Power conversion device

Abstract

The invention provides a power conversion device. The power conversion device is provided with a power conversion device main body and a cover member attached to the power conversion device main body, and the cover member includes a cover main body portion, a device main body attachment portion, and a buffer portion disposed between the cover main body portion and the power conversion device main body.

Description

Technical Field

[0001] The present invention relates to a power conversion device, and more particularly to a power conversion device equipped with a cover member. Background Art

[0002] Conventionally, a power conversion device having a cover member is known. Such a power conversion device is disclosed in, for example, Japanese Patent Application Publication No. 2017-99174.

[0003] The above-mentioned Japanese Patent Publication No. 2017-99174 discloses a converter device (power conversion device), which includes: a converter device main body, which is provided with a slit for heat dissipation; and a protective cover, which covers the converter device main body. In the above-mentioned Japanese Patent Publication No. 2017-99174, the protective cover is installed on the converter device main body in a manner that covers the slit for heat dissipation. In addition, in the above-mentioned Japanese Patent Publication No. 2017-99174, by providing a gap between the protective cover and the converter device main body, when an impact from the outside is applied to the protective cover, a part of the impact is absorbed by the gap, thereby protecting the converter device main body from the impact from the outside.

[0004] In the power conversion device (converter device) of Japanese Patent Publication No. 2017-99174, depending on the size of the impact, the impact from the outside is sometimes not absorbed but directly applied to the converter device body. Therefore, it is required to reliably protect the converter device body from the impact from the outside. Summary of the invention

[0005] The present invention has been made to solve the above-mentioned problems, and one object of the present invention is to provide a power conversion device capable of protecting a power conversion device main body from an external impact.

[0006] In order to achieve the above-mentioned purpose, an electric power conversion device according to one aspect of the present invention comprises: an electric power conversion device body, which is provided with a plurality of vents; and a cover component, which is installed on the electric power conversion device body and covers the vents, the cover component comprising: a cover body portion; a device body mounting portion, which mounts the cover body portion on the electric power conversion device body; and a buffer portion, which is arranged between the cover body portion and the electric power conversion device body.

[0007] According to the power conversion device of one aspect of the present invention, as described above, the shock from the outside is buffered by the buffer portion, and the power conversion device main body can be protected from the shock from the outside.

[0008] In the power conversion device of the above aspect, it is preferred that the buffer portion has a protrusion protruding from the cover body portion toward the power conversion device body. If so configured, the buffer portion has a protrusion, and a gap can be easily formed between the cover body portion and the power conversion device body, so that the formed gap and the buffer portion can be used to further reduce the impact from the outside. As a result, the impact from the outside applied to the power conversion device body is further reduced, so the power conversion device body can be effectively protected from the impact from the outside.

[0009] In this case, it is preferable that the protrusion and the cover body are formed integrally. With this configuration, unlike the case where the cover body and the protrusion are separate bodies, there is no need to separately provide the cover body and the protrusion, thereby suppressing an increase in the number of components.

[0010] In the power conversion device having the protrusion in the buffer portion, it is preferred that, in the cross section obtained by cutting along the extension direction of the cover body, the cross-sectional area of ​​the power conversion device body side of the protrusion is smaller than the cross-sectional area of ​​the cover body side of the protrusion. If so configured, by making the cross-sectional area of ​​the power conversion device body side of the protrusion smaller, the protrusion can be formed smaller toward the power conversion device body, so that the top end of the protrusion can be easily deformed by external impact. As a result, the energy of the external impact is absorbed by the deformation of the top end of the protrusion, so that both the cover member and the power conversion device body can be more effectively protected from external impact.

[0011] In the power conversion device of the first aspect, the protrusion is preferably configured to cushion external impact by plastic deformation. If so configured, the tip of the protrusion receives external impact and plastically deforms, thereby easily absorbing energy of the external impact.

[0012] In the power conversion device of the above aspect, it is preferred that a plurality of buffers are provided on the cover body at predetermined intervals. If so configured, it is possible to disperse the impact from the outside by configuring a plurality of buffers, thereby effectively protecting both the cover member and the power conversion device body from the impact from the outside. In addition, by configuring the buffers at predetermined intervals, it is possible to support the cover body by using the buffers in a manner that the cover member does not tilt relative to the power conversion device body when the cover member is mounted on the power conversion device body.

[0013] In the power conversion device of the above-mentioned aspect, it is preferred that the cover body is formed by a plate-like member, and the buffer portion is arranged near the corner of the plate-like member. If so configured, the buffer portion is arranged near the corner of the plate-like member, so that the vicinity of the center of the plate-like member is easily bent. When an impact from the outside is applied to the vicinity of the center of the plate-like member, the impact from the outside can be buffered by bending near the center of the plate-like member. Here, the vicinity of the corner is not only a position overlapping with the corner, but also a broader concept including a position separated from the corner and a position close to the corner rather than close to the center.

[0014] In this case, it is preferred that the buffering portion is disposed near the center of the plate-like member in addition to being disposed near the corners of the plate-like member. If so configured, when an external impact is applied near the center, the plate-like member near the center bends, and the buffering portion buffers the impact, thereby making it easier to buffer the impact. Here, the near center is not only a position overlapping with the center, but also a broader concept including a position separated from the center and a position close to the center rather than close to the corners.

[0015] In the power conversion device of the above-mentioned aspect, it is preferred that the mounting portion of the device body has a fitting portion that fits into the vent through elastic deformation. If so configured, the fitting portion is inserted into the vent in an elastically deformed state, and the fitting portion is restored to its original shape, thereby allowing the cover member to be installed on the vent, and thus the cover member can be easily installed on the power conversion device body. In addition, by elastically deforming the fitting portion, the cover member can be removed from the vent, and thus the cover member can be easily removed from the power conversion device body. In addition, the vent can be used to install the cover member, so there is no need to provide a dedicated mounting portion, and the structure can be simplified accordingly.

[0016] In the power conversion device of the first aspect, it is preferred that the cover body is formed of a plate-like member, and a plurality of device body mounting portions are provided and arranged on the plate-like member at predetermined intervals. If so configured, by arranging the device body mounting portions at predetermined intervals, the cover member can be mounted on the power conversion device body using the device body mounting portions in a manner that the cover member does not tilt relative to the power conversion device body.

[0017] In the power conversion device of the above-mentioned aspect, it is preferred that the vents are respectively provided on the upper surface and both side surfaces of the power conversion device body, and the cover member includes: an upper surface cover member, which covers the vent provided on the upper surface of the power conversion device body; a right side mask member, which covers the vent provided on the right side surface of the power conversion device body; and a left side mask member, which covers the vent provided on the left side surface of the power conversion device body, and the upper surface cover member, the left side mask member and the right side mask member are each independently provided. If it is configured in this way, unlike the case where the upper surface cover member, the left side mask member and the right side mask member are formed integrally, it is not necessary to prepare a cover member for each power conversion device having a different external shape. In addition, the upper surface cover member, the left side mask member and the right side mask member each have a buffer portion, thereby buffering the impact from the outside, so that the upper surface and both side surfaces of the power conversion device body, the upper surface cover member, the left side mask member and the right side mask member can be protected from the impact from the outside.

[0018] In this case, it is preferred that the upper surface cover member is configured to be formed in the shape of the letter L and to cover a portion of the right side cover member or a portion of the left side cover member. If configured in this way, the upper surface cover member can be used to press and fix the right side cover member or the left side cover member, so that the right side cover member or the left side cover member can be fixed to the power conversion device more firmly.

[0019] In the power conversion device of the first aspect, it is preferred that the cover body is made of resin and has a groove for suppressing warping. If so, the groove is used to suppress warping of the cover body during resin molding, so that the cover member is not easy to fall off from the power conversion device body.

[0020] In the power conversion device of the above aspect, it is preferred that the power conversion device body can accommodate the power conversion module, and includes a first housing portion having a vent and a second housing portion connected to the first housing portion, and a cover member including a buffer portion is mounted on the power conversion device body in a manner that covers the connection portion between the first housing portion and the second housing portion. If so configured, by covering the connection portion between the first housing portion and the second housing portion with the cover member, the connection portion between the first housing portion and the second housing portion is pressed toward the power conversion device body side with the cover member, thereby preventing the connection state from being released. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view of the power conversion device according to the first embodiment.

[0022] Figure 2 It is a top view of the power conversion device according to the first embodiment.

[0023] Figure 3 It is a left side view of the power conversion device according to the first embodiment.

[0024] Figure 4 It is a right side view of the power conversion device according to the first embodiment.

[0025] Figure 5 It is a front view of the upper surface cover member of the first embodiment.

[0026] Figure 6 It is a bottom view of the upper surface cover member of the first embodiment.

[0027] Figure 7 It is a perspective view of the left side cover member of the first embodiment.

[0028] Figure 8 It is a perspective view of the right side mask member of the first embodiment.

[0029] Fig. 9A It is a figure which shows the state before mounting the cover member.

[0030] Fig. 9B It is a figure which shows the state after mounting the cover member.

[0031] Fig. 10A It is a diagram showing a state before the cover member is attached to the power conversion device according to the second embodiment.

[0032] Fig. 10B It is a diagram showing a state in which a cover member is attached to the power conversion device according to the second embodiment. DETAILED DESCRIPTION

[0033] Hereinafter, embodiments of the present invention will be described based on the drawings.

[0034] [First embodiment]

[0035] The configuration of the power conversion device 100 according to the first embodiment will be described.

[0036] like Figure 1 As shown, the power conversion device 100 is provided with an operating unit 50. In addition, in the present embodiment, the side provided with the operating unit 50 is set as the front side and is set as the Y1 side, the back side opposite to the Y1 side is set as the Y2 side, and the direction connecting the Y1 side and the Y2 side is set as the Y direction. The up-down direction orthogonal to the Y direction is set as the Z direction, the upper surface side is set as the Z1 side, and the bottom surface side is set as the Z2 side. In addition, the left-right direction orthogonal to the Y direction and the Z direction is set as the X direction, the left side when the Y2 side is viewed from the Y1 side is set as the X1 side, and the right side when the Y2 side is viewed from the Y1 side is set as the X2 side.

[0037] The power conversion device 100 includes a power conversion device body 1, an upper surface cover member 2, a left side cover member 3, and a right side cover member 4. The upper surface cover member 2, the left side cover member 3, and the right side cover member 4 can be mounted on the power conversion device body 1, and can also be removed from the power conversion device body 1. In addition, the upper surface cover member 2, the left side cover member 3, and the right side cover member 4 are examples of "cover members" described in the claims.

[0038] like Figure 2 to Figure 4 As shown, the power conversion device 100 is, for example, a converter device. A power conversion module is housed inside the power conversion device body 1. The power conversion device body 1 has a vent 11 that can release heat generated from the power conversion module. In the first embodiment, the power conversion device 100 is operated in a manner that suppresses the heat generated inside the power conversion device body 1. The power conversion device body 1 is formed of a resin containing polyphenylene ether (NORYL resin).

[0039] A plurality of vents 11 are provided on the upper surface, left side surface, and right side surface of the power conversion device body 1. The plurality of vents 11 are composed of beam portions 11a, and are opening portions divided by the beam portions 11a. The vents 11 are provided to release heat generated inside the power conversion device body 1 to the outside. In the first embodiment, the power conversion device 100 is operated in such a way that the temperature inside the power conversion device body 1 does not reach a high temperature. Therefore, it is also possible not to actively release heat using the vents 11, and therefore it is possible to provide an upper surface cover member 2, a left side cover member 3, and a right side cover member 4 at the vents 11.

[0040] like Figure 3 and Figure 4 As shown, the power conversion device body 1 can accommodate the power conversion module, and includes a first housing portion 1a having a vent 11 and a second housing portion 1b connected to the first housing portion 1a. The Y1 side of the first housing portion 1a is open, and the Y2 side of the second housing portion 1b is open. The power conversion device body 1 is formed by mounting the second housing portion 1b on the first housing portion 1a and connecting them using a connecting portion 1c. The connecting portion 1c includes, for example, a snap-fitting portion not shown in the figure provided on the second housing portion 1b, and a hole portion (not shown) provided on the first housing portion 1a for the snap-fitting portion to be engaged.

[0041] like Figure 2 As shown, the upper surface cover member 2 is mounted on the upper surface of the power conversion device body 1. The upper surface cover member 2 is mounted so as to cover the vent 11 provided on the upper surface of the power conversion device body 1. The upper surface cover member 2 is formed of a resin containing the same polyphenylene ether (NORYL resin) as the power conversion device body 1.

[0042] like Figure 3 As shown, the left side mask member 3 is mounted on the left side of the power conversion device body 1. The left side mask member 3 is mounted so as to cover the vent 11 provided on the left side of the power conversion device body 1. The left side mask member 3 is formed of a resin containing the same polyphenylene ether (NORYL resin) as the power conversion device body 1.

[0043] like Figure 4 As shown, the right side mask member 4 is mounted on the right side of the power conversion device body 1. The right side mask member 4 is mounted so as to cover the vent 11 provided on the right side of the power conversion device body 1. The right side mask member 4 is formed of a resin containing the same polyphenylene ether (NORYL resin) as the power conversion device body 1.

[0044] [Detailed structure of upper surface cover member]

[0045] like Figure 5 and Figure 6 As shown, the upper surface cover member 2 includes an upper surface cover main body portion 21, an upper surface device body mounting portion 22 and an upper surface buffer portion 23. The upper surface cover main body portion 21, the upper surface device body mounting portion 22 and the upper surface buffer portion 23 are formed integrally. The upper surface device body mounting portion 22 and the upper surface buffer portion 23 are arranged on the surface of the upper surface cover main body portion 21 opposite to the power conversion device body 1. In addition, the upper surface cover main body portion 21 is an example of the "cover main body portion" described in the claims. The upper surface device body mounting portion 22 is an example of the "device body mounting portion" described in the claims. The upper surface buffer portion 23 is an example of the "buffer portion" described in the claims.

[0046] The upper surface cover member 2 has an L-shaped shape when viewed from the front side. Specifically, the upper surface cover body 21 of the upper surface cover member 2 is installed on the upper surface of the power conversion device body 1, and the rectangular first upper surface plate member 21a and the rectangular second upper surface plate member 21b that partially covers the right side cover member 4 are formed integrally. Figure 5 In the embodiment, the second upper surface plate-like member 21b includes the curved portion 2a, but may not include the curved portion 2a. In the first embodiment, when viewed from the front, the length L1 of the first upper surface plate-like member 21a in the extending direction (X direction) is greater than the length L2 of the second upper surface plate-like member 21b in the extending direction (Z direction). The aspect ratio (ratio of the longitudinal length to the lateral length) of the first upper surface plate-like member 21a is small. In addition, the first upper surface plate-like member 21a and the second upper surface plate-like member 21b are examples of "plate-like members" described in the claims.

[0047] like Fig. 9A and Fig. 9BAs shown, the upper surface device body mounting portion 22 is configured to mount the upper surface cover body portion 21 on the power conversion device body 1. The upper surface device body mounting portion 22 has a fitting portion 22a that is fitted into the beam portion 11a of the vent 11 by elastic deformation. The fitting portion 22a is, for example, a snap-fit ​​assembly, and the fitting portion 22a is inserted into the vent 11 while being pressed inward (the fitting portion 22a on the X1 side is toward the X2 side, and the fitting portion 22a on the X2 side is toward the X1 side), and the fitting portion 22a is elastically deformed outward (the fitting portion 22a on the X1 side is toward the X1 side, and the fitting portion 22a on the X2 side is toward the X2 side), thereby fitting (hooking) into the beam portion 11a of the vent 11. The upper surface device body mounting portion 22 is provided on the first upper surface plate-shaped member 21a, but not on the second upper surface plate-shaped member 21b.

[0048] like Figure 6 As shown in FIG. 1 , the upper surface device body mounting portion 22 is arranged on the first upper surface plate-shaped member 21a at a predetermined interval. The upper surface device body mounting portion 22 is arranged corresponding to the position of the vent 11. Figure 6 As shown, the upper surface device body mounting portion 22 is arranged at four locations. However, the number of locations where the upper surface device body mounting portion 22 is arranged is not particularly limited as long as it is two or more locations. In addition, although an example in which the upper surface device body mounting portion 22 is arranged at both end surfaces in the X direction is shown, the upper surface device body mounting portion 22 may also be arranged at the center in the X direction.

[0049] A plurality of upper surface buffer portions 23 are provided on the upper surface cover main body 21 at predetermined intervals from each other. Specifically, the upper surface buffer portion 23 is disposed near the corner 2b of the first upper surface plate-like member 21a. Here, near the corner 2b is a broader concept that includes not only a position overlapping with the corner 2b but also a position separated from the corner 2b and is close to the corner 2b rather than close to the center. The upper surface buffer portion 23 is disposed at four locations at the four corners. In addition, the upper surface buffer portion 23 is disposed near the center in addition to being disposed near the corners. Here, near the center is a broader concept that includes not only a position overlapping with the center but also a position separated from the center and is close to the center rather than close to the corners. Figure 6 In the case of, two upper surface buffer parts 23 are arranged above and below the center. In addition, two or more upper surface buffer parts 23 are arranged near the center. The upper surface buffer part 23 is provided in the first upper surface plate-shaped member 21a, but not in the second upper surface plate-shaped member 21b.

[0050] The upper surface buffer portion 23 is disposed between the upper surface cover body portion 21 and the power conversion device body 1, and is in contact with the power conversion device body 1. The upper surface cover body portion 21 and the power conversion device body 1 are in contact with each other by means of the upper surface buffer portion 23. In addition, a gap G is formed between the power conversion device body 1 and the portion of the upper surface cover body portion 21 facing the power conversion device body 1, except for the portion where the upper surface device body mounting portion 22 and the upper surface buffer portion 23 are provided (see Fig. 9B ). Therefore, the upper surface cover main body 21 can bend toward the gap, and thus can buffer the impact from the outside.

[0051] The upper surface buffer portion 23 buffers the impact from the outside. Specifically, the upper surface buffer portion 23 has a protrusion 23a, which protrudes from the upper surface cover body portion 21 toward the power conversion device body 1 and buffers the impact from the outside. In the cross section obtained by cutting along the extension direction (X direction) of the upper surface cover body portion 21, the cross-sectional area of ​​the protrusion 23a on the power conversion device body 1 side (Z2 side) is smaller than the cross-sectional area of ​​the protrusion 23a on the upper surface cover body portion 21 side (Z1 side).

[0052] The protrusion 23a is configured to have a narrow top shape that tapers from the upper surface cover body 21 toward the power conversion device body 1, and cushions external impact by plastic deformation (crushing) of the tapered top. Figure 6 , an example in which the protrusion 23a is truncated cone-shaped is shown. The protrusion 23a is formed of a resin containing polyphenylene ether (NORYL resin) which is the same as the power conversion device body 1 and the upper surface cover body 21. In addition, the protrusion 23a and the upper surface cover body 21 are formed integrally.

[0053] The upper cover member 2 (upper cover body 21) contacts the power conversion device body 1 by the protrusion 23a. Therefore, the portion of the upper cover body 21 where the protrusion 23a is not formed and the power conversion device body 1 are arranged separately from each other. In addition, the portion of the upper cover body 21 where the protrusion 23a is not formed is separated from the power conversion device body 1, so that when receiving an impact from the outside, the portion of the upper cover body 21 where the protrusion 23a is not formed is bent. Thus, the impact from the outside is buffered.

[0054] [Detailed structure of the left side mask member]

[0055] like Figure 7As shown, the left side mask component 3 includes a left side mask main body 31, a left side device main body mounting portion 32 and a left side buffer portion 33. The left side mask component 3 has a rectangular shape. In addition, the left side mask main body 31 is an example of a "mask main body" described in the claims. The left side device main body mounting portion 32 is an example of a "device main body mounting portion" described in the claims. The left side buffer portion 33 is an example of a "buffer portion" described in the claims.

[0056] The left side mask body 31 is formed by a left side panel-shaped member 31a. The left side mask body 31, the left side device body mounting portion 32 and the left side buffer portion 33 are formed integrally. The left side device body mounting portion 32 and the left side buffer portion 33 are provided on the surface of the left side mask body 31 that is opposite to the power conversion device body 1. The left side panel-shaped member 31a is a rectangular shape with a large aspect ratio (ratio of the length in the longitudinal direction to the length in the lateral direction).

[0057] and Fig. 9A as well as Fig. 9B Similarly to the upper surface cover member 2 shown, the left side device body mounting portion 32 is configured to mount the left side cover body portion 31 on the power conversion device body 1. The left side device body mounting portion 32 has a fitting portion 32a that is fitted into the beam portion 11a of the vent 11 by elastic deformation. The fitting portion 32a is, for example, a snap-fit ​​assembly, and the fitting portion 32a is inserted into the vent 11 while being pressed inwardly, and the fitting portion 32a is elastically deformed outwardly, thereby fitting into the beam portion 11a of the vent 11.

[0058] like Figure 7 As shown in FIG. 1 , the left side device body mounting portion 32 is arranged on the left side mask body portion 31 at a predetermined interval. The left side device body mounting portion 32 is arranged corresponding to the position of the vent 11. Figure 7 In the example shown, due to the long longitudinal length in the Z direction, in addition to the left side device body mounting portion 32 being provided at two locations near the end portion on the Z1 side and near the end portion on the Z2 side, from the viewpoint of preventing warping, a left side device body mounting portion 32 is also provided at a position offset from the center in the Z direction toward the Z2 side. In addition, if the left side mask member 3 can be mounted on the power conversion device body 1 without warping, the number of the left side device body mounting portions 32 may be either one or two or more.

[0059] A plurality of left side buffer portions 33 are provided on the left side mask main body 31 at predetermined intervals. Specifically, the left side buffer portion 33 is arranged near the corner 3a of the left side mask main body 31. Here, the vicinity of the corner 3a is not only a position overlapping with the corner 3a but also a broader concept including a position separated from the corner 3a and a position close to the corner 3a rather than close to the center. A plurality of left side buffer portions 33 are provided. The left side buffer portion 33 is arranged at two locations of the corner 3a on the Y1 side. The left side buffer portion 33 is also arranged at two locations at a position offset from the corner 3a on the Y2 side toward the center. The left side buffer portion 33 is also arranged near the center. At Figure 7 In the case of, two left side buffer parts 33 are arranged above and below the center. In addition, two or more left side buffer parts 33 are arranged near the center. The left side buffer part 33 is made of the same material as the left side mask main body 31.

[0060] The left side buffer portion 33 is disposed between the left side mask main body portion 31 and the power conversion device main body 1, and is in contact with the power conversion device main body 1. The left side mask main body portion 31 and the power conversion device main body 1 are brought into contact by the left side buffer portion 33. In addition, a gap is formed between the power conversion device main body 1 and a portion of the left side mask main body portion 31 opposite to the power conversion device main body 1, except for a portion where the left side device main body mounting portion 32 and the left side buffer portion 33 are provided. Therefore, the left side mask main body portion 31 can bend toward the gap, and thus can buffer an impact from the outside.

[0061] The left side buffer 33 buffers the impact from the outside. Specifically, the left side buffer 33 has a protrusion 33a, which protrudes from the left side mask main body 31 toward the power conversion device main body 1 and buffers the impact from the outside. In the cross section obtained by cutting along the extending direction (Z direction) of the left side mask main body 31, the cross-sectional area of ​​the protrusion 33a on the power conversion device main body 1 side (X2 side) is smaller than the cross-sectional area of ​​the protrusion 33a on the left side mask main body 31 side (X1 side).

[0062] The protrusion 33a is configured to have a narrow top shape that tapers from the left side mask main body 31 toward the power conversion device main body 1, and cushions external impact by plastic deformation (crushing) of the tapered top. Figure 7 , an example in which the protrusion 33a is truncated cone-shaped is shown. The protrusion 33a is formed of a resin containing polyphenylene ether (NORYL resin) which is the same as the power conversion device body 1 and the left side mask body 31. In addition, the protrusion 33a and the left side mask body 31 are formed integrally.

[0063] The left side mask member 3 (left side mask main body 31) contacts the power conversion device main body 1 by means of the protrusion 33a. Therefore, the portion of the left side mask main body 31 where the protrusion 33a is not formed and the power conversion device main body 1 are arranged separately from each other. In addition, the portion of the left side mask main body 31 where the protrusion 33a is not formed is separated from the power conversion device main body 1, so that when subjected to an impact from the outside, the portion of the left side mask main body 31 where the protrusion 33a is not formed is bent. Thus, the impact from the outside is buffered.

[0064] [Detailed structure of right side mask member]

[0065] like Figure 8 As shown, the right side mask component 4 includes a right side mask main body portion 41, a right side device body mounting portion 42, a right side buffer portion 43 and a groove portion 44. The right side mask main body portion 41, the right side device body mounting portion 42 and the right side buffer portion 43 are formed integrally. The right side device body mounting portion 42 and the right side buffer portion 43 are arranged on the surface of the right side mask main body portion 41 opposite to the power conversion device body 1. In addition, the right side mask main body portion 41 is an example of a "mask main body portion" described in the claims. The right side device body mounting portion 42 is an example of a "device body mounting portion" described in the claims. The right side buffer portion 43 is an example of a "buffer portion" described in the claims.

[0066] The right side mask body 41 is formed by the following components: the first right side panel-shaped member 41a, which is located on the Z2 side and is provided with a right side device body mounting portion 42; the second right side panel-shaped member 41b, which is located on the Z1 side and is provided with a right side device body mounting portion 42; and the third right side panel-shaped member 41c, whose length in the Y direction is shorter than the length in the Y direction of the first right side panel-shaped member 41a and the second right side panel-shaped member 41b, and connects the first right side panel-shaped member 41a and the second right side panel-shaped member 41b. Thus, the right side mask member 4 has a letter U shape. In addition, the length L3 of the first right side panel-shaped member 41a along the Z direction is larger than the length L4 of the second right side panel-shaped member 41b along the Z direction. In the second right side panel-shaped member 41b, the length (thickness) t2 of the X direction of the end side of the Z1 side is smaller than the length (thickness) t1 of the X direction of the end side of the Z2 side. In addition, the first right panel-shaped member 41a, the second right panel-shaped member 41b, and the third right panel-shaped member 41c are examples of the "plate-shaped member" described in the claims.

[0067] Similar to the upper surface cover member 2 shown in FIG. 9 , the right side device body mounting portion 42 is configured to mount the right side cover body 41 on the power conversion device body 1. The right side device body mounting portion 42 has a fitting portion 42a that is fitted into the beam portion 11a of the vent 11 by elastic deformation. The fitting portion 42a is, for example, a snap-fit ​​assembly, and the fitting portion 42a is inserted into the vent 11 while being pressed inward, and the fitting portion 42a is elastically deformed outward, thereby fitting into the beam portion 11a of the vent 11. The fitting portion 42a is provided on the first right side panel-shaped member 41a.

[0068] In addition, the right side device body mounting portion 42 has a claw portion 42b that is not elastically deformable. The claw portion 42b mounts the right side mask body portion 41 to the power conversion device body 1 by hooking on the vent 11. The claw portion 42b is provided on the second right side panel-shaped member 41b. In addition, the thickness of the Z1 side of the surface of the second right side panel-shaped member 41b on the side opposite to the surface provided with the claw portion 42b is smaller than the thickness on the Z2 side. The claw portion 42b is provided, for example, in any of the cases where interference occurs with a component disposed inside the power conversion device body 1 and a space in which the interlocking portion 42a is interlocked is smaller, or in the case where interference occurs with a component disposed inside the power conversion device body 1 and a space in which the interlocking portion 42a is interlocked is smaller.

[0069] like Figure 1 As shown, the second upper plate-shaped member 21b of the upper cover member 2 covers the thinner portion of the second right panel-shaped member 41b of the right cover member 4. Thus, the fixation by the claw portion 42b can be strengthened.

[0070] like Figure 8 As shown in FIG. 1 , the right side device body mounting portion 42 is disposed at a predetermined interval between the first right side panel-shaped member 41a and the second right side panel-shaped member 41b. The right side device body mounting portion 42 is disposed corresponding to the position of the vent 11. Figure 8 In the example shown, the aspect ratio (ratio of the length in the longitudinal direction to the length in the transverse direction) of the right side mask member 4, which is the sum of the first right side panel-shaped member 41a, the second right side panel-shaped member 41b, and the third right side panel-shaped member 41c, is large, and is a long longitudinal length in the Z direction, so the right side device main body mounting portion 42 is provided near the end of the Z1 side of the second right side panel-shaped member 41b and near the end of the Z2 side of the first right side panel-shaped member 41a. In addition, the number of the right side device main body mounting portion 42 can be either one or more than two. In addition, the right side device main body mounting portion 42 can also be additionally provided near the end of the Z2 side of the second right side panel-shaped member 41b, near the end of the Z1 side of the first right side panel-shaped member 41a, and at least one of the third right side panel-shaped member 41c.

[0071] The right side buffer 43 is provided in plurality on the right side mask main body 41 in a manner spaced apart from each other by a predetermined interval. Specifically, the right side buffer 43 is arranged near the corner 4a of the first right side panel-shaped member 41a and the second right side panel-shaped member 41b. Here, the corner 4a is not only a position overlapping with the corner 4a, but also a wider concept including a position separated from the corner 4a and close to the corner 4a rather than close to the center. In addition, the corner 4a refers to the part where the two sides of the first right side panel-shaped member 41a and the second right side panel-shaped member 41b intersect. The right side buffer 43 is provided in plurality. The right side buffer 43 is arranged at two positions of the corner 4a on the Y1 side. The right side buffer 43 is also arranged at two positions at the position adjacent to the wall portion of the recess forming the Y2 side. The right side buffer 43 is made of the same material as the right side mask main body 41.

[0072] The right side buffer portion 43 is disposed between the right side mask main body portion 41 and the power conversion device main body 1, and is in contact with the power conversion device main body 1. The right side mask main body portion 41 and the power conversion device main body 1 are in contact with each other by the right side buffer portion 43. In addition, a gap is formed between the power conversion device main body 1 and a portion of the right side mask main body portion 41 opposite to the power conversion device main body 1, except for a portion where the right side device main body mounting portion 42 and the right side buffer portion 43 are provided. Therefore, the right side mask main body portion 41 can bend toward the gap, and thus can buffer an impact from the outside.

[0073] The right side buffer 43 buffers the impact from the outside. Specifically, the right side buffer 43 has a protrusion 43a, which protrudes from the right side mask body 41 toward the power conversion device body 1 and buffers the impact from the outside. In the cross section obtained by cutting along the extending direction (Z direction) of the right side mask body 41, the cross-sectional area of ​​the protrusion 43a on the power conversion device body 1 side (X1 side) is smaller than the cross-sectional area of ​​the protrusion 43a on the right side mask body 41 side (X2 side).

[0074] The protrusion 43a is configured to have a narrow top shape that tapers from the right side mask main body 41 toward the power conversion device main body 1, and cushions external impact by plastic deformation (crushing) of the tapered top. Figure 8 , an example in which the protrusion 43a is truncated cone-shaped is shown. The protrusion 43a is formed of a resin containing polyphenylene ether (NORYL resin) which is the same as the power conversion device body 1 and the right side mask body 41. In addition, the protrusion 43a and the right side mask body 41 are formed integrally.

[0075] The right side mask member 4 (right side mask main body 41) contacts the power conversion device main body 1 by means of the protrusion 43a. Therefore, the portion of the right side mask main body 41 where the protrusion 43a is not formed and the power conversion device main body 1 are arranged separately from each other. In addition, the portion of the right side mask main body 41 where the protrusion 43a is not formed is separated from the power conversion device main body 1, so that when subjected to an impact from the outside, the portion of the right side mask main body 41 where the protrusion 43a is not formed is bent. Thus, the impact from the outside is buffered.

[0076] The groove 44 is provided to suppress the warping of the right side mask member 4. The groove 44 is continuously formed to extend in the Z direction. Figure 8 As shown, the groove 44 is not provided to both end surfaces of the right mask member 4 in the Z direction.

[0077] (Effects of the First Embodiment)

[0078] In the first embodiment, the following effects can be obtained.

[0079] In the first embodiment, the power conversion device 100 comprises: a power conversion device body 1, which is provided with a plurality of vents 11; and a cover member (upper surface cover member 2, left side cover member 3, right side cover member 4), which is installed on the power conversion device body 1 and covers the vents 11, and the cover member (upper surface cover member 2, left side cover member 3, right side cover member 4) includes: a cover body part (upper surface cover body part 21, left side cover body part 31, right side cover body part 41); a device body mounting part (upper surface cover body part 21, left side cover body part 31, right side cover body part 41); The power conversion device body 1 includes a cover body (upper surface cover body 21, left side cover body 31, right side cover body 41) and a buffer (upper surface buffer 23, left side buffer 33, right side buffer 43) disposed between the cover body (upper surface cover body 21, left side cover body 31, right side cover body 41) and the power conversion device body 1. Thus, the buffer (upper surface buffer 23, left side buffer 33, right side buffer 43) buffers the impact from the outside, and the power conversion device body 1 can be protected from the impact from the outside.

[0080] In addition, in the first embodiment, as described above, the buffering parts (upper surface buffering part 23, left side buffering part 33, right side buffering part 43) have protrusions (protrusions 23a, protrusions 33a, protrusions 43a) protruding toward the power conversion device body 1. Thus, by having the protrusions in the buffering parts (upper surface buffering part 23, left side buffering part 33, right side buffering part 43), it is possible to easily form a gap between the cover body part (upper surface cover body part 21, left side cover body part 31, right side cover body part 41) and the power conversion device body 1, so that the formed gap and the buffering parts (upper surface buffering part 23, left side buffering part 33, right side buffering part 43) can be used to further reduce the impact from the outside. Thus, the impact from the outside applied to the power conversion device body 1 is further reduced, so the power conversion device body 1 can be effectively protected from the impact from the outside.

[0081] In the first embodiment, as described above, the protrusions (protrusions 23a, 33a, 43a) and the cover body (upper cover body 21, left face mask body 31, right face mask body 41) are integrally formed. Thus, unlike the case where the cover body (upper cover body 21, left face mask body 31, right face mask body 41) and the protrusions (protrusions 23a, 33a, 43a) are separate, it is not necessary to separately provide the cover body (upper cover body 21, left face mask body 31, right face mask body 41) and the protrusions (protrusions 23a, 33a, 43a), so that the increase in the number of components can be suppressed.

[0082] In the first embodiment, as described above, in the cross section obtained by cutting along the extending direction of the cover body (upper cover body 21, left cover body 31, right cover body 41), the cross-sectional area of ​​the protrusion (protrusion 23a, protrusion 33a, protrusion 43a) on the power conversion device body 1 side is smaller than the cross-sectional area of ​​the protrusion (protrusion 23a, protrusion 33a, protrusion 43a) on the cover body (upper cover body 21, left cover body 31, right cover body 41) side. Thus, the cross-sectional area of ​​the protrusion (protrusion 23a, protrusion 33a, protrusion 43a) on the power conversion device body 1 side is smaller, and the protrusion (protrusion 23a, protrusion 33a, protrusion 43a) can be formed smaller toward the power conversion device body 1, so that the top end of the protrusion (protrusion 23a, protrusion 33a, protrusion 43a) can be easily deformed by the impact from the outside. As a result, the tip portions of the protrusions (protrusions 23a, 33a, 43a) deform to absorb energy of external impact, so that the power conversion device body 1 can be more effectively protected from external impact.

[0083] In addition, in the first embodiment, as described above, the protrusions (protrusions 23a, 33a, 43a) are configured to cushion external impacts by plastic deformation. Thus, the top ends of the protrusions (protrusions 23a, 33a, 43a) are plastically deformed by external impacts, and thus can easily absorb the energy of external impacts.

[0084] In the first embodiment, as described above, a plurality of buffers (upper surface buffer 23, left side buffer 33, right side buffer 43) are provided on the cover body (upper surface cover body 21, left side cover body 31, right side cover body 41) at predetermined intervals. Thus, by disposing a plurality of buffers (upper surface buffer 23, left side buffer 33, right side buffer 43), impact from the outside can be dispersed, so that both the cover member (upper surface cover member 2, left side cover member 3, right side cover member 4) and the power conversion device body 1 can be effectively protected from impact from the outside. In addition, by arranging the buffer portions (upper surface buffer portion 23, left side buffer portion 33, right side buffer portion 43) at predetermined intervals, the buffer portions (upper surface buffer portion 23, left side buffer portion 33, right side buffer portion 43) can be used to support the cover body portion (upper surface cover body portion 21, left side cover body portion 31, right side cover body portion 41) in a manner such that the cover member (upper surface cover member 2, left side cover member 3, right side cover member 4) will not tilt relative to the power conversion device body 1 when the cover member (upper surface cover member 2, left side cover member 3, right side cover member 4) is installed on the power conversion device body 1.

[0085] In addition, in the first embodiment, as described above, the cover body (upper surface cover body 21, left side cover body 31, right side cover body 41) is formed by plate-like members (first upper surface plate-like member 21a, second upper surface plate-like member 21b, left side panel-like member 31a, first right side panel-like member 41a, second right side panel-like member 41b, third right side panel-like member 41c), and the buffer portion (upper surface buffer portion 23, left side buffer portion 33, right side buffer portion 43) is arranged near the corners of the plate-like members (first upper surface plate-like member 21a, second upper surface plate-like member 21b, left side panel-like member 31a, first right side panel-like member 41a, second right side panel-like member 41b, third right side panel-like member 41c). Thus, by arranging the buffer portions (upper surface buffer portion 23, left side buffer portion 33, right side buffer portion 43) near the corners of the plate-like members (first upper surface plate-like member 21a, second upper surface plate-like member 21b, left side panel-like member 31a, first right side panel-like member 41a, second right side panel-like member 41b, third right side panel-like member 41c), the plate-like members (first upper surface plate-like member 21a, second upper surface plate-like member 21b, left side panel-like member 31a, first right side panel-like member 41a, second right side panel-like member 41b, third right side panel-like member 41c) can be easily bent near the center. When an external impact is applied near the center of the plate-like members (the first upper surface plate-like member 21a, the second upper surface plate-like member 21b, the left side panel-like member 31a, the first right side panel-like member 41a, the second right side panel-like member 41b, and the third right side panel-like member 41c), the plate-like members (the first upper surface plate-like member 21a, the second upper surface plate-like member 21b, the left side panel-like member 31a, the first right side panel-like member 41a, the second right side panel-like member 41b, and the third right side panel-like member 41c) are bent near the center, thereby being able to buffer the external impact.

[0086] In addition, in the first embodiment, as described above, the buffering portion (upper surface buffering portion 23, left side buffering portion 33, right side buffering portion 43) is arranged near the center of the plate-like member (the first upper surface plate-like member 21a, the second upper surface plate-like member 21b, the left side panel-like member 31a, the first right side panel-like member 41a, the second right side panel-like member 41b, the third right side panel-like member 41c) in addition to being arranged near the corners of the plate-like member. Thus, when an impact from the outside is applied near the center, the plate-like member (the first upper surface plate-like member 21a, the second upper surface plate-like member 21b, the left side panel-like member 31a, the first right side panel-like member 41a, the second right side panel-like member 41b, the third right side panel-like member 41c) is bent near the center, and the buffering portion (upper surface buffering portion 23, the left side buffering portion 33, the right side buffering portion 43) is buffered, thereby, it is easier to buffer the impact.

[0087] In the first embodiment, as described above, the device body mounting portion (upper surface device body mounting portion 22, left side device body mounting portion 32, right side device body mounting portion 42) has a fitting portion (fitting portion 22a, fitting portion 32a, fitting portion 42a) that is fitted into the vent 11 by elastic deformation. Thus, the fitting portion (fitting portion 22a, fitting portion 32a, fitting portion 42a) is inserted into the vent 11 in an elastically deformed state, and the fitting portion (fitting portion 22a, fitting portion 32a, fitting portion 42a) is restored to its original shape, thereby enabling the cover member (upper surface cover member 2, left side cover member 3, right side cover member 4) to be mounted on the vent 11, and thus the cover member (upper surface cover member 2, left side cover member 3, right side cover member 4) can be easily mounted on the power conversion device body 1. In addition, by elastically deforming the fitting parts (fitting parts 22a, fitting parts 32a, fitting parts 42a), the cover members (upper surface cover member 2, left side cover member 3, right side cover member 4) can be removed from the vent 11, so that the cover members (upper surface cover member 2, left side cover member 3, right side cover member 4) can be easily removed from the power conversion device body 1. In addition, the cover members (upper surface cover member 2, left side cover member 3, right side cover member 4) can be installed by using the vent 11, so there is no need to provide a dedicated installation part, and the structure can be simplified accordingly.

[0088] In addition, in the first embodiment, as described above, the cover main body (upper surface cover main body 21, left side cover main body 31, right side cover main body 41) is formed by a plate-like member (a first upper surface plate-like member 21a, a second upper surface plate-like member 21b, a left side panel-like member 31a, a first right side panel-like member 41a, a second right side panel-like member 41b, a third right side panel-like member 41c), and a plurality of device body mounting parts (upper surface device body mounting part 22, left side device body mounting part 32, right side device body mounting part 42) are provided and are arranged on the plate-like members at predetermined intervals. Thus, by arranging the device body mounting parts (upper surface device body mounting part 22, left side device body mounting part 32, right side device body mounting part 42) in a manner separated by predetermined intervals, the cover members (upper surface cover member 2, left side cover member 3, right side cover member 4) can be mounted on the power conversion device body 1 using the device body mounting parts (upper surface device body mounting part 22, left side device body mounting part 32, right side device body mounting part 42) in a manner that the cover members (upper surface cover member 2, left side cover member 3, right side cover member 4) will not tilt relative to the power conversion device body 1.

[0089] In addition, in the first embodiment, as described above, the vents 11 are respectively provided on the upper surface and both side surfaces of the power conversion device body 1, and the cover member includes: an upper surface cover member 2, which covers the vents 11 provided on the upper surface of the power conversion device body 1; a right side mask member 4, which covers the vents 11 provided on the right side surface of the power conversion device body 1; and a left side mask member 3, which covers the vents 11 provided on the left side surface of the power conversion device body 1, and the upper surface cover member 2, the left side mask member 3 and the right side mask member 4 are each independently provided, and each has a deformable buffer portion (upper surface buffer portion 23, left side buffer portion 33, right side buffer portion 43) for buffering impact from the outside. Therefore, unlike the case where the upper surface cover member 2, the left side mask member 3 and the right side mask member 4 are formed integrally, it is not necessary to prepare a cover member for each power conversion device 100 having a different external shape. In addition, since the upper surface cover component 2, the left side cover component 3 and the right side cover component 4 respectively have buffer portions (upper surface buffer portion 23, left side buffer portion 33, right side buffer portion 43), impacts from the outside are buffered, thereby protecting the upper surface and two side surfaces of the power conversion device main body 1, the upper surface cover component 2, the left side cover component 3 and the right side cover component 4 from impacts from the outside.

[0090] In the first embodiment, as described above, the upper surface cover member 2 is configured to be formed in the shape of the letter L and partially cover the right side cover member 4 or the left side cover member 3. Thus, the right side cover member 4 or the left side cover member 3 can be pressed and fixed by the upper surface cover member 2, so that the right side cover member 4 or the left side cover member 3 can be fixed to the power conversion device 100 more firmly.

[0091] In the first embodiment, as described above, the right side mask body 41 is made of resin and has a groove 44 for suppressing warping. Thus, when the resin is formed, the groove 44 is used to suppress the warping of the cover body (upper surface cover body 21, left side mask body 31, right side mask body 41), so that the cover components (upper surface cover component 2, left side mask component 3, right side mask component 4) are difficult to fall off from the power conversion device body 1.

[0092] [Second embodiment]

[0093] Next, refer to Fig. 10A and Fig. 10B The structure of the right side mask member 4 of the second embodiment of the present invention is described. In the power conversion device 200 of the second embodiment, the right side mask member 4 is configured to improve the connection strength of the connection portion 1c of the power conversion device body 1. In addition, the same structure as the first embodiment is marked with the same figure mark as the first embodiment and the description is omitted.

[0094] like Fig. 10A and Fig. 10B As shown, in the power conversion device 200 of the second embodiment, the right side mask member 4 is installed on the right side of the power conversion device body 1 in a manner that covers the connection portion 1c between the first housing portion 1a and the second housing portion 1b. Thus, the connection state of the connection portion 1c can be suppressed from being released by the right side mask member 4. In addition, since the right side mask member 4 is covered and fixed by the upper surface mask member 2, the connection of the connection portion 1c can be made more firmly.

[0095] The other structures of the second embodiment are the same as those of the above-mentioned first embodiment.

[0096] (Effects of the Second Embodiment)

[0097] In the second embodiment, as described above, the power conversion device 200 comprises: a power conversion device body 1, which is provided with a plurality of vents 11; and a cover member (upper surface cover member 2, left side cover member 3, right side cover member 4), which is installed on the power conversion device body 1 and covers the vents 11, and the cover member (upper surface cover member 2, left side cover member 3, right side cover member 4) includes: a cover body part (upper surface cover body part 21, left side cover body part 31, right side cover body part 41); a device body mounting part (upper surface device body mounting portion 22, left side device body mounting portion 32, right side device body mounting portion 42), which mounts the cover body portion (upper surface cover body portion 21, left side cover body portion 31, right side cover body portion 41) to the power conversion device body 1; and a buffer portion (upper surface buffer portion 23, left side buffer portion 33, right side buffer portion 43), which is arranged between the cover body portion (upper surface cover body portion 21, left side cover body portion 31, right side cover body portion 41) and the power conversion device body 1. Thus, the buffer portion (upper surface buffer portion 23, left side buffer portion 33, right side buffer portion 43) buffers the impact from the outside, and the power conversion device body 1 can be protected from the impact from the outside.

[0098] In the second embodiment, as described above, the power conversion device body 1 can accommodate the power conversion module, and includes the first housing portion 1a having the vent 11 and the second housing portion 1b connected to the first housing portion 1a, and the right side mask member 4 including the right side buffer portion 43 is mounted on the power conversion device body 1 in a manner that covers the connection portion 1c between the first housing portion 1a and the second housing portion 1b. Thus, by covering the connection portion 1c between the first housing portion 1a and the second housing portion 1b with the right side mask member 4, the connection portion 1c between the first housing portion 1a and the second housing portion 1b can be pressed toward the power conversion device body 1 side with the right side mask member 4, thereby preventing the connection state from being released.

[0099] In addition, other effects of the second embodiment are the same as those of the first embodiment.

[0100] [Modifications]

[0101] The embodiments disclosed herein are illustrative in all aspects and are not restrictive. The scope of the present invention is indicated by the claims rather than the description of the embodiments described above, and includes all modifications (variations) within the meaning and scope equivalent to the claims.

[0102] For example, in the first and second embodiments described above, the upper surface cover member 2, the left side cover member 3, and the right side cover member 4 are shown as separate bodies, but the present invention is not limited thereto. In the present invention, the upper surface cover member 2, the left side cover member 3, and the right side cover member 4 may also be integrated. In this case, a buffer portion is provided on the upper surface and both side surfaces of the cover member that are opposite to the power conversion device body 1.

[0103] In addition, in the above-mentioned first embodiment and second embodiment, an example is shown in which the power conversion device body 1, the upper surface cover member 2, the left side cover member 3 and the right side cover member 4 are made of resin, but the present invention is not limited to this. In the present invention, the power conversion device body 1, the upper surface cover member 2, the left side cover member 3 and the right side cover member 4 may also be made of a material other than resin, such as metal.

[0104] In addition, in the above-mentioned first embodiment and second embodiment, an example is shown in which the power conversion device body 1, the upper surface cover member 2, the left side cover member 3 and the right side cover member 4 are made of the same material, but the present invention is not limited to this. In the present invention, the power conversion device body 1, the upper surface cover member 2, the left side cover member 3 and the right side cover member 4 may be made of different materials. In this case, the power conversion device body 1 is made of a material having a hardness greater than the hardness of the material constituting the upper surface cover member 2, the left side cover member 3 and the right side cover member 4.

[0105] In addition, in the above-mentioned first embodiment and second embodiment, an example in which the buffer portion and the cover body portion are formed integrally is shown, but the present invention is not limited to this. In the present invention, the buffer portion and the cover body portion may be formed separately. In this case, the method of fixing the buffer portion to the cover body portion is not particularly limited. In addition, although an example in which the buffer portion and the cover body portion are formed integrally is shown, the buffer portion and the power conversion device body may be formed integrally, or the buffer portion may be formed integrally on both the cover body portion and the power conversion device body.

[0106] In addition, in the first and second embodiments described above, examples are shown in which the buffer portion (protrusion) and the cover body are made of the same material, but the present invention is not limited thereto. In the present invention, the buffer portion (protrusion) and the cover body may be made of different materials. In this case, the buffer portion (protrusion) may be made of an elastically deformable member or a plastically deformable member.

[0107] In addition, in the above-mentioned first embodiment and second embodiment, an example is shown in which the buffer portion (protrusion) and the power conversion device body 1 are made of the same material, but the present invention is not limited to this. In the present invention, the buffer portion (protrusion) and the power conversion device body 1 may be made of different materials. In this case, the buffer portion (protrusion) may also be formed of a material softer than the power conversion device body 1.

[0108] In addition, in the above-mentioned first embodiment and second embodiment, the buffer part (protrusion) is arranged in the vicinity of the corner part and the vicinity of the center of the plate-like member, but the present invention is not limited to this. In the present invention, the buffer part (protrusion) may be arranged in the vicinity of the corner part and the vicinity of the center of the plate-like member.

[0109] In addition, in the above-mentioned first embodiment and second embodiment, the fitting portion 22a of the upper surface device body mounting portion 22 of the upper surface cover member 2, the fitting portion 32a of the left side device body mounting portion 32 of the left side cover member 3, and the fitting portion 42a of the right side device body mounting portion 42 of the right side cover member 4 are shown as examples of snap-fit ​​assembly, but the present invention is not limited to this. In the present invention, it is also possible to use a fitting method other than snap-fit ​​assembly, such as bolts and nuts. In addition, it is also possible to install the upper surface cover member 2, the left side cover member 3, and the right side cover member 4 on the power conversion device body 1 by using a method other than fitting, such as threaded fastening.

[0110] In addition, in the above-mentioned first embodiment and second embodiment, an example in which the protrusion is in the shape of a truncated cone is shown, but the present invention is not limited to this. In the present invention, the shape of the protrusion is not limited to the truncated cone shape, and may also be a cylindrical shape or a conical shape. In other words, the top of the protrusion may be flat, pointed, or arc-shaped. In addition, the base of the protrusion (the portion in contact with the cover body) may be circular or polygonal. Furthermore, the protrusion may be provided with a step between the cover body side and the top end side.

[0111] In addition, in the above-mentioned first embodiment and second embodiment, an example in which the groove portion 44 is not provided to both end surfaces in the Z direction is shown, but the present invention is not limited thereto. In the present invention, the groove portion 44 may be provided to both end surfaces in the Z direction. In addition, the groove portion 44 is not limited to a continuous groove portion 44, and may be composed of a plurality of groove portions 44 formed discontinuously.

[0112] In the first and second embodiments, the groove 44 is provided in the right mask member 4 , but the present invention is not limited thereto. In the present invention, the groove 44 may be provided in the upper mask member 2 or the left mask member 3 .

[0113] In addition, in the above-mentioned first embodiment and second embodiment, an example is shown in which the length of the first upper surface plate-like member 21a in the extension direction (X direction) is greater than the length of the second upper surface plate-like member 21b in the extension direction (Z direction) when viewed from the front, but the present invention is not limited to this. In the present invention, when viewed from the front, the length of the first upper surface plate-like member 21a in the extension direction (X direction) can be smaller than the length of the second upper surface plate-like member 21b in the extension direction (Z direction), or can be the same as the length of the second upper surface plate-like member 21b in the extension direction (Z direction).

[0114] In addition, in the first and second embodiments described above, an example is shown in which a part of the upper surface cover member 2 covers a part of the right side mask member 4, but the present invention is not limited thereto. In the present invention, a part of the upper surface cover member 2 may not cover the right side mask member 4 but may cover a part of the left side mask member 3, or may cover both the left side mask member 3 and the right side mask member 4. In addition, the upper surface cover member 2 may not cover either the left side mask member 3 or the right side mask member 4.

[0115] In addition, in the above-mentioned first embodiment and second embodiment, the first upper surface plate-like member 21a and the second upper surface plate-like member 21b are shown as examples of rectangular shapes, but the present invention is not limited to this. In the present invention, the first upper surface plate-like member 21a and the second upper surface plate-like member 21b can be a quadrilateral shape including a square shape other than a rectangular shape, or a polygonal shape other than a quadrilateral shape.

[0116] In addition, in the above-mentioned first embodiment and the second embodiment, the example of the rectangular shape with large aspect ratio of the left side panel-shaped member 31a is shown, but the present invention is not limited to this. In the present invention, it can also be that the aspect ratio of the left side panel-shaped member 31a is small. In addition, the left side panel-shaped member 31a can be a quadrilateral shape including a square shape other than the rectangular shape, and can also be a polygon other than the quadrilateral shape.

[0117] In addition, in the above-mentioned first embodiment and second embodiment, an example is shown in which the right side device main body mounting portion 42 of the right side mask member 4 has the claw portion 42b, but the present invention is not limited to this. In the present invention, it is also possible that the right side device main body mounting portion 42 does not have the claw portion 42b. In addition, it is also possible that the upper surface device main body mounting portion 22 of the upper surface mask member 2 and the left side device main body mounting portion 32 of the left side mask member 3 have the claw portion 42b.

[0118] In addition, in the above-mentioned first embodiment and second embodiment, the example that the length along the Z direction of the first right panel-shaped member 41a is larger than the length along the Z direction of the second right panel-shaped member 41b is shown, but the present invention is not limited to this. In the present invention, the length along the Z direction of the first right panel-shaped member 41a can be the same as the length along the Z direction of the second right panel-shaped member 41b, and can also be smaller than the length along the Z direction of the second right panel-shaped member 41b.

[0119] In the first and second embodiments, the right mask component 4 is shown as having a U-shaped example, but the present invention is not limited thereto. In the present invention, the right mask component 4 may be a quadrilateral including a rectangular shape, or a polygonal shape other than a quadrilateral shape.

[0120] In the second embodiment, the right side mask member 4 is installed on the power conversion device body 1 in a manner covering the connection portion 1c, but the present invention is not limited thereto. In the present invention, the left side mask member 3 may be installed on the power conversion device body 1 in a manner covering the connection portion 1c.

Claims

1. A power conversion device, wherein: The power conversion device has: A power conversion device body, which is provided with a plurality of vents; as well as a cover member mounted on the power conversion device body and covering the vent, The cover member includes: a cover body; a device body mounting portion for mounting the cover body to the power conversion device body; and a buffer portion disposed between the cover body and the power conversion device body.

2. The power conversion device according to claim 1, wherein: The buffer portion includes a protrusion that protrudes from the cover body toward the power conversion device body.

3. The power conversion device according to claim 2, wherein: The protrusion and the cover body are formed integrally.

4. The power conversion device according to claim 2, wherein: In a cross section taken along the extending direction of the cover main body, a cross-sectional area of ​​the protruding portion on the power conversion device main body side is smaller than a cross-sectional area of ​​the protruding portion on the cover main body side.

5. The power conversion device according to claim 2, wherein: The protrusion is configured to cushion an external impact by plastic deformation.

6. The power conversion device according to claim 1, wherein: The buffer portion is provided in plurality on the cover body portion at predetermined intervals from each other.

7. The power conversion device according to claim 1, wherein: The cover body is formed by a plate-like member. The buffer portion is disposed near a corner of the plate-shaped member.

8. The power conversion device according to claim 7, wherein: The buffer portion is disposed near the center of the plate-shaped member in addition to being disposed near the corners of the plate-shaped member.

9. The power conversion device according to claim 1, wherein: The device body mounting portion has a fitting portion that is fitted into the vent by elastic deformation.

10. The power conversion device according to claim 1, wherein: The cover body is formed by a plate-like member. The device body mounting parts are provided in plurality and are arranged on the plate-shaped member at predetermined intervals.

11. The power conversion device according to claim 1, wherein: The vents are respectively arranged on the upper surface and two side surfaces of the power conversion device body. The cover component includes: an upper surface cover component, which covers the vent set on the upper surface of the power conversion device body; a right side cover component, which covers the vent set on the right side of the power conversion device body; and a left side cover component, which covers the vent set on the left side of the power conversion device body, and the upper surface cover component, the left side cover component and the right side cover component are each independently set.

12. The power conversion device according to claim 11, wherein: The upper cover member is formed in an L-shape and covers a part of the right cover member or a part of the left cover member.

13. The power conversion device according to claim 1, wherein: The cover body is made of resin and has a groove for suppressing warping.

14. The power conversion device according to claim 1, wherein: The power conversion device body can accommodate the power conversion module and includes a first case portion having the vent and a second case portion connected to the first case portion. The cover member including the buffer portion is attached to the power conversion device body so as to cover a connection portion between the first case portion and the second case portion.

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