A new type of snap-fit ​​steel door

The snap-fit ​​design of the installation, support, and cleaning mechanism solves the problem of steel doors tilting and sinking after long-term use, achieving stable opening and closing and convenient cleaning.

CN224452594UActive Publication Date: 2026-07-03CHANGZHOU QIAOCHUANG DOOR & WINDOW TECH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHANGZHOU QIAOCHUANG DOOR & WINDOW TECH CO LTD
Filing Date
2025-07-09
Publication Date
2026-07-03

Smart Images

  • Figure CN224452594U_ABST
    Figure CN224452594U_ABST
Patent Text Reader

Abstract

This utility model discloses a novel snap-fit ​​steel door, including a steel door body with an installation mechanism mounted on its lower part. The door body is connected to the lower part of the steel door body by a first bolt passing through a fixing plate and threadedly. This facilitates the installation of side plates and guide rollers, providing auxiliary support to the lower part of the steel door body and reducing the risk of the door body tilting and sagging, which could affect its opening and closing. Simultaneously, a cleaning rod and cleaning brush mounted below the mechanism are pushed to clean the ground when the door body is opened and closed. A second bolt passing through the mounting plate and threadedly connected to the cleaning rod allows for easy disassembly and replacement. Furthermore, the elasticity of multiple sets of push springs causes multiple connecting columns to push the mounting plate, ensuring the cleaning rod and cleaning brush remain in contact with the ground, thus improving the cleaning effect.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of steel door technology, and in particular to a novel snap-fit ​​steel door. Background Technology

[0002] Steel doors on the market are very similar in appearance to security doors. In terms of security performance, standard security doors have thicker steel plates and stronger impact resistance. Snap-fit ​​steel doors refer to steel doors that utilize slots and latches for quick installation and disassembly. Their core advantages lie in convenient and efficient installation and relatively low cost, making them particularly suitable for temporary buildings, industrial plants, warehouses, and simple facilities where installation speed is required, and where top-level security and sealing requirements are not essential.

[0003] Currently, steel doors are connected to the door frame via hinges. Due to the weight of the steel door, the hinges deform over time, causing the door to tilt and sag, affecting its opening and closing. To address this issue, we propose a new type of snap-fit ​​steel door. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that existing steel doors, when used, are connected to the door frame via hinge shafts. Due to the weight of the steel door, the hinge shafts deform over long-term use, causing the door to tilt and sink, affecting its opening and closing. Therefore, a new type of snap-fit ​​steel door is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A novel snap-fit ​​steel door includes a steel door body, an installation mechanism installed below the steel door body, a support mechanism fixedly connected below the installation mechanism, a pushing mechanism fixedly connected to the surface of the installation mechanism, and a cleaning mechanism installed below the pushing mechanism.

[0007] Preferably, the installation mechanism includes a first bolt, and a fixing plate is installed on the lower surface of the steel door body by the first bolt, and the cross-section of the fixing plate is set to L-shape.

[0008] Preferably, the support mechanism includes mounting side plates, both ends of the fixed plate are fixedly connected to the mounting side plates, and guide bottom rollers are installed on the inner side of the mounting side plates.

[0009] Preferably, the pushing mechanism includes a fixed telescopic frame, the fixed telescopic frame is fixedly connected to the surface of the fixed plate, and the inner wall of the fixed telescopic frame is welded to one end of the pushing spring. The other end of the pushing spring is welded to one side of the connecting plate, and the other side of the connecting plate is fixedly connected to one end of the connecting column. The other end of the connecting column is fixedly connected to one side of the mounting plate.

[0010] Preferably, the connecting plate is rectangular, and the inner wall dimensions of the fixed telescopic frame are adapted to the surface dimensions of the connecting plate.

[0011] Preferably, the connecting column is cylindrical, and a circular hole adapted to the connecting column is provided below the fixed telescopic frame.

[0012] Preferably, the cleaning mechanism includes a cleaning rod, which is mounted on the underside of the mounting plate by a second bolt, and the lower surface of the cleaning rod is provided with dense cleaning bristles.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. The device is connected to the bottom of the steel door body by threading through the first bolt through the fixing plate. This facilitates the installation of the side plate and guide roller, thereby providing auxiliary support for the bottom of the steel door body and reducing the possibility of the door body tilting and sagging, which would affect the opening and closing of the steel door body. At the same time, by pushing the cleaning rod and cleaning brush installed below the mechanism, the ground can be cleaned when the steel door body is opened and closed.

[0015] 2. The device is connected to the cleaning rod by a second bolt passing through the mounting plate and threaded together, which makes it easy to disassemble and replace the cleaning rod. At the same time, the elastic force of multiple sets of push springs can easily push the connecting plate, which in turn makes the multiple sets of connecting columns push the mounting plate, ensuring that the cleaning rod and cleaning brush bristles remain in contact with the ground, thus improving the cleaning effect. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of a novel snap-fit ​​steel door proposed in this utility model;

[0017] Figure 2 for Figure 1 A three-dimensional bottom view of the supporting and cleaning mechanisms in the diagram;

[0018] Figure 3 for Figure 1 A three-dimensional schematic diagram of the guide roller and cleaning rod structure in the middle;

[0019] Figure 4 for Figure 1 An exploded 3D diagram of the fixed telescopic frame and cleaning rod structure.

[0020] In the picture: 1. The main body of the steel door;

[0021] 2. Mounting mechanism; 21. First bolt; 22. Fixing plate;

[0022] 3. Support mechanism; 31. Side plate mounting; 32. Guide bottom roller;

[0023] 4. Pushing mechanism; 41. Fixed telescopic frame; 42. Pushing spring; 43. Connecting plate; 44. Connecting column; 45. Mounting plate; 46. Second bolt;

[0024] 5. Cleaning mechanism; 51. Cleaning rod; 52. Cleaning brush bristles. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Reference Figure 1-4 A novel snap-fit ​​steel door includes a steel door body 1, an installation mechanism 2 installed below the steel door body 1, and a support mechanism 3 fixedly connected below the installation mechanism 2. The support mechanism 3 can play a role in assisting to support the steel door body 1. A pushing mechanism 4 is fixedly connected to the surface of the installation mechanism 2, and a cleaning mechanism 5 is installed below the pushing mechanism 4.

[0027] Furthermore, refer to Figure 2 and Figure 3 It can be seen that the installation mechanism 2 includes a first bolt 21. A fixing plate 22 is installed on the lower surface of the steel door body 1 by the first bolt 21. The cross-section of the fixing plate 22 is set to L-shape. The first bolt 21 can facilitate the installation of the fixing plate 22. The L-shaped cross-section of the fixing plate 22 can make the fixing plate 22 snap into the surface of the steel door body 1.

[0028] Furthermore, refer to Figure 2 and Figure 3 It can be seen that the support mechanism 3 includes a mounting side plate 31. The mounting side plate 31 is fixedly connected to both ends of the lower part of the fixed plate 22. The mounting side plate 31 is equipped with a guide roller 32. The mounting side plate 31 can facilitate the installation of the guide roller 32. The rolling of the guide roller 32 can limit and guide the steel door body 1.

[0029] Furthermore, refer to Figure 3 and Figure 4It can be seen that the pushing mechanism 4 includes a fixed telescopic frame 41. The fixed telescopic frame 41 is fixedly connected to the surface of the fixed plate 22. The inner wall of the fixed telescopic frame 41 is welded to one end of the pushing spring 42. The other end of the pushing spring 42 is welded to one side of the connecting plate 43. The connecting plate 43 can be easily pushed by the elastic force of the pushing spring 42. The other side of the connecting plate 43 is fixedly connected to one end of the connecting column 44. The other end of the connecting column 44 is fixedly connected to one side of the mounting plate 45. The connecting mounting plate 45 can be easily pushed by the connecting column 44.

[0030] Furthermore, refer to Figure 3 and Figure 4 It can be seen that the connecting plate 43 is set as a rectangle, and the inner wall size of the fixed telescopic frame 41 is adapted to the surface size of the connecting plate 43. The connecting plate 43 slides along the inner wall of the fixed telescopic frame 41, which plays the role of limiting and driving the connecting column 44.

[0031] Furthermore, refer to Figure 3 and Figure 4 It can be seen that the connecting post 44 is cylindrical, and the fixed telescopic frame 41 has a circular hole that matches the connecting post 44. By making the connecting post 44 cylindrical, wear between it and the fixed telescopic frame 41 can be reduced.

[0032] Furthermore, refer to Figure 3 and Figure 4 It can be seen that the cleaning mechanism 5 includes a cleaning rod 51. The cleaning rod 51 is installed on the lower part of the mounting plate 45 by a second bolt 46, and the lower surface of the cleaning rod 51 is provided with dense cleaning bristles 52. The cleaning rod 51 can drive the dense cleaning bristles 52 to clean the ground.

[0033] Working principle: When this utility model is in use, the steel door body 1, according to the attached... Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4 The first bolt 21 passes through the fixing plate 22 and is threadedly connected to the steel door body 1, so that the mounting side plate 31 and the guide bottom roller 32 can be installed below the steel door body 1 and the guide bottom roller 32 can be in contact with the ground. At the same time, the second bolt 46 passes through the mounting plate 45 and is threadedly connected to the cleaning rod 51, so that the mounting plate 45 and the cleaning rod 51 can be connected. By pushing the spring 42, the connecting column 44 can drive the mounting plate 45 to push the cleaning rod 51, so that the cleaning bristles 52 can be kept in contact with the ground, which is convenient for cleaning the ground when the steel door body 1 is opened and closed.

[0034] The above is the complete working principle of this utility model.

[0035] In this utility model, the installation, connection or setting methods of all the components mentioned above are common mechanical methods, and the specific structure, model and coefficient index of all the components are their own technologies. As long as they can achieve their beneficial effects, they can be implemented, so they will not be described in detail.

[0036] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

[0037] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside, and vertical and horizontal" in the terminology only represent the orientation of the term in its conventional use or are common names understood by those skilled in the art, and should not be regarded as limitations on the term. At the same time, numerals such as "first," "second," and "third" do not represent specific quantities or orders, but are only used to distinguish names. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A new type of card joint steel door, comprising a steel door body (1), characterized in that, An installation mechanism (2) is installed below the steel door body (1), and a support mechanism (3) is fixedly connected below the installation mechanism (2). A pushing mechanism (4) is fixedly connected to the surface of the installation mechanism (2), and a cleaning mechanism (5) is installed below the pushing mechanism (4). The installation mechanism (2) includes a first bolt (21), and a fixing plate (22) is installed on the lower surface of the steel door body (1) by the first bolt (21), and the cross-section of the fixing plate (22) is set to L-shape; The support mechanism (3) includes a mounting side plate (31), and the mounting side plate (31) is fixedly connected to both ends of the fixed plate (22) below, and a guide bottom roller (32) is installed on the inner side of the mounting side plate (31).

2. A new type of steel door with a snap joint according to claim 1, characterized in that, The pushing mechanism (4) includes a fixed telescopic frame (41), the fixed telescopic frame (41) is fixedly connected to the surface of the fixed plate (22), and the inner wall of the fixed telescopic frame (41) is welded to one end of the pushing spring (42). The other end of the pushing spring (42) is welded to one side of the connecting plate (43), and the other side of the connecting plate (43) is fixedly connected to one end of the connecting column (44). The other end of the connecting column (44) is fixedly connected to one side of the mounting plate (45).

3. A new type of steel door with a snap joint according to claim 2, characterized in that, The connecting plate (43) is rectangular, and the inner wall size of the fixed telescopic frame (41) is adapted to the surface size of the connecting plate (43).

4. A new type of steel door with a snap joint according to claim 2, characterized in that, The connecting column (44) is cylindrical, and the fixed telescopic frame (41) has a circular hole below it that is compatible with the connecting column (44).

5. A new type of steel door with a snap joint according to claim 2, characterized in that, The cleaning mechanism (5) includes a cleaning rod (51), which is mounted on the underside of the mounting plate (45) by a second bolt (46), and the underside of the cleaning rod (51) is provided with dense cleaning bristles (52).