JP2018168834A - Electric compressor - Google Patents

Abstract

To reduce a load applied to a connection terminal in drawing a conductive member out from a conductive member insertion hole of a cluster block.SOLUTION: In an insertion-engagement direction of a conductive member 32, a clearance S1 between an insertion cylinder 61 and a conductive member connection portion 42 is smaller than a clearance S2 between a cover member 60 and a caulk portion 45 of a motor wiring connection portion 43. Thus when a connection terminal 41 is moved in a drawing-out direction to the conductive member insertion hole 61h to drawn the conductive member 32 out from the conductive member insertion hole 61h, the conductive member connection portion 42 is brought into contact with an insertion cylinder 61 before a caulk portion 45 is brought into contact with the cover member 60. Thus the caulk portion 45 is prevented from being pressed to the cover member 60, a moment load on a connection region of the conductive member 32 and the conductive member connection portion 42 as a center is hardly acted on a connection terminal 41, and a load applied to the connection terminal 41 in drawing the conductive member 32 out from the conductive member insertion hole 61h 32 is reduced.SELECTED DRAWING: Figure 6

Description

  The present invention relates to an electric compressor including a compression unit that compresses a fluid, an electric motor that rotates a rotating shaft, and a drive circuit that drives the electric motor.

  For example, as disclosed in Patent Document 1, the housing of the electric compressor houses a compression unit and an electric motor. Motor wiring is drawn out from the electric motor. A through hole is formed in the housing. A conductive member is inserted through the through hole. One end of the conductive member is electrically connected to the drive circuit. A connector for connecting the motor wiring and the conductive member is disposed in the housing. The connector includes a connection terminal connected to the motor wiring and electrically connected to the other end of the conductive member, and an insulating cluster block that accommodates the connection terminal inside. When electric power is supplied from the drive circuit to the electric motor via the conductive member, the connection terminal, and the motor wiring, the electric motor is driven, and the rotation of the rotating shaft accompanying the driving of the electric motor causes the compression unit to drive and the refrigerant to flow. It is compressed by the compression unit.

  The cluster block is formed with a storage chamber in which the connection terminal is accommodated, a conductive member insertion hole into which the conductive member is inserted, and a motor wiring insertion hole into which the motor wiring is inserted. The connection terminal includes a conductive member connecting portion electrically connected to the other end of the conductive member, a motor wiring connecting portion electrically connected to the motor wiring, and the conductive member connecting portion and the motor wiring connection. And a connecting part that connects the parts. Then, the conductive member is inserted into the cluster block through the conductive member insertion hole, and is inserted into the conductive member connecting portion of the connection terminal and electrically connected, so that the motor wiring and the conductive member are connected to the connection terminal. It is electrically connected via.

JP 2014-34918 A

  In the above configuration, when the conductive member is pulled out from the conductive member insertion hole of the cluster block for reassembly, such as when an assembly failure occurs, the connection terminal is pulled in the pulling direction with respect to the conductive member insertion hole in the conductive member. There is a case where the motor wiring or the motor wiring connecting portion is pressed against the inner wall of the storage chamber by moving. Then, when the motor wiring or the motor wiring connection portion is pressed against the inner wall of the storage chamber and the extraction from the conductive member insertion hole in the conductive member is continued, the motor wiring or the motor wiring connection portion moves the inner wall of the storage chamber. The reaction force of the pressing force acts on the motor wiring or the motor wiring connecting portion. The reaction force acting on the motor wiring or the motor wiring connecting portion acts as a moment load centering on the connection portion between the conductive member and the conductive member connecting portion, so that there is a risk that the connecting terminal is subjected to a load and the connecting terminal is deformed. There is.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a connector that can reduce a load applied to a connection terminal when the conductive member is pulled out from the conductive member insertion hole of the cluster block. Another object is to provide an electric compressor.

  An electric compressor that solves the above-described problems is a housing, a rotating shaft that is housed in the housing, an electric motor that is housed in the housing and rotates the rotating shaft, and is housed in the housing. The compressor is driven by the rotation of the rotating shaft to compress the fluid, a drive circuit for driving the electric motor, a motor wiring drawn from the electric motor, and a through hole formed in the housing. And an electric compressor having one end electrically connected to the drive circuit, and a connector disposed in the housing and connecting the motor wiring and the conductive member, The connector is connected to the motor wiring and electrically connected to the other end of the conductive member; and the connection terminal And an insulating cluster block accommodated therein, wherein the cluster block includes a storage chamber in which the connection terminal is accommodated, a conductive member insertion hole into which the conductive member is inserted, and the motor wiring. Motor wiring insertion holes are formed, and the connection terminal includes a conductive member connecting portion into which the other end of the conductive member is inserted and electrically connected, and the motor wiring and the electrical connection. A motor wiring connection portion that is connected in an electrically connected manner, and a connecting portion that connects the conductive member connection portion and the motor wiring connection portion, and the inner wall of the housing chamber has an insertion direction of the conductive member. A protruding portion that protrudes toward at least one of the conductive member connecting portion and the connecting portion is provided, and in the insertion direction, the gap between the protruding portion and the conductive member connecting portion or the connecting portion is Smaller than the gap between the inner wall of the vessel chamber motor wiring or the motor wiring connections.

  According to this, when the connection terminal moves in the extraction direction with respect to the conductive member insertion hole in the conductive member in an attempt to pull out the conductive member from the conductive member insertion hole, the motor wiring or the motor wiring connection portion is formed on the inner wall of the storage chamber. Prior to the contact, the conductive member connecting portion or the connecting portion comes into contact with the protruding portion, and the connection terminal no longer moves in the pulling direction with respect to the conductive member insertion hole in the conductive member. Therefore, it is avoided that the motor wiring or the motor wiring connection portion is pressed against the inner wall of the housing chamber, and the moment load centering on the connection portion between the conductive member and the conductive member connection portion is less likely to act on the connection terminal. It is possible to reduce a load applied to the connection terminal when the cluster block is pulled out from the conductive member insertion hole.

  In the electric compressor, the cluster block includes a case member in which at least a part of the connection terminal is accommodated, and a cover member coupled to the case member. The motor wiring insertion hole and the accommodation chamber include: Preferably, the case member and the cover member are coupled to each other, and the protruding portion and the conductive member insertion hole are formed in the cover member. According to this, the connector comprised from a connection terminal and the cluster block which accommodates a connection terminal can be manufactured easily.

  In the electric compressor, the protruding portion is an insertion cylinder whose inner side communicates with the conductive member insertion hole, the conductive member connection portion is cylindrical, and in the insertion direction, an end surface of the insertion cylinder is It is good to oppose the opening edge part of the said electrically-conductive member connection part.

  According to this, when an attempt is made to pull out the conductive member from the conductive member insertion hole of the cluster block, the opening edge of the conductive member connection portion is inserted when the connection terminal moves in the pulling direction with respect to the conductive member insertion hole in the conductive member. Since it contacts the end surface of the cylinder, the connection terminal can be reliably prevented from moving in the pulling direction with respect to the conductive member insertion hole in the conductive member. Further, since the distance between the protruding portion and the conductive member is short, the load applied to the connection terminal when the conductive member is pulled out from the conductive member insertion hole of the cluster block can be further reduced.

  According to this invention, it is possible to reduce the load applied to the connection terminal when the conductive member is pulled out from the conductive member insertion hole of the cluster block.

A side sectional view showing an electric compressor in an embodiment. The perspective view of a connection terminal and motor wiring. The exploded perspective view of a connector. The perspective view which shows a part of case member. The perspective view of a connector. The longitudinal cross-sectional view of a connector. FIG. 7 is a cross-sectional view taken along line 7-7 in FIG.

Hereinafter, an embodiment embodying an electric compressor will be described with reference to FIGS. The electric compressor of this embodiment is used for a vehicle air conditioner.
As shown in FIG. 1, the housing 11 of the electric compressor 10 includes a bottomed cylindrical discharge housing 12 and a bottomed cylindrical motor housing 13 connected to the discharge housing 12. The discharge housing 12 and the motor housing 13 are made of a metal material (for example, aluminum). The motor housing 13 has a bottom wall 13e and a side wall 13a extending in a cylindrical shape from the outer peripheral edge of the bottom wall 13e.

  A rotating shaft 14 is accommodated in the motor housing 13. Further, in the motor housing 13, there are a compression unit 15 that is driven by rotation of the rotating shaft 14 to compress the refrigerant as a fluid, and an electric motor 20 that rotates the rotating shaft 14 to drive the compression unit 15. Contained. The compression unit 15 and the electric motor 20 are arranged side by side in the axial direction, which is the direction in which the rotation axis L of the rotation shaft 14 extends. The electric motor 20 is disposed closer to the bottom wall 13 e of the motor housing 13 than the compression unit 15.

  A shaft support member 16 is provided between the compression unit 15 and the electric motor 20 in the motor housing 13. An insertion hole 16 h through which one end of the rotating shaft 14 is inserted is formed at the center of the shaft support member 16. A bearing 17 a is provided between the insertion hole 16 h and one end of the rotating shaft 14. One end of the rotating shaft 14 is rotatably supported by the shaft support member 16 via a bearing 17a.

  A cylindrical bearing portion 18 protrudes from the bottom wall 13 e of the motor housing 13. The other end of the rotating shaft 14 is inserted inside the bearing portion 18. A bearing 17 b is provided between the bearing portion 18 and the other end of the rotating shaft 14. The other end of the rotating shaft 14 is rotatably supported by the bearing portion 18 via a bearing 17b.

  The compression unit 15 includes a fixed scroll 15a fixed to the motor housing 13 and a movable scroll 15b disposed to face the fixed scroll 15a. The fixed scroll 15a and the movable scroll 15b mesh with each other. A compression chamber 15c whose volume can be changed is defined between the fixed scroll 15a and the movable scroll 15b.

  A bottomed cylindrical cover 19 is attached to the bottom wall 13 e of the motor housing 13. The bottom wall 13e of the motor housing 13 and the cover 19 form an accommodation space 19a that accommodates a drive circuit 30 that drives the electric motor 20. The bottom wall 13e of the motor housing 13 is a part of the housing 11 and functions as a partition that separates the inside of the housing 11 from the accommodation space 19a. The compression unit 15, the electric motor 20, and the drive circuit 30 are arranged side by side in the axial direction of the rotating shaft 14 in this order.

  The electric motor 20 includes a cylindrical stator 22 and a rotor 21 disposed inside the stator 22. The rotor 21 rotates integrally with the rotating shaft 14. The stator 22 surrounds the rotor 21. The rotor 21 has a rotor core 21a fixed to the rotating shaft 14 and a plurality of permanent magnets (not shown) provided on the rotor core 21a. The stator 22 has a cylindrical stator core 23 and a coil 24 wound around the stator core 23. Further, the stator 22 has an annular coil end 24 e that protrudes from both end faces 23 e in the axial direction of the rotating shaft 14 in the stator core 23. The coil end 24 e is a part of the coil 24.

  A suction port 13h is formed in the side wall 13a. The suction port 13 h sucks the refrigerant into the motor housing 13. The suction port 13h is disposed between the end wall 23e on the bottom wall 13e side of the motor housing 13 and the bottom wall 13e in the stator core 23 in the axial direction of the rotary shaft 14. The suction port 13h is connected to an external refrigerant circuit (not shown).

  A discharge chamber 12 a is formed in the discharge housing 12. The discharge housing 12 is formed with a discharge port 12h communicating with the discharge chamber 12a. The discharge port 12h is connected to an external refrigerant circuit.

  The refrigerant sucked into the motor housing 13 from the suction port 13h is sucked into the compression chamber 15c by the turning (suction operation) of the movable scroll 15b. The refrigerant in the compression chamber 15c is compressed by the turning (discharging operation) of the movable scroll 15b and discharged to the discharge chamber 12a. The refrigerant discharged into the discharge chamber 12a flows out to the external refrigerant circuit through the discharge port 12h and returns to the motor housing 13 through the suction port 13h.

  Three motor wires 28 are drawn out from the coil end 24e disposed opposite to the bottom wall 13e of the motor housing 13 so as to correspond to the U-phase, V-phase, and W-phase coils 24. Therefore, each motor wiring 28 is drawn from the electric motor 20. Each motor wiring 28 is drawn from the coil end 24e in a state where a part of the coil 24 drawn from the coil end 24e is covered with an insulating tube. The three motor wires 28 are drawn from the coil end 24e so that the directions extending in the circumferential direction of the rotating shaft 14 are the same.

  A through hole 13 b is formed in the bottom wall 13 e of the motor housing 13. The through hole 13b is formed at a position facing the inner peripheral side of the coil end 24e in the axial direction of the rotating shaft 14 with respect to the bottom wall 13e.

  An airtight terminal 31 is provided in the through hole 13b. The hermetic terminal 31 includes three conductive members 32 corresponding to the U-phase, V-phase, and W-phase coils 24. Each conductive member 32 is a cylindrical metal terminal extending linearly. Each conductive member 32 is inserted into the through hole 13 b and one end thereof is electrically connected to the drive circuit 30. The other end of each conductive member 32 protrudes from the accommodation space 19a into the motor housing 13 through the through hole 13b.

  The airtight terminal 31 has a support plate 31 a that supports each conductive member 32. Each conductive member 32 is supported by the support plate 31a while penetrating the support plate 31a. A glass insulating member (not shown) is interposed between each conductive member 32 and the support plate 31a. The support plate 31a is disposed in the accommodation space 19a, and is attached to the periphery of the through hole 13b on the outer surface of the bottom wall 13e by a screw (not shown).

  A connector 39 is disposed in the motor housing 13. The connector 39 connects the motor wiring 28 and the conductive member 32. The connector 39 includes a connection terminal 41 and an insulating cluster block 40 made of a resin that accommodates the connection terminal 41 therein. The cluster block 40 is a housing for the connector 39. The connection terminal 41 is electrically connected to the other end of the conductive member 32. The cluster block 40 accommodates three connection terminals 41 corresponding to the U-phase, V-phase, and W-phase coils 24. Each connection terminal 41 electrically connects each motor wiring 28 and each conductive member 32.

  As shown in FIG. 2, the connection terminal 41 is electrically connected to the motor wiring 28 and the cylindrical conductive member connection portion 42 to which the other end of the conductive member 32 is inserted and electrically connected. The motor wiring connection part 43 and the plate-shaped connection part 44 which connects the electrically-conductive member connection part 42 and the motor wiring connection part 43 are provided.

  The connecting portion 44 is bent between the conductive member connecting portion 42 and the motor wiring connecting portion 43. The connecting portion 44 has a first extending portion 44a, a bent portion 44b, and a second extending portion 44c. The first extending portion 44 a extends from the opening edge of the conductive member connection portion 42 in the axial direction of the conductive member connection portion 42. The bent portion 44b is continuous with the end portion of the first extending portion 44a opposite to the conductive member connecting portion 42, and extends in a direction perpendicular to the axial direction of the conductive member connecting portion 42 with respect to the first extending portion 44a. It is bent. The second extending portion 44c is continuous with the end portion of the bent portion 44b opposite to the first extending portion 44a and extends in a direction perpendicular to the axial direction of the conductive member connecting portion 42 to the motor wiring connecting portion 43. It is connected. Therefore, the connection terminal 41 is formed in an L shape.

  The motor wiring connection portion 43 has an electrical connection portion 46 that is an end portion of the motor wiring 28 and is connected to a portion where the insulating tube is removed and the coil 24 is exposed. The motor connection 28 and the connection terminal 41 are electrically connected by electrically connecting the electrical connection 46 and the end of the motor wiring 28. In addition, the motor wiring connection portion 43 has a pair of caulking portions 45 extending from the end portion of the electrical connection portion 46 on the side opposite to the connecting portion 44. The motor wiring 28 is mechanically connected to the motor wiring connecting portion 43 by caulking the portion covered with the insulating tube by the pair of caulking portions 45.

  As shown in FIG. 3, the cluster block 40 includes a case member 50 in which at least a part of the connection terminal 41 is accommodated, and a cover member 60 coupled to the case member 50. In the cluster block 40, a storage chamber 55 in which each connection terminal 41 is accommodated, a conductive member insertion hole 61h in which each conductive member 32 is inserted, and a motor wiring insertion hole 51 in which each motor wiring 28 is inserted. And are formed. Each motor wiring insertion hole 51 and each accommodation chamber 55 are formed by coupling the case member 50 and the cover member 60.

  The case member 50 has a case main body 52 in which three openings 51 a that form the motor wiring insertion holes 51 are formed. The case member 50 has three bottomed cylindrical storage cylinders 53 protruding from the case main body 52. The axial directions of the three housing cylinders 53 are the same. The three storage cylinders 53 are arranged on a straight line at a predetermined interval in a direction orthogonal to the axial direction of the storage cylinder 53. The conductive member connection portions 42 of the connection terminals 41 are housed inside the housing cylinders 53, respectively.

  The case body 52 is formed with three communication holes 54 that allow the openings 51 a to communicate with the interior of the housing cylinders 53. Each communication hole 54 extends in a direction perpendicular to the axial direction of each storage cylinder 53. Each opening 51a and each communication hole 54 are open on one surface 52a on the opposite side of the surface of the case main body 52 from which each housing cylinder 53 protrudes. One surface 52a of the case body 52 is one surface of the case member 50 located in a direction orthogonal to the insertion direction with respect to each opening 51a in each motor wiring 28.

  As shown in FIG. 4, the communication hole 54 is formed of a caulking portion accommodating portion 54a, an electrical connection portion accommodating portion 54b, and a communicating portion 54c. The caulking portion accommodating portion 54a is continuous with the opening 51a and accommodates the caulking portion 45. The electrical connection portion accommodating portion 54b is continuous to the side opposite to the opening 51a in the caulking portion accommodating portion 54a, and accommodates the electrical connection portion 46. The communication portion 54c is continuous to the side of the electrical connection portion accommodation portion 54b opposite to the caulking portion accommodation portion 54a, and communicates the electrical connection portion accommodation portion 54b and the inside of the accommodation cylinder 53.

  The caulking portion accommodating portion 54 a and the electrical connection portion accommodating portion 54 b are recessed from the one surface 52 a of the case main body 52. The width in the direction orthogonal to the extending direction of the communication hole 54 in the caulking portion accommodating portion 54a is the width in the direction orthogonal to the extending direction of the communicating hole 54 in the opening 51a and the communication hole in the electrical connection portion accommodating portion 54b. It is larger than the width in the direction orthogonal to the extending direction of 54. The width in the direction orthogonal to the extending direction of the communication hole 54 in the electrical connection portion accommodating portion 54b and the width in the direction orthogonal to the extending direction of the communication hole 54 in the opening 51a are the same. The communication portion 54 c has a circular hole shape having the same hole diameter as the inner diameter of the housing cylinder 53.

  As shown in FIG. 3, the interior of each communication hole 54 and each storage cylinder 53 forms a storage chamber 55. Each opening 51 a is continuous with each accommodation chamber 55. Each opening 51 a and each accommodation chamber 55 are open on one surface 52 a of the case main body 52.

A plurality of protrusions 56 protrude from the side surface of the case body 52. The plurality of protrusions 56 are used to attach the cover member 60 to the case main body 52.
The cover member 60 is substantially plate-shaped. Each conductive member insertion hole 61 h is formed in the cover member 60. Each conductive member insertion hole 61 h and the inside of each conductive member connection portion 42 overlap in the axial direction of each conductive member connection portion 42.

The cover member 60 has attachment portions 62 that are respectively engaged with the protrusions 56 of the case main body 52.
As shown in FIG. 5, each attachment portion 62 is locked to each projection 56, whereby the cover member 60 is attached to one surface 52 a of the case main body 52, and the case member 50 and the cover member 60 are coupled. .

  Each connection terminal 41 has an opening on the one surface 52a side of the case main body 52 with respect to each storage chamber 55 and each opening 51a, with each connection terminal 41 and each motor wiring 28 being connected to each motor wiring 28 in advance. Is inserted into the storage chamber 55. Thereafter, the cover member 60 is attached to the one surface 52 a of the case main body 52, whereby the opening on the one surface 52 a side of the case main body 52 in each opening 51 a and each storage chamber 55 is closed by the cover member 60.

  Each motor wiring insertion hole 51 is formed by closing the opening on the one surface 52 a side of the case main body 52 in each opening 51 a by the cover member 60. Each accommodation chamber 55 is formed by closing the opening on the one surface 52 a side of the case main body 52 in each accommodation chamber 55 by the cover member 60. The case member 50 and the cover member 60 constitute an inner wall of the accommodation chamber 55.

  Then, the other end of each conductive member 32 is inserted into the cluster block 40 via each conductive member insertion hole 61h and inserted inside each conductive member connection portion 42, whereby each conductive member connection portion 42 is inserted. Is electrically connected. Thereby, each motor wiring 28 and each conductive member 32 are electrically connected via each connection terminal 41.

  The electric power controlled by the drive circuit 30 is supplied to the electric motor 20 through each conductive member 32, each connection terminal 41, and each motor wiring 28. Thereby, the electric motor 20 is driven, and the rotation of the rotating shaft 14 accompanying the driving of the electric motor 20 drives the compression unit 15 so that the refrigerant is compressed by the compression unit 15.

  As shown in FIG. 6, the connection terminal 41 is accommodated in the cluster block 40 so that the conductive member connection portion 42 is disposed at a position farther from the cover member 60 than the motor wiring connection portion 43 in the cluster block 40. ing. The insertion direction of the conductive member 32 with respect to the conductive member connection portion 42 is orthogonal to the insertion direction of the motor wiring 28 with respect to the motor wiring insertion hole 51.

  As shown in FIGS. 6 and 7, the cover member 60 includes an insertion cylinder 61 that protrudes from the periphery of the conductive member insertion hole 61 h on the surface of the cover member 60 on the case body 52 side. The inner side of the insertion tube 61 communicates with the conductive member insertion hole 61h. The insertion cylinder 61 is a protruding portion that protrudes toward the conductive member connecting portion 42 and the bent portion 44 b of the connecting portion 44 in the insertion direction of the conductive member 32.

  The insertion cylinder 61 is inserted into the communication portion 54 c of the case body 52, and the protruding end of the insertion cylinder 61 enters the inside of the housing cylinder 53. As shown in FIG. 7, the end surface 61 a of the insertion tube 61 faces the opening edge of the conductive member connection portion 42 in the insertion direction of the conductive member 32. As shown in FIG. 6, the insertion tube 61 is formed with a notch 61 k that avoids interference with the bent portion 44 b of the connecting portion 44.

  In the insertion direction of the conductive member 32, the gap S <b> 1 between the insertion tube 61 and the conductive member connection portion 42 is larger than the gap S <b> 2 between the cover member 60 that is the inner wall of the storage chamber 55 and the caulking portion 45 of the motor wiring connection portion 43. small. Further, in the insertion direction of the conductive member 32, the gap S <b> 3 between the cutout portion 61 k of the insertion tube 61 and the bent portion 44 b of the connecting portion 44 is larger than the gap S <b> 2 between the cover member 60 and the caulking portion 45. Furthermore, in the insertion direction of the conductive member 32, the gap S4 between the cover member 60 and the motor wiring 28 is larger than the gap S2 between the cover member 60 and the caulking portion 45.

Next, the operation of this embodiment will be described.
When the conductive member 32 is pulled out from the conductive member insertion hole 61 h, the connection terminal 41 is connected to the conductive member insertion hole 61 h in the conductive member 32 due to the sliding resistance generated between the conductive member 32 and the conductive member connection portion 42. Try to move in the pulling direction. At this time, in the insertion direction of the conductive member 32, the gap S1 between the insertion tube 61 and the conductive member connecting portion 42 is smaller than the gap S2 between the cover member 60 and the caulking portion 45. Prior to contacting the conductive member connecting portion 42, the conductive member connecting portion 42 contacts the end surface 61 a of the insertion tube 61. This prevents the connection terminal 41 from moving further in the pulling direction of the conductive member 32 with respect to the conductive member insertion hole 61h, preventing the caulking portion 45 from being pressed against the cover member 60, and the conductive member 32 and the conductive member connecting portion. The moment load centering on the connection part with 42 becomes difficult to work on the connection terminal 41. As a result, the load applied to the connection terminal 41 when the conductive member 32 is pulled out from the conductive member insertion hole 61h is reduced.

In the above embodiment, the following effects can be obtained.
(1) In the insertion direction of the conductive member 32, the gap S <b> 1 between the insertion cylinder 61 and the conductive member connection portion 42 is smaller than the gap S <b> 2 between the cover member 60 and the caulking portion 45 of the motor wiring connection portion 43. According to this, when the connection terminal 41 moves in the pulling direction with respect to the conductive member insertion hole 61 h in the conductive member 32 in an attempt to pull out the conductive member 32 from the conductive member insertion hole 61 h, the caulking portion 45 is attached to the cover member 60. Prior to contact, the conductive member connecting portion 42 contacts the insertion tube 61. Therefore, the caulking portion 45 is prevented from being pressed against the cover member 60, and the moment load centering on the connection portion between the conductive member 32 and the conductive member connecting portion 42 becomes difficult to act on the connection terminal 41. It is possible to reduce the load applied to the connection terminal 41 when it is pulled out from the member insertion hole 61h.

  (2) The cluster block 40 includes a case member 50 in which at least a part of the connection terminal 41 is accommodated, and a cover member 60 coupled to the case member 50. The motor wiring insertion hole 51 and the accommodation chamber 55 have a case It is formed by joining the member 50 and the cover member 60. The insertion cylinder 61 and the conductive member insertion hole 61 h are formed in the cover member 60. According to this, the connector 39 comprised from the connection terminal 41 and the cluster block 40 which accommodates the connection terminal 41 can be manufactured easily.

  (3) In the insertion direction of the conductive member 32, the end surface 61 a of the insertion tube 61 faces the opening edge of the conductive member connection portion 42. According to this, when the connection terminal 41 moves in the extraction direction with respect to the conductive member insertion hole 61h in the conductive member 32 in an attempt to pull out the conductive member 32 from the conductive member insertion hole 61h, the opening edge of the conductive member connection portion 42 is obtained. The portion contacts the end surface 61 a of the insertion tube 61. For this reason, it can prevent reliably that the connection terminal 41 moves to the extraction direction with respect to the electrically-conductive member insertion hole 61h in the electrically-conductive member 32. FIG. Moreover, since the distance between the end surface 61a and the conductive member 32 is short, the load applied to the connection terminal 41 when the conductive member 32 is pulled out from the conductive member insertion hole 61h can be further reduced.

In addition, you may change the said embodiment as follows.
In the insertion direction of the conductive member 32, the gap S3 between the cutout portion 61k of the insertion tube 61 and the bent portion 44b of the connecting portion 44 may be smaller than the gap S2 between the cover member 60 and the caulking portion 45. In this case, in the insertion direction of the conductive member 32, the gap S1 between the insertion tube 61 and the conductive member connection portion 42 may be larger than the gap S2 between the cover member 60 and the caulking portion 45. According to this, when the connection terminal 41 moves in the pulling direction with respect to the conductive member insertion hole 61 h in the conductive member 32 in an attempt to pull out the conductive member 32 from the conductive member insertion hole 61 h, the caulking portion 45 is attached to the cover member 60. Prior to the contact, the bent portion 44 b of the connecting portion 44 contacts the notch 61 k of the insertion tube 61. Therefore, the caulking portion 45 is prevented from being pressed against the cover member 60, and the moment load centering on the connection portion between the conductive member 32 and the conductive member connecting portion 42 becomes difficult to act on the connection terminal 41. It is possible to reduce the load applied to the connection terminal 41 when it is pulled out from the member insertion hole 61h.

  As long as the gap S1 between the insertion tube 61 and the conductive member connecting portion 42 is smaller than the gap S4 between the cover member 60 and the motor wiring 28 in the insertion direction of the conductive member 32, the conductive member 32 is inserted. In the direction, the gap S4 between the cover member 60 and the motor wiring 28 may be smaller than the gap S2 between the cover member 60 and the caulking portion 45. For example, the motor wiring connection portion 43 may not have the caulking portion 45. According to this, when the connection terminal 41 moves in the pulling direction with respect to the conductive member insertion hole 61h in the conductive member 32 in an attempt to pull out the conductive member 32 from the conductive member insertion hole 61h, the motor wiring 28 is connected to the cover member 60. Prior to the contact, the conductive member connecting portion 42 contacts the end surface 61 a of the insertion tube 61. Therefore, it is avoided that the motor wiring 28 is pressed against the cover member 60, and the moment load around the connection portion between the conductive member 32 and the conductive member connection portion 42 becomes difficult to act on the connection terminal 41, and the conductive member 32 is made conductive. It is possible to reduce the load applied to the connection terminal 41 when it is pulled out from the member insertion hole 61h.

  In the embodiment, the cover member 60 may have a columnar protrusion that protrudes toward the conductive member connection portion 42 in the insertion direction of the conductive member 32 instead of the insertion tube 61. The protruding portion is inserted into the communication portion 54 c of the case main body 52, and the protruding end portion enters the inside of the housing cylinder 53. In the insertion direction of the conductive member 32, the gap between the protruding portion and the conductive member connecting portion 42 is smaller than the gap S <b> 2 between the cover member 60 and the caulking portion 45. In short, the protruding portion is not limited to the insertion tube 61 whose inside communicates with the conductive member insertion hole 61h. The protruding portion may not protrude toward the connecting portion 44 but protrude toward only the conductive member connecting portion 42.

  In the embodiment, the cover member 60 may have a columnar protrusion that protrudes toward the connecting portion 44 in the insertion direction of the conductive member 32 instead of the insertion tube 61. In the insertion direction of the conductive member 32, the gap between the protruding portion and the connecting portion 44 is smaller than the gap S <b> 2 between the cover member 60 and the caulking portion 45. In short, the protruding portion may not protrude toward the conductive member connecting portion 42 but protrude toward the connecting portion 44 alone. That is, the cover member 60 only needs to have a protruding portion that protrudes toward at least one of the conductive member connecting portion 42 and the connecting portion 44 in the insertion direction of the conductive member 32.

  In the embodiment, the connection terminal 41 may have a configuration in which the bent portion 44b is bent in a direction oblique to the first extending portion 44a in the axial direction of the conductive member connecting portion 42.

In the embodiment, the connection terminal 41 may be configured not to be bent.
In the embodiment, the insertion direction of the conductive member 32 may be oblique to the insertion direction of the motor wiring 28 with respect to the motor wiring insertion hole 51.

In the embodiment, the conductive member connection portion 42 may have a rectangular tube shape.
In the embodiment, the numbers of the motor wiring 28, the conductive member 32, and the connection terminal 41 are not particularly limited.

  In the embodiment, the connector 39 may be configured such that the connection terminal 41 and the cluster block 40 are insert-molded. In this case, the cluster block 40 may be configured not to be divided into the case member 50 and the cover member 60.

  In the embodiment, the compression unit 15, the electric motor 20, and the drive circuit 30 may not be arranged along the rotation axis L of the rotation shaft 14 in this order. For example, the cover 19 may be attached to the side wall 13 a of the motor housing 13, and the drive circuit 30 may be accommodated in a space defined by the side wall 13 a of the motor housing 13 and the cover 19.

  In embodiment, the compression part 15 is not restricted to the type comprised by the fixed scroll 15a and the movable scroll 15b, For example, you may change into a piston type, a vane type, etc.

  (Circle) in embodiment, the electric compressor 10 may not be used for a vehicle air conditioner, and may be used for another air conditioner.

  DESCRIPTION OF SYMBOLS 10 ... Electric compressor, 11 ... Housing, 13b ... Through-hole, 14 ... Rotating shaft, 15 ... Compression part, 20 ... Electric motor, 28 ... Motor wiring, 30 ... Drive circuit, 32 ... Conductive member, 39 ... Connector, 40 DESCRIPTION OF SYMBOLS ... Cluster block, 41 ... Connection terminal, 42 ... Conductive member connection part, 43 ... Motor wiring connection part, 44 ... Connection part, 50 ... Case member, 51 ... Motor wiring insertion hole, 55 ... Storage chamber, 60 ... Cover member, 61 ... Insertion cylinder which is a protrusion, 61a ... End face, 61h ... Conductive member insertion hole.

Claims (3)

A housing;
A rotating shaft housed in the housing;
An electric motor housed in the housing and rotating the rotating shaft;
A compressing unit that is housed in the housing and that is driven by the rotation of the rotating shaft to compress the fluid;
A drive circuit for driving the electric motor;
Motor wiring drawn from the electric motor;
A conductive member inserted into a through-hole formed in the housing and electrically connected at one end to the drive circuit;
An electric compressor provided with a connector that is disposed in the housing and connects the motor wiring and the conductive member,
The connector is
A connection terminal connected to the motor wiring and electrically connected to the other end of the conductive member;
An insulating cluster block that accommodates the connection terminal therein, and
The cluster block includes
A storage chamber in which the connection terminal is stored, a conductive member insertion hole into which the conductive member is inserted, and a motor wiring insertion hole through which the motor wiring is inserted are formed,
The connection terminal is
A conductive member connecting portion to which the other end of the conductive member is inserted and electrically connected;
A motor wiring connection portion electrically connected to the motor wiring;
A connecting portion for connecting the conductive member connecting portion and the motor wiring connecting portion;
The inner wall of the storage chamber is provided with a protruding portion that protrudes toward at least one of the conductive member connecting portion and the connecting portion in the insertion direction of the conductive member,
In the insertion direction, a gap between the protruding portion and the conductive member connecting portion or the connecting portion is smaller than a gap between the inner wall of the storage chamber and the motor wiring or the motor wiring connecting portion. Electric compressor. The cluster block is
A case member that accommodates at least a part of the connection terminal, and a cover member that is coupled to the case member,
The motor wiring insertion hole and the storage chamber are formed by coupling the case member and the cover member,
The electric compressor according to claim 1, wherein the protrusion and the conductive member insertion hole are formed in the cover member. The protruding portion is an insertion cylinder whose inner side communicates with the conductive member insertion hole,
The conductive member connection portion is cylindrical,
3. The electric compressor according to claim 2, wherein an end surface of the insertion tube is opposed to an opening edge of the conductive member connecting portion in the insertion direction.