JPS6037997Y2 - metal door - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a metal door such as a steel flush door, and particularly relates to an improvement of a metal door in which an appropriate number of reinforcing ribs are fixed between a pair of metal panels.

Conventionally, metal doors have been manufactured using iron plates of 0.5 to 1.0 mm, colored steel plates with baking paint applied to iron plates, PVC steel plates with resin coating, polyester steel plates, etc. A reinforcing rib with a U-shaped cross section was provided between the pair of metal panels, and the panels on both sides were sandwiched and pressurized with electrodes for spot welding, so finishing processes such as sanding and putty were required after welding. However, such finishing process is extremely time consuming and has the disadvantage that a good finished surface cannot be obtained.

For this reason, various methods have been proposed that do not require finishing, such as welding from the inside after door assembly to avoid leaving traces on the panel surface, or series spot welding (indirect spot welding) to join one panel and reinforcing ribs. This is done without leaving any traces on the surface of the panel, and welding leaves marks when joining other panels, so welding was used to avoid this, but both methods had poor workability. It was not suitable for mass production.

Therefore, an object of the present invention is to provide a metal door that does not leave any marks on the panel surface, can be easily constructed, and has a structure suitable for mass production.

The feature of the metal door according to the present invention is that each reinforcing rib installed between panels is composed of a pair of rib members, each rib member is welded to each panel, and the rib members are connected to each other with clips. This is what I decided to do.

Next, embodiments of the metal door according to the present invention will be described with reference to the drawings.

The metal door to which the present invention relates is usually constructed of steel and consists of a pair of panels 1 and 2 placed parallel to each other as shown.
and an appropriate number of reinforcing ribs 10 installed therebetween, and stile members are attached to both upper and lower ends and both side edges, respectively.

Generally, each reinforcing rib 10 is installed parallel to the longitudinal direction.

As clearly shown in FIG. 2, each rib 10 consists of a pair of rib members 11 and 12 that are in contact with each other, one rib member 11 is attached to one panel 1, and the other rib member 12 is attached to one panel 1. Welded to the other panel 2.

Indirect spot welding is used to weld each rib member 11, 12 to the panel, thereby securing the rib member to the panel without leaving any marks on the panel surface.

Each rib member is preferably a member having integral flange portions along both side edges, typically a tomoe-shaped or U-shaped member, and is welded to the respective panel at one of the flange portions 11a, 12a; And the other flange portion 11b is the other flange portion 12 of the corresponding rib member 12.
b comes into contact with each other.

A pair of opposing rib members 11 forming each reinforcing rib 10
．． 12 are connected to each other by clips 20 attached to their abutting flange portions at appropriate intervals.

Each clip 20 has a screw or rivet 2 as shown.
1 to one of the rib members, and is preferably made of a piece of sheet metal for a leaf spring, and is generally U-shaped with a flange portion 22 bent at right angles on one edge; It is fixed to the rib member at 22.

More preferably, the other edge 23 of the clip 20 is sloped outwardly, as shown in FIGS. 2 and 4, so that during assembly the flange portion 12b of the corresponding rib member
facilitates insertion.

It should be noted that the shape of the clip 20 need not be limited to the U-shape as in the illustrated embodiment, but it is clear that it can take other shapes depending on the cross-sectional shape of the rib members 11, 12.

To manufacture this metal door, first, clips 20 are attached to one rib member 11 at appropriate intervals so as to surround the flange portion 11b, and the rib member and the other rib member 12 are welded to their respective panels and integrated. .

Next, as shown in FIG. 2, one panel 2 to which the rib member is fixed is placed in a position shifted from the other panel 1 as shown by the imaginary line, and in that state, as shown in FIG. The flange portion 12b of the member 12 is offset from the flange portion 11b of the other rib member 11.

From this state, as shown by arrow 3 in FIG. are connected to each other by

Therefore, the metal door according to the present invention can be manufactured without leaving welding marks on the surface of each panel of the door, and has a structure that can be easily manufactured without requiring special skill, making it suitable for mass production. It has become.

[Brief explanation of drawings]

Figure 1 is a plan view of a metal door according to an example of the present invention;
1 is a partially omitted enlarged sectional view taken along line A-A in FIG. 1; FIG. 3 is a partially omitted enlarged sectional view taken along line B-B in FIG. 1; FIG. 4 is a partial sectional view showing the relationship between a pair of rib members immediately before assembly. In the figure, 1 and 2 are panels, 10 is a reinforcing rib, 11.12 is a rib member, llb, 12b is a flange part of the rib member,
20 indicates a clip.

Claims (3)

[Scope of utility model registration request] (1) A metal door including a pair of metal panels and an appropriate number of reinforcing ribs provided between the pair of panels,
Each of the ribs consists of a pair of rib members welded to each of the panels, each of the rib members abutting the corresponding rib member at an integrally provided flange portion, and furthermore, the ribs of the pair of opposing ribs The member is fixed to one of the rib members at appropriate intervals by clips,
A metal door characterized in that the metal doors are connected to each other at the flange portions thereof. (2) Utility Model Registration The metal door according to claim 1, wherein the clip is made of a thin plate and has a generally U-shape with a flange portion on one edge. (3) Utility model registration The metal door according to claim 2, wherein the other edge of the clip is inclined outward.