KR102229043B1 - Electric compressor - Google Patents

Abstract

(Problem) To provide an electric compressor capable of improving the insulation between a connection terminal and a housing.
(Solution means) The electric compressor accommodates a connection terminal 50 for electrically connecting the motor wiring 27 drawn out from the electric motor and a conductive member electrically connected to the motor drive circuit, and a connection terminal 50 therein. And a housing forming a motor accommodation chamber for accommodating the insulative cluster block 60 and the electric motor and the cluster block 60. The cluster block 60 covers the terminal accommodation chamber S5 for accommodating the connection terminal 50, the motor wiring insertion hole 82 through which the motor wiring 27 is inserted, and the motor wiring 27 Together, an insulating tube member 30 is provided that is inserted into and fitted into the motor wiring insertion hole 82. The terminal accommodation chamber S5 is in communication with the motor accommodation chamber through the gap R between the inner peripheral surface 30a of the tube member 30 and the motor wiring 27.

Description

Electric compressor {ELECTRIC COMPRESSOR}

The present invention relates to an electric compressor.

The electric compressor disclosed in Patent Document 1 includes a compression unit for compressing a refrigerant, an electric motor for driving the compression unit, a motor driving circuit for driving the electric motor, a conductive member electrically connected to the motor driving circuit, and an electric motor. It has the motor wiring which was drawn out. In addition, the electric compressor includes a connection terminal for electrically connecting the motor wiring and the conductive member, an insulating cluster block receiving the connection terminal therein, and a housing forming a motor accommodation chamber for accommodating the electric motor and the cluster block. do. The cluster block has a terminal accommodating chamber for accommodating a connection terminal, and a motor wiring insertion hole through which the motor wiring is inserted. The cluster block has a case member having a terminal accommodating hole for accommodating a connection terminal, and a cover member for forming a terminal accommodating chamber while closing the opening of the terminal accommodating hole. In Patent Document 1, the motor wiring insertion hole is a through hole penetrating the lid member.

Japanese Unexamined Patent Publication No. 2013-148037

By the way, the refrigerant flowing in the motor accommodation chamber contains lubricating oil for improving the lubrication of the sliding portion (for example, the compression portion) in the electric compressor. The refrigerant containing lubricating oil may infiltrate into the terminal accommodation chamber through a gap between the motor wiring insertion hole and the motor wiring. The lubricating oil may be a conductor that conducts the connection terminal and the housing. Therefore, there is a fear that insulation between the connection terminal and the housing cannot be secured.

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 insulation between a connection terminal and a housing.

An electric compressor for solving the above problem includes a compression unit for compressing a refrigerant, an electric motor driving the compression unit, a motor driving circuit driving the electric motor, a conductive member electrically connected to the motor driving circuit, and , A motor wiring drawn from the electric motor, a connection terminal electrically connecting the motor wiring and the conductive member, an insulating cluster block receiving the connection terminal therein, and the electric motor and the cluster block. An electric compressor having a housing that forms a motor accommodating chamber, wherein the cluster block has a terminal accommodating chamber accommodating the connection terminal and a motor wiring insertion hole through which the motor wiring is inserted, and the motor wiring is And an insulating tube member inserted and fitted into the motor wiring insertion hole while being covered, and the terminal accommodation chamber communicates with the motor accommodation chamber through a gap between the inner side of the tube member and the motor wiring, and the cluster block Silver, a case member having a terminal receiving hole for accommodating the connection terminal, and a cover member for partitioning the terminal accommodating chamber while being fitted with the terminal accommodating hole, and the motor wiring insertion hole comprises the terminal The summary is to be constituted by the inner circumferential surface of the receiving hole and the outer circumferential surface of the cover member.

As in the prior art, in the configuration in which the tube member is not formed, the refrigerant flowing through the motor accommodation chamber penetrates into the terminal accommodation chamber through a gap between the motor wiring insertion hole and the motor wiring. On the other hand, in the configuration in which the tube member is formed, the refrigerant flowing through the motor accommodation chamber penetrates into the terminal accommodation chamber through a gap between the inside of the tube member and the motor wiring. By forming the tube member, the insulating distance between the connection terminal and the housing becomes longer as compared to the case where the tube member is not formed. Therefore, it is possible to increase the insulation between the connection terminal and the housing.

In addition, when a refrigerant containing lubricating oil enters the terminal accommodation chamber, the lubricating oil becomes a conductor that conducts the connection terminal and the housing, and there is a fear that insulation between the connection terminal and the housing cannot be secured. On the other hand, since a part of the terminal accommodating hole is partitioned as the terminal accommodating chamber by the lid member, it becomes difficult for the refrigerant containing lubricating oil to enter the terminal accommodating chamber. Thus, insulation between the connection terminal and the housing is ensured. From the above points, the insulation between the connection terminal and the housing can be improved.

Further, with respect to the electric compressor, the inner peripheral surface of the terminal receiving hole on the opening side has a groove having a shape along the outer peripheral surface of the tube member, and the motor wiring insertion hole is formed by the groove and the outer peripheral surface of the cover member. It is desirable to be configured.

According to this, since the groove is along the outer circumferential surface of the tube member, the gap between the inside of the motor wiring insertion hole and the outer circumferential surface of the tube member is small. For this reason, it becomes difficult for the refrigerant to enter the terminal accommodation chamber through the gap between the inside of the motor wiring insertion hole and the outer peripheral surface of the tube member. Accordingly, the insulation between the connection terminal and the housing can be further improved.

In addition, with respect to the electric compressor, the tube member is deformed so as to contact the bottom surface of the groove while at least part of it is pressed by the outer circumferential surface of the cover member and accommodates the terminal It is preferable to be accommodated inside the thread.

In general, it is known that the resistance of a conductor is inversely proportional to the cross-sectional area of the conductor. For this reason, the smaller the cross-sectional area of the conductor, the greater the resistance of the conductor. The tube member is deformed so as to contact the bottom surface of the groove while at least part of it is pressed by the outer circumferential surface of the lid member, and abut also the inner circumferential surface of the terminal accommodation chamber. For this reason, in the step difference between the inner circumferential surface of the terminal accommodation chamber and the groove, since the cross-sectional area of the gap between the inside of the tube member and the motor wiring becomes small, the resistance of the refrigerant containing lubricating oil flowing through the gap between the inside of the tube member and the motor wiring decreases. It gets bigger. Accordingly, the insulation between the connection terminal and the housing can be further improved.

Further, with respect to the electric compressor, it is preferable that the tube member is deformed so as to be crushed in a portion inserted and fitted into the motor wiring insertion hole.

According to this, the tube member can be easily crushed so as to reduce the cross-sectional area of the gap between the inside of the tube member and the motor wiring by simply changing the shape and diameter of the motor wiring insertion hole, which is an essential configuration.

In addition, in the electric compressor, it is preferable to provide a resin filled between the inner peripheral surface of the opening of the terminal accommodating hole and the outer peripheral surface of the tube member.

According to this, since the sealing property of the terminal accommodating chamber is increased by the resin, the insulation resistance is increased.

In addition, with respect to the electric compressor, the inner circumferential surface of the opening of the terminal receiving hole has an arc-shaped curved surface when viewed from the front of the opening, and the arc drawn by the curved surface is directed from one end to the other end. It is preferable that the distance between the curved surface and the tube member is always equal or shortened.

The filling of the resin is performed by the application nozzle, but depending on the shape of the opening and the arrangement of the tube member, there is a space in which the application nozzle cannot be positioned between the inner circumferential surface of the case member and the outer circumferential surface of the tube member. It may occur. The space where the nozzle cannot be arranged is, for example, a space between a surface in the vicinity of the tube member as an inner circumferential surface of the opening and the outer circumferential surface of the tube member. The filling of the resin into the space where the nozzle cannot be arranged is applied by applying a resin to the vicinity of the space where the nozzle cannot be arranged by the application nozzle, and the applied resin flows into the space where the nozzle cannot be arranged.

At this time, as the inner peripheral surface of the opening, the surface in the vicinity of the tube member is an arc-shaped curved surface when viewed from the front of the opening, and the arc drawn by the curved surface goes from one end to the other, so that the distance between the curved surface and the tube member is , It is always formed to be equal or shorter. According to this, it is easy for the resin to come into contact with the outer circumferential surface or curved surface of the tube member, and the resin preferably flows into the space where the nozzle cannot be arranged due to the capillary phenomenon acting on the resin. Alternatively, at least the capillary phenomenon acting on the resin does not act in a direction opposite to the flow direction of the resin, and thus stopping the flow of the resin is suppressed. Therefore, it becomes easy to fill the entire space where the nozzle cannot be disposed with the resin.

ADVANTAGE OF THE INVENTION According to this invention, the insulation property of a connection terminal and a housing can be improved.

1 is a side cross-sectional view of an electric compressor according to a first embodiment.
2 is an exploded perspective view of the connector.
3 is a cross-sectional view of the connector.
4 is a cross-sectional view of the connector.
5 is a cross-sectional view of the connector.
6 is a perspective view of a connector.
7 is a side view of the connector at the time of resin filling.
8 is a front view of the connector according to the second embodiment.
9 is a front view showing the relationship between the distance between the side wall of the case member and the tube member in the second embodiment.
10 is a front view showing a relationship between a distance between a side wall of a case member and a tube member in a comparative example.
11 is a front view showing another example of the relationship between the distance between the side wall of the case member and the tube member.

(First embodiment)

Hereinafter, a first embodiment in which an electric compressor is embodied will be described with reference to FIGS. 1 to 7.

As shown in FIG. 1, the housing 11 of the electric compressor 10 has a bottomed motor housing 12 having an opening 12a formed at one end (left end of FIG. 1 ), It has a discharge housing 13 in a normal shape with a bottom connected to one end of the motor housing 12. On the bottom wall 121 of the motor housing 12, an ordinary inverter cover 14 with a bottom is attached. A discharge chamber S1 is partitioned between the motor housing 12 and the discharge housing 13. A discharge port 15 is formed on the bottom wall of the discharge housing 13, and an external refrigerant circuit (not shown) is connected to the discharge port 15. A suction port (not shown) is formed on the peripheral wall 122 of the motor housing 12, and an external refrigerant circuit is connected to the suction port.

In the motor housing 12, a rotating shaft 16, a compression unit 17 for compressing a refrigerant, and an electric motor 18 for driving the compression unit 17 are accommodated. Accordingly, the motor housing 12 forms a motor accommodation chamber S3 that houses the electric motor 18. The electric motor 18 drives the rotation shaft 16. The compression unit 17 is driven by rotating the rotation shaft 16. The electric motor 18 is disposed closer to the bottom wall 121 (right side in FIG. 1) of the motor housing 12 than the compression unit 17.

In the motor accommodation chamber S3, the shaft support member 19 is formed between the compression part 17 and the electric motor 18. In the central portion of the shaft support member 19, an insertion hole 19a through which one end of the rotation shaft 16 is inserted is formed. A radial bearing 16a is formed between the insertion hole 19a and one end of the rotation shaft 16. One end of the rotating shaft 16 is rotatably supported by the shaft support member 19 via a radial bearing 16a.

In the bottom wall 121 of the motor housing 12, a bearing portion 121a is formed concave. The other end of the rotating shaft 16 is inserted inside the bearing portion 121a. A radial bearing 16b is formed between the bearing portion 121a and the other end of the rotating shaft 16. The other end of the rotating shaft 16 is rotatably supported by a bearing part 121a via a radial bearing 16b.

Further, the accommodation space S2 is partitioned by the bottom wall 121 of the motor housing 12 and the inverter cover 14. In the accommodation space S2, a motor drive circuit 20 (indicated by a double-dashed line in Fig. 1) is attached to the outer surface of the bottom wall 121 on the inverter cover 14 side. Therefore, in this embodiment, the compression part 17, the electric motor 18, and the motor drive circuit 20 are lined up along the extending direction (axial direction) of the axis line L of the rotating shaft 16 in this order. It is placed.

The compression unit 17 includes a fixed scroll 17a fixed in the motor accommodating chamber S3 and a movable scroll 17b disposed opposite to the fixed scroll 17a. Between the fixed scroll 17a and the movable scroll 17b, a compression chamber S4 capable of changing the volume is formed. The refrigerant compressed by changing the volume of the compression chamber S4 is discharged to the discharge chamber S1. Among the refrigerants flowing through the motor accommodating chamber S3, the compression chamber S4, and the discharge chamber S1, lubrication of the sliding portion in the electric compressor 10 (in this embodiment, for example, the fixed scroll 17a and Lubricating oil for improving the lubrication of the movable scroll 17b) is contained.

The electric motor 18 includes a rotor 21 (rotor) that rotates integrally with the rotation shaft 16, and a stator 22 (stator) fixed to the inner circumferential surface of the motor housing 12 so as to surround the rotor 21 ).

The rotor 21 has a rotor core 23 forming a cylindrical shape, and the rotor core 23 is fixedly attached to the rotation shaft 16. While a plurality of permanent magnets 24 are embedded in the rotor core 23, each permanent magnet 24 is formed at an equal pitch in the circumferential direction of the rotor core 23. The stator 22 has an annular stator core 25 fixed to the inner peripheral surface of the motor housing 12 and a U-phase, V-phase, and W-phase coil 26 formed on the stator core 25.

The first coil end 261 of each phase protrudes from the one end surface 251 of the stator core 25. The second coil ends 262 of each phase protrude from the other end surface 252 of the stator core 25. The first coil end 261 is located on the compression part 17 side (an axial end side of the rotation shaft 16), and the second coil end 262 is on the motor drive circuit 20 side (rotation shaft (16) is located at the other end in the axial direction).

From the first coil end 261 of each phase, the motor wiring 27 and the phase wire 28 are drawn out by two. The U-phase, V-phase, and W-phase coils 26 have a double wire structure formed by winding two conducting wires in order to reduce voltage. In addition, in FIG. 1, only two motor wirings 27 on a U and two phase lines 28 on a U are shown, for example. Each motor wiring 27 and each phase wire 28 are drawn out from the first coil end 261 in a state in which the conductor wire of the coil 26 drawn out from the first coil end 261 is covered with an insulating film. .

As shown in FIG. 2, each of the phase wires 28 corresponding to the U-phase, V-phase, and W-phase coils 26 are bundled as a bundle of phase wires 29. At the distal ends of each commercial ship 28, the conductive wire from which the insulating coating has been removed is exposed. The merchant ship bundle 29 has a merchant ship connecting portion 29a (neutral point) in which the tip ends of each of the merchant ships 28 are electrically connected to each other.

1, a through hole 121b is formed in the bottom wall 121 of the motor housing 12. An airtight terminal 31 is disposed in the through hole 121b. The hermetic terminal 31 has three conductive members 32 (only one is shown in Fig. 1) corresponding to the U-phase, V-phase, and W-phase coils 26. Each conductive member 32 is a cylindrical metal terminal extending linearly. Each conductive member 32 is inserted into the through hole 121b and has one end electrically connected to the motor drive circuit 20 via a cable 20a. The other end of each conductive member 32 protrudes into the motor accommodation chamber S3 through the through hole 121b from the accommodation space S2. Further, the hermetic terminal 31 has three insulating members 33 made of glass (only one is shown in FIG. 1) for fixing each conductive member 32 to the bottom wall 121 while insulating it.

The connector 40 is accommodated in the motor accommodation chamber S3. The connector 40 connects the motor wiring 27 and the conductive member 32. The connector 40 is disposed on the outer peripheral side of the stator core 25 and the second coil end 262 in the radial direction of the rotation shaft 16.

As shown in Fig. 2, the connector 40 is an insulating cluster accommodating three connection terminals 50 and three connection terminals 50 corresponding to the U-phase, V-phase, and W-phase coils 26 It has a block 60.

Each connection terminal 50 has a first connection part 51 electrically connected to the motor wiring 27 at one end side in the longitudinal direction, and a second connection part 52 electrically connected to the conductive member 32 Has on the other end side in the longitudinal direction. The first connecting portion 51 extends in a straight line. The first connecting portion 51 is connected to the front end of the motor wiring 27. In the two motor wirings 27 of each phase, the portion on the side of the first connecting portion 51 is inserted through the cylindrical insulating tube member 30 and covered by the tube member 30. Further, at the distal end of each motor wiring 27, the conducting wires not covered by the tube member 30 and from which the insulating film has been removed are exposed. As shown in FIG. 3, the inner diameter of the tube member 30 is larger than the diameter for two of the motor wirings 27. Therefore, a gap R is formed between the inner peripheral surface 30a of the tube member 30 and the motor wiring 27. In addition, FIG. 3 is a cross-sectional view taken along line 3-3 in FIGS. 4 and 5 to be described later.

Each connection terminal 50 has an end portion of the tube member 30 on the first connection portion 51 side and a crimping portion 53 for crimping the two motor wirings 27. The crimping portion 53 is formed to extend from one end of the first connecting portion 51 on the tube member 30 side to surround the tube member 30. The motor wiring 27 is mechanically connected to each connection terminal 50 by being crimped by the crimping portion 53 in a state inserted through the tube member 30. The 2nd connection part 52 is a substantially rectangular shape continuing to the other end of the 1st connection part 51. The other end of the conductive member 32 is inserted inside the second connecting portion 52. The direction of the axial center of the second connecting portion 52 coincides with the longitudinal direction of the first connecting portion 51. Therefore, the insertion direction of the conductive member 32 with respect to the second connection portion 52 of the connection terminal 50 coincides with the longitudinal direction of the first connection portion 51.

2 and 3, the cluster block 60 includes a case member 61 and a lid member 71 provided on the case member 61.

As shown in FIG. 2, the case member 61 is in the shape of a flat square box formed by the bottom wall 62 and the side wall 63 formed upright from the edge of the bottom wall 62. The case member 61 has a terminal accommodating hole 64. As shown in FIG. 3, in the terminal accommodating hole 64, each connection terminal 50, a part of the first connection part 51 side in each tube member 30, and two motor wirings ( A part of the 1st connection part 51 side in 27) is accommodated. The terminal accommodating hole 64 has three insertion holes 64a, three insertion holes 64a, and an opening 64b connected to each other. The opening 64b is opened on the side opposite to the bottom wall 62 side of the side wall 63. Each insertion hole 64a is partitioned from another insertion hole 64a by a partition wall 65 formed in the case member 61. Each insertion hole 64a is in the shape of an elongated hole whose axial center extends along the direction in which the side wall 63 from the bottom wall 62 is erected and formed. The direction of the axial center of each insertion hole 64a coincides with the longitudinal direction of the first connection portion 51 of the connection terminal 50.

As shown in Figs. 2 and 4, the three insertion holes 64a are arranged in a direction in which the long side of the case member 61 extends from the front view of the case member 61 viewed from the opening 64b side. Has been. Accordingly, the second connection portions 52 of each connection terminal 50 accommodated in the terminal accommodating hole 64 also line up in the direction in which the long side of the case member 61 extends. When viewed from the front of the case member 61, each insertion hole 64a has a substantially rectangular shape. The longitudinal direction of each insertion hole 64a coincides with the longitudinal direction of each second connecting portion 52, and the width direction of each insertion hole 64a coincides with the width direction of each second connecting portion 52. In addition, the longitudinal direction of each insertion hole 64a is inclined with respect to the long side of the case member 61.

As shown in FIG. 3, in the bottom wall 62 of the case member 61, the through hole 62a of the circular hole shape which communicates with each insertion hole 64a is formed. Each through-hole 62a is located inside each of the second connecting portions 52 when viewed from the axial direction of each through-hole 62a. In addition, as shown in FIGS. 2 and 3, three cylindrical guide portions 62b are formed to protrude on the outer surface of the bottom wall 62 of the case member 61. The inside of each guide part 62b communicates with each through hole 62a. The axial center of each guide part 62b and the axial center of each through hole 62a coincide. And the other end of each conductive member 32 is inserted into the inside of each guide part 62b, and the inside of the 2nd connection part 52 of each connection terminal 50 through each through hole 62a, and is fitted. . Thereby, each conductive member 32 and each connection terminal 50 are electrically connected. Therefore, the inside of each guide part 62b and each through hole 62a constitute a conductive member insertion hole 66 through which each conductive member 32 is inserted. Therefore, the case member 61 has the conductive member insertion hole 66.

As shown in FIG. 4, the case member 61 has a cylindrical merchant ship accommodation chamber 67 with a floor inside. In the merchant ship accommodation chamber 67, the merchant ship connection part 29a of the merchant ship bundle 29 is accommodated. The merchant ship accommodation chamber 67 is in the shape of an elongated hole whose axial center extends along the direction in which the side wall 63 from the bottom wall 62 is erected and formed. The axial direction of the merchant ship accommodation chamber 67 coincides with the axial direction of the insertion hole 64a. The merchant ship accommodation chamber 67 is partitioned from each insertion hole 64a by a partition wall 65. The merchant ship accommodation chamber 67 is a portion located in one longitudinal direction of the inner peripheral surface of the insertion hole 64a located at the center of the three insertion holes 64a arranged in a row, and located at one end side. Each of the portions positioned in one side of the width direction on the inner peripheral surface of the insertion hole 64a is adjacent to each other through the partition wall 65. The merchant ship accommodation chamber 67 is connected with the opening part 64b of the terminal accommodation hole 64.

2, 3, and 5, the case member 61 has a groove 68 in the inner peripheral surface of each insertion hole 64a. Each groove 68 is located on the side of the opening 64b in each insertion hole 64a. Each groove 68 is connected to the opening 64b. Each groove 68 is formed in a portion located in one of the longitudinal direction on the inner circumferential surface of the insertion hole 64a. Each groove 68 has a shape along the outer circumferential surface 30c of the tube member 30, and each groove 68 of this embodiment is an arc shape. A step is formed by the inner peripheral surface of each insertion hole 64a and each groove 68.

As shown in FIG. 3, each connection terminal 50 is inserted through the opening 64b so that the second connection part 52 is located on the side of the conductive member insertion hole 66 rather than the first connection part 51. Each is accommodated in (64a). Moreover, the merchant ship bundle 29 is accommodated in the merchant ship accommodation chamber 67 via the opening part 64b so that the merchant ship connection part 29a may be located on the conductive member insertion hole 66 side.

As shown in FIG. 2, the outer surface of one side wall 63 of the four side walls of the case member 61 is a curved surface 63b that is curved in a concave shape toward the inside of the case member 61. The curved surface 63b is a surface extending along the outer peripheral surface of the stator core 25. The connector 40 of this embodiment is disposed in the motor accommodation chamber S3 so that the curved surface 63b follows the outer circumferential surface of the stator core 25.

The lid member 71 has a plate-shaped lid portion 72. The outer circumferential surface 72a of the lid part 72 extends along the inner circumferential surface of the side wall 63 forming the opening 64b. As shown in FIG. 3, the lid member 71 is fitted with the lid part 72 in the opening 64b which is a part of the terminal accommodation hole 64 of the case member 61, so that the terminal accommodation chamber S5 To form a compartment. Accordingly, the lid member 71 partitions the terminal accommodation chamber S5 while fitting with respect to the terminal accommodation hole 64. The outer circumferential surface 72a of the lid part 72 faces the inner circumferential surface of the side wall 63 forming the opening 64b. In addition, the first end surface 72b facing each insertion hole 64a of the terminal accommodating hole 64 in the cover portion 72 is the end surface at the side of the opening 64b in the partition wall 65 ( 65a). The thickness of the lid part 72 is shorter than the distance between the end surface 65a on the side of the opening 64b in the partition wall 65 and the end surface 63c on the side of the opening 64b in the side wall 63. Therefore, the second end surface 72c on the side opposite to each insertion hole 64a of the terminal accommodating hole 64 in the cover portion 72 is at the side of the insertion hole 64a than the end surface 63c of the side wall 63 It is located in. As shown in FIG. 2, the lid part 72 has three motor wiring insertion passage grooves 73 concavely formed in the outer peripheral surface 72a of the lid part 72, and a merchant ship bundle insertion recess 74 have. The bottom surface of each motor wiring insertion passage groove 73 is in the shape of an arc.

As shown in Fig. 3, each of the motor wiring insertion grooves 73 and 68 is an annular motor wiring insertion passage through which the tube member 30 through which the two motor wirings 27 are inserted is inserted. It constitutes a ball 82. The motor wiring insertion hole 82 is constituted by an inner peripheral surface of the terminal accommodating hole 64 and an outer peripheral surface of the lid member 71. The motor wiring insertion hole 82 is constituted by a groove 68 and an outer peripheral surface of the lid member 71. As shown in FIG. 5, the motor wiring insertion hole 82 is located near the curved surface 63b in the width direction of the case member 61 when viewed from the front of the case member 61. The motor wiring insertion hole 82 of the present embodiment has an oval shape. The tube member 30 penetrates through the motor wiring insertion hole 82. The end of the tube member 30 on the first connection part 51 side is located in the terminal accommodation chamber S5, and the opposite end of the tube member 30 is located in the motor accommodation chamber S3.

The diameter of the motor wiring insertion hole 82 is smaller than the outer diameter of the tube member 30. In this embodiment, the long axis of the motor wiring insertion hole 82 is the same as the outer diameter of the tube member 30, and the short axis of the motor wiring insertion hole 82 is shorter than the outer diameter of the tube member 30. Accordingly, the tube member 30 has a crushed portion 30b in a portion inserted and fitted into the motor wiring insertion hole 82. The crushed portion 30b is formed by being pressed and crushed by the motor wiring insertion passage groove 73 and the groove 68. The tube member 30 is deformed so that it abuts against the bottom surface of the groove 68 while being pressed against the motor wiring insertion groove 73 and abuts against the inner peripheral surface of the opening 64b. The center of the crushed portion 30b of the tube member 30 is offset with respect to the center of the portion crimped by the crimping portion 53 of the tube member 30. Also in the crushed portion 30b, a gap R is formed between the inner circumferential surface 30a of the tube member 30 and the two motor wirings 27. Of the tube member 30 in the periphery of the crushed portion 30b and the crushed portion 30b (including a portion in contact with the step formed by the inner circumferential surface of each insertion hole 64a and each groove 68) The cross-sectional area of the gap R between the inner circumferential surface 30a and the two motor wirings 27 is between the inner circumferential surface 30a of the tube member 30 and the two motor wirings 27 in other portions that are not pressed and crushed. It is smaller than the cross-sectional area of the gap R.

As shown in FIG. 3, the terminal accommodation chamber S5 communicates with the motor accommodation chamber S3 through a gap R formed between the inner circumferential surface 30a of the tube member 30 and the two motor wirings 27. Has been. In addition, since the tube member 30 is inserted and fitted into the motor wiring insertion hole 82, the terminal accommodating chamber S5 and the motor accommodating chamber S3 are provided with the inner side of the motor wiring insertion hole 82 and the tube. Communication through the gap between the outer peripheral surface 30c of the member 30 is not performed. In addition, as shown in FIG. 5, the inner circumferential surface of the side wall 63 forming the merchant ship bundle insertion recess 74 and the opening 64b is the merchant ship bundle insertion passage part 83 through which the merchant ship bundle 29 is inserted. It is composed of.

As shown in FIG. 2, the lid member 71 has three extension portions 75 extending from the first end surface 72b of the lid portion 72. As shown in FIG. 3, each extension part 75 has the opening 64b so that the end opposite to the lid part 72 is located at the side of the conductive member insertion hole 66 rather than the end part on the lid part 72 side. It is accommodated in each insertion hole 64a through each. The end of each extension part 75 on the side opposite to the lid part 72 is an end part on the side opposite to the side of the conductive member insertion hole 66 in the second connection part 52 of each connection terminal 50 It is confronting with. The extension part 75 regulates the movement of the connection terminal 50 toward the opening 64b side.

As shown in FIG. 2, the lid member 71 has a protruding portion 76 protruding from the second end surface 72c of the lid portion 72. When the protrusion 76 is inserted into the inside of the second connection portion 52 of each connection terminal 50, the cover member 71, which received a load from each connection terminal 50, moves. In order not to do so, it is a part supported by a jig not shown. The outer circumferential surface 76a of the protrusion 76 is located further inside the outer circumferential surface 72a of the lid part 72. Accordingly, a gap is formed between the inner circumferential surface of the side wall 63 forming the opening 64b of the case member 61 and the outer circumferential surface 76a of the protruding portion 76 of the lid portion 72.

3, 5, and 6, a resin 90 is filled between the inner circumferential surface of the side wall 63 forming the opening 64b and the outer circumferential surface 76a of the protrusion 76. The resin 90 is, for example, an adhesive. And, with the resin 90 sealing between the inner circumferential surface of the side wall 63 forming the opening 64b and the outer circumferential surface 76a of the protruding portion 76, the side wall 63 forming the opening 64b is The inner circumferential surface and the outer circumferential surface 76a of the protruding portion 76 are adhered via a resin 90. Moreover, the resin 90 also flows into the merchant ship accommodation chamber 67 through the inner peripheral surface of the merchant ship bundle 29 and the merchant ship bundle insertion passage part 83. Thereby, the merchant ship bundle insertion passage part 83 is sealed, and the merchant ship bundle 29 and the cluster block 60 are adhered through the resin 90. The resin 90 is filled between the inner circumferential surface of the opening 64b and the outer circumferential surface 30c of the tube member 30. Therefore, the electric compressor 10 is provided with the resin 90 filled between the inner peripheral surface of the opening part 64b of the terminal accommodating hole 64 and the outer peripheral surface 30c of the tube member 30.

As shown in FIG. 7, the filling of the resin 90 is performed by the application nozzle N. When filling the resin 90, the case member 61 is formed by a holding member (not shown) so that the tube member 30 is located on the upper side in the gravitational direction, and the guide part 62b is located on the lower side in the gravitational direction. maintain. The application nozzle N is disposed on the opposite side to the curved surface 63b. The application nozzle N moves to a plurality of points in the opening 64b, and applies the resin 90 into the opening 64b at each point. In short, the resin 90 is applied by dividing into a plurality of times. The resin 90 applied to each point is diffused by its own weight. After that, the filled resin 90 is heat-cured.

At this time, if the viscosity of the resin 90 to be applied is too high, it will not easily diffuse, so it is necessary to increase the application point. On the other hand, when the viscosity of the resin 90 to be applied is too low, the resin 90 passes through the gap between the inner circumferential surface of the side wall 63 forming the opening 64b and the outer circumferential surface 72a of the lid portion 72. , Penetrates into the terminal accommodation chamber S5, and attaches to the connection terminal 50. When the resin 90 adhered to the connection terminal 50 is cured, it becomes difficult to insert each conductive member 32 into the inside of the second connection portion 52 of each connection terminal 50. Therefore, the viscosity of the resin 90 to be applied is set to a viscosity that is difficult to penetrate into the terminal accommodating chamber S5 and is easily diffused. Moreover, it is preferable that the application|coating of the resin 90 to a plurality of points in the opening 64b is performed sequentially from the point where the space|interval between members is narrow and the resin 90 is difficult to fill.

In the electric compressor 10 of the above configuration, the electric motor 18 is connected from the motor drive circuit 20 to each cable 20a, each conductive member 32, each connection terminal 50, and each motor wiring 27. ), when power is supplied, the electric motor 18 is driven, and the compression unit 17 is driven by the rotation of the rotation shaft 16 accompanying the driving of the electric motor 18, and the refrigerant is transferred to the compression unit 17 Compressed by

The operation and effect of the first embodiment will be described.

(1) The refrigerant flowing in the motor accommodation chamber S3 may infiltrate into the terminal accommodation chamber S5 through the motor wiring insertion hole 82, and the lubricating oil contained in the refrigerant is the connection terminal 50 And the motor housing 12 may be a conductor to conduct. In general, it is known that the resistance of a conductor is proportional to the length of the conductor. For this reason, the longer the length of the conductor, the greater the resistance of the conductor. That is, the longer the distance between the connection terminal 50 and the motor housing 12 through the lubricating oil (the insulation distance between the connection terminal 50 and the motor housing 12), the more the connection terminal 50 and the motor housing 12 ) Can increase the insulation.

In the configuration in which the tube member 30 is not formed, the refrigerant flowing in the motor accommodating chamber S3 passes through the gap between the motor wiring insertion hole 82 and the two motor wirings 27, and the terminal accommodating chamber S5 ) Invades. On the other hand, in the configuration in which the tube member 30 is formed, the refrigerant penetrates into the terminal accommodation chamber S5 through the inside of the tube member 30 and the gap R between the two motor wirings 27. By forming the tube member 30, compared with the case where the tube member 30 is not formed, the insulating distance between the connection terminal 50 and the motor housing 12 becomes longer. Accordingly, the insulation between the connection terminal 50 and the motor housing 12 can be improved.

In addition, when a refrigerant containing lubricating oil enters the terminal accommodation chamber S5, the lubricating oil can become a conductor that conducts the connection terminal 50 and the motor housing 12. Therefore, there is a fear that insulation between the connection terminal 50 and the motor wiring 27 and the motor housing 12 may not be ensured. On the other hand, since a part of the terminal accommodation hole 64 is partitioned as the terminal accommodation chamber S5 by the lid member 71, it becomes difficult for the refrigerant containing lubricating oil to penetrate into the terminal accommodation chamber S5. Thus, insulation between the connection terminal 50 and the motor housing 12 is ensured. From the above, the insulation between the connection terminal 50 and the motor housing 12 can be improved.

(2) On the inner circumferential surface of each insertion hole 64a, a groove 68 having a shape along the outer circumferential surface 30c of the tube member 30 is formed. Each groove 68 is formed on the inner peripheral surface of each insertion hole 64a on the side of the opening 64b. For this reason, the position of the connection terminal 50 in the terminal accommodating chamber S5 is not changed. That is, the position of the axial center of the second connection portion 52 of the connection terminal 50 with respect to the conductive member insertion hole 66 is not changed. Accordingly, the conductive member 32 can be smoothly connected to the second connection portion 52 of the connection terminal 50.

(3) In general, it is known that the resistance of a conductor is inversely proportional to the cross-sectional area of the conductor. For this reason, the smaller the cross-sectional area of the conductor, the greater the resistance of the conductor. The tube member 30 is at least partially pressed by the motor wiring insertion groove 73 of the lid portion 72 to abut the bottom surface of the groove 68 and also abut the inner peripheral surface of the opening 64b. It is transformed. For this reason, in the step difference between the inner circumferential surface of the opening 64b and the groove 68, the cross-sectional area of the gap R between the inner circumferential surface 30a of the tube member 30 and the motor wiring 27 becomes small, so that the gap R ) It is possible to increase the resistance of the refrigerant containing the lubricating oil flowing through it. Accordingly, the insulation between the connection terminal 50 and the motor housing 12 can be further improved.

(4) By making the diameter of the motor wiring insertion hole 82 smaller than the inner diameter of the tube member 30, and passing the tube member 30 through the motor wiring insertion hole 82, the tube member 30 The crushing portion 30b is formed in the portion inserted into the motor wiring insertion hole 82 and fitted therein. By simply changing the diameter of the motor wiring insertion hole 82, which is an essential configuration in the cluster block 60, the cross-sectional area of the gap R between the inner circumferential surface 30a of the tube member 30 and the motor wiring 27 In order to be small, the crushed portion 30b can be easily formed in the tube member 30.

(5) The electric compressor 10 is provided with the resin 90 filled between the inner peripheral surface of the opening part 64b of the terminal accommodating hole 64 and the outer peripheral surface 30c of the tube member 30. According to this, since the sealing property of the terminal accommodating chamber S5 is increased by the resin 90, the insulation resistance is increased.

(6) The motor wiring insertion hole 82 is formed by providing the case member 61 and the lid member 71. For this reason, compared with the case where the through hole passing through the cover part 72 is used as the motor wiring insertion through hole 82, for example, the motor wiring insertion through hole 82 can be easily formed. It is easy to insert the tube member 30 through the motor wiring insertion hole 82.

(2nd embodiment)

Hereinafter, a second embodiment in which an electric compressor is embodied will be described with reference to FIGS. 8 and 9. Note that, except for the shape of the inner circumferential surface of the side wall 63 forming the opening 64b, since the configuration is the same as that of the first embodiment, a description is omitted.

As shown in FIG. 8, the inner circumferential surface of the side wall 63 forming the opening 64b is the first long-side inner surface 631 facing in the width direction of the case member 61 when viewed from the front of the case member 61 ) And a second long-side inner surface 632. The first long-side inner surface 631 is a surface along the curved surface 63b of the side wall 63, and the second long-side inner surface 632 is a flat surface along the direction in which the long side of the case member 61 extends. The inner circumferential surface of the side wall 63 forming the opening 64b is the first end-side inner surface 633 located on both sides of the case member 61 in the longitudinal direction when viewed from the front of the case member 61. ) And a second end-side inner surface 634. The first end-side inner surface 633 and the second end-side inner surface 634 are, respectively, flat surfaces along the direction in which the short side of the case member 61 extends. The inner circumferential surface of the side wall 63 forming the opening 64b is a first connection surface 635 as a curved surface connecting one end of the first long-side inner surface 631 and one end of the first end-side inner surface 633, It has a second connection surface 636 connecting one end of the second long-side inner surface 632 and one end of the second short-side inner surface 634. The first connection surface 635 is an arc-shaped when viewed from the front to the opening 64b. Moreover, the 2nd connection surface 636 is a curved surface curved in an arc shape. The inner circumferential surface of the side wall 63 forming the opening 64b connects the other end of the first end-side inner surface 633 and the other end of the second long-side inner surface 632 when viewed from the front of the case member 61 It has a third connection surface 637 and a fourth connection surface 638 that connects the other end of the first long-side inner surface 631 and the other end of the second end-side inner surface 634. The third connection surface 637 and the fourth connection surface 638 are each a flat surface. Of the three tube members 30, the tube member 30 positioned near the first end-side inner surface 633 is referred to as the end-side tube member 301.

9, the distance between the first long-side inner surface 631 and the outer peripheral surface 30c of the short-side tube member 301 is the first distance X, and the first short-side inner surface 633 and the short-side tube member ( The distance of the outer peripheral surface 30c of 301) is taken as the second distance Y. The first distance X is a distance between an arbitrary point on the first long-side inner surface 631 and a point on the outer peripheral surface 30c closest to the point. The second distance Y is a distance between an arbitrary point on the first end-side inner surface 633 and a point on the outer peripheral surface 30c closest to the point. The shortest distance X0 of the first distance X is longer than the shortest distance Y0 of the second distance Y. Moreover, the distance between the 1st connection surface 635 and the outer peripheral surface 30c of the end tube member 301 is made into 3rd distance Z. The third distance Z is a distance between an arbitrary point on the first connection surface 635 and a point on the outer peripheral surface 30c closest to the point. The 3rd distance Z of this embodiment is longer than the shortest distance Y0 of the 2nd distance Y, and is equal to the shortest distance X0 of the 1st distance X. In addition, the third distance Z is constant between one end of the first long-side inner surface 631 side in the first connection surface 635 and the other end of the first end-side inner surface 633 side. . Accordingly, the arc drawn by the first connection surface 635 is a third distance Z, which is the distance between the first connection surface 635 and the outer peripheral surface 30c of the short tube member 301 as it goes from one end to the other end. Is formed so as to always be the same.

By the way, the moving range of the application nozzle N with respect to the opening 64b may be limited by the arrangement of the tube member 30 in the opening 64b. In this embodiment, a portion sandwiched between the first long-side inner surface 631, the first short-side inner surface 633, and the first connection surface 635 and the outer peripheral surface 30c of the short-side tube member 301 is , It is a nozzle disposition impossible space A (indicated by dots in Figs. 8 and 9) in which the application nozzle N cannot be positioned. Accordingly, the nozzle dispositionable space A is a space between the surface in the vicinity of the end tube member 301 as the inner circumferential surface of the opening 64b and the outer circumferential surface 30c of the end tube member 301. Therefore, the resin 90 cannot be directly applied to the space A in which the nozzle cannot be disposed by the application nozzle N. For this reason, the filling of the resin 90 into the nozzle dispositionable space A is to apply the resin 90 in the vicinity of the nozzle dispositionable space A by the application nozzle N, and the applied resin 90 ) Flows into the space (A) where the nozzle cannot be arranged.

Next, the operation of the second embodiment will be described together with a comparative example.

For example, in the comparative example shown in FIG. 10, the 1st distance X increases as the 1st distance X goes toward the 1st connection surface 635 from the part where the 1st distance X becomes the shortest distance X0. Similarly, the second distance Y increases as the second distance Y goes from the portion where the shortest distance Y0 is toward the first connection surface 635. For this reason, the 3rd distance Z is longer than the shortest distance X0 of the 1st distance X, and longer than the shortest distance Y0 of the 2nd distance Y. Accordingly, the space A in which the nozzle cannot be disposed is widened as it is separated from the portion where the first distance X becomes the shortest to the first connection surface 635 side. In addition, the space A in which the nozzle cannot be arranged is widened as the second distance Y is separated from the portion where the second distance Y becomes the shortest to the first connection surface 635 side. Depending on the shape of the inner circumferential surface of the side wall 63 forming the opening 64b or the arrangement of the tube member 30 in the opening 64b as described above, the nozzle dispositionable space A by the application nozzle N Even if the resin 90 is applied in the vicinity of ), a portion in which the resin 90 is not filled may occur in the space A in which the nozzle cannot be disposed.

The resin 90 applied in the vicinity of the nozzle disposition impossible space A by the application nozzle N is, for example, a portion at which the first distance X in the nozzle disposition impossible space A becomes the shortest It flows in toward between the 1st connection surface 635 and the outer peripheral surface 30c of the end tube member 301 through via. At this time, the nozzle disposition impossible space A of the comparative example is widened as it is separated from the portion where the first distance X becomes the shortest to the first connection surface 635 side. Therefore, the space A in which nozzle arrangement|positioning is impossible is diffused with respect to the flow direction (advancing direction) of the resin 90. Therefore, the resin 90 is the outer circumferential surface 30c or the first long-side inner surface ( 631), and the capillary phenomenon acting on the resin 90 is in a direction in the vicinity of the portion where the first distance X in the nozzle dispositionable space A becomes the shortest (arrow M11 shown in FIG. 10). ) In the direction of). In short, since the capillary phenomenon acting on the resin 90 acts in a direction opposite to the flow direction of the resin 90, the flow of the resin 90 may be stopped.

In addition, the resin 90 applied in the vicinity of the nozzle disposition impossible space A by the application nozzle N has, for example, the shortest second distance Y in the nozzle disposition impossible space A. It flows in toward between the 1st connection surface 635 and the outer peripheral surface 30c of the short-side tube member 301 through the part which becomes. At this time, the nozzle disposition impossible space A of the comparative example is widened as it is separated from the portion where the second distance Y becomes the shortest to the first connection surface 635 side. Therefore, the space A in which nozzle arrangement|positioning is impossible is diffused with respect to the flow direction (advancing direction) of the resin 90. Therefore, the resin 90 is the outer circumferential surface 30c or the first end-side inner surface ( 633), the capillary phenomenon acting on the resin 90 is in a direction in the vicinity of the portion where the second distance Y in the nozzle dispositionable space A becomes the shortest (arrow M12 shown in FIG. 10) ) In the direction of). In short, since the capillary phenomenon acting on the resin 90 acts in a direction opposite to the flow direction of the resin 90, the flow of the resin 90 may be stopped. Therefore, there is a possibility that a portion in which the resin 90 is not filled in the space A in which the nozzle cannot be disposed may occur.

In contrast, in the second embodiment, the third distance Z is equal to the shortest distance X0 of the first distance X, and from the first long-side inner surface 631 to the first short-side inner surface 633 It is constant among the. For this reason, there is no case where the nozzle disposition impossible space A is widened as it is separated from the portion where the first distance X becomes the shortest to the first connection surface 635 side. Therefore, the resin 90 applied in the vicinity of the nozzle disposition impossible space A by the application nozzle N is, for example, the first distance X in the nozzle disposition impossible space A is the shortest. When flowing through the first connection surface 635 and the outer circumferential surface 30c of the end tube member 301 through the portion, the outer circumferential surface 30c or the first connection surface 635 of the end tube member 301 Easy to reach As a result, since the capillary phenomenon acting on the resin 90 acts in the same direction as the flow direction of the resin 90, stopping the flow of the resin 90 is suppressed by the capillary phenomenon. Alternatively, at least the capillary phenomenon acting on the resin 90 does not act in a direction opposite to the flow direction of the resin 90, and thus stopping the flow of the resin 90 is suppressed. Therefore, it becomes easy to fill the resin 90 in the entire space A in which the nozzle cannot be arranged.

In the second embodiment, in addition to the effects (1) to (6) of the first embodiment, the following effects can be obtained.

(7) The arc drawn by the first connection surface 635 is a third distance Z, which is the distance between the first connection surface 635 and the outer peripheral surface 30c of the short tube member 301 as it goes from one end to the other end. ) Is formed so that it is always the same. According to this, it is easy for the resin to come into contact with the outer peripheral surface 30c or the first connection surface 635 of the short tube member 301, and the resin 90 is preferably arranged in the nozzle due to the capillary phenomenon acting on the resin 90. It flows into the impossible space (A). Alternatively, at least the capillary phenomenon acting on the resin 90 does not act in a direction opposite to the flow direction of the resin 90, and thus stopping the flow of the resin 90 is suppressed. Therefore, it becomes easy to fill the resin 90 in the entire space A in which the nozzle cannot be arranged.

The above embodiment can be changed and implemented as follows. The above embodiment and the following modified examples can be implemented in combination with each other within a range not technically contradictory.

○ The case member 61 may have a configuration in which the partition wall 65 is omitted. In this case, the three insertion holes 64a and the openings 64b are integrated, and the terminal accommodating hole 64 becomes one space in which the three connection terminals 50 are accommodated.

○ The conductive member insertion hole 66 may be formed in the side wall 63 of the case member 61. In this case, the direction of the axial center of the second connecting portion 52 is orthogonal to the longitudinal direction of the first connecting portion 51. That is, the insertion direction of the conductive member 32 with respect to the second connection portion 52 of the connection terminal 50 is orthogonal to the longitudinal direction of the first connection portion 51.

○ The arrangement mode of each insertion hole 64a and the merchant ship accommodation chamber 67 in the case member 61 of the cluster block 60 may be changed suitably. For example, each insertion hole 64a and the merchant ship accommodation chamber 67 may be arrange|positioned in a straight line.

○ The case member 61 may have a configuration in which each groove 68 is omitted. In this case, each motor wiring insertion hole 82 is constituted by an inner peripheral surface of the opening 64b and an outer peripheral surface 72a of the lid portion 72.

○ The cover member 71 may have a configuration in which the extension portion 75 is omitted.

○ In the lid member 71, the shape of the protruding portion 76 may be appropriately changed. In addition, the cover member 71 may have a configuration in which the protruding portion 76 is omitted.

○ The configuration of the merchant ship bundle insertion passage part 83 may be appropriately changed. The merchant ship bundle insertion passage part 83 may be, for example, a through hole penetrating the lid part 72.

○ The shape of the tube member 30 may be appropriately changed. The tube member 30 may be, for example, a square cylinder or a triangular cylinder. In addition, the shape of the groove 68 and the motor wiring insertion passage 73 forming the motor wiring insertion hole 82 is not limited to an elliptical shape, and may be appropriately changed according to the shape of the tube member 30. .

○ The tube member 30 does not have to have the crushing part 30b.

○ The configuration for forming the crushed portion 30b by pressing the tube member 30 may be appropriately changed. For example, the circular hole passing through the lid part 72 may be used as the motor wiring insertion hole 82, and the diameter of the circular hole may be smaller than the outer diameter of the tube member 30. Moreover, for example, the case member 61 may be provided with the protrusion protruding from the inner peripheral surface of each insertion hole 64a. In this case, the portion in contact with the protrusion in the tube member 30 is bent to form the crushed portion 30b.

○ A portion of the tube member 30 located outside the cluster block 60 may be twisted, thereby forming the crushed portion 30b. Also in this case, since the cross-sectional area of the inner peripheral surface 30a of the tube member 30 and the gap R between the two motor wirings 27 becomes small, the resistance of the refrigerant containing the lubricating oil can be increased.

○ You may omit the resin (90). At this time, if the groove 68 of the shape along the outer peripheral surface 30c of the tube member 30 is formed on the inner peripheral surface of each insertion hole 64a, the groove 68 is the outer peripheral surface 30c of the tube member 30 Therefore, the gap between the inside of the motor wiring insertion hole 82 and the outer peripheral surface 30c of the tube member 30 becomes small. For this reason, it becomes difficult for the refrigerant to penetrate into the terminal accommodation chamber S5 through the gap between the inside of the motor wiring insertion hole 82 and the outer peripheral surface 30c of the tube member 30. Accordingly, the insulation between the connection terminal 50 and the motor housing 12 can be further improved.

○ You may change the constant of the coil 26.

○ The number of conductive wires forming the coil 26 may be one or three or more.

(Circle) You may change the number of the motor wirings 27 inserted through one tube member 30 according to the number of conductor wires forming the coil 26. However, the inner diameter of the tube member 30 and the outer diameter of the motor wiring 27 inserted through the tube member 30 are the gap R between the inner peripheral surface 30a of the tube member 30 and the motor wiring 27 ) Is formed as the diameter.

○ The number of insertion holes 64a of the terminal accommodating holes 64 of the case member 61 may be appropriately changed according to the constant of the coil 26.

○ The number of conductive member insertion holes 66 of the case member 61 may be changed according to the constant of the coil 26.

○ The number of motor wiring insertion holes 82 of the cluster block 60 may be appropriately changed according to the constant of the coil 26.

○ In the second embodiment, the shape of the inner circumferential surface of the side wall 63 forming the opening 64b may be changed as shown in FIG. 11.

In FIG. 11, the inner circumferential surface of the side wall 63 has a third distance Z shorter than the shortest distance X0 of the first distance X and longer than the shortest distance Y0 of the second distance Y. While being formed so as to be formed, it is formed to be shortened as it faces from the first long-side inner surface 631 to the first short-side inner surface 633. Accordingly, the arc drawn by the first connection surface 635 is a third distance Z, which is the distance between the first connection surface 635 and the outer peripheral surface 30c of the short tube member 301 as it goes from one end to the other end. Is formed to shorten. In this case, there is no case where the nozzle disposition impossible space A is widened as it is separated from the portion where the first distance X becomes the shortest to the first connection surface 635 side. Therefore, the resin 90 applied in the vicinity of the nozzle disposition impossible space A by the application nozzle N is, for example, the first distance X in the nozzle disposition impossible space A is the shortest. When flowing through the first connection surface 635 and the outer circumferential surface 30c of the end tube member 301 through the portion, the outer circumferential surface 30c or the first connection surface 635 Easy to reach As a result, since the capillary phenomenon acting on the resin 90 acts in the same direction as the flow direction of the resin 90, stopping the flow of the resin 90 is suppressed by the capillary phenomenon. Therefore, it becomes easy to fill the resin 90 in the entire space A in which the nozzle cannot be arranged.

○ In the second embodiment, the inner circumferential surface of the side wall 63 has a third distance Z that is shorter than the shortest distance X0 of the first distance X, and is the first from the first long-side inner surface 631 It may be formed so as to become constant between up to the short-side inner surface 633.

○ In the second embodiment, the inner circumferential surface of the side wall 63 has a third distance Z equal to or less than the shortest distance Y0 of the second distance Y, and is the first from the first short-side inner surface 633 It may be formed so as to become constant between the long-side inner surface 631.

In this case, the nozzle disposition impossible space A does not widen as it is separated from the portion where the second distance Y becomes the shortest to the first connection surface 635 side. Therefore, the resin 90 applied by the application nozzle N in the vicinity of the nozzle disposition impossible space A, for example, the second distance Y in the nozzle disposition impossible space A is the shortest. When flowing through the first connection surface 635 and the outer circumferential surface 30c of the end tube member 301 through the portion, the outer circumferential surface 30c or the first connection surface 635 Easy to reach As a result, since the capillary phenomenon acting on the resin 90 acts in the same direction as the flow direction of the resin 90, stopping the flow of the resin 90 is suppressed by the capillary phenomenon. Therefore, it becomes easy to fill the resin 90 in the entire space A in which the nozzle cannot be arranged.

○ In the second embodiment, in the inner peripheral surface of the side wall 63, the third distance Z is shorter than the shortest distance Y0 of the second distance Y, and the shortest distance ( It may be formed to be longer than X0) and to shorten from the first short-side inner surface 633 toward the first long-side inner surface 631.

In this case, there is no case where the nozzle disposition impossible space A is widened as it is separated from the portion where the second distance Y becomes the shortest to the first connection surface 635 side. Therefore, the resin 90 applied in the vicinity of the nozzle disposition impossible space A by the application nozzle N is, for example, the second distance Y in the nozzle disposition impossible space A is the shortest. When flowing through the first connection surface 635 and the outer circumferential surface 30c of the end tube member 301 through the portion, the outer circumferential surface 30c or the first connection surface 635 of the end tube member 301 Easy to reach As a result, since the capillary phenomenon acting on the resin 90 acts in the same direction as the flow direction of the resin 90, stopping the flow of the resin 90 is suppressed by the capillary phenomenon. Therefore, it becomes easy to fill the resin 90 in the entire space A in which the nozzle cannot be arranged.

○ In the second embodiment, the position of the motor wiring insertion hole 82 is limited to a position near the curved surface 63b in the width direction of the case member 61 when viewed from the front of the case member 61 It doesn't work. When viewed from the front of the case member 61, the motor wiring insertion hole 82 may be located near a surface opposite to the curved surface 63b in the width direction of the case member 61. In this case, the curved surface becomes the second connection surface 636, and the end tube member 301 becomes the tube member 30 near the second end side inner surface 634.

○ In the second embodiment, the first long-side inner surface 631 may be a flat surface.

○ In the second embodiment, the first end-side inner surface 633 may be a curved surface.

○ The compression unit 17 is not limited to a type composed of the fixed scroll 17a and the movable scroll 17b, and may be changed to, for example, a piston type or a vane type.

10: electric compressor,
11: housing,
17: compression unit,
18: electric motor,
20: motor drive circuit,
27: motor wiring,
30: tube member,
30c: outer peripheral surface,
32: conductive member,
50: connection terminal,
60: cluster block,
61: case member,
635: the first connection surface as a curved surface,
64: terminal receiving hole,
64b: opening,
68: home,
71: cover member,
82: motor wiring insertion through hole,
90: resin,
R: gap,
S3: motor accommodation room,
S5: Terminal accommodation room.

Claims (6)

A compression unit for compressing a refrigerant,
An electric motor driving the compression unit,
A motor driving circuit for driving the electric motor,
A conductive member electrically connected to the motor drive circuit,
A motor wiring drawn from the electric motor,
A connection terminal electrically connecting the motor wiring and the conductive member;
An insulating cluster block housing the connection terminal therein,
In an electric compressor having a housing forming a motor accommodation chamber accommodating the electric motor and the cluster block,
The cluster block has a terminal accommodating chamber accommodating the connection terminal, and a motor wiring insertion hole through which the motor wiring is inserted,
An insulating tube member comprising the insulating tube member to be accommodated in the terminal accommodating chamber by covering the motor wiring and having one end of the tube member inserted into the motor wiring insertion hole,
The terminal accommodating chamber is in communication with the motor accommodating chamber through a gap between the inner side of the tube member and the motor wiring,
The cluster block includes a case member having a terminal accommodating hole for accommodating the connection terminal, and a cover member for partitioning the terminal accommodating chamber while being fitted with the terminal accommodating hole,
The motor wiring insertion through hole is constituted by an inner circumferential surface of the terminal accommodating hole and an outer circumferential surface of the cover member,
The inner circumferential surface on the opening side of the terminal receiving hole has a groove shaped along the outer circumferential surface of the tube member,
The motor wiring insertion through hole is constituted by the groove and an outer circumferential surface of the cover member,
The tube member is deformed so as to contact the bottom surface of the groove while at least part of it is pressed by the outer peripheral surface of the cover member, and abut also the inner peripheral surface of the terminal accommodation chamber,
The tube member is deformed so as to be crushed at a portion inserted and fitted into the motor wiring insertion hole,
One end of the tube member accommodated in the terminal accommodation chamber is crimped by a crimping portion,
The electric compressor, wherein the center of the crushed portion of the tube member is offset with respect to the center of the portion crimped by the crimping portion. The method of claim 1,
An electric compressor comprising a resin filled between the inner circumferential surface of the opening of the terminal receiving hole and the outer circumferential surface of the tube member. The method according to claim 1 or 2,
The inner circumferential surface of the opening of the terminal receiving hole has an arc-shaped curved surface when viewed from the front of the opening,
The electric compressor, wherein the arc drawn by the curved surface is formed so that the distance between the curved surface and the tube member is always equal to or shortened from one end to the other end. delete delete delete

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