Power distribution cabinet and power conversion device

Abstract

The power conversion device of the embodiment has a distribution cabinet and electrical equipment stored in the distribution cabinet. The distribution cabinet has a frame, a door, a support member and a rotating mechanism. The door is supported in a manner that can rotate relative to the frame around a first axis. The support member is sandwiched between the frame and the door, and supports the door to the frame. The rotating mechanism rotates the door relative to the frame around a second axis along a direction orthogonal to the surface direction of the opening of the frame.

Description

Technical Field

[0001] Embodiments of the present invention relate to a power distribution cabinet and a power conversion device. Background Art

[0002] A switchboard for storing electrical equipment and the like is known that has a door pivotally mounted on one side of a housing by means of a hinge (Patent Document 1 (Japanese Patent Application Laid-Open No. 2006-183278)).

[0003] In these switchboards, since the door is supported by the cantilever, the free end side of the door may be inclined so as to hang downward. Summary of the invention

[0004] Problems to be solved by the invention

[0005] The problem to be solved by the present invention is to provide a switchboard and a power conversion device, which can easily adjust the inclination angle of the door.

[0006] Means for solving problems

[0007] A power distribution cabinet according to one embodiment of the present invention comprises a frame, a door, a support member and a rotating mechanism. The frame has an opening on one side. The door is supported in a manner that allows it to rotate around a first axis along the one side, and can be opened and closed in a manner that covers at least a portion of the opening. The support member is sandwiched between the frame and the door, and supports the door on the frame. The rotating mechanism rotates the door relative to the frame around a second axis along a direction orthogonal to the surface direction of the opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is an external view of the power conversion device according to the embodiment.

[0009] Figure 2 It is an external view of a housing according to the embodiment.

[0010] Figure 3 yes Figure 2 Enlarged view of Part III.

[0011] Figure 4 yes Figure 3 Enlarged view of part IV.

[0012] Figure 5 yes Figure 2 Enlarged view of the V section.

[0013] Figure 6 yes Figure 1 Enlarged view of part VI.

[0014] Figure 7 This is an exploded view of the cover components. DETAILED DESCRIPTION

[0015] Hereinafter, the power conversion device 10 and the switchboard 1 according to the embodiment will be described with reference to the drawings. The power conversion device 10 supplies desired AC power to an AC electric motor (motor) as an example of a load.

[0016] Figure 1 A configuration example of the power conversion device 10 is shown. Figure 1 It is an external view of the power conversion device 10 according to the embodiment.

[0017] Figure 1 The power conversion device 10 shown has a distribution cabinet 1 and an electrical device 8 housed in the distribution cabinet 1. The electrical device 8 includes, for example, a converter, an inverter, a control unit for controlling the converter and the inverter, a capacitor, etc. (none of which is shown). The converter and the inverter are included in the main circuit of the power conversion device 10. For example, multi-phase AC power (three-phase AC power) is supplied to the power conversion device 10.

[0018] The switchboard 1 is formed in a substantially box shape.

[0019] Here, with the bottom surface F as a reference, the UP axis is defined along the vertical direction, the FR axis is defined along the depth direction of the distribution cabinet 1, and the LH axis is defined along the width direction of the distribution cabinet 1. The UP axis, the FR axis, and the LH axis are orthogonal to each other. Below, the case where the height direction of the distribution cabinet 1 is consistent along the vertical direction is described. In this case, the vertical direction is sometimes referred to as the "up and down direction". Sometimes the direction of the FR axis toward the + (positive) side is called the front side, and the direction toward the - (negative) side is called the back side. Sometimes the direction of the LH axis toward the + (positive) side is called the left side, and the direction toward the - (negative) side is called the right side.

[0020] like Figure 1 The distribution cabinet 1 shown in the figure is formed in a roughly box shape and has a lower surface 11, an upper surface 12, a right side 13, a left side 14, a back 15 and a front 16. The lower surface 11 refers to the surface in contact with the bottom surface F of the base 17. The upper surface 12 refers to the surface above the top plate 18 arranged upward away from the lower surface 11. The right side 13, the left side 14, the back 15 and the front 16 are the side surfaces of the distribution cabinet 1. The right side 13 and the left side 14 are arranged opposite to each other, and the left side 14 is located on the left side of the distribution cabinet 1. The back 15 and the front 16 are arranged opposite to each other, and the front 16 is located on the front side of the distribution cabinet 1.

[0021] The switch cabinet 1 includes, for example, a frame 2, a door 3, and a support member 4 (see Figure 2 )、rotating mechanism 5 (refer to Figure 2 ) and cover part 6.

[0022] First, the frame body 2 will be described.

[0023] Figure 2 2 is an external view of the frame 2 according to the embodiment. Figure 2 In the figure, for convenience of explanation, illustration of the electric device 8 and part of a plurality of panels 20 described later are omitted.

[0024] Figure 2 The frame body 2 shown has a base 17 , a frame 21 and a top plate 18 .

[0025] The base 17 is formed in a rectangular plate shape with the thickness direction being the up-down direction. A plurality of frames 21 are provided vertically at four ends including corners of the base 17 arranged substantially horizontally. The plurality of frames 21 are connected to each other by joint members to form a frame structure. A top plate 18 is provided on the top of the plurality of frames 21, and the plurality of frames 21 support the top plate 18.

[0026] For example, the panel 20 is not provided on the front side (front side 16 ) of the housing 2 , but is provided on the right side (right side 13 ), the left side (left side 14 ), and the back side (back side 15 ) of the housing 2 .

[0027] As described above, the frame 2 is formed into a box shape having an opening 22 on the front side (one side in the claims) of the frame 2. Panels 20 are provided on the right side 13, the left side 14, and the back side 15, respectively. The inside and outside of the frame 2 are separated by the panel 20. Through the opening 22 provided on the front side (front side 16) of the frame 2, the inside and outside of the frame 2 can be communicated.

[0028] Next, the door 3 will be described.

[0029] The door 3 is arranged at a position of the distribution cabinet 1 corresponding to the front face 16. The door 3 has, for example, a first door 35 and a second door 36. The first door 35 and the second door 36 can be opened and closed independently, and by using a pair of doors, the distribution cabinet 1 is formed as a double-opening door. For example, the first door 35 is arranged on the left side 14 of the front face 16. The second door 36 is arranged on the right side 13 of the front face 16. In addition, the distribution cabinet 1 is an example of a double-opening type, but is not limited to this, and can also be a single-opening type. Below, the first door 35 is described in detail by taking an example. Sometimes the first door 35 and the second door 36 are collectively referred to as the door 3, or sometimes the first door 35 alone is referred to as the door 3.

[0030] For example, the door 3 (first door 35) is supported so as to be rotatable about a first axis C1 along the front end portion of the left side surface 14. The first axis C1 serves as an axis of the rotating door 3. The door 3 is provided along the up-down direction.

[0031] The door 3 has a door body 31 and a hinge seat 32 (see Figure 3 ).

[0032] The door body 31 is formed into a plate-like shape with a desired rigid thickness, and the surrounding part is bent. The shape of the door body 31 observed from the front is a rectangular shape that is long in the vertical direction. In addition, the door body 31 can also be provided with a ventilating port for ventilation.

[0033] Reference Figure 3 The hinge base 32 will be described.

[0034] Figure 3 yes Figure 2 A magnified view of part III. Figure 3 In FIG. 1 , for convenience of explanation, a portion of the door 3 is indicated by an imaginary line.

[0035] The hinge base 32 is formed in a cylindrical shape centered on the first axis C1, for example. The hinge base 32 receives a hinge pin 47 of a hinge 42 described later and rotates about the first axis C1 relative to the hinge pin 47.

[0036] For example, the hinge base 32 is mounted on the back side of the door body 31. The back side refers to a surface facing the inside of the switchboard 1 when the door 3 is closed. The hinge base 32 is fixed to the door body 31 by welding or the like, for example.

[0037] Next, the support member 4 that supports the door 3 on the frame 2 will be described.

[0038] like Figure 2 and Figure 3 As shown, the support member 4 is sandwiched between the frame 2 and the door 3 to support the door 3 on the frame 2. The support member 4 is provided on a frame 24 located at a boundary between the front surface 16 and the left side surface 14 of the frame 2. The support member 4 has a base plate 41 and a hinge 42, for example.

[0039] The hinge 42 has a hinge body 46 and a hinge pin 47 .

[0040] The hinge body 46 is formed in a cylindrical shape centered on the first axis C1. This is referred to as a cylindrical portion. The hinge body 46 supports the hinge pin 47 at the cylindrical portion.

[0041] The hinge pin 47 is inserted into the inner peripheral portion of the hinge body 46 from above. A portion of the hinge pin 47 protrudes upward further than the upper end of the cylindrical portion of the hinge body 46. The hinge pin 47 protruding upward further than the hinge body 46 is inserted into the hinge seat 32 provided on the door 3. Thus, the door body 31 rotates around the hinge pin 47 (around the first axis C1) between a state in which the door body 31 is closed in a manner covering the opening 22 (closed state) and a state in which the door body 31 is open toward the outside of the frame body 2 relative to the closed state (open state). If the first axis C1 side of the door body 31 is used as a fixed end, a handle 33 and a key hole 34 for operating the door are provided on the free end side.

[0042] Next, the base plate portion 41 on which the hinge 42 is arranged will be described.

[0043] The base plate portion 41 has a predetermined length in the extending direction. One or more hinges 42 are arranged at predetermined positions in the extending direction of the base plate portion 41. The base plate portion 41 locks the arranged one or more hinges 42 to the frame body 2.

[0044] The substrate portion 41 is configured to extend in a substantially vertical direction, and the substrate portion 41 is mounted on the front portion 23 of the frame 21 of the frame body 2. Figure 2 As shown, four hinges 42 , two fixing portions 43 and a rotating mechanism 5 are provided on the base plate portion 41 .

[0045] For example, the hinge 42 is provided on the longitudinal center side of the fixing portion 43 in the vertical direction. The hinge 42 sandwiches the rotating mechanism 5 (see Figure 2 ) are provided with two each at the top and the bottom (four in total).

[0046] For example, the first axis C1 is determined along the extension direction of the substrate portion 41. The substrate portion 41 has a surface formed in a plate shape at least in a portion mounted on the frame 21, and the surface is arranged on the frame 24. The substrate portion 41 has three surfaces formed by bending the sheet metal twice in the extension direction of the substrate portion 41. The substrate portion 41 is formed into an L-shaped cross section in a cross-sectional view orthogonal to the length direction (up and down direction) of the substrate portion 41. To be more specific, the substrate portion 41 has a first portion 26, a second portion 27, and a third portion 28.

[0047] 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. The end of the first portion 26 on the inner side in the left-right direction of the frame body 2 is connected to the rear end of the second portion 27. The front end of the second portion 27 is connected to the first end of the third portion 28. The second end of the third portion 28 faces the outer side in the left-right direction of the frame body 2. Each hinge body 46 is mounted on the second portion 27. The width dimension of the third portion 28 along the left-right direction is narrower than the width dimension of the first portion 26 along the left-right direction. The substrate portion 41 is supported so as to be able to rotate relative to the frame 21 of the frame body 2 around the second axis C2 (refer to Figure 2 ) to rotate.

[0048] Figure 4 yes Figure 3 Enlarged view of part IV.

[0049] like Figure 4As shown, the substrate portion 41 is fixed by a fixing portion 43. The fixing portion 43 is provided at the first portion 26 of the substrate portion 41. The fixing portion 43 locks the substrate portion 41 to the frame 21 of the frame body 2. For example, the fixing portion 43 is provided at the upper end and the lower end of the substrate portion 41. The structures of the fixing portions 43 provided at the upper end and the lower end of the substrate portion 41 are the same.

[0050] The fixing portion 43 allows the base plate 41 to rotate by the rotation mechanism 5 described later while locking the base plate 41 to the frame 2. The fixing portion 43 includes, for example, the base plate 41 having the long hole 45 formed therein, the fastening seat 25 of the frame 24, and a fastening member 49.

[0051] The long hole 45 penetrates the first portion 26 of the substrate portion 41 along the plate thickness direction (front-back direction). The long hole 45 has a long axis along the direction (left-right direction) perpendicular to the extension direction of the substrate portion 41. Specifically, when viewed from the front, the long hole 45 is formed along an arc shape with the center of the long side direction of the substrate portion 41 as the center and the radius from the center of the long side direction to the long hole 45. In the present embodiment, the position of the center of the long side direction of the substrate portion 41 coincides with the second axis C2 (refer to Figure 2 That is, the long hole 45 extends along the rotation direction of the base plate portion 41 centered on the second axis C2.

[0052] The fastening seat 25 is provided at a position corresponding to the long hole 45. The fastening member 49 is inserted into the long hole 45 and fastened to the fastening seat 25. When the fastening member 49 is inserted into the long hole 45, the substrate 41 is fixed to the frame 21 by fastening the fastening member 49 to the fastening seat 25.

[0053] Next, the rotating mechanism 5 will be described.

[0054] like Figure 2 As shown, the rotating mechanism 5 is provided so as to meet the second axis C2 located in the longitudinal center of the base plate 41. The rotating mechanism 5 rotates the door 3 relative to the frame 2 about the second axis C2 extending in a direction perpendicular to the surface direction of the opening 22.

[0055] Figure 5 yes Figure 2 Enlarged view of the V section.

[0056] The rotating mechanism 5 includes a mounting plate 50 , a sun gear 51 , and planetary gears 52 .

[0057] The mounting plate 50 is formed into a rectangular plate shape that is long in the vertical direction when viewed from the front. The mounting plate 50 is mounted on the first portion 26 of the base plate portion 41 (see Figure 3) is a surface facing forward. The mounting plate 50 is fastened to the base plate portion 41 by two bolts 55 spaced apart from each other in the upper and lower parts. A circular through hole 56 is formed between the two bolts 55 of the mounting plate 50. Internal teeth 53 are formed at the peripheral portion of the through hole 56. That is, the mounting plate 50 has internal teeth 53. The internal teeth 53 are coaxially arranged with the second axis C2. The internal teeth 53 are arranged in either the frame 2 or the door 3. In the present embodiment, the internal teeth 53 are arranged in the door 3 via the supporting member 4 as described above.

[0058] The sun gear 51 is arranged inside the through hole 56. The sun gear 51 is arranged on the inner side than the internal teeth 53. The sun gear 51 is arranged on the same axis as the second axis C2. The sun gear 51 is arranged on the other one of the frame 2 and the door 3. In the present embodiment, the sun gear 51 is arranged on the frame 2. Specifically, the rotating shaft of the sun gear 51 passes through the supporting part 4 and is fixed to the frame 21 of the frame 2. A receiving port 57 of a clamp is provided at the end on the front side (opposite side to the frame 2) of the sun gear 51. The receiving port 57 of the clamp is, for example, a recessed portion into which a tool 19 such as a hexagonal wrench can be inserted. By inserting the tool 19 into the receiving port 57 of the clamp and rotating it, the sun gear 51 rotates around the second axis C2 relative to the rotating shaft fixed to the frame 2.

[0059] The planetary gear 52 is disposed between the sun gear 51 and the internal teeth 53 of the mounting plate 50. In the present embodiment, three planetary gears 52 are disposed at equal intervals on the outer periphery of the sun gear 51. The planetary gears 52 mesh with the internal teeth 53 of the sun gear 51 and the mounting plate 50, respectively. The rotation axis of the planetary gear 52 passes through the supporting member 4 and is fixed to the frame 21 of the frame body 2. That is, the rotation axis of the planetary gear 52 is fixed in a circumferential position of the sun gear 51. The planetary gear 52 cannot revolve around the sun gear 51. The planetary gear 52 can rotate around the rotation axis of the planetary gear 52.

[0060] Next, the cover member 6 will be described.

[0061] Figure 6 yes Figure 1 Enlarged view of part VI. Figure 7 is an exploded view of the cover component 6. Figure 7 The state where the cover member 6 is removed from the door 3 is shown in the middle.

[0062] like Figure 1 and Figure 6 As shown, the cover member 6 is mounted on the end of the door body 31 on the first axis C1 side. The cover member 6 is provided to cover at least the rotating mechanism 5 from the outside of the switchboard 1 (see Figure 2). In this embodiment, the cover member 6 is provided to cover the support member 4 from the outside of the switchboard 1. By mounting the cover member 6 on the door 3, the operation of the rotating mechanism 5 is restricted. The length dimension of the cover member 6 along the vertical direction may be the same as the height dimension of the door body 31 along the vertical direction.

[0063] like Figure 6 and Figure 7 As shown, the cover member 6 has, for example, a front wall portion 61 covering the front of the door body 31 and a side wall portion 62 covering the side of the door body 31, and the cross section is formed in an L-shape. The front wall portion 61 is mounted to the door body 31 by mounting screws 63. A plurality of mounting screws 63 are provided along the up-down direction. The cover member 6 is detachably mounted to the door body 31.

[0064] Next, the procedure for rotating the door 3 around the second axis C2 using the above-mentioned rotating mechanism 5 will be described in comparison with a comparative example.

[0065] In the case of the comparative example, the cantilevered door has a free end side of the door that is inclined downward due to its own weight as it is used for many years. In this case, in the comparative example, it is sometimes difficult to adjust the angle of the door.

[0066] On the other hand, the rotating mechanism 5 of the present embodiment can adjust the inclination of the door 3 by rotating the door 3 around the second axis C2 in a state where the door 3 is attached.

[0067] like Figure 7 As shown, in the angle adjustment using the rotating mechanism 5, first, the user releases the fastening of the mounting screws 63 and removes the cover member 6 from the door body 31. Figure 5 As shown, if the cover member 6 is removed, the rotating mechanism 5 is exposed. Thus, the rotating mechanism 5 can be operated.

[0068] Then, if Figure 4 As shown, by loosening the fastening member 49 that fixes the support member 4 to the frame 2 , the support member 4 can rotate around the second axis C2 .

[0069] Then, the user inserts the tool 19 into the receiving port 57 of the fixture of the rotating mechanism 5. In this state, if the user rotates the tool 19, the sun gear 51 rotates. In addition, the multiple planetary gears 52 meshing with the sun gear 51 rotate. If the planetary gears 52 rotate, the mounting plate 50 having the internal teeth 53 meshing with the planetary gears 52 rotates around the second axis C2 relative to the frame 2. At this time, the rotation direction of the sun gear 51 and the rotation direction of the planetary gears 52 are opposite to each other. As a result, the support member 4 and the door 3 rotate around the second axis C2 relative to the frame 2 in an integrated state.

[0070] The user adjusts the inclination of the support member 4 and the door 3 by adjusting the rotation amount of the sun gear 51 so as to reduce the inclination of the door 3. Correspondingly, the user operates the rotating mechanism 5 so that the door 3 rotates around the second axis C2 relative to the frame 2. At this time, along with the rotation of the support member 4, the position of the long side direction of the long hole 45 moves relative to the position of the fastening member 49 connecting the frame 2 and the support member 4.

[0071] After the support member 4 and the door 3 are at a predetermined angle relative to the frame, the user fixes the fastening member 49 connecting the frame 2 and the support member 4 while maintaining the predetermined angle. Finally, the cover member 6 is reattached to the door body 31. Thus, the angle adjustment of the door 3 is completed.

[0072] According to the present embodiment, the power distribution cabinet 1 has a rotating mechanism 5 having a second axis C2 along a direction orthogonal to the surface direction of the opening 22 as a rotation center. The rotating mechanism 5 rotates the door 3 relative to the frame 2 around the second axis C2. Thus, in a case where the free end side of the cantilever-supported door 3 is tilted in a downward hanging manner, the inclination of the door 3 can be corrected by rotating the door 3 around the second axis C2. Therefore, the generation of a gap caused by the inclination of the door 3 and the entry of dust into the power distribution cabinet 1 through the gap can be suppressed. By providing a rotating mechanism 5 having the second axis C2 as the rotation center, the angle of the door 3 can be adjusted without removing the door 3 from the frame 2. Therefore, the operation related to the angle adjustment can be easily performed, and the angle of the door 3 can be adjusted with good precision.

[0073] Therefore, it is possible to provide the switch cabinet 1 in which the inclination angle of the door 3 can be easily adjusted.

[0074] In addition, the power conversion device 10 also exhibits the same effects as those of the switchboard 1 .

[0075] In the comparative example, if the door 3 is tilted, there may be a misalignment between the key seat (not shown) on the housing 2 and the key hole 34 on the door 3. Therefore, in the comparative example without the rotation mechanism, it may be difficult to insert the key.

[0076] In contrast, according to the switchboard 1 of this embodiment, the tilt of the door 3 can be corrected using the rotation mechanism 5, so that the misalignment between the key seat and the keyhole 34 can be reduced. Therefore, poor operation when inserting the key into the keyhole 34 can be suppressed, further improving the convenience of the switchboard 1.

[0077] The supporting member 4 has a substrate portion 41 and a hinge 42, and the substrate portion 41 has a fixing portion 43. The fixing portion 43 allows the substrate portion 41 to be rotated by the rotating mechanism 5 when the substrate portion 41 is locked to the frame 2. As a result, the supporting member 4 can be rotated relative to the frame 2 around the second axis C2. The door 3 is supported on the supporting member 4 via the hinge 42 so that it can be opened and closed. Therefore, the supporting member 4 rotates around the second axis C2, and thus the door 3 rotates around the second axis C2 together with the supporting member 4. The door 3 and the frame 2 are connected via the supporting member 4, so the angle of the door 3 can be adjusted without removing the door 3 from the frame 2. In addition, the rotating mechanism 5 is provided on the supporting member 4 instead of the door 3, thereby making it easy to adjust the angle without complicating the structure of the door 3.

[0078] The base plate portion 41 is formed in a plate shape. A long hole 45 is formed on the surface of the base plate portion 41 along the rotation direction of the door 3 around the second axis C2, for inserting the fastening member 49 connecting the frame 2 and the support member 4. As a result, when the support member 4 is rotated, the support member 4 is allowed to rotate relative to the frame 2, thereby changing the relative position of the fastening member 49 relative to the long hole 45. 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 installed on the frame 2.

[0079] The rotating mechanism 5 can be arranged at the center of the long side direction of the substrate 41. Thus, the center of the long side direction of the substrate 41, i.e., the center of the door 3 in the up-down direction, can be used as the rotation center to rotate the door 3 around the second axis C2. Therefore, when the angle of the door 3 is adjusted, the displacement of the door 3 and the frame 2 can be suppressed to be small. Therefore, the appearance quality of the door 3 after the angle adjustment can be improved.

[0080] The rotating mechanism 5 has a receiving port 57 for a clamp, and a person can operate the door 3 to rotate around the second axis C2 relative to the frame 2. The user can rotate the clamp by inserting the clamp into the receiving port 57 of the clamp, thereby rotating the door 3 to a desired angle. Since the angle of the door 3 is adjusted in accordance with the rotation amount of the clamp, the user can adjust the angle of the door 3 with high precision by operating the clamp while observing the state of the door 3.

[0081] The rotating mechanism 5 may include a planetary gear mechanism having a sun gear 51, planetary gears 52, and internal gears 53. Thus, the angle of the door 3 can be easily adjusted by using the rotating mechanism 5 with a simpler structure. In addition, by using any gear of the rotating mechanism 5, the rotational force based on the user's operation can be effectively converted into the rotational force of the door 3.

[0082] The power distribution cabinet 1 may have a cover member 6 that covers the rotating mechanism 5. Thus, during normal use when the angle of the door 3 is not adjusted, the rotating mechanism 5 can be prevented from being exposed to the outside. Thus, it is possible to prevent unexpected external force from being input to the rotating mechanism 5, and prevent the door 3 from accidentally rotating around the second axis C2. The cover member 6 can be loaded and unloaded relative to the door 3. Therefore, when the angle of the door 3 is adjusted, the rotating mechanism 5 can be easily reached by removing the cover member 6. Therefore, the ease of use of the power distribution cabinet 1 can be improved during normal use and when the angle of the door 3 is adjusted.

[0083] The power conversion device 10 only needs to have the above-mentioned distribution cabinet 1 and the electrical equipment 8 accommodated in the distribution cabinet 1. Here, it is assumed that in the power conversion device 10 that accommodates high-voltage electrical equipment 8, if dust or foreign matter enters the distribution cabinet 1, it is possible to affect the internal electrical equipment 8. Therefore, it is necessary to suppress the gap between the frame 2 and the door 3. According to the power conversion device 10, since it has the above-mentioned distribution cabinet 1, it is possible to use the rotating mechanism 5 to adjust the angle of the door 3 when the door 3 is tilted. Thereby, the generation of the gap between the door 3 and the frame 2 caused by the tilt of the door 3 can be suppressed. Therefore, it can be preferably used for the power conversion device 10 that particularly requires airtightness.

[0084] According to at least one embodiment described above, the frame 2 has an opening 22 on one side (front face 16). The door 3 is supported to be rotatable around a first axis C1 along one side, so that it can be opened and closed in a manner covering at least a portion of the opening 22. The support member 4 is sandwiched between the frame 2 and the door 3, and supports the door 3 on the frame 2. The rotating mechanism 5 can easily adjust the inclination angle of the door 3 by rotating the door 3 relative to the frame 2 around a second axis C2 along a direction orthogonal to the surface direction of the opening 22.

[0085] Several embodiments of the present invention have been described, but these embodiments are provided as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the scope of the subject matter of the invention. These embodiments and their variations are included in the scope or subject matter of the invention, and are also included in the invention described in the claims and the scope of their equivalents.

[0086] For example, in the above description of the embodiment, the structure in which the internal teeth 53 are provided on the door 3 via the support member 4 and the sun gear 51 is provided on the frame 2 is described, but the present invention is not limited thereto. Alternatively, the sun gear 51 may be provided on the door 3 and the internal teeth 53 may be provided on the frame 2.

[0087] In the above description of the embodiment, the structure having two doors 3, namely, the first door 35 and the second door 36, is described, but the number of doors 3 is not limited to the above embodiment. The switchboard 1 may also be configured to have one door 3. In the case of having a plurality of doors 3, a rotating mechanism 5 may be provided on each door 3.

[0088] The cover member 6 may be provided at a portion of the door 3 in the vertical direction. The shape of the cover member 6 and the method of mounting the cover member 6 to the door 3 are not limited to the above-mentioned embodiment. That is, the cover member 6 only needs to cover at least the rotating mechanism 5, and may be detachably mounted to the door 3 by means of a clip or the like without using screws, for example.

[0089] Description of symbols

[0090] 1…distribution cabinet; 2…frame; 3…door; 4…support member; 5…rotating mechanism; 6…cover member; 8…electrical equipment; 10…power conversion device; 16…front (one side); 22…opening; 41…substrate portion; 42…hinge; 43…fixing portion; 45…long hole; 49…fastening member; 51…sun gear; 52…planetary gear; 53…internal gear; 57…receiving port of the fixture; C1…first axis; C2…second axis.

Claims

1. A power distribution cabinet, comprising: a frame having an opening on one side; a door supported so as to be rotatable about a first axis along the one side surface and capable of being opened and closed so as to cover at least a portion of the opening; a supporting member, sandwiched between the frame and the door, and supporting the door on the frame; A rotating mechanism is provided to rotate the door relative to the frame body around a second axis in a direction perpendicular to the surface direction of the opening, The supporting member comprises: a substrate portion extending along the first axis, being locked to the frame body through a fixing portion, and being supported by the frame body in a manner rotatable around the second axis; a hinge mounted on the base plate portion, supporting the door so as to be rotatable about the first axis, The fixing portion is locked to the frame body so as to allow the rotation of the fixing portion by the rotating mechanism. The second axis is located at a central portion of the door in a longitudinal direction along the first axis.

2. The power distribution cabinet according to claim 1, The substrate portion is formed in a plate shape, A long hole is formed on a surface of the base plate portion along a rotation direction of the door about the second axis, and a fastening member for connecting the frame and the supporting member is inserted into the long hole.

3. The power distribution cabinet according to claim 1, The rotating mechanism is provided at a central portion in a longitudinal direction of the substrate portion.

4. The power distribution cabinet according to claim 1, The rotating mechanism has a receiving opening for a clamp, and is operated by a person to rotate the door relative to the frame around the second axis.

5. The power distribution cabinet according to claim 1, The rotating mechanism has: a sun gear, disposed in one of the frame and the door, and rotating around the second axis; A plurality of planetary gears are arranged on the outer periphery of the sun gear and rotate around a rotation axis fixed in a circumferential direction of the sun gear; Internal teeth, mounted on the other of the frame and the door, mesh with the planetary gear.

6. The power distribution cabinet according to claim 1, The switchboard includes a cover member that covers at least the rotating mechanism.

7. A power conversion device, comprising: The power distribution cabinet according to any one of claims 1 to 6; The electrical equipment is stored inside the power distribution cabinet.

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