Electric compressor

Abstract

To make a circuit board hard to bend even when a tip part of a connection terminal hits the circuit board, when mounting the circuit board of an inverter.SOLUTION: An electric compressor 100 includes: an electric motor 110; a rotary shaft 120; a compression mechanism 130; an inverter 140; a housing 150 in which a first storage chamber 150A for storing the electric motor 110, the rotary shaft 120 and the compression mechanism 130 and a second storage chamber 150B for storing the inverter 140 are formed; a hermetic terminal 170 provided at a partition wall part 152 for partitioning the first storage chamber 150A and the second storage chamber 150B; and a connection terminal 180 for connecting the hermetic terminal 170 and the inverter 140. Then, between the hermetic terminal 170 and the connection terminal 180, a plurality of insertion holes where each terminal part of the hermetic terminal 170 can be inserted, and a terminal reception member 190 where a terminal reception surface for receiving the connection terminal 180 is formed are arranged.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an electric compressor that compresses a refrigerant. [Background technology]

[0002] As described in JP 2015-115969 A (Patent Document 1), an electric compressor that compresses a refrigerant includes an electric motor such as a three-phase brushless motor, a compression mechanism driven by the electric motor, and an inverter that drives and controls the electric motor. The inverter converts a direct current supplied from a direct current power source into an alternating current and sequentially supplies the alternating current to each phase coil of the electric motor, thereby rotating the electric motor at a desired rotation speed. In such an electric compressor, each phase coil of the electric motor is electrically connected to a circuit board of the inverter via a hermetic terminal and a connection terminal connected thereto. Here, the tip of the connection terminal is pin-shaped, and is soldered through a through hole in the circuit board. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-115969 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the process of assembling an electric compressor, a connection terminal is attached to a hermetic terminal, a circuit board is placed above the connection terminal, and the tip of the connection terminal protruding from the through hole of the circuit board is soldered. If the through hole of the circuit board is not properly positioned relative to the tip of the connection terminal, the tip of the connection terminal may come into contact with the circuit board and bend. If the connection terminal is bent, the tip of the connection terminal cannot protrude from the through hole of the circuit board, and it becomes impossible to solder the connection terminal.

[0005] SUMMARY OF THE PRESENT DISCLOSURE An object of the present invention is to provide an electric compressor in which the tips of connection terminals are less likely to bend even when they come into contact with a circuit board when mounting a circuit board of an inverter that drives an electric motor. [Means for solving the problem]

[0006] The electric compressor includes an electric motor, a rotating shaft rotated by the electric motor, a compression mechanism driven by the rotating shaft, an inverter for driving the electric motor, and a housing in which a first storage chamber for accommodating the electric motor, the rotating shaft, and the compression mechanism, and a second storage chamber for accommodating the inverter are formed. The electric compressor further includes a hermetic terminal provided in a partition wall that separates the first storage chamber from the second storage chamber of the housing, the hermetic terminal having a plurality of terminal portions electrically connected to the electric motor, and a connection terminal that electrically connects the terminal portion of the hermetic terminal to the inverter. A terminal receiving member is disposed between the hermetic terminal and the connection terminal, and the terminal receiving member has a plurality of insertion holes through which the terminal portions of the hermetic terminal can be inserted, and a terminal receiving surface that receives the connection terminal. Effect of the Invention

[0007] According to the present invention, when mounting a circuit board of an inverter that drives an electric motor in an electric compressor, the tip of a connection terminal attached to a hermetic terminal can be made less likely to bend even if it hits the circuit board. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a vertical cross-sectional view showing an example of an electric compressor. [Diagram 2] 1 is a perspective view showing an example of a mounting structure of an inverter circuit unit to a housing; [Diagram 3] FIG. 3 is an enlarged perspective view of part A in FIG. 2. [Figure 4] FIG. 4 is a perspective view showing an example of a connection terminal. [Diagram 5] FIG. 4 is a perspective view showing an example of a terminal receiving member as viewed from above. [Figure 6]FIG. 4 is a perspective view showing an example of a terminal receiving member as viewed from below. [Figure 7] 4 is an enlarged perspective view showing an example of an opening formed in an inverter circuit board; FIG. [Figure 8] 4A to 4C are diagrams illustrating a method for assembling a hermetic terminal. [Figure 9] 5A to 5C are explanatory diagrams of a method for assembling the terminal receiving member. [Figure 10] 6A to 6C are explanatory diagrams of a method for fixing the terminal receiving member. [Figure 11] 5A to 5C are diagrams illustrating a method for assembling the connection terminals. [Figure 12] 5A to 5C are diagrams illustrating a method for assembling the inverter circuit board. [Figure 13] 5A and 5B are explanatory diagrams of a receiving structure of a connection terminal by a terminal receiving member. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, with reference to the attached drawings, an embodiment for carrying out the present invention will be described in detail. Note that the terms "first", "second", etc. used in the following description are merely used to distinguish similar elements, and do not limit the elements to which they are attached. In addition, the embodiment described below is merely an example, and should not be construed as being limited to the configuration.

[0010] 1 shows an example of an inverter-integrated electric compressor 100 to which the present invention can be applied. The electric compressor 100 is incorporated in a refrigerant circuit (not shown) of an air conditioner mounted on a vehicle, for example, and configured to compress and discharge a refrigerant.

[0011] The electric compressor 100 includes an electric motor 110, a rotating shaft 120 driven by the electric motor 110, a compression mechanism 130 driven by the rotating shaft 120, an inverter 140 that drives the electric motor 110, and a housing 150 that accommodates the electric motor 110, the rotating shaft 120, the compression mechanism 130, and the inverter 140. The internal space of the housing 150 is partitioned by a partition portion 152 into a first accommodation chamber 150A that accommodates the electric motor 110, the rotating shaft 120, and the compression mechanism 130, and a second accommodation chamber 150B that accommodates the inverter 140.

[0012] The electric motor 110 is, for example, a three-phase brushless motor, and is configured such that a magnetic field is generated by sequentially supplying an AC current to a U-phase coil, a V-phase coil, and a W-phase coil wound around the teeth of a stator, and a rotor including a permanent magnet arranged inside the coil rotates. The rotating shaft 120 is rotatably supported by a housing 150 by a bearing (not shown), and its middle part is press-fitted into the center of the rotor. Therefore, when the electric motor 110 rotates, the rotating shaft 120 rotates together with the rotor. The compression mechanism 130 is, for example, a well-known compression mechanism such as a scroll type compression mechanism or a rotary type compression mechanism, and is driven by the rotating shaft 120. Note that the scroll type compression mechanism, the rotary type compression mechanism, and the like are compression mechanisms well known to those skilled in the art, and therefore detailed description thereof will be omitted.

[0013] The inverter 140 has an inverter circuit section 142 that converts DC current supplied from a DC power source into AC current and supplies the AC current to the electric motor 110, and a filter circuit section 144 that reduces electromagnetic noise. Note that the inverter circuit section 142 is supplied with DC current from, for example, an on-board battery, which is an example of a DC power source, via an HV connector 160 attached to a predetermined location of the housing 150.

[0014] The inverter circuit section 142 includes six power switching elements 142A, a control circuit 142B that controls the six power switching elements 142A, and an inverter circuit board 142C on which the control circuit 142B is mounted. The six power switching elements 142A are placed on the upper surface of a sheet-like first heat dissipation member 142D arranged on the wall surface of the partition wall portion 152 of the housing 150 facing the second accommodation chamber 150B. Each of the six power switching elements 142A is fixed in a state in which it is pressed against the first heat dissipation member 142D by an arm member 142E. Each terminal of the six power switching elements 142A penetrates a through hole 142C1 formed in the inverter circuit board 142C and is soldered to a wiring pattern, thereby being electrically connected to the inverter circuit board 142C.

[0015] The inverter circuit board 142C of the inverter circuit section 142 is electrically connected to each phase coil wound around the stator of the electric motor 110 via a hermetic terminal 170 and a connection terminal 180 provided at a predetermined position of the partition wall portion 152 of the housing 150. Details of the hermetic terminal 170 and the connection terminal 180 and the connection structure between them and the inverter circuit board 142C will be described later.

[0016] The filter circuit section 144 includes a first filter circuit board 144A and a second filter circuit board 144B.

[0017] At least one electrolytic capacitor 144A1 is mounted upright on one surface (the surface facing upward in FIG. 1) of the first filter circuit board 144A as an example of a first filter component for electromagnetic noise countermeasures. The first filter circuit board 144A also has a plurality of electronic components (not shown) mounted thereon that are smaller than the electrolytic capacitor 144A1. At least some of the small electronic components are mounted on the other surface (the surface facing downward in FIG. 1) of the first filter circuit board 144A at locations that avoid the arrangement position of the electrolytic capacitor 144A1.

[0018] On one surface (the surface facing downward in FIG. 1) of the second filter circuit board 144B, a normal mode choke coil 144B1, a common mode choke coil 144B2, an X capacitor, and a Y capacitor (not shown) are mounted as an example of second filter components for electromagnetic noise countermeasures. Note that the second filter circuit board 144B also has a plurality of electronic components (not shown) mounted thereon that are smaller than the normal mode choke coil 144B1, the common mode choke coil 144B2, the X capacitor, and the Y capacitor. At least some of the small electronic components are mounted on the other surface (the surface facing upward in FIG. 1) of the second filter circuit board 144B, in a location that avoids the arrangement positions of the normal mode choke coil 144B1, the common mode choke coil 144B2, the X capacitor, and the Y capacitor.

[0019] The first filter circuit board 144A and the second filter circuit board 144B are electrically connected and integrated with a plate-shaped resin member 144C. A first case member 144D made of hard resin or the like is attached to one surface of the first filter circuit board 144A so as to accommodate a plurality of electrolytic capacitors 144A1. A second case member 144E made of hard resin or the like is attached to one surface of the second filter circuit board 144B so as to accommodate a normal mode choke coil 144B1, a common mode choke coil 144B2, an X capacitor, and a Y capacitor. The inside of the first case member 144D and the second case member 144E is filled with a heat-resistant resin R, which improves protection and heat dissipation of the plurality of electrolytic capacitors 144A1, the normal mode choke coil 144B1, the common mode choke coil 144B2, and the like arranged therein. In this way, the filter circuit section 144 is modularized.

[0020] As described above, the internal space of the housing 150 is partitioned by the partition 152 into a first storage chamber 150A having a substantially cylindrical shape that accommodates the electric motor 110, the rotating shaft 120, and the compression mechanism 130, and a second storage chamber 150B having a substantially rectangular parallelepiped shape that accommodates the inverter 140. Note that the cylindrical shape and the rectangular parallelepiped shape are not limited to strict cylindrical shapes and rectangular parallelepiped shapes, but include shapes that can be recognized as cylindrical shapes and rectangular parallelepiped shapes at a glance (the same applies to shapes below). The second storage chamber 150B is partitioned by the partition 152, a peripheral wall 154 that rises from the periphery of the partition 152 toward the inverter 140, and a lid 156 that is detachably joined to the opening of the peripheral wall 154.

[0021] The first housing chamber 150A accommodates the compression mechanism 130 and the electric motor 110 integrated with the rotating shaft 120 in this order from a distal portion to a proximal portion with respect to the second housing chamber 150B. Also, the second housing chamber 150B accommodates the inverter circuit section 142 at a portion overlapping with the first housing chamber 150A when viewed from the axial direction of the rotating shaft 120, and accommodates the modularized filter circuit section 144 at a portion spaced from this portion.

[0022] 1, the inverter circuit section 142 and the filter circuit section 144 are electrically connected. At this time, sheet-like second heat dissipation member 144F and third heat dissipation member 144G are respectively disposed between the filter circuit section 144 and the inner surface of the housing 150 that partitions the second accommodation chamber 150B. Therefore, the amount of heat transferred from the filter circuit section 144 to the housing 150 increases, thereby improving the heat dissipation performance of the filter circuit section 144.

[0023] Here, the hermetic terminal 170, the connection terminal 180, and the connection structure between these and the inverter circuit board 142C will be described in detail.

[0024] As shown in Figs. 2 and 3, a hermetic terminal 170 is provided at a predetermined position of the partition wall 152 of the housing 150 facing the second accommodation chamber 150B. The hermetic terminal 170 includes a first plate portion 170A that ensures an airtight state between the first accommodation chamber 150A and the second accommodation chamber 150B, three pin-shaped terminal portions 170B that vertically penetrate the plate surface of the first plate portion 170A, and a second plate portion 170C that receives the first plate portion 170A. The first plate portion 170A is made of insulating silicone rubber and is formed, for example, in an elliptical shape in a plan view. The three terminal portions 170B are made of a conductive metal material and are arranged in a straight line with a space between them with respect to the first plate portion 170A. The second plate portion 170C is made of a cold-rolled steel plate that ensures an insulating distance from the three terminal portions 170B, and is formed, for example, in an elliptical shape larger than the first plate portion 170A in a plan view. Here, a pedestal portion (not shown) that receives the second plate portion 170C of the hermetic terminal 170 is formed on the wall surface of the partition wall portion 152 facing the second accommodation chamber 150B. Furthermore, a peripheral portion 170D that rises vertically from the plate surface of the second plate portion 170C is formed on the periphery of the second plate portion 170C. Here, the first plate portion 170A and the second plate portion 170C are given as examples of plate portions. In this embodiment, as shown in FIG. 1, the terminal portion 170B of the hermetic terminal 170 extends to a position beyond the inverter circuit board 142C of the inverter circuit portion 142 accommodated in the second accommodation chamber 150B, but this is not limited thereto.

[0025] The connection terminal 180 is a terminal that electrically connects the terminal portion 170B of the hermetic terminal 170 and the inverter circuit board 142C of the inverter circuit unit 142, and is made of, for example, an elastically deformable thin metal plate. As shown in Fig. 4, the connection terminal 180 has a press-fit portion 180A that is press-fitted into the terminal portion 170B of the hermetic terminal 170, and a protrusion portion 180B that is solder-joined through a through-hole 142C2 (see Fig. 2) formed in the inverter circuit board 142C.

[0026] The press-fitting portion 180A is made of a rectangular tube member having two open faces in the direction in which the terminal portion 170B of the hermetic terminal 170 extends, and a pair of guide portions 180A1 for guiding the tip portion of the terminal portion 170B is integrally formed at the middle portion of the two faces that sandwich the terminal portion 170B. Here, the tip portion of the guide portion 180A1 (the end portion located at the bottom in FIG. 4) is formed in a shape following the tip portion of the terminal portion 170B, so that the tip portion of the terminal portion 170B can be guided to the press-fitting portion 180A while preventing it from easily coming off. Therefore, when the press-fitting portion 180A is pushed toward the hermetic terminal 170 with the guide portion 180A1 aligned with the tip portion of the terminal portion 170B of the hermetic terminal 170, the press-fitting portion 180A can be aligned with the terminal portion 170B at the same time. In addition, both ends of the end of the press-in portion 180A located on the hermetic terminal 170 side are connected by a rectangular metal plate parallel to the plate surface of the terminal receiving member 190, for the purpose of improving adhesion to the terminal receiving member 190, the details of which will be described later.

[0027] The protrusion 180B is made of a flat plate member having an L-shape in a side view, which extends outward from the end of the press-fit portion 180A located on the hermetic terminal 170 side by a predetermined dimension, and then bends and extends vertically toward the inverter circuit board 142C. By making the protrusion 180B from a flat plate member, it is possible to reduce costs compared to a pin-shaped one. Here, the tip of the protrusion 180B is formed in a tapered shape whose width gradually narrows toward the tip. In addition, the part of the protrusion 180B extending outward from the end of the press-fit portion 180A is arranged flush with the end of the press-fit portion 180A located on the hermetic terminal 170 side. In order to ensure the strength of the part of the protrusion 180B extending outward from the end of the press-fit portion 180A, as shown in FIG. 4, a rectangular reinforcing part 180C may be integrally joined perpendicularly to this part.

[0028] A terminal receiving member 190 made of, for example, hard resin is disposed between the hermetic terminal 170 and the connection terminal 180. As shown in Fig. 5 and Fig. 6, the terminal receiving member 190 has a main body portion 192 having a rectangular shape in a plan view, and a pair of semicircular mounting portions 194 integrally joined to both ends of the main body portion 192 in the longitudinal direction.

[0029] The main body 192 is formed with three insertion holes 192A into which the three terminal portions 170B of the hermetic terminal 170 can be inserted. One surface of the main body 192 located on the connection terminal 180 side functions as a terminal receiving surface that receives the connection terminal 180. Therefore, the one surface of the main body 192 is formed in a flat shape.

[0030] In addition, on one surface of the main body 192, an annular outer edge rib 192B extending from the outer edge toward the connection terminal 180 and an insulating rib 192C for securing the insulating distance of each terminal portion 170B of the hermetic terminal 170 inserted through the insertion hole 192A are integrally formed. Here, when the connection terminal 180 press-fitted into the terminal portion 170B of the hermetic terminal 170 tries to rotate due to an external force, a part of the connection terminal 180 comes into contact with the outer edge rib 192B to suppress the rotation. The insulating rib 192C connects the outer edge ribs 192B located on both sides of the main body 192 in the longitudinal direction at two points so as to divide the three insertion holes 192A formed in the main body 192. The height of at least a part of the insulating rib 192C relative to the main body 192 is higher than the height of the outer edge rib 192B to reliably secure the insulating distance of each terminal portion 170B of the hermetic terminal 170. In other words, the height of the outer edge rib 192B is lower than the height of the insulating rib 192C. Therefore, by integrally providing the insulating rib 192C with the terminal receiving member 190, it becomes possible to handle high voltages, thereby improving safety.

[0031] In the mounting portion 194, a bolt insertion hole 194A is formed through which, for example, the shaft portion of a bolt 200, which is an example of a fastening member, can be inserted in order to fix the terminal receiving member 190 to the partition portion 152 of the housing 150 with the hermetic terminal 170 interposed therebetween. For this reason, in the vicinity of the base portion 152A formed on the wall surface of the partition portion 152 facing the second housing chamber 150B, a bolt fastening hole 152B into which the bolt 200 for fixing the terminal receiving member 190 to the partition portion 152 is fastened is formed as shown in FIG.

[0032] 6, a recess 192D capable of accommodating the first plate portion 170A of the hermetic terminal 170 is formed on the other surface of the main body 192 located on the hermetic terminal 170 side. Here, the depth of the recess 192D of the main body 192 can be, for example, the same as or slightly larger than the thickness of the first plate portion 170A of the hermetic terminal 170. In this way, when the terminal receiving member 190 is fixed to the partition wall portion 152 of the housing 150 by the bolt 200, the hermetic terminal 170 can be fastened together by the bolt 200 while avoiding interference with the first plate portion 170A made of silicone rubber, thereby reducing the cost of the assembly work. In addition, a protrusion 194B capable of fitting into the inner wall of the peripheral portion 170D of the hermetic terminal 170 is formed on both sides of the base end of the mounting portion 194.

[0033] Such a terminal receiving member 190 receives the press-fit portion 180A and the end of the protrusion 180B of the connection terminal 180 on one surface thereof, and can make the tip of the protrusion 180B less likely to bend even if an external force acts on it.

[0034] In a state where the hermetic terminal 170, the connection terminal 180, and the terminal receiving member 190 are assembled to the housing 150, the tip of the terminal portion 170B of the hermetic terminal 170 and the press-fit portion 180A of the connection terminal 180 interfere with the inverter circuit board 142C of the inverter circuit part 142. Therefore, in this embodiment, as shown in Fig. 2 and Fig. 7, an opening 142C3 is formed at a predetermined position of the inverter circuit board 142C to avoid interference between the terminal portions 170B of the hermetic terminal 170 and the press-fit portion 180A of the connection terminal 180. It goes without saying that if there is no interference between the hermetic terminal 170 and the connection terminal 180 and the inverter circuit board 142C, there is no need to form the opening 142C3 in the inverter circuit board 142C.

[0035] Here, a procedure for assembling the hermetic terminal 170, the connection terminal 180, and the terminal receiving member 190 to the housing 150, and a procedure for connecting the inverter circuit board 142C of the inverter circuit section 142 to the connection terminal 180 will be described.

[0036] First, as shown in Fig. 8, the worker inserts the terminal portion 170B of the hermetic terminal 170 into a mounting hole (not shown) of the hermetic terminal 170 formed at a predetermined position of the partition wall portion 152 of the housing 150, and places the second plate portion 170C of the hermetic terminal 170 on the upper surface of the base portion formed on the partition wall portion 152. Next, as shown in Fig. 9, the worker places the terminal receiving member 190 on the upper surface of the second plate portion 170C of the hermetic terminal 170 while inserting the terminal portion 170B of the hermetic terminal 170 into the insertion hole 192A of the terminal receiving member 190. At this time, the first plate portion 170A of the hermetic terminal 170 is accommodated in the recess 192D formed on the other surface of the terminal receiving member 190, so that interference with the first plate portion 170A made of silicone rubber can be avoided. Furthermore, the tip portion of the attachment portion 194 of the terminal receiving member 190 and the two protrusions 194B fit into the inner wall of the peripheral portion 170D of the hermetic terminal 170, so that the terminal receiving member 190 is positioned relative to the hermetic terminal 170.

[0037] 10, an operator inserts the shaft portion of bolt 200 into bolt insertion hole 194A of terminal receiving member 190, and screws bolt 200 into bolt fastening hole 152B formed in partition wall portion 152 of housing 150 to fasten them. At this time, since terminal receiving member 190 is positioned relative to housing 150 and terminal receiving member 190 has already been positioned relative to hermetic terminal 170, hermetic terminal 170 is also positioned relative to housing 150 at the same time.

[0038] 11, the worker presses the press-fit portion 180A of the connection terminal 180 from above into each terminal portion 170B of the hermetic terminal 170 protruding from the upper surface of the terminal receiving member 190. At this time, since the guide portion 180A1 is formed in the press-fit portion 180A of the connection terminal 180, the worker simply aligns the tip end of the guide portion 180A1 with the tip end of the terminal portion 170B of the hermetic terminal 170 and presses the connection terminal 180 toward the terminal receiving member 190. This makes it possible to easily press the connection terminal 180 into the hermetic terminal 170.

[0039] In addition, in a state where the connection terminal 180 is press-fitted into the terminal portion 170B of the hermetic terminal 170, if a certain degree of external force acts on the connection terminal 180, the connection terminal 180 can rotate around the central axis of the terminal portion 170B. Also, as shown in Fig. 11, if the protrusions 180B of each connection terminal 180 can be arranged to spread out in a fan shape with respect to each terminal portion 170B of the hermetic terminal 170, the insulation distance of each protrusion 180B can be secured. Here, each connection terminal 180 press-fitted into each terminal portion 170B of the hermetic terminal 170 may have the same shape, or the length of the protrusion 180B relative to the press-fit portion 180A may be different.

[0040] 12, the worker aligns the through-hole 142C2 of the inverter circuit board 142C with the tip of the protrusion 180B of the connection terminal 180 press-fitted into the hermetic terminal 170, and pushes the inverter circuit board 142C toward the partition wall 152 of the housing 150. At this time, as shown in FIG 13, since the lower surface of the connection terminal 180 is entirely supported by the upper surface of the terminal receiving member 190, bending of the protrusion 180B of the connection terminal 180 can be suppressed even if the inverter circuit board 142C is not sufficiently aligned with the protrusion 180B of the connection terminal 180.

[0041] Furthermore, because the tip of the protrusion 180B of the connection terminal 180 is formed in a tapered shape, even if the tip of the protrusion 180B of the connection terminal 180 is slightly misaligned with respect to the through hole 142C2 of the inverter circuit board 142C, the connection terminal 180 will not rotate around the terminal portion 170B of the hermetic terminal 170, causing a malfunction. Thereafter, the worker solders the tip of the protrusion 180B of the connection terminal 180 protruding from the through hole 142C2 of the inverter circuit board 142C, thereby establishing an electrical connection between the electric motor 110 and the inverter circuit board 142C.

[0042] In this manner, by assembling the hermetic terminal 170, the connection terminal 180, and the terminal receiving member 190 to the housing 150, for example, it is no longer necessary to previously sub-assemble them in a separate process, which can reduce costs.

[0043] Next, the operation of the electric compressor 100 will be described. When the inverter 140 converts a direct current into an alternating current and sequentially supplies the alternating current to each phase coil of the electric motor 110, the electric motor 110 is operated and the rotating shaft 120 is rotated. The rotation of the rotating shaft 120 operates the compression mechanism 130, and the pressure in the first housing chamber 150A in which the compression mechanism 130 is disposed becomes negative, and low-pressure refrigerant is sucked into the first housing chamber 150A from a refrigerant suction hole (not shown) formed in a predetermined position of the housing 150. The low-pressure refrigerant sucked into the first housing chamber 150A passes around the electric motor 110 and cools the electric motor 110, while being introduced into the compression mechanism 130. The low-pressure refrigerant introduced into the compression mechanism 130 is compressed by a change in the volume of the compression chamber, and is then discharged from a refrigerant discharge hole (not shown) formed in a predetermined position of the housing 150, for example, to the high-pressure side of a refrigerant circuit of an air conditioner mounted on a vehicle.

[0044] The compression of refrigerant by the electric compressor 100 is well known to those skilled in the art, and therefore will not be described in further detail.

[0045] Furthermore, a person skilled in the art will easily understand that new embodiments can be created by omitting parts of the technical ideas of the various above-mentioned embodiments, combining parts of them appropriately, or replacing parts of them with well-known technology.

[0046] As one example, the tip of protrusion 180B of connection terminal 180 is not limited to a flat plate shape, but may be a pin shape similar to the prior art. In addition, inverter circuit section 142 accommodated in second accommodation chamber 150B of housing 150 is not limited to a single inverter circuit board 142C, but may be a multi-layer inverter circuit board 142C. [Explanation of symbols]

[0047] 100...Electric compressor 110...Electric motor 120…Rotation axis 130…Compression mechanism 140…Inverter 142C…Inverter circuit board 142C2…Through hole 142C3…Opening 150…Housing 150A…First containment chamber 150B…Second containment chamber 152...Partition wall part 170...Hermetic terminal 170A…First plate section (plate section) 170B…Terminal section 170C…Second plate section (plate section) 180…Connection terminal 180A…Press-fit section 180B…Protrusion 190...Terminal receiving member 192A…Through hole 192B…Outer edge rib 192C…Insulating rib 192D…Concave

Claims

1. An electric motor; A rotating shaft rotated by the electric motor; a compression mechanism driven by the rotating shaft; an inverter that drives the electric motor; a housing in which a first storage chamber that accommodates the electric motor, the rotating shaft, and the compression mechanism, and a second storage chamber that accommodates the inverter are formed; a hermetic terminal provided in a partition wall that separates the first chamber and the second chamber of the housing, the hermetic terminal having a plurality of terminal portions electrically connected to the electric motor; a connection terminal that electrically connects a terminal portion of the hermetic terminal and the inverter; a terminal receiving member disposed between the hermetic terminal and the connection terminal, the terminal receiving member having a plurality of insertion holes through which the terminal portions of the hermetic terminal can be inserted and a terminal receiving surface for receiving the connection terminal; An electric compressor equipped with

2. The terminal receiving member has a recess capable of accommodating a part of the plate portion of the hermetic terminal. The electric compressor according to claim 1 .

3. the connection terminal has a press-fit portion that is press-fitted into the terminal portion of the hermetic terminal, and a protrusion that penetrates a through hole of a circuit board of the inverter and is solder-joined, The terminal receiving member receives the press-fit portion and the protrusion portion. The electric compressor according to claim 1 .

4. The protrusion is formed in a flat plate shape. The electric compressor according to claim 3.

5. The tip of the protrusion is formed in a tapered shape in which the width gradually narrows toward the tip. The electric compressor according to claim 4.

6. The terminal receiving member has an insulating rib that ensures an insulating distance between each terminal portion of the hermetic terminal. The electric compressor according to claim 1 .

7. The terminal receiving member has an annular outer edge rib that extends from an outer edge of the plate portion toward the connection terminal and is lower in height than the insulating rib. The electric compressor according to claim 6.

8. the circuit board of the inverter has an opening for avoiding interference with each terminal portion of the hermetic terminal and the press-fit portion of the connection terminal; The electric compressor according to claim 1 .

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