JP2000316651A - Sheet metal drawer and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a low-cost sheet metal drawer, connections of which do not require welding when bent and in which no screws are used at all to assemble, and a manufacturing method therefor. SOLUTION: In a sheet metal drawer furnished with a case 5 into which a drawer 7 is inserted, on a base 3, claws that can be bent with fingers are provided at the bottom of the case, engagement holes to be engaged with the claws are provided on the base, engagement holes that engage with claws that can be bent by fingers of another case of the same structure as the case are provided on the top face of the case, and the base and the case are connected and fixed by the claws. A necessary number of cases of the same structure are provided in the upper portion of the case.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet metal drawer and a method for manufacturing the same.

[0002]

2. Description of the Related Art For example, a sheet metal drawer in which a drawer component is composed of a plurality of parts such as a case, a drawer, and a base is manufactured by punching or laser processing a sheet metal material cut into an appropriate size for each part. The part is completed by cutting it into a developed shape with a machine, etc., then bending it with a bending machine, and welding the joint so that the joint at the time of bending is not opened by springback . Then
The parts are assembled to complete the product.

[0003]

In the manufacture of the above-mentioned conventional sheet metal drawer, a shearing machine such as a shearing machine, a cutting machine such as a punch press or a laser machine, and a bending machine are basically required. It is. Further, a welding machine for welding a joint at the time of bending is required.
If "screws" or bolts are used for assembly, fastening tools are also required.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to eliminate the necessity of welding a joint at the time of bending, and to use no "screw" for assembly. An object of the present invention is to provide a low-cost sheet metal drawer that is not used and a method of manufacturing the same.

[0005]

According to a first aspect of the present invention, there is provided a sheet metal drawer provided with a case for inserting the drawer on a base. A claw that can be bent by a finger, and an engaging hole that engages with the claw is provided on the base, and a claw that can be bent with fingers of another case having the same configuration as the case is provided on the upper surface of the case. The invention is characterized in that an engaging hole for engaging with the base is provided, the base and the case are connected and fixed by the claws, and a required number of cases having the same configuration as the case are provided on the upper surface of the case.

According to a second aspect of the present invention, in the sheet metal drawer according to the first aspect, the case is provided with a key-shaped hook on one of adjacent side walls orthogonal to each other in the case, and the other is provided with a key-shaped hook. The invention is characterized in that an engaging portion that engages with the hook is provided on the side wall, and the engaging portion and the hook are engaged.

According to a third aspect of the present invention, there is provided a drawer made of sheet metal according to the first aspect of the present invention, wherein a pressing claw for preventing a side wall joint from opening is provided on left and right side walls of the drawer sliding in the case. It is the gist of the provision.

According to a fourth aspect of the present invention, there is provided a method for manufacturing a sheet metal drawer, comprising: a base, a drawer, a case into which the drawer is inserted;
In the method of manufacturing a sheet metal drawer, a nail that can be bent by a finger is provided at the bottom of the case, and an engaging hole that engages with the nail is provided on the base. An engaging hole for engaging a bendable claw of another case having the same configuration is provided, the claw is bent by a finger to connect and fix the base and the case, and the same as the case on the case upper surface. The gist of the invention is to connect and fix the required number of stages of the configuration.

According to a fifth aspect of the present invention, there is provided a method of manufacturing a sheet metal drawer according to the fourth aspect, wherein the case has a key-like shape on one of adjacent side walls orthogonal to the case. The gist of the present invention is that a hook is provided, and an engaging portion for engaging with the hook is provided on the other side wall, and the engaging portion is engaged with the hook.

According to a sixth aspect of the present invention, there is provided a method of manufacturing a sheet metal drawer according to the fourth aspect of the present invention, wherein a side wall joint is formed between left and right side walls of the drawer sliding in the case. The gist of the present invention is to provide a holding claw for preventing the above.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a sheet metal drawer 1 according to the present invention.
In this figure, the case 5 is mounted on the base 3 and the drawer 7 is mounted on the case 5 so as to be able to enter and exit.

FIG. 2 is a perspective view of the base 3 formed by bending the blank 8 with a bending machine, and FIG. 3 shows the bending blank 8 manufactured based on a developed view of the base 3. It is a thing.

The above-described base 3 is formed in a rectangular box having an open back surface, and has an upper surface 9, side walls 11 (A, B) and 1
3 (A, B) and a folded portion 15 bent inside the bottom surface
(A, B) and 17 (A, B). The upper surface 9 is provided with four mounting holes 19 for mounting a case 5 described later.

FIG. 4 is a perspective view of the case 5 formed by bending the blank 20 with a bending machine. FIG. 5 shows a folding blank 20 manufactured based on the development of the case 5.
It is shown.

The case 5 serves to guide the drawer 7 in a state where the drawer 7 is mounted on the base 3 described above. The side wall 25 is a dead end surface.
A bottom portion 29 that supports a bottom surface 49 of a drawer 7 described below is provided below the side wall 25.

A bottom portion 27 which is folded inward in parallel with the upper surface 21 from the lower portion of the longitudinal side walls 23 (A, B).
(A, B) is provided, and the inner edge of the bottom portion 27 (A, B) is further bent to form a support portion 31 for slidingly supporting the bottom surface 49 of the drawer 7.

Further, the bottom portion 27 (A, B) is formed with four claws 35 which can be easily bent by fingers. The claws 35 are provided in accordance with the positions of the four fixing holes 19 provided on the upper surface 9 of the base 3.

The bent claw can be bent more easily, for example, by providing a disposal hole 37 so as to reduce the cross section of the root of the claw as in the embodiment and lowering the bending strength.

As shown in FIG. 6, hooks 41 each having an L-shaped tip are provided at both corners below the side wall 25.
The hook 41 and the concave portion 39 provided in the support portion 31 are engaged with each other.

In order to engage the hook 41 and the concave portion 39, the side wall 25, the bottom 29, and the hook 41 are bent in this order, and then the support portion 31, the side walls 23 (A,
B) and the bottom 27 (A, B) are bent in this order. Further, the strength of the support portion 31 is reinforced by hemming.

Referring again to FIG. 4, the opening side (left side in FIG. 4) at which the drawer 7 enters and exits is provided with inward folds 33 and 43 by hemming to improve operational safety. In addition, the strength of the opening side edge is reinforced.

When a plurality of drawers 7 are provided,
Engagement hole 45 for fixing case 5 on top surface 21
Is provided. It is convenient to load the case 5 as a component if the claw 35 is not raised until it is used at the time of assembly.

With the above-described structure, the joining portion 47 between the side wall 25 and the side walls 23 (A, B) in the longitudinal direction is formed.
Opening of the mouth by springback can be suppressed by the engagement between the hook 41 and the recess 39.

FIG. 7 is a perspective view of a drawer 7 formed by bending a blank 70 with a bending machine. FIG. 8 shows a folding blank 70 manufactured based on the development of the drawer 7.
It is shown.

The drawer 7 is to be inserted into the case 5 described above, and the bottom surface 49 is provided on the support portion 31 of the case 5.
Slide on top. The drawer 7 has front, rear, left and right side walls 51 (A,
B), 53 (A, B) and a handle 59 are provided to prevent the joining joint 63 of the front, rear, left and right side walls 51 (A, B), 53 (A, B) from opening due to springback. Pressing claws 61 are provided on the left and right side walls 51 (A, B).

The upper edges of the left and right side walls 51 (A, B) and 53B are provided with inward folds 55 and 57 by hemming to improve operational safety and reinforce the strength of the side walls. I have.

The blanks of the base 3, the case 5, and the drawer 7 can be manufactured by using a punch press, a shearing and punch press, a laser processing machine, or the like.

The components such as the base 3, the case 5, and the drawer 7 manufactured by the bending machine are assembled as follows.

1. The nail 35 at the bottom of the case 5 is bent downward by the operator's hand and inserted into the mounting hole 19 on the upper surface 9 of the base 3 from above.

2. Next, the base 3 and the case 5 are put together and turned over, and the bending claw 35 protruding from the back side of the base is bent again by an operator's hand, and the base 3 and the case 5 are integrally fixed.

3. Then, the base 3 and the case 5 which are integrally fixed are turned upside down, and the drawer 7 is inserted into the case 5 to complete the drawer 1 made of sheet metal.

As described above, the assembling of the sheet metal drawer 1 is completed in three steps without using any assembling tools.

In the manufacture of the above-mentioned part of the sheet metal drawer 1, it is not necessary to weld the joint in order to prevent the opening of the joint at the time of bending by springback.

When a plurality of drawers are provided, an engagement hole 45 for overlapping and fixing the case 5 is provided on the upper surface 21 (top plate) of the case 5, but the upper surface of the case (top plate) ) Does not need to have this hole.

[0035]

According to the first to third aspects of the present invention, the drawer can be assembled without using any screws.
Further, the number of drawers can be easily changed by sharing parts. Further, since the welding for preventing the bent joint from opening due to the springback is not required, the manufacturing cost can be reduced.

According to the manufacturing method of claims 4 to 6,
The same effects as the first to third aspects of the invention can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an assembled state of a sheet metal drawer according to the present invention.

FIG. 2 is a perspective view of a base 3 which is one of the parts of the sheet metal drawer according to the present invention.

FIG. 3 is a view of a blank manufactured based on a developed view for bending the base 3 of FIG. 2;

FIG. 4 is a perspective view of a case 5, which is one of the parts of the sheet metal drawer according to the present invention.

FIG. 5 is a view of a blank manufactured based on the developed view of the case 5 shown in FIG. 4 for bending.

FIG. 6 is an enlarged explanatory view of a portion A in FIG. 4;

FIG. 7 is a perspective view of a drawer 7 which is one of the parts of the sheet metal drawer according to the present invention.

8 is a view of a blank manufactured based on the developed view for bending the drawer 7 of FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Drawer made of sheet metal 3 Base 5 Case 7 Drawer 8, 20, 70 Blank 9 Top surface 11 (A, B), 13 (A, B) Side wall 15 (A, B), 17 (A, B) Folding part 19 Mounting Hole 21 Top surface 23 (A, B), 25 Side wall 27 (A, B), 29 Bottom part 31 Support part 33, 55, 57 Fold 35 Nail 37 Discard hole 39 Depression 41 Hook 43 Fold 45 Engagement hole 47 Joint part 49 Bottom 51 (A, B), 53 (A, B) Side wall 59 Handle 61 Holding claw 63 Joint

Claims (6)

[Claims] 1. A sheet metal drawer having a case into which a drawer is inserted on a base, wherein a nail capable of being bent by a finger is provided at the bottom of the case, and the base is engaged with the nail. In addition to providing a hole, an engaging hole is provided on the upper surface of the case to engage a claw that can be bent by a finger of another case having the same configuration as the case, and the base and the case are connected and fixed by the claw. And a case having the same number of stages as the case is provided on the upper surface of the case. 2. The case, wherein a key-shaped hook is provided on one of adjacent side walls orthogonal to the case, and a concave portion is provided on the other side wall to be engaged with the hook. The sheet metal drawer according to claim 1, wherein the drawer is engaged. 3. The drawer made of sheet metal according to claim 1, wherein holding claws are provided on left and right side walls of the drawer sliding in the case to prevent opening of a side wall joint. 4. A method for manufacturing a sheet metal drawer, comprising: a base, a drawer, and a case into which the drawer is inserted.
The case bottom is provided with claws that can be bent with fingers, and the base is provided with an engagement hole that engages with the claws, and another case having the same configuration as the case is bent on the case upper surface. Providing an engagement hole for engaging with a possible claw, bending the claw with fingers to connect and fix the base and the case, and connecting and fixing a case having the same configuration as the case on the upper surface of the case to a required number of steps. Characteristic method of making drawers made of sheet metal. 5. The case, wherein a key-shaped hook is provided on one of adjacent side walls orthogonal to the case, and an engaging portion for engaging the hook is provided on the other side wall. The method for producing a sheet metal drawer according to claim 4, wherein the hook is engaged with the hook. 6. The method for manufacturing a sheet metal drawer according to claim 4, wherein holding claws are provided on left and right side walls of the drawer sliding in the case to prevent opening of a side wall joint.