Motor compressor

Abstract

To provide a motor compressor which can protect a conductor connecting conductive pins with inverter terminals and achieve improvement of assembly workability of the motor compressor.SOLUTION: In a motor compressor, an electric connection member 60 electrically connects conductive pins 42 provided at a bottom wall 34B of a motor housing 34 with inverter terminals 52 provided within an inverter housing 36 and includes: a housing case 62 fixed to the bottom wall 34B; plate-like bus bars 64; first terminals 66 with which the conductive pins 42 are connected at the outside of the motor housing 34; and second terminals 68 with which the inverter terminals 52 are connected at the inside of the inverter housing 36. The housing case 62 which houses the bus bars 64 and the first terminals 66 has second through holes 65C through each of which the conductive pin 42 may penetrate. The bus bars 64 are bent so that axial movement of the electric connection member 60 causes the first terminals 66 and the conductive pins 42 to be fitted and the second terminals 68 and the inverter terminals 52 to be fitted.SELECTED DRAWING: Figure 10

Description

[Technical field]

[0001] The present invention relates to an electric compressor. [Background technology]

[0002] An example of a conventional electric compressor is disclosed in Patent Document 1. This electric compressor includes a compression unit, a motor, an inverter, and a housing.

[0003] The compression section is driven by rotation of the rotating shaft to compress the fluid. The motor rotates the rotating shaft. The inverter has an inverter circuit that drives the motor. The housing has a motor housing and an inverter housing. The motor housing accommodates the motor. The inverter housing accommodates the inverter device.

[0004] In this electric compressor, the motor housing and the inverter housing are arranged side by side in the radial direction of the rotating shaft, thereby preventing the axial length of the electric compressor from becoming large.

[0005] In this electric compressor, the motor housing is provided with conductive pins electrically connected to the motor, and the inverter housing is provided with inverter terminals electrically connected to the inverter circuit. The conductive pins and the inverter terminals are connected by conductors such as lead wires or bus bars, and these conductors are disposed outside the housing on one side in the axial direction of the rotating shaft. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2000-255252 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, in the above-mentioned conventional electric compressor, since the conductors are disposed outside the housing, the conductors are easily damaged and there are concerns about the protection of the conductors.

[0008] Furthermore, the conductors are connected to the conductive pins and the inverter terminals by welding or screw fastening, which reduces the workability of assembling the electric compressor.

[0009] The present invention has been made in consideration of the above-mentioned conventional situation, and has an object to be achieved by providing an electric compressor that can protect the conductor connecting the conductive pin and the inverter terminal, and can improve the ease of assembly of the electric compressor. [Means for solving the problem]

[0010] The electric compressor of the present invention comprises: a rotating shaft; a compression section that is driven by rotation of the rotary shaft to compress a fluid; A motor that rotates the rotary shaft; an inverter having an inverter circuit for driving the motor; an inverter housing that houses the inverter; a cylindrical motor housing having a bottom, the motor housing housing having an inner peripheral surface thereof and an inverter chamber having an outer peripheral surface thereof and housing the inverter therein; a compression section housing having a bottom and a cylindrical shape that houses the compression section; a shaft support member that is provided between the motor housing and the compression unit housing, defines, together with the motor housing, a motor chamber that houses the motor, and defines, together with the compression unit housing, a compression unit chamber that houses the compression unit, and has an insertion hole through which the rotation shaft is inserted and rotatably supports the rotation shaft; a conductive pin that is inserted into a first through hole formed in a bottom wall of the motor housing and is held relative to the first through hole and is electrically connected to the motor; an inverter terminal provided inside the inverter housing and electrically connected to the inverter circuit; an electrical connection member that electrically connects the conductive pin and the inverter terminal; the electrical connection member includes a plate-shaped bus bar, a first terminal provided at one end of the bus bar and to which the conductive pin is connected outside the motor housing, a second terminal provided at the other end of the bus bar and to which the inverter terminal is connected inside the inverter housing, and an accommodating case that accommodates the first terminal and the bus bar, has a second through hole through which the conductive pin can pass toward the first terminal, and is fixed to a bottom wall of the motor housing, The present invention is characterized in that, by moving the electrical connection member in the axial direction of the rotating shaft, the first terminal and the conductive pin are engaged with each other, and the bus bar is bent so that the second terminal and the inverter terminal are engaged with each other.

[0011] In the electric compressor of the present invention, a first terminal provided at one end of the bus bar is connected to a conductive pin outside the motor housing, and a second terminal provided at the other end of the bus bar is connected to an inverter terminal inside the inverter housing. The bus bar and the first terminal are accommodated in the accommodation case. Therefore, the conductor connecting the conductive pin and the inverter terminal, i.e., the first terminal, the second terminal, and the bus bar, are not exposed to the outside of the housing. As a result, the conductor is less likely to be damaged, and the conductor can be protected.

[0012] Furthermore, by moving the electrical connection member in the axial direction of the rotating shaft, the first terminal is fitted to the conductive pin, and the bus bar is bent so that the second terminal is fitted to the inverter terminal. Therefore, the first terminal can be connected to the conductive pin and the second terminal can be connected to the inverter terminal by the simple task of moving the electrical connection member in the axial direction, without the need for cumbersome tasks such as welding or screw fastening. As a result, the ease of assembly of the electric compressor can be improved.

[0013] Therefore, according to this electric compressor, it is possible to protect the conductor connecting the conductive pin and the inverter terminal, and to improve the ease of assembly of the electric compressor.

[0014] The first terminal preferably has a receptacle terminal into which the conductive pin is fitted in the axial direction, and the second terminal preferably extends in the axial direction. Furthermore, the bus bar preferably has an edgewise bent portion that is bent edgewise so that the second terminal is fitted into the inverter terminal, and a pair of flatwise bent portions that are bent flatwise between the edgewise bent portion and the receptacle terminal so that the position of the receptacle terminal can be adjusted in a surface direction of the bottom wall of the motor housing perpendicular to the axial direction.

[0015] In this case, the position of the receptacle terminal with respect to the conductive pin can be adjusted by swinging one end of the bus bar about the flatwise bent portion in the surface direction of the bottom wall of the motor housing perpendicular to the axial direction of the rotating shaft, which makes it easier to connect the receptacle terminal and the conductive pin, thereby improving the assembly workability of the electric compressor.

[0016] The receptacle terminal preferably has a receiving opening into which the conductive pin is introduced, and the diameter of the receiving opening is preferably larger than the diameter of the conductive pin.

[0017] In this case, by moving the electrical connection member in the axial direction, the position of the receptacle terminal can be adjusted with respect to the conductive pin while the conductive pin can be introduced into the receiving opening of the receptacle terminal, which makes it easier to connect the receptacle terminal and the conductive pin, thereby further improving the ease of assembly of the electric compressor.

[0018] A high-voltage connector for supplying electric power from an external power supply to the motor and a communication connector for transmitting a control signal from an external control device, which has a smaller electric power than the external power supply, to the inverter are preferably connected to the inverter housing, and the high-voltage connector is preferably disposed on the opposite side to the communication connector with an electrical connection member interposed therebetween.

[0019] In this case, it is easy to increase the distance between the communication connector and the high-voltage connector, which is advantageous in reducing noise propagating from the high-voltage connector to the communication connector.

[0020] The inverter housing preferably has an extension extending in the axial direction of the rotating shaft beyond a bottom wall of the motor housing, and the extension preferably protrudes in the axial direction beyond the bottom wall of the motor housing beyond the electrical connection member.

[0021] In this case, in an electric compressor in which the inverter housing has an extension, even if an electrical connection member is provided on the bottom wall of the motor housing, the axial length of the electric compressor does not increase, which can contribute to reducing the axial length of the electric compressor. Effect of the Invention

[0022] According to the electric compressor of the present invention, it is possible to protect the conductor connecting the conductive pin and the inverter terminal, and to improve the ease of assembly of the electric compressor. [Brief description of the drawings]

[0023] [Figure 1] FIG. 1 is a schematic diagram of a compressor module equipped with an electric compressor according to an embodiment, as viewed from the left. [Diagram 2] FIG. 2 is a schematic diagram showing a compressor module including an electric compressor according to the embodiment as viewed from above. [Diagram 3] FIG. 3 is a schematic diagram of a compressor module including an electric compressor according to the embodiment, as viewed from the rear. [Figure 4] FIG. 4 is a partial schematic view of an inverter housing portion of the electric compressor according to the embodiment as viewed from above. [Diagram 5] FIG. 5 is a partial schematic diagram showing the positional relationship of each electronic component when the electric compressor of the embodiment is viewed from the front. [Figure 6] FIG. 6 is a partial perspective view showing a housing and an airtight terminal of the electric compressor according to the embodiment. [Figure 7]FIG. 7 is a partial perspective view showing a part of the accommodating case and the bus bar in the electrical connection member, a part of the airtight terminal, and an inverter housing in the electric compressor of the embodiment. [Figure 8] FIG. 8 is a perspective view showing an electric connection member of the electric compressor according to the embodiment, as viewed obliquely from behind. [Figure 9] FIG. 9 is a perspective view showing an electric connection member of the electric compressor according to the embodiment, as viewed obliquely from the front. [Figure 10] FIG. 10 is a perspective view showing a part of the accommodating case and the bus bars of the electric compressor according to the embodiment, as viewed obliquely from behind. [Figure 11] FIG. 11 is a perspective view showing, in the electric compressor of the embodiment, a state in which a receptacle terminal provided at one end of a bus bar is connected to a connection end of a conductive pin, and also a male terminal and a female terminal provided at the other end of the bus bar are connected. [Figure 12] FIG. 12 is a perspective view illustrating a state in which one end of a bus bar swings in the electric compressor of the embodiment. [Figure 13] FIG. 13 is a schematic diagram showing a modification in which the diameter of the receiving opening in the receptacle terminal is made larger than the diameter of the conductive pin in the electric compressor of the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. An electric compressor (hereinafter simply referred to as a compressor) 20 of the embodiment is specifically a scroll type electric compressor. This compressor 20 is mounted on a vehicle (not shown) and applied to a vehicle air conditioner. This vehicle air conditioner is a heat pump cycle device that conditions the air in the vehicle cabin and adjusts the temperature of on-board equipment.

[0025] In this embodiment, the front-rear direction and the up-down direction of the compressor 20 are defined by solid arrows shown in Fig. 1. The front side of the paper in Fig. 1 is the left side, and the back side of the paper is the right side. In Fig. 2 and subsequent figures, the front-rear direction, up-down direction, and left-right direction of the compressor 20 are defined corresponding to Fig. 1. In the following description, front-rear, up-down, and left-right are all based on the front-rear, up-down, and left-right directions in Fig. 1. Note that these directions are an example provided for convenience of description, and the attitude of the compressor 20 is changed as appropriate depending on the vehicle in which it is installed, etc.

[0026] 1 to 3, a compressor 20 of the embodiment constitutes a compressor module 10 incorporated in a heat pump cycle device (not shown). The compressor module 10 is integrated with a plurality of devices constituting the heat pump cycle device. Specifically, the compressor module 10 is integrated with the compressor 20, and, although not shown, for example, an expansion valve, an adjustment valve, an on-off valve, a chiller, a receiver, a water-cooled heat exchanger, and a muffler, among the devices constituting the heat pump cycle.

[0027] This heat pump cycle device switches and controls on-off valves etc. according to various operating modes, thereby heating and cooling the air blown into the vehicle cabin with the refrigerant circulating through the refrigerant circuit, and cooling the cooling heat medium circulating through the heat medium circuit with the refrigerant circulating through the refrigerant circuit.

[0028] The compressor module 10 includes a flow path box 12 that is a thick plate having a generally rectangular flat shape. A plurality of devices that constitute the heat pump cycle device are attached to the flow path box 12. Although not shown in the figure, the flow path box 12 includes a refrigerant passage for circulating the refrigerant that circulates in the refrigerant circuit in the heat pump cycle device, as well as a heat medium passage for circulating the cooling heat medium that circulates in the heat medium circuit.

[0029] The compressor 20 is accommodated within the range of the outer shape of the flow path box 12, which is a rectangular flat plate. In addition, in the positional relationship between the flow path box 12 and the compressor 20, a rotation axis O of a rotating shaft 22 (described later) in the compressor 20 extends parallel to the main surface of the flow path box 12, which is a rectangular flat plate, that has the largest area. More specifically, the rotation axis O of the rotating shaft 22 extends parallel to the longitudinal direction of the main surface of the flow path box 12. The compressor 20 may be disposed such that the rotation axis O of the rotating shaft 22 extends perpendicular to the main surface of the flow path box 12.

[0030] The compressor 20 includes a rotating shaft 22 , a compression section 24 , a motor 26 , an inverter 28 , and a housing 30 .

[0031] The housing 30 has a compression unit housing 32 having a cylindrical shape with a bottom, a motor housing 34 having a cylindrical shape with a bottom, and an inverter housing 36. The compression unit housing 32 and the motor housing 34 have a generally cylindrical outer shape. The inverter housing 36 has a generally rectangular flat plate-like outer shape.

[0032] The rotating shaft 22 is provided in the compression unit housing 32 and the motor housing 34. The rotating shaft 22 has a cylindrical shape extending in the front-rear direction. The rotating shaft 22 is supported by the motor housing 34 and a shaft support member 37 described later so as to be rotatable about a rotation axis O.

[0033] The compression unit housing 32 and the motor housing 34 are arranged side by side in the axial direction of the rotating shaft 22. The motor housing 34 is arranged rearward of the compression unit housing 32. In the following description, the axial direction means the axial direction of the rotating shaft 22, and one side of the axial direction means the rear side of the compressor 20.

[0034] The motor housing 34 and the inverter housing 36 are arranged side by side in the radial direction of the rotating shaft 22. That is, the inverter housing 36 is arranged on a side surface of the motor housing 34. In the following description, the radial direction means the radial direction of the rotating shaft 22.

[0035] The compression unit housing 32 defines a compression chamber 32A. The motor housing 34 defines a motor chamber 34A. The inverter housing 36 defines an inverter chamber 36A. A journal member 37 is provided between the compression unit housing 32 and the motor housing 34, and the journal member 37 defines the compression chamber 32A and the motor chamber 34A. The journal member 37 has an insertion hole 37A through which the rotating shaft 22 is inserted, and supports the rotating shaft 22 rotatably.

[0036] The compression section 24 is accommodated in the compression section chamber 32A. The compression section 24 is driven by the rotation of the rotary shaft 22 to compress the refrigerant. The refrigerant is an example of the "fluid" in the present invention. The compression section 24 is connected to the refrigerant passage of the flow path box 12 via the high-pressure refrigerant hose 14. Although not shown, the motor chamber 34A is connected to the refrigerant passage of the flow path box 12 via a low-pressure refrigerant hose. The refrigerant that flows into the motor chamber 34A from the refrigerant passage of the flow path box 12 via the low-pressure refrigerant hose is sucked into the compression section 24 via a suction passage provided in the shaft support member.

[0037] Although not shown, the compression section 24 has a fixed scroll and an orbiting scroll. The compression section 24 changes the volume of a compression chamber formed between the fixed scroll and the orbiting scroll by rotating the orbiting scroll due to the rotation of the rotary shaft 22. As a result, the compression section 24 draws in and compresses refrigerant from the refrigerant passage of the flow path box 12 via the low-pressure refrigerant hose, and discharges the compressed refrigerant. The refrigerant discharged from the compression section 24 flows out into the refrigerant passage of the flow path box 12 via the high-pressure refrigerant hose 14.

[0038] The motor 26 is housed in the motor chamber 34A. Although not shown, the motor 26 has a stator and a rotor. The stator is connected to an inverter 28. The rotating shaft 22 is fixed to the rotor. When the inverter 28 supplies power to the stator, the rotor rotates, and the rotating shaft 22 rotates.

[0039] The inverter 28 is accommodated in the inverter chamber 36A. As shown in Fig. 4, the inverter 28 has an inverter circuit 28A, a control circuit 28B, and a high-voltage input filter 28C. The inverter circuit 28A drives the motor 26. The control circuit 28B controls the inverter circuit 28A. The high-voltage input filter 28C reduces noise in the power supplied from an external power source 57 via a high-voltage connector 56, which will be described later. The inverter circuit 28A, the control circuit 28B, and the high-voltage input filter 28C are each composed of a substrate, electronic components mounted on the substrate, switching elements, and the like.

[0040] The compressor 20 includes an airtight terminal 38 and three female terminals 52. The female terminals 52 are an example of the "inverter terminal" of the present invention.

[0041] As shown in FIG. 6, the airtight terminal 38 is provided on the bottom wall 34B of the motor housing 34. One axial end of the motor housing 34 is the bottom wall 34B. The bottom wall 34B is generally disk-shaped and extends radially on one axial end. A first through hole 34C (see FIG. 1) is formed in the bottom wall 34B, penetrating the bottom wall 34B in the axial direction to communicate the motor chamber 34A with the outside, and the airtight terminal 38 is disposed in the first through hole 34C. The airtight terminal 38 is fixed to the bottom wall 34B by two first fastening members 39. The airtight terminal 38 ensures airtightness in the motor chamber 34A.

[0042] The airtight terminal 38 is electrically connected to the motor 26. As shown in FIG. 11, the airtight terminal 38 has three rod-shaped conductive pins 42. An insulating member is interposed between each of the conductive pins 42. Each of the conductive pins 42 extends linearly in the axial direction and passes through the first through-hole 34C. One end of each of the conductive pins 42 is inserted into a resin terminal box 44 disposed in the motor chamber 34A (see FIG. 1). Although not shown, in the terminal box 44, three motor wires extending from the stator of the motor 26 are electrically connected to one end of each of the conductive pins 42 via connection terminals.

[0043] The other end of each conductive pin 42 serves as a connection end 46 that extends axially and protrudes from the bottom wall 34B to the outside of the motor chamber 34A.

[0044] 6, the inverter housing 36 has a communication hole 48. The communication hole 48 extends linearly in the axial direction and opens toward one side in the axial direction, connecting the inverter chamber 36A to the outside. The communication hole 48 has an oblong shape that is long in the left-right direction.

[0045] As shown in Fig. 1 and Fig. 4, each female terminal 52 is provided in the inverter housing 36. Each female terminal 52 is disposed in the inverter chamber 36A. Each female terminal 52 faces the communication hole 48 in the axial direction. As shown in Fig. 11, each female terminal 52 has a pair of clamping pieces that clamp a male terminal 68 (described later) by elastic restoring force. Each female terminal 52 has an opening end at one axial end into which the male terminal 68 is fitted. The opening end of each female terminal 52 has an opening diameter expanding toward one axial end so that the male terminal 68, which moves relatively in the axial direction, can be easily inserted.

[0046] Each female terminal 52 is electrically connected to the inverter circuit 28A via three conductive members 54 (see FIG. 4).

[0047] As shown in FIG. 6, the inverter housing 36 has an extension portion 36B. The extension portion 36B extends beyond the bottom wall 34B of the motor housing 34 in one axial direction.

[0048] 4, a distance D1 between an axial end face 36C of the extension portion 36B facing one axial direction and the bottom wall 34B is equal to or greater than a distance D2 between an axial end face 60C of an electrical connection member 60 facing one axial direction and the bottom wall 34B, which will be described later. In other words, with respect to the bottom wall 34B of the motor housing 34, the extension portion 36B protrudes in the axial direction further than the electrical connection member 60.

[0049] A high-voltage connector 56 and a communication connector 58 are connected to the extension portion 36B (see FIG. 4). The high-voltage connector 56 supplies power from an external power source 57 to the motor 26. The communication connector 58 transmits a control signal from an external control device 59, which has a lower power than the external power source 57, to the control circuit 28B of the inverter 28.

[0050] An electrical connection member 60 is disposed on the outside of the housing 30 on one side in the axial direction. The electrical connection member 60 is fixed to the bottom wall 34B of the motor housing 34 by two second fastening members 61 (see FIG. 8). When the electrical connection member 60 is attached, the electrical connection member 60 is moved in the axial direction of the rotating shaft 22 to connect each receptacle terminal 66 to the connection end 46 of each conductive pin 42, which will be described later, and also to connect each male terminal 68 to each female terminal 52, which will be described later.

[0051] 3, the electrical connection member 60 extends in a direction perpendicular to the axial direction of the rotating shaft 22 and is disposed on a virtual straight line VL passing through the rotation axis O of the rotating shaft 22. Furthermore, in the direction perpendicular to the axial direction of the rotating shaft 22, a high-voltage connector 56 and a communication connector 58 are disposed on either side of the electrical connection member 60. That is, the high-voltage connector 56 is disposed on the opposite side to the communication connector 58, with the electrical connection member 60 being disposed therebetween.

[0052] 8 to 10, the electrical connection member 60 has a housing case 62, three bus bars 64, three receptacle terminals 66, and three male terminals 68. The receptacle terminals 66 are an example of a "first terminal" in the present invention. The male terminals 68 are an example of a "second terminal" in the present invention.

[0053] The electrical connection member 60 has a body 60A and a head 60B. In a cross section perpendicular to the axial direction, the body 60A has a generally rectangular shape. In a cross section perpendicular to the axial direction (front-rear direction), the head 60B has a generally oval shape that is long in the left-right direction and has a pair of straight line portions that extend parallel to the left-right direction.

[0054] The storage case 62 has a base portion 62A made of resin, a cover portion 62B made of resin, a first seal portion 62C, and a second seal portion 62D.

[0055] In a cross section perpendicular to the axial direction, the base portion 62A and the cover portion 62B have a body portion equivalent portion having a shape corresponding to the body portion 60A in the electrical connection member 60, and a head portion equivalent portion having a shape corresponding to the head portion 60B in the electrical connection member 60.

[0056] The base portion 62A has two first insertion holes 65A, two second insertion holes 65B, three second through holes 65C, and one third insertion hole 65D. The first insertion holes 65A, the second insertion holes 65B, and the second through holes 65C are formed in the portion corresponding to the body. The third insertion hole 65D is formed in the portion corresponding to the head.

[0057] The portion of the base portion 62A corresponding to the body portion is disposed so as to surround the airtight terminal 38 provided on the bottom wall 34B. That is, the airtight terminal 38 is accommodated within the accommodation case 62, and the airtight terminal 38 is not exposed to the outside.

[0058] A first fastening member 39 for fixing the airtight terminal 38 to the bottom wall 34B is inserted into each of the first through holes 65A. A second fastening member 61 for fixing the electrical connection member 60 to the bottom wall 34B is inserted into each of the second through holes 65B. The connection end 46 of each conductive pin 42 passes through each of the second through holes 65C. The portions of the three bus bars 64 on the male terminal 68 side and a part of the housing case 62 are inserted into the third through hole 65D.

[0059] Cover portion 62B is integrated with base portion 62A, sandwiching each bus bar 64 and each receptacle terminal 66 between cover portion 62B and base portion 62A. That is, each bus bar 64 and each receptacle terminal 66 are housed within housing case 62. Cover portion 62B provides insulation between each bus bar 64.

[0060] The first seal portion 62C is made of an annular packing that surrounds the portion of the base portion 62A that corresponds to the body portion. As shown in Fig. 7, when the electrical connection member 60 is attached to the bottom wall 34B, an end face of the annular first seal portion 62C abuts against the bottom wall 34B to form a flat seal portion.

[0061] The second seal portion 62D is disposed at a portion equivalent to the head of the cover portion 62B. The second seal portion 62D is made of an annular packing having an outer circumferential surface shape corresponding to the inner circumferential surface shape of the communication hole 48 of the inverter housing 36. As shown in Fig. 7, when the electrical connection member 60 is attached to the bottom wall 34B, the outer circumferential surface of the annular second seal portion 62D abuts against the inner circumferential surface of the communication hole 48 to form a cylindrical (tubular) seal portion.

[0062] As shown in FIG. 10, the bus bar 64 is disposed so that the thickness direction of the bus bar 64 coincides with the direction perpendicular to the axial direction (the direction indicated by the arrow AR in FIG. 10). The bus bar 64 has a first flatwise bent portion 64A, a second flatwise bent portion 64B, a first edgewise bent portion 64C, a second edgewise bent portion 64D, and a third edgewise bent portion 64E. The first flatwise bent portion 64A, the second flatwise bent portion 64B, the first edgewise bent portion 64C, the second edgewise bent portion 64D, and the third edgewise bent portion 64E are arranged in this order from one end side to the other end side of the bus bar 64. That is, the bus bar 64 is bent edgewise so that the male terminal 68 is fitted into the female terminal 52, and is bent edgewise so that the position of the receptacle terminal 66 can be adjusted in the surface direction of the bottom wall 34B of the motor housing 34.

[0063] 12, one end of the bus bar 64 is thus able to swing in a direction perpendicular to the axial direction (the direction indicated by the arrow AR in FIG. 12) from the first flatwise bent portion 64A as a base point, i.e., in the plane direction of the bottom wall 34B of the motor housing 34. The bus bar 64 is accommodated in the accommodating case 62. The bus bar 64 is able to swing in the plane direction of the bottom wall 34B of the motor housing 34. In other words, the accommodating case 62 is configured so that one end of the bus bar 64 can swing in the plane direction of the bottom wall 34B of the motor housing 34 as the accommodating case 62 is moved in the plane direction of the bottom wall 34B of the motor housing 34.

[0064] The receptacle terminal 66 is fixed to one end of the bus bar 64. The receptacle terminal 66 is positioned inside the accommodating case 62. The receptacle terminal 66 is fixed inside the accommodating case 62. That is, as the accommodating case 62 is moved in the planar direction of the bottom wall 34B of the motor housing 34, the receptacle terminal 66 also moves in the planar direction of the bottom wall 34B of the motor housing 34. The diameter of the receiving opening in the receptacle terminal 66, into which the connection end 46 of the conductive pin 42 is introduced, is set to be the same as the diameter of the connection end 46 of the conductive pin 42.

[0065] Male terminal 68 is formed integrally with bus bar 64 at the other end of bus bar 64. Male terminal 68 extends linearly in the axial direction.

[0066] As shown in Fig. 9, the male terminal 68 is disposed outside the accommodating case 62. The male terminal 68 is inserted into the inverter chamber 36A through the communication hole 48. Then, as shown in Fig. 11, the male terminal 68 is connected to the female terminal 52 disposed in the inverter chamber 36A.

[0067] In this compressor 20, a bus bar 64 and a receptacle terminal 66 connected to the connection end 46 of the conductive pin 42 are accommodated in the accommodation case 62. Furthermore, the male terminal 68 is connected to the female terminal 52 inside the inverter housing 36. That is, the bus bar 64 and the receptacle terminal 66 serving as conductors connecting the conductive pin 42 and the female terminal 52 are provided outside the housing 30, but are accommodated within the accommodation case 62, and these conductors are not exposed to the outside of the housing 30. For this reason, the conductors connecting the conductive pin 42 and the female terminal 52 are less likely to be damaged, and the conductors can be protected.

[0068] In addition, in this compressor 20, a bus bar 64 having a receptacle terminal 66 at one end and a male terminal 68 at the other end is bent edgewise and flatwise into a predetermined shape. Therefore, by moving the electrical connection member 60 in the axial direction of the rotating shaft 22, the receptacle terminal 66 can be fitted into the connection end 46 of the conductive pin 42, and the male terminal 68 can be fitted into the female terminal 52.

[0069] In detail, with the male terminal 68 and the female terminal 52 aligned and temporarily fixed by fitting, one end of the bus bar 64 is swung about the first flatwise bent portion 64A as a base point in the surface direction of the bottom wall 34B perpendicular to the axial direction of the rotating shaft 22, while the accommodating case 62 is swung in the surface direction of the bottom wall 34B, thereby adjusting the position of the receptacle terminal 66 with respect to the conductive pin 42. Then, by a simple operation of moving the electrical connection member 60 in the axial direction of the rotating shaft 22 in this state, the receptacle terminal 66 can be connected to the conductive pin 42 and the male terminal 68 can be connected to the female terminal 52, thereby improving the ease of assembly of the compressor 20.

[0070] Therefore, according to this compressor 20, it is possible to protect the conductor connecting the conductive pin 42 and the female terminal 52 serving as the inverter terminal, and to improve the ease of assembly of the compressor 20.

[0071] In particular, in this compressor 20, the motor housing 34 and the inverter housing 36 are arranged side by side in the radial direction of the rotating shaft 22. Therefore, compared to the case where the motor housing 34 and the inverter housing 36 are arranged side by side in the axial direction of the rotating shaft 22, it is possible to suppress the axial length of the compressor 20 from increasing. Also, compared to the case where the motor housing 34 and the inverter housing 36 are arranged side by side in the axial direction of the rotating shaft 22, for example, the portion of the inverter housing 36 that overlaps with the bottom wall 34B of the motor housing 34 in the axial direction can be reduced, so that the portion of the compressor 20 where the axial length increases can be reduced. Furthermore, compared to the case where the motor housing 34 and the inverter housing 36 are arranged side by side in the axial direction of the rotating shaft 22, for example, the amount of protrusion of the inverter housing 36 from the motor housing 34 in the radial direction of the rotating shaft 22 can be reduced, so that it is possible to suppress the radial size of the compressor 20 from increasing, and it is possible to suppress the portion of the inverter housing 36 that protrudes in the radial direction relative to the motor housing 34 from swinging.

[0072] Furthermore, an electrical connection member 60 and an airtight terminal 38 are provided on the bottom wall 34B outside the housing 30 on one side in the axial direction of the rotating shaft 22. Therefore, it is not necessary to form a case connection portion for connecting the electrical connection member 60 and a terminal arrangement portion for arranging the airtight terminal 38 on the side surface of the motor housing 34. As a result, it is possible to reduce irregularly shaped portions in the cross-sectional shape of the motor housing 34 in the direction perpendicular to the axial direction of the rotating shaft 22, i.e., in the radial direction of the rotating shaft 22, and it is possible to ensure the airtightness of the motor housing 34 and suppress noise and vibration.

[0073] Furthermore, in a direction perpendicular to the axial direction of the rotating shaft 22, the high voltage connector 56 and the communication connector 58 are disposed on either side of the electrical connection member 60. Therefore, by locating the communication connector 58 away from the high voltage connector 56, it is possible to reduce noise propagating from the high voltage connector 56 to the communication connector 58.

[0074] In this case, as shown in Fig. 4, high-voltage input filter 28C aligned in the axial direction with high-voltage connector 56 can be positioned at the left-right ends of inverter housing 36. Therefore, as shown in Fig. 5, the lower portion of high-voltage input filter 28C, which is relatively large in the vertical direction, can be moved radially outward beyond motor housing 34. As a result, it is possible to prevent compressor 20 from becoming large in the radial direction.

[0075] Furthermore, an electrical connection member 60 is disposed below the extension portion 36B of the inverter housing 36 to which the high-voltage connector 56 and the communication connector 58 are connected, and a distance D1 between an axial end face 36C of the extension portion 36B and the bottom wall 34B is set to be greater than a distance D2 between an axial end face 60C of the electrical connection member 60 and the bottom wall 34B. Therefore, even if the electrical connection member 60 is disposed outside the housing 30 on one side of the axial direction of the rotating shaft 22, the axial length of the compressor 20 does not increase. As a result, this can contribute to reducing the axial length of the compressor 20.

[0076] Further, the entire airtight terminal 38 provided on the bottom wall 34B is accommodated within the accommodating case 62, and the airtightness of the inside of the accommodating case 62 with respect to the bottom wall 34B is ensured by the first seal portion 62C. Therefore, the motor chamber 34A can be made airtight with high reliability.

[0077] Although the present invention has been described above with reference to the embodiments, it goes without saying that the present invention is not limited to the above embodiments and can be modified as appropriate without departing from the spirit of the present invention.

[0078] For example, in the compressor of the embodiment, the busbar 64 has the first flatwise bent portion 64A, the second flatwise bent portion 64B, the first edgewise bent portion 64C, the second edgewise bent portion 64D, and the third edgewise bent portion 64E, but the present invention is not limited to this. For example, the first edgewise bent portion 64C and the second edgewise bent portion 64D may be omitted.

[0079] In the compressor of the embodiment, the diameter of the receiving opening in the receptacle terminal 66 into which the connection end 46 of the conductive pin 42 is introduced is the same as the diameter of the connection end 46 of the conductive pin 42, but the present invention is not limited to this. For example, as shown in Fig. 13, the opening diameter R1 of the receiving opening 66A of the receptacle terminal 66 may be larger than the diameter R2 of the connection end 46 of the conductive pin 42. In this case, it becomes easier to adjust the position of the receptacle terminal 66 relative to the conductive pin 42, and the assembly workability of the electric compressor can be further improved.

[0080] In the compressor of the embodiment, the base portion 62A and the cover portion 62B of the housing case 62 are made of resin, but the present invention is not limited to this. For example, the cover 62B may be made of metal to block electromagnetic noise.

[0081] The following technical ideas can be extracted from the disclosure of the specification, drawings, etc.

[0082] (Appendix 1) A rotation axis; a compression section that is driven by rotation of the rotary shaft to compress a fluid; A motor that rotates the rotary shaft; an inverter having an inverter circuit for driving the motor; an inverter housing that houses the inverter; a cylindrical motor housing having a bottom, the motor housing housing having an inner peripheral surface thereof and an inverter chamber having an outer peripheral surface thereof and housing the inverter therein; a compression section housing having a bottom and a cylindrical shape that houses the compression section; a shaft support member that is provided between the motor housing and the compression unit housing, defines, together with the motor housing, a motor chamber that houses the motor, and defines, together with the compression unit housing, a compression unit chamber that houses the compression unit, and has an insertion hole through which the rotation shaft is inserted and rotatably supports the rotation shaft; a conductive pin that is inserted into a first through hole formed in a bottom wall of the motor housing and is held relative to the first through hole and is electrically connected to the motor; an inverter terminal provided inside the inverter housing and electrically connected to the inverter circuit; an electrical connection member that electrically connects the conductive pin and the inverter terminal; the electrical connection member includes a plate-shaped bus bar, a first terminal provided at one end of the bus bar and to which the conductive pin is connected outside the motor housing, a second terminal provided at the other end of the bus bar and to which the inverter terminal is connected inside the inverter housing, and an accommodating case that accommodates the first terminal and the bus bar, has a second through hole through which the conductive pin can pass toward the first terminal, and is fixed to a bottom wall of the motor housing, an electrically connected member being moved in the axial direction of the rotating shaft, the first terminal being engaged with the conductive pin, and the bus bar being bent so that the second terminal being engaged with the inverter terminal.

[0083] (Appendix 2) the first terminal has a receptacle terminal into which the conductive pin is fitted in the axial direction, The second terminal extends in an axial direction, the bus bar has an edgewise bent portion that is bent edgewise so that the second terminal is fitted into the inverter terminal, and a pair of flatwise bent portions that are bent flatwise between the edgewise bent portion and the receptacle terminal so that a position of the receptacle terminal can be adjusted in a surface direction of the bottom wall of the motor housing perpendicular to the axial direction.

[0084] (Appendix 3) The receptacle terminal has a receiving opening into which the conductive pin is inserted, 3. The electric compressor according to claim 2, wherein a diameter of the receiving opening is larger than a diameter of the conductive pin.

[0085] (Appendix 4) A high-voltage connector for supplying power from an external power supply to the motor and a communication connector for transmitting a control signal from an external control device having a smaller power than that of the external power supply to the inverter are connected to the inverter housing; 4. The electric compressor according to claim 1, wherein the high-voltage connector is disposed on an opposite side to the communication connector with the electrical connection member interposed therebetween.

[0086] (Appendix 5) the inverter housing has an extension portion extending in the axial direction beyond the bottom wall of the motor housing, The electric compressor according to any one of claims 1 to 4, wherein the extension portion protrudes in the axial direction further than the electrical connection member from the bottom wall of the motor housing. [Industrial Applicability]

[0087] The present invention can be used in air conditioning systems for vehicles and the like. [Explanation of symbols]

[0088] 20...Electric compressor 22...Rotation axis 24…Compression section 26…Motor 28…Inverter 28A…Inverter circuit 32…Compression section housing 32A…Compression chamber 34…Motor housing 34A…Motor room 34B…Bottom wall 34C…1st through hole 36…Inverter housing 36A…Inverter room 36B...Extension part 37... Support member 37A…Through hole 42...Conductive pin 52...Female terminal (inverter terminal) 56…High voltage connector 57…External power supply 58…Communication connector 59...External control device 60...Electrical connection member 62…Storage case 64…Busbar 64A…First flatwise bend 64B…Second flatwise bend 64C…First edgewise bend 64D…Second edgewise bending section 64E…Third edgewise bend 65C…Second through hole 66...Receptacle terminal (first terminal) 66A…Receiving opening 68...Male terminal (second terminal)

Claims

1. A rotation axis; a compression section that is driven by rotation of the rotary shaft to compress a fluid; A motor that rotates the rotary shaft; an inverter having an inverter circuit for driving the motor; an inverter housing that houses the inverter; a cylindrical motor housing having a bottom, the motor housing housing having an inner peripheral surface thereof and an inverter chamber having an outer peripheral surface thereof and housing the inverter therein; a compression section housing having a bottom and a cylindrical shape that houses the compression section; a shaft support member that is provided between the motor housing and the compression unit housing, defines, together with the motor housing, a motor chamber that houses the motor, and defines, together with the compression unit housing, a compression unit chamber that houses the compression unit, and has an insertion hole through which the rotation shaft is inserted and rotatably supports the rotation shaft; a conductive pin that is inserted into a first through hole formed in a bottom wall of the motor housing and is held relative to the first through hole and is electrically connected to the motor; an inverter terminal provided inside the inverter housing and electrically connected to the inverter circuit; an electrical connection member that electrically connects the conductive pin and the inverter terminal; the electrical connection member includes a plate-shaped bus bar, a first terminal provided at one end of the bus bar and to which the conductive pin is connected outside the motor housing, a second terminal provided at the other end of the bus bar and to which the inverter terminal is connected inside the inverter housing, and a housing case that houses the first terminal and the bus bar, has a second through hole through which the conductive pin can pass toward the first terminal, and is fixed to a bottom wall of the motor housing, an electrically connected bus bar is bent so that the first terminal and the conductive pin are engaged with each other and the second terminal and the inverter terminal are engaged with each other by moving the electrical connection member in the axial direction of the rotating shaft.

2. the first terminal has a receptacle terminal into which the conductive pin is fitted in the axial direction, The second terminal extends in the axial direction, 2. The electric compressor according to claim 1, wherein the bus bar has an edgewise bent portion that is bent edgewise so that the second terminal is fitted into the inverter terminal, and a pair of flatwise bent portions that are bent flatwise between the edgewise bent portion and the receptacle terminal so that a position of the receptacle terminal can be adjusted in a surface direction of the bottom wall of the motor housing perpendicular to the axial direction.

3. The receptacle terminal has a receiving opening into which the conductive pin is inserted, 3. The electric compressor according to claim 2, wherein a diameter of the receiving opening is larger than a diameter of the conductive pin.

4. A high-voltage connector for supplying power from an external power supply to the motor and a communication connector for transmitting a control signal from an external control device having a smaller power than that of the external power supply to the inverter are connected to the inverter housing; 3. The electric compressor according to claim 1, wherein the high-voltage connector is disposed on the opposite side to the communication connector with the electrical connection member interposed therebetween.

5. the inverter housing has an extension portion extending in the axial direction beyond the bottom wall of the motor housing, 3. The electric compressor according to claim 1, wherein the extension protrudes in the axial direction from the bottom wall of the motor housing further than the electrical connection member.

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