JPH0540721U - Drain pan - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the number of welding points and improve quality. [Structure] A side wrapper is provided on one end surface of a ship bottom-shaped pan body that inclines toward one end side, and drainage from the pan body is provided at the lowermost end of the side wrapper part that is an extension of the center fold line of the pan body. In a drain pan for receiving a drain drainage having a drain hole 5 flowing to the outside, a side wrapper piece 4 for folding and forming a side wrapper portion is integrally provided at one end portion of the pan body 3 before folding. The side wrapper piece 4 is formed with a V-shaped notch K1 on an extension of the central folding line L1 of the bread body 3 to form a central bread rising portion, and the four corner portions of the bread body 3 are
Notches K2 for forming the four corner pan rising portions are formed, the bread main body 3 is bent along the bending line into a ship bottom shape, and the side wrapper pieces 4 are bent and started with respect to the bread main body 3, and the central bread is raised. It is manufactured by welding the rising part and the four corner pan rising part.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a drain pan used as a receiver for drain drainage during defrosting in an air conditioner or the like.

[0002]

[Prior Art]

 Conventionally, drain pans for receiving drainage used in air conditioners have been manufactured by the following procedure.

First, as shown in FIG. 6, the material is cut by shirring to make a plate material that constitutes the pan body 11 and the left and right side wrappers 12, 12. Next, the plate materials of the side wrappers 12 and 12 are subjected to notch processing of the C1 and C2 portions using a small press. Then, the hole 13 for drainage is opened using a small press.

Next, as shown in FIG. 7, the plate material of the bread main body 11 and the plate materials of the left and right side wrappers 12 and 12 are bent along a bending line L11 to L15 using a press brake. Here, L11 is a central bending line for bending the bread body into a ship bottom shape, and L12 and L14 are bending lines for projecting the flange portion to the outer periphery. Further, L13 and L15 are bending lines for projecting a rising portion on the outer edge portion of the flange portion. FIG. 8 shows a sectional view taken along line BB.

Next, as shown in FIG. 9, the pan body 11 and the left and right side wrappers 12, 12 are connected by full welding to assemble a drain pan. In the figure, the Y11 part is the welded part.

[0006]

[Problems to be solved by the device]

 As described above, conventionally, the pan body 11 and the side wrappers 12 and 12 are separately manufactured, and these three parts are welded to assemble the drain pan, so that there is a problem that the welded portion Y11 becomes long. If the welded portion is long in this way, welding defects easily occur due to poor welding work, causing problems such as drainage of water from the defective portion.

The present invention has been proposed in order to solve such a problem, and an object thereof is to provide a drain pan capable of reducing the number of welding points and improving the quality.

[0008]

[Means for Solving the Problems]

 In order to achieve this object, the present invention provides a side wrapper part on one end surface part of a ship bottom-shaped pan body that inclines to one end side, which is an extension of the center fold line of the pan body. In the drain pan for drain drainage drainage, which has a drain hole for draining water from the pan body to the outside at the lower end, the side wrapper piece for forming the side wrapper part is bent at one end of the pan body before folding. Incorporated in one piece, this side wrapper piece has V-shaped notches formed on the extension of the center folding line of the bread body to form the center bread rising portion, and it is formed at the four corners of the bread body. Is formed with notches for forming the four-corner pan rising portion, the bread main body is bent along the folding line into a ship bottom shape, and the side wrapper pieces are bent to the bread main body to stand up, and It is fabricated by welding a rising portion and the four corners of the pan raised portion.

[0009]

[Action]

 According to the above-mentioned structure, since the drain pan can be manufactured by folding the side wrapper piece integrally provided in the pan body, the length of the welded portion is shortened.

[0010]

【Example】

 Hereinafter, a specific embodiment of the drain pan according to the present invention will be described in detail with reference to the drawings. FIG. 1 shows a developed cutaway view of this drain pan.

In this figure, a member 2 for making a drain pan made by cutting a raw material 1 is integrally provided with a bending piece 4 serving as a side wrapper part on one side of a rectangular pan body 3 part. Is equipped with.

A drainage hole 5 is formed in the bending piece 4 of the side trumpet portion on the extension of the central folding line L1 of the bread main body 3, that is, at the lowermost position of the side trumpet portion, and the draining hole 5 is continuously formed. A V-shaped cutout K1 is formed on an extension of the central folding line L1 to form a central pan rising portion. The bending piece 4 of the side trumpet portion is divided into front and rear bending pieces 4A and 4B with the V-shaped notch K1 as a boundary.

Further, notches K 2 for forming four-corner pan rising portions are formed at four corners of the bread main body 3, respectively.

In order to manufacture this member 2, for example, a laser beam machine is applied to the plate material 1 along a continuous cutting line X for cutting out the bread main body 3 and the bent piece 4 of the side wrapper part. Perform cutting processing.

As shown in FIG. 2, the drain pan manufacturing member 2 manufactured in this manner bends the bread main body 3 in a ship bottom shape along the center fold line L1 and the fold line L2 that raises the outer peripheral portion. Bending along the folding line L3 forms the flange portion 3b of the bread body 3. 3a is a rising portion on the outer circumference. The folding piece 4 is bent along the bending line L6 with respect to the bread main body 3 to raise the side trumpet portion 4a, and the flange portion 4b continuous with the folding side trumpet portion 4a is formed along the folding line L7. Note that the outer edge portions of the flange portions 3b and 4b are bent along the bending lines L4 and L8, so that the rising portions 3c and 4c are provided in a protruding manner. 3 is a sectional view taken along the line AA, and FIG. 4 is a side view. A computer-controlled numerical control (CNC) press brake is used for this bending.

After bending, as shown in FIG. 4, the central pan rising portion Y1 corresponding to the V-shaped cutout K1 and the four corner pan rising portions Y2 corresponding to the cutout K2 are connected by full welding. The boundary portions P1 and P2 of the flange portion are connected by spot welding. This assembles the drain pan.

[0017]

[Effect of the device]

 As described above, according to the present invention, since the drain pan is configured by the integral bending structure, the length of the welded portion is shortened and the welding defect is less likely to occur.

As a result, the number of manufacturing steps is reduced to nearly half that of the conventional method, and the production efficiency is significantly improved.

[Brief description of drawings]

FIG. 1 is a development view showing a member of a drain pan according to the present invention before being bent.

FIG. 2 is a perspective view showing a member after bending.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a side view of FIG.

FIG. 5 is a diagram showing welded portions.

FIG. 6 is a plan view showing a conventional component before manufacturing a drain pan.

7 is a perspective view showing the component of FIG. 5 after being bent.

8 is a cross-sectional view taken along line BB of FIG.

FIG. 9 is a view showing a welding portion of a conventional drain pan.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Material 2 ... One member before drain pan production 3 ... Bread main body 3a ... Rise part 3b, 4b ... Flange part 3c, 4c ... Rise part of outer edge part 4 ... Bending piece for side wrapper 4a ... Side wrapper part 5 ... Drainage hole K1 ... V-shaped notch K2 ... Notch L1 ... Center bending line L2, L3 L4, L6, L7, L8 ... Bending line Y1 ... All welded parts of center pan start-up part Y2 ... All welded parts of four corner pan start-up parts P1, P2 ... Spot weld part X ...・ Cutting line

Claims (1)

[Scope of utility model registration request] 1. A side trumpet portion is provided on one end surface portion of a ship bottom-shaped pan body that inclines toward one end side, and the side bottom portion of the side trumpet portion, which is an extension of the center fold line of the bread body, extends from the bread body. In a drain pan for receiving a drain and drainage, in which a drain hole for flowing drainage to the outside is formed, a side wrapper piece for bending and forming the side wrapper portion is integrally provided at one end of the pan body before folding,
A V-shaped notch is formed on an extension of the center folding line of the bread body to form the center bread rising portion on the side wrapper piece, and the bread body is shaped like a ship bottom along the center folding line. A drain pan that is manufactured by bending and standing up the side trumpet piece with respect to the bread body, and then welding the center pan rising part.