A small-volume assembled door barrier
By using the detachable structure of the modular gate and the design of the pin slot sidewall, the problems of large size, high cost and inconvenient locking of existing welded gates are solved, achieving small packaging, low-cost transportation and convenient locking.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 李小红
- Filing Date
- 2025-09-19
- Publication Date
- 2026-06-23
Smart Images

Figure CN224396385U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a door fixture, and more particularly to a door frame. Background Technology
[0002] In homes, kindergartens, and other similar settings, door gates serve as child safety devices, balancing safety and ease of use to effectively limit children's activity range and prevent them from accessing dangerous areas. The same applicant as this application previously filed a patent document with publication number CN217354217U. In that application, the inner door is locked to the door frame via a locking mechanism and a latch mechanism, making unlocking more difficult and less likely for children, thus ensuring a high level of safety and effectively confining children to a safe area. However, this solution uses a welded connection between the inner door's grille and the inner door frame, resulting in a non-separable, one-piece door gate structure. This requires significant storage space during subsequent packaging and warehousing, increasing storage costs. Furthermore, it reduces the carrying capacity of transport vehicles during transportation. Load efficiency; Based on the aforementioned problems with existing technologies, it is necessary to design a gate with a detachable structure to solve the problems of large size, high cost, and low efficiency of existing welded fixed gate structures in warehousing and transportation; In addition, the pin slot of the aforementioned gate is located at the bottom of the connector. When locking, because the user is above the gate, the specific position of the pin slot cannot be clearly observed from a top-down perspective. As a result, it is impossible to align the pin mechanism with the pin slot when locking. The user can only look down to observe the position of the pin slot and make multiple attempts to lock the gate, making the locking process inconvenient. Summary of the Invention
[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a modular gate with a small packaging volume.
[0004] The technical solution adopted by this utility model to solve its technical problem is:
[0005] A modular door frame with a small packaging volume includes a door frame and an inner door. One side of the inner door is hinged within the door frame. The door frame includes a threshold and doorposts. The doorposts are detachably connected to both sides of the threshold via connectors. A rotating assembly is provided between the inner door and the door frame, allowing the inner door to rotate along the axis of the rotating assembly. The inner door includes a frame composed of horizontal and vertical bars and a partition assembly installed within the frame. A locking mechanism is provided between the inner door and the door frame, fixing the relative position between the inner door and the door frame in the locked state. The doorposts and threshold are detachably connected via connectors. The inner door frame adopts a detachable structure with horizontal and vertical bars threaded together, allowing the entire door frame to be disassembled into multiple parts. Compared to the existing integrated structure where the grille is welded to the door frame, this disassembly significantly reduces packaging volume, lowers storage space occupancy, improves transportation efficiency, and reduces storage and transportation costs.
[0006] One end of the horizontal bar at the top of the inner door is provided with a sleeve for inserting the vertical bar, and the other end is provided with a connecting groove. One of the vertical bars on both sides of the inner door is threaded to the connecting groove of the horizontal bar at the top of the inner door, and the other is inserted into the sleeve and fixed by thread. Both sides of the horizontal bar at the bottom of the inner door are provided with the connecting groove, and the bottom of the vertical bar is threaded to the connecting groove.
[0007] The partition assembly consists of several support rods and a partition fabric fitted onto the support rods, the partition fabric separating the inner side of the inner door from the outer side.
[0008] The partition assembly includes multiple railings, and the inner side of the frame is provided with insertion holes for inserting the railings, and the railings are inserted into the insertion holes and fixed.
[0009] The connector is inserted into both sides of the threshold, connecting the doorpost and the threshold to form a detachable connection; the top and sides of the connector are provided with connecting tubes, and the connecting tubes and the inner wall of the connector form an insertion position for the threshold to be inserted. During assembly, the threshold is inserted into the insertion position.
[0010] A snap-fit spring is provided at the bottom of the connecting pipe, a snap-fit protrusion is provided at the end of the snap-fit spring, and a bayonet is provided at the corresponding position of the threshold. After installation, the snap-fit protrusion is located inside the bayonet.
[0011] A latch mechanism is provided at the bottom of the frame, and the latch mechanism and the locking mechanism are located on the same side. A latch groove is provided on the side wall of the connector on the same side as the latch mechanism. After locking, the latch of the latch mechanism extends into the latch groove to restrict the position of the inner door. By setting the latch groove on the side wall of the connector, the position of the latch groove can be seen intuitively when locking the door. When the user lifts the inner door, the latch mechanism can be accurately aligned with the latch groove to lock it, which is convenient for the user to operate.
[0012] A connecting piece is installed on the top of the doorpost on the same side as the locking mechanism, and a locking groove is provided on one side of the connecting piece so that the locking tongue of the locking mechanism can extend into it.
[0013] The rotating assembly includes a door hinge connector at the top of the inner door, a door hinge seat at the top of the doorpost, and a rotating shaft at the bottom of the inner door. The door hinge connector is hinged to the door hinge seat, so that the inner door and the doorpost are rotatably connected, and the inner door can rotate along the axis of the rotating assembly.
[0014] The beneficial effects of this utility model are as follows: This utility model uses a connector to form a detachable connection between the doorpost and the threshold. The inner door frame adopts a detachable structure with horizontal and vertical bars threaded together, allowing the entire door frame to be disassembled into multiple parts. Compared with the existing integrated structure where the grille and door frame are welded and fixed, disassembly can significantly reduce the packaging volume, reduce the occupancy rate of storage space, improve transportation efficiency, and reduce storage and transportation costs. This utility model also sets the latch slot on the side wall of the connector. When locking the door frame, the position of the latch slot can be seen intuitively. When the user lifts the inner door, the latch mechanism can be accurately aligned with the latch slot for locking, which is convenient for the user. Attached Figure Description
[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0016] Figure 1 This is a structural schematic diagram of Embodiment 1.
[0017] Figure 2 This is one of the exploded schematic diagrams of this utility model.
[0018] Figure 3 This is the second exploded view of this utility model.
[0019] Figure 4 This is a schematic diagram of the structure of Embodiment 2.
[0020] Figure 5 This is a structural diagram of the connector.
[0021] Figure 6 yes Figure 3 A magnified view of A in the middle. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.
[0023] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.
[0024] Reference Figures 1 to 6 A modular door frame with a small packaging volume includes a door frame 1 and an inner door 2. One side of the inner door 2 is hinged to the door frame 1. The door frame 1 includes a threshold 10 and doorposts 11. The doorposts 11 are detachably connected to both sides of the threshold 10 via connectors 3. A rotating assembly 4 is provided between the inner door 2 and the door frame 1, allowing the inner door 2 to rotate along the axis of the rotating assembly 4. The inner door 2 includes a frame 20 spliced from horizontal bars 200 and vertical bars 201 and a partition assembly 21 installed within the frame 20. A locking mechanism 5 is provided between the inner door 2 and the door frame 1, fixing the relative position between the inner door 2 and the door frame 1 in the locked state. The detachable connection between the doorposts and the threshold is achieved through connectors. The frame is spliced from horizontal bars and vertical bars, allowing the door frame to be disassembled into multiple independent parts, significantly reducing packaging volume, lowering storage space occupancy, improving transportation efficiency, and solving the problems of large finished product volume, high transportation cost, and low transportation efficiency of existing welded structures.
[0025] One end of the horizontal bar 200 at the top of the inner door 2 has a sleeve 202 for inserting the vertical bar 201, and the other end has a connecting groove 203. One of the vertical bars 201 on both sides of the inner door 2 is threaded to the connecting groove 203 of the top horizontal bar 200, and the other is threaded into the sleeve 202 for fixation. Both sides of the horizontal bar 200 at the bottom of the inner door 2 have the connecting groove 203, and the bottom of the vertical bar 201 is threaded into the connecting groove 203. The frame uses a threaded connection and sleeve-assisted positioning structure, which avoids the problem of the frame being unable to be disassembled due to welding, and ensures the structural strength of the assembled frame through the threaded connection, preventing the frame from loosening during use. Furthermore, no professional tools are required for installation; the frame can be assembled or disassembled simply by tightening the threads, making it convenient for users to operate themselves. The sleeve design allows for quick alignment of the vertical and horizontal bar connection positions, improving assembly efficiency. If a horizontal or vertical bar is partially damaged, it can be disassembled and replaced individually without scrapping the entire frame, reducing maintenance costs.
[0026] Example 1, as Figure 1As shown, the partition assembly 21 includes multiple railings 212. The inner side of the frame 20 is provided with insertion holes for inserting the railings 212, and the railings 212 are fixed in the insertion holes. This design ensures the structural strength of the inner door while allowing for detachment. The railing insertion structure avoids welding and, through the positioning and insertion of the insertion holes, ensures the stability of the partition assembly, making it suitable for scenarios with high protection strength requirements. The number of railings can be increased or decreased according to the protection density requirements, or different specifications of railings can be replaced, making it suitable for more usage scenarios compared to fixed grilles. Each railing can be individually pulled out of the insertion hole, and the disassembled parts are neatly arranged for easy stacking and storage. Damaged individual railings can be replaced individually, reducing usage costs.
[0027] Example 2, as Figure 4 As shown, the partition assembly 21 consists of several support rods 210 and a partition cloth 211 fitted onto the support rods 210. The partition cloth 211 isolates the inner side of the inner door 2 from the outer side. The partition cloth replaces the traditional welded and fixed grille, significantly reducing the overall weight of the door frame. After disassembly, the partition cloth can be folded and stored, further reducing the packaging volume and better meeting the needs of warehousing and transportation. The partition cloth is soft in texture, which can prevent children from being injured when they collide with it. At the same time, it can effectively isolate the line of sight and the range of movement, taking into account both protective safety. The support rods and the partition cloth are a set structure, which can be quickly separated when disassembling and directly fitted together when assembling. The operation difficulty is lower than that of welding and bolting the grille.
[0028] The connector 3 is inserted into both sides of the threshold 10, connecting the doorpost 11 and the threshold 10 to form a detachable connection. Connecting tubes 30 are provided on the top and sides of the connector 3, forming insertion positions between the connecting tubes 30 and the inner wall of the connector 3 for the threshold 10 to be inserted. During assembly, the threshold 10 is inserted into these insertion positions. These insertion positions allow for quick assembly and disassembly of the door frame, enabling the threshold and connector to be initially positioned without bolts or welding, significantly shortening the door frame installation time. The insertion positions formed by the connecting tubes and the inner wall also ensure the accuracy of the door frame connection, providing guidance and ensuring the perpendicularity and positional accuracy of the threshold and doorpost, preventing the door frame from tilting after assembly. A snap-fit spring 300 is provided at the bottom of the connecting tube 30, and a snap-fit protrusion 301 is provided at the end of the snap-fit spring 300. A corresponding slot is provided on the threshold 10. After installation, the snap-fit protrusion 301 is located within the slot. The elastic structure of the snap-fit spring allows the sill to automatically engage after being inserted into the insertion position, preventing the connector from separating from the sill during use. Disassembly only requires pressing the spring to release the lock, without affecting the removability. No additional bolts or tools are needed; it can be fixed by insertion and snap-fit, which is more efficient than threaded connections.
[0029] A latch mechanism 6 is provided at the bottom of the frame 20. The latch mechanism 6 and the locking mechanism 5 are located on the same side. A latch groove 31 is provided on the side wall of the connector 3 on the same side as the latch mechanism 6. After locking, the latch of the latch mechanism 6 extends into the latch groove 31, restricting the position of the inner door 2. By adding a bottom latch mechanism to the locking mechanism, a double-locking structure is formed, which greatly improves the anti-accidental opening performance, prevents children from unlocking the door themselves, and improves the safety of the door.
[0030] When opening the door, unlock the locking mechanism so that the latch of the locking mechanism disengages from the locking groove on the connector. Then, pull the inner door upward to pull the bolt mechanism at the bottom of the inner door out of the bolt groove on the connector. Then, rotate it along the axis of the rotating component to open it. Conversely, when closing the door, pull the inner door upward so that the bolt mechanism at the bottom of the inner door aligns with the bolt groove on the connector. Insert the bolt mechanism into the bolt groove for initial locking, and then insert the latch of the locking mechanism into the locking groove on the connector for secondary locking.
[0031] In this embodiment, the latch slot is horizontally positioned on the side wall of the connector. However, in patent document CN217354217U, the latch slot is positioned at the bottom of the connector. With this design, when locking, because the user is above the door frame, the specific position of the latch slot cannot be clearly observed from a top-down perspective. This makes it impossible to align the latch mechanism with the latch slot when locking, requiring the user to bend over to observe the position of the latch slot and make multiple attempts to lock the door frame, making the locking process inconvenient. However, in this embodiment, the latch slot is positioned on the side wall of the connector. When locking the door frame, the position of the latch slot can be seen directly. When the user lifts the inner door, the latch mechanism can be accurately aligned with the latch slot for locking, making the operation more convenient for the user.
[0032] A connecting member 7 is installed on the top of the door post 11 on the same side as the locking mechanism 5. A locking groove is provided on one side of the connecting member 7 so that the locking tongue of the locking mechanism 5 can extend into it.
[0033] The rotating assembly 4 includes a door hinge connector 40 disposed at the top of the inner door 2, a door hinge seat 41 disposed at the top of the doorpost 11, and a rotating shaft 42 disposed at the bottom of the inner door 2. The door hinge connector 40 is hinged to the door hinge seat 41, so that the inner door 2 and the doorpost 11 are rotatably connected, and the inner door 2 can rotate along the axis of the rotating assembly 4.
[0034] The specific structures of the locking mechanism 5, the pin mechanism 6, and the rotating component 4 have been disclosed in an earlier application (patent document with publication number CN217354217U) and are existing technical solutions, so they will not be described in detail in this utility model.
[0035] In this invention, the term "multiple" refers to two or more items unless otherwise expressly defined. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0036] It should be noted that when a component is referred to as being "assembled on," "mounted on," "fixed to," or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0037] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0038] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A modular door frame with a small packaging volume, comprising a door frame (1) and an inner door (2), wherein one side of the inner door (2) is hinged within the door frame (1), characterized in that... The door frame (1) includes a threshold (10) and a doorpost (11). The doorpost (11) is detachably connected to both sides of the threshold (10) via a connector (3). A rotating assembly (4) is provided between the inner door (2) and the door frame (1) so that the inner door (2) can rotate along the axis of the rotating assembly (4). The inner door (2) includes a frame (20) spliced by a horizontal bar (200) and a vertical bar (201) and a partition assembly (21) installed in the frame (20). A locking mechanism (5) is provided between the inner door (2) and the door frame (1) to fix the relative position between the inner door (2) and the door frame (1) in the locked state.
2. The modular gate with small packaging volume according to claim 1, characterized in that... One end of the horizontal bar (200) at the top of the inner door (2) is provided with a sleeve (202) into which the vertical bar (201) is inserted, and the other end is provided with a connecting groove (203). One of the vertical bars (201) on both sides of the inner door (2) is threaded to the connecting groove (203) of the horizontal bar (200) at the top of the inner door (2), and the other is inserted into the sleeve (202) and then threaded. The horizontal bar (200) at the bottom of the inner door (2) is provided with the connecting groove (203) on both sides, and the bottom of the vertical bar (201) is threaded to the connecting groove (203).
3. The modular gate with small packaging volume according to claim 1, characterized in that... The partition assembly (21) consists of several support rods (210) and a partition cloth (211) fitted on the support rods (210), the partition cloth (211) separating the inner side of the inner door (2) from the outer side.
4. The modular gate with small packaging volume according to claim 1, characterized in that... The partition assembly (21) includes multiple railings (212), and the inner side of the frame (20) is provided with insertion holes for inserting the railings (212), and the railings (212) are inserted into the insertion holes and fixed.
5. The modular gate with small packaging volume according to claim 1, characterized in that... The connector (3) is inserted into both sides of the threshold (10) to connect the doorpost (11) and the threshold (10) so that the two are detachably connected; the top and side of the connector (3) are provided with connecting tubes (30), and the connecting tubes (30) and the inner wall of the connector (3) form an insertion position for the threshold (10) to be inserted. During assembly, the threshold (10) is inserted into the insertion position.
6. The modular gate with small packaging volume according to claim 5, characterized in that... A snap-fit spring (300) is provided at the bottom of the connecting pipe (30), a snap-fit protrusion (301) is provided at the end of the snap-fit spring (300), and a bayonet is provided at the corresponding position of the threshold (10). After installation, the snap-fit protrusion (301) is located inside the bayonet.
7. The modular gate with small packaging volume according to claim 1, characterized in that... A latch mechanism (6) is provided at the bottom of the frame (20). The latch mechanism (6) and the locking mechanism (5) are located on the same side. A latch groove (31) is provided on the side wall of the connector (3) on the same side as the latch mechanism (6). After locking, the latch of the latch mechanism (6) extends into the latch groove (31) to restrict the position of the inner door (2).
8. The modular gate with small packaging volume according to claim 1, characterized in that... A connecting piece (7) is installed on the top of the doorpost (11) on the same side as the locking mechanism (5). A locking groove is provided on one side of the connecting piece (7) so that the locking tongue of the locking mechanism (5) can be inserted.
9. The modular gate with small packaging volume according to claim 1, characterized in that... The rotating assembly (4) includes a door hinge connector (40) disposed on the top of the inner door (2), a door hinge seat (41) disposed on the top of the doorpost (11), and a rotating shaft (42) disposed on the bottom of the inner door (2). The door hinge connector (40) is hinged to the door hinge seat (41), so that the inner door (2) and the doorpost (11) form a rotating connection, and the inner door (2) can rotate along the axis of the rotating assembly (4).