Inverter device and motor device including the same

Abstract

The utility model provides an inverter device and a motor device with the same. An inverter device (1) is provided with an inverter (3) and an inverter case (2) in which the inverter (3) is disposed. The inverter case (2) has ribs (7) on at least one of the inner surface and the outer surface thereof. In a plan view of the inverter case (2), the ribs (7) are configured in a shape other than a hexagon by a portion of at least two of a plurality of imaginary hexagons that are arranged and connected to each other without gaps.

Description

Technical Field

[0001] The utility model relates to an inverter device and a motor device with the inverter device. Background Art

[0002] It has long been known that there is an inverter device in which an inverter for converting DC power into AC power is arranged in an inverter housing. The inverter device is used for controlling a motor, etc. When the inverter device is used for controlling a motor of an electric vehicle, it is sometimes directly mounted on a motor housing that accommodates the motor for the purpose of miniaturization and lightness due to the omission of wiring, etc. The wall portion of the inverter housing directly mounted on the motor housing may resonate due to the motor vibration generated when the motor is driven. Therefore, in order to suppress the resonance, it is desired that the wall portion of the inverter housing has increased rigidity.

[0003] For example, Patent Document 1 discloses a control housing, in which the control housing accommodating an inverter is provided in a frame having a stator and a rotor inside, and has a plurality of honeycomb-shaped ribs as a vibration suppression structure for suppressing the resonance of the control housing. The control housing has a wall portion with increased rigidity by the plurality of honeycomb-shaped ribs. Thus, the rotary electric machine can prevent the resonance of the control housing caused by the transmission of vibration from the rotary electric machine side.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 2011-223675 Utility Model Content

[0007] Issues to be solved by utility models

[0008] The honeycomb-shaped ribs arranged on the wall of the control case disclosed in Patent Document 1 increase the rigidity of the area of ​​the wall where the honeycomb-shaped ribs are arranged and disperse and receive external force applied to the wall, thereby suppressing resonance of the wall.

[0009] However, the honeycomb-shaped multiple ribs require that the multiple hexagonal ribs be located without gaps within a constant range of the above-mentioned wall portion. Therefore, the increase rate of weight per unit area is greater than the case of configuring ordinary ribs, and sometimes the rigidity of the wall portion configured with the above-mentioned multiple ribs is higher than required.

[0010] An object of the present invention is to realize a structure that can be reduced in weight while ensuring rigidity for suppressing resonance of a wall portion of the inverter case in an inverter device in which an inverter is arranged in an inverter case.

[0011] Solutions to Solve Problems

[0012] Solution 1 of the present utility model is an inverter device, which has:

[0013] Inverter; and

[0014] An inverter housing equipped with the inverter,

[0015] It is characterized in that

[0016] The inverter housing has ribs on at least one of the inner surface and the outer surface.

[0017] In a plan view of the wall surface having the rib in the inverter case, the rib is formed into a shape other than a hexagon by a portion of each of at least two of a plurality of virtual hexagons arranged and connected to each other without a gap.

[0018] Solution 2 is an inverter device according to Solution 1, characterized in that:

[0019] The rib has a shape having an outer shape that is a polygon formed by at least two imaginary hexagons arranged without a gap between them.

[0020] Scheme 3 is an inverter device according to Scheme 1, characterized in that:

[0021] The rib has an outer shape that constitutes a polygon consisting of three virtual hexagons adjacent to each other without a gap.

[0022] Scheme 4 is an inverter device according to Scheme 1, characterized in that:

[0023] The rib has a shape in which three sides extending from a common vertex of three virtual hexagons adjacent to each other without a gap are connected to each other.

[0024] Scheme 5: The inverter device according to Scheme 1, characterized in that:

[0025] having a plurality of the above ribs,

[0026] The plurality of ribs include a plurality of ribs of the same shape,

[0027] In a plan view of the wall surface of the inverter case having the plurality of ribs of the same shape, the plurality of ribs of the same shape have the same posture.

[0028] Scheme 6 is an inverter device according to Scheme 1, characterized in that:

[0029] having a plurality of the above ribs,

[0030] The plurality of ribs include a plurality of ribs of the same shape,

[0031] In a plan view of the wall surface of the inverter case having the plurality of ribs of the same shape, the plurality of ribs of the same shape include ribs having one posture and ribs having another posture different from the one posture.

[0032] Scheme 7 is a motor device, characterized in that:

[0033] have:

[0034] The inverter device described in schemes 1 to 6;

[0035] A motor controlled by the inverter device; and

[0036] a motor housing for housing the motor,

[0037] The inverter case of the inverter device is connected to the motor housing.

[0038] Utility Model Effect

[0039] According to the inverter device and the motor device including the inverter device according to the embodiment of the present invention, it is possible to achieve weight reduction while ensuring rigidity for suppressing resonance of the wall portion of the inverter case. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a perspective view showing a schematic structure of the inverter device according to the first embodiment of the present invention.

[0041] Figure 2 Yes means Figure 1 Cross-sectional view of the II-II line section.

[0042] Figure 3 The inverter device according to the second embodiment of the present invention is shown in FIG. Figure 1 Cross-sectional view of the II-II line section.

[0043] Figure 4 The inverter device according to the third embodiment of the present invention is shown in FIG. Figure 1 Cross-sectional view of the II-II line section.

[0044] Figure 5 The inverter device according to the fourth embodiment of the present invention is shown in FIG. Figure 1 Cross-sectional view of the II-II line section.

[0045] Figure 6 The inverter device according to the fifth embodiment of the present invention is shown in FIG. Figure 1 Cross-sectional view of the II-II line section.

[0046] Figure 7 The inverter device according to the sixth embodiment of the present invention is shown in FIG. Figure 1 Cross-sectional view of the II-II line section.

[0047] Figure 8 The inverter device according to the seventh embodiment of the present invention is shown in FIG. Figure 1 Cross-sectional view of the II-II line section.

[0048] Fig. 9 The inverter device according to the eighth embodiment of the present invention is shown in FIG. Figure 1 Cross-sectional view of the II-II line section.

[0049] Fig.10 The inverter device according to the ninth embodiment of the present invention is shown in FIG. Figure 1 Cross-sectional view of the II-II line section.

[0050] Fig.11 The inverter device according to the tenth embodiment of the present invention is shown in FIG. Figure 1 Cross-sectional view of the II-II line section.

[0051] Fig.12 It is a perspective view showing a schematic structure of a motor device according to each embodiment of the present invention.

[0052] In the figure:

[0053] 1, 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I—inverter device, 2, 2A, 2B, 2C, 2D, 2E, 2F, 2G, 2H, 2I—inverter housing, 3—inverter, 4—cover, 5—housing body, 51—bottom wall, 51a—wall surface, 52—side wall, 53—contact portion, 6, 6A, 6B, 6C, 6D, 6E, 6F, 6G, 6H, 6I—reinforcement parts, 7, 7A, 7B, 7C, 7D, 7E, 7F—ribs, 8, 8A, 8B, 8C, 8D—rib groups, 100—motor device, 110—motor, 111—stator, 112—rotor, 120—motor housing, 121—peripheral wall part, 122—cover part, P, P1, P2—vertices, P3—center axis. DETAILED DESCRIPTION

[0054] Hereinafter, the exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, the same or equivalent parts in the drawings are marked with the same symbols, and their descriptions are not repeated. In addition, the dimensions of the components in each figure do not faithfully represent the dimensions of the actual components and the dimensional ratios of the components.

[0055] In the following description, the thickness direction refers to a direction perpendicular to the surface having the largest area in the bottom wall portion and the side wall portion of the inverter case.

[0056] In the following description, the term “same” not only means strictly the same but also includes a range that can be regarded as substantially the same.

[0057] In addition, in the following description, expressions such as "fixed", "connected", "joined", and "mounted" (hereinafter referred to as fixed, etc.) include not only cases where components are directly fixed to each other, but also cases where components are fixed via other components. That is, in the following description, expressions such as fixed include the meaning of direct and indirect fixing of components to each other.

[0058] (Implementation Method 1)

[0059] (Structure of Inverter Device 1)

[0060] use Figure 1 , the structure of the inverter device 1 according to the first embodiment is described. Figure 1 1 is a cross-sectional view showing a schematic structure of an inverter device 1 according to Embodiment 1. The inverter device 1 is a device for controlling the current supplied to a drive device such as a motor. Figure 1 As shown, the inverter device 1 includes an inverter housing 2 and an inverter 3 .

[0061] like Figure 1 As shown, the inverter housing 2 accommodates electronic components including the inverter 3. That is, the inverter 3 is arranged in the inverter housing 2. The inverter housing 2 protects the inverter 3 and the like stored therein from dust, impact, etc. The inverter housing 2 is configured to be able to fix the inverter 3 therein. The inverter housing 2 is, for example, composed of an aluminum die-casting component. In addition, the inverter housing 2 may also be a component formed by a manufacturing method other than die-casting.

[0062] The inverter 3 converts the DC current supplied from the external power supply device into AC current. The inverter 3 is electrically connected to the external power supply device and the drive device such as the motor by means of electric wires through the wire hole (not shown) of the inverter case 2. The inverter 3 converts the DC current supplied from the above-mentioned power supply device into AC current and supplies the AC current to the above-mentioned drive device.

[0063] The inverter device 1 thus configured protects electronic equipment including the inverter 3 from dust, vibration, shock, etc. via the inverter case 2. Therefore, the inverter device 1 can be installed in a location where the operating environment of the electronic equipment is severe, such as near a driver such as an electric motor.

[0064] (Structure of Inverter Case 2)

[0065] Next, use Figure 1 and Figure 2 The inverter case 2 will be described in detail. Figure 2 Yes means Figure 1sectional view of the inverter device 1 taken along line II-II. Figure 2 The bottom wall portion 51 is viewed from the thickness direction. The inverter housing 2 has a cover 4 (see FIG. Figure 1 ), the shell body 5 and the reinforcement part 6.

[0066] like Figure 1 As shown, the housing body 5 is a box-shaped frame having an opening. The housing body 5 can be provided with the inverter 3 inside. The housing body 5 has a bottom wall 51 and a side wall 52 surrounding the peripheral edge of the bottom wall 51. The housing body 5 is configured to be large enough to accommodate electronic equipment including the inverter 3.

[0067] The bottom wall 51 constitutes the bottom wall of the housing body 5. The bottom wall 51 is a plate-shaped member that is rectangular in a plan view. When viewed from the opening of the housing body 5, the bottom wall 51 overlaps with the opening.

[0068] The side wall portion 52 constitutes the side wall of the housing body portion 5. The side wall portion 52 is a square tube-shaped member extending in the thickness direction of the bottom wall portion 51. The side wall portion 52 surrounds the bottom wall portion 51. The base end portion of the side wall portion 52 is connected to the peripheral edge portion of the bottom wall portion 51. The front end portion of the side wall portion 52 constitutes the opening portion of the housing body portion 5.

[0069] Electronic devices including the inverter 3 are housed inside the housing body 5. In the present embodiment, the inverter 3 is disposed on the bottom wall 51. The housing body 5 covers the opening portion with the cover 4. Therefore, the housing body 5 can protect the inverter 3 from external dust, vibration, impact, and the like.

[0070] The reinforcement portion 6 improves the rigidity of the housing body 5. The reinforcement portion 6 is arranged on the bottom wall portion 51, which is a wall portion of the housing body 5 where the inverter 3 is arranged. The reinforcement portion 6 is located on the wall surface 51a on the inner side of the bottom wall portion 51 of the housing body 5 in the bottom wall portion 51. That is, the reinforcement portion 6 is located on the inner surface of the inverter housing 2. The reinforcement portion 6 has a plurality of ribs 7 protruding from the wall surface 51a in the thickness direction of the bottom wall portion 51. The ribs 7 and the housing body 5 are composed of a single component.

[0071] like Figure 2 As shown in FIG. 1 , the rib 7 is formed by a part of an imaginary hexagon included in an imaginary line representing a honeycomb shape in which a plurality of hexagons are arranged and connected without gaps. For example, when viewed from above the wall surface 51a, the rib 7 forms a polygonal shape formed by parts of two of the above-mentioned imaginary hexagons. The polygonal shape formed by parts of two imaginary hexagons arranged and connected without gaps means that, when viewed from above the wall surface 51a, the common sides ( Figure 2 The shape of the imaginary line portion).

[0072] Therefore, the rib 7 is composed of a part of a honeycomb in which a plurality of imaginary hexagons are arranged without gaps. That is, the rib 7 is composed of a part of a plurality of imaginary hexagons arranged and connected to each other without gaps to form a shape other than a hexagon. In addition, the rib 7 is formed into a polygonal closed cross section composed of parts of two imaginary hexagons arranged and connected to each other without gaps when viewed from the top of the wall surface 51a. In the present embodiment, all of the plurality of ribs 7 have the same shape.

[0073] A plurality of ribs 7 are arranged on the entire wall surface 51a. The plurality of ribs 7 are arranged without gaps along the wall surface 51a. When viewed from above the wall surface 51a, the plurality of ribs 7 are located at a position that overlaps with an imaginary line of a honeycomb in which a plurality of imaginary hexagons are arranged without gaps. Therefore, a portion of the rib 7 constitutes a portion of the side of the other adjacent plurality of ribs 7. In this way, when viewed from above the wall surface 51a, the plurality of ribs 7 constituting a closed cross section of a polygon that is not a hexagon are positioned in a state of sharing a portion of the side.

[0074] In addition, when viewed from above the wall surface 51a, the plurality of ribs 7 are each formed by a polygonal outer shape formed by parts of two imaginary hexagons connected to each other without a gap in the same direction relative to the wall surface 51a. That is, in the reinforcing portion 6, the posture of the ribs 7 defined by the position of the other imaginary hexagon connected to one of the imaginary hexagons is consistent with the wall surface 51a.

[0075] The plurality of ribs 7 are arranged in a row without gaps and at equal intervals in the arrangement direction of the two connected imaginary hexagons along the wall surface 51a to form a rib group 8. The plurality of rib groups 8 are arranged at equal intervals without gaps. In the case where the reinforcing portion 6 includes three or more rows of rib groups 8, two rib groups 8 adjacent to each other without gaps on both sides of one rib group 8 are arranged at positions offset by the same amount in the same direction in the direction in which the row of the rib group 8 extends relative to the central rib group 8.

[0076] Since the plurality of ribs 7 are arranged on the entire bottom wall portion 51 on which the inverter 3 is mounted, the rigidity of the entire bottom wall portion 51 can be appropriately increased. Therefore, the plurality of ribs 7 can suppress the resonance of the entire bottom wall portion 51 vibrating like a membrane, and reduce the vibration transmitted to the inverter 3. Therefore, the inverter 3 can be protected from vibration from external devices.

[0077] In the inverter device 1 constructed as described above, the inverter housing 2 has a reinforcement portion 6. The reinforcement portion 6 has at least one rib 7, which is composed of a portion of each of two imaginary hexagons among a plurality of imaginary hexagons arranged and connected to each other without a gap when viewed from above the surface of the inverter housing 2 having the reinforcement portion 6. That is, the rib 7 is composed of a small amount of material compared to the case where it is composed of a honeycomb shape. At this time, the rib 7 is composed of a portion of a honeycomb shape having sufficient rigidity to suppress the resonance of the wall surface 51a of the inverter housing 2. Therefore, the rib 7 has a rigidity that can suppress the membrane vibration of the wall surface 51a. Therefore, the rib 7 increases the rigidity of the wall portion of the inverter housing 2, suppresses the resonance of the above-mentioned wall portion, and can suppress the amount of material required per unit area compared to a honeycomb rib composed of a hexagon having the same size as the imaginary hexagon constituting a portion of the rib 7.

[0078] In addition, in the above-mentioned structure, in the reinforcement portion 6 of the inverter case 2, the plurality of ribs 7 are arranged without gaps on the wall surface 51a, thereby improving the rigidity of the range where the plurality of ribs 7 are located. Therefore, the wall surface of the inverter case 2 can improve the rigidity of the range where the plurality of ribs 7 are located, while suppressing the amount of material required per unit area compared to the case where the wall surface includes a plurality of ribs in a honeycomb shape composed of hexagons having the same size as the virtual hexagon of which the plurality of ribs 7 constitute a part.

[0079] In addition, in the above structure, the rib 7 has a shape that constitutes the outer shape of a plurality of imaginary hexagons arranged without gaps. That is, the rib 7 does not have a portion that constitutes a common side of adjacent imaginary hexagons. Therefore, compared with a honeycomb rib having a portion that constitutes a common side of adjacent imaginary hexagons, the rib 7 can reduce the amount of material required per unit area. In addition, the rib 7 constitutes a closed cross section, so it is possible to disperse and receive the external force applied to the range surrounded by the rib 7. Therefore, the rigidity of the range where the rib 7 is arranged is improved.

[0080] Therefore, it is possible to achieve weight reduction while ensuring rigidity for suppressing resonance of the inverter case 2 .

[0081] (Implementation Method 2)

[0082] (Structure of Inverter Device 1A)

[0083] Next, use Figure 3 , an inverter device 1A according to a second embodiment of the present invention will be described. Figure 3 The inverter device 1A according to the second embodiment of the present invention is Figure 1The inverter device 1A is a cross-sectional view observed at the same position and direction as the line II-II. The inverter device 1A has an inverter housing 2A. In the inverter device 1A, the structure of the reinforcement portion 6A of the inverter housing 2A is different from the structure of the reinforcement portion 6 in the inverter device 1 of the first embodiment. In the following, only the structure different from the structure already described will be described, and the same structure will be marked with the same reference numerals and the description will be omitted.

[0084] like Figure 3 As shown, the inverter case 2A includes a case body portion 5 and a reinforcement portion 6A.

[0085] (Structure of reinforcement portion 6A)

[0086] The reinforcement part 6A is arranged on the bottom wall part 51 on the surface where the inverter 3 is mounted in the housing body 5. The reinforcement part 6A is arranged on the inner wall surface 51a of the housing body 5 in the bottom wall part 51. The reinforcement part 6A is composed of ribs 7A. The reinforcement part 6A has a plurality of ribs 7A. In addition, the reinforcement part 6A is composed of ribs 7A of the same shape. The ribs 7A and the housing body 5 are composed of a single component.

[0087] When viewed from above the wall 51a, the rib 7A forms a polygonal shape, which is formed by three imaginary hexagons adjacent to each other without gaps, each sharing a vertex P. That is, when viewed from above the wall 51a, the rib 7A forms a polygonal shape, which is obtained by rotating the imaginary hexagonal shape every 120 degrees with the vertex P as the center. The polygonal shape formed by three imaginary hexagons adjacent to each other without gaps means that when viewed from above the wall 51a, the common sides ( Figure 3 The shape of the imaginary line portion).

[0088] Therefore, the rib 7A is composed of a part of a honeycomb shape in which a plurality of virtual hexagons are arranged without gaps. That is, the rib 7A is composed of a part of three virtual hexagons arranged and connected to each other without gaps, which is a shape other than a hexagon.

[0089] In the rib 7A composed of parts of each of the three imaginary hexagons, the parts of each of the three imaginary hexagons are arranged at equal intervals in the rotation direction with the vertex P as the rotation center. Therefore, the rib 7A is configured in a substantially Y-shape having outer portions extending in three directions at equal intervals in the rotation direction with the vertex P as the center.

[0090] A plurality of ribs 7A are provided on the entire wall surface 51a. The plurality of ribs 7A are arranged without gaps from each other along the wall surface 51a. When viewed from above the wall surface 51a, the plurality of ribs 7A are located at a position that overlaps with an imaginary line of a honeycomb in which a plurality of imaginary hexagons are arranged without gaps. Therefore, a portion of each rib 7A constitutes a portion of other adjacent ribs 7A. That is, mutually adjacent ribs 7A among the plurality of ribs 7A share a portion of their sides. In this way, in the reinforcement portion 6A, when viewed from above the wall surface 51a, the plurality of ribs 7A constituting a closed cross section of a polygon that is not a hexagon are positioned in a state of sharing a portion of their sides.

[0091] In a top view of the wall surface 51a, the plurality of ribs 7A have a polygonal outer shape consisting of parts of three imaginary hexagons positioned without gaps in the same three directions relative to the wall surface 51a. That is, in the reinforcing portion 6A, the plurality of ribs 7A have the same posture as that of the ribs 7A defined by the positions of the three imaginary hexagons with the vertex P as a reference relative to the wall surface 51a.

[0092] The plurality of ribs 7A are located on the wall surface 51 a at equal intervals and without gaps in the same posture in the direction in which each virtual hexagon is located with reference to the vertex P among the ribs 7A formed of parts of three virtual hexagons.

[0093] The bottom wall 51 of the housing body 5 to which the inverter 3 is fixed has a contact portion 53 that contacts two ejector pins for removing the inverter housing 2A made of aluminum die-casting from the die. The contact portion 53 extends from the wall surface 51a in the thickness direction of the bottom wall 51.

[0094] The contact portion 53 is located at a portion overlapping the rib 7A when viewed from above the wall surface 51a. In this embodiment, the contact portion 53 overlaps a portion where three adjacent ribs 7A share a common vertex when viewed from above the wall surface 51a. Therefore, the contact portion 53 is reinforced by the rib 7A.

[0095] In the above structure, rib 7A forms the outer shape of a polygon composed of three imaginary hexagons adjacent to each other without gaps. That is, rib 7A forms the sides other than the sides shared by adjacent imaginary hexagons among the three imaginary hexagons adjacent to each other without gaps. Therefore, compared with the honeycomb ribs in which three hexagons of the same size as the imaginary hexagons constituting rib 7A are adjacent to each other and arranged without gaps, rib 7A can suppress the amount of material required per unit area. In addition, rib 7A, when viewed from above the wall surface 51a, forms a closed cross-section of a polygon composed of parts of three imaginary hexagons arranged and connected to each other without gaps, so it is possible to disperse and receive the external force applied to the part that does not constitute the rib.

[0096] In the above configuration, the plurality of ribs 7A of the same shape are aligned with respect to the wall surface 51a having the ribs 7A. Thus, the plurality of ribs 7A of the same shape can be positioned without gaps, and the number of ribs 7A per unit area of ​​the wall surface 51a can be increased.

[0097] Therefore, it is possible to achieve weight reduction while ensuring rigidity for suppressing resonance of the inverter case 2A.

[0098] (Implementation 3)

[0099] (Structure of Inverter Device 1B)

[0100] Next, use Figure 4 , an inverter device 1B according to a third embodiment of the present invention will be described. Figure 4 The inverter device 1B according to the third embodiment of the present invention is Figure 1 The inverter device 1B is a cross-sectional view observed at the same position and direction as the line II-II. The inverter device 1B has an inverter housing 2B. The inverter housing 2B has a reinforcement portion 6B. In the inverter device 1B, the structure of the reinforcement portion 6B of the inverter housing 2B is different from the structure of the reinforcement portion 6A of the inverter housing 2A in the inverter device 1A of the second embodiment.

[0101] (Structure of reinforcement portion 6B)

[0102] like Figure 4 As shown, the reinforcement part 6B is composed of ribs 7A and ribs 7B. The reinforcement part 6B has a plurality of ribs 7A and ribs 7B. The ribs 7A, ribs 7B and the housing body 5 are composed of a single component.

[0103] In a plan view of the wall surface 51 a , the rib 7B has a polygonal outer shape obtained by rotating the rib 7A by 60 degrees or 180 degrees around the vertex P.

[0104] The plurality of ribs 7A are arranged in a row at equal intervals and without gaps in the same direction and are located on the wall surface 51a. The plurality of ribs 7B are arranged in a row at equal intervals and without gaps in the same direction and are located on the wall surface 51a. In addition, the plurality of ribs 7A and ribs 7B arranged in a row in the same direction are alternately adjacent and arranged at equal intervals and without gaps. In addition, in a top view of the wall surface 51a, the plurality of ribs 7A and 7B are located at a position overlapping with an imaginary line of a honeycomb in which a plurality of imaginary hexagons are arranged without gaps.

[0105] In the above structure, the inverter housing 2B has a plurality of ribs 7A located on the wall surface of the inverter housing 2B in one posture and a plurality of ribs 7B located on the wall surface of the inverter housing 2B in another posture different from the above one posture. Thus, the plurality of ribs 7A and the plurality of ribs 7B can be arranged alternately and without gaps on the wall surface of the inverter housing 2B. In addition, when viewed from above 51a, the ribs 7A and the ribs 7B form a closed cross section of a polygon formed by parts of three imaginary hexagons arranged and connected to each other without gaps, so that the external force applied to the portion that does not constitute the rib can be dispersed and received.

[0106] In reinforcement portion 6B, ribs 7A and 7B are positioned at equal intervals without gaps, thereby increasing the number of ribs 7A and 7B per unit area of ​​wall surface 51a. Therefore, inverter case 2B can be reduced in weight while ensuring rigidity for suppressing resonance.

[0107] (Implementation 4)

[0108] (Structure of Inverter Device 1C)

[0109] Next, use Figure 5 , an inverter device 1C according to a fourth embodiment of the present invention will be described. Figure 5 The inverter device 1C according to the fourth embodiment of the present invention is Figure 1 The inverter device 1C is a cross-sectional view observed at the same position and direction as the line II-II. The inverter device 1C has an inverter housing 2C. The inverter housing 2C has a reinforcement portion 6C. In the inverter device 1C, the structure of the reinforcement portion 6C of the inverter housing 2C is different from the structure of the reinforcement portion 6A of the inverter housing 2A in the inverter device 1A of the second embodiment.

[0110] like Figure 5 As shown, the inverter case 2C includes a case body portion 5 and a reinforcement portion 6C.

[0111] (Structure of reinforcement portion 6C)

[0112] The reinforcement part 6C is located on the bottom wall part 51, the surface on which the inverter 3 is mounted, in the housing body 5. The reinforcement part 6C is located on the inner wall surface 51a of the housing body 5 in the bottom wall part 51. The reinforcement part 6C is composed of ribs 7C. The reinforcement part 6C has a plurality of ribs 7C. In addition, the reinforcement part 6C is composed of ribs 7C of the same shape. The ribs 7C and the housing body 5 are composed of a single component.

[0113] In a top view of the wall surface 51a, the rib 7C has a shape in which three sides extending from a vertex P1 shared by three virtual hexagons adjacent to each other without gaps are connected to each other at the vertex P1. The three sides of the rib 7C are parts of each of the three virtual hexagons. Therefore, the rib 7C is composed of a part of a honeycomb in which a plurality of virtual hexagons are arranged without gaps.

[0114] The three sides constituting the rib 7C are positioned at equal intervals in the rotation direction with the vertex P1 as the rotation center. Therefore, the rib 7C is configured in a substantially Y shape having sides extending from the vertex P1 in three directions at equal intervals in the rotation direction.

[0115] A plurality of ribs 7C are provided on the entire wall surface 51a. The plurality of ribs 7C are arranged on the wall surface 51a with gaps therebetween. That is, the plurality of ribs 7C are not connected to each other. When viewed from above the wall surface 51a, the plurality of ribs 7C are located at a position overlapping with a virtual line of a honeycomb in which a plurality of virtual hexagons are arranged without gaps.

[0116] In addition, when viewed from above the wall surface 51a, the plurality of ribs 7C are shaped such that three sides, which are parts of three imaginary hexagons extending from the vertex P1 in the same three directions with respect to the wall surface 51a, are connected to each other at the vertex P1. That is, in the reinforcing portion 6C, the plurality of ribs 7C have the same posture as that of the ribs 7C defined by the positions of the three imaginary hexagons with the vertex P1 as a reference with respect to the wall surface 51a.

[0117] In a plan view of the wall surface 51a, at least a portion of the contact portion 53 of the bottom wall portion 51 is located at a portion overlapping with the rib 7C. In the present embodiment, in a plan view of the wall surface 51a, the center of the contact portion 53 overlaps with the vertex P1 of the rib 7C. Therefore, the contact portion 53 is reinforced by the rib 7C.

[0118] In the above structure, the rib 7C has a shape in which three sides extending from the vertex P1 shared by three imaginary hexagons adjacent to each other without gaps are connected to each other. Therefore, compared with a rib having a shape in which three imaginary hexagons of the same size as the imaginary hexagons constituting a part of the rib 7C are adjacent to each other and arranged without gaps, the rib 7C can suppress the amount of material required per unit area. In addition, the rib 7C is composed of three sides extending in three directions at equal intervals from the vertex P1 shared by the above three imaginary hexagons, so the rigidity of the wall surface of the inverter housing 2C can be improved. Therefore, it is possible to achieve lightweighting while ensuring the rigidity for suppressing the resonance of the inverter housing 2C.

[0119] (Implementation 5)

[0120] (Structure of Inverter Device 1D)

[0121] Next, use Figure 6, an inverter device 1D according to a fifth embodiment of the present invention will be described. Figure 6 The inverter device 1D according to the fifth embodiment of the present invention is Figure 1 The inverter device 1D is a cross-sectional view observed at the same position and direction as the line II-II. The inverter device 1D has an inverter housing 2D. The inverter housing 2D has a reinforcement portion 6D. In the inverter device 1D, the structure of the reinforcement portion 6D of the inverter housing 2D is different from the structure of the reinforcement portion 6C of the inverter housing 2C in the inverter device 1C of the fourth embodiment.

[0122] (Structure of reinforcement portion 6D)

[0123] like Figure 6 As shown, the reinforcement part 6D is composed of ribs 7C and ribs 7D. The reinforcement part 6D has a plurality of ribs 7C and ribs 7D. The ribs 7C, ribs 7D and the housing body 5 are composed of a single component.

[0124] The rib 7D has a shape consisting of parts of three imaginary hexagons arranged at positions rotated 60 degrees or 180 degrees with respect to the rib 7C with the vertex P1 as the center.

[0125] A plurality of ribs 7C and a plurality of ribs 7D are arranged on the entire wall surface 51a. The plurality of ribs 7C and the plurality of ribs 7D are arranged with gaps between them along the wall surface 51a. That is, the plurality of ribs 7C and the plurality of ribs 7D are not connected to each other. When viewed from above the wall surface 51a, the plurality of ribs 7C and the plurality of ribs 7D are located at a position overlapping with an imaginary line of a honeycomb formed by a plurality of imaginary hexagons.

[0126] The plurality of ribs 7C are located at the first, third, and fifth vertices of the imaginary hexagon constituting the imaginary line of the honeycomb. The plurality of ribs 7D are located at the second, fourth, and sixth vertices of the imaginary hexagon constituting the imaginary line of the honeycomb. That is, the plurality of ribs 7C and the plurality of ribs 7D are located at the vertices of the plurality of imaginary hexagons constituting the imaginary line of the honeycomb. Therefore, the reinforcing portion 6D constituted by the plurality of ribs 7C and the plurality of ribs 7D is configured in a shape that does not constitute a part of each side of the imaginary line of the honeycomb.

[0127] In the above-mentioned structure, the inverter housing 2D includes a plurality of ribs 7C and a plurality of ribs 7D. Thus, the plurality of ribs 7C and the plurality of ribs 7D can be combined and positioned to increase the number of ribs 7C and ribs 7D per unit area in the above-mentioned wall surface. In addition, when viewed from above the wall surface 51a, the plurality of ribs 7C and the plurality of ribs 7D are located at positions overlapping the vertices of the plurality of imaginary hexagons constituting the above-mentioned honeycomb shape on an imaginary line of a honeycomb shape formed by a plurality of imaginary hexagons with gaps between them. Thus, the reinforcement portion 6D is a shape that does not constitute a part of each side in the imaginary line of the honeycomb shape, and therefore has the rigidity required for suppressing resonance. Therefore, in the wall surface 51a, the rigidity of the range where the plurality of ribs 7C and the ribs 7D are located is increased. Therefore, it is possible to achieve lightweighting while ensuring the rigidity for suppressing the resonance of the inverter housing 2D.

[0128] (Implementation 6)

[0129] (Structure of Inverter Device 1E)

[0130] Next, use Figure 7 , an inverter device 1E according to a sixth embodiment of the present invention will be described. Figure 7 The inverter device 1E according to the sixth embodiment of the present invention is Figure 1 A cross-sectional view observed at the same position and direction as line II-II.

[0131] The inverter device 1E includes an inverter case 2E. The inverter case 2E includes a reinforcement portion 6E. The reinforcement portion 6E is different from the reinforcement portion 6 of the first embodiment in the positions of the plurality of ribs 7 .

[0132] (Structure of reinforcement portion 6E)

[0133] like Figure 7 As shown, the reinforcement part 6E is composed of ribs 7. The reinforcement part 6E has a plurality of ribs 7. In addition, the reinforcement part 6E is composed of a plurality of ribs 7 having the same shape and the same posture. The ribs 7 and the housing body 5 are composed of a single member.

[0134] The plurality of ribs 7 constitute a rib group 8 arranged in a row without gaps and at equal intervals along the wall surface 51a in the arrangement direction of two connected imaginary hexagons included in the ribs 7. The plurality of rib groups 8 are arranged at equal intervals without gaps. In the case where the reinforcing portion 6E includes three or more rows of rib groups 8, two rib groups 8 adjacent to each other without gaps on both sides of one rib group 8 are arranged at positions offset by different amounts in the same direction in which the row of the rib group 8 extends, or at positions offset by the same amount in different directions in which the row of the rib group 8 extends, relative to the central rib group 8.

[0135] In the above structure, the postures of the plurality of ribs 7 of the same shape relative to the wall surface 51a having the ribs 7 are consistent. Therefore, the plurality of ribs 7 of the same shape can be arranged without gaps between each other, and the number of ribs 7 per unit area of ​​the wall surface 51a can be increased. Therefore, the inverter case 2E can be lightweight while ensuring rigidity for suppressing resonance.

[0136] (Implementation 7)

[0137] (Structure of Inverter Device 1F)

[0138] Next, use Figure 8 , an inverter device 1F according to a seventh embodiment of the present invention will be described. Figure 8 The inverter device 1F according to the seventh embodiment of the present invention is Figure 1 A cross-sectional view observed at the same position and direction as line II-II.

[0139] The inverter device 1F includes an inverter case 2F. The inverter case 2F includes a reinforcement portion 6F. The reinforcement portion 6F is different from the reinforcement portion 6 of the first embodiment in that it includes a plurality of types of ribs 7, ribs 7E, and ribs 7F.

[0140] (Structure of reinforcement portion 6F)

[0141] like Figure 8 As shown, the reinforcement part 6F is composed of the rib 7, the rib 7E and the rib 7F. The reinforcement part 6F has a plurality of ribs 7, ribs 7E and ribs 7F. The ribs 7, ribs 7E, ribs 7F and the housing body 5 are composed of a single component.

[0142] The rib 7E has a polygonal outer shape having a shape obtained by rotating the rib 7 by 60 degrees around an arbitrary point in a plan view of the wall surface 51 a .

[0143] The rib 7F has a polygonal outer shape having a shape obtained by rotating the rib 7 by 120 degrees around an arbitrary point in a plan view of the wall surface 51 a .

[0144] A plurality of ribs 7, ribs 7E and ribs 7F are respectively arranged on the entire wall surface 51a. The plurality of ribs 7, ribs 7E and ribs 7F are arranged along the wall surface 51a. The plurality of ribs 7, ribs 7E and ribs 7F are located at a position overlapping with a virtual line of a honeycomb in which a plurality of virtual hexagons are arranged without gaps. The ribs 7, ribs 7E and ribs 7F constitute the rib group 8A. In a top view of the wall surface 51a, the ribs 7, ribs 7E and ribs 7F included in the rib group 8A are arranged without gaps with each other in a state of sharing a vertex P2.

[0145] The ribs 7, 7E and 7F constituting the rib group 8A respectively constitute a portion of the sides of the adjacent other ribs 7, 7E and 7F. Thus, in a plan view of the wall surface 51a, the plurality of ribs 7, 7E and 7F constituting a closed cross section of a polygon other than a hexagon are arranged in a state of sharing a portion of the sides.

[0146] The reinforcing portion 6F includes a plurality of rib groups 8A. The plurality of rib groups 8A are arranged in a row at equal intervals in the same direction, for example. When the reinforcing portion 6F includes a plurality of rib groups 8A arranged in a row, the plurality of rib groups 8A arranged in a row are arranged, for example, in a state of being separated from each other. In addition, the plurality of rib groups 8A arranged in a row may be arranged, for example, in a state of being in contact with each other.

[0147] In the above structure, the inverter housing 2F includes a plurality of ribs 7, ribs 7E, and ribs 7F. Thus, the plurality of ribs 7, ribs 7E, and ribs 7F can be positioned in combination, and the number of ribs 7, ribs 7E, and ribs 7F per unit area of ​​the wall surface can be increased. Therefore, the inverter housing 2F can be lightweight while ensuring rigidity for suppressing resonance.

[0148] (Implementation 8)

[0149] (Structure of Inverter Device 1G)

[0150] Next, use Fig. 9 , an inverter device 1G according to an eighth embodiment of the present invention will be described. Fig. 9 The inverter device 1G according to the eighth embodiment of the present invention is Figure 1 A cross-sectional view observed at the same position and direction as line II-II.

[0151] The inverter device 1G includes an inverter case 2G. The inverter case 2G includes a reinforcement portion 6G. The reinforcement portion 6G is different from the reinforcement portion 6F of the seventh embodiment in the positions of the various ribs 7, the ribs 7E, and the ribs 7F.

[0152] (Structure of reinforcement portion 6G)

[0153] like Fig. 9 As shown, rib 7, rib 7E and rib 7F constitute rib group 8B. When viewed from above the wall surface 51a, rib 7, rib 7E and rib 7F included in rib group 8B are arranged in a ring shape without gaps. Reinforcement portion 6G is composed of rib 7, rib 7E and rib 7F. Reinforcement portion 6F has a plurality of ribs 7, rib 7E and rib 7F. Ribs 7, ribs 7E, ribs 7F and housing body 5 are composed of a single component.

[0154] The ribs 7, 7E and 7F constituting the rib group 8B respectively constitute a part of the sides of the other adjacent ribs 7, 7E and 7F. In addition, the rib group 8B forms a hexagon by parts of the ribs 7, 7E and 7F. Thus, in a plan view of the wall surface 51a, the plurality of ribs 7, 7E and 7F constituting a closed cross section of a polygon other than a hexagon are positioned in a state of sharing a part of the sides.

[0155] The reinforcing portion 6G includes a plurality of rib groups 8B. The plurality of rib groups 8B are positioned on the wall surface 51a without gaps therebetween in a state of sharing at least a portion of their sides. Alternatively, the plurality of rib groups 8B may be positioned in a state of being separated from each other, for example.

[0156] In the above structure, the inverter housing 2G includes a plurality of ribs 7, ribs 7E, and ribs 7F. Thus, the plurality of ribs 7, ribs 7E, and ribs 7F can be positioned in combination, and the number of ribs 7, ribs 7E, and ribs 7F per unit area of ​​the above wall surface can be increased. In addition, by using a portion of each of the three ribs 7, 7E, and 7F to form a hexagon, the amount of material required per unit area can be suppressed compared to a honeycomb rib composed of a hexagon having the same size as a virtual hexagon constituting a portion of the ribs 7, 7E, and 7F. Therefore, it is possible to achieve lightweighting while ensuring rigidity for suppressing resonance of the inverter housing 2G.

[0157] (Implementation method 9)

[0158] (Structure of Inverter Device 1H)

[0159] Next, use Fig.10 , an inverter device 1H according to a ninth embodiment of the present invention will be described. Fig.10 The inverter device 1H according to the ninth embodiment of the present invention is Figure 1 A cross-sectional view observed at the same position and direction as line II-II.

[0160] The inverter device 1H includes an inverter case 2H. The inverter case 2H includes a reinforcement portion 6H. The reinforcement portion 6H is different from the reinforcement portion 6 of the first embodiment in that it includes a rib 7E.

[0161] (Structure of reinforcement portion 6H)

[0162] like Fig.10 As shown, the reinforcement part 6H is composed of the rib 7 and the rib 7E. The reinforcement part 6H has a plurality of ribs 7 and ribs 7E. The rib 7, the rib 7E and the housing body 5 are composed of a single component.

[0163] A plurality of ribs 7 and ribs 7E are arranged on the entire wall surface 51a. The plurality of ribs 7 and ribs 7E are arranged along the wall surface 51a. When viewed from above the wall surface 51a, the plurality of ribs 7 and ribs 7E are located at a position overlapping with an imaginary line of a honeycomb in which a plurality of imaginary hexagons are arranged without gaps. The ribs 7 and ribs 7E constitute the rib group 8C. When viewed from above the wall surface 51a, the ribs 7E are positioned without gaps relative to the ribs 7 in the arrangement direction of two connected imaginary hexagons included in the ribs 7.

[0164] The reinforcing portion 6H includes a plurality of rib groups 8C. The plurality of rib groups 8C are located on the wall surface 51a without gaps therebetween. Therefore, a portion of the rib 7 and a portion of the rib 7E constitute a portion of the side of the rib 7 and the rib 7E of the adjacent other rib groups 8C, respectively. In this way, when viewed from above the wall surface 51a, the plurality of ribs 7 and ribs 7E constituting a closed cross section of a polygon other than a hexagon are positioned in a state of sharing a portion of the side.

[0165] In the above structure, the inverter housing 2H includes a plurality of ribs 7 and ribs 7E. Thus, the plurality of ribs 7 and ribs 7E can be combined and positioned to increase the number of ribs 7 and ribs 7E per unit area of ​​the wall surface. Therefore, the inverter housing 2H can be lightweight while ensuring rigidity for suppressing resonance.

[0166] (Implementation 10)

[0167] (Structure of Inverter Device 1I)

[0168] Next, use Fig.11 , an inverter device 1I according to a tenth embodiment of the present invention will be described. Fig.11 The inverter device 1I of the embodiment 10 of the present invention is Figure 1 A cross-sectional view observed at the same position and direction as line II-II.

[0169] The inverter device 1I includes an inverter case 2I. The inverter case 2I includes a reinforcement portion 6I. The reinforcement portion 6I is different from the reinforcement portion 6 of the first embodiment in that it includes a rib 7F.

[0170] (Structure of reinforcement portion 6I)

[0171] like Fig.11 As shown, the reinforcing portion 6I is composed of the ribs 7 and the ribs 7F. The reinforcing portion 6I has a plurality of ribs 7 and ribs 7F. The ribs 7, ribs 7F and the housing body 5 are composed of a single component.

[0172] A plurality of ribs 7 and ribs 7F are arranged on the entire wall surface 51a. The plurality of ribs 7 and ribs 7F are arranged along the wall surface 51a. When viewed from above the wall surface 51a, the plurality of ribs 7 and ribs 7F are located at a position overlapping with an imaginary line of a honeycomb in which a plurality of imaginary hexagons are arranged without gaps. The ribs 7 and ribs 7F constitute a rib group 8D. When viewed from above the wall surface 51a, the ribs 7F are positioned without gaps relative to the ribs 7 in the arrangement direction of two connected imaginary hexagons included in the ribs 7.

[0173] The reinforcing portion 6I includes a plurality of rib groups 8D. The plurality of rib groups 8D are located on the wall surface 51a without gaps therebetween. Therefore, a portion of the rib 7 and the rib 7F respectively constitute a portion of the side of the rib 7 and the rib 7F of the other adjacent rib groups 8D. In this way, when viewed from above the wall surface 51a, the plurality of ribs 7 and the rib 7F constituting a closed cross section of a polygon other than a hexagon are positioned in a state of sharing a portion of the side.

[0174] In the above structure, the inverter housing 2I includes a plurality of ribs 7 and ribs 7F. Thus, the plurality of ribs 7 and ribs 7F can be combined and positioned to increase the number of ribs 7 and ribs 7F per unit area of ​​the wall surface. Therefore, the inverter housing 2I can be lightweight while ensuring rigidity for suppressing resonance.

[0175] (Motor device 100)

[0176] Next, use Fig.12 The motor device 100 according to each embodiment will be described. Fig.12 1 is a perspective view showing a schematic structure of a motor device 100 according to each embodiment. The motor device 100 is mounted on a vehicle such as a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle (PHV), an electric vehicle (EV), etc., which uses a motor as a driving source, and is used as a driving source for the above-mentioned vehicle. Fig.12 As shown, the motor device 100 includes a motor 110, a motor housing 120, and any one of the inverter devices 1, 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, and 1I. Hereinafter, a case where the motor device 100 includes the inverter device 1 will be described.

[0177] The motor 110 is a so-called inner rotor type motor in which a rotor 112 is rotatably positioned about a central axis P3 in a cylindrical stator 111 . The motor 110 is accommodated in a motor housing 120 .

[0178] The motor housing 120 has a cylindrical peripheral wall portion 121 that surrounds the motor 110 from the radially outer side. The inverter device 1 is located on one side of the peripheral wall portion 121 in the radial direction.

[0179] The side wall 52 of the inverter housing 2 is connected to the outer peripheral surface of the peripheral wall 121 of the motor housing 120. The motor housing 120 and the inverter housing 2 are integrally formed of aluminum die-cast components. The stator 111 of the motor 110 is fixed inside the peripheral wall 121. A cover member 122 is bolted to the end of one axial side of the peripheral wall 121.

[0180] In the above configuration, inverter case 2 of inverter device 1 is connected to motor housing 120 housing motor 110. Thus, motor device 100 including inverter device 1 capable of achieving weight reduction while ensuring rigidity to suppress resonance of inverter case 2 can be realized.

[0181] (Other embodiments)

[0182] The embodiments of the present invention have been described above, but the above embodiments are merely examples for implementing the present invention. Therefore, the present invention is not limited to the above embodiments, and the above embodiments can be appropriately modified and implemented within the scope of the present invention.

[0183] In the above embodiments, the bottom wall 51 of the inverter case 2, 2A, 2B, 2C, 2D, 2E, 2F, 2G, 2H, 2I is a rectangular plate-shaped member in plan view. However, the bottom wall of the inverter case may have any shape as long as it is plate-shaped.

[0184] In the above-mentioned first embodiment, the postures of the plurality of ribs 7 with respect to the wall surface 51a are the same. However, the postures of the plurality of ribs with respect to the wall surface may be different.

[0185] In the above-mentioned Embodiments 2 to 10, the contact portion 53 overlaps with the ribs 7, 7A, 7B, 7C, 7D, 7E, 7F in a plan view of the wall surface 51a. However, the contact portion may be located at a position not overlapping with the rib in a plan view of the wall surface.

[0186] In the above-mentioned embodiments, the reinforcement 6, 6A, 6B, 6C, 6D, 6E, 6F, 6G, 6H, 6I is located on the bottom wall 51 on which the inverter 3 is mounted in the housing body 5. In addition, the reinforcement 6, 6A, 6B, 6C, 6D, 6E, 6F, 6G, 6H, 6I is located on the wall surface 51a of the bottom wall 51 facing the inner side of the housing body 5. However, the reinforcement may also be located on a wall portion other than the wall portion on which the inverter is mounted in the housing body. The reinforcement only needs to be located on at least one of the bottom wall portion and the side wall portion of the inverter housing. In addition, the reinforcement may also be located on the wall surface facing the outer side of the housing body.

[0187] In the above-mentioned embodiments, the reinforcing parts 6, 6A, 6B, 6C, 6D, 6E, 6F, 6G, 6H, 6I are composed of ribs 7, 7A, 7B, 7C, 7D, 7E, 7F. However, the reinforcing parts may have ribs of shapes other than the ribs 7, 7A, 7B, 7C, 7D, 7E, 7F. For example, the reinforcing parts may have hexagonal ribs. In addition, the reinforcing parts may have reinforcing structures other than ribs.

[0188] In the above-mentioned first embodiment, the rib 7 is composed of a part of each of two of the plurality of imaginary hexagons connected to each other without a gap when viewed from above the wall surface 51a. However, the rib only needs to be composed of a part of each of at least two of the plurality of imaginary hexagons connected to each other without a gap when viewed from above the wall surface having the rib.

[0189] In the above-mentioned first embodiment, the rib 7 has a polygonal shape consisting of two imaginary hexagons connected to each other without gaps when viewed from above the wall surface 51a. However, the rib may also have a polygonal shape consisting of three or more imaginary hexagons connected to each other without gaps when viewed from above the wall surface having the rib. In other words, the rib only needs to have a polygonal shape consisting of at least two imaginary hexagons connected to each other without gaps when viewed from above the wall surface having the rib.

[0190] In the above-mentioned embodiments 1 to 3 and 6, in the reinforcing portion 6, 6A, 6B, 6E, the plurality of ribs 7, 7A, 7B are arranged without gaps along the wall surface 51a. However, in the reinforcing portion, the plurality of ribs may be arranged with gaps therebetween along the wall surface.

[0191] In the above-mentioned Embodiment 4, in the reinforcement portion 6C, the plurality of ribs 7C have the same posture relative to the wall surface 51a. However, in the reinforcement portion, the plurality of ribs may be arranged in different postures relative to the wall surface.

[0192] In the above-mentioned embodiments, the plurality of ribs 7, 7A, 7B, 7C, 7D, 7E, and 7F are located at positions overlapping with the imaginary lines of the honeycomb formed by the plurality of imaginary hexagons when viewed from above the wall surface 51a. However, the plurality of ribs may be located at positions not overlapping with the imaginary lines of the honeycomb formed by the plurality of imaginary hexagons when viewed from above the wall surface.

[0193] In the above-mentioned Embodiments 1 to 3 and 6 to 10, the plurality of ribs 7, 7A, 7B, 7E, 7F are located on the wall surface 53a without any gaps therebetween. However, the plurality of ribs may be located on the wall surface with gaps therebetween.

[0194] In the above-mentioned Embodiments 1 and 6 to 10, the plurality of rib groups 8, 8A, 8B, 8C, 8D are located on the wall surface 51a without any gaps therebetween. However, the plurality of rib groups may be located on the wall surface with gaps therebetween. (1)

[0196] An inverter device comprises: an inverter; and an inverter housing in which the inverter is arranged. The inverter housing has ribs on at least one of an inner surface and an outer surface. In a top view of a wall surface of the inverter housing having the ribs, the ribs are formed into a shape other than a hexagon by parts of at least two of a plurality of imaginary hexagons arranged and connected to each other without gaps. (2)

[0198] In the inverter device described in (1), the rib has a shape constituting a polygonal outer shape constituted by at least two virtual hexagons arranged without a gap between them. (3)

[0200] In the inverter device described in (1) or (2), the rib has a shape constituting an outer shape of a polygon consisting of three virtual hexagons adjacent to each other without a gap. (4)

[0202] In the inverter device described in any one of (1) to (3), the rib has a shape in which three sides extending from vertices common to three virtual hexagons adjacent to each other without a gap are connected to each other. (5)

[0204] The inverter device described in any one of (1) to (4) includes a plurality of the ribs. The plurality of the ribs include a plurality of ribs of the same shape. When the wall surface of the inverter case having the plurality of ribs of the same shape is viewed from above, the plurality of ribs of the same shape have the same posture. (6)

[0206] In the inverter device described in any one of (1) to (4), there is a plurality of the ribs. The plurality of the ribs include a plurality of ribs of the same shape. When looking down at the wall surface of the inverter housing having the plurality of ribs of the same shape, the plurality of ribs of the same shape include ribs having one posture and ribs having another posture different from the one posture. (7)

[0208] A motor device comprising: an inverter device as described in any one of (1) to (6); a motor controlled by the inverter device; and a motor housing for accommodating the motor, wherein the inverter housing of the inverter device is connected to the motor housing.

[0209] Availability in production

[0210] The utility model can be used in an inverter device and a motor device having the inverter device.

Claims

1. An inverter device, comprising: Inverter; and An inverter housing equipped with the inverter, It is characterized in that The inverter housing has ribs on at least one of the inner surface and the outer surface. In a plan view of the wall surface having the rib in the inverter case, the rib is formed into a shape other than a hexagon by a portion of each of at least two of a plurality of virtual hexagons arranged and connected to each other without a gap.

2. The inverter device according to claim 1, characterized in that: The rib has a shape having an outer shape that is a polygon formed by at least two imaginary hexagons arranged without a gap between them.

3. The inverter device according to claim 1, characterized in that: The rib has an outer shape that constitutes a polygon consisting of three virtual hexagons adjacent to each other without a gap.

4. The inverter device according to claim 1, characterized in that: The rib has a shape in which three sides extending from a common vertex of three virtual hexagons adjacent to each other without a gap are connected to each other.

5. The inverter device according to claim 1, characterized in that: having a plurality of the above ribs, The plurality of ribs include a plurality of ribs of the same shape, In a plan view of the wall surface of the inverter case having the plurality of ribs of the same shape, the plurality of ribs of the same shape have the same posture.

6. The inverter device according to claim 1, characterized in that: having a plurality of the above ribs, The plurality of ribs include a plurality of ribs of the same shape, In a plan view of the wall surface of the inverter case having the plurality of ribs of the same shape, the plurality of ribs of the same shape include ribs having one posture and ribs having another posture different from the one posture.

7. A motor device, characterized in that: have: The inverter device according to claim 1; A motor controlled by the inverter device; and a motor housing for housing the motor, The inverter case of the inverter device is connected to the motor housing.

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