase, the V-phase or the W-phase. Each conductive component 32 is a rod-shaped metal terminal, which is straight in the axial direction of the rotary shaft 14 extends. Each conductive component 32 is through one of the through holes 13b inserted through it. Furthermore, every conductive component has 32 a first end, with the drive circuit 30 is electrically connected, and a second end of the receiving cavity 19a through the through holes 13b through in the motor housing component 13 protrudes.

The hermetic connection unit 31 has a support plate 33 containing the three conductive components 32 supports. Each conductive component 32 is through the support plate 33 supported in a state in which it passes through the support plate 33 inserted through it. A glass insulating member (not shown) is between each conductive member 32 and the support plate 33 arranged. The support plate 33 is in the receiving cavity 19a arranged and by screws (not shown) on the outer surface of the end wall 13e near the through holes 13b attached.

A connector 39 is in the motor housing component 13 arranged. The connector 39 connects the three motor wires 28 with the appropriate conductive components 32 , The connector 39 has three connection connections 41 and an insulating cluster block 40 formed of a resin and the connection terminals 41 receives. Of the cluster block 40 serves as a housing for the connector 39 , Each connection connection 41 is at the second end of one of the conductive components 32 electrically connected. The cluster block 40 takes the three connection connections 41 according to the windings 24 the U phase, the V phase or the W phase on. Each connection connection 41 electrically connects the corresponding motor wire 28 and the corresponding conductive component 32 ,

As in 2 is, has the cluster block 40 insertion 43 for a conductive component and engine wire insertion holes 42 , The conductive components 32 are in the insertion holes 43 used for a conductive component and the motor wires 28 are in the engine wire insertion holes 42 used.

The cluster block 40 is in the motor housing component 13 arranged so that the engine wire insertion holes 42 to the inner peripheral surface of the motor housing component 13 open and the insertion holes 43 for a conductive member extending in the axial direction of the rotary shaft 14 extend.

The second end of each conductive component 32 and every insertion hole 43 for a conductive member are inward in the radial direction of the rotary shaft 14 from the first coil end 24e located. That is the section of the cluster block 40 who has the insertion holes 43 for a conductive member is inward in the radial direction of the rotary shaft 14 from the first coil end 24e located. The section of the cluster block 40 moving inward in the radial direction from the first winding end 24e has a lead leading to the rotor core 21a in the axial direction of the rotary shaft 14 protrudes. The projection is radially inward from the first coil end 24e located. The projection has a rotor opposing portion 44 which is the first end portion of the rotor 21 (the rotor core 21a ) in the axial direction of the rotary shaft 14 is opposed in a state in which the second end of each conductive component 32 in the corresponding insertion hole 43 is used for a conductive component, with the corresponding connection connection 41 connected is. That is the cluster block 40 has the rotor opposite section 44 leading to the rotor core 21a protrudes and radially inward from the first coil end 24e is located.

In a state where the second ends of the conductive components 32 in the insertion holes 43 are used for a conductive component, with the connection terminals 41 are electrically connected, are the Motordrahteinsetzlöcher 42 located at positions with the coil end 24e from view in the axial direction of the rotary shaft 14 overlap. In other words, the engine wire insertion holes are 42 with the coil end 24e in the axial direction of the rotary shaft 14 aligned. Furthermore, the cluster block has 40 a section that ends with the coil 24e in the axial direction of the rotary shaft 14 is aligned, which has a Statorüberliehlungsabschnitt 45 defines the first end portion of the stator 22 (the first winding end 24e ) in the axial direction of the rotary shaft 14 opposite.

The largest part of the cluster block 40 (The stator opposing section 45 ) is between the first coil end 24e and the end wall 13e of the motor housing component 13 in the axial direction of the rotary shaft 14 located. Furthermore, it is part of the cluster block 40 (Rotorgegenüberliegungsabschnitt 44 ) inward from the first coil end 24e in the radial direction of the rotary shaft 14 located. In the axial direction of the rotary shaft 14 is the distance S1 between the stator opposing portion 45 and the first end portion of the stator 22 (first coil end 24e ) less than the distance S2 between the rotor opposing portion 44 and the first end portion of the rotor 21 ,

Every motor wire 28 is through the corresponding motor wire insertion hole 42 in the cluster block 40 inserted and with the appropriate connection connection 41 connected. Each conductive component 32 is through the corresponding insertion hole 43 for a conductive component in the cluster block 40 inserted and with the appropriate connection connection 41 connected. This connects the motor wires 28 by means of the connection terminals 41 in an electrical manner with the conductive components 32 , The direction in which the conductive components 32 in the insertion holes 43 are used for a conductive component, is perpendicular to the direction in which the motor wires 28 in the engine wire insertion holes 42 are used. In other words, the direction in which the insertion holes are 43 for a conductive member, perpendicular to the direction in which the motor wire insertion holes 42 extend.

The power generated by the drive circuit 30 is controlled via the conductive components 32 , the connection connections 41 and the motor wires 28 to the electric motor 20 fed. This drives the electric motor 20 and turns the rotary shaft 14 so the compression unit 15 the refrigerant is compressed.

The operation of the present embodiment will now be described.

In the present embodiment, in the axial direction of the rotary shaft 14 , the distance S1 between the stator opposing portion 45 and the first end portion of the stator 22 less than the distance S2 between the rotor opposing portion 44 and the first End portion of the rotor 21 , Thus, even if, for example, a vibration generated when the vehicle is traveling comes the cluster block 40 to the electric motor block 20 in the axial direction of the rotary shaft 14 moves, the stator opposing section 45 with the first end portion of the stator 22 in contact. This avoids contact of the cluster block 40 with the rotor 21 ,

1. (1) In der Axialrichtung der Drehwelle 14 ist der Abstand S1 zwischen dem Statorgegenüberliegungsabschnitt 45 und dem ersten Endabschnitt des Stators 22 geringer als der Abstand S2 zwischen dem Rotorgegenüberliegungsabschnitt 44 und dem ersten Endabschnitt des Rotors 21. Somit kommt, selbst falls der Clusterblock 40 zu dem Elektromotor 20 in der Axialrichtung der Drehwelle 14 bewegt wird, der Statorgegenüberliegungsabschnitt 45 des Clusterblocks 40 mit dem ersten Endabschnitt des Stators 22 in Kontakt. Dies vermeidet einen Kontakt des Clusterblocks 40 mit dem Rotor 21.
2. (2) Aus Sicht in der Axialrichtung der Drehwelle 14 sind die Motordrahteinsetzlöcher 42 an Positionen gelegen, die mit dem Wicklungsende 24e überlappen. Des Weiteren definiert der Abstand des Clusterblocks 40, wo sich die Motordrahteinsetzlöcher 42 erstrecken, den Statorgegenüberliegungsabschnitt 45, der dem ersten Endabschnitt des Stators 22 in der Axialrichtung der Drehwelle 14 gegenüberliegt. Somit gibt es keine Notwendigkeit, einen Statorgegenüberliegungsabschnitt hinzuzufügen, der dem ersten Endabschnitt des Stators 22 in der Axialrichtung der Drehwelle 14 gegenüberliegt, da ein bestehender Abschnitt des Clusterblocks 40 verwendet werden kann, um als der Statorgegenüberliegungsabschnitt 45 zu funktionieren. Dies vereinfacht den Aufbau des Clusterblocks 40.
3. (3) Die Richtung, in der die leitenden Bauteile 32 in die Einsetzlöcher 43 für ein leitendes Bauteil eingesetzt sind, ist senkrecht zu der Richtung, in der die Motordrähte 28 in die Motordrahteinsetzlöcher 42 eingesetzt sind. Dies erleichtert das Einsetzen der leitenden Bauteile 32 in die Einsetzlöcher 43 für ein leitendes Bauteil und das Einsetzen der Motordrähte 28 in die Motordrahteinsetzlöcher 42 im Vergleich zu einem Fall, wenn die Richtung, in der die leitenden Bauteile 32 in die Einsetzlöcher 43 für ein leitendes Bauteil eingesetzt sind, geneigt oder schräg relativ zu der Richtung ist, in der die Motordrähte 28 in die Motordrahteinsetzlöcher 42 eingesetzt sind. Dies gestattet auch eine leichte Festlegung des Abstands S1 zwischen dem Statorgegenüberliegungsabschnitt 45 und dem ersten Endabschnitt des Stators 22 und des Abstands S2 zwischen dem Rotorgegenüberliegungsabschnitt 44 und dem ersten Endabschnitt des Rotors 21.
4. (4) Das vorliegende Ausführungsbeispiel vermeidet einen Kontakt des Clusterblocks 40 mit dem Rotor 21. Dies vermeidet eine Situation, die ein Geräusch erzeugt, wenn der Rotor 21 mit dem Clusterblock 40, der in Kontakt mit dem Rotor 21 ist, dreht.

The present embodiment has the advantages described below.

1. (1) In the axial direction of the rotary shaft 14 is the distance S1 between the stator opposing portion 45 and the first end portion of the stator 22 less than the distance S2 between the rotor opposing portion 44 and the first end portion of the rotor 21 , Thus, even if the cluster block comes 40 to the electric motor 20 in the axial direction of the rotary shaft 14 is moved, the stator opposing portion 45 of the cluster block 40 with the first end portion of the stator 22 in contact. This avoids contact of the cluster block 40 with the rotor 21 ,
2. (2) From view in the axial direction of the rotary shaft 14 are the engine wire insertion holes 42 located at positions with the coil end 24e overlap. Furthermore, the distance of the cluster block defines 40 where the engine wire insertion holes 42 extend the stator opposing section 45 , which is the first end portion of the stator 22 in the axial direction of the rotary shaft 14 opposite. Thus, there is no need to add a stator opposing portion to the first end portion of the stator 22 in the axial direction of the rotary shaft 14 opposite, since an existing section of the cluster block 40 can be used to as the stator opposing section 45 to work. This simplifies the structure of the cluster block 40 ,
3. (3) The direction in which the conductive components 32 in the insertion holes 43 are used for a conductive component, is perpendicular to the direction in which the motor wires 28 in the engine wire insertion holes 42 are used. This facilitates the insertion of the conductive components 32 in the insertion holes 43 for a conductive component and the insertion of the motor wires 28 in the engine wire insertion holes 42 compared to a case when the direction in which the conductive components 32 in the insertion holes 43 are used for a conductive component, inclined or oblique relative to the direction in which the motor wires 28 in the engine wire insertion holes 42 are used. This also allows easy fixing of the distance S1 between the stator opposing portion 45 and the first end portion of the stator 22 and the distance S2 between the rotor opposing portion 44 and the first end portion of the rotor 21 ,
4. (4) The present embodiment avoids contact of the cluster block 40 with the rotor 21 , This avoids a situation that generates a noise when the rotor 21 with the cluster block 40 in contact with the rotor 21 is, turns.

It will be obvious to those skilled in the art that the present invention may be embodied in many other specific forms without departing from the spirit or scope of the invention. In particular, it is to be understood that the present invention may be embodied in the following forms.

In the above embodiment, the direction in which the conductive components 32 in the insertion holes 43 are used for a conductive component, inclined relative to the direction in which the motor wires 28 in the engine wire insertion holes 42 are used.

In the above embodiment, the first end portion of the stator 22 be part of an insulator that houses the stator core 23 from the windings 24 isolated. Alternatively, the first end portion of the stator 22 the end of a cover that is the coil end 24e protects.

In the above embodiment, the first end portion of the rotor 21 the end of a balance weight of the rotor 21 be. Alternatively, the first end portion of the rotor 21 the end of a rivet that fixes the balance weight.

In the above embodiment, there is no particular limitation on the number of motor wires 28 , the conductive components 32 and the connection terminals 41 ,

In the above embodiment, the end wall 13e of the motor housing component 13 a single through hole 13b have, and the support plate 33 can have three through holes. Each through hole of the support plate 33 takes one of the three conductive components 32 on. In this case, the three conductive components 32 correspondingly through the three through holes in the support plate 33 inserted through, and the three conductive components 32 are all through the single through hole 13b in the end wall 13e inserted through it.

In the above embodiment, the compression unit 15 , the electric motor 20 and the drive circuit 30 not in this order along the rotation axis L of the rotation shaft 14 be aligned. For example, the cover 19 with the sidewall 13a of the motor housing component 13 coupled, and the drive circuit 30 can be accommodated in a cavity through the cover 19 and the side wall 13a of the motor housing component 13 is defined.

In the above embodiment, the compression unit 15 not limited to the design, the fixed snail 15a and the mobile snail 15b has, and may be, for example, a piston type or a wing type.

In the above embodiment, the compression unit 15 For example, compress air as the fluid.

In the above embodiment, the motor-driven compressor 10 can not be used in a vehicle air conditioner and can be used in a different type of air conditioner.

The present examples and embodiments are to be considered as illustrative and not restrictive, and the invention is not limited to the details given herein, but may be modified within the scope and equivalence of the appended claims.

An electric motor of a motor-driven compressor has a stator and a rotor. The rotor has a rotor end and the stator has a stator end located on the same side as the rotor end. The compressor has a motor wire, a conductive component and a connector. The connector has a connection port and a cluster block. The conductive member has an end connected to the connection terminal and located inward of the stator in the radial direction. The cluster block has a rotor opposing portion and a stator opposing portion. In the axial direction, the distance between the stator opposing portion and the stator end is smaller than the distance between the rotor opposing portion and the rotor end.

Claims (3)

A motor-driven compressor comprising: a housing; a rotary shaft received in the housing; an electric motor accommodated in the housing and configured to rotate the rotary shaft; a compression unit accommodated in the housing and configured to compress a fluid as the rotary shaft rotates; and a drive circuit that drives the electric motor; wherein the electric motor has a cylindrical stator and a rotor located on an inner side of the stator, and one of two end portions of the rotor in an axial direction of the rotary shaft serves as a first end portion; the stator has a stator core and a coil end protruding from an end surface of the stator core in the axial direction of the rotary shaft, wherein one of two end portions of the stator in the axial direction of the rotary shaft located on the same side as the first end portion of the rotor a first end portion is used; wherein the motor-driven compressor further comprises: a motor wire extending from the coil end; a conductive member inserted through a through hole of the housing and having a first end electrically connected to the drive circuit; and a connector located in the housing and interconnecting the motor wire and the conductive member, the connector having a connection terminal connected to the motor wire and electrically connected to a second end of the conductive member, and an insulating cluster block, which houses the connection terminal, the cluster block having a conductive member insertion hole into which the conductive member is inserted, and a motor wire insertion hole into which the motor wire is inserted, and the second end of the conductive member inward of the stator in a radial direction Rotary shaft is located; wherein the motor-driven compressor is characterized in that, in a state where the second end of the conductive member inserted into the conductive-member insertion hole is electrically connected to the connection terminal, the cluster block has a rotor-opposed portion corresponding to the first end portion of the first embodiment Rotor in the axial direction of the rotary shaft opposite, and has a Statorüberliehlungsabschnitt, which is opposite to the first end portion of the stator in the axial direction of the rotary shaft; and in the axial direction of the rotating shaft, a distance between the stator opposing portion and the first end portion of the stator is smaller than a distance between the rotor opposing portion and the first end portion of the rotor. Motor driven compressor after Claim 1 characterized in that, in a state in which the second end of the conductive member inserted into the conductive member insertion hole is electrically connected to the connection terminal, the motor wire insertion hole is located at a position coincident with the Winding end from view in the axial direction of the rotating shaft overlaps. Motor driven compressor after Claim 1 or 2 characterized in that a direction in which the conductive member is inserted into the conductive member insertion hole is perpendicular to a direction in which the motor wire is inserted into the motor wire insertion hole.

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