JP2019161069A - Electrical equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric device in which rainwater or the like is hard to enter at a joint of packing. A housing (11) includes an opening (20) and a rectangular flange portion (21) extending outward from the opening (20). The lid (12) covers the opening (20) and the flange (21) of the housing (11) and is attached to the flange (21) of the housing (11). The packing (13) is provided between the flange portion (21) and the lid (12). The housing (11) is formed by drawing, and the packing (13) is formed by connecting a plurality of string-shaped members (40) to (43) at a joint portion (44), and the joint portion (13). 44) is located at the corner (22) of the flange portion (21). [Selection diagram] FIG. 4

Description

  The present invention relates to an electric device such as a power conditioner. Specifically, this invention relates to the packing for sealing between the housing | casing and cover bodies in the said electric equipment.

  Many electrical devices include a housing that houses electrical components and a lid that covers an opening and a flange portion of the housing. In addition, a packing for preventing intrusion of rainwater or the like is provided between the flange portion of the casing and the lid body in an electrical device exposed to wind and rain.

  When the packing is formed by punching from a sheet-like elastic member, the material corresponding to the opening of the packing is wasted. So, in patent document 1, the said packing is divided | segmented into several string-like members, and the adjacent string-like members are joined.

JP 2011-192882 A

  In the case of the packing as in Patent Document 1, it is necessary to devise measures to prevent intrusion of rainwater or the like at a joint portion where adjacent string-like members are joined together. So, in the packing of patent document 1, in order to lengthen the penetration | invasion path | routes, such as rain water, a junction part has a some junction surface.

  However, in order to prevent the intrusion, it is necessary to consider not only the packing but also the characteristics of the housing and the lid. An object of one embodiment of the present disclosure is to provide an electrical device in which rainwater or the like hardly enters at a joint portion of the packing.

  In order to solve the above-described problem, an electrical device according to an aspect of the present disclosure is a rectangular housing that houses electrical components, and includes an opening and a rectangular flange that extends outward from the opening. A cover that covers the opening and the flange of the casing and is attached to the flange of the casing, and is provided between the flange of the casing and the lid An electrical device including a packing, wherein the casing is formed by drawing, and the packing is formed by connecting a plurality of string-like members at a joint portion, and the joint portion includes the flange. Located in the corner of the part.

  By the way, when a square casing is formed by drawing, it is necessary to adjust the inclination of the side wall and the like. However, even if such an adjustment is performed, the corner portion of the flange portion in the casing is not easily inclined.

  Therefore, according to the above configuration, the rectangular casing is formed by drawing, and the joint portion of the packing is located at the corner of the flange portion of the casing. Accordingly, the joint portion of the packing can be in close contact with the flange portion, and rainwater or the like hardly enters at the joint portion of the packing.

  In the electric device, it is preferable that the lid is fastened at a flange portion of the casing. In this case, the joint portion of the packing can be in good contact with the lid and the flange portion of the housing, and rainwater and the like are less likely to enter the joint portion of the packing.

  By the way, the corner portion of the flange portion is most difficult to be inclined even if the position including the diagonal line between the corner portions is adjusted as described above. Therefore, in the electric device, it is preferable that the joint portion has a joint surface including a diagonal direction between corners of the flange portion or a joint surface intersecting with the diagonal line. In this case, the joint portion of the packing can be further adhered to the flange portion, and rainwater or the like is less likely to enter the joint portion of the packing.

  In the electric device, it is preferable that the joint portion has a joint surface parallel to a diagonal line between corners of the flange portion, or a joint surface including a direction of the diagonal line, and a joint surface perpendicular to the diagonal line. In this case, since the gap in the joint surface parallel to the diagonal line or the joint surface including the direction of the diagonal line and the gap in the joint surface perpendicular to the diagonal line are substantially perpendicular, rainwater or the like that has entered one gap It becomes difficult to enter the other gap. As a result, rainwater or the like becomes more difficult to enter.

  By the way, when a rectangular housing is formed by drawing, the corner of the opening has a curved shape. Therefore, it is preferable that the packing includes a bending portion that bends at a corner portion of the flange portion. In this case, the joint portion is located at the curved portion, and the packing has a shape corresponding to the opening of the casing, and rainwater or the like is more difficult to enter at the joint portion of the packing.

  According to one embodiment of the present disclosure, it is possible to provide an electrical device in which rainwater or the like hardly enters at a joint portion of the packing.

It is a perspective view which shows the structure of the power conditioner in embodiment of this indication. It is a figure which shows the structure of the said power conditioner which removed the cover body, (a) is a front view, (b) is the perspective view which looked up at the said power conditioner from the lower side. It is a rear view which shows the structure of the cover body and packing in the said power conditioner. It is a figure which shows the structure of the power conditioner which attached the said cover body, (a) is a front view, (b) And (c) is arrow sectional drawing in the AA of (a). FIG. 3 is a diagram showing a front upper portion and a front lower portion of the power conditioner. It is a rear view which shows an example of the structure of the said cover body and the said packing in the corner part of the said cover body shown in FIG. It is a rear view which shows another example of the structure of the said cover body and the said packing in the corner part of the said cover body shown in FIG. It is a rear view which shows another example of the structure of the said cover body and the said packing in the corner part of the said cover body shown in FIG. It is a rear view which shows another example of the structure of the said cover body and the said packing in the corner part of the said cover body shown in FIG. It is a rear view which shows the other example of a structure of the said cover body and the said packing in the corner part of the said cover body shown in FIG.

  Hereinafter, an embodiment according to an aspect of the present disclosure (hereinafter also referred to as “this embodiment”) will be described with reference to the drawings.

§1 Application Example First, an example of a scene to which the present disclosure is applied will be described based on FIG.

  FIG. 4 is a diagram illustrating a configuration of a power conditioner to which a lid is attached. FIG. 4A is a front view. FIGS. 4B and 4C are cross-sectional views taken along the line AA in FIG. 4A, and show the front upper portion and the front lower portion of the power conditioner, respectively.

  As shown in FIG. 4, the power conditioner 10 (electrical device) is a rectangular housing 11 that houses electrical components, and includes an opening 20 and a rectangular flange that extends outward from the opening 20. A housing 11 having a portion 21, a cover 12 that covers the opening 20 and the flange 21 of the housing 11 and is attached to the flange 21 of the housing 11, and the flange 21 and the lid of the housing 11. And a packing 13 provided between them.

  The casing 11 is formed by drawing, and the packing 13 is formed by connecting a plurality of string-like members 40 to 43 at the joint portion 44, and the joint portion 44 is connected to the corner portion 22 of the flange portion 21. To position.

  By the way, when the square casing 11 is formed by drawing, it is necessary to adjust the inclination of the side wall and the like, but the corner 22 of the flange portion 21 in the casing 11 is inclined even if such adjustment is performed. It is hard to do.

  Therefore, according to the above configuration, the rectangular casing 11 is formed by drawing, and the joint portion 44 of the packing 13 is located at the corner 22 of the flange portion 21 in the casing 11. Therefore, the joint portion 44 of the packing 13 can be in close contact with the flange portion 21, and rainwater or the like hardly enters at the joint portion 44 of the packing 13.

§2 Configuration example An embodiment of the present disclosure will be described with reference to FIGS.

(Configuration of inverter)
The power conditioner of this Embodiment is a power conditioner (Power Conditioning System) used for the grid connection system using photovoltaic power generation.

  The grid interconnection system includes a plurality of solar cells installed on a roof of a house and a power conditioner that converts DC power generated by each solar cell into AC power. This grid interconnection system supplies AC power to the load connected between the power conditioner and the commercial power grid by switching to either grid grid operation or independent operation. is there. Here, the grid interconnection operation means that the power conditioner and the commercial power system are linked and operated. In addition, the self-sustained operation indicates that only the power conditioner is operated, for example, when the commercial power system has a power failure.

  FIG. 1 is a perspective view showing the configuration of the power conditioner 10. FIG. 2 is a diagram illustrating the configuration of the power conditioner 10 with the lid 12 removed. FIG. 2A is a front view. FIG. 2B is a perspective view of the power conditioner 10 viewed from below. FIG. 3 is a rear view showing the configuration of the lid body 12 and the packing 13. FIG. 5 is a rear view showing the configuration of the lid body 12 and the packing 13 at the corner of the lid body 12 shown in FIG. In the present application, the front side may be referred to as the front side and the back side may be referred to as the rear side.

  As shown in FIGS. 1 to 5, the power conditioner 10 includes a substantially rectangular parallelepiped casing 11, a lid body 12, and a packing 13 that seals between the casing 11 and the lid body 12.

  The housing 11 accommodates various electrical components inside, and is provided with a fan, a heat radiating plate, and the like on the outside rear surface. The housing 11 includes a substantially square opening 20 on the front side and a substantially square flange 21 extending outward from the opening 20. The housing 11 is made of metal and is formed by drawing. For this reason, the opening part 20 of the housing | casing 11 is curving in four corners. In addition, holes 23 are provided in the four corners 22 of the flange portion 21.

  The lid body 12 is a substantially square plate-like member that covers the opening 20 and the flange portion 21 of the housing 11. Holes 30 are provided at four corners of the lid body 12. The lid 12 can be attached to the housing 11 with bolts 14 and nuts 15.

  The packing 13 is provided between the lid 12 and the flange portion 21 of the housing 11. The packing 13 is an elastic member formed of rubber or the like. The packing 13 has a shape corresponding to the opening 20 of the housing 11, and has a size that is much larger than the opening 20. Therefore, the packing 13 has a curved portion that is curved at the corner portion 22 of the flange portion 21, and has a straight portion that is linear in other portions.

  In the present embodiment, the packing 13 includes four string members 40 to 43, and the adjacent string members 40 to 43 are joined at the corner 22 of the flange portion 21. That is, the joint portion 44 of the packing 13 is located at the curved portion.

  As a result, as described above, the joint portion 44 of the packing 13 can be in close contact with the flange portion 21, and rainwater or the like hardly enters at the joint portion 44 of the packing 13. In addition, the packing 13 has a shape corresponding to the opening 20 of the housing 11, and rainwater or the like is more difficult to enter at the joint portion 44 of the packing 13.

  The upper and lower string-like members 40 and 42 have the same shape, and the left and right string-like members 41 and 43 have the same shape. That is, in this embodiment, since it is only necessary to generate two types of string-like members, productivity is improved.

(How to assemble the inverter)
The power conditioner 10 having the above configuration is assembled as follows. That is, first, an electrical component is accommodated in the housing 11. A packing 13 is attached to the back surface of the lid 12. In addition, the surface to which the packing 13 is attached in the cover body 12 is a flat surface.

  Next, the lid body 12 is attached so as to cover the opening 20 and the flange portion 21 of the housing 11. In addition, the surface which the packing 13 contacts in the flange part 21 is a flat surface. Then, the bolt 14 is passed through the hole 30 of the lid 12 and the hole 23 of the housing 11, and the nut 15 is screwed into the penetrated bolt 14, whereby the lid 12 is fastened to the housing 11. . Therefore, the joining portion 44 of the packing 13 can be in good contact with the lid 12 and the flange portion 21 of the housing 11, and rainwater and the like are less likely to enter the joining portion 44 of the packing 13. A spacer for preventing the packing 13 from being crushed is preferably provided between the housing 11 and the lid body 12.

(Modification)
6 to 9 are rear views similar to FIG. 5, and are diagrams showing modifications of the joint portion 44 of the packing 13.

  In the above embodiment, as shown in FIG. 5, the joint portion 44 between the string-like members 40 and 41 includes two joint surfaces 44 a and 44 b parallel to the diagonal line D, and one joint surface 44 c perpendicular to the diagonal line D. The joint surface 44c intersects the diagonal line D perpendicularly.

  On the other hand, in the example of FIG. 6, the joint portion 44 has one joint surface 44 d parallel to the diagonal line D, and the joint surface 44 d includes the direction of the diagonal line D. In the example of FIG. 7, the joint portion 44 has three joint surfaces 44e to 44g parallel to the diagonal line D and two joint surfaces 44h and 44i perpendicular to the diagonal line D. The joint surfaces 44e and 44g are , Including the direction of the diagonal D.

  In the example of FIG. 8, the joint portion 44 has three joint surfaces 44j to 44l parallel to the diagonal line D and two joint surfaces 44m and 44n perpendicular to the diagonal line D. The joint surface 44k is a diagonal line. The direction of D is included. In the example of FIG. 9, the joint portion 44 has a joint surface 44 o that intersects the diagonal line D.

  By the way, the corner portion 22 of the flange portion 21 is most difficult to be inclined even if the position including the diagonal line D between the corner portions 22 is adjusted by drawing. Therefore, it is desirable that the joint portion 44 has a joint surface including the direction of the diagonal line D as shown in FIGS. 6, 7, and 8, or a joint surface that intersects the diagonal line D as shown in FIGS. . In this case, the joint portion 44 of the packing 13 can be further adhered to the flange portion 21, and rainwater or the like is less likely to enter the joint portion 44 of the packing 13.

  Further, as shown in FIGS. 5, 7, and 8, the joint portion 44 has a joint surface parallel to the diagonal line D, or a joint surface including the direction of the diagonal line D, and a joint surface perpendicular to the diagonal line D. Is more desirable. In this case, since the gap on the joint surface parallel to the diagonal line D or the joint surface including the direction of the diagonal line D and the gap on the joint surface perpendicular to the diagonal line D are substantially perpendicular, rainwater or the like that has entered one gap It becomes difficult to enter the other gap. As a result, rainwater or the like becomes more difficult to enter.

  Note that the joint surface including the direction of the diagonal line D may be a joint surface including a direction inclined to some extent from the diagonal line. The inclination may be about ± 15 degrees from the diagonal D, more preferably about ± 10 degrees from the diagonal D, and most preferably about ± 5 degrees from the diagonal D.

(Additional notes)
In the said embodiment, although the four string-like members 40-43 have joined the packing 13 in the four corners 22, it is not limited to this. In the packing 13, two string-like members may be joined at two corners 22, or three string-like members may be joined at three corners 22.

  In the said embodiment, although this invention is applied to the power conditioner 10, it is not limited to this. The present invention can be applied to any electrical device that includes a housing that houses electrical components and a lid that covers the opening of the housing.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.

10 Power conditioner (electric equipment)
DESCRIPTION OF SYMBOLS 11 Housing | casing 12 Cover body 13 Packing 14 Bolt 15 Nut 20 Opening part 21 Flange part 22 Corner part 23, 30 Hole part 40-43 String-like member 44 Joining part 44a-44o Joining surface D Diagonal line

Claims (5)

A rectangular housing that accommodates electrical components, the housing comprising an opening and a rectangular flange extending outward from the opening;
A lid that covers the opening and the flange of the housing and is attached to the flange of the housing;
An electrical device comprising a packing provided between a flange portion of the housing and the lid,
The housing is formed by drawing,
The packing is obtained by connecting a plurality of string-like members at a joint portion,
The electric device according to claim 1, wherein the joint portion is located at a corner of the flange portion.   The electric device according to claim 1, wherein the lid is fastened by a flange portion of the housing.   The electric device according to claim 1, wherein the joint portion has a joint surface including a direction of a diagonal line between corners of the flange portion, or a joint surface that intersects the diagonal line.   The joint portion includes a joint surface parallel to a diagonal line between corners of the flange portion, or a joint surface including a direction of the diagonal line, and a joint surface perpendicular to the diagonal line. 2. The electric device according to 2.   The electric device according to any one of claims 1 to 4, wherein the packing includes a bending portion that is bent at a corner portion of the flange portion.

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