A detachable steel door frame

Abstract

This invention discloses a detachable steel door frame, including a horizontal frame with a folding end and a snap-fit ​​end at both ends. The folding end is snap-fitted with an opening limiting structure and is slidably connected to the folding structure. Two opening limiting structures are provided, each fixedly connected to both ends of a vertical frame. The folding limiting structure is fixedly connected to the upper end of the vertical frame. The snap-fit ​​end of the horizontal frame is snap-fitted with an opening limiting structure away from the folding limiting structure. This invention effectively solves the problems of excessive volume, low transportation efficiency, difficult on-site handling, and easy damage and scratches during the transportation of steel door frames after they are manufactured. Furthermore, the material and labor costs for welding during overall shipment are high. In addition, if the door frame is modular, it needs to be assembled with bolts during subsequent installation, which requires further efficiency improvement.

Description

Technical Field

[0001] This invention mainly relates to the field of door frame technology, specifically a detachable steel door frame. Background Technology

[0002] With increasing national and societal awareness of environmental protection, steel doors will be widely used in industrial, civil, and high-rise buildings. Simultaneously, the demand for steel doors from the real estate market is gradually increasing, indicating a promising market outlook. Currently, steel door frames are widely used for entry doors; however, existing steel door frames have some drawbacks:

[0003] 1. After the steel door is manufactured, the steel door frame is usually assembled and shipped as a whole. During transportation, the steel door frame is often too large, has low transportation efficiency, is difficult to handle on site, and is easily damaged or scratched.

[0004] 2. The welding process of the overall shipping frame generates exhaust gas pollution and poses a significant health hazard to employees; the material and labor costs of welding are also high.

[0005] 3. In addition, if the door frame is modular, it needs to be assembled with bolts during subsequent installation, which requires further improvement in efficiency.

[0006] Therefore, a detachable steel door frame is needed to solve the above problems. Summary of the Invention

[0007] The present invention addresses the problem that existing technical solutions are too simplistic by providing a solution that is significantly different from existing technologies. It mainly provides a detachable steel door frame to solve the technical problems mentioned in the background.

[0008] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: a detachable steel door frame, including a horizontal frame, the two ends of the horizontal frame being a folding end and a snap-fit ​​end respectively, the folding end being snap-fitted with an opening limiting structure, the folding end being slidably connected to the folding structure, the number of opening limiting structures being two, the two opening limiting structures being fixedly connected to the two ends of a vertical frame respectively, the folding limiting structure being fixedly connected to the upper end of the vertical frame, and the snap-fit ​​end of the horizontal frame being snap-fitted with an opening limiting structure away from the folding limiting structure.

[0009] Preferably, the folding structure includes a second fixing block, one end of which is fixedly connected to one side of the groove in the vertical frame, and the other end of which is fixedly connected to one side of the second limiting plate. The second limiting plate is threadedly connected to a rotating column on the side away from the vertical frame, and the rotating column is rotatably and slidably connected to the waist-shaped groove in the rotating plate on one side of the folding end.

[0010] Preferably, the outer ring of one end of the rotating column away from the second limiting plate is rotatably connected to the inner ring of the rotating ring.

[0011] Preferably, a hexagonal hole is provided at one end of the rotating column away from the second limiting plate.

[0012] Preferably, the opening limiting structure includes a first fixing block, one end of which is fixedly connected to one side of the groove in the vertical frame, the other end of which is fixedly connected to a first limiting plate, a first sliding hole in one side of the first limiting plate, the first sliding hole being slidably connected to one end of a telescopic block, the other end of which is fixedly connected to one side of the groove in the vertical frame, and one end of which is slidably connected to a second sliding hole in the limiting block on the folding end side.

[0013] Preferably, the telescopic block includes a telescopic sleeve, one end of which is fixedly connected to one side of the groove in the vertical frame, the inner ring of the other end of the telescopic sleeve is slidably connected to the outer ring of the telescopic rod, the outer ring of the telescopic rod at the middle position is fixedly connected to the inner ring of the pulling block, an elastic element is provided on the outer ring of the telescopic rod near the sleeve, one end of the elastic element contacts the telescopic sleeve, the other end of the elastic element contacts one side of the pulling block, and the end of the telescopic rod away from the elastic element is slidably connected to the first sliding hole and the second sliding hole.

[0014] Preferably, the corner of the pulling block away from the elastic element has a bevel.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the waist-shaped groove allows the rotating column and the rotating plate on one side of the folding end to slide, thereby the horizontal frame and the vertical frame slide and abut against each other to form stability. Furthermore, by pulling out the rotating plate on one side of the folding end of the horizontal frame, the horizontal frame and the vertical frame are separated from each other. Then, by rotating the rotating column, the horizontal frame and the vertical frame can be folded in half, thereby facilitating transportation.

[0016] During installation, simply open the horizontal frame, pull down the telescopic latch, and then align the telescopic latch with the first and second sliding holes to release it. This completes the right-angle positioning of the horizontal and vertical frames, eliminating the need for bolts for fixing and making installation more convenient and faster.

[0017] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 This is a schematic diagram of the telescopic card block structure in this invention;

[0021] Figure 4 This is a schematic diagram of the structure at both ends of the vertical frame in this invention;

[0022] Figure 5 This is a schematic diagram of the folding structure in this invention;

[0023] Figure 6 This is a schematic diagram of the structure at both ends of the horizontal frame in this invention.

[0024] Figure descriptions: 1-Horizontal frame, 11-Folding end, 111-Limiting block, 112-Rotating plate, 12-Snap-fit ​​end, 2-Vertical frame, 3-Opening limiting structure, 31-First fixing block, 32-First limiting plate, 33-Telescopic locking block, 331-Telescopic sleeve, 332-Telescopic rod, 333-Elastic element, 334-Pull block, 4-Folding structure, 41-Second fixing block, 42-Second limiting plate, 43-Rotating column, 431-Rotating ring. Detailed Implementation

[0025] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] Please see Figure 1A detachable steel door frame includes a horizontal frame 1, with a folding end 11 and a snap-fit ​​end 12 at its two ends. The folding end 11 is snap-fitted with an opening limiting structure 3 and slidably connected to a folding structure 4. Two opening limiting structures 3 are provided, and the two opening limiting structures 3 are fixedly connected to the two ends of a vertical frame 2 respectively. The folding limiting structure is fixedly connected to the upper end of the vertical frame 2, and the snap-fit ​​end 12 of the horizontal frame 1 is snap-fitted with the opening limiting structure 3 away from the folding limiting structure.

[0029] The folding structure 4 includes a second fixing block 41. One end of the second fixing block 41 is fixedly connected to one side of the groove in the vertical frame 2, and the other end of the second fixing block 41 is fixedly connected to one side of the second limiting plate 42. The side of the second limiting plate 42 away from the vertical frame 2 is threadedly connected to the rotating column 43. The rotating column 43 is rotatably and slidably connected to the waist-shaped groove in the rotating plate 112 on one side of the folding end 11. The waist-shaped groove allows the rotating column 43 to slide with the rotating plate 112 on one side of the folding end 11, so that the horizontal frame 1 and the vertical frame 2 slide and abut against each other, forming stability. Furthermore, by pulling out the rotating plate 112 on one side of the folding end 11 of the horizontal frame 1, the horizontal frame 1 and the vertical frame 2 are separated from each other. Then, by rotating the rotating column 43, the horizontal frame 1 and the vertical frame 2 can be folded in half, which facilitates transportation.

[0030] Please see Figure 2 and Figure 3 One end of the rotating column 43, away from the second limiting plate 42, is rotatably connected to the inner ring of the rotating ring 431. Since the side of the second limiting plate 42 away from the vertical frame 2 is threadedly connected to the rotating column 43, the rotating ring 431 can effectively prevent the rotating column 43 from becoming loose when the horizontal frame 1 and the vertical frame 2 are folded. A hexagonal hole is provided at one end of the rotating column 43 away from the second limiting plate 42. When the door frame is not in use, the rotating column 43 can be disengaged from the second limiting plate 42 by inserting a tool into the hexagonal hole, thereby facilitating the disassembly of the horizontal frame 1 and the vertical frame 2.

[0031] Please see Figure 2 and Figure 4 The opening limiting structure 3 includes a first fixing block 31. One end of the first fixing block 31 is fixedly connected to one side of the groove in the vertical frame 2, and the other end of the first fixing block 31 is fixedly connected to the first limiting plate 32. A first sliding hole is opened on one side of the first limiting plate 32. The first sliding hole is slidably connected to one end of the telescopic block 33. The other end of the telescopic block 33 is fixedly connected to one side of the groove in the vertical frame 2. One end of the telescopic block 33 is slidably connected to the second sliding hole opened on the limiting block 111 on one side of the folding end 11. During installation, simply open the horizontal frame 1, pull down the telescopic block 33, and then let the telescopic block 33 align with the first sliding hole and the second sliding hole to release it. This completes the right-angle limiting of the horizontal frame 1 and the vertical frame 2, eliminating the need for bolts for fixing, making it more convenient and quick to install.

[0032] Please see Figure 2 and Figure 3 The telescopic block 33 includes a telescopic sleeve 331. One end of the telescopic sleeve 331 is fixedly connected to one side of the groove in the vertical frame 2. The inner ring of the other end of the telescopic sleeve is slidably connected to the outer ring of the telescopic rod 332. The outer ring of the telescopic rod 332 at the middle position is fixedly connected to the inner ring of the pull block. An elastic element 333 is provided on the outer ring of the telescopic rod 332 near the sleeve. This elastic element 333 can be a spring. One end of the elastic element 333 contacts the telescopic sleeve 331, and the other end of the elastic element 333 contacts one side of the pull block 334. The end of the telescopic rod 332 away from the elastic element 333 is slidably connected to the first sliding hole and the second sliding hole. In this way, bolts are no longer used for fixing and limiting, which facilitates the installation and disassembly of the workers. The corner of the pull block 334 away from the elastic element 333 is provided with a bevel. The bevel makes it easier for the workers to press down the telescopic rod 332, which improves efficiency.

[0033] The present invention has been described by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A detachable steel door frame, characterized in that: The frame includes a horizontal frame (1), with a folding end (11) and a snap-fit ​​end (12) at its two ends. The folding end (11) is snap-fitted to an opening limiting structure (3), and the folding end (11) is slidably connected to a folding structure (4). There are two opening limiting structures (3), which are fixedly connected to both ends of a vertical frame (2). The folding structure (4) is fixedly connected to the upper end of the vertical frame (2). The snap-fit ​​end (12) of the horizontal frame (1) is snap-fitted to an opening limiting structure (3) away from the folding structure (4). The folding structure (4) includes a second fixing block (41), one end of which is fixedly connected to one side of the groove in the vertical frame (2), and the other end of which is fixedly connected to one side of the second limiting plate (42). The second limiting plate (42) is threadedly connected to a rotating column (43) on the side away from the vertical frame (2). The rotating column (43) is rotatably and slidably connected to the waist-shaped groove in the rotating plate (112) on one side of the folding end (11). The opening limiting structure (3) includes a first fixing block (31), one end of the first fixing block (31) is fixedly connected to one side of the groove opened in the vertical frame (2), the other end of the first fixing block (31) is fixedly connected to the first limiting plate (32), one side of the first limiting plate (32) has a first sliding hole, the first sliding hole is slidably connected to one end of the telescopic block (33), the other end of the telescopic block (33) is fixedly connected to one side of the groove opened in the vertical frame (2), and one end of the telescopic block (33) is slidably connected to the second sliding hole opened in the limiting block (111) on one side of the folding end (11).

2. A detachable steel door frame according to claim 1, characterized in that: The outer ring of one end of the rotating column (43) away from the second limiting plate (42) is rotatably connected to the inner ring of the rotating ring (431).

3. A detachable steel door frame according to claim 2, characterized in that: A hexagonal hole is provided at one end of the rotating column (43) away from the second limiting plate (42).

4. A detachable steel door frame according to claim 1, characterized in that: The telescopic block (33) includes a telescopic sleeve (331). One end of the telescopic sleeve (331) is fixedly connected to one side of the groove in the vertical frame (2). The inner ring of the other end of the telescopic sleeve (331) is slidably connected to the outer ring of the telescopic rod (332). The outer ring of the telescopic rod (332) at the middle position is fixedly connected to the inner ring of the pull block. An elastic element (333) is provided on the outer ring of the telescopic rod (332) near the sleeve. One end of the elastic element (333) is in contact with the telescopic sleeve (331). The other end of the elastic element (333) is in contact with one side of the pull block (334). The end of the telescopic rod (332) away from the elastic element (333) is slidably connected to the first sliding hole and the second sliding hole.

5. A detachable steel door frame according to claim 4, characterized in that: The pull block (334) has a beveled edge at one end away from the elastic member (333).

Images