JP2019178664A - Motor compressor - Google Patents

Abstract

To provide a motor compressor capable of avoiding a connection terminal from running out of a cluster block while securing the insulation quality.SOLUTION: The motor compressor includes a connector 40 stored in a motor housing and connecting a motor wiring 27 and a conductive member, the connector 40 including a connection terminal 50 electrically connecting the motor wiring 27 and the conductive member, and an insulation-quality cluster block 60 storing the connection terminal 50, the cluster block 60 including a case member 61 having a terminal insertion hole 63 into which the connection terminal 50 is inserted and a conductive member insertion hole into which the conductive member is inserted, and a cover member 71, the cover member 71 having a cover part 72 closing an opening of the terminal insertion hole 63, and an extension part 74 extending from the cover part 72 to the conductive member insertion hole. The extension part 74 abutment-regulates the movement of the connection terminal 50 to the opening of the terminal insertion hole 63 not to interrupt joint between the conductive member and the connection terminal 50.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an electric compressor.

  For example, as disclosed in Patent Document 1, an electric compressor includes an electric motor, a compression unit driven by the electric motor, a housing that houses the electric motor and the compression unit, and a motor drive that drives the electric motor. A circuit, a motor wiring drawn from the electric motor, a conductive member electrically connected to the motor drive circuit, and a connector that is housed in the housing and connects the motor wiring and the conductive member. The connector includes a connection terminal that electrically connects the motor wiring and the conductive member, and an insulating cluster block that accommodates the connection terminal. The cluster block includes a terminal insertion hole into which the connection terminal is inserted and a conductive member insertion hole into which the conductive member is inserted. The connection terminal includes a first connection portion that is electrically connected to the motor wiring, and a second connection portion that is electrically connected to the conductive member. When electric power is supplied from the motor drive circuit to the electric motor via the conductive member, the connection terminal, and the motor wiring, the electric motor is driven to drive the compression unit and the refrigerant is compressed by the compression unit. .

JP 2014-34918 A

  Incidentally, some cluster blocks have claws formed on the inner surface forming the terminal insertion holes. In the insertion direction of the connection terminal with respect to the terminal insertion hole, the claw, for example, comes into contact with the second connection portion, so that the connection terminal inserted into the terminal insertion hole does not move toward the opening. According to this, it can be avoided that the connection terminal moves toward the opening and comes out of the cluster block. When such a claw is formed integrally with the cluster block, a hole that communicates the inside of the terminal insertion hole and the outside of the cluster block may be formed in the cluster block in order to form the claw. In such a case, for example, before the operation of the electric compressor is started, if the housing is filled with liquid refrigerant containing oil, the liquid refrigerant containing oil enters the terminal insertion hole from the hole, When the electric compressor is operated, the connection terminal and the housing are in a conductive state via the liquid refrigerant containing oil, and there is a possibility that the insulation between the connection terminal and the housing cannot be secured.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an electric compressor capable of avoiding connection terminals from falling out of a cluster block while ensuring insulation.

An electric compressor for solving the above problems includes an electric motor, a compression unit driven by the electric motor, a housing that houses the electric motor and the compression unit, and a motor drive that drives the electric motor. A circuit, a motor wiring drawn from the electric motor, a conductive member electrically connected to the motor drive circuit, and a connector that is housed in the housing and connects the motor wiring and the conductive member. The connector is an electric compressor comprising: a connection terminal that electrically connects the motor wiring and the conductive member; and an insulating cluster block that accommodates the connection terminal, wherein the cluster block A terminal insertion hole into which the connection terminal is inserted, a case member having a conductive member insertion hole into which the conductive member is inserted, a lid member, The lid member includes a lid portion that closes an opening of the terminal insertion hole, and an extension portion that extends from the lid portion toward the conductive member insertion hole, and the extension portion includes: The gist is to restrict the movement of the connection terminal toward the opening of the terminal insertion hole, which prevents the connection between the conductive member and the connection terminal.

  The connection terminal may move toward the opening of the terminal insertion hole so as to prevent the connection between the conductive member and the connection terminal, but the extension portion of the lid member contacts the connection terminal, so that the terminal of the connection terminal Movement toward the opening of the insertion hole is restricted. For this reason, it can be avoided that the connection terminal comes off the cluster block. Therefore, for example, in order to form a claw like a cluster block having a claw that restricts movement toward the opening in the connection terminal on the inner surface forming the terminal insertion hole in the cluster block, the inside of the terminal insertion hole and the cluster A hole that communicates with the outside of the block is not formed in the cluster block. Therefore, the problem that the liquid refrigerant containing oil enters the terminal insertion hole from the hole for forming the claw can be solved. Therefore, it is possible to avoid the connection terminal from coming out of the cluster block while ensuring the insulation between the connection terminal and the housing.

  Moreover, about the said electric compressor, the said cover part has a motor wiring insertion part by which the said motor wiring is penetrated, and the said connector is a 1st end surface which is an end surface from which the said extension part in the said cover part extends. And an insulating cover member that covers the second end surface opposite to the motor wire and has a motor wiring passage portion through which the motor wiring is inserted, when viewed from the insertion direction with respect to the terminal insertion hole in the connection terminal, It is preferable that a part of the motor wiring passage part overlaps a part of the motor wiring insertion part, and a part of the motor wiring insertion part is closed by the cover member.

  According to this, since a part of the motor wiring insertion portion is blocked by the cover member, it becomes difficult for liquid refrigerant containing oil to enter the terminal insertion hole through the gap between the motor wiring insertion portion and the motor wiring. The insulation between the terminal and the housing can be enhanced.

  In the electric compressor, the lid member has a protruding portion protruding from the second end surface, the cover member has a protruding portion insertion hole through which the protruding portion is inserted, and the terminal insertion hole The inner peripheral surface of the protrusion surrounds the outer peripheral surface of the protruding portion, and the motor wiring is inserted into the motor wiring passage portion between the inner peripheral surface of the terminal insertion hole and the outer peripheral surface of the protruding portion. It is preferable that resin is filled between the inner peripheral surface of the terminal insertion hole and the outer peripheral surface of the protruding portion.

  According to this, since the resin is filled between the inner peripheral surface of the opening where the motor wiring passage portion is located and the outer peripheral surface of the protruding portion, the gap between the motor wiring passage portion and the motor wiring, and It becomes difficult for the liquid refrigerant containing oil to enter the terminal insertion hole through the gap between the motor wiring insertion portion and the motor wiring. Therefore, the insulation between a connection terminal and a housing can be improved more. Moreover, since the strength of the lid member is increased by the protruding portion, even if a load is applied from the connection terminal to the lid member, the lid member is hardly damaged.

  In the electric compressor, the motor wiring insertion portion is a groove recessed in the outer peripheral surface of the lid portion, and the motor wiring passage portion is recessed in the inner peripheral surface of the protruding portion insertion hole. A groove is preferred.

  According to this, compared with the case where a motor wiring insertion part and a motor wiring passage part are hole shape, for example, it is easy to arrange | position a motor wiring in a motor wiring insertion part and a motor wiring passage part. Therefore, the work time for inserting the motor wiring into the cover member and the cover member can be shortened, and the productivity of the electric compressor can be improved.

Moreover, about the said electric compressor, it is preferable that the said motor wiring insertion part and the said motor wiring passage part are hole shape.
According to this, for example, when the load from the motor wiring is applied to the motor wiring insertion portion and the motor wiring passage portion, compared with the case where the motor wiring insertion portion and the motor wiring passage portion are grooves, the motor wiring insertion portion And it can suppress that a crack enters into a lid part and a cover member of a lid member from a motor wiring passage part.

  In the electric compressor, the lid portion includes a motor wiring insertion portion through which the motor wiring is inserted, and the lid member is an end surface from which the extension portion of the lid portion extends. The motor wiring is inserted into the motor wiring insertion portion between an inner peripheral surface of the terminal insertion hole and an outer peripheral surface of the protruding portion. The protruding portion protrudes from the second end surface opposite to the end surface. It is preferable that resin is filled between the inner peripheral surface of the terminal insertion hole and the outer peripheral surface of the protruding portion.

  According to this, since resin is filled between the inner peripheral surface of the opening where the motor wiring passage portion is located and the outer peripheral surface of the protruding portion, the gap between the motor wiring insertion portion and the motor wiring is interposed. This makes it difficult for liquid refrigerant containing oil to enter the terminal insertion hole. Therefore, the insulation between a connection terminal and a housing can be improved more.

  According to the present invention, it is possible to avoid the connection terminals from coming out of the cluster block while ensuring insulation.

The sectional side view of the electric compressor of an embodiment. The exploded perspective view of a connector. Sectional drawing of a connector. The front view which shows a case member and a cover member. The front view which shows a case member, a cover member, and a cover member. The perspective view of a connector. The front view which shows another example of a connector.

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

  A rotating shaft 16 is accommodated in the motor housing 12. Further, the motor housing 12 accommodates a compression portion 17 that compresses the refrigerant and an electric motor 18 that drives the compression portion 17. The electric motor 18 drives the rotary shaft 16. The compression unit 17 is driven by the rotation of the rotating 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 portion 17.

  A shaft support member 19 is provided between the compression portion 17 and the electric motor 18 in the motor housing 12. An insertion hole 19 a through which one end of the rotating shaft 16 is inserted is formed at the center 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 rotating shaft 16 is rotatably supported by the shaft support member 19 via a radial bearing 16a.

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

  Further, the accommodation space S <b> 2 is partitioned by the bottom wall 121 of the motor housing 12 and the inverter cover 14. A motor drive circuit 20 (indicated by a two-dot chain line in FIG. 1) is attached to the outer surface of the bottom wall 121 in the accommodation space S2. Therefore, in this embodiment, the compression part 17, the electric motor 18, and the motor drive circuit 20 are arrange | positioned along with the direction (axial direction) where the axis line L of the rotating shaft 16 extends in this order.

  The compression unit 17 includes a fixed scroll 17a fixed in the motor housing 12, and a movable scroll 17b disposed to face the fixed scroll 17a. A compression chamber S3 whose volume can be changed is defined between the fixed scroll 17a and the movable scroll 17b.

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

  The rotor 21 has a rotor core 23 having a cylindrical shape, and the rotor core 23 is fixed to the rotary 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 a coil 26 provided on the stator core 25.

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

  Two motor wires 27 and two phase wires 28 are drawn from the first coil end 261 corresponding to the U-phase, V-phase, and W-phase coils 26. Therefore, the U-phase, V-phase, and W-phase coils 26 have a double-wire structure formed by winding two conductive 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 illustrated. Each motor wiring 27 and each phase wire 28 are drawn from the first coil end 261 in a state where the conductive wire of the coil 26 drawn from the first coil end 261 is covered with an insulating coating (tube).

A through hole 121 b is formed in the bottom wall 121 of the motor housing 12. An airtight terminal 30 is disposed in the through hole 121b. The hermetic terminal 30 has three conductive members 31 (only one is shown in FIG. 1) corresponding to the U-phase, V-phase, and W-phase coils 26. Each conductive member 31 is a cylindrical metal terminal extending linearly. Each conductive member 31 is inserted into the through hole 121b and one end thereof is electrically connected to the motor drive circuit 20 via the cable 20a. The other end of each conductive member 31 protrudes from the accommodation space S2 into the motor housing 12 through the through hole 121b. The hermetic terminal 30 has three insulating members 32 (only one is shown in FIG. 1) that fixes each conductive member 31 while being insulated from the bottom wall 121.

  A connector 40 is accommodated in the motor housing 12. The connector 40 connects the motor wiring 27 and the conductive member 31. 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 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 and a second connection portion 52 electrically connected to the conductive member 31. The first connection portion 51 extends linearly. The first connecting portion 51 is connected to the end portion of the motor wiring 27 where the insulating film is removed and the conductor of the coil 26 is exposed. Each connection terminal 50 has a caulking portion 53 for caulking each motor wiring 27. The caulking portion 53 is continuous with one end portion of the first connection portion 51. Each motor wiring 27 is mechanically connected to each connection terminal 50 by being caulked by a caulking portion 53.

  The second connection part 52 is a substantially long rectangular tube shape that is continuous with the other end part of the first connection part 51 and projects from the other end part of the first connection part 51 in a direction orthogonal to the direction in which the first connection part 51 extends. It is. The axial center direction of the second connection part 52 coincides with the direction in which the first connection part 51 extends. The longitudinal direction of the second connection part 52 coincides with the protruding direction from the other end of the first connection part 51.

The cluster block 60 includes a case member 61 and a lid member 71 assembled to the case member 61. The case member 61 has a flat square box shape.
As shown in FIG. 3, the case member 61 has three accommodating portions 62. Each connection terminal 50 is inserted into each housing portion 62. Each accommodating part 62 is a long square hole. The longitudinal direction of each accommodating portion 62 coincides with the longitudinal direction of the second connecting portion 52 of each connecting terminal 50, and the short direction of each accommodating portion 62 is in the short direction of the second connecting portion 52 of each connecting terminal 50. Match. The three accommodating portions 62 are arranged in a straight line in the short direction of the accommodating portion 62. Accordingly, the three connection terminals 50 respectively inserted into the three accommodating portions 62 are arranged in a straight line in the short direction of the second connection portion 52 in the cluster block 60.

  As shown in FIG. 3, circular end through holes 64 communicating with the respective accommodating portions 62 are formed in the end wall 61 a that forms one surface of the case member 61. Each through hole 64 is located inside the second connection portion 52 of each connection terminal 50 when viewed from the axial direction of each through hole 64. As shown in FIG. 2, three cylindrical guide portions 65 project from the outer surface of the end wall 61 a of the case member 61. The inner side of each guide portion 65 communicates with each through hole 64. The axial center of each guide part 65 and the axial center of each through-hole 64 are in agreement.

  The other end of each conductive member 31 is inserted into the inside of each guide portion 65 and the inside of the second connection portion 52 of each connection terminal 50 via each through hole 64. Thereby, each conductive member 31 and each connection terminal 50 are electrically connected. Therefore, as shown in FIG. 3, the inside of each guide portion 65 and each through hole 64 constitute a conductive member insertion hole 66 into which each conductive member 31 is inserted. Therefore, the case member 61 has a conductive member insertion hole 66.

Of the pair of flat surfaces forming the outer surface of the case member 61, one flat surface is the case member 61.
It is the curved surface 61b which curves in a concave shape toward the inside. The curved surface 61 b is a surface extending along the outer peripheral surface of the stator core 25. The connector 40 of the present embodiment is disposed in the motor housing 12 so that the curved surface 61b is along the outer peripheral surface of the stator core 25.

As shown in FIG. 2, the lid member 71 has a long square plate-like lid portion 72. The outer peripheral surface 72 a of the lid portion 72 extends along the inner peripheral surface 63 a of the terminal insertion hole 63.
As shown in FIG. 4, the lid member 71 closes the terminal insertion hole 63 by fitting the lid portion 72 to the inner peripheral surface 63 a of the terminal insertion hole 63. The lid portion 72 has six motor wiring insertion portions 73. Each motor wiring insertion portion 73 is a groove that is recessed in the outer peripheral surface 72 a of the lid portion 72. The six motor wiring insertion portions 73 are arranged in a straight line in the longitudinal direction of the lid portion 72.

  As shown in FIG. 2, the case member 61 has a terminal insertion hole 63 into which the three connection terminals 50 can be inserted into the case member 61. The terminal insertion hole 63 is a long rectangular hole that communicates with the three accommodating portions 62. The longitudinal direction of the terminal insertion hole 63 coincides with the short direction of each housing portion 62, and the short direction of the terminal insertion hole 63 coincides with the longitudinal direction of each housing portion 62. The terminal insertion hole 63 opens on one surface of the case member 61. Each connection terminal 50 is inserted into the case member 61 from the terminal insertion hole 63 so that the first connection portion 51 is located closer to the terminal insertion hole 63 than the second connection portion 52, and is accommodated in each accommodation portion 62. ing.

  Each motor wiring insertion portion 73 is formed on the outer peripheral surface 72 a of the lid portion 72 by notching one of the outer surfaces 721 a of the pair of outer surfaces along the longitudinal direction of the lid portion 72. Therefore, each motor wiring insertion part 73 is located on one side of the lid part 72 in the short direction. Moreover, as shown in FIG. 2, each motor wiring insertion part 73 has penetrated the cover part 72 in the thickness direction. Each motor wiring insertion portion 73 is inserted into an end portion of each motor wiring 27 where the insulating film is removed and the conductor of the coil 26 is exposed.

  As shown in FIG. 2, the lid member 71 has three extending portions 74. Each extending portion 74 has a rectangular column shape extending from the first end surface 72 b, which is an end surface of the lid portion 72 near the housing portion 62, toward each housing portion 62. The three extending portions 74 are arranged in a straight line in the longitudinal direction of the lid portion 72. Each extending portion 74 is separated from one side of the lid portion 72 in the short direction. Accordingly, each extending portion 74 is at a position shifted from each motor wiring insertion portion 73 in the short direction of the lid portion 72. Each extending portion 74 is tapered as it is separated from the lid portion 72. Each extending portion 74 is inserted into each accommodating portion 62 from the terminal insertion hole 63 side. Each extension portion 74 extends toward the second connection portion 52 of each connection terminal 50. The distal end portion 74 a of each extension portion 74 faces the second connection portion 52 of each connection terminal 50 in the direction extending from the first end surface 72 b of the lid portion 72. In the present embodiment, the leading end portion 74a of each extending portion 74 is opposed to the second connecting portion 52 of each connection terminal 50 in a direction extending from the first end surface 72b of the lid portion 72. However, the tip end portion 74 a of each extension portion 74 may face the second connection portion 52 of each connection terminal 50 in a state in which the tip end portion 74 a is extended from the first end surface 72 b of the lid portion 72.

  The lid member 71 has a projecting portion 75 projecting from a second end surface 72c opposite to the first end surface 72b from which each extending portion 74 in the lid portion 72 extends. The protruding portion 75 is separated from the entire outer peripheral surface 72 a of the lid portion 72. The protrusion 75 has a long quadrangular prism shape. The longitudinal direction of the protrusion 75 coincides with the longitudinal direction of the lid 72, and the short direction of the protrusion 75 coincides with the short direction of the lid 72.

The connector 40 further includes an insulating cover member 80. The cover member 80 is in the form of a long square plate in which the protruding portion insertion hole 81 is formed. The protruding portion insertion hole 81 penetrates the cover member 80 in the thickness direction. The protrusion 75 is inserted through the protrusion insertion hole 81. The cover member 80 of this embodiment is made of rubber. The dimension in the thickness direction of the cover member 80 is about half of the protruding amount of the protruding portion 75 from the second end surface 72 c of the lid portion 72. The protrusion insertion hole 81 has a long rectangular hole shape. The longitudinal direction of the protruding portion insertion hole 81 coincides with the longitudinal direction of the cover member 80, and the short direction of the protruding portion insertion hole 81 coincides with the short direction of the cover member 80. The dimension in the longitudinal direction of the protrusion insertion hole 81 is substantially the same as the dimension in the longitudinal direction of the protrusion 75, and the dimension in the short direction of the protrusion insertion hole 81 is substantially the same as the dimension in the short direction of the protrusion 75. The same.

  The outer shape of the cover member 80 matches the outer shape of the lid portion 72. The cover member 80 covers the second end surface 72 c of the lid portion 72. The lid 72 and the cover member 80 are press-fitted into the terminal insertion hole 63. The lid member 71 is assembled to the case member 61 by press-fitting the lid portion 72 and the cover member 80 into the terminal insertion hole 63.

  As shown in FIG. 5, the cover member 80 has six motor wiring passage portions 82. The six motor wiring passage portions 82 are grooves recessed in the inner peripheral surface 81 a of the protruding portion insertion hole 81. The six motor wiring passage portions 82 are arranged in a straight line in the longitudinal direction of the cover member 80. Each motor wiring passage portion 82 is formed on the inner peripheral surface 81 a of the protruding portion insertion hole 81 by notching one inner surface 811 a of the pair of inner surfaces along the longitudinal direction of the protruding portion insertion hole 81. Therefore, each motor wiring passage portion 82 is located on one side of the cover member 80 in the short direction. Each motor wiring passage part 82 penetrates the cover member 80 in the thickness direction. Each motor wiring passage portion 82 is inserted into an end portion of each motor wiring 27 where the insulating coating is removed and the conductor of the coil 26 is exposed.

  When viewed from the insertion direction of the connection terminal 50 with respect to the accommodating portion 62, a part of each motor wiring passage portion 82 overlaps a part of each motor wiring insertion portion 73. Each motor wiring 27 is inserted into a part of each motor wiring passage part 82 and a part of each motor wiring insertion part 73 that overlap each other when viewed from the insertion direction of the connection terminal 50. Further, when viewed from the insertion direction of the connection terminal 50 with respect to the housing portion 62, a part of each motor wiring insertion portion 73 is closed by the cover member 80.

  The inner peripheral surface 63 a of the terminal insertion hole 63 surrounds the outer peripheral surface 75 a of the protruding portion 75. Each motor wiring passage portion 82 is located between the inner peripheral surface 63 a of the terminal insertion hole 63 and the outer peripheral surface 75 a of the protruding portion 75.

  The cover member 80 is formed with a circular hole-shaped wire bundle insertion portion 83 through which a phase wire bundle 29 in which the phase wires 28 corresponding to the U-phase, V-phase, and W-phase coils 26 are bundled is inserted. The phase wire bundle insertion portion 83 penetrates the cover member 80 in the thickness direction. The phase wire bundle insertion portion 83 is located between the inner peripheral surface 63 a of the terminal insertion hole 63 and the outer peripheral surface 75 a of the protruding portion 75.

  As shown in FIG. 4, the second end face 72 c of the lid portion 72 is formed with a circular hole-like phase wire bundle insertion recess 76 into which the connection connection portion 29 a (neutral point) of the phase wire bundle 29 is inserted. The phase wire bundle insertion recess 76 communicates with the phase wire bundle insertion portion 83.

  As shown in FIG. 6, a resin 90 is filled between the inner peripheral surface 63 a of the terminal insertion hole 63 and the outer peripheral surface 75 a of the protruding portion 75. The resin 90 is, for example, an adhesive. The resin 90 seals between the inner peripheral surface 63a of the terminal insertion hole 63 and the outer peripheral surface 75a of the protruding portion 75, and the inner peripheral surface 63a of the terminal insertion hole 63 and the outer peripheral surface 75a of the protruding portion 75 Are bonded via a resin 90.

In the electric compressor 10 having the above configuration, when electric power is supplied from the motor drive circuit 20 to the electric motor 18 via the cables 20 a, the conductive members 31, the connection terminals 50, and the motor wires 27, the electric motor 18. The compressor 17 is driven by the rotation of the rotary shaft 16 as the electric motor 18 is driven, and the refrigerant is compressed by the compressor 17.

Next, the effect of this embodiment will be described together with the action.
(1) Each connection terminal 50 may move toward the opening of the terminal insertion hole 63 so as to prevent the connection between each conductive member 31 and each connection terminal 50. On the other hand, in the present embodiment, the distal end portion 74 a of each extending portion 74 of the lid member 71 abuts on the second connecting portion 52 of each connecting terminal 50, thereby opening the terminal insertion hole 63 of the connecting terminal 50. Movement toward is restricted. For this reason, it can be avoided that each connection terminal 50 comes off the cluster block 60. Therefore, for example, to form a claw like a cluster block having a claw that restricts movement toward the opening in the connection terminal on the inner surface forming the terminal insertion hole in the cluster block, the inside of the terminal insertion hole and Holes communicating with the outside of the cluster block are not formed in the cluster block. Therefore, there is a problem that the liquid refrigerant containing the oil filled in the motor housing 12 enters the housing portion 62 from the hole for molding the claw, for example, before the operation of the electric compressor 10 is started. Can be eliminated. For this reason, it can suppress that each connection terminal 50 and the motor housing 12 (housing 11) will be in a conduction | electrical_connection state via the liquid refrigerant containing oil. Therefore, it is possible to avoid the connection terminals 50 from coming out of the cluster block 60 while ensuring the insulation between the connection terminals 50 and the housing 11.

  (2) Since a part of each motor wiring insertion portion 73 is blocked by the cover member 80, the liquid refrigerant containing oil enters each accommodating portion 62 from the gap between each motor wiring insertion portion 73 and each motor wiring 27. It becomes difficult to enter, and the insulation between each connection terminal 50 and the housing 11 can be enhanced.

  (3) Since the resin 90 is filled between the inner peripheral surface 63a of the terminal insertion hole 63 where each motor wiring passage 82 is located and the outer peripheral surface 75a of the protrusion 75, each motor wiring passage 82 And the liquid refrigerant containing oil through the gaps between the motor wires 27 and the gaps between the motor wire insertion portions 73 and the motor wires 27 are less likely to enter the accommodating portions 62. Therefore, the insulation between each connection terminal 50 and the housing 11 can be further enhanced. Further, since the strength of the lid member 71 is increased by the protrusion 75, the lid member 71 is not easily damaged even if a load is applied to the lid member 71 from each connection terminal 50.

  (4) Each motor wiring insertion portion 73 is a groove recessed in the outer peripheral surface 72 a of the lid portion 72, and each motor wiring passage portion 82 is recessed in the inner peripheral surface 81 a of the protruding portion insertion hole 81. It is a groove. According to this, for example, compared with the case where each motor wiring insertion part 73 and each motor wiring passage part 82 are hole-shaped, each motor wiring 27 is connected to each motor wiring insertion part 73 and each motor wiring passage part 82, respectively. Easy to place. Therefore, the work time for inserting the motor wires 27 into the cover member 71 and the cover member 80 can be shortened, and the productivity of the electric compressor 10 can be improved.

  (5) Since a part of each motor wiring insertion portion 73 is closed by the cover member 80, the resin 90 filled between the inner peripheral surface 63 a of the terminal insertion hole 63 and the outer peripheral surface 75 a of the protruding portion 75 is filled. In addition, it becomes difficult to enter the accommodating portions 62 from the gaps between the motor wiring insertion portions 73 and the motor wirings 27. Therefore, it is possible to prevent the resin 90 from entering the housing portions 62 and attaching the resin 90 to the connection terminals 50. As a result, it is possible to prevent the resin 90 adhering to each connection terminal 50 from becoming a foreign substance and causing a connection failure between each conductive member 31 and the second connection portion 52.

In addition, you may change the said embodiment as follows.
In the cluster block 60, the connection terminals 50 do not have to be arranged in a straight line in the short direction of the second connection portion 52. The arrangement mode of the connection terminals 50 in the cluster block 60 is appropriately determined. You may change it.

  In the case member 61, the three accommodating portions 62 may be one undivided space. In this case, the accommodating portion 62 and the terminal insertion hole 63 are integrated, and the three connection terminals 50 are accommodated in a space in which the accommodating portion 62 and the terminal insertion hole 63 are integrated.

The lid member 71 may have a configuration in which the protruding portion 75 is omitted.
The conductive member insertion hole 66 may be formed on the other flat surface on the side opposite to the curved surface 61b among the pair of flat surfaces forming the outer surface of the case member 61. Further, the axial center direction of the second connection portion 52 may be orthogonal to the direction in which the first connection portion 51 extends. The longitudinal direction of the second connection part 52 coincides with the direction in which the first connection part 51 extends. In this case, the insertion direction of the conductive member 31 with respect to the second connection portion 52 of the connection terminal 50 is orthogonal to the direction in which the first connection portion 51 extends.

  The connector 40 may have a configuration in which the cover member 80 is omitted. In the configuration in which the cover member 80 is omitted, the resin 90 may be filled between the inner peripheral surface 63a of the terminal insertion hole 63 and the outer peripheral surface 75a of the protrusion 75. In this case, it becomes difficult for the liquid refrigerant containing oil to enter the housing portions 62 through the gaps between the motor wire insertion portions 73 and the motor wires 27. Therefore, the insulation between each connection terminal 50 and the housing 11 can be further enhanced.

The cover member 80 may not be made of rubber as long as it is an insulating material, and may be made of resin, for example.
The resin 90 may not be filled between the inner peripheral surface 63a of the terminal insertion hole 63 and the outer peripheral surface 75a of the protrusion 75.

  O The assembly method of the case member 61 and the lid member 71 is not limited to press-fitting. For example, the case member 61 and the lid member 71 are engaged by engaging a claw portion formed on the lid portion 72 of the lid member 71 with a hole portion formed on the inner peripheral surface 63 a of the terminal insertion hole 63 of the case member 61. And may be assembled.

  The phase wire bundle insertion recess 76 of the lid member 71 and the phase wire bundle insertion portion 83 of the cover member 80 may be omitted. In this case, an insulating cap is attached to the connection connection portion 29 a of the phase wire bundle 29.

The shape of each motor wiring insertion portion 73 and the shape of each motor wiring passage portion 82 are not limited to grooves, and may be changed as appropriate.
For example, as shown in FIG. 7, each motor wiring insertion portion 73 may have a hole shape that penetrates the lid portion 72 in the thickness direction. Each motor wiring passage portion 82 may have a hole shape that penetrates the cover member 80 in the thickness direction. In the embodiment shown in FIG. 7, each motor wiring insertion part 73 and each motor wiring passage part 82 are circular holes. When viewed from the insertion direction of the connecting terminal 50 with respect to the accommodating portion 62, a part of each motor wiring passage 82 is overlapped with a part of each motor wiring insertion portion 73, and a part of each motor wiring insertion portion 73. Is closed by the cover member 80.

  According to this, for example, compared with the case where each motor wiring insertion part 73 and each motor wiring passage part 82 is a groove, the load from each motor wiring 27 receives each motor wiring insertion part 73 and each motor wiring passage part 82. It is possible to prevent the cover 72 and the cover member 80 of the cover member 71 from being cracked from the motor wiring insertion portions 73 and the motor wiring passage portions 82 when added. In the embodiment shown in FIG. 7, each motor wiring insertion portion 73 and each motor wiring passage portion 82 may have a square hole shape, for example.

Although not shown, when the cover member 80 is made of an elastically deformable material, each motor wiring passage portion 82 may be formed by cutting the inner peripheral surface 81 a that forms the protruding portion insertion hole 81. .

In the lid member 71, two motor wires 27 may be inserted into one motor wire insertion portion 73.
In the cover member 80, two motor wires 27 may be inserted through one motor wire passage portion 82.

○ The number of phases of the coil 26 may be changed.
The number of conducting wires that form the coil 26 may be one, or three or more.
The number of motor wiring insertion portions 73 of the lid member 71 may be appropriately changed according to the number of phases of the coil 26 and the number of conductive wires forming the coil 26.

The number of extending portions 74 of the lid member 71 may be changed according to the number of phases of the coil 26.
The number of the accommodating parts 62 of the case member 61 may be changed according to the number of phases of the coil 26.
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.

The number of motor wiring passage portions 82 of the cover member 80 may be appropriately changed according to the number of phases of the coil 26 and the number of conductive wires forming the coil 26.
The tip part 74a of each extension part 74 of the lid member 71 may face the first connection part 51 of each connection terminal 50 in the direction extending from the first end surface 72b of the lid part 72, for example. In short, the distal end portion 74a of each extending portion 74 of the lid member 71 may be opposed to at least a part of each connection terminal 50 in the direction extending from the first end surface 72b of the lid portion 72.

Each extension part 74 of the lid member 71 may abut and restrict the movement of the connection terminal 50 toward the terminal insertion hole 63 by a part other than the tip part 74a.
Each motor wiring 27 may be inserted through each motor wiring insertion portion 73 at a portion where the conductive wire of the coil 26 is covered with an insulating film.

Each motor wiring 27 may be inserted into each motor wiring passage 82 at a portion where the conductive wire of the coil 26 is covered with an insulating film.
The two motor wires 27 for each phase may be covered with an insulating tube member. The motor wiring 27 is inserted into a part of each motor wiring passage part 82 and a part of each motor wiring insertion part 73 that overlap each other when viewed from the insertion direction of the connection terminal 50 in a state covered with the tube member. May be.

  (Circle) not only the type comprised by the fixed scroll 17a and the movable scroll 17b, but the compression part 17 may be changed into a piston type, a vane type, etc., for example.

  DESCRIPTION OF SYMBOLS 10 ... Electric compressor, 11 ... Housing, 17 ... Compression part, 18 ... Electric motor, 20 ... Motor drive circuit, 27 ... Motor wiring, 31 ... Conductive member, 40 ... Connector, 50 ... Connection terminal, 60 ... Cluster block, 61 ... Case member, 63 ... Terminal insertion hole, 63a ... inner peripheral surface, 66 ... conductive member insertion hole, 71 ... lid member, 72 ... lid portion, 72a ... outer peripheral surface, 72b ... first end surface, 72c ... second end surface 73 ... Motor wiring insertion part, 74 ... Extension part, 75 ... Projection part, 75a ... Outer peripheral surface, 80 ... Cover member, 81 ... Projection part insertion hole, 81a ... Inner peripheral surface, 82 ... Motor wiring passage part, 90 …resin.

Claims (6)

An electric motor;
A compression unit driven by the electric motor;
A housing that houses the electric motor and the compression unit;
A motor drive circuit for driving the electric motor;
Motor wiring drawn from the electric motor;
A conductive member electrically connected to the motor drive circuit;
A connector that is housed in the housing and connects the motor wiring and the conductive member;
With
The connector is
A connection terminal for electrically connecting the motor wiring and the conductive member;
An insulating cluster block that accommodates the connection terminals;
An electric compressor comprising:
The cluster block is
A case member having a terminal insertion hole into which the connection terminal is inserted, and a conductive member insertion hole into which the conductive member is inserted;
A lid member,
The lid member has a lid portion that closes the opening of the terminal insertion hole, and an extension portion that extends from the lid portion toward the conductive member insertion hole,
The extension part abuts and restricts movement of the connection terminal toward the opening of the terminal insertion hole, which prevents the connection between the conductive member and the connection terminal. The lid has a motor wiring insertion part through which the motor wiring is inserted,
The connector covers a second end surface opposite to the first end surface, which is an end surface from which the extending portion of the lid extends, and has an insulating property having a motor wiring passage portion through which the motor wiring is inserted. A cover member,
When viewed from the insertion direction of the connection terminal with respect to the terminal insertion hole, a part of the motor wiring passage part overlaps a part of the motor wiring insertion part, and a part of the motor wiring insertion part is the cover member. The electric compressor according to claim 1, wherein the electric compressor is closed. The lid member has a protruding portion protruding from the second end surface,
The cover member has a protrusion insertion hole through which the protrusion is inserted,
The inner peripheral surface of the terminal insertion hole surrounds the outer peripheral surface of the protrusion,
The motor wiring is inserted through the motor wiring passage portion between the inner peripheral surface of the terminal insertion hole and the outer peripheral surface of the protruding portion,
The electric compressor according to claim 2, wherein a resin is filled between an inner peripheral surface of the terminal insertion hole and an outer peripheral surface of the protruding portion. The motor wiring insertion part is a groove recessed in the outer peripheral surface of the lid part,
The electric compressor according to claim 3, wherein the motor wiring passage portion is a groove that is recessed in an inner peripheral surface of the protrusion insertion hole.   The electric compressor according to claim 2, wherein the motor wiring insertion portion and the motor wiring passage portion are hole-shaped. The lid has a motor wiring insertion part through which the motor wiring is inserted,
The lid member has a protruding portion that protrudes from a second end surface opposite to the first end surface, which is an end surface from which the extending portion of the lid extends.
The motor wiring is inserted into the motor wiring insertion portion between the inner peripheral surface of the terminal insertion hole and the outer peripheral surface of the protruding portion,
The electric compressor according to claim 1, wherein a resin is filled between an inner peripheral surface of the terminal insertion hole and an outer peripheral surface of the protruding portion.