Patent Publication Number: US-2022225520-A1

Title: Cabinet and power converter

Description:
TECHNICAL FIELD 
     An embodiment of the present invention relates to a cabinet and a power converter. 
     BACKGROUND ART 
     In a cabinet which accommodates an electric device or the like, a configuration is known, which has a door rotatably attached to one side portion of a housing by a hinge (Patent Document 1 (Japanese Unexamined Patent Application, First Publication No. 2006-183278)). 
     In the cabinet, the door is supported in a cantilever manner, and thus a free end side of the door may be inclined to hang downward. 
     SUMMARY OF INVENTION 
     Technical Problem 
     An object to be solved by the present invention is to provide a cabinet and a power converter capable of easily adjusting an inclination angle of a door. 
     Solution to Problem 
     According to an aspect of the present invention, there is provided a cabinet including a housing, a door, a support member, and a rotation mechanism. The housing has an opening on one side surface. The door is rotatably supported around a first axis along the one side surface and is openable or closable to cover at least a portion of the opening. The support member is interposed between the housing and the door to support the door in the housing. The rotation mechanism rotates the door with respect to the housing around a second axis along a direction orthogonal to a plane direction of the opening. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is an external view of a power converter of an embodiment. 
         FIG. 2  is an external view of a housing of the embodiment. 
         FIG. 3  is an enlarged view of a portion III of  FIG. 2 . 
         FIG. 4  is an enlarged view of a portion IV of  FIG. 3 . 
         FIG. 5  is an enlarged view of a portion V of  FIG. 2 . 
         FIG. 6  is an enlarged view of a portion VI of  FIG. 1 . 
         FIG. 7  is an exploded view of a cover member. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     Hereinafter, a power converter  10  and a cabinet  1  of an embodiment will be described with reference to the drawings. The power converter  10  supplies desired AC power to an AC electric motor (motor), which is an example of a load. 
     A configuration example of the power converter  10  is shown in  FIG. 1 .  FIG. 1  is an external view of the power converter  10  of the embodiment. 
     The power converter  10  shown in  FIG. 1  includes a cabinet  1  and an electric device  8  accommodated in the cabinet  1 . For example, the electric device  8  includes a converter, an inverter, a controller for controlling these, a capacitor, or the like (all not shown). The converter and the inverter are included in a main circuit of the power converter  10 . For example, multi-phase AC power (three-phase AC power) is supplied to the power converter  10 . 
     The cabinet  1  is formed in a substantially box shape. The cabinet  1  is installed on a floor surface F. 
     Here, an UP axis is defined in a vertical direction with respect to the floor surface F, an FR axis is defined in a depth direction of the cabinet  1 , and an LH axis is defined in a width direction of the cabinet  1 . The UP axis, FR axis, and LH axis are orthogonal to each other. Hereinafter, a case where a height direction of the cabinets  1  is aligned along the vertical direction will be described. In this case, the vertical direction may be referred to as an “up-down direction”. A direction toward + (positive) in the FR axis may be referred to as a front surface side, and a direction toward − (negative) in the FR axis may be referred to as a back surface side. A direction toward + (positive) in the LH axis may be referred to as a left side, and a direction toward − (negative) in the LH axis may be referred to as a right side. 
     As shown in  FIG. 1 , the cabinet  1  formed in a substantially box shape has a lower surface  11 , an upper surface  12 , a right surface  13 , a left surface  14 , a back surface  15 , and a front surface  16 . The lower surface  11  is a surface in contact with the floor surface F of a base  17 . The upper surface  12  is an upper surface of a top plate  18  provided apart from the lower surface  11  upward. The right surface  13 , the left surface  14 , the back surface  15 , and the front surface  16  are side surfaces of the cabinet  1 . The right surface  13  and the left surface  14  are provided so as to face each other, and the left surface  14  is located on a left side of the cabinet  1 . The back surface  15  and the front surface  16  are provided so as to face each other, and the front surface  16  is located on a front side of the cabinet  1 . 
     For example, the cabinet  1  includes a housing  2 , a door  3 , a support member  4  (refer to  FIG. 2 ), a rotation mechanism  5  (refer to  FIG. 2 ), and a cover member  6 . 
     First, the housing  2  will be described. 
       FIG. 2  is an external view of the housing  2  of the embodiment. In  FIG. 2 , for the sake of description, illustration of the electric device  8 , some of the plurality of panels  20  described later, or the like is omitted. 
     The housing  2  shown in  FIG. 2  includes the base  17 , a frame  21 , and the top plate  18 . 
     The base  17  is formed in a rectangular plate shape with the up-down direction as a thickness direction. A plurality of the frames  21  are provided so as to stand up vertically at end portions including four corner portions of the base  17  disposed substantially horizontally. The plurality of frames  21  are connected to each other by a connecting member to form a frame structure. A top plate  18  is provided above the plurality of frames  21 , and the plurality of frames  21  support the top plate  18 . 
     For example, the panel  20  is not provided on a front surface (front surface  16 ) of the housing  2 , but the panel  20  is provided on each of a right surface (right surface  13 ), a left surface (left surface  14 ), and a back surface (back surface  15 ) of the housing  2 . 
     As described above, the housing  2  is formed in a box shape having an opening  22  on the front surface (one side surface of claims) of the housing  2 . The panels  20  is provided in each of the right surface  13 , the left surface  14 , and the back surface  15 . Inside and outside of the housing  2  are partitioned by the panels  20 . The opening  22  provided on the front surface (front surface  16 ) of the housing  2  enables communication between the inside and outside of the housing  2 . 
     Next, the door  3  will be described. 
     The door  3  is provided at a position corresponding to the front surface  16  of the cabinet  1 . For example, the door  3  has a first door  35  and a second door  36 . The first door  35  and the second door  36  can be opened or closed independently, and when used in pairs, they become doors of the double door type cabinet  1 . For example, the first door  35  is provided on the left surface  14  side of the front surface  16 . The second door  36  is provided on the right surface  13  side of the front surface  16 . The cabinet  1  is an example of a double door type cabinet. However, the cabinet  1  is not limited to this and may be a single-sided type cabinet. Hereinafter, the first door  35  will be described in detail as an example. The first door  35  and the second door  36  may be collectively referred to as the door  3 , or the first door  35  may be simply referred to as the door  3 . 
     For example, the door  3  (first door  35 ) is rotatably supported around a first axis C 1  along a front end portion of the left surface  14 . The first axis C 1  serves as an axis of the rotating door  3 . The first axis C 1  is provided along the up-down direction. 
     The door  3  includes a door body  31  and a hinge receiver  32  (refer to  FIG. 3 ). 
     The door body  31  is formed in a shape of a plate having desired rigidity and thickness, and a peripheral portion thereof is bent. The shape of the door body  31  viewed from a front is a rectangular shape that is long in the up-down direction. The door body  31  may include a vent or the like for ventilation. 
     The hinge receiver  32  will be described with reference to  FIG. 3 . 
       FIG. 3  is an enlarged view of a portion III of  FIG. 2 . In  FIG. 3 , a portion of the door  3  is represented by a virtual line for description. 
     For example, the hinge receiver  32  is formed in a tubular shape centered on the first axis C 1 . The hinge receiver  32  receives a hinge pin  47  of the hinge  42  described later, and rotates around the first axis C 1  with respect to the hinge pin  47 . 
     For example, the hinge receiver  32  is attached to a back surface of the door body  31 . The back surface is a surface facing inward of the cabinet  1  in a state where the door  3  is closed. For example, the hinge receiver  32  is fixed to the door body  31  by welding or the like. 
     Next, the support member  4  that supports the door  3  on the housing  2  will be described. 
     As shown in  FIGS. 2 and 3 , the support member  4  is interposed between the housing  2  and the door  3 , and supports the door  3  on the housing  2 . The support member  4  is provided on a frame  24  located at a boundary portion between the front surface  16  and the left surface  14  of the housing  2 . For example, the support member  4  has a substrate portion  41  and the hinge  42 . 
     The hinge  42  has a hinge body  46  and the hinge pin  47 . 
     The hinge body  46  is formed in a tubular shape centered on the first axis C 1 . This is referred to as a tubular portion. The hinge body  46  receives the hinge pin  47  in the tubular portion. 
     The hinge pin  47  is inserted into an inner peripheral portion of the hinge body  46  from above. A portion of the hinge pin  47  protrudes upward from an upper end of the tubular portion of the hinge body  46 . The hinge pin  47  that protrudes upward from the hinge body  46  is inserted into the hinge receiver  32  provided on the door  3 . Accordingly, the door body  31  rotates around a hinge pin  47  (around the first axis C 1 ) between a state (closed state) closed to cover the opening  22  and a state (open state) open toward the outside of the housing  2  with respect to the closed state. Assuming that the first axis C 1  side of the door body  31  is a fixed end, a handle  33  and a keyhole  34  for operating the door are provided on a free end side. 
     Next, the substrate portion  41  on which the hinge  42  is disposed will be described. 
     The substrate portion  41  has a predetermined length in an extension direction. One hinge or the plurality of hinges  42  disposed on the substrate portion  41  at predetermined positions in the extension direction. The substrate portion  41  locks one or the plurality of hinges  42  disposed to the housing  2 . 
     The extension direction of the substrate portion  41  is disposed along substantially the up-down direction, and the substrate portion  41  is attached to a front surface portion  23  of the frame  21  of the housing  2 . For example, as shown in  FIG. 2 , the substrate portion  41  includes four hinges  42 , two fixing portions  43 , and the rotation mechanism  5 . 
     For example, the hinge  42  is provided on a central portion side in a longitudinal direction from the fixing portion  43  in the up-down direction. Two hinges (four in total)  42  are provided vertically with the rotation mechanism  5  (refer to  FIG. 2 ) interposed therebetween. 
     For example, the first axis C 1  is defined so as to follow the extension direction of the substrate portion  41 . The substrate portion  41  has a surface in which at least a portion to be attached to the frame  21  is formed in a plate shape, and the surface is disposed on the frame  24 . The substrate portion  41  has three surfaces formed by bending a sheet metal twice in the extension direction of the substrate portion  41 . The substrate portion  41  is formed in an L-shaped cross section in a cross-sectional view orthogonal to a longitudinal direction (up-down direction) of the substrate portion  41 . More specifically, the substrate portion  41  has a first portion  26 , a second portion  27 , and a third portion  28 . 
     The first portion  26  and the second portion  27  are substantially orthogonal to each other. The second portion  27  and the third portion  28  are substantially orthogonal to each other. A rear end portion of the second portion  27  is connected to an inner end portion of the first portion  26  in a right-left direction of the housing  2 . A first end portion of the third portion  28  is connected to a front end portion of the second portion  27 . A second end portion of the third portion  28  is directed outward in the right-left direction of the housing  2 . Each hinge body  46  is attached to the second portion  27 . A width dimension of the third portion  28  along the right-left direction is narrower than a width dimension of the first portion  26  along the right-left direction. The substrate portion  41  is rotatably supported by the frame  21  of the housing  2  around a second axis C 2  (refer to  FIG. 2 ) of the rotation mechanism  5  described later. 
       FIG. 4  is an enlarged view of a portion IV of  FIG. 3 . 
     As shown in  FIG. 4 , the substrate portion  41  is fixed by the fixing portion  43 . The fixing portion  43  is provided in the first portion  26  of the substrate portion  41 . The fixing portion  43  locks the substrate portion  41  to the frame  21  of the housing  2 . For example, the fixing portion  43  is provided in each of an upper end portion and a lower end portion of the substrate portion  41 . The configurations of the fixing portions  43  provided in the upper end portion and the lower end portion of the substrate portion  41  are the same. 
     The fixing portion  43  allows the substrate portion  41  to rotate by the rotation mechanism  5  described later in a state where the substrate portion  41  is locked to the housing  2 . For example, the fixing portion  43  includes the substrate portion  41  in which an elongated hole  45  is formed, a fastening receiving portion  25  of the frame  24 , and a fastening member  49 . 
     The elongated hole  45  penetrates the first portion  26  of the substrate portion  41  along a plate thickness direction (front-rear direction) thereof. The elongated hole  45  has a major axis along a direction (right-left direction) orthogonal to the extension direction of the substrate portion  41 . Specifically, the elongated hole  45  is formed along an arc shape which is centered on a central portion in the longitudinal direction of the substrate portion  41  and has a length between the central portion in the longitudinal direction and the elongated hole  45  as a radius when viewed from the front. In the present embodiment, a position of the central portion in the longitudinal direction of the substrate portion  41  coincides with a position of the second axis C 2  (refer to  FIG. 2 ) of the rotation mechanism  5  described later. That is, the elongated hole  45  extends along a rotation direction of the substrate portion  41  centered on the second axis C 2 . 
     The fastening receiving portion  25  is provided at a position corresponding to the elongated hole  45 . The fastening member  49  is inserted into the elongated hole  45  and fastened to the fastening receiving portion  25 . The substrate portion  41  is fixed to the frame  21  by fastening the fastening member  49  to the fastening receiving portion  25  in a state where the fastening member  49  is inserted into the elongated hole  45 . 
     Next, the rotation mechanism  5  will be described. 
     As shown in  FIG. 2 , the rotation mechanism  5  is provided so as to relate to the second axis C 2  located at the central portion in the longitudinal direction of the substrate portion  41 . The rotation mechanism  5  rotates the door  3  with respect to the housing  2  around the second axis C 2  along the direction orthogonal to a plane direction of the opening  22 . 
       FIG. 5  is an enlarged view of a V portion of  FIG. 2 . 
     The rotation mechanism  5  includes a attachment plate  50 , a sun gear  51 , and a planetary gear  52 . 
     The attachment plate  50  is formed in a shape of a rectangular plate long in the up-down direction in a plan view viewed from the front. The attachment plate  50  is mounted on a front-facing surface of the first portion  26  (refer to  FIG. 3 ) of the substrate portion  41 . The attachment plate  50  is fastened to the substrate portion  41  by two bolts  55  provided vertically apart from each other. A circular through hole  56  is formed between the two bolts  55  of the attachment plate  50 . Internal teeth  53  are formed on a peripheral edge portion of the through hole  56 . That is, the attachment plate  50  has the internal teeth  53 . The internal teeth  53  are provided coaxially with the second axis C 2 . The internal teeth  53  are provided in either the housing  2  or the door  3 . In the present embodiment, the internal teeth  53  are provided in the door  3  via the support member  4  as described above. 
     The sun gear  51  is disposed inside the through hole  56 . The sun gear  51  is disposed inside the internal teeth  53 . The sun gear  51  is provided coaxially with the second axis C 2 . The sun gear  51  is provided on either the housing  2  or the door  3 . In the present embodiment, the sun gear  51  is provided in the housing  2 . Specifically, a rotating shaft of the sun gear  51  penetrates the support member  4  and is fixed to the frame  21  of the housing  2 . A jig receiving port  57  is provided in a front-side (side opposite to the housing  2 ) end portion of the sun gear  51 . For example, the jig receiving port  57  is a recessed portion into which a tool  19  such as a hexagon wrench can be inserted. By inserting the tool  19  into the jig receiving port  57  and turning the tool  19 , the sun gear  51  rotates around the second axis C 2  with respect to the rotating shaft fixed to the housing  2 . 
     The planetary gear  52  is provided between the sun gear  51  and the internal teeth  53  of the attachment plate  50 . In the present embodiment, three planetary gears  52  are provided at equal intervals on an outer peripheral portion of the sun gear  51 . Each of the planetary gear  52  meshes with the sun gear  51  and the internal teeth  53  of the attachment plate  50 . A rotating shaft of each planetary gear  52  penetrates the support member  4  and is fixed to the frame  21  of the housing  2 . That is, a position of the rotating shaft of the planetary gear  52  in the circumferential direction of the sun gear  51  is fixed. The planetary gear  52  cannot revolve around the sun gear  51 . The planetary gear  52  can rotate around the rotating shaft of the planetary gear  52 . 
     Next, the cover member  6  will be described. 
       FIG. 6  is an enlarged view of a VI portion of  FIG. 1 .  FIG. 7  is an exploded view of the cover member  6 .  FIG. 7  shows a state in which the cover member  6  is removed from the door  3 . 
     As shown in  FIGS. 1 and 6 , the cover member  6  is attached to an end portion of the door body  31  on the first axis C 1  side. The cover member  6  is provided so as to cover at least the rotation mechanism  5  (refer to  FIG. 2 ) from an outside of the cabinet  1 . In the present embodiment, the cover member  6  is provided so as to cover the support member  4  from the outside of the cabinet  1 . The cover member  6  is attached to the door  3  to limit the operation of the rotation mechanism  5 . A length dimension of the cover member  6  along the up-down direction may be the same as a height dimension of the door body  31  along the up-down direction. 
     As shown in  FIGS. 6 and 7 , for example, the cover member  6  includes a front wall portion  61  that covers the front surface of the door body  31  and a side wall portion  62  that covers the side surface of the door body  31 , and has an L-shaped cross section. The front wall portion  61  is attached to the door body  31  via an attachment screw  63 . A plurality of the attachment screws  63  are provided along the up-down direction. The cover member  6  is detachably attached to the door body  31 . 
     Next, a procedure for rotating the door  3  around the second axis C 2  using the above-mentioned rotation mechanism  5  will be described in comparison with a comparative example. 
     In the case of the comparative example, a door supported in a cantilever manner may be inclined so that a free end side of the door hangs downward due to its own weight when used for many years. In this case, in the comparative example, it may be difficult to adjust an angle of the door. 
     On the other hand, the rotation mechanism  5  of the present embodiment makes it possible to adjust an inclination of the door  3  by rotating the door  3  around the second axis C 2  in a state where the door  3  is attached. 
     As shown in  FIG. 7 , in an angle adjustment using the rotation mechanism  5 , first, a user releases fastening of the attachment screw  63  and removes the cover member  6  from the door body  31 . As shown in  FIG. 5 , when the cover member  6  is removed, the rotation mechanism  5  is exposed. As a result, the rotation mechanism  5  can be operated. 
     Next, as shown in  FIG. 4 , by loosening the fastening member  49  fixing the support member  4  to the housing  2 , the support member  4  can rotate around the second axis C 2 . 
     Next, the user inserts the tool  19  into the jig receiving port  57  in the rotation mechanism  5 . When the user rotates the tool  19  in this state, the sun gear  51  rotates its own axis. Further, the plurality of planetary gears  52  that mesh with the sun gear  51  rotate on their own axes. When the planetary gears  52  rotate on their own axes, the attachment plate  50  having internal teeth  53  that mesh with the planetary gears  52  rotates around the second axis C 2  with respect to the housing  2 . In this case, a rotation direction of the sun gear  51  and a rotation direction of the attachment plate  50  are opposite to each other. As a result, the support member  4  and the door  3  rotate around the second axis C 2  with respect to the housing  2  in an integrated state. 
     The user adjusts the inclinations of the support member  4  and the door  3  by adjusting an amount of rotation of the sun gear  51  so that the inclination of the door  3  is reduced. In response to this, the rotation mechanism  5  is operated by the user, and thus rotates the door  3  around the second axis C 2  with respect to the housing  2 . In this case, as the support member  4  rotates, the position of the elongated hole  45  in the longitudinal direction moves with respect to the position of the fastening member  49  that connects the housing  2  and the support member  4 . 
     After the support member  4  and the door  3  have a predetermined angle with respect to the housing, the user fastens the fastening member  49  connecting the housing  2  and the support member  4  while maintaining the predetermined angle. Finally, the cover member  6  is attached to the door body  31  again. Therefore, an angle adjustment of the door  3  is completed. 
     According to the present embodiment, the cabinet  1  includes the rotation mechanism  5  having a second axis C 2  along the direction orthogonal to the plane direction of the opening  22 , as a rotation center. The rotation mechanism  5  rotates the door  3  around the second axis C 2  with respect to the housing  2 . Accordingly, when the free end side of the door  3  supported in a cantilever manner is inclined so as to hang downward, the inclination of the door  3  can be corrected by rotating the door  3  around the second axis C 2 . Therefore, it is possible to suppress generation of a gap due to the inclination of the door  3  or intrusion of dust into the cabinet  1  through the gap. By providing the rotation mechanism  5  having the second axis C 2  as the rotation center, an angle of the door  3  can be adjusted without removing the door  3  from the housing  2 . Therefore, a work related to the angle adjustment can be facilitated, and the angle of the door  3  can be adjusted accurately. 
     Therefore, it is possible to provide the cabinet  1  in which the inclination angle of the door  3  can be easily adjusted. 
     Moreover, the power converter  10  also has the same effect as that of the cabinet  1 . 
     In the comparative example, when the door  3  is inclined, the positions of a key receiving portion (not shown) on the housing  2  side and the keyhole  34  on the door  3  side may be displaced. Accordingly, it is difficult to insert the key in the comparative example that does not have a rotation mechanism. 
     On the other hand, according to the cabinet  1  of the present embodiment, since the inclination of the door  3  can be corrected by using the rotation mechanism  5 , misalignment between the key receiving portion and the keyhole  34  can be reduced. Therefore, it is possible to suppress an operation failure when inserting the key into the keyhole  34  and further enhance a convenience of the cabinet  1 . 
     The support member  4  includes the substrate portion  41  having the fixing portion  43  and the hinge  42 . The fixing portion  43  allows the rotation mechanism  5  to rotate the substrate portion  41  in the state where the substrate portion  41  is locked to the housing  2 . Accordingly, the support member  4  can be rotated around the second axis C 2  with respect to the housing  2 . The door  3  is supported by the support member  4  in an openable or closable manner via the hinge  42 . Therefore, when the support member  4  rotates around the second axis C 2 , the door  3  rotates around the second axis C 2  together with the support member  4 . Since the door  3  and the housing  2  are connected to each other via the support member  4 , the angle of the door  3  can be adjusted without removing the door  3  from the housing  2 . Further, by providing the rotation mechanism  5  not in the door  3  but in the support member  4 , the angle can be easily adjusted without complicating the configuration of the door  3 . 
     The substrate portion  41  is formed in a plate shape. An elongated hole  45  through which the fastening member  49  connecting the housing  2  and the support member  4  to each other is inserted and which is formed along a rotation direction of the door  3  around the second axis C 2  is formed in a surface of the substrate portion  41 . As a result, when the support member  4  is rotated, the rotation of the support member  4  with respect to the housing  2  is allowed, and thus a relative position of the fastening member  49  with respect to the elongated hole  45  can be changed. Therefore, the angle of the support member  4  can be adjusted in a state where the fastening member  49  is inserted, that is, in a state where the support member  4  is attached to the housing  2 . 
     The rotation mechanism  5  may be provided at the central portion of the substrate portion  41  in the longitudinal direction. Accordingly, the door  3  can be rotated around the second axis C 2  with the central portion of the substrate portion  41  in the longitudinal direction, that is, the central portion of the door  3  in the up-down direction as the rotation center. Therefore, when the angle of the door  3  is adjusted, an amount of displacement between the door  3  and the housing  2  can be kept small. Accordingly, an appearance quality of the door  3  after adjusting the angle can be improved. 
     The rotation mechanism  5  has a jig receiving port  57  and is operated by a person, and thus, the door  3  is rotated around the second axis C 2  with respect to the housing  2 . The user can rotate the door  3  to a desired angle by inserting the jig into the jig receiving port  57  and rotating the jig. Since the angle of the door  3  is adjusted according to the amount of rotation of the jig, the user can adjust the angle of the door  3  with high accuracy by operating the jig while observing a state of the door  3 . 
     The rotation mechanism  5  may include a planetary gear mechanism having the sun gear  51 , planetary gear  52 , and internal teeth  53 . Thereby, the angle of the door  3  can be easily adjusted using the rotation mechanism  5  having a simpler structure. Further, by using any of the gears of the rotation mechanism  5 , a rotational force based on the operation of the user can be efficiently converted into a rotational force of the door  3 . 
     The cabinet  1  may include the cover member  6  that covers the rotation mechanism  5 . As a result, it is possible to prevent the rotation mechanism  5  from being exposed to the outside during normal use without adjusting the angle of the door  3 . Therefore, it is possible to suppress an unintended external force from being input to the rotation mechanism  5  and prevent the door  3  from unexpectedly rotating around the second axis C 2 . The cover member  6  is detachable from the door  3 . Therefore, when adjusting the angle of the door  3 , the rotation mechanism  5  can be easily accessed by removing the cover member  6 . Therefore, usability of the cabinet  1  can be improved during normal use and when adjusting the angle of the door  3 . 
     The power converter  10  may include the above-mentioned cabinet  1  and the electric device  8  accommodated in the cabinet  1 . Here, in the power converter  10  in which the high-voltage electric device  8  or the like is accommodated, if dust, foreign matters, or the like enters the cabinet  1 , the internal electric device  8  may be affected. Therefore, it is necessary to suppress the gap between the housing  2  and the door  3 . According to the power converter  10 , since the power converter  10  includes the above-mentioned cabinet  1 , the angle of the door  3  can be adjusted using the rotation mechanism  5  when the door  3  is inclined. As a result, it is possible to suppress the generation of the gap between the door  3  and the housing  2  due to the inclination of the door  3 . Therefore, it can be suitably used in the power converter  10  which is particularly required to be hermetically sealed. 
     According to at least one embodiment described above, the housing  2  has the opening  22  on one side surface (front surface  16 ). The door  3  is rotatably supported around the first axis C 1  along one side surface, and can be opened or closed so as to cover at least a part of the opening  22 . The support member  4  is interposed between the housing  2  and the door  3 , and supports the door  3  in the housing  2 . The rotation mechanism  5  can easily adjust the inclination angle of the door  3  by rotating the door  3  with respect to the housing  2  around the second axis C 2  along the direction orthogonal to the plane direction of the opening  22 . 
     Although some embodiments of the present invention are described, these embodiments are presented as examples and are not intended to limit a scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made within a scope which does not depart from a gist of the invention. These embodiments or modifications thereof are included in the scope or gist of the invention, as well as in the scope of the invention described in the claims and the equivalent scope thereof. 
     For example, in the above description of the embodiment, the configuration in which the internal teeth  53  are provided in the door  3  via the support member  4  and the sun gear  51  is provided in the housing  2  is described. However, the present invention is not limited to this. The sun gear  51  may be provided in the door  3 , and the internal teeth  53  may be provided in the housing  2 . 
     In the above description of the embodiment, the configuration having the two doors  3  of the first door  35  and the second door  36  is described. However, the number of the doors  3  is not limited to the above-mentioned embodiment. The cabinet  1  may be configured to have one door  3 . When a plurality of doors  3  are provided, each door  3  may include the rotation mechanism  5 . 
     The cover member  6  may be provided in a portion of the door  3  in the up-down direction. A shape of the cover member  6  or a method of attaching the cover member  6  to the door  3  is not limited to the above-mentioned embodiment. That is, the cover member  6  may cover at least the rotation mechanism  5 , and may be detachably attached to the door  3  by, for example, snap fitting that does not use a screw. 
     REFERENCE SIGNS LIST 
     
         
         
           
               1 : Cabinet 
               2 : Housing 
               3 : Door 
               4 : Support member 
               5 : Rotation mechanism 
               6 : Cover member 
               8 : Electric device 
               10 : Power converter 
               16 : Front surface (one side surface) 
               22 : Opening 
               41 : Substrate portion 
               42 : Hinge 
               43 : Fixing portion 
               45 : Elongated hole 
               49 : Fastening member 
               51 : Sun gear 
               52 : Planetary gear 
               53 : Internal teeth 
               57 : Jig receiving port 
             C 1 : First axis 
             C 2 : Second axis