JP6064626B2 - Cold-rolled plate with steps, front plate for outdoor equipment and manufacturing method thereof - Google Patents

Description

  The present invention relates to a cold-rolled plate with a step and a front plate that is a component of a casing of an outdoor unit and a method for manufacturing the same.

  Conventionally, a housing of an outdoor unit such as an air conditioner has a U-shaped front plate (including left and right side plates; the same applies hereinafter) so as to form an upper opening, a rear opening, and a bottom opening. Further, a top plate that closes the top opening, a back plate that closes the back opening, and a bottom plate that closes the bottom opening are mounted.

  Usually, a step is provided on the upper part of the front plate to define an upper end portion on which the top plate is mounted, but a notch is formed in a corner portion of the upper end portion (see Patent Documents 1 to 10).

  FIG. 1 shows a basic structure of a conventional front plate. FIG. 1A shows a case where a simple notch 1b is formed at the corner of the upper end 1a of the front plate 1 having the step 1c. FIG. 1B shows the front plate 1 having the step 1c. The case where the corrugated side surface is formed in the corner | angular part of the upper end part 1a, and the notch 1b is formed on it is shown.

  The notch 1b formed at the corner of the upper end portion 1a of the front plate 1 prevents the constriction or “wrinkle” from occurring at the corner when the front plate 1 having the step 1c is bent into a U shape. Is formed.

  Normally, increasing the notch can prevent the occurrence of “necking” and “wrinkles”, but when the top plate is attached to the upper end of the front plate, the confidentiality between the top plate and the corners of the upper end As a result, rainwater and the like easily enter the outdoor unit.

JP 2005-233552 A JP 2006-258326 A JP 2007-111381 A JP 2009-1000063 A JP 2009-138951 A JP 2009-174760 A JP 2010-066872 A JP 2010-144965 A JP 2010-175090 A JP 2010-185640 A

  “Constriction” and “wrinkle” generated at the corner of the upper end of the front plate will be described in detail.

  In FIG. 2, the aspect of the corner | angular part of the upper end part of the front plate which has a level | step difference is shown. There is a “neck 2” at the top of the corner.

  In order to prevent the occurrence of “necking”, a notch is formed at the upper end of the front base plate, which is a corner, in a cold-rolled stepped plate (hereinafter referred to as “front base plate”) before bending. (Refer to FIG. 6 described later) and the front base plate is bent, but wrinkles may occur on the side surfaces of the corners.

  In FIG. 3, the aspect of the front base plate before giving a bending process and the aspect of the corner | angular part of the front board manufactured by giving a bending process are shown. FIG. 3A shows an aspect of the front base plate before bending processing, and FIG. 3B shows an aspect of the corner portion of the front plate manufactured by bending processing.

On top of the step 1c of the front element plate 1 'of the corner portion, provided Kaname Tokoro dimensions of the notch 1b (FIG. 3 (a), reference), subjected to bending process, when manufacturing the front plate 1, As shown in FIG. 3B, in the corner portion, even though the occurrence of “necking” can be prevented by the presence of the notch 1b, “wrinkle” 3 may occur on the side surface.

  FIG. 4 shows an example of a technique for preventing the occurrence of “wrinkles” on the side surfaces of the corners. FIG. 4A shows an example in which longitudinal embossed beads are formed on the side surfaces of the corners, and FIG. 4B shows an example in which dimples are formed on the side surfaces of the corners.

  As shown in FIG. 4, the occurrence of “wrinkles” on the side surface of the corner portion forms a vertical emboss on the side surface of the corner portion (see FIG. 4A) or forms a dimple (see FIG. 4). 4 (b), can be prevented.

  However, when the vertical embossed bead is formed on the side surface of the corner, or when the dimple is formed, when the top plate is attached to the upper end of the front plate, the confidentiality between the corner and the top plate is reduced. Rainwater and the like can easily enter the outdoor unit.

  In other words, in the prior art, (i) if the notch formed at the upper end of the corner is enlarged, the occurrence of “necking” can be prevented, but “wrinkle” occurs on the side surface of the corner, (ii) “wrinkle” In order to prevent the occurrence of "", the formation of unevenness such as longitudinal emboss beads or dimples on the side surfaces of the corners causes a problem that the confidentiality between the corners and the top plate is lowered.

  In view of the above-described problems of the prior art, the present invention (I) prevents the occurrence of “necking” and “wrinkle” at the corners when a front plate is produced by bending the front plate. And (II) When the top plate is attached to the upper end of the front plate, it is an object to maintain good confidentiality between the corner and the top plate, and a front plate and a method for manufacturing the same are provided. The purpose is to do.

  The present inventors diligently studied a method for solving the above problems. As a result, the present inventors have found the following knowledge.

  When manufacturing a front plate by bending the front base plate into a U-shape, forming a concave embossed bead parallel to the step (laterally) on the side surface of the upper end of the top plate, a) The occurrence of “wrinkles” can be prevented, (b) the occurrence of “necking” can be prevented even if the notch is reduced, and (c) the secrecy between the corners and the top plate is reduced. It can be maintained well.

This invention was made | formed based on the said knowledge, and the summary is as follows.
( 1 ) In the front plate that constitutes the casing for the outdoor unit by attaching a top plate to the upper end portion divided by steps, the corner portion of the upper end portion has a notch at the upper end and is parallel to the step on the side surface. A front plate for outdoor equipment, comprising two or more concave embossed beads.
( 2 ) The front plate for outdoor equipment according to ( 1), wherein the cold rolled plate or the front plate is a steel plate.
( 3 ) In a method for manufacturing a front plate that constitutes a casing for outdoor equipment by attaching a top plate to an upper end section divided by steps, the upper end portion to which the top plate is mounted is bent into a front base plate divided by steps. When manufacturing the front plate with processing,
(X) forming a notch in the end face of the upper end that becomes a corner,
(Y) On the upper end portion having the notch, a corner portion is formed by pressing a mold having two or more concave grooves parallel to the step,
(Z) A method for producing a front plate for an outdoor device, wherein two or more concave embossed beads parallel to the step are formed on the side surface of the corner portion.
( 4 ) The method for producing a front plate for outdoor equipment according to ( 3 ), wherein the front base plate is a steel plate.

  According to the present invention, when manufacturing a front plate by bending the front base plate, it is possible to prevent the occurrence of “necking” and “wrinkle” at the corners, and the top plate at the upper end of the front plate. When the is attached, the confidentiality between the corner and the top plate can be maintained well.

It is a figure which shows the conventional structure of a front plate. (A) shows the case where the simple notch 1b is formed in the corner | angular part of the upper end part 1a of the front plate 1 which has the level | step difference 1c, (b) shows the upper end part 1a of the front plate 1 which has the level | step difference 1c. The case where the side surface of uneven | corrugated shape is formed in the corner | angular part at the vertical direction, and the notch 1b is formed on it is shown. It is a figure which shows the aspect of the corner | angular part of the upper end part of the front plate which has a level | step difference. It is a figure which shows the aspect of the front base plate before giving a bending process, and the aspect of the corner | angular part of the front board manufactured by giving a bending process. (A) shows the aspect of the front base plate before performing a bending process, (b) shows the aspect of the corner | angular part of the front board manufactured by giving a bending process. It is a figure which shows the example of the method of preventing that a "wrinkle" generate | occur | produces on the side surface of a corner | angular part. (A) shows the example which forms a vertical direction emboss bead in the side surface of a corner | angular part, (b) shows the example which forms a dimple in the side surface of a corner | angular part. It is a figure which shows the aspect of the corner | angular part of the front plate for outdoor devices of this invention. (A) shows an aspect in which the corner of the upper end section divided by a step has a notch of a required shape at the top, and has three concave emboss beads (in the lateral direction) parallel to the step on the side surface. b) shows a mode in which the corner portion of the upper end section divided by the step has a notch of another shape at the top, and three concave emboss beads (laterally) parallel to the step are provided on the side surface. It is a figure which shows the notch formed in the end surface of the front-surface base plate which divided the upper end part which mounts a top plate in a level | step difference, and the upper end part used as a corner | angular part. (A) shows an aspect of the front base plate in which the upper end portion on which the top plate is mounted is divided by a step, (b) shows a notch of a required shape formed on the end surface of the upper end portion that becomes a corner, (C) shows the notch of another shape formed in the end surface of the said upper end part used as a corner | angular part. It is a figure which shows the front board manufactured in the Example.

  The present invention will be described below.

  The front plate for outdoor equipment of the present invention (hereinafter also referred to as “the front plate of the present invention”) is a front plate that constitutes a casing for an outdoor unit by attaching a top plate to an upper end section divided by steps. The corner portion of the upper end portion has a notch at the upper end, and has two or more concave embossed beads parallel to the step on the side surface.

The method for manufacturing a front plate for an outdoor device according to the present invention (hereinafter sometimes referred to as “the method for manufacturing the present invention”) is performed before a top plate is attached to the upper end portion divided by steps to constitute a casing for an outdoor device. In the manufacturing method of the face plate, when manufacturing the front plate by subjecting the front base plate to which the top plate to which the top plate is attached is divided into steps,
(X) forming a notch in the end face of the upper end that becomes a corner,
(Y) On the upper end portion having the notch, a corner portion is formed by pressing a mold having two or more concave grooves parallel to the step,
(Z) Two or more concave embossed beads parallel to the step are formed on the side surface of the corner.

  Hereinafter, description will be given based on the drawings.

The front plate of the present invention is a front plate that does not have “necking” and “wrinkle” at the corners and has good secrecy between the corners and the top plate.

  In FIG. 5, the aspect of the corner | angular part of this invention front board is shown. FIG. 5A shows a mode in which the corner portion of the upper end 1a divided by the step 1c has a notch 1b at the top, and three concave embossed beads 6 parallel to the step (lateral direction) on the side surface. 5B, the corner portion of the upper end portion 1a divided by the step 1c has a notch 1b having a different shape at the top portion, and 3 side concave embossed beads 6 parallel to the step (lateral direction) are provided on the side surface. The aspect provided with this is shown.

  Normally, if the notch is small, “necking” is likely to occur (see FIG. 2). However, in the front plate of the present invention, the corner portion is provided with a concave embossing bead parallel to the step (laterally) on the side surface. Therefore, even if the notch is small (see FIG. 5B), “necking” does not occur. That is, in the front plate of the present invention, the cutout can be minimized as long as “necking” does not occur.

  The reason why "necking" does not occur even if the notch shape is small is provided with a concave embossed bead parallel to the step (in the lateral direction). This is considered to be because "" can be absorbed by the concave embossed beads.

  Further, in the front plate of the present invention, the corner portion is provided with a concave embossed bead parallel to the step on the side surface. Therefore, when the top plate is attached to the upper end portion, rainwater or the like is not attached to the outdoor unit. It becomes difficult to enter the inside, and the secrecy between the corner and the top plate can be maintained well.

  FIG. 5 shows a mode in which three concave embossed beads (laterally) parallel to the step are provided on the side surface of the corner, but the number of the concave embossed beads prevents occurrence of “wrinkles” And as long as the confidentiality with a top plate can be maintained, it should just set suitably in the range of 2 or more.

  The front plate of the present invention is a front plate constituting a housing for an outdoor device such as an air conditioner, a vending machine, a gas water heater. Moreover, the housing | casing comprised by this invention front plate can be used as a storeroom as it is. Therefore, since the front plate of the present invention requires a required strength, a steel front plate is preferable.

  Since the front plate of the present invention is for outdoor equipment, a plated steel plate or a pre-coated steel plate is preferred from the viewpoint of corrosion resistance and aesthetics.

  Next, the manufacturing method of the present invention will be described.

  FIG. 6 shows a front base plate in which an upper end portion on which the top plate is mounted is divided by a step, and a notch formed on an end surface of the upper end portion of the front plate that becomes a corner portion. FIG. 6 (a) shows one aspect of the front base plate in which the upper end portion on which the top plate is mounted is divided by steps, and FIG. 6 (b) shows the notch formed on the end surface of the upper end portion which becomes a corner portion, FIG. 6C shows another shape of notch formed on the end face of the upper end that becomes the corner.

  In the front base plate formed by dividing the upper end portion on which the top plate is mounted by a step, as shown in FIG. 6 (a), for example, as shown in FIG. A rectangular notch 1a having a width of 25 mm and a depth of 7.0 mm is formed.

  As described above, in the front plate of the present invention, the cutout can be minimized as long as “necking” does not occur. Therefore, the cutout has a width of 25 mm as shown in FIG. 6C, for example. An inverted trapezoidal shape with a depth of 4.7 mm may be used.

  When manufacturing a front plate by bending a front base plate having a notch formed in the upper end portion for mounting the top plate, a die having two or more concave grooves parallel to the step is formed on the upper end portion having the notch. Press to form corners.

  As a result, it is possible to manufacture the front plate of the present invention having no constriction in the notch and having two or more concave embossed beads parallel to the step on the side surfaces of the corners.

  Next, examples of the present invention will be described. The conditions in the examples are one example of conditions used for confirming the feasibility and effects of the present invention, and the present invention is based on this one example of conditions. It is not limited. The present invention can adopt various conditions as long as the object of the present invention is achieved without departing from the gist of the present invention.

Example 1
A front plate having a plate thickness of 0.8 mm × 400 mm × 200 mm formed by dividing the upper end 30 mm on which the top plate is mounted by a step was bent to produce a front plate. An inverted trapezoidal notch (see FIG. 6C) having a width of 25 mm and a depth of 4.7 mm is formed on the end surface of the upper end that becomes a corner, and the upper end having the notch is parallel to the step. A corner portion was formed by pressing a mold having three concave grooves, and three concave embossed beads parallel to the step were formed on the side surface of the corner portion.

  FIG. 7 shows a front plate manufactured by the manufacturing method of the present invention. As shown in FIG. 7, there is no “neck” in the notch at the top of the corner. When a top plate was attached to the upper end of the front plate and an exposure test was carried out outdoors, the upper end of the front plate and the top plate had good confidentiality, and no water penetration was observed.

  As described above, according to the present invention, when manufacturing the front plate by bending the front base plate, it is possible to prevent the occurrence of “necking” and “wrinkle” at the corners, and When the top plate is attached to the upper end, the confidentiality between the corner and the top plate can be maintained well. Thus, the present invention has high applicability in the metal processing industry.

DESCRIPTION OF SYMBOLS 1 Front plate 1 'Front base plate 1a Upper end 1b Notch 1c Step 2 Constriction 3 Wrinkle 4 Longitudinal emboss bead 5 Dimple 6 Concave emboss bead

Claims (4)

  In the front plate that constitutes the casing for the outdoor unit by attaching a top plate to the upper end section divided by the step, the corner of the upper end has a notch at the upper end, and a concave emboss on the side surface that is parallel to the step A front plate for outdoor equipment comprising two or more beads. The front plate for outdoor equipment according to claim 1, wherein the cold rolled plate or the front plate is a steel plate. In the manufacturing method of the front plate that forms the housing for outdoor equipment by attaching the top plate to the upper end part divided by the step, the front base plate divided by the step is subjected to bending processing. When manufacturing the front plate
(X) forming a notch in the end face of the upper end that becomes a corner,
(Y) On the upper end portion having the notch, a corner portion is formed by pressing a mold having two or more concave grooves parallel to the step,
(Z) A method for producing a front plate for an outdoor device, wherein two or more concave embossed beads parallel to the step are formed on the side surface of the corner portion. The said front base plate is a steel plate, The manufacturing method of the front plate for outdoor devices of Claim 3 characterized by the above-mentioned.