Welding-free detachable door frame

Abstract

The utility model discloses a welding-free detachable door frame which comprises an upper frame body, a left frame body, a lower frame body and a right frame body which are respectively provided with a front panel, a connecting plate and a rear panel which are sequentially connected, and the upper frame body, the left frame body, the lower frame body and the right frame body are sequentially encircled and connected through a detachable structure to form a rectangular frame structure. The connecting structure comprises extension plates arranged at the two ends of the two opposite connecting plates and first turnover plates which are arranged at the ends of the other two connecting plates and can be bent, and first inserting holes are formed in the extension plates. And after the four frames are encircled, the first turnover plate penetrates through the first insertion hole, extends to the other side of the first insertion hole and then is bent to be attached to the side wall of the first turnover plate so as to fasten the two connecting plates. The door frame is divided into the four frame bodies, the four frame bodies can be produced separately during production, the insertion holes and the turnover plates are arranged between the adjacent door frames, the turnover plates are inserted into the insertion holes and bent during installation, the turnover plates are pulled out of the insertion holes after being straightened during disassembly, and disassembly can be completed, so that the door frame is convenient to assemble and disassemble; the frame bodies can be manufactured through cutting, trepanning and edge folding, additional fasteners do not need to be arranged, the manufacturing process is simple, the production efficiency is high, and the cost is low.

Description

Technical Field

[0001] The utility model relates to a door frame, in particular to a welding-free detachable door frame. Background Art

[0002] The main function of the door frame is to fix the door leaf and protect the wall corners and decoration. The door frame plays an important role in architectural decoration. It is not only a structural element, but also has many practical and aesthetic functions.

[0003] At present, there are generally two types of door frames on the market. One is a rectangular frame formed by welding. This type of door frame cannot be disassembled, and the welding process has high requirements, low efficiency, and high cost. The other is a detachable rectangular frame fixed with fasteners such as screws. This type of structure requires screw holes to be opened and equipped with corresponding screws for fixing during manufacturing. It requires high processing accuracy and needs to be equipped with additional fixing parts, which increases the cost. In addition, tools are required for installation and disassembly, which is time-consuming and labor-intensive. Utility Model Content

[0004] Based on the shortcomings that the door frame in the prior art is fixed by welding, which increases the cost and is inefficient, and the structure fixed by fasteners requires processing screw holes and equipping fastening screws, which requires high processing precision and high cost, and installation and disassembly require the use of tools, which is inefficient, the utility model provides a welding-free detachable door frame.

[0005] The technical solution adopted by the present invention to solve the above technical problems is:

[0006] A welding-free detachable door frame includes an upper frame, a left frame, a lower frame and a right frame, each of which has a front panel, a connecting plate and a rear panel connected in sequence. The upper frame, the left frame, the lower frame and the right frame are sequentially enclosed and connected through a detachable structure to form a rectangular frame structure. The connecting structure includes an extension plate arranged at both ends of two opposite connecting plates and a bendable first flip plate arranged at the ends of the other two connecting plates. The extension plate is provided with a first socket. After the four frames are enclosed, the first flip plate passes through the first socket and extends to the other side of the first socket, then bends and abuts against the side wall of the first flip plate to fasten the two connecting plates.

[0007] Preferably, the front panel and the rear panel are both connected by a plate edge bent 90° twice to form an L-shaped structure with a first flange and a second flange. The left frame and the rear frame are defined as the first frame group, and the upper frame and the lower frame are defined as the second frame group. A notch is provided at the connection between the L-shaped structure of the front panel and the rear panel on one of the first frame group and the second frame group and the connecting plate of the frame group, and the front panel and the rear panel on the other frame group are respectively inserted into the two notches.

[0008] Preferably, the outer side walls of the front panel and the rear panel inserted into the notch are in contact with the inner wall surface of the first flange of the L-shaped structure of the frame assembly with the notch.

[0009] Preferably, the ends of the front panel and the rear panel inserted into the notch abut against the inner wall surface of the second flange of the L-shaped structure on the frame assembly with the notch.

[0010] Preferably, the ends of the front panel and the rear panel of the frame group inserted into the notch are provided with a bendable second flip plate, and the second flange of the L-shaped structure on the front panel and the rear panel of the frame group with the notch is provided with a second hole. After the four frames are enclosed, the second flip plate passes through the second hole and extends to the other side of the second hole, then bends and rests against the second flange of the L-shaped structure on the frame group with the notch to fasten the two connecting plates.

[0011] Preferably, the second insertion hole is arranged on the second flange edge of the L-shaped structure on the frame assembly with the notch, and is located at the connection between the second flange and the first flange.

[0012] Preferably, both ends of the front panel and the rear panel of the frame assembly with the notch are provided with bevel structures.

[0013] Preferably, at least one group of first jacks and first flip plates is provided. When multiple groups are provided, the flip directions of the first flip plates of two adjacent groups are opposite.

[0014] Preferably, in the left frame and the right frame, a support structure is provided between the front panel and the rear panel on the same frame, the support structure includes a third socket on the second flange of the L-shaped structure provided on the front panel and the rear panel on the above-mentioned same frame, and a support frame with both ends resting against the front panel and the rear panel on the above-mentioned same frame, a bendable third flip plate is provided at both ends of the support frame, the third flip plate passes through the third socket and is bent and rests on the second flange of the L-shaped structure of the front panel and the rear panel on the above-mentioned same frame.

[0015] Preferably, a limiting plate with an upward-opening notch is provided on the first flange of the L-shaped structure of the front panel and the rear panel on the same frame, and a reserved spacing is provided between the limiting plate and the third socket for inserting the third flip plate. An L-shaped hook is provided on the support frame, and the L-shaped hook extends into the notch of the limiting plate and is hooked on the limiting plate when the third flip plate is fixed.

[0016] Compared with the prior art, the advantages of the present invention are as follows: the present application divides the door frame into four frames, which can be produced separately during production. There are insertion holes and flip plates between adjacent door frames. When installing, you only need to insert the flip plate into the insertion hole and bend it to complete the installation. When disassembling, you only need to straighten the flip plate and pull it out of the insertion hole to complete the disassembly. The installation and disassembly are convenient. In addition, each frame can be manufactured by cutting, opening holes and folding edges, without the need for additional fasteners. The manufacturing process is simple, the production efficiency is high, and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and should not be construed as limiting the scope of the present invention. Furthermore, unless otherwise specified, the drawings are merely schematic representations of the composition or structure of the depicted objects and may contain exaggerated representations. Furthermore, the drawings are not necessarily drawn to scale.

[0018] Figure 1 A perspective view of this application;

[0019] Figure 2 This is an exploded view of the application;

[0020] Figure 3 A perspective view of this application;

[0021] Figure 4 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 5 for Figure 2 Enlarged view of point B in the middle;

[0023] Figure 6 for Figure 2 Enlarged view of point C in the middle;

[0024] Figure 7 for Figure 3 Enlarged view of point D in the middle;

[0025] In the figure: 10, rectangular frame structure; 101, upper frame; 102, left frame; 103, lower frame; 104, right frame; 201, front panel; 202, rear panel; 300, connecting plate; 3001, extension plate; 3002, first jack; 301, first flange; 3011, bevel structure; 302, second flange; 3021, second jack; 303, first flip plate; 304, second flip plate; 305, notch; 400, support frame; 4001, third flip plate; 4002, L-shaped hook; 402, third jack; 403, limit plate; 4031, notch. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0027] It should be noted that like reference numerals denote like items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0028] This embodiment mainly describes the topic of the welding-free detachable door frame, which is as follows:

[0029] Welding-free removable door frame, reference Figure 1-Figure 7 , including an upper frame 101, a left frame 102, a lower frame 103 and a right frame 104, each of which has a front panel 201, a connecting plate 300 and a rear panel 202 connected in sequence. The upper frame 101, the left frame 102, the lower frame 103 and the right frame 104 are sequentially surrounded and connected through a detachable structure to form a rectangular frame structure 10. The connecting structure includes an extension plate 3001 arranged at both ends of two opposite connecting plates 300 and a bendable first flip plate 303 arranged at the ends of the other two connecting plates 300. The extension plate 3001 is provided with a first hole 3002. After the four frames are surrounded, the first flip plate 303 passes through the first hole 3002 and extends to the other side of the first hole 3002, then bends and abuts against the side wall of the first flip plate 303 to fasten the two connecting plates 300. This solution employs an extension plate 3001 provided on the connecting plates 300 of two frames. The extension plate 3001 serves to abut the connecting plates 300 of the other two frames and also allows for insertion of the first flip plates 303 on the other two connecting plates 300, thereby securing the adjacent frames. This structure offers the advantage of rapid fastening and removal. The two opposing connecting plates referred to herein refer to the connecting plates 300 on the upper and lower frames or the left and right frames. In this embodiment, these are the connecting plates 300 on the upper frame 101 and the lower frame 103.

[0030] Preferably, the front panel 201 and the rear panel 202 are both formed by bending the edge of the connecting plate 300 90 degrees twice to form an L-shaped structure with a first flange 301 and a second flange 302. The left frame 102 and the rear frame 103 are defined as the first frame group, and the upper frame 101 and the lower frame 103 are defined as the second frame group. Notches 305 are provided at the connection between the L-shaped structure of the front panel 201 and the rear panel 202 of one of the first and second frame groups and the connecting plate 300 of the frame group. The front panel 201 and the rear panel 202 of the other frame group are respectively inserted into the two notches 305. The notches 305 are used to limit the inserted frames.

[0031] Preferably, the outer sidewalls of the front panel 201 and the rear panel 202 inserted into the notch 305 abut against the inner wall of the first flange 301 of the L-shaped structure of the frame assembly with the notch 305. This abutment structure further limits the inserted frame.

[0032] Preferably, the ends of the front panel 201 and the rear panel 202 inserted into the notch 305 abut against the inner wall of the second flange 302 of the L-shaped structure of the frame group with the notch 305. This abutting structure eliminates gaps between adjacent frames, which is beneficial to improving the stability of the adjacent frame structures.

[0033] Preferably, the ends of the front and rear panels 201, 202 of the frame assembly inserted into the notch 305 are provided with a bendable second flip plate 304. The second flange 302 of the L-shaped structure on the front and rear panels 201, 202 of the frame assembly with the notch 305 is provided with a second insertion hole 3021. After the four frames are enclosed, the second flip plate 304 passes through the second insertion hole 3021 and extends to the other side of the second insertion hole 3021, then bends and rests against the second flange 302 of the L-shaped structure of the frame assembly with the notch 305, fastening the two connecting plates 300. This structure provides a second level of fixation, increasing the stability of the connection between adjacent frames. In this embodiment, the second flange 302 on the upper frame 101 and the lower frame 103 has a second insertion hole 3021, and the corresponding ends of the left and right frames 102, 103 are provided with a second flip plate 304.

[0034] Preferably, the second insertion hole 3021 is arranged at the edge of the second flange 302 of the L-shaped structure on the frame assembly with the notch 305, and is located at the connection between the second flange 302 and the first flange 301. Being arranged at the edge can ensure that the bent portion has sufficient length.

[0035] Preferably, both ends of the front panel 201 and the rear panel 202 of the frame assembly with the notch 305 are provided with an angled structure 3011. The angled structure 3011 has a limiting effect on the frame inserted therein, and compared with the right-angled structure, it has a certain aesthetics.

[0036] Preferably, at least one group of the first insertion holes 3002 and the first flip plates 303 is provided. When multiple groups are provided, the flip directions of the first flip plates 303 of two adjacent groups are opposite. Providing multiple groups can improve the stability of the fixation.

[0037] Preferably, in the left frame 102 and the right frame 104, a support structure is provided between the front panel 201 and the rear panel 202 on the same frame. The support structure includes a third insertion hole 402 provided on the second flange 302 of the L-shaped structure of the front panel 201 and the rear panel 202 on the same frame, and a support frame 400 whose ends abut against the front panel 201 and the rear panel 202 on the same frame. The support frame 400 has a bendable third flip plate 4001 at each end. The third flip plate 4001 passes through the third insertion hole 402 and bends to abut against the second flange 302 of the L-shaped structure of the front panel 201 and the rear panel 202 on the same frame. The support structure is limited by the third flip plate 4001 and the third insertion hole 402. After being limited, its main portion abuts against the two opposing panels to maintain the shape of the two panels and prevent them from being squeezed and deformed.

[0038] Preferably, a limiting plate 403 with an upwardly opening notch 4031 is provided on the first flange 301 of the L-shaped structure of the front panel 201 and the rear panel 202 on the same frame. A reserved gap is provided between the limiting plate 403 and the third insertion hole 402 for inserting the third flip plate 4001. The support frame 400 is provided with an L-shaped hook 4002, which extends through the notch 4031 of the limiting plate 403 and hooks onto the limiting plate 403 when the third flip plate 4001 is fixed. In this solution, the L-shaped hook 4002 is hooked onto the limiting plate 403. The hook 4002 is a rigid structure and is used to improve the stability of the support structure.

[0039] The above is a detailed introduction to the welding-free detachable door frame title provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the present invention and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified. These improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A weld-free detachable door frame, comprising an upper frame, a left frame, a lower frame and a right frame, each of which has a front panel, a connecting plate and a rear panel connected in sequence. The upper frame, the left frame, the lower frame and the right frame are sequentially enclosed and connected through a detachable structure to form a rectangular frame structure, characterized in that The connecting structure includes an extension plate arranged at both ends of two opposite connecting plates and a bendable first flip plate arranged at the ends of the other two connecting plates. A first socket is provided on the extension plate. After the four frames are enclosed, the first flip plate passes through the first socket and extends to the other side of the first socket, then bends and sticks to the side wall of the first flip plate to fasten the two connecting plates.

2. The welding-free detachable door frame according to claim 1, characterized in that: The front panel and the rear panel are both connected by a plate edge bent 90 degrees twice to form an L-shaped structure with a first flange and a second flange. The left frame and the rear frame are defined as the first frame group, and the upper frame and the lower frame are defined as the second frame group. The L-shaped structure of the front panel and the rear panel on one of the first frame group and the second frame group is connected to the connecting plate of the frame group with a notch, and the front panel and the rear panel on the other frame group are respectively inserted into the two notches.

3. The welding-free detachable door frame according to claim 2, characterized in that: The outer side walls of the front panel and the rear panel inserted into the notch are pressed against the inner wall surface of the first flange of the L-shaped structure on the frame assembly with the notch.

4. The welding-free detachable door frame according to claim 3, characterized in that: The ends of the front panel and the rear panel inserted into the notch abut against the inner wall surface of the second flange of the L-shaped structure on the frame assembly with the notch.

5. The welding-free detachable door frame according to claim 2, characterized in that: The ends of the front panel and the rear panel of the frame group inserted into the notch are provided with a bendable second flip plate, and the second flange of the L-shaped structure on the front panel and the rear panel of the frame group with the notch is provided with a second hole. After the four frames are enclosed, the second flip plate passes through the second hole and extends to the other side of the second hole, then bends and rests against the second flange of the L-shaped structure on the frame group with the notch to fasten the two connecting plates.

6. The welding-free detachable door frame according to claim 5, characterized in that: The second insertion hole is arranged on the second flange edge of the L-shaped structure on the frame assembly with the notch and is located at the connection between the second flange and the first flange.

7. The welding-free detachable door frame according to claim 1, characterized in that: Both ends of the front panel and the rear panel of the frame assembly with the notch are provided with bevel structures.

8. The welding-free detachable door frame according to claim 1, characterized in that: At least one group of first jacks and first flip plates is provided. When multiple groups are provided, the flip directions of the first flip plates of two adjacent groups are opposite.

9. The welding-free detachable door frame according to claim 1, characterized in that: In the left frame and the right frame, a support structure is provided between the front panel and the rear panel on the same frame. The support structure includes a third jack on the second flange of the L-shaped structure provided on the front panel and the rear panel on the above-mentioned same frame, and a support frame with both ends resting against the front panel and the rear panel on the above-mentioned same frame. A bendable third flip plate is provided at both ends of the support frame. The third flip plate passes through the third jack and is bent to rest against the second flange of the L-shaped structure of the front panel and the rear panel on the above-mentioned same frame.

10. The welding-free detachable door frame according to claim 9, characterized in that: A limiting plate with an upward-opening notch is provided on the first flange of the L-shaped structure of the front panel and the rear panel on the same frame mentioned above. A reserved spacing is provided between the limiting plate and the third insertion hole for inserting the third flip plate. An L-shaped hook is provided on the support frame. The L-shaped hook extends into the notch of the limiting plate and is hooked on the limiting plate when the third flip plate is fixed.

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