JP6977653B2 - Electric compressor - Google Patents

Description

The present invention relates to an electric compressor.

For example, as disclosed in Patent Document 1, the electric compressor includes an electric motor, a compression unit driven by the electric motor, a housing accommodating the electric motor and the compression unit, and a motor drive for driving the electric motor. It includes a circuit, a motor wiring drawn from an electric motor, a conductive member electrically connected to the motor drive circuit, and a connector housed in a housing and connecting 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 houses the connection terminal. The cluster block includes a terminal insertion hole into which a connection terminal is inserted and a conductive member insertion hole into which a conductive member is inserted. The connection terminal has 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. Then, 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 compress the refrigerant by the compression unit. ..

Japanese Unexamined Patent Publication No. 2014-34918

By the way, some cluster blocks have claws formed on the inner surface forming the terminal insertion hole. In the insertion direction of the connection terminal with respect to the terminal insertion hole, the claw abuts on, for example, 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 is possible to prevent the connection terminal from moving toward the opening and coming out of the cluster block. When such a claw is integrally formed with the cluster block, a hole in which the inside of the terminal insertion hole and the outside of the cluster block communicate with each other may be formed in the cluster block in order to form the claw. In such a case, if the inside of the housing is filled with the liquid refrigerant containing oil, for example, before the start of operation of the electric compressor, the liquid refrigerant containing oil invades from the hole into the terminal insertion hole. When the electric compressor is operated, the connection terminal and the housing may become conductive via the liquid refrigerant containing oil, and the insulation between the connection terminal and the housing may not be ensured.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an electric compressor capable of preventing the connection terminals from coming off the cluster block while ensuring insulation.

The electric compressor for solving the above problems includes an electric motor, a compression unit driven by the electric motor, a housing accommodating the electric motor and the compression unit, and a motor drive for driving 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 housed in the housing and connecting the motor wiring and the conductive member. The connector is an electric compressor including a connection terminal for electrically connecting the motor wiring and the conductive member, and an insulating cluster block for accommodating the connection terminal, and the cluster block. The present invention includes a case member having a terminal insertion hole into which the connection terminal is inserted, a conductive member insertion hole into which the conductive member is inserted, and a lid member, and the lid member has an opening of the terminal insertion hole. The connection has a lid portion to be closed and an extension portion extending from the lid portion toward the conductive member insertion hole, and the extension portion prevents the connection between the conductive member and the connection terminal. The gist is to restrict the movement of the terminal toward the opening of the terminal insertion hole.

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. However, when the extending portion of the lid member abuts on the connection terminal, the terminal of the connection terminal Movement towards the opening of the insertion hole is restricted. Therefore, it is possible to prevent the connection terminal from coming off the cluster block. Thus, for example, a cluster with the inside of a terminal insertion hole to form a claw, such as a cluster block having a claw on the inner surface forming the terminal insertion hole in the cluster block that regulates movement toward the opening in the connection terminal. A hole that communicates with the outside of the block is not formed in the cluster block. Therefore, it is possible to solve the problem that the liquid refrigerant containing oil invades the terminal insertion hole through the hole for molding the nail. Therefore, it is possible to prevent the connection terminal from coming off the cluster block while ensuring the insulation between the connection terminal and the housing.

Further, with respect to the electric compressor, the lid portion has a motor wiring insertion portion through which the motor wiring is inserted, and the connector is a first end surface which is an end surface on which the extension portion of the lid portion extends. Further provided with an insulating cover member having a motor wiring passage portion through which the motor wiring is inserted while covering the second end surface on the opposite side to the above, when viewed from the insertion direction of the connection terminal with respect to the terminal insertion hole. It is preferable that a part of the motor wiring passage portion overlaps with a part of the motor wiring insertion portion, and a part of the motor wiring insertion portion is closed by the cover member.

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

Further, with respect to the electric compressor, the lid member has a protruding portion protruding from the second end surface, and 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 passing portion between the inner peripheral surface of the terminal insertion hole and the outer peripheral surface of the protruding portion. It is preferable that a 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 passing portion is located and the outer peripheral surface of the protruding portion, the gap between the motor wiring passing portion and the motor wiring and the gap between the motor wiring and the motor wiring are formed. Liquid refrigerant containing oil is less likely to enter the terminal insertion hole through the gap between the motor wiring insertion portion and the motor wiring. Therefore, the insulation between the connection terminal and the housing can be further improved. Further, since the strength of the lid member is increased by the protruding portion, the lid member is less likely to be damaged even if a load is applied to the lid member from the connection terminal.

Further, regarding 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 protrusion insertion hole. It is preferably a groove.

According to this, for example, as compared with the case where the motor wiring insertion portion and the motor wiring passage portion are hole-shaped, it is easier to arrange the motor wiring in each of the motor wiring insertion portion and the motor wiring passage portion. Therefore, the work time for inserting the motor wiring through the lid member and the cover member can be shortened, and the productivity of the electric compressor can be improved.

Further, in the electric compressor, it is preferable that the motor wiring insertion portion and the motor wiring passage portion are hole-shaped.
According to this, for example, as compared with the case where the motor wiring insertion portion and the motor wiring passage portion are grooves, when the load from the motor wiring is applied to the motor wiring insertion portion and the motor wiring passage portion, the motor wiring insertion portion In addition, it is possible to prevent cracks from entering the lid portion and the cover member of the lid member from the motor wiring passage portion.

Further, regarding the electric compressor, the lid portion has a motor wiring insertion portion through which the motor wiring is inserted, and the lid member is a first end face on which the extension portion of the lid portion extends. It has a protruding portion protruding from the second end surface on the opposite side of the end surface, and 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. It is preferable that a 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 passing portion is located and the outer peripheral surface of the protruding portion, the resin is filled through the gap between the motor wiring insertion portion and the motor wiring. It becomes difficult for the liquid refrigerant containing oil to enter the terminal insertion hole. Therefore, the insulation between the connection terminal and the housing can be further improved.

According to the present invention, it is possible to prevent the connection terminal from coming off the cluster block while ensuring the insulating property.

A side sectional view of the electric compressor of the embodiment. An exploded perspective view of the connector. Sectional view of the connector. The front view which shows the case member and a lid member. The front view which shows the case member, a lid member, and a cover member. Perspective view of the connector. Front view showing another example of the connector.

Hereinafter, an embodiment embodying an electric compressor will be described with reference to FIGS. 1 to 6.
As shown in FIG. 1, the housing 11 of the electric compressor 10 is connected to a bottomed cylindrical motor housing 12 having an opening 12a formed at one end (left end of FIG. 1) and one end of the motor housing 12. It has a discharge housing 13 having a bottomed tubular shape. A bottomed cylindrical inverter cover 14 is attached to the bottom wall 121 of the motor housing 12. A discharge chamber S1 is partitioned between the motor housing 12 and the discharge housing 13. A discharge port 15 is formed on the bottom wall of the discharge housing 13, and an external refrigerant circuit (not shown) is connected to the discharge port 15. A suction port (not shown) is formed on the peripheral wall 122 of the motor housing 12, and an external refrigerant circuit is connected to the suction port.

A rotating shaft 16 is housed in the motor housing 12. Further, a compression unit 17 for compressing the refrigerant and an electric motor 18 for driving the compression unit 17 are housed in the motor housing 12. The electric motor 18 drives the rotary shaft 16. The compression unit 17 is driven by the rotation of the rotation 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.

In the motor housing 12, a shaft support member 19 is provided between the compression unit 17 and the electric motor 18. An insertion hole 19a through which one end of the rotating shaft 16 is inserted is formed in the central portion of the shaft support member 19. A radial bearing 16a is provided between the insertion hole 19a 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 the radial bearing 16a.

A bearing portion 121a 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 portion 121a. A radial bearing 16b is provided between the bearing portion 121a and the other end of the rotating shaft 16. The other end of the rotating shaft 16 is rotatably supported by the bearing portion 121a via the radial bearing 16b.

Further, the accommodation space S2 is partitioned by the bottom wall 121 of the motor housing 12 and the inverter cover 14. In the accommodation space S2, a motor drive circuit 20 (indicated by a two-dot chain line in FIG. 1) is attached to the outer surface of the bottom wall 121. Therefore, in the present embodiment, the compression unit 17, the electric motor 18, and the motor drive circuit 20 are arranged side by side in this order along the extending direction (axial direction) of the axis L of the rotating shaft 16.

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

The electric motor 18 is composed of a rotor 21 (rotor) that rotates integrally with the rotating 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. There is.

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

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

From the first coil end 261, two motor wirings 27 and two phase wires 28 are drawn out 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 conducting wires in order to reduce the voltage. Note that FIG. 1 illustrates only, for example, two U-phase motor wirings 27 and two U-phase phase wires 28. Each motor wiring 27 and each phase wire 28 are drawn from the first coil end 261 in a state where the lead wire of the coil 26 drawn from the first coil end 261 is covered with an insulating coating (tube).

A through hole 121b is formed in the bottom wall 121 of the motor housing 12. An airtight terminal 30 is provided in the through hole 121b. The airtight 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 columnar metal terminal extending linearly. Each conductive member 31 is inserted through a through hole 121b and one end thereof is electrically connected to a motor drive circuit 20 via a cable 20a. The other end of each conductive member 31 projects from the accommodation space S2 into the motor housing 12 via the through hole 121b. Further, the airtight terminal 30 has three insulating members 32 made of glass (only one is shown in FIG. 1) to insulate and fix each conductive member 31 to the bottom wall 121.

The connector 40 is housed in the motor housing 12. The connector 40 connects the motor wiring 27 and the conductive member 31. 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 accommodating the three connection terminals 50. ing.

Each connection terminal 50 has a first connection portion 51 that is electrically connected to the motor wiring 27 and a second connection portion 52 that is electrically connected to the conductive member 31. The first connecting portion 51 extends linearly. A portion of the end of the motor wiring 27 from which the insulating coating is removed and the conductor of the coil 26 is exposed is connected to the first connection portion 51. Further, each connection terminal 50 has a caulking portion 53 that crimps each motor wiring 27. The caulking portion 53 is continuous with one end of the first connecting portion 51. Each motor wiring 27 is mechanically connected to each connection terminal 50 by being crimped by the caulking portion 53.

The second connecting portion 52 has a substantially long square cylinder shape that is continuous with the other end of the first connecting portion 51 and projects in a direction orthogonal to the direction in which the first connecting portion 51 extends from the other end of the first connecting portion 51. Is. The axial direction of the second connecting portion 52 coincides with the direction in which the first connecting portion 51 extends. The longitudinal direction of the second connecting portion 52 coincides with the protruding direction from the other end of the first connecting portion 51.

The cluster block 60 includes a case member 61 and a lid member 71 attached 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 accommodating portion 62. Each accommodating portion 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 connection terminal 50, and the lateral direction of each accommodating portion 62 is the lateral 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 lateral direction of the accommodating portion 62. Therefore, the three connection terminals 50 inserted into the three accommodating portions 62 are arranged side by side in a straight line in the cluster block 60 in the lateral direction of the second connection portion 52.

As shown in FIG. 3, the end wall 61a forming one surface of the case member 61 is formed with a circular hole-shaped through hole 64 communicating with each accommodating portion 62. 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. Further, as shown in FIG. 2, three cylindrical guide portions 65 are projected on the outer surface of the end wall 61a of the case member 61. The inside of each guide portion 65 communicates with each through hole 64. The axis of each guide portion 65 coincides with the axis of each through hole 64.

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. As a result, 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.

One of the pair of eccentric planes forming the outer surface of the case member 61 is the eccentric plane of the case member 61.
It is a curved surface 61b that curves concavely toward the inside of the. The curved surface 61b is a surface extending along the outer peripheral surface of the stator core 25. The connector 40 of the present embodiment is arranged 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-shaped lid portion 72. The outer peripheral surface 72a of the lid portion 72 extends along the inner peripheral surface 63a 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 63a 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 recessed in the outer peripheral surface 72a 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 three connection terminals 50 can be inserted inside the case member 61. The terminal insertion hole 63 is a long square hole that communicates with the three accommodating portions 62. The longitudinal direction of the terminal insertion hole 63 coincides with the lateral direction of each accommodating portion 62, and the lateral direction of the terminal insertion hole 63 coincides with the longitudinal direction of each accommodating portion 62. The terminal insertion hole 63 is open 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 by cutting out one outer surface 721a of a pair of outer surfaces along the longitudinal direction of the lid portion 72 on the outer peripheral surface 72a of the lid portion 72. Therefore, each motor wiring insertion portion 73 is located on one side of the lid portion 72 in the lateral direction. Further, as shown in FIG. 2, each motor wiring insertion portion 73 penetrates the lid portion 72 in the thickness direction. A portion of the end of each motor wiring 27 from which the insulating coating is removed and the conductor of the coil 26 is exposed is inserted into each motor wiring insertion portion 73.

As shown in FIG. 2, the lid member 71 has three extending portions 74. Each extending portion 74 is a square columnar shape extending from the first end surface 72b, which is the end surface of the lid portion 72 toward the accommodating portion 62, toward each accommodating portion 62. The three extending portions 74 are arranged in a straight line in the longitudinal direction of the lid portion 72. Each of the extending portions 74 is separated from one of the lateral portions of the lid portion 72. Therefore, each extension portion 74 is located at a position deviated from each motor wiring insertion portion 73 in the lateral 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 74 extends toward a second connection 52 of each connection terminal 50. The tip portion 74a of each extending portion 74 faces 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. In the present embodiment, the tip portion 74a of each extension portion 74 faces the second connection 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 portion 74a of each extending portion 74 may face the second connecting portion 52 of each connecting terminal 50 in a direction extending from the first end surface 72b of the lid portion 72 in a state of being separated from each other.

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

The connector 40 further includes an insulating cover member 80. The cover member 80 has a long square plate shape in which a protrusion insertion hole 81 is formed. The protrusion insertion hole 81 penetrates the cover member 80 in the thickness direction. The protrusion 75 is inserted into the protrusion insertion hole 81. The cover member 80 of this embodiment is made of rubber. The dimension of the cover member 80 in the thickness direction is about half the amount of protrusion of the protrusion 75 from the second end surface 72c of the lid 72. The protrusion insertion hole 81 has a long square hole shape. The longitudinal direction of the protrusion insertion hole 81 coincides with the longitudinal direction of the cover member 80, and the lateral direction of the protrusion insertion hole 81 coincides with the lateral direction of the cover member 80. The longitudinal dimension of the protrusion insertion hole 81 is substantially the same as the longitudinal dimension of the protrusion 75, and the lateral dimension of the protrusion insertion hole 81 is substantially the same as the lateral dimension of the protrusion 75. It is 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 72c of the lid portion 72. The lid portion 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 81a of the protrusion insertion hole 81. The six motor wiring passing 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 by cutting out one inner surface 811a of a pair of inner surfaces along the longitudinal direction of the protrusion insertion hole 81 on the inner peripheral surface 81a of the protrusion insertion hole 81. Therefore, each motor wiring passing portion 82 is located on one side of the cover member 80 in the lateral direction. Each motor wiring passing portion 82 penetrates the cover member 80 in the thickness direction. A portion of the end of each motor wiring 27 from which the insulating coating is removed and the conductor of the coil 26 is exposed is inserted into each motor wiring passing portion 82.

When viewed from the insertion direction of the connection terminal 50 with respect to the accommodating portion 62, a part of each motor wiring passing portion 82 overlaps with a part of each motor wiring insertion portion 73. Each motor wiring 27 is inserted into a part of each motor wiring passing portion 82 and a part of each motor wiring insertion portion 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 accommodating portion 62, a part of each motor wiring insertion portion 73 is blocked by the cover member 80.

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

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

As shown in FIG. 4, the second end surface 72c of the lid portion 72 is formed with a circular hole-shaped phase wire bundle insertion recess 76 into which the connection connection portion 29a (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, the resin 90 is filled between the inner peripheral surface 63a of the terminal insertion hole 63 and the outer peripheral surface 75a of the protruding portion 75. The resin 90 is, for example, an adhesive. Then, 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. Is adhered via the resin 90.

In the electric compressor 10 having the above configuration, when power is supplied from the motor drive circuit 20 to the electric motor 18 via each cable 20a, each conductive member 31, 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 unit 17, and the refrigerant is compressed by the compression unit 17.

Next, the effects of this embodiment will be described together with the actions.
(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 tip portion 74a 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 towards is restricted. Therefore, it is possible to prevent each connection terminal 50 from coming off the cluster block 60. Thus, for example, the inside of the terminal insertion hole for forming the claw, such as a cluster block having a claw that regulates the movement toward the opening in the connection terminal on the inner surface forming the terminal insertion hole in the cluster block. A hole that communicates with the outside of the cluster block is not formed in the cluster block. Therefore, there is a problem that the liquid refrigerant containing the oil filled in the motor housing 12 invades into the accommodating portion 62 from the hole for forming the claw, for example, before the start of operation of the electric compressor 10. Can be resolved. Therefore, it is possible to prevent the connection terminals 50 and the motor housing 12 (housing 11) from becoming conductive via the liquid refrigerant containing oil. Therefore, it is possible to prevent each connection terminal 50 from coming off from the cluster block 60 while ensuring the insulation between each connection terminal 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 accommodation portion 62 through the gap between each motor wiring insertion portion 73 and each motor wiring 27. It becomes difficult to invade, and the insulation between each connection terminal 50 and the housing 11 can be improved.

(3) Since the resin 90 is filled between the inner peripheral surface 63a of the terminal insertion hole 63 where each motor wiring passing portion 82 is located and the outer peripheral surface 75a of the protruding portion 75, each motor wiring passing portion 82 The liquid refrigerant containing oil is less likely to enter the accommodation portion 62 through the gap between the motor wiring 27 and the motor wiring insertion portion 73 and the gap between the motor wiring insertion portion 73 and the motor wiring 27. Therefore, the insulation between each connection terminal 50 and the housing 11 can be further improved. Further, since the strength of the lid member 71 is increased by the protruding portion 75, the lid member 71 is less likely to be 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 72a of the lid portion 72, and each motor wiring passage portion 82 is recessed in the inner peripheral surface 81a of the protrusion insertion hole 81. It is a groove. According to this, for example, as compared with the case where each motor wiring insertion portion 73 and each motor wiring passage portion 82 have a hole shape, each motor wiring 27 is provided to each motor wiring insertion portion 73 and each motor wiring passage portion 82, respectively. Easy to place. Therefore, the work time for inserting each motor wiring 27 into the lid 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 blocked by the cover member 80, the resin 90 filled between the inner peripheral surface 63a of the terminal insertion hole 63 and the outer peripheral surface 75a of the protruding portion 75 is filled. , It becomes difficult to invade into each accommodating portion 62 through the gap between each motor wiring insertion portion 73 and each motor wiring 27. Therefore, it is possible to prevent the resin 90 from invading into each accommodating portion 62 and adhering the resin 90 to each connection terminal 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.

The above embodiment may be modified as follows.
○ In the cluster block 60, the connection terminals 50 may not be arranged side by side in a straight line in the lateral direction of the second connection portion 52, and the arrangement mode of the connection terminals 50 in the cluster block 60 is appropriate. You may change it.

○ In the case member 61, the three accommodating portions 62 may be one space that is not divided. In this case, the accommodating portion 62 and the terminal insertion hole 63 are integrated, and the three connection terminals 50 are accommodated in the 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 eccentric plane opposite to the curved surface 61b among the pair of eccentric planes forming the outer surface of the case member 61. Further, the axial direction of the second connecting portion 52 may be orthogonal to the direction in which the first connecting portion 51 extends. The longitudinal direction of the second connecting portion 52 coincides with the direction in which the first connecting portion 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 protruding portion 75. In this case, it becomes difficult for the liquid refrigerant containing oil to enter the accommodation portion 62 through the gap between the motor wiring insertion portion 73 and the motor wiring 27. Therefore, the insulation between each connection terminal 50 and the housing 11 can be further improved.

○ The cover member 80 does not have to be made of rubber as long as it is made of an insulating material, and may be made of, for example, resin.
○ 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 protruding portion 75.

○ The method of assembling 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 formed by engaging the claw portion formed in the lid portion 72 of the lid member 71 with the hole portion formed in the inner peripheral surface 63a of the terminal insertion hole 63 of the case member 61. And may be assembled.

○ The phase line bundle insertion recess 76 of the lid member 71 and the phase line 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 29a 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 the 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 penetrating the lid portion 72 in the thickness direction. Further, each motor wiring passing portion 82 may have a hole shape penetrating the cover member 80 in the thickness direction. In the embodiment shown in FIG. 7, each motor wiring insertion portion 73 and each motor wiring passage portion 82 have a circular hole shape. 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 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, as compared with the case where each motor wiring insertion portion 73 and each motor wiring passage portion 82 are grooves, the load from each motor wiring 27 is the load from each motor wiring insertion portion 73 and each motor wiring passage portion 82. It is possible to prevent cracks from entering the lid portion 72 and the cover member 80 of the lid member 71 from each motor wiring insertion portion 73 and each motor wiring passage portion 82 when the motor wiring is inserted. In the embodiment shown in FIG. 7, each motor wiring insertion portion 73 and each motor wiring passage portion 82 may have, for example, a square hole shape.

Although not shown, when the cover member 80 is made of an elastically deformable material, each motor wiring passing portion 82 may be formed by making a notch in the inner peripheral surface 81a forming the protrusion insertion hole 81. ..

○ In the lid member 71, two motor wirings 27 may be inserted through one motor wiring insertion portion 73.
○ In the cover member 80, two motor wirings 27 may be inserted through one motor wiring passing portion 82.

○ The number of phases of the coil 26 may be changed.
○ The number of conducting wires forming 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 conducting 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 accommodating portions 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 passing 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 conducting wires forming the coil 26.
○ The tip portion 74a of each extending portion 74 of the lid member 71 may face, for example, the first connecting portion 51 of each connection terminal 50 in the direction extending from the first end surface 72b of the lid portion 72. In short, the tip end portion 74a of each extension portion 74 of the lid member 71 may face at least a part of each connection terminal 50 in a direction extending from the first end surface 72b of the lid portion 72.

Each extending portion 74 of the lid member 71 may be abutted and restricted from moving toward the terminal insertion hole 63 of the connection terminal 50 by a portion other than the tip portion 74a.
○ In each motor wiring 27, a portion where the conductor wire of the coil 26 is covered with an insulating coating may be inserted through each motor wiring insertion portion 73.

○ In each motor wiring 27, a portion where the conductor wire of the coil 26 is covered with an insulating coating may be inserted into each motor wiring passing portion 82.
O The two motor wirings 27 of each phase may be covered with an insulating tube member. The motor wiring 27 is inserted into a part of each motor wiring passing portion 82 and a part of each motor wiring insertion portion 73 that overlap each other when viewed from the insertion direction of the connection terminal 50 in a state of being covered with the tube member. You may.

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

10 ... Electric compressor, 11 ... Housing, 17 ... Compressor, 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, 72a ... outer peripheral surface, 72b ... first end surface, 72c ... second end surface , 73 ... motor wiring insertion part, 74 ... extension part, 75 ... protrusion, 75a ... outer peripheral surface, 80 ... cover member, 81 ... protrusion insertion hole, 81a ... inner peripheral surface, 82 ... motor wiring passage part, 90. …resin.

Claims (8)

With an electric motor
The compression unit driven by the electric motor and
A housing for accommodating the electric motor and the compression unit,
The motor drive circuit that drives the electric motor and
The motor wiring drawn from the electric motor and
A conductive member electrically connected to the motor drive circuit and
A connector housed in the housing and connecting the motor wiring and the conductive member,
Equipped with
The connector is
A connection terminal that electrically connects the motor wiring and the conductive member,
An insulating cluster block accommodating the connection terminal and
It is an electric compressor equipped with
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.
With 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 connection terminal has a first connection portion to which the motor wiring is connected and a second connection portion into which the conductive member is inserted.
The extending portion abuts on the second connecting portion to restrict the movement of the connecting terminal toward the opening of the terminal insertion hole, which hinders the joining of the conductive member and the connecting terminal. Electric compressor. The lid portion has a motor wiring insertion portion through which the motor wiring is inserted.
The connector has an insulating property that covers a second end surface of the lid portion opposite to the first end surface, which is an end surface on which the extension portion extends, and has a motor wiring passage portion through which the motor wiring is inserted. With more cover members,
When viewed from the insertion direction of the connection terminal with respect to the terminal insertion hole, a part of the motor wiring passage portion overlaps with a part of the motor wiring insertion portion, and a part of the motor wiring insertion portion is the cover member. The electric compressor according to claim 1, which is blocked by the electric compressor. The lid member has a protrusion protruding from the second end surface and has a protrusion.
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 protruding portion.
The motor wiring is inserted into the motor wiring passing 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 the inner peripheral surface of the terminal insertion hole and the outer peripheral surface of the protruding portion. The motor wiring insertion portion is a groove recessed in the outer peripheral surface of the lid portion.
The electric compressor according to claim 3, wherein the motor wiring passing portion is a groove recessed in the inner peripheral surface of the protruding portion insertion hole. The electric compressor according to claim 2 or 3, wherein the motor wiring insertion portion and the motor wiring passage portion are hole-shaped. The lid portion has a motor wiring insertion portion through which the motor wiring is inserted.
The lid member has a protruding portion protruding from a second end surface opposite to the first end surface, which is an end surface of the lid portion on which the extending portion 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 protrusion.
The electric compressor according to claim 1, wherein a resin is filled between the inner peripheral surface of the terminal insertion hole and the outer peripheral surface of the protruding portion. With an electric motor
The compression unit driven by the electric motor and
A housing for accommodating the electric motor and the compression unit,
The motor drive circuit that drives the electric motor and
The motor wiring drawn from the electric motor and
A conductive member electrically connected to the motor drive circuit and
A connector housed in the housing and connecting the motor wiring and the conductive member,
Equipped with
The connector is
A connection terminal that electrically connects the motor wiring and the conductive member,
An insulating cluster block accommodating the connection terminal and
It is an electric compressor equipped with
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.
With 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 lid portion has a motor wiring insertion portion through which the motor wiring is inserted.
The extending portion abuts restricts the movement of the connecting terminal toward the opening of the terminal insertion hole, which hinders the joining of the conductive member and the connecting terminal.
The connector has an insulating property that covers a second end surface of the lid portion opposite to the first end surface, which is an end surface on which the extension portion extends, and has a motor wiring passage portion through which the motor wiring is inserted. With more cover members,
When viewed from the insertion direction of the connection terminal with respect to the terminal insertion hole, a part of the motor wiring passage portion overlaps with a part of the motor wiring insertion portion, and a part of the motor wiring insertion portion is the cover member. An electric compressor characterized by being blocked by. With an electric motor
The compression unit driven by the electric motor and
A housing for accommodating the electric motor and the compression unit,
The motor drive circuit that drives the electric motor and
The motor wiring drawn from the electric motor and
A conductive member electrically connected to the motor drive circuit and
A connector housed in the housing and connecting the motor wiring and the conductive member,
Equipped with
The connector is
A connection terminal that electrically connects the motor wiring and the conductive member,
An insulating cluster block accommodating the connection terminal and
It is an electric compressor equipped with
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.
With a lid member,
The lid member has a lid portion that closes the opening of the terminal insertion hole, an extension portion that extends from the lid portion toward the conductive member insertion hole, and the extension portion of the lid portion. It has a protrusion that protrudes from the second end face on the side opposite to the first end face, which is the end face.
The lid portion has a motor wiring insertion portion through which the motor wiring is inserted.
The extending portion abuts restricts the movement of the connecting terminal toward the opening of the terminal insertion hole, which hinders the joining of the conductive member and the connecting terminal.
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 protrusion.
An electric compressor characterized in that a resin is filled between the inner peripheral surface of the terminal insertion hole and the outer peripheral surface of the protruding portion.

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