JPS609197B2 - Door frame corner joint structure - Google Patents

Description

[Detailed description of the invention] The present invention relates to a door frame joint structure.

Conventional steel door frames are made by cutting, notching, and bending the vertical frame, upper frame, and lower frame separately.
The method was to weld the corners together.

According to this method, 1. Since the parts are processed separately, errors are likely to occur during assembly due to variations in processing; 2.
There were drawbacks such as the difficulty of post-processing such as welding or sanding.

The present invention was invented to solve the above problems, and embodiments thereof will be described below with reference to the accompanying drawings. Referring to FIG. 5, 1 is a vertical frame constituting the door frame, 2 is an upper frame, and 34 is a lower frame.

The present invention relates to a novel method for joining the joint portion between the vertical frame 1 and the upper frame 2 or lower frame 3. In the following description, the joint between the vertical frame and the upper frame (FIG. 5A) will be explained.
The upper end 4 of the vertical frame 1 is cut into 450 pieces.

The end 5 of the upper frame 2 is also cut at 45o. 6 is a hanging shaft made of a round bar (or flat bar) attached by welding to the lower part of the vertical frame 1 (from the upper end 4), and is attached between the flanges 4a formed on the back side of the vertical frame 1. There is.

7 is also a hanging shaft made of round birch or flat bar, and the flanges 7a, 7a in the retracted position from the end 5 of the upper frame
It is welded to the part.

8 is a corner fitting, L-shaped, with flanges 10 on both sides.
This part is the inner side groove 11 (of the vertical frame 1 and upper frame 2).
(Fig. 3).

Reference numeral 9 denotes a cylindrical concave surface provided at the center of the bent portion of the corner fitting 8, and a bolt 13 fitted to a clasp fitting 12, which will be described later.
The tip touches this concave surface.

The fastening fitting 12 has a J-shaped cross section, and has hooks 14 on both sleeves.
14, and a nut 15 is fixed at the center of the top.

A tightening bolt 13 is screwed into the nut 15. With the above configuration, the door frame is manufactured through the following steps.

i Vertical frame 1 and upper frame 2 (
Or cut the end of the bottom frame to 45o.

ii. Weld the hook shafts 6 and 7 to the inner surface of the flange at a position recessed from each end. iii. Align the vertical frame 1 and the upper frame 2 using the corner fittings 8 as guides, and make their ends face each other.

In this case, the middle dimension a of the corner fitting 8 is set to be a little tighter than the inner dimension b of the frame material (a>b). iv
The hooks 14, 14 of the tightening fitting 12 are hooked onto the hook shafts 6, 7. v Tighten bolt 13.

By attaching the bolts 13, the vertical frame 1 and the upper frame 2 are guided by the outer surface of the flange 10 on the corner metal fittings 8 which are pulled toward each corner, so that they are accurately joined without shifting. As described above, according to the present invention, "a) Since welding is not used to join the frame materials, joining can be easily performed and no skill is required.

b. Since it is not a welded finish, sanding is not required and workability is extremely good.

c Easy to assemble on site.

Therefore, shipping by knockdown method is possible. d
Since corner fittings 8 are used, the joints match perfectly and the finish is beautiful.

e Since it is not a welded structure, decorative steel plates and painted steel plates can be used.

f The entire frame can be provided at low cost because the assembly work is easy and the knock-down type is possible.

g Easy assembly using L-shaped corner fittings and tightening fittings that do not require particular manufacturing precision.

Then, the entire right-angled inner surface of the corner fitting is immediately inscribed in both frame members, and the frame can be assembled while regulating the corner end portions of the frame to an accurate right-angled state. Therefore, it is possible to easily assemble the outside of the frame at the same time without any deviation occurring when abutting.

[Brief explanation of the drawing]

Figure 1 is an exploded perspective view of the main parts of the door frame, Figure 2 is a vertical cross-sectional view of the corner, Figure 3 is a cross-sectional view of the upper frame, Figure 4 is a perspective view of the corner fittings, Figure 5 is a perspective view of the door frame. Front view of. In the figure: -, 1... Vertical frame, 2... Upper frame, 3
・...−・Bottom frame, 4... End (of vertical frame), 5...
End (of the upper frame), 6, 7... Hanging shaft, 8... Corner fitting, 9... Concave surface, 10... Flange,
11. ．． ...(Inside of frame material) Side groove, 12...Tightening metal fitting, 13...Bolt L 14...Hook, 15...
…nut. 1st leg 2nd leg 3rd brother Mukaku figure 5

Claims (1)

[Claims] 1 The cross section is ■-shaped, the joint end is cut at 45°,
A vertical frame 1 and an upper frame 2 each having a hook shaft 6 on the inner back surface slightly from the joint end, and a perpendicular frame that is inserted into the inner groove 11 of the vertical frame and the upper frame from the joint end of the vertical frame and the upper frame. flange part 10
and an L-shaped corner fitting 8 having a concave surface 9 at the bent top.
A fastening metal fitting having a ■-shaped cross section, which is attached from the outside of the joint end, has hooks 14 on both sleeves that engage with the hook shaft 6, and has a nut 15 screwed with a bolt 13 at the center of the top. 12, the door frame corner joining structure is characterized in that the vertical frame and the upper frame are joined by screwing the bolt 13 of the fastening metal fitting 12 into the top concave surface 9 of the corner metal fitting 8.