JP2020088042A - Cabinet for electric power unit - Google Patents

Abstract

To provide a cabinet for electric power unit excellent in weatherability, waterproofness/dust resistance, capable of restraining temperature rise by solar insolation, and also excellent in assemblability.SOLUTION: A cabinet 1 for electric power unit includes a housing space S of electrical components having a bottom plate 11, a top plate 12 facing the bottom plate 11, a back plate 13 coupled to the rear end part of the bottom plate and the top plate, a first side plate 14 coupled to the first coupling end face 18 of one of the bottom plate, the top plate and the back plate, a second side plate 15 coupled to the second coupling end face 19 of the other of the bottom plate, the top plate and the back plate, and a front plate 16 facing the back plate, and coupled to the front end part 11p of the bottom plate, the front end part 12p of the top plate, the front end part 14p of the first side plate and the front end part 15p of the second side plate, and a second top plate 20 covering the top plate is provided while spaced apart therefrom. A manufacturing method of a cabinet for electric power unit is also provided.SELECTED DRAWING: Figure 1

Description

The present invention relates to a power supply device cabinet that accommodates electrical equipment and a method for manufacturing the same, and more particularly to a power supply device cabinet that is installed outdoors and a method for manufacturing the same.

Conventionally, for example, a power supply device such as a switchboard, a distribution board, and a control panel may be installed outdoors. In this case, it is necessary to protect the power supply device from rainwater, dust, sunlight, and the like. For example, Patent Document 1 discloses a structure in which a large power transformer is attached to an outdoor unit of an air conditioner installed outdoors.
In this case, in order to prevent the influence of rainwater after installing the electrical component box and large power transformer to the outdoor unit, the top plate and side plates of the cover that are attached to the base plate to cover the power transformer The upward seam formed between the abutting end faces of is covered with the first and second flaps to prevent rainwater from entering the inside of the cover through the seam.

Patent Document 2 discloses an outdoor cabinet including a box-shaped main body having an opening on the front surface and a door that opens and closes an opening attached to the main body. In this case, it has a body frame integrally formed with left and right side plates on both left and right sides of the back plate, and a top plate and a bottom plate fixed above and below the body frame, and the top plate and the bottom plate are bent pieces rising from the peripheral edge thereof. And a sealing material having elasticity is fixed to the inner peripheral edge of the top plate. Then, this top plate is put on the upper part of the body frame in a state where the body frame is in contact with the sealing material, the bottom plate is fitted into the lower part of the body frame, and the bent pieces of the top plate and the bottom plate are with respect to the body frame. The structure is fixed by rivets.

JP, 2016-65705, A JP, 2016-152250, A

In the outdoor unit for an air conditioner disclosed in Patent Document 1, a seal material is attached to a joint that constitutes a butt end surface of an opening portion of a base plate and a cover, and the seal material is pressure-bonded to the joint so as to sandwich the seal material. With this structure, rainwater is prevented from entering the inside of the cover through this joint.

However, in the case of the structure of the cover shown here, since it is not installed directly outdoors, it does not require high performance such as waterproofness, dustproofness, weather resistance, etc. The property, for example, the waterproof/dustproof property according to the IP standard is about IP43. Therefore, the structure of this cover is not sufficient as a waterproof, dustproof, and weatherproof structure of a power supply device cabinet installed directly outdoors, and particularly, a printed circuit board or an electronic device equipped with precision parts such as ICs and the like. There is a problem in the waterproof/dustproof performance (performance of IP55 or higher in the IP standard) for safely protecting the equipment.

In the outdoor cabinet disclosed in Patent Document 2, in order to maintain high sealing performance, the top plate is pressed against the upper and lower edge portions of the left and right side plates and the back plate against the elasticity of the sealing material. I have to stop rivets. That is, it is necessary to insert the rivet into the rivet hole and perform the fastening work while the sealing material is compressed, which requires a technique for the assembling work, and the assembling workability is poor. Further, in order to secure the sealing property, it is necessary to set the formation position of the rivet hole in consideration of the thickness and elasticity of the sealing material, and a problem that high molding accuracy is required for processing the plate material to be assembled, etc. was there.

Further, in a power supply device cabinet installed outdoors, the cabinet itself is exposed to wind and rain, and is also directly exposed to sunlight. Therefore, especially when a printed circuit board or electronic equipment equipped with precision parts such as ICs is installed, the temperature rise due to solar radiation becomes a big problem, and a countermeasure against heat due to solar radiation becomes a big problem.

The present invention has been made in view of the above-mentioned circumstances, and an object thereof is a power supply device which is excellent in weather resistance, waterproof/dustproof, can suppress a temperature rise due to solar radiation, and is also excellent in assemblability. Is to provide a cabinet for use.

The above object can be achieved by the following means. That is, the present invention is as follows.
[1]
A power supply cabinet that can be installed outdoors,
A bottom plate having a front end,
A top plate facing the bottom plate and having a front end,
A back plate connected to the rear end of the bottom plate and the top plate,
A first side plate having a front end connected to one of the first connecting end faces of the bottom plate, the top plate and the back plate;
A second side plate having a front end connected to the other second connecting end face of the bottom plate, the top plate and the back plate;
A front plate attached so as to contact each of the front end portions,
A housing space for electrical parts formed by
A cabinet for a power supply device provided with a second top plate that covers the top plate with a space provided between the top plate and the top plate.

[2]
In the power supply device cabinet according to [1],
The second top plate has a substantially L-shaped cross section having a top wall that covers the upper side along the top plate and a front wall that extends from the front end of the top wall to near the front end of the top plate. Power supply cabinet.

[3]
In the power supply cabinet according to [1] or [2],
For the power supply device, wherein the first side plate and the second side plate include an extension part that extends above the top plate, and the second top plate is attached to the extension part. cabinet.

[4]
In the power supply cabinet according to [3],
A cabinet for a power supply device, wherein an opening is formed in the extending portion.

[5]
In the power supply device cabinet according to any one of [1] to [4],
A first sealing member inserted between the first side plate and the first connecting end face, a second sealing member inserted between the second side plate, and the second connecting end face. 2. A cabinet for a power supply device, comprising: a second sealing material, wherein the first sealing material and the second sealing material are heat-resistant double-sided adhesive tapes.

[6]
In the power supply cabinet according to [5],
A cabinet for a power supply device in which three surfaces of the bottom plate, the top plate and the back plate are formed by one plate material.

[7]
In the cabinet for a power supply device according to [5] or [6],
The first connecting part in which the first side plate and the first connecting end face are connected and the second connecting part in which the second side plate and the second connecting end face are connected are the first connecting part. Cabinet for power supply device, wherein the sealing material and the second sealing material are clamped and fixed by a fastening member that compresses the second sealing material in the thickness direction.

[8]
In the power supply device cabinet according to any one of [1] to [7],
The power supply device cabinet in which the bottom plate, the top plate, the back plate, the first side plate, and the second side plate are painted after connection.

[9]
A method of manufacturing a power supply cabinet that can be installed outdoors, comprising:
When assembling the bottom plate, the top plate, the back plate, the first side plate and the second side plate, the bottom plate, the top plate, the back plate, the first side plate and the second side plate A step of sandwiching a heat-resistant double-sided adhesive tape in a connecting part for overlapping and connecting a part of the above, and thereafter a step of tightening and fastening the connecting part with a fastening member 30 in the overlapping direction, followed by baking coating And a method for manufacturing a power supply device cabinet including the steps.

According to the power supply device cabinet of [1], since the second top plate that covers the top plate that forms the housing space for the electric components is provided, the second top plate blocks sunlight in the outdoor installation state. Since a space is provided between the top plate and the second top plate, it has a buffer function of storing the heat from the second top plate in the space, and the heat dissipation in the space can be expected. It is possible to suppress the heat transfer from the top plate of No. 2 to the accommodation space side, and it is possible to provide the cabinet for the power supply device in which the rise in the temperature inside the cabinet due to the solar radiation is suppressed.

According to the power supply device cabinet of [2], the second top plate includes a top wall that covers an upper side along the top plate and a front wall that extends from a front end of the top wall to a position near the front end of the top plate. Since it has a substantially L-shaped cross section, even if a large space is formed between the top plate and the second top plate, it is possible to reliably prevent solar radiation on the top plate. Further, since the rear side opposite to the front wall can be opened, the inside of the second top plate has good ventilation and excellent heat dissipation, and can effectively suppress the temperature rise due to solar radiation. Cabinet can be provided.

According to the power supply device cabinet of [3], since the second top plate is attached to the extending portion extending above the first side plate and the second side plate, the second side plate is provided. It is possible to reduce the number of parts without the need to specially provide a member for attaching the top plate, and to freely set the distance between the top plate and the second top plate by the extension length of the extension part. It is possible to provide a cabinet for a power supply device.

According to the power supply device cabinet of [4], since the opening is formed in the extending portion, it is possible to improve ventilation of the inside of the second top plate. Further, since the opening is formed, the heat conduction of the extension itself can be lowered, and it is possible to make it difficult to transmit the heat generated by the solar radiation of the second top plate to the accommodation space side of the electric component.

According to the power supply device cabinet of [5], the first and second sealing materials provided on the first and second connecting end surfaces are heat-resistant double-sided adhesive tapes, so that both sealing materials are provided and assembled. Since the sealing property can be maintained even if heat treatment is performed later, it is possible to provide a power supply device cabinet that can be baked and painted after the cabinet is assembled.

According to the power supply device cabinet of [6], since the three surfaces of the bottom surface, the top plate and the back plate are formed of a single plate material, the first and second connection end surfaces on the left and right sides of the single plate material. The housing space can be easily formed only by fixing the first side plate and the second side plate to the. Further, the first and second side plates can be attached and positioned by the adhesive force of the first and second sealing materials to the first and second connection end faces, and temporary fixing before riveting can be performed. It is easy and the cabinet assembling property can be improved.

According to the power supply device cabinet of [7], the first connecting portion and the second connecting portion are tightened and fixed by the fastening member that compresses the first sealing material and the second sealing material in the thickness direction. It is possible to improve the confidentiality of both connection parts. Therefore, it is possible to provide a power supply device cabinet having excellent waterproofness and dustproofness. Further, since welding is not used to secure the airtightness of the connecting portion, there is no fear of thermal deformation during welding, so that the plate material can be made thin. As a result, the weight of the cabinet can be reduced, and the cost can be reduced by reducing the material cost.

According to the power supply device cabinet of [8], since the bottom plate, the top plate, the back plate, the first side plate, and the second side plate have a structure that is painted after connection, each face plate is a coating film. It is possible to provide a power supply device cabinet that can be energized without being insulated and has no potential difference between the face plates.

According to the method for manufacturing a power supply device cabinet in [9], a bottom plate, a top plate, a back plate, a first side plate and a second side plate are partly overlapped and connected to a connecting portion. By using the heat-resistant double-sided adhesive tape, the adhesiveness facilitates the positioning of the members in the connecting portion, and the heat resistance enables baking coating while maintaining the adhesiveness of the connecting portion. Furthermore, since painting is performed after fastening and assembling each face plate, it is possible to energize each face plate and eliminate the potential difference between each face plate. In addition, as painting is done only once after fastening and assembling each face plate, the ease of assembly can be improved. Further, since the coating is a baking coating, the coating film can be made thicker, weather resistance is improved, and it can contribute to maintaining water resistance and dust resistance for a long period of time. A power supply cabinet can be provided.

FIG. 1 is an exploded perspective view of a power supply device cabinet that is an embodiment of the present invention. It is the perspective view seen from the front side in the assembled state of the cabinet for power supply devices shown in FIG. It is the perspective view seen from the back side in the assembled state of the cabinet for power supplies shown in FIG. It is a side view which shows the connection end surface in the cabinet for power supply devices shown in FIG. It is an expanded side view of the C area|region of FIG. It is sectional drawing of the part along the EE line shown in FIG. It is an exploded perspective view in the middle of assembling in the manufacturing method of the cabinet for power supplies of the present invention. FIG. 8 is a perspective view showing an assembled state of the assembly member shown in FIG. 7. It is a disassembled perspective view in the middle of assembling of the cabinet for power supplies of the modification of this invention.

An embodiment of the present invention will be described below with reference to FIGS. In addition, in FIGS. 1 to 3, upper and lower, front and rear, and left and right are shown in the drawings. In addition, in the description of the specification, the upper and lower sides refer to the upper and lower sides in a state where the power supply device cabinet is installed, and the front and rear sides mean that the front plate side is the front and the opposite back plate side is the rear, and the left and right sides are Left and right when viewed from the front plate side.

As shown in FIGS. 1, 2, and 3, the power supply device cabinet 1 of the present embodiment includes a bottom plate 11 on the lower side in an installed state, and a top plate 12 facing the bottom plate 11 and covering the upper side. The back plate 13 connected to the rear ends 17 and 17 of the bottom plate 11 and the top plate 12 (which are also the upper and lower ends of the back plate 13), and one of the left and right sides of the bottom plate 11, the top plate 12, and the back plate 13 (see FIG. The first side surface plate 14 connected to the first connection end surface 18 on the left side in FIG. 1 and the second connection end surface 19 on the other side (right side in FIG. 1) of the bottom surface plate 11, the top plate 12 and the back surface plate 13. It is a box-shaped structure that forms a housing space S<b>1 that includes a second side plate 15 that is connected and a front plate 16 that faces the back plate 13.

The front plate 16 is attached so as to contact the front end 11p of the bottom plate 11, the front end 12p of the top plate 12, the front end 14p of the first side plate 14, and the front end 15p of the second side plate 15. .. Further, the front plate 16 can be attached by means of screws 33 that are screwed into fixing stays 35 provided at the four corners of the cabinet body 10 side.

In the present specification, “coupling” means that the face plates constituting the power supply device cabinet 1 are superposed and fastened.

In the accommodation space S1 inside the cabinet, for example, a printed circuit board or the like having an IC or the like mounted on the electric component mounting portion 28 mounted on the back plate 13 is installed. Further, on the upper side of the top plate 12, there is provided a second top plate 20 which covers the top plate 12 with a space S2 (see FIG. 3) from the top plate 12.

Here, the bottom plate 11, the top plate 12, and the back plate 13 in this embodiment are formed in a U shape by bending a single plate at two positions at right angles. As described above, the three surfaces of the bottom plate 11, the top plate 12, and the back plate 13 are formed of a single plate material that is vertically continuous, which is a preferable structure as a rainwater intrusion prevention structure. The left and right bent end surfaces 18u, 19u of the bottom plate 11, the left and right bent end surfaces 18t, 19t of the top plate 12 and the left and right bent end surfaces 18b, 19b of the back plate 13 have a predetermined width. And is bent at a right angle, and is a flat surface that is continuous in a U shape in a side view and is configured as the first and second connecting end surfaces 18 and 19 (see FIG. 4 ). The first side surface plate 14 is connected to the first connecting end surface 18 on the left side, and the second side surface plate 15 is connected to the second connecting end surface 19 on the right side.
In addition, the first connecting end surface 18, the second connecting end surface 19, the first side surface plate 14, and the second side surface plate 15 are riveted so that they can be fastened at predetermined intervals with fastening members such as rivets 30. The holes rh are provided at predetermined intervals.

Further, the front end portions of the first side surface plate 14 and the second side surface plate 15 are formed with a left front end portion 14p and a right front end portion 15p which are bent at right angles toward the outer right and left sides. Further, a front end portion 11p bent downward at a right angle is formed at a front end portion of the bottom plate 11, and a front end portion 12p bent upward at a right angle is formed at a front end portion of the top plate 12. There is. The upper and lower front end portions 11p and 12p and the left and right front end portions 14p and 15p are located on the same plane and function as drainage portions of the front opening of the accommodation space S1.

The first side surface plate 14 and the second side surface plate 15 are provided with extending portions 14e and 15e that extend upward from the top surface plate 12 when assembled. Then, the second top plate 20 is attached to the extending portions 14e and 15e. The mounting structure of the second top plate 20 is fixed to the left and right mounting surfaces 14t and 15t, which are formed by bending the upper ends of the extending portions 14e and 15e substantially inwardly at right angles, for example, with rivets 30.

Further, the first side plate 14 and the second side plate 15 are provided with mounting reinforcing portions 14b and 15b in which the rear side portions are bent toward the inside of the cabinet and the front side. The attachment reinforcing portions 14b and 15b strengthen the strength of the first side plate 14 and the second side plate 15. Therefore, the pair of upper and lower mounting frames 40 are fixed to the mounting reinforcing portions 14b and 15b by the bolts 48 (see FIG. 3).

The second top plate 20 has an upper surface wall 20t having a size that covers the entire surface along the top plate 12, and a position from the front end portion of the upper surface wall 20t to a position close to the front end portion of the top plate 12 (see FIG. 2). It has a substantially L-shaped cross section with a front wall 20f extending substantially at right angles. Therefore, even when the space S2 in which the distance between the top plate 12 and the second top plate 20 is greatly separated is formed, the front wall 20f can reliably cover the front side of the space S2. On the other hand, the rear surface side opposite to the front wall 20f is appropriately opened in consideration of air permeability (see FIG. 3).

Further, in the extending portion 14e of the first side surface plate 14 and the extending portion 15e of the second side surface plate 15, for example, a large number of horizontally elongated slit-shaped openings 14h and 15h are formed, and the space S2 is formed. Enhances breathability.

In FIG. 1, the first seal member 21 is arranged at the first connecting portion J1 where the first side plate 14 on the left side and the first connecting end face 18 are connected. In addition, the second sealing material 22 is arranged at the second connecting portion J2 where the second side surface plate 15 and the second connecting end surface 19 on the right side in FIG. 1 are connected. The first sealing material 21 and the second sealing material 22 are U-shaped heat-resistant double-sided adhesive tapes corresponding to the first and second connecting end surfaces 18 and 19. In addition, rivet holes rh are formed in the first and second sealing members 21 and 22 at predetermined intervals. The first and second connecting portions J1 and J2 sandwich the first and second sealing members 21 and 22 between the face plates, and are compressed by the rivets 30 in the thickness direction of the face plates and firmly fixed. ..

A heat radiating plate 38 is attached to the outside (back side) of the back plate 13. That is, the heat radiating plate 38 that can effectively dissipate heat to the outside is provided at a position corresponding to the electric component mounting portion 28 on which the IC or the like mounted inside the back plate 13 is mounted. Here, the heat dissipation plate 38 is disposed between the pair of upper and lower mounting frames 40 (see FIG. 3 ).

Here, the bottom plate 11, the top plate 12, the back plate 13, the first side plate 14 and the second side plate 15 are the first connecting portion J1 and the second connecting plate in a state where each face plate is not painted. The part J2 is connected by a rivet 30, and the outer surface thereof is covered with a coating film 50 (see FIG. 6).

The bending structure of the second connecting end surface 19 composed of the three bending end surfaces 19t, 19b, and 19u as described above will be described with reference to FIG. The first connecting end face 18 has the same structure as the second connecting end face 19, and thus the description thereof is omitted.

As shown in FIG. 4, the second connecting end surface 19 has an edge of a bent end surface between the upper end portion (the portion indicated by A in the figure) and the lower end portion (the portion indicated by B in the figure) of the back plate 13. How to match the parts is different. In the case of the present embodiment, at the upper end portion of the back plate 13, as shown in an enlarged view of the portion A in the drawing, the lower end edge 19tu of the bent end face 19t of the top plate 12 and the bent end face 19b of the back plate 13 are formed. A break is formed in contact with the upper edge 19bt. Further, at the lower end of the back plate 13, as shown in an enlarged view of the portion B in the figure, the rear end 19ub of the bent end face 19u of the bottom plate 11 and the front end of the bent end face 19b of the back plate 13 are shown. A break is formed in contact with 19bf. That is, as a structure for preventing the intrusion of rainwater, the upper end of the back plate 13 is configured so that the break is not located at the same height as the surface of the top plate 12, and the lower end is not located on the same face as the back plate 13. Is configured.

The connecting/fixing structure of the first connecting portion J1 and the second connecting portion J2 will be described with reference to FIGS. 5 and 6. Although the description with reference to FIGS. 5 and 6 is for the second connecting portion J2, the description of the first connecting portion J1 is omitted because it has the same configuration.

As shown in FIG. 5, the second sealing material 22 arranged on the second connecting end face 19 is configured to have a width (see FIG. 6) substantially equal to the connecting width d1 of the connecting end face 19. Further, the rivet hole rh is formed sufficiently smaller than the connection width d1 so that the sealing function of the sealing material 22 can be sufficiently exerted. That is, the sealing width d2 of the second sealing material 22 on both sides of the rivet hole rh (both sides in the direction of the connecting width d1) is set to a width sufficient to secure the sealing property, for example, the head of the rivet 30. It is set to be larger than the restraining width d3 of the portion 30a.

As shown in FIG. 6, the connection of the second connecting portion J2 is performed by overlapping the second side plate 15 and the bent end surface 19b of the second connecting end surface 19 with the second sealing material 22 sandwiched therebetween. The head portion 30a and the tip portion 30b of the rivet 30 are strongly pressed and fixed in the direction. Further, the second connecting portion J2 is covered with the coating film 50 including the overlapping boundary portion jp, the head portion 30a and the tip portion 30b of the rivet 30.

Hereinafter, a method of manufacturing the power supply device cabinet 1 of the present invention will be described with reference to FIGS. 7 and 8.
As one step of assembling the power supply device cabinet 1, as shown in FIG. 7, for example, an unpainted single plate is bent to form a bottom plate 11, a top plate 12, and a back plate 13, and the same painting is performed. It is assembled so as to be sandwiched by the first side plate 14 and the second side plate 15 which are not provided. At this time, the first and second sealing materials 21 and 22 of the heat-resistant double-sided adhesive tape are attached to the first connecting end surface 18 and the second connecting end surface 19 in advance. Then, the first sealing material 21 is sandwiched between the first side surface plates 14 and the second sealing material 22 is sandwiched between the second side surface plates 15 so that they are bonded together. By the step of sandwiching both the seal members 21 and 22, the first and second connecting portions J1 and J2 are temporarily fixed in position.

In this temporarily fixed state, the rivets 30 are sequentially attached to the rivet holes rh and riveting is performed. That is, the main part of the cabinet body 10 that is firmly connected by the process of tightening the first and second connecting portions J1 and J2 in the overlapping direction with the rivet 30 and that forms the accommodation space S1 as shown in FIG. Assembled. In the cabinet body 10, the bottom plate 11, the top plate 12, the back plate 13, the first side plate 14 and the second side plate 15 are in a state in which electricity can be supplied via the rivets 30.

Next, a powder baking coating process is performed on the cabinet body 10 assembled as shown in FIG.
In this case, the powder baking coating uses static electricity, for example, in a state where a predetermined coating powder is charged by using a spray gun or the like (not shown) and the cabinet body 10 shown in FIG. 8 is grounded. To adhere to the entire surface. After that, a baking coating film is formed on the cabinet body 10 by heating (for example, 140° C. to 200° C.) in a baking drying oven.

When the baking coating is performed in this manner, the entire cabinet body 10 is covered with the coating film 50. Therefore, in the first and second connecting portions J1 and J2, as shown in FIG. 6, both the overlapping boundary portion jp and the head portion 30a side (outside) and the tip portion 30b side (inside) of the rivet 30 are formed. It is completely covered by the coating film 50.
The separately assembled second top plate 20 and front plate 16 are attached to the cabinet body 10 thus baked and painted, and the assembly of the power supply device cabinet 1 is completed.

In the method for manufacturing the power supply device cabinet 1 according to the present embodiment, the cabinet body 10 is baked and coated before the second top plate 20 is connected, but the baking process is performed after the second top plate 20 is connected. You may implement. In this case, the second top plate 20, including the rivets 30 at its connecting portion, is subjected to baking coating.

As described above, in the present embodiment, since the second top plate 20 that covers the top plate 12 forming the accommodation space S1 of the electrical component is provided, the second top plate 20 allows sunlight to be emitted in the outdoor installation state. Can be blocked. In addition, since the space S2 is provided in the top plate 12 and the second top plate 20, it has a buffer function to store the heat from the second top plate 20 in the space S2, and heat can be released in the space S2. It is possible to suppress heat transfer from the second top plate 20 to the accommodation space S1 side, and it is possible to suppress an increase in cabinet internal temperature due to sunlight.

In addition, in the present embodiment, since the second top plate 20 is attached to the extending portions 14e and 15e that extend above the first side plate 14 and the second side plate 15, There is no need to specially provide a member for attaching the second top plate 20. Further, the distance between the top plate 12 and the second top plate 20 can be freely set by the extension length of the extension parts 14e and 15e.

In addition, in the present embodiment, the second top plate 20 includes the top wall 20t that covers the top side along the top plate 12 and the front wall 20f that extends from the front end of the top wall 20t to the vicinity of the front end of the top plate 12. Since it is configured to have a substantially L-shaped cross-section with and, even when the space between the top plate 12 and the second top plate 20 is large, it is possible to reliably prevent solar radiation to the top plate 12. .. Further, the rear side opposite to the front wall 20f can be opened, the ventilation inside the second top plate 20 can be improved, the heat dissipation is excellent, and the temperature rise due to solar radiation can be effectively suppressed. it can.

Further, in the present embodiment, since the openings 14h and 15h are formed in the extending portions 14e and 15e, it is possible to improve the ventilation of the inside of the second top plate 20. Further, since the openings 14h and 15h are formed, the heat conduction of the extending portions 14e and 15e itself can be reduced, and it is difficult to transfer the heat generated by the solar radiation of the second top plate 20 to the accommodation space S1 side of the electric component. You can

Further, in the present embodiment, the first and second sealing members 21 and 22 provided on the first and second connecting end faces 18 and 19 are heat resistant, so that both sealing members 21 and 22 are provided. The sealability can be maintained even if heat treatment is performed after assembly. Therefore, baking coating can be applied after the cabinet is assembled.

Further, in the present embodiment, since the three surfaces of the bottom plate 11, the top plate 12 and the back plate 13 are formed by one plate material, the first and second connection end surfaces on the left and right sides of this one plate material. The accommodation space S1 can be easily formed only by fixing the first side surface plate 14 and the second side surface plate 15 to 18, 19. Further, the first and second side plates 14 and 15 can be attached and positioned to the first and second connecting end surfaces 18 and 19 by the adhesive force of the first and second sealing materials 21 and 22. In addition, temporary fixing before riveting can be easily performed, and cabinet assemblability can be improved.

In addition, in the present embodiment, since the first connecting portion J1 and the second connecting portion J2 are tightened and fixed by the rivet 30 that compresses the first and second sealing members 21 and 22 in the thickness direction, both The airtightness of the joints J1 and J2 is improved, and the waterproofness and dustproofness are excellent. In addition, since welding is not used to secure the airtightness of both the connecting portions J1 and J2, there is no fear of thermal deformation during welding, so the plate material can be made thin. As a result, the weight of the cabinet can be reduced, and the cost can be reduced by reducing the material cost.

As described above, in the present embodiment, since the bottom plate 11, the top plate 12, the back plate 13, the first side plate 14 and the second side plate 15 have a structure that is painted after connection, each face plate is Electric current can be supplied without being insulated by the coating film 50, and a potential difference between the face plates does not occur. Also, by painting only at the final stage of the cabinet assembly, it is not necessary to paint each face plate before assembly, and the assembly workability can be improved.

In addition, in the manufacturing method of the present invention, the bottom plate 11, the top plate 12, the back plate 13, the first side plate 14 and the second side plate 15 are partially overlapped and fastened to each other to form a connecting portion (first and second plates). By using the heat-resistant double-sided adhesive tape for the second joints J1, J2), the adhesiveness facilitates the positioning of the members of the joints, and the heat resistance enables baking coating while maintaining the adhesion of the joints. It will be possible.
Further, when the step of baking is performed after connecting the second top plate 20, the rivet 30 of the connecting portion of the second top plate 20 can be included in the baking coating, and the second top plate 20 can be baked. Good function can be maintained over a long period of time. Therefore, it is possible to contribute to the long-term maintenance of the waterproof/dustproof property of the accommodation space S1.
Furthermore, since painting is performed after fastening and assembling each face plate, it is possible to energize each face plate and eliminate the potential difference between each face plate. In addition, as painting is done only once after fastening and assembling each face plate, the ease of assembly can be improved. Further, since the coating is a baking coating, the coating film 50 can be made thicker, and the strength, chemical resistance, corrosion resistance, and weather resistance are improved, so that water resistance and dust resistance can be maintained for a long time and confidentiality can be maintained for a long time. It is possible to provide the power supply device cabinet 1 that can be guaranteed over the entire range.

Hereinafter, a power supply device cabinet 1 according to a modified example of the present invention will be described with reference to FIG. 9.
As shown in FIG. 9, the power supply device cabinet 1 of the present modification has a configuration in which three housing spaces S3, S4, S5 are formed between the vertically long first and second side plates 14, 15. .. Then, a second top plate 20 spaced apart from the topmost top plate 12 by an appropriate distance is attached to the upper ends of the extending portions 14e, 15e above the first and second side plates 14, 15. There is. The second top plate 20 is composed of a single flat plate.

In addition, each bottom plate 11, each top plate 12, and each back plate 13 in the present embodiment are formed by bending one plate to form three surfaces, similarly to the shape shown in FIG. Further, the first sealing member 21 and the second sealing member 22 of the heat-resistant double-sided adhesive tape are provided on each of the first connecting portions J1 and each of the second connecting portions J2.
Although three front plates 16 are provided so as to close the respective accommodation spaces S3, S4, S5, they may be one vertically long front plate capable of simultaneously closing the three accommodation spaces.

As in this modified example, a plurality of accommodation spaces S3, S4, S5 defined by the bottom plate 11, the top plate 12, and the back plate 13 are provided between the first side plate 14 and the second side plate 15. Since the plurality of sets of plate members (the bottom plate 11, the top plate 12, and the back plate 13) are sandwiched between the pair of both side plates 14 and 15, the plurality of accommodation spaces can be easily formed. can do.

Although one embodiment of the present invention has been described above, the present invention is not limited to this, and the shape, the connecting structure, and the like can be appropriately changed. For example, in the above embodiment, the second top plate 20 is configured to be supported by the left and right first and second side plates 14 and 15, but in addition to the back plate 13 and the top plate 12, for example, A structure in which the second top plate 20 is supported by an overhanging means or another fixing member may be used.

Further, in the above embodiment, the bottom plate 11, the top plate 12 and the back plate 13 are formed by one plate, but the structure may be appropriately connected instead of a single plate structure.
The shape of the second top plate 20 has an L-shaped cross section in the above embodiment, but is not limited to this shape.

Further, in the above-described embodiment, the structure for supporting the electric device in the cabinet is provided on the back plate 13, but the structure is not limited to this, and for example, the bottom plate 11, the top plate 12, and the first and second plates. It may be provided on the two side plates 14 and 15 and is not particularly limited.

Further, in the above-described embodiment, the space S2 between the top plate 12 and the second top plate 20 is formed as a space in which no component is installed, but in this space S2, for example, an electric device having heat generation is installed. You may do it. In this case, by providing a heat-generating device at a position separated from the accommodation space S1 by the top plate 12, a cabinet structure suitable for IC protection having a problem of heat resistance can be obtained.

Although the front plate 16 in the above-described embodiment has a structure that can be removed with screws, it may have a structure that can be opened and closed and that has a hinge structure.
Further, in the above embodiment, the powder baking coating was used as the baking coating, but the present invention is not limited to this, and other baking coating can be used.
In addition, in the above-described embodiment, the connecting portions to be fastened by the rivets 30 are the first connecting portion J1 and the second connecting portion J2, but the fastening structure using screws or bolts is also used for the other face plates. It may be provided with a connecting portion.

1 Cabinet for power supply device 11 Bottom plate 11p, 12p, 14p, 15p Front end part 12 Top plate 14 First side plate 14e, 15e Extension part 14h, 15h Opening part 15 Second side plate 16 Front plate 18 First Connection end face 19 Second connection end face 20 Second top plate 20f Front wall 20t Top wall 21 First sealing material 22 Second sealing material 30 Rivet (fastening member)
J1 1st connection part J2 2nd connection part S accommodation space

The above object can be achieved by the following means. That is, the present invention is as follows.
[1]
A power supply cabinet that can be installed outdoors,
A bottom plate having a front end,
A top plate facing the bottom plate and having a front end,
A back plate connected to the rear end of the bottom plate and the top plate,
A first side plate having a front end connected to one of the first connecting end faces of the bottom plate, the top plate and the back plate;
A second side plate having a front end connected to the other second connecting end face of the bottom plate, the top plate and the back plate;
A front plate attached so as to be in contact with each of the front end portions, and a housing space for electric components formed by the front plate ,
A first seal member made of a heat-resistant double-sided adhesive tape, inserted between the first side plate and the first connecting end face;
A second sealing member made of a heat-resistant double-sided adhesive tape, inserted between the second side plate and the second connecting end face;
The bottom face plate, the top face plate and the three faces of the back face plate are formed of a single plate material,
The first connecting part in which the first side plate and the first connecting end face are connected to each other and the second connecting part in which the second side plate and the second connecting end face are connected to each other are the first connecting part. Is fixed by a fastening member that compresses the sealing material and the second sealing material in the thickness direction,
Each of the first side plate and the second side plate includes an extending portion that extends above the top plate and has an opening,
A second top plate is provided to cover the top plate with a space provided between the top plate and
The second top plate is attached to the extending portion, and extends from the front wall of the top wall covering the upper side along the top plate and the front end of the top wall to a position near the front end of the top plate. It is configured in a substantially L-shaped cross section having a wall,
A power supply device cabinet in which a heat-generating electric device is installed in a space between the second top plate and the top plate .

[ 2 ]
In the power supply cabinet according to [ 1 ] ,
The power supply device cabinet in which the bottom plate, the top plate, the back plate, the first side plate, and the second side plate are painted after connection.

According to the power supply device cabinet of [1] , the second top plate has an upper surface wall that covers the upper side along the top plate and a front wall that extends from the front end portion of the upper surface wall to near the front end portion of the top surface plate. Since it has a substantially L-shaped cross section, even if a large space is formed between the top plate and the second top plate, it is possible to reliably prevent solar radiation on the top plate. Further, since the rear side opposite to the front wall can be opened, the inside of the second top plate has good ventilation and excellent heat dissipation, and can effectively suppress the temperature rise due to solar radiation. Cabinet can be provided.

According to the power supply device cabinet of [1] , since the second top plate is attached to the extending portion extending above the first side plate and the second side plate, It is possible to reduce the number of parts without the need to specially provide a member for attaching the top plate, and to freely set the distance between the top plate and the second top plate by the extension length of the extension part. It is possible to provide a cabinet for a power supply device.

According to the power supply device cabinet of [1] , since the opening is formed in the extending portion, it is possible to improve ventilation of the inside of the second top plate. Further, since the opening is formed, the heat conduction of the extension itself can be lowered, and it is possible to make it difficult to transmit the heat generated by the solar radiation of the second top plate to the accommodation space side of the electric component.

According to the power supply device cabinet of [1] , since the first and second sealing materials provided on the first and second connecting end surfaces are heat-resistant double-sided adhesive tapes, both sealing materials are provided and assembled. Since the sealing property can be maintained even if heat treatment is applied later, it is possible to provide a power supply device cabinet that can be baked and painted after the cabinet is assembled.

According to the power supply device cabinet of [1] , since the three surfaces of the bottom surface, the top plate and the back plate are formed of a single plate material, the first and second connection end surfaces on the left and right sides of the single plate material. The housing space can be easily formed only by fixing the first side plate and the second side plate to the. Further, the first and second side plates can be attached and positioned by the adhesive force of the first and second sealing materials to the first and second connection end faces, and temporary fixing before riveting can be performed. It is easy and the cabinet assembling property can be improved.

According to the power supply device cabinet of [1] , the first connecting portion and the second connecting portion are tightened and fixed by the fastening member that compresses the first sealing material and the second sealing material in the thickness direction. It is possible to improve the confidentiality of both connection parts. Therefore, it is possible to provide a power supply device cabinet having excellent waterproofness and dustproofness. Further, since welding is not used to secure the airtightness of the connecting portion, there is no fear of thermal deformation during welding, so that the plate material can be made thin. As a result, the weight of the cabinet can be reduced, and the cost can be reduced by reducing the material cost.

According to the power supply device cabinet of [ 2 ], since the bottom plate, the top plate, the back plate, the first side plate, and the second side plate have a structure that is painted after connection, each face plate is a coating film. It is possible to provide a power supply device cabinet that can be energized without being insulated and has no potential difference between the face plates.

Claims (9)

A power supply cabinet that can be installed outdoors,
A bottom plate having a front end,
A top plate facing the bottom plate and having a front end,
A back plate connected to the rear end of the bottom plate and the top plate,
A first side plate having a front end connected to one of the first connecting end faces of the bottom plate, the top plate and the back plate;
A second side plate having a front end connected to the other second connecting end face of the bottom plate, the top plate and the back plate;
A front plate attached so as to contact each of the front end portions,
A housing space for electrical parts formed by
A cabinet for a power supply device provided with a second top plate that covers the top plate with a space provided between the top plate and the top plate. The power supply device cabinet according to claim 1,
The second top plate has a substantially L-shaped cross section having a top wall that covers the upper side along the top plate and a front wall that extends from the front end of the top wall to near the front end of the top plate. Power supply cabinet. The power supply device cabinet according to claim 1 or 2,
The first side surface plate and the second side surface plate are provided with an extending portion extended above the top plate,
A power supply device cabinet in which the second top plate is attached to the extending portion. The power supply cabinet according to claim 3,
A cabinet for a power supply device, wherein an opening is formed in the extending portion. The power supply device cabinet according to any one of claims 1 to 4,
A first seal member inserted between the first side plate and the first connecting end face;
A second seal member inserted between the second side plate and the second connecting end face;
A power supply cabinet, wherein the first sealing material and the second sealing material are heat-resistant double-sided adhesive tapes. The power supply device cabinet according to claim 5,
A cabinet for a power supply device in which three surfaces of the bottom plate, the top plate and the back plate are formed by one plate material. The power supply cabinet according to claim 5 or 6,
The first connecting part in which the first side plate and the first connecting end face are connected and the second connecting part in which the second side plate and the second connecting end face are connected are the first connecting part. Cabinet for power supply device, wherein the sealing material and the second sealing material are clamped and fixed by a fastening member that compresses the second sealing material in the thickness direction. The power supply device cabinet according to any one of claims 1 to 7,
The power supply device cabinet in which the bottom plate, the top plate, the back plate, the first side plate, and the second side plate are painted after connection. A method of manufacturing a power supply cabinet that can be installed outdoors, comprising:
When assembling the bottom plate, top plate, back plate, first side plate and second side plate,
A step of sandwiching a heat-resistant double-sided adhesive tape in a connecting portion for overlapping and connecting a part of the bottom plate, the top plate, the back plate, the first side plate and the second side plate,
After that, a step of tightening and fastening the connecting portion in a stacking direction with a fastening member,
After that, the process of baking coating,
A method for manufacturing a power supply cabinet including the.

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