JP7272482B2 - electric compressor - Google Patents

Description

The present invention relates to an electric compressor.

The electric compressor disclosed in Patent Document 1 includes a compressing portion that compresses a refrigerant, an electric motor that drives the compressing portion, a motor drive circuit that drives the electric motor, and a conductive member electrically connected to the motor drive circuit. and motor wiring drawn out from the electric motor. Further, the electric compressor includes connection terminals for electrically connecting the motor wiring and the conductive member, an insulating cluster block for accommodating the connection terminals inside, and a motor accommodation chamber for accommodating the electric motor and the cluster block. and a housing. The cluster block has a terminal accommodation chamber for accommodating connection terminals and a motor wiring insertion hole through which motor wiring is inserted. The cluster block includes a case member having terminal receiving holes for receiving connection terminals, and a lid member for closing the openings of the terminal receiving holes and forming terminal receiving chambers. In Patent Document 1, the motor wiring insertion hole is a through hole penetrating the lid member.

JP 2013-148037 A

By the way, the refrigerant flowing in the motor accommodating chamber contains lubricating oil for good lubrication of sliding parts (for example, compression parts) in the electric compressor. Coolant containing lubricating oil may enter the terminal accommodating chamber through a gap between the inside of the motor wiring insertion hole and the motor wiring. The lubricating oil can be a conductor that connects the connection terminals and the housing. Therefore, there is a possibility that insulation between the connection terminals and the housing cannot be ensured.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electric compressor capable of improving insulation between connection terminals and a housing.

An electric compressor for solving the above problems includes a compression section for compressing a refrigerant, an electric motor for driving the compression section, a motor drive circuit for driving the electric motor, and a motor drive circuit electrically connected to each other. a connected conductive member, a motor wiring drawn out from the electric motor, a connection terminal electrically connecting the motor wiring and the conductive member, and an insulating cluster block accommodating the connection terminal therein. , a housing defining a motor housing chamber for housing the electric motor and the cluster block, wherein the cluster block includes a terminal housing chamber for housing the connection terminal and a motor wire through which the motor wiring is inserted. and an insulating tube member that covers the motor wiring and is inserted into the motor wiring insertion hole, wherein the terminal accommodating chamber is formed between the inside of the tube member and the motor wiring and the cluster block includes a case member having a terminal housing hole for housing the connection terminal, and a case member that fits into the terminal housing hole to partition the terminal housing chamber. The motor wiring insertion hole is formed between an inner peripheral surface of the terminal receiving hole and an outer peripheral surface of the lid member.

In a configuration in which no tube member is provided as in the prior art, the coolant flowing inside the motor housing enters the terminal housing through the gap between the motor wiring insertion hole and the motor wiring. On the other hand, in the configuration in which the tube member is provided, the refrigerant flowing inside the motor accommodating chamber enters the terminal accommodating chamber through the gap between the inner side of the tube member and the motor wiring. By providing the tube member, the insulating distance between the connection terminal and the housing is increased compared to the case where the tube member is not provided. Therefore, the insulation between the connection terminals and the housing can be enhanced.

Further, when coolant containing lubricating oil enters the terminal accommodating chamber, the lubricating oil becomes a conductor that electrically connects the connection terminals and the housing, and there is a risk that insulation between the connection terminals and the housing cannot be ensured. On the other hand, since a part of the terminal receiving hole is defined as the terminal receiving chamber by the lid member, the refrigerant containing lubricating oil is less likely to enter the terminal receiving chamber. Therefore, insulation between the connection terminals and the housing is ensured. As described above, the insulation between the connection terminals and the housing can be improved.

Further, in the electric compressor, a groove having a shape along the outer peripheral surface of the tube member is formed in the inner peripheral surface of the terminal accommodating hole on the opening side, and the motor wiring insertion hole is formed between the groove and the lid. It is preferably formed between the outer peripheral surface of the member.

According to this, since the groove runs along the outer peripheral surface of the tube member, the gap between the inner side of the motor wiring insertion hole and the outer peripheral surface of the tube member is reduced. For this reason, the coolant is less likely to enter the terminal accommodating chamber through the gap between the inner side of the motor wiring insertion hole and the outer peripheral surface of the tube member. Therefore, the insulation between the connection terminals and the housing can be further enhanced.

Further, in the above electric compressor, the groove is formed on the inner peripheral surface of the terminal accommodating chamber, and at least a part of the tube member is pressed by the outer peripheral surface of the lid member and contacts the bottom surface of the groove. At the same time, it is preferable that the terminal accommodating chamber is accommodated inside the terminal accommodating chamber while being deformed so as to abut on the inner peripheral surface of the terminal accommodating chamber.

It is generally known that the resistance of a conductor is inversely proportional to the cross-sectional area of the conductor. Therefore, the smaller the cross-sectional area of the conductor, the higher the resistance of the conductor. At least a portion of the tube member is pressed by the outer peripheral surface of the lid member and deformed so as to contact the bottom surface of the groove and also contact the inner peripheral surface of the terminal accommodating chamber. As a result, the cross-sectional area of the gap between the inside of the tube member and the motor wiring becomes smaller at the step between the inner peripheral surface of the terminal housing chamber and the groove, so that the lubricating oil flowing through the gap between the inside of the tube member and the motor wiring is reduced. The resistance of the contained refrigerant increases. Therefore, the insulation between the connection terminals and the housing can be further enhanced.

Further, in the electric compressor, it is preferable that the tube member is deformed so as to be crushed at a portion inserted into the motor wiring insertion hole.
According to this, the tube member can be easily crushed so that the cross-sectional area of the gap between the inside of the tube member and the motor wiring is reduced only by changing the shape and diameter of the motor wiring insertion hole, which is an essential configuration. can be done.

Further, it is preferable that the electric compressor is provided with resin filled between the inner peripheral surface of the opening of the terminal receiving hole and the outer peripheral surface of the tube member.
According to this, since the sealing property of the terminal accommodating chamber is improved by the resin, the insulation resistance is increased.

Further, in the electric compressor, the inner peripheral surface of the opening of the terminal receiving hole has a curved surface that is arcuate when viewed from the front of the opening, and the arc drawn by the curved surface extends from one end to the other end. It is preferred that the distance between the curved surface and the tube member is always equal or shorter as it goes.

The resin is filled with a coating nozzle, but depending on the shape of the opening and the arrangement of the tube member, there may be a space ( Nozzle placement impossible space) may occur. The nozzle-unarrangeable space is, for example, the space between the inner peripheral surface of the opening, which is in the vicinity of the tube member, and the outer peripheral surface of the tube member. Filling of the nozzle-impossible space with resin is performed by applying resin to the vicinity of the nozzle-impossible space with a coating nozzle and causing the applied resin to flow into the nozzle-impossible space.

At this time, the inner peripheral surface of the opening near the tube member is a curved surface that is arcuate in a front view of the opening, and the arc drawn by the curved surface is curved from one end to the other end. The distance between the surface and the tube member is always equal or short. According to this, the resin is likely to come into contact with the outer peripheral surface and the curved surface of the tube member, and the resin preferably flows into the nozzle-unarrangeable space due to the capillary action acting on the resin. Alternatively, at least the capillary phenomenon that acts on the resin does not act in the direction opposite to the flow direction of the resin, so that the stoppage of the flow of the resin is suppressed. Therefore, the entire nozzle-displaceable space is easily filled with the resin.

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

FIG. 2 is a side cross-sectional view of the electric compressor of the first embodiment; 3 is an exploded perspective view of the connector; FIG. Sectional drawing of a connector. Sectional drawing of a connector. Sectional drawing of a connector. A perspective view of a connector. The side view of the connector during resin filling. The front view of the connector of 2nd Embodiment. The front view which shows the relationship of the distance of the side wall of a case member, and a tube member in 2nd Embodiment. The front view which shows the relationship of the distance of the side wall of a case member, and a tube member in a comparative example. The front view which shows another example of the relationship of the distance of the side wall of a case member, and a tube member.

(First embodiment)
A first embodiment embodying an electric compressor will be described below with reference to FIGS. 1 to 7. FIG.
As shown in FIG. 1, a housing 11 of an electric compressor 10 includes a bottomed cylindrical motor housing 12 having an opening 12a formed at one end (the left end in FIG. 1) and a motor housing 12 connected to one end of the motor housing 12. and a discharge housing 13 having a cylindrical shape with a bottom. A cylindrical inverter cover 14 with a bottom is attached to the bottom wall 121 of the motor housing 12 . A discharge chamber S1 is defined between the motor housing 12 and the discharge housing 13 . A discharge port 15 is formed in 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 in the peripheral wall 122 of the motor housing 12, and an external refrigerant circuit is connected to the suction port.

The motor housing 12 accommodates a rotating shaft 16 , a compression section 17 that compresses the refrigerant, and an electric motor 18 that drives the compression section 17 . Therefore, the motor housing 12 forms a motor housing chamber S3 that houses the electric motor 18. As shown in FIG. The electric motor 18 drives the rotating shaft 16 . Compressor 17 is driven by rotation of rotating shaft 16 . The electric motor 18 is arranged closer to the bottom wall 121 (right side in FIG. 1) of the motor housing 12 than the compression portion 17 is.

A shaft support member 19 is provided between the compressing portion 17 and the electric motor 18 in the motor housing chamber S3. An insertion hole 19 a through which one end of the rotary shaft 16 is inserted is formed in the central portion of the shaft support member 19 . A radial bearing 16 a is provided between the insertion hole 19 a and one end of the rotating shaft 16 . One end of the rotary shaft 16 is rotatably supported by a shaft support member 19 via a radial bearing 16a.

A bottom wall 121 of the motor housing 12 is recessed with a bearing portion 121a. The other end of the rotary shaft 16 is inserted inside the bearing portion 121a. A radial bearing 16b is provided between the bearing portion 121a and the other end portion of the rotating shaft 16 . The other end of the rotating shaft 16 is rotatably supported by the bearing portion 121a via a radial bearing 16b.

A housing space S<b>2 is defined by the bottom wall 121 of the motor housing 12 and the inverter cover 14 . In the housing space S2, a motor drive circuit 20 (indicated by a chain 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 unit 17, the electric motor 18, and the motor drive circuit 20 are arranged in this order along the direction in which the axis L of the rotating shaft 16 extends (axial direction).

The compression unit 17 includes a fixed scroll 17a fixed in the motor housing chamber S3 and a movable scroll 17b arranged to face the fixed scroll 17a. A volume-variable compression chamber S4 is defined between the fixed scroll 17a and the movable scroll 17b. The refrigerant compressed by changing the volume of the compression chamber S4 is discharged to the discharge chamber S1. The refrigerant flowing through the motor housing chamber S3, the compression chamber S4, and the discharge chamber S1 contains lubrication for sliding parts in the electric compressor 10 (in this embodiment, for example, lubrication between the fixed scroll 17a and the movable scroll 17b). Contains lubricating oil to improve

The electric motor 18 is composed of a rotor 21 that rotates integrally with the rotary shaft 16 and a stator 22 that is fixed to the inner peripheral surface of the motor housing 12 so as to surround the rotor 21 . there is

The rotor 21 has a rotor core 23 having a cylindrical shape, and the rotor core 23 is fixed to the rotating shaft 16 . A plurality of permanent magnets 24 are embedded in the rotor core 23 , and the permanent magnets 24 are provided at equal pitches 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 U-phase, V-phase, and W-phase coils 26 provided on the stator core 25 .

A first coil end 261 of each phase protrudes from one end surface 251 of the stator core 25 . A second coil end 262 for each phase protrudes from the other end surface 252 of the stator core 25 . The first coil end 261 is located on the side of the compression section 17 (one end in the axial direction of the rotating shaft 16), and the second coil end 262 is located on the side of the motor drive circuit 20 (the other end in the axial direction of the rotating shaft 16). positioned.

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

As shown in FIG. 2 , phase wires 28 corresponding to the U-phase, V-phase, and W-phase coils 26 are bundled as a phase wire bundle 29 . At the tip of each phase line 28, the conducting wire from which the insulating coating is removed is exposed. The phase wire bundle 29 has a phase wire connection portion 29a (neutral point) where the tip portions of the phase wires 28 are electrically connected to each other.

As shown in FIG. 1, the bottom wall 121 of the motor housing 12 is formed with a through hole 121b. An airtight terminal 31 is arranged in the through hole 121b. The airtight 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 through the through hole 121b and has one end electrically connected to the motor drive circuit 20 via the cable 20a. The other end of each conductive member 32 protrudes into the motor accommodation chamber S3 from the accommodation space S2 through the through hole 121b. The airtight terminal 31 also has three insulating members 33 made of glass (only one is shown in FIG. 1) that insulate and fix each conductive member 32 to the bottom wall 121 .

A 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 arranged on the outer peripheral side of the stator core 25 and the second coil end 262 in the radial direction of the rotating shaft 16 .

As shown in FIG. 2, the connector 40 includes three connection terminals 50 corresponding to the U-phase, V-phase, and W-phase coils 26, and an insulating cluster block 60 that accommodates the three connection terminals 50. ing.

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

Each connection terminal 50 has a crimping portion 53 for crimping the end of the tube member 30 on the side of the first connection portion 51 and the two motor wirings 27 . The crimped portion 53 extends from one end of the first connecting portion 51 on the tube member 30 side so as 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 while being inserted through the tube member 30 . The second connection portion 52 has a substantially long rectangular tubular shape that is continuous with the other end portion of the first connection portion 51 . The other end of the conductive member 32 is inserted inside the second connecting portion 52 . The axial direction of the second connecting portion 52 coincides with the longitudinal direction of the first connecting portion 51 . Therefore, the direction in which the conductive member 32 is inserted into the second connection portion 52 of the connection terminal 50 coincides with the longitudinal direction of the first connection portion 51 .

As shown in FIGS. 2 and 3 , the cluster block 60 includes a case member 61 and a lid member 71 attached to the case member 61 .
As shown in FIG. 2, the case member 61 is in the shape of a flat rectangular box formed by a bottom wall 62 and side walls 63 erected from the edges of the bottom wall 62 . The case member 61 has terminal receiving holes 64 . As shown in FIG. 3, the terminal housing hole 64 includes each connection terminal 50, a portion of each tube member 30 on the first connection portion 51 side, and the first connection portions of the two motor wires 27 of each phase. 51 side is accommodated. The terminal receiving hole 64 has three insertion holes 64a and an opening 64b communicating with the three insertion holes 64a. The opening 64b opens on the side of the side wall 63 opposite to the bottom wall 62 side. Each insertion hole 64 a is separated from other insertion holes 64 a by a partition wall 65 formed inside the case member 61 . Each insertion hole 64 a is elongated with its axis extending along the erecting direction of the side wall 63 from the bottom wall 62 . The axial direction of each insertion hole 64 a 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 side by side in the direction in which the long sides of the case member 61 extend in a front view of the case member 61 viewed from the opening 64b side. Therefore, the second connection portions 52 of the connection terminals 50 accommodated in the terminal accommodation holes 64 are also aligned in the direction in which the long side of the case member 61 extends. When the case member 61 is viewed from the front, each insertion hole 64a has a substantially rectangular shape. The longitudinal direction of each insertion hole 64 a coincides with the longitudinal direction of each second connection portion 52 , and the lateral direction of each insertion hole 64 a coincides with the lateral direction of each second connection portion 52 . Further, the longitudinal direction of each insertion hole 64 a is inclined with respect to the long side of the case member 61 .

As shown in FIG. 3, the bottom wall 62 of the case member 61 is formed with circular through holes 62a communicating with the insertion holes 64a. Each through hole 62a is positioned inside each second connection portion 52 when viewed from the axial direction of each through hole 62a. As shown in FIGS. 2 and 3, three cylindrical guide portions 62b protrude from the outer surface of the bottom wall 62 of the case member 61. As shown in FIG. The inside of each guide portion 62b communicates with each through hole 62a. The axis of each guide portion 62b and the axis of each through hole 62a are aligned. The other end of each conductive member 32 is inserted inside each guide portion 62b and inside the second connection portion 52 of each connection terminal 50 via each through hole 62a. Thereby, each conductive member 32 and each connection terminal 50 are electrically connected. Therefore, the inside of each guide portion 62b and each through hole 62a form a conductive member insertion hole 66 through which each conductive member 32 is inserted. Therefore, the case member 61 has a conductive member insertion hole 66 .

As shown in FIG. 4, the case member 61 has a bottomed cylindrical phase wire receiving chamber 67 therein. The phase wire connection portion 29 a of the phase wire bundle 29 is accommodated in the phase wire accommodation chamber 67 . The phase wire storage chamber 67 has an elongated hole shape whose axis extends along the erecting direction of the side wall 63 from the bottom wall 62 . The axial direction of the line receiving chamber 67 coincides with the axial direction of the insertion hole 64a. The phase wire storage chamber 67 is separated from each insertion hole 64a by a partition wall 65 . Of the three insertion holes 64a arranged side by side, the line receiving chamber 67 is located at one end in the longitudinal direction of the inner peripheral surface of the insertion hole 64a located at the center, and the insertion hole located at one end. It is adjacent to each of the portions located on one side of the inner peripheral surface of 64 a in the short direction via partition wall 65 . The phase wire receiving chamber 67 communicates with the opening 64 b of the terminal receiving hole 64 .

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

As shown in FIG. 3, each connection terminal 50 is accommodated in each insertion hole 64a via an opening 64b such that the second connection portion 52 is located closer to the conductive member insertion hole 66 than the first connection portion 51 is. It is The phase wire bundle 29 is accommodated in the phase wire accommodation chamber 67 through the opening 64b so that the phase wire connecting portion 29a is 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 63 b that curves concavely toward the inside of the case member 61 . Curved surface 63 b is a surface extending along the outer peripheral surface of stator core 25 . The connector 40 of this embodiment is arranged in the motor accommodation chamber S3 so that the curved surface 63b is along the outer peripheral surface of the stator core 25. As shown in FIG.

The lid member 71 has a plate-like lid portion 72 . The outer peripheral surface 72a of the lid portion 72 extends along the inner peripheral surface of the side wall 63 forming the opening 64b. As shown in FIG. 3, the lid member 71 defines a terminal accommodating chamber S5 by fitting the lid portion 72 into an opening 64b that is a part of the terminal accommodating hole 64 of the case member 61. As shown in FIG. . Therefore, the lid member 71 is fitted into the terminal receiving hole 64 and defines the terminal receiving chamber S5. The outer peripheral surface 72a of the lid portion 72 faces the inner peripheral surface of the side wall 63 forming the opening 64b. A first end surface 72b of the lid portion 72 facing each insertion hole 64a of the terminal accommodating hole 64 faces an end surface 65a of the partition wall 65 on the side of the opening 64b. The thickness of the lid portion 72 is shorter than the distance between the end face 65a of the partition wall 65 on the side of the opening 64b and the end face 63c of the side wall 63 on the side of the opening 64b. Therefore, the second end surface 72c of the terminal accommodating hole 64 on the side opposite to the insertion holes 64a of the lid portion 72 is located closer to the insertion hole 64a than the end surface 63c of the side wall 63 is. As shown in FIG. 2, the lid portion 72 has three motor wiring insertion grooves 73 and a phase wire bundle insertion recess portion 74 which are recessed in the outer peripheral surface 72a of the lid portion 72 . The bottom surface of each motor wiring insertion groove 73 is arcuate.

As shown in FIG. 3, each of the motor wire insertion grooves 73 and the grooves 68 constitutes an annular motor wire insertion hole 82 into which the tube member 30 through which the two motor wires 27 are inserted is inserted. As shown in FIG. 5 , the motor wiring insertion hole 82 is positioned closer to the curved surface 63 b in the lateral direction of the case member 61 when the case member 61 is viewed from the front. The motor wiring insertion hole 82 of this embodiment is elliptical. The tube member 30 passes through the motor wiring insertion hole 82 . An end portion of the tube member 30 on the side of the first connecting portion 51 is located in the terminal accommodating chamber S5, and an opposite end portion thereof is located in the motor accommodating 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 . Therefore, the tube member 30 has a crushed portion 30b at a portion inserted into the motor wiring insertion hole 82. As shown in FIG. The crushed portion 30 b is formed by being crushed by the motor wiring insertion groove 73 and the groove 68 . The tube member 30 is pressed by the motor wiring insertion groove 73 and is deformed so as to contact the bottom surface of the groove 68 and the inner peripheral surface of the opening 64b. The center of the crushed portion 30 b of the tube member 30 is offset with respect to the center of the portion of the tube member 30 crimped by the crimped portion 53 . A gap R is also provided between the inner peripheral surface 30a of the tube member 30 and the two motor wires 27 in the crushed portion 30b. The inner peripheral surface 30a of the tube member 30 and the two motor wires 27 in the crushed portion 30b and the periphery of the crushed portion 30b (including the portion in contact with the step formed by the inner peripheral surface of each insertion hole 64a and each groove 68) is smaller than the cross-sectional area of the gap R between the inner peripheral surface 30a of the tube member 30 and the two motor wires 27 in other portions that are not crushed.

As shown in FIG. 3, the terminal accommodating chamber S5 communicates with the motor accommodating chamber S3 via a gap R provided between the inner peripheral surface 30a of the tube member 30 and the two motor wires 27. As shown in FIG. Since the tube member 30 is inserted into the motor wiring insertion hole 82, the terminal housing chamber S5 and the motor housing chamber S3 form a gap between the inner side of the motor wiring insertion hole 82 and the outer peripheral surface 30c of the tube member 30. No communication is made through Further, as shown in FIG. 5, the inner peripheral surface of the side wall 63 forming the phase wire bundle insertion recess 74 and the opening 64b constitutes the phase wire bundle insertion portion 83 through which the phase wire bundle 29 is inserted.

As shown in FIG. 2 , the lid member 71 has three extending portions 75 extending from the first end surface 72 b of the lid portion 72 . As shown in FIG. 3, each extending portion 75 is formed through the opening 64b such that the end opposite to the lid portion 72 is positioned closer to the conductive member insertion hole 66 than the end portion on the lid portion 72 side. are accommodated in respective insertion holes 64a. The end portion of each extension portion 75 opposite to the lid portion 72 faces the end portion of the second connection portion 52 of each connection terminal 50 opposite to the conductive member insertion hole 66 side. The extending portion 75 restricts movement of the connection terminal 50 toward the opening 64b.

As shown in FIG. 2 , the lid member 71 has a projecting portion 76 projecting from the second end surface 72 c of the lid portion 72 . The protruding portion 76 is provided with a jig (not shown) so that the lid member 71 that receives the load from each connection terminal 50 does not move when each conductive member 32 is inserted inside the second connection portion 52 of each connection terminal 50 . This is the part supported by An outer peripheral surface 76 a of the protruding portion 76 is located inside the outer peripheral surface 72 a of the lid portion 72 . Therefore, a gap is formed between the inner peripheral surface of the side wall 63 forming the opening 64b of the case member 61 and the outer peripheral surface 76a of the projecting portion 76 of the lid portion 72 .

As shown in FIGS. 3, 5, and 6, resin 90 is filled between the inner peripheral surface of the side wall 63 forming the opening 64b and the outer peripheral surface 76a of the projecting portion 76. As shown in FIG. Resin 90 is, for example, an adhesive. The resin 90 seals the space between the inner peripheral surface of the side wall 63 forming the opening 64b and the outer peripheral surface 76a of the protruding portion 76, and also seals the inner peripheral surface of the side wall 63 forming the opening 64b from the protruding portion 76a. The outer peripheral surface 76 a of the portion 76 is adhered via the resin 90 . The resin 90 also flows into the phase wire receiving chamber 67 through the space between the phase wire bundle 29 and the inner peripheral surface of the phase wire bundle insertion portion 83 . As a result, the phase wire bundle insertion portion 83 is sealed, and the phase wire bundle 29 and the cluster block 60 are adhered via the resin 90 . The resin 90 is filled between the inner peripheral surface of the opening 64 b and the outer peripheral surface 30 c of the tube member 30 . Therefore, the electric compressor 10 has the resin 90 filled between the inner peripheral surface of the opening 64b of the terminal receiving hole 64 and the outer peripheral surface 30c of the tube member 30. As shown in FIG.

As shown in FIG. 7, the filling of the resin 90 is performed by a coating nozzle N. As shown in FIG. When the resin 90 is filled, the case member 61 is held by a holding member (not shown) so that the tube member 30 is positioned on the upper side in the direction of gravity and the guide portion 62b is positioned on the lower side in the direction of gravity. The coating nozzle N is arranged on the side opposite to the curved surface 63b. The coating nozzle N moves to a plurality of locations within the opening 64b to apply the resin 90 to the interior of the opening 64b at each location. That is, the application of the resin 90 is performed in multiple times. The resin 90 applied to each location spreads due to its own weight. After that, the filled resin 90 is thermally cured.

At this time, if the viscosity of the resin 90 to be applied is too high, it becomes difficult to spread, so it is necessary to increase the application locations. On the other hand, if the viscosity of the applied resin 90 is too low, the resin 90 will flow through the gap between the inner peripheral surface of the side wall 63 that forms the opening 64b and the outer peripheral surface 72a of the lid portion 72, and will flow into the terminal accommodating chamber S5. inside and adhere to the connection terminal 50 . When the resin 90 adhering to the connection terminals 50 hardens, it becomes difficult to insert each conductive member 32 inside 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 makes it difficult for the resin 90 to enter the terminal accommodating chamber S5 and that the resin 90 easily spreads. In addition, it is preferable that the application of the resin 90 to a plurality of locations in the opening 64b be performed in order from locations where the distance between the members is narrow and where the resin 90 is difficult to fill.

In the electric compressor 10 configured as described above, when electric power is supplied from the motor drive circuit 20 to the electric motor 18 via each cable 20a, each conductive member 32, each connection terminal 50, and each motor wiring 27, the electric motor 18 is driven, and the rotation of the rotating shaft 16 accompanying the driving of the electric motor 18 drives the compression section 17 to compress the refrigerant.

Actions and effects of the first embodiment will be described.
(1) Refrigerant flowing in the motor housing chamber S3 may enter the terminal housing chamber S5 through the motor wiring insertion hole 82, and the lubricating oil contained in the refrigerant may cause the connection terminals 50 and the motor housing 12 to become separated. It can be a conducting conductor. It is generally known that the resistance of a conductor is proportional to the length of the conductor. Therefore, the longer the conductor, the higher the resistance of the conductor. That is, the longer the distance between the connection terminals 50 and the motor housing 12 through the lubricating oil (insulation distance between the connection terminals 50 and the motor housing 12), the higher the insulation between the connection terminals 50 and the motor housing 12. be able to.

In a configuration in which the tube member 30 is not provided, the refrigerant flowing inside the motor housing chamber S3 enters the terminal housing chamber S5 through the gap between the motor wiring insertion hole 82 and the two motor wirings 27 . On the other hand, in the configuration in which the tube member 30 is provided, the coolant enters the terminal accommodating chamber S5 through the gap R between the inner side of the tube member 30 and the two motor wires 27 . By providing the tube member 30, the insulation distance between the connection terminal 50 and the motor housing 12 is increased as compared with the case where the tube member 30 is not provided. Therefore, the insulation between the connection terminals 50 and the motor housing 12 can be improved.

Also, when coolant containing lubricating oil enters the terminal housing chamber S<b>5 , the lubricating oil can become a conductor that electrically connects the connection terminals 50 and the motor housing 12 . Therefore, there is a possibility that insulation between the connection terminal 50 and the motor wiring 27 and the motor housing 12 cannot be ensured. On the other hand, since a portion of the terminal accommodating hole 64 is defined as the terminal accommodating chamber S5 by the lid member 71, the refrigerant containing lubricating oil is less likely to enter the terminal accommodating chamber S5. Therefore, insulation between the connection terminals 50 and the motor housing 12 is ensured. As described above, the insulation between the connection terminals 50 and the motor housing 12 can be improved.

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

(3) It is generally known that the resistance of a conductor is inversely proportional to the cross-sectional area of the conductor. Therefore, the smaller the cross-sectional area of the conductor, the higher the resistance of the conductor. At least a portion of the tube member 30 is pressed by the motor wiring insertion groove 73 of the lid portion 72 and is deformed so as to contact the bottom surface of the groove 68 and the inner peripheral surface of the opening 64b. Therefore, at the step between the inner peripheral surface of the opening 64b and the groove 68, the cross-sectional area of the gap R between the inner peripheral surface 30a of the tube member 30 and the motor wiring 27 becomes smaller, so that the lubricating oil flowing through the gap R is included. Refrigerant resistance can be increased. Therefore, the insulation between the connection terminals 50 and the motor housing 12 can be further enhanced.

(4) The portion of the tube member 30 that is inserted into the motor wiring insertion hole 82 by making the diameter of the motor wiring insertion hole 82 smaller than the inner diameter of the tube member 30 and inserting the tube member 30 into the motor wiring insertion hole 82 A crushed portion 30b is formed at the bottom. Only by changing the diameter of the motor wiring insertion hole 82, which is an essential component of the cluster block 60, the cross-sectional area of the gap R between the inner peripheral surface 30a of the tube member 30 and the motor wiring 27 is reduced. The crushed portion 30b can be easily formed.

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

(6) The motor wiring insertion hole 82 is formed by assembling the case member 61 and the lid member 71 together. For this reason, for example, compared with the case where the motor wiring insertion hole 82 is a through hole that penetrates the lid portion 72 , the motor wiring insertion hole 82 can be easily formed, and the tube member 30 can be attached to the motor wiring insertion hole 82 . easy to insert.

(Second embodiment)
A second embodiment embodying an electric compressor will be described below with reference to FIGS. 8 and 9. FIG. Since the configuration is the same as that of the first embodiment except for the shape of the inner peripheral surface of the side wall 63 forming the opening 64b, description thereof will be omitted.

As shown in FIG. 8 , the inner peripheral surface of the side wall 63 forming the opening 64 b is formed by a first long-side inner surface 631 and a second long-side inner surface facing each other in the short direction of the case member 61 when viewed from the front of the case member 61 . 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 peripheral surface of the side wall 63 forming the opening 64b has a first short inner surface 633 and a second short inner surface 634 located on both sides in the longitudinal direction of the case member 61 when the case member 61 is viewed from the front. . Each of the first short inner surface 633 and the second short inner surface 634 is a flat surface along the direction in which the short side of the case member 61 extends. The inner peripheral surface of the side wall 63 forming the opening 64b includes a first connecting surface 635 as a curved surface connecting one end of the first long side inner surface 631 and one end of the first short side inner surface 633, and a second connecting surface 635 as a curved surface. It has a second connecting surface 636 that connects one end of the long inner surface 632 and one end of the second short inner surface 634 . The first connection surface 635 is arcuate when viewed from the front with respect to the opening 64b. Also, the second connection surface 636 is a curved surface curved in an arc. The inner peripheral surface of the side wall 63 forming the opening 64b is a third connection that connects the other end of the first short inner surface 633 and the other end of the second long inner surface 632 when the case member 61 is viewed from the front. It has a surface 637 and a fourth connecting surface 638 connecting the other end of the first long inner surface 631 and the other end of the second short inner surface 634 . Each of the third connection surface 637 and the fourth connection surface 638 is a flat surface. Of the three tube members 30 , the tube member 30 positioned closer to the first short inner surface 633 is called an end tube member 301 .

As shown in FIG. 9, the distance between the first long inner surface 631 and the outer peripheral surface 30c of the end tube member 301 is defined as a first distance X, and the distance between the first short inner surface 633 and the outer peripheral surface 30c of the end tube member 301 is is a second distance Y. The first distance X is the distance between an arbitrary point on the first long inner surface 631 and the point on the outer peripheral surface 30c closest to that point. The second distance Y is the distance between an arbitrary point on the first short inner surface 633 and the point on the outer peripheral surface 30c closest to that point. The shortest distance X0 of the first distance X is longer than the shortest distance Y0 of the second distance Y. A third distance Z is defined as the distance between the first connection surface 635 and the outer peripheral surface 30c of the end tube member 301 . The third distance Z is the distance between an arbitrary point on the first connection surface 635 and the point on the outer peripheral surface 30c closest to that point. The third distance Z in this embodiment is longer than the shortest distance Y0 of the second distance Y and the same as the shortest distance X0 of the first distance X. Also, the third distance Z is constant from one end of the first connecting surface 635 on the first long side inner surface 631 side to the other end on the first short side inner surface 633 side. Therefore, the arc drawn by the first connecting surface 635 is such that the third distance Z, which is the distance between the first connecting surface 635 and the outer peripheral surface 30c of the end tube member 301, is always equal from one end to the other end. is formed in

By the way, the movement range of the application nozzle N with respect to the opening 64b may be limited by the arrangement of the tube member 30 within the opening 64b. In the present embodiment, the application nozzle N is positioned in the portion sandwiched between the first long side inner surface 631, the first short side inner surface 633, the first connection surface 635, and the outer peripheral surface 30c of the end tube member 301. 8 and 9 are indicated by dots in FIG. 8 and FIG. 9 . Therefore, the nozzle-unarrangeable space A is a space between the inner peripheral surface of the opening 64 b and the surface near the end tube member 301 and the outer peripheral surface 30 c of the end tube member 301 . Therefore, the resin 90 cannot be directly applied to the nozzle non-arrangeable space A by the application nozzle N. Therefore, the filling of the nozzle impossible space A with the resin 90 is performed by applying the resin 90 to the vicinity of the nozzle impossible space A with the coating nozzle N and flowing the applied resin 90 into the nozzle impossible space A. will be

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 first distance X increases toward the first connection surface 635 from the portion where the first distance X is the shortest distance X0. Similarly, the second distance Y becomes longer toward the first connection surface 635 from the portion where the second distance Y is the shortest distance Y0. Therefore, the third distance Z is longer than the shortest distance X0 of the first distance X and longer than the shortest distance Y0 of the second distance Y. Therefore, the nozzle-unarrangeable space A widens as it moves away from the portion where the first distance X is the shortest toward the first connection surface 635 . In addition, the nozzle disposition impossible space A widens as it separates from the portion where the second distance Y is the shortest toward the first connection surface 635 side. Depending on the shape of the inner peripheral surface of the side wall 63 forming the opening 64b and the arrangement of the tube member 30 in the opening 64b, the resin 90 may be applied by the application nozzle N to the vicinity of the nozzle non-arrangeable space A. However, there may be a portion in which the resin 90 is not filled in the nozzle-unarrangeable space A.

The resin 90 applied to the vicinity of the nozzle non-arrangeable space A by the coating nozzle N is applied to the first connecting surface 635 and the end tube member 301 via, for example, the portion where the first distance X in the nozzle non-arrangeable space A is the shortest. flows into the space between the outer peripheral surface 30c of the At this time, the nozzle-unarrangeable space A of the comparative example widens as it moves away from the portion where the first distance X is the shortest toward the first connection surface 635 . Therefore, the nozzle-unarrangeable space A spreads with respect to the flowing direction (advancing direction) of the resin 90 . Therefore, the resin 90 easily touches the outer peripheral surface 30c and the first long side inner surface 631 of the end tube member 301 forming the vicinity of the portion where the first distance X is the shortest in the nozzle disposition space A, and acts on the resin 90. Capillary action acts in the direction (the direction of arrow M11 shown in FIG. 10) toward the vicinity of the portion where the first distance X is the shortest in the nozzle-unarrangeable space A. In other words, the capillary action acting on the resin 90 acts in the direction opposite to the flow direction of the resin 90, so the flow of the resin 90 may stop.

Further, the resin 90 applied to the vicinity of the nozzle non-arrangeable space A by the coating nozzle N passes through the portion where the second distance Y is the shortest in the nozzle non-arrangeable space A, for example. It flows into between the member 301 and the outer peripheral surface 30c. At this time, the nozzle disposition-impossible space A of the comparative example widens as it moves away from the portion where the second distance Y is the shortest toward the first connection surface 635 . Therefore, the nozzle-unarrangeable space A spreads with respect to the flowing direction (advancing direction) of the resin 90 . Therefore, the resin 90 easily touches the outer peripheral surface 30c and the first short inner surface 633 of the end tube member 301 forming the vicinity of the portion where the second distance Y is the shortest in the nozzle disposition space A, and acts on the resin 90. Capillary action acts in the direction (the direction of arrow M12 shown in FIG. 10) toward the vicinity of the portion where the second distance Y is the shortest in the nozzle-unarrangeable space A. In other words, the capillary action acting on the resin 90 acts in the direction opposite to the flow direction of the resin 90, so the flow of the resin 90 may stop. Therefore, there is a possibility that a portion of the nozzle-unarrangeable space A is not filled with the resin 90 .

In contrast, in the second embodiment, the third distance Z is the same as the shortest distance X0 of the first distance X, and is constant from the first long inner surface 631 to the first short inner surface 633. be. For this reason, the nozzle disposition impossible space A does not widen as it separates from the portion where the first distance X is the shortest toward the first connection surface 635 side. Therefore, the resin 90 applied in the vicinity of the nozzle non-arrangeable space A by the coating nozzle N passes through, for example, the portion where the first distance X in the nozzle non-arrangeable space A is the shortest, and the first connecting surface 635 and the end side tube. When it flows toward between the outer peripheral surface 30 c of the member 301 , the outer peripheral surface 30 c of the end tube member 301 and the first connecting surface 635 are easily touched. As a result, the capillary action acting on the resin 90 acts in the same direction as the flow direction of the resin 90, so that the stopping of the flow of the resin 90 is suppressed by the capillary action. Alternatively, at least the capillary phenomenon acting on the resin 90 does not act in the direction opposite to the flow direction of the resin 90, so that the flow of the resin 90 is prevented from stopping. Therefore, the resin 90 is easily filled in the entire nozzle-displaceable space A. FIG.

In the second embodiment, the following effects can be obtained in addition to the effects (1) to (6) of the first embodiment.
(7) In the arc drawn by the first connecting surface 635, the third distance Z, which is the distance between the first connecting surface 635 and the outer peripheral surface 30c of the end tube member 301, is always equal from one end to the other end. is formed as According to this, the resin 90 easily comes into contact with the outer peripheral surface 30c of the end-side tube member 301 and the first connection surface 635, and the resin 90 preferably flows into the nozzle-unarrangeable space A due to capillary action acting on the resin 90. . Alternatively, at least the capillary phenomenon acting on the resin 90 does not act in the direction opposite to the flow direction of the resin 90, so that the flow of the resin 90 is prevented from stopping. Therefore, the resin 90 is easily filled in the entire nozzle-displaceable space A. FIG.

The above embodiment can be implemented with the following modifications. The above embodiments and the following modifications can be combined with each other within a technically consistent range.
O 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 accommodation hole 64 becomes one space in which the three connection terminals 50 are accommodated.

O The conductive member insertion hole 66 may be provided in the side wall 63 of the case member 61 . In this case, the axial direction 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 into the second connection portion 52 of the connection terminal 50 is perpendicular to the longitudinal direction of the first connection portion 51 .

(circle) the arrangement|positioning aspect of each insertion hole 64a in the case member 61 of the cluster block 60, and the phase wire accommodation chamber 67 may be changed suitably. For example, the insertion holes 64a and the line receiving chambers 67 may be arranged in a straight line.

O The case member 61 may have a configuration in which the grooves 68 are omitted. In this case, each motor wiring insertion hole 82 is formed between the inner peripheral surface of the opening 64 b and the outer peripheral surface 72 a of the lid portion 72 .

(circle) the cover member 71 may be the structure which abbreviate|omitted the extension part 75. As shown in FIG.
(circle) in the cover member 71, the shape of the protrusion part 76 may be changed suitably. Also, the lid member 71 may have a configuration in which the projecting portion 76 is omitted.

(circle) the structure of the phase wire bundle insertion part 83 may be changed suitably. The phase wire bundle insertion portion 83 may be, for example, a through hole penetrating the lid portion 72 .
(circle) the shape of the tube member 30 may be changed suitably. The tube member 30 may be, for example, a square tube or a triangular tube. Further, the shape of the groove 68 forming the motor wiring insertion hole 82 and the motor wiring insertion groove 73 is not limited to an elliptical shape, and may be changed as appropriate according to the shape of the tube member 30 .

(circle) the tube member 30 does not need to have the crushing part 30b.
(circle) the structure for crushing the tube member 30 and forming the crushed part 30b may be changed suitably. For example, a circular hole passing through the lid portion 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 . Further, for example, the case member 61 may have projections that protrude from the inner peripheral surface of each insertion hole 64a. In this case, the portion of the tube member 30 that contacts the protrusion is bent to form the crushed portion 30b.

(circle) the crushed part 30b may be formed by twisting the part located outside the cluster block 60 in the tube member 30. As shown in FIG. Also in this case, since the cross-sectional area of the gap R between the inner peripheral surface 30a of the tube member 30 and the two motor wirings 27 is small, the resistance of the coolant containing the lubricating oil can be increased.

O The resin 90 may be omitted. At this time, if a groove 68 having a shape along the outer peripheral surface 30c of the tube member 30 is formed in the inner peripheral surface of each insertion hole 64a, the groove 68 will follow the outer peripheral surface 30c of the tube member 30, so that the motor wiring insertion hole The gap between the inner side of 82 and the outer peripheral surface 30c of the tube member 30 is reduced. For this reason, the coolant is less likely to enter the terminal accommodating chamber S5 through the gap between the inner side of the motor wiring insertion hole 82 and the outer peripheral surface 30c of the tube member 30. As shown in FIG. Therefore, the insulation between the connection terminals 50 and the motor housing 12 can be further enhanced.

O The number of phases of the coil 26 may be changed.
O The number of conducting wires forming the coil 26 may be one, or three or more.
(circle) the number of the motor wiring 27 penetrated by the one tube member 30 may be changed according to the number of conducting wires which form the coil 26. FIG. 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 set such that a gap R is provided between the inner peripheral surface 30a of the tube member 30 and the motor wiring 27. .

O The number of insertion holes 64a of the terminal accommodating holes 64 of the case member 61 may be appropriately changed according to the number of phases of the coil 26 .
O The number of conductive member insertion holes 66 of the case member 61 may be changed according to the number of phases of the coil 26 .

O The number of motor wiring insertion holes 82 of the cluster block 60 may be appropriately changed according to the number of phases of the coil 26 .
(circle) in 2nd Embodiment, you may change the shape of the internal peripheral surface of the side wall 63 which forms the opening part 64b like FIG.

In FIG. 11, the inner peripheral surface of the side wall 63 is formed so that the third distance Z is shorter than the shortest distance X0 of the first distance X and longer than the shortest distance Y0 of the second distance Y, and It is formed to become shorter from the long side inner surface 631 toward the first short side inner surface 633 . Therefore, the arc drawn by the first connecting surface 635 is such that the third distance Z, which is the distance between the first connecting surface 635 and the outer peripheral surface 30c of the end tube member 301, becomes shorter from one end to the other end. formed. In this case, the nozzle-unarrangeable space A does not widen as it moves away from the portion where the first distance X is the shortest toward the first connection surface 635 . Therefore, the resin 90 applied in the vicinity of the nozzle non-arrangeable space A by the coating nozzle N passes through, for example, the portion where the first distance X in the nozzle non-arrangeable space A is the shortest, and the first connecting surface 635 and the end side tube. When it flows toward between the outer peripheral surface 30 c of the member 301 , the outer peripheral surface 30 c of the end tube member 301 and the first connecting surface 635 are easily touched. As a result, the capillary action acting on the resin 90 acts in the same direction as the flow direction of the resin 90, so that the stopping of the flow of the resin 90 is suppressed by the capillary action. Therefore, the resin 90 is easily filled in the entire nozzle-displaceable space A. FIG.

○ In the second embodiment, the inner peripheral surface of the side wall 63 is such that the third distance Z is shorter than the shortest distance X0 of the first distance X and is between the first long side inner surface 631 and the first short side inner surface 633. may be formed so as to be constant at .

○ In the second embodiment, the inner peripheral surface of the side wall 63 has a third distance Z that is equal to or shorter than the shortest distance Y0 of the second distance Y, and a distance from the first short inner surface 633 to the first long inner surface 631. You may form so that it may become constant between.

In this case, the nozzle non-arrangeable space A does not widen as it moves away from the portion where the second distance Y is the shortest toward the first connection surface 635 . Therefore, the resin 90 applied in the vicinity of the nozzle non-arrangeable space A by the coating nozzle N passes through, for example, the portion where the second distance Y in the nozzle non-arrangeable space A is the shortest, and the first connecting surface 635 and the end side tube. When it flows toward between the outer peripheral surface 30 c of the member 301 , the outer peripheral surface 30 c of the end tube member 301 and the first connecting surface 635 are easily touched. As a result, the capillary action acting on the resin 90 acts in the same direction as the flow direction of the resin 90, so that the stopping of the flow of the resin 90 is suppressed by the capillary action. Therefore, the resin 90 is easily filled in the entire nozzle-displaceable space A. FIG.

○ In the second embodiment, the inner peripheral surface of the side wall 63 has a third distance Z shorter than the shortest distance Y0 of the second distance Y and longer than the shortest distance X0 of the first distance X, and It may be formed so as to become shorter from the side inner surface 633 toward the first long side inner surface 631 .

In this case, the nozzle non-arrangeable space A does not widen as it moves away from the portion where the second distance Y is the shortest toward the first connection surface 635 . Therefore, the resin 90 applied in the vicinity of the nozzle non-arrangeable space A by the coating nozzle N passes through, for example, the portion where the second distance Y in the nozzle non-arrangeable space A is the shortest, and the first connecting surface 635 and the end side tube. When it flows toward between the outer peripheral surface 30 c of the member 301 , the outer peripheral surface 30 c of the end tube member 301 and the first connecting surface 635 are easily touched. As a result, the capillary action acting on the resin 90 acts in the same direction as the flow direction of the resin 90, so that the stopping of the flow of the resin 90 is suppressed by the capillary action. Therefore, the resin 90 is easily filled in the entire nozzle-displaceable space A. FIG.

O In the second embodiment, the position of the motor wiring insertion hole 82 is not limited to a position closer to the curved surface 63b in the lateral direction of the case member 61 when the case member 61 is viewed from the front. The motor wiring insertion hole 82 may be positioned closer to the surface of the case member 61 on the side opposite to the curved surface 63 b in the lateral direction of the case member 61 when the case member 61 is viewed from the front. In this case, the curved surface becomes the second connection surface 636 and the end tube member 301 becomes the tube member 30 closer to the second short inner surface 634 .

o In the second embodiment, the first long inner surface 631 may be a flat surface.
o In the second embodiment, the first short inner surface 633 may be curved.
(circle) the compression part 17 is not limited to the type comprised by the fixed scroll 17a and the movable scroll 17b, For example, you may change into a piston type, a vane type, etc.

DESCRIPTION OF SYMBOLS 10... Electric compressor, 11... Housing, 17... Compression part, 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...First connecting surface as curved surface 64...Terminal receiving hole 64b...Opening 68...Groove 71...Lid member 82...Motor wiring insertion hole 90 ... resin, R ... gap, S3 ... motor accommodation chamber, S5 ... terminal accommodation chamber.

Claims (3)

a compression section that compresses the refrigerant;
an electric motor that drives the compression unit;
a motor drive circuit for driving the electric motor;
a conductive member electrically connected to the motor drive circuit;
motor wiring drawn out from the electric motor;
a connection terminal that electrically connects the motor wiring and the conductive member;
an insulating cluster block that accommodates the connection terminals therein;
a housing forming a motor housing chamber for housing the electric motor and the cluster block;
In an electric compressor with
The motor wiring has a conducting wire and an insulating coating covering the conducting wire,
The cluster block has a terminal accommodating chamber for accommodating the connection terminal and a motor wiring insertion hole for inserting the motor wiring,
An insulating tube member that covers the motor wiring and is inserted into the motor wiring insertion hole,
the terminal housing chamber communicates with the motor housing chamber through a gap between the inner side of the tube member and the outer side of the motor wiring;
The cluster block includes a case member having a terminal accommodation hole for accommodating the connection terminal, and a lid member that partitions and forms the terminal accommodation chamber while fitting into the terminal accommodation hole,
A groove having a shape along the outer peripheral surface of the tube member is formed on the inner peripheral surface on the opening side of the terminal receiving hole,
The motor wiring insertion hole is formed between the groove and the outer peripheral surface of the lid member,
The tube member is
At least a part of the terminal receiving chamber is pressed by the outer peripheral surface of the lid member and contacts the bottom surface of the groove, and is accommodated in the terminal receiving chamber while being deformed so as to contact the inner peripheral surface of the terminal receiving chamber,
Having a crushing portion that is deformed so as to be crushed at a portion inserted into the motor wiring insertion hole,
crimped by the connection terminals,
The electric compressor, wherein the center of the crushed portion of the tube member is offset with respect to the center of the portion of the tube member crimped by the connection terminal. 2. The electric compressor according to claim 1, further comprising resin filled between the inner peripheral surface of the opening of the terminal receiving hole and the outer peripheral surface of the tube member. an inner peripheral surface of the opening of the terminal receiving hole has an arcuate curved surface in a front view of the opening;
3. The electric compression according to claim 1 or 2, wherein the arc drawn by the curved surface is formed such that the distance between the curved surface and the tube member always becomes equal or shorter from one end to the other end. machine.

Images