KR102289268B1 - Electric compressor - Google Patents

Abstract

(Problem) To be able to improve installation workability and to improve seismic resistance.
(Solution) Each fastening bolt 71 inserted through each bolt insertion hole 70h of the metal plate 70 is screwed into each female threaded hole 33 to attach the metal plate 70 to the connector mounting surface 31 Tighten while in contact. Thereby, the connector member 40 is fastened to the connector mounting part 30 . In the resin part 60 of the connector member 40, the bus bar 50 is hold|maintained while the connector connection part 61 is integrally formed. Accordingly, as in the prior art, a separate process such as first fixing the bus bar to the connector mounting portion and then fixing the connector connecting portion to the connector mounting portion becomes unnecessary. Further, as in the prior art, the seismic resistance of each component is improved as compared to the case where each of the bus bar and the connector connecting portion is separately fixed to the connector mounting portion.

Description

Electric Compressor {ELECTRIC COMPRESSOR}

The present invention relates to an electric compressor.

A motor-driven compressor includes a drive circuit having a compression unit for compressing a fluid by rotation of a rotating shaft, an electric motor rotating the rotating shaft, and a circuit board for driving the electric motor, a rotating shaft, a compression unit, an electric motor, and a driving circuit It has a housing for accommodating it. The circuit board is accommodated in a accommodating chamber formed in the housing. And the compression part, the electric motor, and a drive circuit are arrange|positioned side by side in the axial direction of a rotating shaft so that a drive circuit may be located at one end of the axial direction of a rotating shaft. Moreover, the motor-compressor is provided with the normal connector connection part to which an external connector is connected, and the bus bar electrically connected with the other end electrically connected to the circuit board while one end is electrically connected to an external connector.

As shown in FIG. 7, for example, in the electric compressor 100 of patent document 1, the connector installation part 102 is formed in the outer peripheral surface of the housing 101. As shown in FIG. The connector connecting portion 103 is positioned outside the housing 101 in the radial direction of the rotational shaft 100a, and the opening 103a of the connector connecting portion 103 is a compression portion 104 in the axial direction of the rotational shaft 100a. ) and the electric motor 105 are fixed to the connector mounting portion 102 so as to face the opposite side. A bus bar 107 electrically connecting the circuit board 106a of the drive circuit 106 and the external connector is fixed to the connector mounting portion 102 .

Japanese Patent Laid-Open No. 2012-47139

However, in the electric compressor 100 of Patent Document 1, first, the bus bar 107 is fixed to the connector mounting portion 102 , and then the connector connecting portion 103 is fixed to the connector mounting portion 102 . Since it is necessary, mounting workability is bad. Moreover, since each of the bus bar 107 and the connector connection part 103 is separately fixed to the connector installation part 102 separately, the earthquake resistance of each component is bad.

The present invention has been made in order to solve the above problems, and an object thereof is to provide an electric compressor capable of improving mounting workability and improving seismic resistance.

A motor-driven compressor for solving the above problems includes a driving circuit having a compression unit for compressing a fluid by rotation of a rotating shaft, an electric motor rotating the rotating shaft, and a circuit board for driving the electric motor, and accommodating the circuit board a housing having an accommodation chamber comprising: a housing, a normal connector connecting portion to which an external connector is connected; and a bus bar having one end electrically connected to the external connector and the other end electrically connected to the circuit board, the compression unit; The electric motor and the driving circuit are arranged side by side in the axial direction of the rotating shaft so that the driving circuit is located at one end in the axial direction of the rotating shaft, and the connector connecting portion is located radially outward of the rotating shaft with respect to the housing and the opening of the connector connecting portion faces the opposite side to the compression unit and the electric motor in the axial direction of the rotation shaft, wherein the connector connecting portion is integrally formed and one end of the bus bar is attached to the opening A resin part for holding the bus bar in a face-to-face state, and a connector member having a metal plate integrated on an outer surface of the resin part, wherein the housing communicates with the inside and outside of the accommodation chamber and in the axial direction of the rotation shaft A through hole opening toward the compression unit and the electric motor is formed, a female threaded hole is formed around the through hole in the housing, and a bolt insertion hole through which a fastening bolt is inserted is formed in the metal plate, , the connector member includes the other end of the bus bar being inserted into the through hole, and the fastening bolt inserted through the bolt insertion hole is screwed into the female screw hole and fastened to the housing, The other end is connected to the circuit board through the through hole.

According to this, a connector member having a resin portion for holding one end of the bus bar facing the opening of the connector connecting portion is provided in the housing by simply screwing the fastening bolt inserted through the bolt insertion hole of the metal plate into the female screw hole. can be contracted And the other end of the bus bar can be connected to a circuit board through a through hole. Since the bus bar is held in the resin part of the connector member while the connector connecting part is integrally formed, as in the prior art, a separate process such as first fixing the bus bar to the housing and then fixing the connector connecting part to the housing This becomes unnecessary. Accordingly, the mounting workability is improved. In addition, since the connector connecting portion is integrally formed and the bus bar is held in the resin portion of the connector member, as in the prior art, each of the bus bar and the connector connecting portion is separately fixed to the housing. The earthquake resistance is improved. From the above, mounting workability can be improved, and seismic resistance can be improved.

In the electric compressor, the housing includes a motor housing for accommodating the compression unit and the electric motor, and an inverter case attached to the motor housing and having the accommodating chamber, wherein the through hole includes the inverter case should be formed in

According to this, since the connector member can be fastened to the housing in a state in which the inverter case in which the circuit board is accommodated in the housing chamber is removed from the motor housing, the mounting workability can be further improved.

ADVANTAGE OF THE INVENTION According to this invention, attachment workability|operativity can be improved, and seismic resistance can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS It is a side sectional view which shows the electric compressor in embodiment.
Fig. 2 is an enlarged cross-sectional view of a part of the electric compressor.
3 is a perspective view of a connector member.
4 is a front view of the connector member.
Fig. 5 is a front view showing a part of the case body.
Fig. 6 is an exploded perspective view of the connector member and the case body.
Fig. 7 is a cross-sectional view showing an electric compressor in a conventional example.

Hereinafter, one Embodiment which embodied the electric compressor is described with reference to FIGS. 1-6. The electric compressor of the present embodiment is used, for example, in a vehicle air conditioner.

As shown in FIG. 1 , the housing 11 of the electric compressor 10 includes a bottomed normal motor housing 12 , a bottomed normal discharge housing 13 , and a flat box-shaped inverter case 14 . ) has Accordingly, the housing 11 includes the motor housing 12 and the inverter case 14 . The motor housing 12 , the discharge housing 13 , and the inverter case 14 are made of a metal material, for example, made of aluminum.

The motor housing 12 has a bottom wall 12a and a peripheral wall 12b formed to extend normally from the outer peripheral edge of the bottom wall 12a. The discharge housing 13 is connected to the side opposite to the bottom wall 12a of the peripheral wall 12b of the motor housing 12 . And the discharge housing 13 has closed the opening of the motor housing 12 on the opposite side to the bottom wall 12a. The inverter case 14 is attached to the outer surface of the bottom wall 12a of the motor housing 12 by bolts, not shown.

In the motor housing 12, the rotating shaft 15, the compression unit 16 that compresses the refrigerant, which is a fluid by the rotation of the rotating shaft 15, and rotating the rotating shaft 15 to drive the compression unit 16 An electric motor 17 is accommodated. The rotating shaft 15 is rotatably supported by the motor housing 12 . The compression unit 16 is, for example, a scroll type composed of a fixed scroll (not shown) fixed in the motor housing 12 and a movable scroll (not shown) disposed opposite to the fixed scroll. In addition, the compression part 16 is not limited to a scroll type, For example, a piston type, a vane type, etc. may be sufficient.

The electric motor 17 includes a rotor 17a fixed to a rotating shaft 15 and rotating integrally with the rotating shaft 15 , and a rotor 17a while being fixed to an inner peripheral surface of a peripheral wall 12b of the motor housing 12 . ) and a stator 17b surrounding it. A coil 18 is wound around the teeth of the stator 17b. And when electric power is supplied to the coil 18, the rotor 17a and the rotating shaft 15 rotate.

A suction port 12h is formed in the peripheral wall 12b of the motor housing 12 . Moreover, the discharge port 13h is formed in the discharge housing 13. As shown in FIG. One end of the external refrigerant circuit 19 is connected to the suction port 12h. The other end of the external refrigerant circuit 19 is connected to the discharge port 13h. Then, the refrigerant is sucked into the motor housing 12 from the external refrigerant circuit 19 through the suction port 12h, and the refrigerant sucked into the motor housing 12 is compressed by the compression unit 16 . The refrigerant compressed by the compression unit 16 is discharged into the discharge housing 13 and discharged to the external refrigerant circuit 19 through the discharge port 13h through the heat exchanger or expansion valve of the external refrigerant circuit 19 , is refluxed into the motor housing 12 through the suction port 12h. The electric compressor 10 and the external refrigerant circuit 19 constitute the vehicle air conditioner 20 .

The inverter case 14 has a bottomed normal case body 21 and a bottomed normal cover 22 . The case body 21 has a bottom wall 21a and a peripheral wall 21b that is formed to extend normally from the outer peripheral edge of the bottom wall 21a. Then, the case body 21 is attached to the motor housing 12 in a state in which the outer surface of the bottom wall 21a of the case body 21 is in contact with the outer surface of the bottom wall 12a of the motor housing 12 . has been

The cover 22 has a bottom wall 22a and a peripheral wall 22b formed to extend normally from the outer peripheral edge of the bottom wall 22a. The peripheral wall 22b of the cover 22 extends along the peripheral wall 21b of the case body 21 . And the cover 22 has the edge part on the opposite side to the bottom wall 22a in the peripheral wall 22b of the cover 22, and the bottom wall 21a in the peripheral wall 21b of the case main body 21. ) and is attached to the case body 21 with the gasket 23 interposed between the ends on the opposite side. Accordingly, the opening on the side opposite to the bottom wall 21a in the peripheral wall 21b of the case body 21 is closed by the cover 22 . And the accommodation chamber 24 is partitioned by the case main body 21 and the cover 22. Therefore, the inverter case 14 has the accommodating chamber 24 .

The gasket 23 includes an end of the peripheral wall 21b of the case body 21 on the opposite side to the bottom wall 21a and a bottom wall 22a of the peripheral wall 22b of the cover 22 . The condyle is an annular shape extending along the opposite end. And the gasket 23 has the edge part on the opposite side to the bottom wall 21a in the peripheral wall 21b of the case main body 21, and the bottom wall 22a in the peripheral wall 22b of the cover 22. ) and is sealed between the ends on the opposite side. Therefore, the gasket 23 seals between the storage chamber 24 and the outside of the inverter case 14 .

In the accommodation chamber 24, the drive circuit 26 which has the circuit board 25 which drives the electric motor 17 is accommodated. Therefore, the accommodating chamber 24 accommodates the circuit board 25 . Therefore, the housing 11 has the accommodation chamber 24 which accommodates the circuit board 25. As shown in FIG. And the compression part 16, the electric motor 17, and the drive circuit 26 are arrange|positioned side by side in the axial direction of the rotating shaft 15 in this order. The drive circuit 26 is located at one end in the axial direction of the rotation shaft 15 rather than the compression unit 16 and the electric motor 17 .

A conductive member insertion hole 21c is formed in the bottom wall 21a of the case body 21 . Further, in the bottom wall 12a of the motor housing 12, a conductive member insertion hole 12c communicating with the conductive member insertion hole 21c of the case body 21 is formed. Moreover, the electrically conductive member 27 for electrically connecting the electric motor 17 and the drive circuit 26 is formed in the bottom wall 21a of the case main body 21. As shown in FIG. The conductive member 27 is supported on the inner surface of the bottom wall 21a of the case body 21 via a support plate 28 .

The conductive member 27 passes through the conductive member insertion hole 21c of the case body 21 and the conductive member insertion hole 12c of the motor housing 12 from the accommodation chamber 24 to the motor housing 12 . protruding inside. And the electrically-conductive member 27 is electrically connected with the motor wiring 17c drawn out from the electric motor 17 via the cluster block 29 arrange|positioned in the motor housing 12. As shown in FIG.

The motor-driven compressor (10) includes a connector attaching portion (30) formed in an inverter case (14), and a connector member (40) fixed to the connector attaching portion (30). Therefore, the housing 11 is provided with the connector mounting part 30 . The connector attaching portion 30 is a part of the outer peripheral portion of the case body 21 . The connector mounting part 30 has the connector mounting surface 31 which faces the compression part 16 and the electric motor 17 side in the axial direction of the rotating shaft 15. As shown in FIG.

As shown in FIG. 2 , the connector mounting surface 31 is a cover rather than a portion in contact with the outer surface of the bottom wall 12a of the motor housing 12 in the outer surface of the bottom wall 21a of the case body 21 . (22) is located nearby. The connector mounting surface 31 is a flat surface extending in the radial direction of the rotation shaft 15 . A through hole 32 is formed in the connector mounting portion 30 . Accordingly, the through hole 32 is formed in the inverter case 14 . One end of the through hole 32 communicates with the accommodation chamber 24 . The other end of the through hole 32 is opened in the connector mounting surface 31 . Therefore, the through hole 32 is opened toward the compression part 16 and the electric motor 17 in the axial direction of the rotation shaft 15 while communicating the inside and the outside of the accommodation chamber 24. A part of the circuit board 25 faces the through hole 32 .

The connector member 40 has a bus bar 50 , a resin portion 60 , and a metal plate 70 . The resin part 60 is integrally formed with a bottomed normal connector connection part 61 to which the external connector CN is connected. The connector connecting portion 61 has a bottom wall 61a and a peripheral wall 61b extending normally from the outer peripheral edge of the bottom wall 61a. In addition, the resin part 60 extends in a direction perpendicular to the axial direction of the connector connection part 61 while continuing on the opposite side to the peripheral wall 61b in the bottom wall 61a of the connector connection part 61 . It has an extension forming part 62 which is used. Moreover, the resin part 60 has the insertion part 63 inserted into the through-hole 32 of the connector installation part 30. As shown in FIG. The insertion part 63 protrudes from the outer surface 62a continuous to the connector connection part 61 in the extension formation part 62. As shown in FIG. The connector connecting portion 61 and the inserting portion 63 extend parallel to each other. The resin portion 60 having the connector connecting portion 61 , the extension forming portion 62 , and the inserting portion 63 is generally U-shaped.

An annular sealing member 64 is attached to the outer peripheral surface of the insertion part 63 . The sealing member 64 seals between the outer peripheral surface of the insertion part 63 and the inner peripheral surface of the through hole 32 . Therefore, the sealing member 64 is sealing between the accommodation chamber 24 and the outside of the inverter case 14. As shown in FIG. The sealing member 64 is, for example, a grommet.

The resin part 60 holds the three bus bars 50 . Each bus bar 50 is resin-molded by the resin part 60 . Each bus bar 50 has a first extension portion 51 extending along the connector connecting portion 61 , a second extension portion 52 extending along the extension forming portion 62 of the resin portion 60 , , formed with a third extension 53 extending along the insertion portion 63 . While the 1st extension part 51 and the 2nd extension part 52 are continuous, the 2nd extension part 52 and the 3rd extension part 53 are continuous. Therefore, each bus bar 50 is U-shaped as a whole.

A portion of the first extension portion 51 other than the end opposite to the second extension portion 52 is inside the bottom wall 61a of the connector connecting portion 61 and inside the extension forming portion 62 . is buried. And the end of the 1st extension part 51 on the opposite side to the 2nd extension part 52 protrudes from the bottom wall 61a, and is located inside the peripheral wall 61b of the connector connection part 61. As shown in FIG.

The second extension portion 52 is embedded in the extension forming portion 62 of the resin portion 60 . A portion of the third extension portion 53 other than the end opposite to the second extension portion 52 is embedded in the insertion portion 63 . And the end part of the 3rd extension part 53 on the opposite side to the 2nd extension part 52 protrudes from the end surface 63a on the opposite side to the extension forming part 62 in the insertion part 63 . The end face 63a of the insertion part 63 on the opposite side to the extension forming part 62 is a cross section located in the insertion direction of the insertion part 63 with respect to the through-hole 32. As shown in FIG.

The first extension portion 51 is one end of the bus bar 50 . Accordingly, the resin portion 60 holds the bus bar 50 in a state where one end of the bus bar 50 faces the opening 61e of the connector connecting portion 61 . That is, the bus bar 50 is surrounded by the opening 61e of the connector connecting portion 61 . The third extension 53 is the other end of the bus bar 50 . Therefore, the other end of the bus bar 50 protrudes from the end face 63a located in the insertion direction with respect to the through-hole 32 in the insertion part 63. As shown in FIG. And one end of the bus bar 50 is electrically connected to the external connector CN. The other end of the bus bar 50 is electrically connected to the circuit board 25 .

3 and 4 , the metal plate 70 is integrated with the outer surface 62a of the extension forming portion 62 . Accordingly, the metal plate 70 is integrated with the outer surface 62a of the resin part 60 . The metal plate 70 is integrated with the outer surface 62a of the resin part 60 by being resin-molded by the resin part 60 .

The metal plate 70 is in the form of a thin plate flat plate. A hole 70a through which the insertion portion 63 of the resin portion 60 passes is formed in the metal plate 70 . Moreover, the metal plate 70 has two protrusion parts 70f which are the parts which protrude from the outer surface 62a of the extension formation part 62 when the metal plate 70 is planarly viewed. The two protruding parts 70f are respectively arrange|positioned in the part located on both sides of the hole 70a in the metal plate 70 between them.

Bolt insertion holes 70h through which the fastening bolts 71 are inserted are formed in each protruding portion 70f, respectively. Therefore, the metal plate 70 is provided with two bolt insertion holes 70h through which the fastening bolts 71 are inserted. And the two bolt insertion holes 70h are respectively formed in the part located on both sides of the hole 70a in the metal plate 70 between them. Each bolt insertion hole 70h has penetrated each protrusion part 70f in the thickness direction of the metal plate 70 while being circular.

As shown in FIGS. 5 and 6 , two female threaded holes 33 are formed around the through hole 32 in the connector mounting surface 31 . Each fastening bolt 71 inserted into each bolt insertion hole 70h is screwed into each female threaded hole 33, respectively.

As shown in FIG. 6, in the connector member 40, each fastening bolt 71 inserted into each bolt insertion hole 70h while the insertion part 63 is inserted into the through hole 32 is each female thread. It is fastened to the connector mounting part 30 by being screwed to the hole 33 and fastening in the state in which the metal plate 70 contacted the connector mounting surface 31 . And as shown in FIG. 2, the other end of the bus bar 50 passes through the through-hole 32, and is connected to the part which faces the through-hole 32 in the circuit board 25. As shown in FIG. In a state in which the connector member 40 is fixed to the connector mounting portion 30 , the connector connecting portion 61 is positioned radially outward of the rotary shaft 15 with respect to the inverter case 14 and the connector connecting portion 61 ) of the opening 61e faces the opposite side to the compression part 16 and the electric motor 17 in the axial direction of the rotating shaft 15 .

Next, the effect|action of this embodiment is demonstrated.

Since the connector connecting portion 61 is integrally formed and the bus bar 50 is held in the resin portion 60 of the connector member 40, for example, the bus bar 50 and the connector connecting portion 61 respectively. Compared with the case where this is separately fixed to the connector mounting part 30, the seismic resistance of each component improves.

In the said embodiment, the following effects can be acquired.

(1) Only by screwing each fastening bolt 71 inserted into each bolt insertion hole 70h of the metal plate 70 to each female screw hole 33, one end of the bus bar 50 is connected to the connector connection part A connector member (40) having a resin portion (60) held in a state facing the opening portion (61e) of (61) can be fastened to the connector mounting portion (30). Then, the other end of the bus bar 50 can be connected to the circuit board 25 through the through hole 32 . Since the connector connecting part 61 is integrally formed and the bus bar 50 is held in the resin part 60 of the connector member 40, as in the prior art, first, the bus bar 50 is attached to the connector mounting part. A separate process such as fixing to (30) and fixing the connector connecting portion (61) to the connector attaching portion (30) becomes unnecessary after that. Accordingly, the mounting workability is improved. Further, since the connector connecting portion 61 is integrally formed and the bus bar 50 is held in the resin portion 60 of the connector member 40, as in the prior art, the bus bar 50 and the connector connecting portion ( 61) Compared with the case where each is separately fixed to the connector mounting part 30, the earthquake resistance of each component is improved. From the above, mounting workability can be improved, and seismic resistance can be improved.

(2) The through hole 32 is formed in the inverter case 14 . According to this, the connector member 40 can be fixed to the connector mounting part 30 in a state in which the inverter case 14 in which the circuit board 25 is accommodated in the accommodation chamber 24 is removed from the motor housing 12 . Therefore, the mounting workability can be further improved.

(3) The electric compressor 10 is provided with the inverter case 14 which has the accommodation chamber 24 which accommodates the circuit board 25. As shown in FIG. The inverter case 14 is attached to the bottom wall 12a of the motor housing 12 . According to this, for example, when replacing the circuit board 25 , the inverter case 14 is removed from the motor housing 12 , and then accommodated in the storage chamber 24 of the inverter case 14 . Since the existing circuit board 25 can be replaced, the replacement workability of the circuit board 25 can be improved.

(4) The connector connecting portion 61 is positioned radially outward of the rotary shaft 15 with respect to the inverter case 14, and the opening 61e of the connector connecting portion 61 is positioned in the axial direction of the rotary shaft 15 It is facing the opposite side to the compression part 16 and the electric motor 17. As shown in FIG. Therefore, the opening 61e of the connector connecting portion 61 is the connector connecting portion facing the opposite side to the compression portion 16 and the electric motor 17 in the axial direction of the rotating shaft 15, for example, the inverter case 14 Compared with the case of projecting from the bottom wall 22a of the cover 22 of the motor-driven compressor 10, the size of the axial direction of the rotation shaft 15 of the motor-driven compressor 10 can be reduced.

In addition, the said embodiment can be changed and implemented as follows. The above-described embodiment and the following modifications can be implemented in combination with each other within a range that is not technically contradictory.

○ In the embodiment, the motor-driven compressor 10 may have a configuration that does not include the inverter case 14, for example, a cover is attached to the outer surface of the bottom wall 12a of the motor housing 12, The structure in which the accommodating chamber 24 in which the circuit board 25 is accommodated is partitioned by the outer surface of the bottom wall 12a of the motor housing 12, and a cover may be sufficient. In this case, a part of the outer peripheral portion of the bottom wall 12a of the motor housing 12 protrudes from the outer peripheral surface of the peripheral wall 12b of the motor housing 12, and the peripheral wall ( The part protruding from 12b) becomes the connector installation part. And while communicating the inside and outside of the accommodation chamber 24 in the connector installation part, the through-hole 32 which opens toward the compression part 16 and the electric motor 17 in the axial direction of the rotating shaft 15 is is formed

○ In the embodiment, the bus bar 50 may not have a U-shape as a whole, for example, may have an L-shape as a whole. In this case, as for the bus bar 50, for example, one end of the bus bar 50 extends in the radial direction of the rotation shaft 15 , and one end of the bus bar 50 is an opening of the connector connecting portion 61 . What is necessary is just to be hold|maintained by the resin part 60 in the state facing (61e).

○ In embodiment, the number of bolt insertion holes 70h formed in the metal plate 70 is not specifically limited, For example, one may be sufficient as it, and three or more may be sufficient as it. In addition, you may change the number of the female threaded holes 33 formed in the connector installation surface 31 suitably according to the number of the bolt insertion holes 70h.

○ In embodiment, the position of the bolt insertion hole 70h formed in the metal plate 70 is not specifically limited.

○ In the embodiment, each bolt insertion hole 70h may have a rectangular shape, for example, and if each fastening bolt 71 has a shape that can be inserted therethrough, the shape of each bolt insertion hole 70h is particularly It is not limited.

○ In embodiment, the number of bus bars 50 is not specifically limited.

○ In the embodiment, the electric compressor 10 is arranged in the axial direction of the rotary shaft 15 in the order of the electric motor 17 , the compression unit 16 , and the drive circuit 26 , and the electric motor 17 . , the compression unit 16 , and the driving circuit 26 may each be arranged.

○ In the embodiment, the motor-driven compressor 10 constitutes the vehicle air conditioner 20 , but the present invention is not limited thereto. For example, the motor-driven compressor 10 is mounted on a fuel cell vehicle, and a fuel cell The air as the fluid supplied to the air conditioner may be compressed by the compression unit 16 .

10: electric compressor
11: housing
12: motor housing
14: Inverter case
15: rotation shaft
16: compression unit
17: electric motor
24 : reception room
25: circuit board
26: drive circuit
32: through hole
33: female thread
40: connector member
50 : bus bar
60: resin part
61: connector connection part
61e: opening
62a: exterior
70: metal plate
70h: bolt insertion hole
71: fastening bolt
CN: external connector

Claims (7)

A compression unit for compressing the fluid by rotation of the rotating shaft;
an electric motor for rotating the rotating shaft;
a driving circuit having a circuit board for driving the electric motor;
a housing having an accommodating chamber for accommodating the circuit board;
A normal connector connecting portion to which an external connector is connected;
a bus bar having one end electrically connected to the external connector and the other end electrically connected to the circuit board;
The compression part, the electric motor, and the drive circuit are arranged side by side in the axial direction of the rotation shaft, the connector connection part is located radially outward of the rotation shaft with respect to the housing, and the opening of the connector connection part is provided with respect to the housing. An electric compressor facing the opposite side to the compression unit and the electric motor in the axial direction of the rotating shaft,
a resin part for holding the bus bar in a state in which the connector connecting part is integrally formed and the bus bar is surrounded by the opening;
and a connector member having a metal plate integrated with the outer surface of the resin part;
A through hole is formed in the housing to communicate with the inside and outside of the accommodation chamber and open toward the compression unit and the electric motor in the axial direction of the rotation shaft;
A female screw hole is formed around the through hole in the housing,
A bolt insertion hole through which a fastening bolt is inserted is formed in the metal plate,
In the connector member, the other end of the bus bar is inserted into the through hole, and the fastening bolt inserted through the bolt insertion hole is screwed to the female screw hole and fastened to the housing, and the other end of the bus bar is inserted into the through hole. An end portion passes through the through hole and is connected to the circuit board. The method of claim 1,
The housing is
a motor housing accommodating the compression unit and the electric motor;
and an inverter case attached to the motor housing and having the accommodating chamber,
The through-hole is formed in the inverter case. 3. The method according to claim 1 or 2,
The resin part has an insertion part inserted into the through hole,
Inside the insertion part, the bus bar is embedded,
The metal plate has a hole through which the insertion part passes. 4. The method of claim 3,
the resin part has an extension forming part extending in a direction orthogonal to the axial direction of the connector connection part;
The insertion part protrudes from the outer surface of the extension forming part,
The bus bar is embedded in the extension forming part,
wherein the metal plate is integrated with the outer surface of the extension forming part. 5. The method of claim 4,
The connector connecting portion is located on the outer side in the radial direction of the rotation shaft with respect to the metal plate. 4. The method of claim 3,
The electric compressor according to claim 1, wherein the bolt insertion holes are respectively formed in portions located on both sides of the metal plate with the hole therebetween. The method of claim 1,
The housing has a connector mounting surface on which the connector member is installed;
The connector member is fastened to the housing while the metal plate is in contact with the connector installation surface;
The electric compressor according to claim 1, wherein the resin part is integrated on a surface opposite to the connector mounting surface among both surfaces of the metal plate in the thickness direction.

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