Electric compressor

Abstract

To provide an electric compressor that allows a worker to easily confirm that a lead is connected to a connecting terminal.SOLUTION: A case 41 is provided with an exposure hole 47 from which a lead 29 is exposed on a side of the case opposite to an insertion port 46 across a connecting terminal 44. Thus, when the lead 29 is connected to the connecting terminals 44, the lead 29 is exposed from the exposure hole 47. Accordingly, a worker can easily confirm that the lead 29 is connected to the connecting terminal 44.SELECTED DRAWING: Figure 2

Description

[Technical Field]

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

[0002] The electric compressor includes a compression unit and a motor. The compression unit compresses a fluid. The motor drives the compression unit. The electric compressor also includes an inverter, as in Patent Document 1, for example. The inverter drives the motor. The inverter has a circuit board. The inverter also includes a connector mounted on the circuit board, as in Patent Document 2, for example. The connector has a case that houses connection terminals. The case has an insertion opening through which a lead is inserted. The connection terminals electrically connect the leads to a pattern formed on the circuit board. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-203448 [Patent Document 2] Japanese Patent Application Publication No. 2022-137909 Summary of the Invention [Problem to be solved by the invention]

[0004] In such electric compressors, a circuit board may be provided between the leads and the connector in the lead insertion direction. In this case, through holes must be provided in the circuit board, and the leads must be inserted into the through holes of the circuit board and into the insertion openings of the connector. In this case, when inserting the leads into the insertion openings of the connector, for example, the leads may not be inserted into the insertion openings of the connector but may be mistakenly inserted into a gap between the through holes of the circuit board and the case of the connector. Therefore, there is a demand for an electric compressor that allows an operator to easily confirm that the leads are connected to the connection terminals. [Means for solving the problem]

[0005] An electric compressor that solves the above problem comprises a compression unit that compresses a fluid, a motor that drives the compression unit, and an inverter that drives the motor, wherein the inverter has a circuit board and a case that houses connection terminals that are electrically connected to patterns formed on the circuit board, and a connector that is mounted on the circuit board, wherein a through hole is formed in the circuit board, and the case has a protrusion that opens to an insertion port that is inserted into the through hole and guides a lead that is electrically connected to the connection terminal toward the connection terminal, and the case is provided with an exposure hole that exposes the lead on the opposite side of the insertion port, with the connection terminal sandwiched between them.

[0006] According to this, the case has an exposure hole through which the lead is exposed on the side opposite the insertion opening with the connection terminal sandwiched therebetween, so that when the lead is connected to the connection terminal, the lead is exposed through the exposure hole, allowing the worker to easily confirm that the lead is connected to the connection terminal.

[0007] In the electric compressor, it is preferable that a gap between the protrusion and the through hole is larger than a thickness of the lead. In this way, even if the gap between the protrusion and the through-hole is larger than the thickness of the lead and the lead is easily inserted into the gap between the protrusion and the through-hole, when the lead is connected to the connection terminal, the lead is exposed through the exposure hole, so that an operator can easily confirm that the lead is connected to the connection terminal, even if the lead is easily inserted into the gap between the protrusion and the through-hole.

[0008] In the electric compressor, the case may close a gap between the protrusion and the through hole. With this, even if the lead is not inserted into the insertion opening but is mistakenly inserted into the gap between the protrusion and the through hole, the lead will abut against the case, making it easier for the operator to recognize that the lead has been mistakenly inserted.

[0009] In the electric compressor, the lead may protrude from the exposure hole. This allows the worker to more easily confirm that the lead is connected to the connection terminal, compared to when the lead does not protrude from the exposure hole. [Effects of the Invention]

[0010] According to this invention, the worker can easily confirm that the lead is connected to the connection terminal. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a cross-sectional view of an electric compressor according to an embodiment. [Figure 2] FIG. 2 is an enlarged cross-sectional view of a portion of the electric compressor. [Figure 3] FIG. 3 is a cross-sectional view showing the relationship between the protrusion and the through-hole. [Figure 4] FIG. 4 is a perspective view showing a state in which the lead is inserted into the insertion opening. [Figure 5] FIG. 5 is a perspective view showing a state in which the leads protrude from the exposure holes. DETAILED DESCRIPTION OF THE INVENTION

[0012] An embodiment of an electric compressor will now be described with reference to Figures 1 to 5. The electric compressor of this embodiment is used in, for example, a vehicle air conditioner. <Outline of electric compressor> As shown in FIG. 1, the electric compressor 10 includes a housing 11. The housing 11 includes a discharge housing 12 and a motor housing 13. The discharge housing 12 and the motor housing 13 are cylindrical. The motor housing 13 is connected to the discharge housing 12. The discharge housing 12 and the motor housing 13 are made of a metal material. The discharge housing 12 and the motor housing 13 are made of aluminum, for example. The motor housing 13 includes a plate-shaped end wall 13a and a cylindrical peripheral wall 13b. The peripheral wall 13b extends from the outer periphery of the end wall 13a.

[0013] The electric compressor 10 includes a rotating shaft 14. The rotating shaft 14 is accommodated in a motor housing 13. Therefore, the rotating shaft 14 is accommodated in the housing 11. The rotating shaft 14 is rotatably supported by the motor housing 13.

[0014] The electric compressor 10 includes a compression unit 15 and a motor 16. The compression unit 15 and the motor 16 are housed in a motor housing 13. Therefore, the housing 11 houses the compression unit 15 and the motor 16. The compression unit 15 and the motor 16 are arranged side by side in the axial direction of the rotary shaft 14, which is the direction in which the rotation axis of the rotary shaft 14 extends. The motor 16 is arranged closer to the end wall 13a of the motor housing 13 than the compression unit 15.

[0015] The compression section 15 is driven by the rotation of the rotary shaft 14. The compression section 15 compresses a refrigerant fluid. The compression section 15 is, for example, a scroll type having a fixed scroll (not shown) fixed to the motor housing 13 inside the motor housing 13 and an orbiting scroll (not shown) disposed opposite the fixed scroll.

[0016] The motor 16 has a cylindrical stator 17 and a cylindrical rotor 18. The rotor 18 is disposed inside the stator 17. The rotor 18 is configured to be rotatable integrally with the rotating shaft 14. The rotor 18 has a rotor core 18a and a plurality of permanent magnets 18b. The rotor core 18a is fixed to the rotating shaft 14. The plurality of permanent magnets 18b are provided on the rotor core 18a. The stator 17 surrounds the rotor 18. The stator 17 has a cylindrical stator core 17a and a motor coil 19. The motor coil 19 is wound around the stator core 17a. When power is supplied to the motor coil 19, the rotor 18 rotates, and the rotating shaft 14 rotates integrally with the rotor 18. The compression unit 15 is driven in conjunction with the rotation of the rotating shaft 14. In this manner, the motor 16 drives the compression unit 15.

[0017] The housing 11 has a suction port 13h. The suction port 13h is formed in a portion of the peripheral wall 13b of the motor housing 13, closer to the end wall 13a. The suction port 13h draws refrigerant into the motor housing 13. A first end of the external refrigerant circuit 20 is connected to the suction port 13h. The housing 11 has a discharge port 12h. The discharge port 12h is formed in the discharge housing 12. A second end of the external refrigerant circuit 20 is connected to the discharge port 12h.

[0018] The refrigerant drawn into the motor housing 13 from a first end of the external refrigerant circuit 20 via the suction port 13h is compressed in the compression section 15 as the compression section 15 is driven. The refrigerant compressed in the compression section 15 flows out to a second end of the external refrigerant circuit 20 via the discharge port 12h. The refrigerant that has flowed out to the external refrigerant circuit 20 passes through a heat exchanger and an expansion valve of the external refrigerant circuit 20 and returns to the motor housing 13 via the suction port 13h. The electric compressor 10 and the external refrigerant circuit 20 constitute a vehicle air conditioning system 21.

[0019] The motor housing 13 has a protruding wall 22 and an extending wall 23. The protruding wall 22 protrudes radially outward from a portion of the outer circumferential surface of the peripheral wall 13b of the motor housing 13. The protruding wall 22 is continuous with the end wall 13a of the motor housing 13. The thickness direction of the protruding wall 22 coincides with the thickness direction of the end wall 13a of the motor housing 13. The outer periphery of the protruding wall 22 is continuous with the outer periphery of the end wall 13a of the motor housing 13. The extending wall 23 extends cylindrically from the outer periphery of the protruding wall 22 and the outer periphery of the end wall 13a of the motor housing 13 toward the opposite side from the peripheral wall 13b.

[0020] The electric compressor 10 has a cover 24. The cover 24 is a part of the housing 11. Therefore, the housing 11 has the cover 24. The cover 24 is plate-shaped. The cover 24 is connected to the extension wall 23 in a state where the opening of the extension wall 23 is closed. An inverter chamber 25 is defined by the end wall 13a of the motor housing 13, the protruding wall 22, the extension wall 23, and the cover 24. Therefore, the housing 11 defines the inverter chamber 25.

[0021] A mounting hole 26 is formed in the protruding wall 22. The mounting hole 26 penetrates the protruding wall 22 in the thickness direction of the protruding wall 22. A first end of the mounting hole 26 opens to a surface of the protruding wall 22 located on the opposite side to the extending wall 23. A second end of the mounting hole 26 opens into the inverter chamber 25.

[0022] The electric compressor 10 has a connector connection portion 27. The connector connection portion 27 is cylindrical. The connector connection portion 27 is made of resin. The connector connection portion 27 is attached to a mounting hole 26. A first end of the connector connection portion 27 protrudes from the mounting hole 26 to the outside of the housing 11. A second end of the connector connection portion 27 protrudes from the mounting hole 26 into the inverter chamber 25. The connector connection portion 27 is a female type configured so that a male external connector 28 can be connected to the first end of the connector connection portion 27. The external connector 28 is electrically connected to a vehicle-side low-voltage battery (not shown). The external connector 28 is also electrically connected to a vehicle ECU (not shown), which is a higher-level ECU.

[0023] The electric compressor 10 is provided with leads 29. The leads 29 are held by a connector connection portion 27. The connector connection portion 27 holds three leads 29. Each lead 29 is in the shape of an elongated plate. The leads 29 are held by the connector connection portion 27 while being lined up in one direction. Each lead 29 penetrates the connector connection portion 27. A first end of each lead 29 is located inside the first end of the connector connection portion 27. A second end of each lead 29 protrudes from the second end of the connector connection portion 27 and extends into the inverter chamber 25. Then, when an external connector 28 is connected to the first end of the connector connection portion 27, the external connector 28 and each lead 29 are electrically connected to each other.

[0024] The electric compressor 10 includes an inverter 30. The inverter 30 is housed in an inverter chamber 25. Therefore, the inverter chamber 25 houses the inverter 30. The inverter 30 drives the motor 16. The compression unit 15, the motor 16, and the inverter 30 are arranged in this order in the axial direction of the rotating shaft 14.

[0025] The inverter 30 includes, for example, switching elements that perform switching operations to drive the motor 16, filter elements that reduce noise, etc. The inverter 30 also includes, for example, a control circuit that controls the switching operations of the switching elements.

[0026] <Circuit board> The inverter 30 has a circuit board 31. The circuit board 31 is disposed in the inverter chamber 25 with the thickness direction of the circuit board 31 coinciding with the thickness direction of the end wall 13a of the motor housing 13 and the thickness direction of the protruding wall 22. A portion of the circuit board 31 overlaps with the connector connection portion 27 in the thickness direction of the circuit board 31. The circuit board 31 has a first surface 31a and a second surface 31b. The first surface 31a is the surface of the circuit board 31 that faces the connector connection portion 27. The second surface 31b is the surface that is opposite to the first surface 31a. The second surface 31b faces the cover 24 in the thickness direction of the circuit board 31.

[0027] <pattern> 2, the circuit board 31 has a pattern 32. The pattern 32 is formed on the circuit board 31.

[0028] <Through hole> As shown in Figures 2, 3, and 4, a through hole 33 is formed in the circuit board 31. As shown in Figure 2, the through hole 33 is formed in a portion of the circuit board 31 that overlaps with the connector connection portion 27 in the thickness direction of the circuit board 31. A first end of the through hole 33 opens to a first surface 31a of the circuit board 31. A second end of the through hole 33 opens to a second surface 31b of the circuit board 31. As shown in Figures 3 and 4, the through hole 33 has an elongated hole shape. The longitudinal direction of the through hole 33 coincides with the direction in which the three leads 29 are arranged side by side.

[0029] <Connector> As shown in Figures 2, 3, and 4, the inverter 30 has a connector 40. The connector 40 is made of resin. The connector 40 is mounted on the circuit board 31. The connector 40 has a case 41. The case 41 has a case main body 42 and a protrusion 43. The case main body 42 is in the shape of a rectangular box.

[0030] As shown in Fig. 2, connection terminals 44 are housed within the case body 42. Therefore, the case 41 houses the connection terminals 44. Note that three connection terminals 44 are housed within the case body 42, one for each lead 29, but for convenience of illustration, only one of the three connection terminals 44 is shown in Fig. 2. Each connection terminal 44 is electrically connected to the pattern 32.

[0031] The case body 42 has a first wall 42a and a second wall 42b. The first wall 42a and the second wall 42b face each other. The first wall 42a faces the second surface 31b of the circuit board 31. The second wall 42b is located on the opposite side of the first wall 42a with the connection terminal 44 sandwiched therebetween. The case 41 is disposed relative to the circuit board 31 with the case body 42 disposed on the opposite side of the connector connection portion 27 with the circuit board 31 sandwiched therebetween.

[0032] The protrusion 43 protrudes from the first wall 42a. As shown in FIGS. 3 and 4 , the protrusion 43 has a rectangular cylindrical shape. The protrusion 43 is inserted into the through hole 33. Specifically, the protrusion 43 is inserted into the through hole 33 from the side opposite the connector connection portion 27, with the circuit board 31 sandwiched therebetween. When the protrusion 43 and the through hole 33 are viewed in a plan view, the longitudinal direction of the protrusion 43 coincides with the longitudinal direction of the through hole 33. A portion of the first wall 42a closes a gap 45 between the protrusion 43 and the through hole 33.

[0033] The protruding portion 43 has three insertion openings 46. Each insertion opening 46 has a rectangular hole shape. As shown in FIG. 2, a first end of each insertion opening 46 opens to the end face of the protruding portion 43 opposite the first wall 42a. A second end of each insertion opening 46 communicates with the inside of the case main body 42. As shown in FIGS. 3 and 4, the three insertion openings 46 are arranged side by side in the longitudinal direction of the protruding portion 43. Each insertion opening 46 is formed so that the inner surface defining the insertion opening 46 is tapered, with the opening area gradually decreasing as it moves away from the end face of the protruding portion 43 opposite the first wall 42a. Each insertion opening 46 guides each lead 29 electrically connected to each connection terminal 44 toward the connection terminal 44. In this way, the protruding portion 43 has the insertion openings 46 that guide the leads 29 electrically connected to the connection terminals 44 toward the connection terminals 44.

[0034] <Relationship between lead and gap> As shown in FIG. 3 , the gap 45 between the protrusion 43 and the through hole 33 is larger than the thickness T1 of the portion of each lead 29 that is inserted into the insertion opening 46. The cross-sectional shape of the portion of each lead 29 that is inserted into the insertion opening 46 is square. Here, since the connector 40 is mounted on the circuit board 31 with some play, the size of the gap 45 between the protrusion 43 and the through hole 33 changes depending on the movement of the protrusion 43 relative to the through hole 33. Even if the protrusion 43 moves relative to the through hole 33, the gap 45 between the protrusion 43 and the through hole 33 always has a portion around the entire periphery of the protrusion 43 that is larger than the thickness T1 of the lead 29. In this way, the gap 45 between the protrusion 43 and the through hole 33 is larger than the thickness T1 of each lead 29.

[0035] <Exposure hole> As shown in FIG. 5, three exposure holes 47 are provided in the second wall 42b of the case body 42. Each exposure hole 47 penetrates the second wall 42b of the case body 42 in the thickness direction of the second wall 42b. The three exposure holes 47 are arranged side by side in the longitudinal direction of the case body 42. Each exposure hole 47 is a square hole. As shown in FIG. 2, a first end of each exposure hole 47 opens into the case body 42. A second end of each exposure hole 47 opens to the outside of the case body 42. Each exposure hole 47 is arranged at a position overlapping with a corresponding insertion opening 46 in the thickness direction of the circuit board 31. In this way, each exposure hole 47 is arranged on the opposite side of the insertion opening 46 with the connection terminal 44 sandwiched therebetween.

[0036] 2 and 5, the second ends of the leads 29 connected to the connection terminals 44 pass through the case body 42 and protrude from the case body 42 through the exposure holes 47. Thus, the leads 29 protrude from the exposure holes 47. In this manner, the case 41 is provided with the exposure holes 47 through which the leads 29 are exposed on the side opposite the insertion opening 46 with the connection terminals 44 sandwiched therebetween.

[0037] [Operation of the embodiment] Next, the operation of this embodiment will be described. When the external connector 28 is connected to the connector connection portion 27, low-voltage power from the vehicle-side low-voltage battery is supplied to the pattern 32 of the circuit board 31 via the external connector 28, the leads 29, and the connection terminals 44. In this manner, the inverter 30 is driven. Furthermore, when the external connector 28 is connected to the connector connection portion 27, a control signal from the vehicle ECU is input to the pattern 32 of the circuit board 31 via the external connector 28, the leads 29, and the connection terminals 44.

[0038] The inverter 30 controls the switching operation of the switching elements based on control signals from the vehicle ECU. As a result, the inverter 30 is driven based on the control signals from the vehicle ECU. The inverter 30 converts DC power from a vehicle-side high-voltage battery (not shown) into AC power through the switching operation of the switching elements. The AC power is then supplied to the motor 16, thereby driving the motor 16. In this way, the inverter 30 converts DC power into AC power and supplies it to the motor 16, thereby driving the motor 16.

[0039] In such an electric compressor 10, when connecting each lead 29 to each connection terminal 44 in the case 41 through each insertion opening 46, there is a case where each lead 29 is not inserted into each insertion opening 46 but is erroneously inserted into a gap between the through hole 33 and the case 41 of the connector 40. Specifically, when connecting each lead 29 to each connection terminal 44 in the case 41 through each insertion opening 46, there is a case where each lead 29 is not inserted into each insertion opening 46 but is erroneously inserted into a gap 45 between the protrusion 43 and the through hole 33. In this case, an operator can know that each lead 29 is not connected to each connection terminal 44 by confirming that each lead 29 is not exposed from each exposure hole 47. In particular, because the case 41 closes the gap 45 between the protrusion 43 and the through hole 33, when each lead 29 is not inserted into each insertion opening 46 but is erroneously inserted into the gap 45 between the protrusion 43 and the through hole 33, each lead 29 abuts against the case 41. Therefore, it becomes easier for the operator to recognize that each lead 29 has been inserted incorrectly.

[0040] On the other hand, when each lead 29 is connected to each connection terminal 44, each lead 29 is exposed through each exposure hole 47. Therefore, it is possible for an operator to easily confirm that each lead 29 is connected to each connection terminal 44. In particular, because each lead 29 protrudes from each exposure hole 47, it is even easier for an operator to confirm that each lead 29 is connected to each connection terminal 44 than when each lead 29 does not protrude from each exposure hole 47.

[0041] [Effects of the embodiment] The above embodiment can provide the following effects. (1) Case 41 is provided with exposure holes 47 through which leads 29 are exposed on the side opposite insertion opening 46 with connection terminal 44 sandwiched therebetween, and therefore, when leads 29 are connected to connection terminal 44, leads 29 are exposed through exposure holes 47. Therefore, an operator can easily confirm that leads 29 are connected to connection terminal 44.

[0042] (2) The gap 45 between the protrusion 43 and the through hole 33 is larger than the thickness T1 of the lead 29. In this way, even if the configuration makes it easy for the lead 29 to be erroneously inserted into the gap 45 between the protrusion 43 and the through hole 33, when the lead 29 is connected to the connection terminal 44, the lead 29 is exposed through the exposure hole 47. Therefore, even if the configuration makes it easy for the lead 29 to be erroneously inserted into the gap 45 between the protrusion 43 and the through hole 33, the worker can easily confirm that the lead 29 is connected to the connection terminal 44.

[0043] (3) The case 41 closes the gap 45 between the protrusion 43 and the through-hole 33. This allows the lead 29 to abut against the case 41 even if the lead 29 is not inserted into the insertion opening 46 but is mistakenly inserted into the gap 45 between the protrusion 43 and the through-hole 33. This makes it easier for the operator to know that the lead 29 has been mistakenly inserted.

[0044] (4) The leads 29 protrude from the exposure holes 47. This allows the worker to more easily confirm that the leads 29 are connected to the connection terminals 44, compared to when the leads 29 do not protrude from the exposure holes 47. In particular, because the leads 29 protrude from the exposure holes 47, the worker can confirm that the leads 29 are connected to the connection terminals 44 from a direction intersecting the thickness direction of the circuit board 31. Therefore, the worker can more easily confirm that the leads 29 are connected to the connection terminals 44.

[0045] (5) Each insertion opening 46 is formed so that the inner surface defining the insertion opening 46 has a tapered surface whose opening area gradually decreases as it moves away from the end face of the protrusion 43 opposite the first wall 42a. As a result, each lead 29 passes through each insertion opening 46 while being guided by the inner surface defining the insertion opening 46. Therefore, each lead 29 is easily guided by each insertion opening 46 toward each connection terminal 44. This makes it easier to connect each lead 29 to each connection terminal 44.

[0046] [Example of change] The above embodiment can be modified as follows: The above embodiment and the following modifications can be combined with each other within the scope of technical compatibility.

[0047] In the embodiment, the gap 45 between the protrusion 43 and the through hole 33 may be equal to or smaller than the thickness T1 of the lead 29. For example, consider a case where the gap 45 between the protrusion 43 and the through hole 33 is smaller than the thickness T1 of the lead 29. Even in this case, when connecting the lead 29 to the connection terminal 44 in the case 41 through the insertion opening 46, the lead 29 may be inserted toward the gap 45 between the protrusion 43 and the through hole 33. In this case, the worker can confirm that the lead 29 is not connected to the connection terminal 44 by confirming that the lead 29 is not exposed through the exposure hole 47. When the lead 29 is connected to the connection terminal 44, the lead 29 is exposed through the exposure hole 47. Therefore, the worker can easily confirm that the lead 29 is connected to the connection terminal 44.

[0048] In the above embodiment, the case 41 does not have to close the gap 45 between the protrusion 43 and the through-hole 33 . In the embodiment, the leads 29 do not have to protrude from the exposure holes 47. Even in this case, the worker determines whether the leads 29 are exposed from the exposure holes 47 when looking into the exposure holes 47 from the thickness direction of the circuit board 31. If the leads 29 are exposed from the exposure holes 47, the worker determines that the leads 29 are connected to the connection terminals 44. In this way, the worker can easily confirm that the leads 29 are connected to the connection terminals 44.

[0049] In the embodiment, the inner surface defining the insertion opening 46 does not have to be tapered so that the opening area gradually decreases with increasing distance from the end face of the protruding portion 43 opposite the first wall 42a.

[0050] In the above embodiment, the shape of the through hole 33 is not particularly limited. The shape of the protrusion 43 may be changed appropriately to match the shape of the through hole 33. In the embodiment, the cross-sectional shape of the portion of the lead 29 that is inserted into the insertion opening 46 is not limited to a square and may be, for example, a circular shape or a rectangular shape. The shape of the insertion opening 46 may be appropriately changed to match the cross-sectional shape of the portion of the lead 29 that is inserted into the insertion opening 46.

[0051] In the embodiment, there is no particular limitation on the number of leads 29. The numbers of insertion openings 46 and exposure holes 47 may be changed as appropriate depending on the number of leads 29. In the above-described embodiment, the external connector 28 connected to the connector connection portion 27 may be a connector for supplying high-voltage direct current from a vehicle-side high-voltage battery to the inverter 30 .

[0052] In an embodiment, for example, the inverter chamber 25 may be defined by a cylindrical case body that is a separate member from the motor housing 13 and is attached to the end wall 13a of the motor housing 13, and a lid member that closes the opening of the case body.

[0053] In the embodiment, the electric compressor 10 may be configured such that, for example, the inverter 30 is disposed radially outward of the rotary shaft 14 relative to the housing 11. In other words, the compression unit 15, the motor 16, and the inverter 30 do not have to be disposed side by side in this order in the axial direction of the rotary shaft 14.

[0054] In the above-described embodiment, the compression unit 15 is not limited to a scroll type, but may be, for example, a piston type, a vane type, a rotary type, or the like. In the above embodiment, the electric compressor 10 constitutes the vehicle air-conditioning device 21. However, the present invention is not limited to this. For example, the electric compressor 10 may be mounted on a fuel cell vehicle and may compress air, which serves as a fluid to be supplied to the fuel cell, using the compression unit 15.

[0055] [Note] The technical ideas that can be understood from the above-described embodiment and modifications will be described below. <Appendix 1> a compression section that compresses the fluid; a motor that drives the compression unit; an inverter that drives the motor, The inverter is A circuit board; an electric compressor having a case that houses connection terminals that are electrically connected to patterns formed on the circuit board, and a connector that is mounted on the circuit board, The circuit board has a through hole formed therein, the case has a protrusion that is inserted into the through hole and has an insertion opening that guides a lead electrically connected to the connection terminal toward the connection terminal, The electric compressor is characterized in that the case is provided with an exposure hole through which the leads are exposed on the opposite side of the insertion opening with the connection terminals sandwiched therebetween.

[0056] <Appendix 2> The electric compressor according to <Appendix 1>, wherein the gap between the protrusion and the through hole is larger than the thickness of the lead.

[0057] <Appendix 3> The electric compressor according to <Supplementary Note 1> or <Supplementary Note 2>, wherein the case closes a gap between the protrusion and the through hole.

[0058] <Appendix 4> The electric compressor according to any one of <Appendix 1> to <Appendix 3>, wherein the lead protrudes from the exposure hole. [Explanation of symbols]

[0059] 10...electric compressor, 15...compression section, 16...motor, 29...lead, 30...inverter, 31...circuit board, 32...pattern, 33...through hole, 40...connector, 41...case, 43...protrusion, 44...connection terminal, 45...gap, 46...insertion port, 47...exposure hole

Claims

1. a compression section that compresses the fluid; a motor that drives the compression unit; an inverter that drives the motor, The inverter is A circuit board; an electric compressor having a case that houses connection terminals that are electrically connected to patterns formed on the circuit board, and a connector that is mounted on the circuit board, The circuit board has a through hole formed therein, the case has a protrusion that is inserted into the through hole and has an insertion opening that guides a lead electrically connected to the connection terminal toward the connection terminal, The electric compressor is characterized in that the case is provided with an exposure hole through which the leads are exposed on the opposite side of the insertion opening with the connection terminals sandwiched therebetween.

2. 2. The electric compressor according to claim 1, wherein a gap between the protrusion and the through hole is larger than a thickness of the lead.

3. 3. The electric compressor according to claim 1, wherein the case closes a gap between the protrusion and the through hole.

4. 3. The electric compressor according to claim 1, wherein the lead projects from the exposure hole.

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