A domestic security door

Abstract

The utility model provides a kind of household security door, it is related to door and window technical field.The household security door, comprising: door frame, door body and folding shoe-changing stool;The side of the door body is hinged with the side of the door frame;The lower part of the inside of the door body is provided with the recessed installation groove to the inside direction of the door body;The folding shoe-changing stool is embedded in the installation groove, so that the outer surface of the folding shoe-changing stool is in the same plane with the inside surface of the door body when it is in folding state.Only modify inside door panel, outside is complete, do not affect the main structure strength of security door, without modifying outside mould, save development cost.Folding shoe-changing stool is independent module, can be integrally disassembled and replaced, and has large maintenance space.After storage, it is completely flush, without damaging the appearance of door body.

Description

Technical Field

[0001] This utility model relates to the field of door and window technology, and in particular to a household security door. Background Technology

[0002] With the acceleration of urbanization and increasingly compact living spaces, small apartments have become the mainstream, and users have placed higher demands on the utilization of indoor space. In the entrance area, putting on and taking off shoes is a frequent daily activity, so a shoe-changing bench is usually needed in the entryway to improve convenience and comfort. However, traditional freestanding shoe-changing benches or cabinets occupy valuable indoor floor space, affecting passage and the overall aesthetics of the layout, especially in small apartments. Therefore, in recent years, designs integrating shoe-changing functionality into the door structure have emerged, attempting to improve efficiency through space reuse.

[0003] In the prior art, various integrated shoe-changing door structures have been disclosed. For example, Chinese invention patent CN104295209A discloses a security door with a shoe cabinet and a stool, which has a round stool set on the outside of the door. The exposed structure destroys the overall aesthetics of the security door and does not conform to the trend of modern home minimalist design. Utility Model Content

[0004] The main technical problem to be solved by this utility model is to provide a household security door that integrates a folding shoe-changing stool that can automatically reset, is easy to use, is easy to maintain, and has a flat and beautiful surface.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] A type of household security door includes: a door frame, a door body, and a folding shoe-changing stool;

[0007] One side of the door is hinged to one side of the door frame;

[0008] The lower part of the inner side of the door body is provided with a mounting groove that is recessed towards the inside of the door body;

[0009] The folding shoe-changing stool is embedded in the mounting groove, so that when the folding shoe-changing stool is in the folded state, its outer surface is in the same plane as the inner surface of the door.

[0010] The top wall of the mounting groove is provided with an elastic sealing strip;

[0011] The slot at the top of the mounting groove is provided with a snap-fit ​​block;

[0012] The outer surface of the snap-fit ​​block is in the same plane as the inner surface of the door body;

[0013] The outer surface of the top of the folding shoe changing stool is provided with a snap-fit ​​groove that is adapted to the snap-fit ​​block. The folding shoe changing stool is installed in the mounting groove by snapping the snap-fit ​​block into the snap-fit ​​groove.

[0014] Furthermore, the folding shoe-changing stool includes a stool frame and a stool board;

[0015] The bottom end of the stool frame is symmetrically provided with first hinge holes on both sides;

[0016] The bottom of the stool board is provided with symmetrical second hinge holes on both sides;

[0017] Two pivots pass through the first hinge hole and the second hinge hole respectively, hinge the stool board to the stool frame;

[0018] Each pivot is fitted with a torsion spring, one arm of which abuts against the stool frame and the other arm against the stool board, providing a restoring force for the stool board to flip.

[0019] Furthermore, the snap-fit ​​groove is provided on the top outer surface of the stool frame.

[0020] Furthermore, the height of the snap-fit ​​block is 1-2 cm and the thickness is 2-4 mm.

[0021] Furthermore, the folding shoe-changing stool also includes a limiting pull rope;

[0022] One end of the limiting pull rope is connected to the inner wall of the stool frame, and the other end is connected to the side of the stool board;

[0023] When the stool is flipped downwards to the unfolded state, the limiting rope is tightened to limit the flipping angle of the stool and keep it stably in a near-horizontal working position.

[0024] Furthermore, the limiting pull rope is provided in two parts, symmetrically arranged on the left and right sides of the stool frame;

[0025] One end of each of the limiting ropes is connected to the inner wall of the stool frame, and the other end is connected to the corresponding side of the stool board.

[0026] Furthermore, the folding shoe-changing stool also includes an auxiliary unfolding pull rope;

[0027] One end of the auxiliary unfolding pull rope is connected to the bottom surface of the stool away from the pivot, allowing the user to pull it to open the folding shoe-changing stool.

[0028] Furthermore, the stool board includes a stool board body and a soft seat cushion cover;

[0029] The seat cover is fitted onto the stool board with an elastic edge, covering its upper surface and side edges.

[0030] The technical solution provided by this utility model has the following technical effects:

[0031] Only the inner door panel is modified, while the outer panel remains intact, without affecting the structural strength of the security door. No modifications to the outer mold are required, saving development costs. The folding shoe bench is an independent module that can be completely disassembled and replaced, providing ample maintenance space. When folded, it lies completely flat, without damaging the door's appearance. Attached Figure Description

[0032] The above and other features and advantages of this invention will become more apparent from a detailed description of exemplary embodiments with reference to the accompanying drawings.

[0033] Figure 1 This is a structural schematic diagram of a household security door provided in an embodiment of this utility model;

[0034] Figure 2 This is a structural schematic diagram of a folding shoe-changing stool in a household security door provided in this embodiment of the utility model.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Door frame; 2. Door body; 3. Folding shoe changing stool; 4. Elastic sealing strip; 5. Clip-on block;

[0037] 21. Stool frame, 22. Stool board, 23. Rotating shaft, 24. Snap-fit ​​groove, 25. Limiting pull rope, 26. Auxiliary unfolding pull rope. Detailed Implementation

[0038] The above diagram is only intended to illustrate the structural relationships related to the utility model and is not intended to represent the actual scale of the product.

[0039] like Figure 1 and Figure 2 As shown, this utility model proposes a new type of household security door, which cleverly integrates a foldable and retractable shoe-changing stool on the lower inner side of the door body 2 without significantly increasing the thickness of the door body 2 or compromising the aesthetics of the exterior. This improves functionality, comfort and maintainability.

[0040] This utility model discloses a household security door, comprising a door frame 1, a door body 2, and a folding shoe-changing stool 3. One side of the door body 2 is hinged to one side of the door frame 1 via a hinge, thereby enabling the door body 2 to open and close relative to the door frame 1.

[0041] Door 2 adopts a conventional security door structure, including an outer door panel, an inner door panel, and a layer of thermal and sound insulation material filling the space between them. The outer door panel is typically made of cold-rolled steel sheet with a thickness of 0.8mm to 1.2mm, formed by stamping. The surface can be electrostatically sprayed, transferred with wood grain, or coated to enhance aesthetics and corrosion resistance. The inner door panel is made of cold-rolled steel sheet with a thickness of 0.6mm to 1.0mm, requiring a high degree of surface flatness to ensure subsequent assembly accuracy.

[0042] The lower part of the inner side of the door body 2 (i.e., the inner door panel) is provided with a mounting groove that is recessed into the interior of the door body 2. This mounting groove is used to embed and fix the folding shoe changing stool 3.

[0043] The mounting groove is formed as follows: During the processing of the door assembly 2, only a partial cut is made in the inner door panel to create a rectangular or near-rectangular opening. The size of this opening matches the outline of the folding shoe bench 3. When filling the cavity between the outer and inner door panels, polyurethane foam (PUFoam) is used for high-pressure injection molding. During the foaming process, a special mold or baffle is used to avoid the opening area, allowing the foam material to form a complete filling layer around the mounting groove, thus creating an independent and enclosed mounting space inside the door 2, i.e., the mounting groove. The key advantage of this design is that only the inner door panel needs to be stamped and opened, without modifying the mold structure of the outer door panel, thereby significantly reducing mold development costs. It is particularly suitable for functional upgrades of existing security door products.

[0044] The outer door panel remains intact without any openings, and no modifications have been made to its mold. Functional upgrades can be achieved simply by adjusting the stamping mold of the inner door panel, which significantly reduces mold development costs and is particularly suitable for the technological iteration of existing security door products.

[0045] As an alternative implementation, a metal mounting plate can be provided extending from the edge of the opening towards the outer door panel. This mounting plate can be fixed to the edge of the opening on the inner door panel by welding or screws. Its outward extension width is equal to the distance between the inner and outer door panels, thus forming the mounting groove together with the outer door panel. The mounting plate is preferably made of 1.0mm thick galvanized steel sheet, with its edges bent to enhance structural rigidity. During the foaming process, the presence of the mounting plate provides a clear boundary for the foaming material, preventing material from flowing into the mounting groove and ensuring the cleanliness and dryness of the interior space. This structure further enhances the structural stability of the mounting groove, preventing deformation of the inner door panel due to uneven stress over long-term use, which could affect the assembly accuracy of the shoe-changing stool.

[0046] The folding shoe bench 3 has a flat rectangular structure, and its external dimensions are matched with the internal dimensions of the mounting groove. This ensures that when the folding shoe bench 3 is folded and stored, its outer surface is flush with the inner surface of the door 2, meaning it is completely embedded in the mounting groove and does not protrude from the inner surface of the door 2. This guarantees the overall flatness and aesthetics of the door 2, preventing bumps or scratches to the user. The folding shoe bench 3 is made of engineering plastic or metal, preferably ABS engineering plastic or die-cast aluminum alloy, possessing good strength, weather resistance, and lightweight characteristics.

[0047] An elastic sealing strip 4 is provided on the top wall of the mounting slot. This elastic sealing strip 4 can be made of silicone, with a cross-sectional shape that can be D-shaped, P-shaped, or square. Its hardness is Shore A 40° to 60°, exhibiting good resilience and compression set properties. The elastic sealing strip 4 is fixed to the top wall of the mounting slot using double-sided tape or hot melt adhesive. Its main function is to provide pre-pressure after the folding shoe changing stool 3 is installed in place, enhancing assembly stability.

[0048] A snap-fit ​​block 5 is provided at the top opening of the mounting groove. Multiple blocks, preferably two, are symmetrically arranged on the left and right sides of the top of the mounting groove. The snap-fit ​​block 5 can be made of stamped metal, and its outer surface is polished to be flush with the inner surface of the door body 2, ensuring a smooth overall appearance. The outer surface of the top of the folding shoe bench 3 is provided with snap-fit ​​grooves 24 that fit the snap-fit ​​blocks 5. The number and position of the snap-fit ​​grooves 24 correspond one-to-one with the snap-fit ​​blocks 5. The cross-sectional shape of the snap-fit ​​grooves 24 is an inverted "T" shape or a dovetail groove shape, which can form an interference fit or a flexible snap-fit ​​connection with the snap-fit ​​blocks 5. When installing the folding shoe bench 3, the operator aligns the top of the folding shoe bench 3 with the mounting groove, applies pressure to make the top low-pressure elastic sealing strip 4, and simultaneously the snap-fit ​​block 5 is inserted into the snap-fit ​​groove 24. Then, the bottom end of the folding shoe bench 3 is pushed into the mounting groove until it is fully inserted. The snap-fit ​​structure, combined with the elastic sealing strip 4, enables the quick, tool-free installation of the folding shoe-changing stool 3, and the connection is firm and not easy to loosen.

[0049] The height of the snap-fit ​​block 5 is 1-2 cm and the thickness is 2-4 mm.

[0050] The folding shoe-changing stool 3 includes a stool frame 21 and a stool board 22. The stool frame 21 is an integral structure with first hinge holes symmetrically arranged on the left and right sides of its bottom end. These first hinge holes are through holes with smooth, burr-free walls. The stool board 22 is a flip-up component with second hinge holes symmetrically arranged on the left and right sides of its bottom end, corresponding to the positions of the first hinge holes. Two pivots 23 pass through the first and second hinge holes respectively, hinged to the stool board 22 and the stool frame 21. The pivots 23 are made of stainless steel or carbon steel, with a diameter matching the hinge holes, and are galvanized or blackened to prevent corrosion. Each pivot 23 is fitted with a torsion spring, which is a helical torsion spring. The two arms of the torsion spring abut against the stool frame 21 and the stool board 22 respectively. Specifically, one arm abuts against the inner wall limiting protrusion of the stool frame 21, and the other arm abuts against the bottom limiting groove of the stool board 22. When the stool 22 is in the folded state, the torsion spring is in the pre-compressed state, storing elastic potential energy; when the user flips the stool 22 downward, the torsion spring twists further to store energy; when the user releases the stool 22, the torsion spring releases energy, driving the stool 22 to automatically flip upward and reset, realizing the automatic folding function.

[0051] Specifically, the snap-fit ​​groove 24 is provided on the top outer surface of the stool frame 21.

[0052] In actual production, more durable spring structures or damping hinges can be used to replace torsion springs.

[0053] The folding shoe-changing stool 3 also includes a limiting pull rope 25. The limiting pull rope 25 consists of two ropes, symmetrically arranged on the left and right sides of the stool frame 21. One end of each limiting pull rope 25 is fixed to a connecting hole on the left or inner wall of the stool frame 21 by a rivet or screw, and the other end is connected to the corresponding side of the stool board 22. The limiting pull rope 25 is made of nylon braided tape or polyester rope, with a breaking strength of not less than 80 kg. When the stool board 22 is flipped downwards to the unfolded state, the limiting pull rope 25 is gradually tightened, reaching full tension when near the horizontal position, thereby limiting the flipping angle of the stool board 22 and keeping it stably in a near-horizontal working position. This prevents the stool board 22 from continuing to flip downwards due to user pressure, improving seating stability and comfort.

[0054] The folding shoe-changing stool 3 also includes an auxiliary unfolding pull rope 26. This pull rope 26 addresses the problem of the folding shoe-changing stool 3 becoming difficult to open after prolonged use due to dust accumulation or excessive torsion spring preload. One end of the pull rope 26 is fixed to the bottom surface of the stool panel 22 near the free end (i.e., the end away from the pivot 23) by heat fusion or adhesive bonding, while the other end extends outwards with an exposed length of 10m to 30m for easy hooking by the user's fingers. When the user needs to use the shoe-changing stool, they can directly pull the auxiliary unfolding pull rope 26 outwards, using leverage to overcome the torsion spring preload, allowing the stool panel 22 to flip downwards smoothly for easy opening. This design is particularly suitable for elderly people or users with limited strength, significantly improving the human-computer interaction experience.

[0055] Although the auxiliary unfolding pull rope 26 is exposed when the folding shoe bench 3 is in the folded state, the auxiliary unfolding pull rope 26 is flat and flexible, so it will not affect the overall appearance of the security door.

[0056] The stool 22 includes a stool board body and a soft seat cover. The stool board body is made of ABS plastic, aluminum alloy, or cold-rolled steel, with a smooth surface, and supports the seat cover. The seat cover is made of EVA foam, sponge, or silicone material, with a thickness of 10mm to 20mm, providing good resilience and comfort. The seat cover is fitted onto the stool board body via elastic edges, which have elastic bands or webbing to tightly cover the upper surface and side edges of the stool board body, preventing slippage. The upper surface of the seat cover may have an anti-slip texture, raised particles, or fabric surface to enhance friction and prevent the user from slipping. The seat cover is removable and washable for easy daily maintenance and hygiene.

[0057] In actual production, this invention adopts a modular assembly process. The folding shoe-changing stool 3, as an independent functional module, is purchased from a supplier or centrally produced; only its external dimensions, snap-fit ​​structure, and mounting slot need to be ensured to match. During the production of the security door, the door body 2 is processed and manufactured first, and then the folding shoe-changing stool 3 is quickly installed into the mounting slot using a snap-fit ​​method, without the need for additional fasteners. This process simplifies production line operation and improves assembly efficiency.

[0058] The significant advantages of this utility model are: (1) Only the inner door panel is modified locally, without modifying the outer mold, thus saving costs; (2) The folding shoe bench 3 is assembled independently and can be disassembled as a whole during maintenance, with no limitation on maintenance space, making it easy to replace easily damaged parts such as torsion springs; (3) It integrates a number of humanized designs such as automatic reset, limit pull rope 25, auxiliary unfolding, and soft cushion, with complete functions; (4) The overall structure is compact and does not affect the original strength and security of the anti-theft door, and has good market promotion value.

[0059] To enhance the strength of door body 2, reinforcing ribs are added to the inner side of the outer door panel at the position corresponding to the mounting groove.

[0060] In summary, this utility model, through ingenious structural design and reasonable process arrangement, realizes a household security door with high functional integration, convenient use, simple maintenance, and controllable cost, fully meeting the needs of humanized home products.

Claims

1. A household security door, characterized in that, include: Door frame (1), door body (2), and folding shoe-changing stool (3); One side of the door body (2) is hinged to one side of the door frame (1); The lower part of the inner side of the door (2) is provided with a mounting groove that is recessed inward toward the inside of the door (2); The folding shoe-changing stool (3) is embedded in the mounting groove, so that when the folding shoe-changing stool (3) is in the folded state, its outer surface is in the same plane as the inner surface of the door (2); The top wall of the mounting groove is provided with an elastic sealing strip (4); The slot at the top of the mounting groove is provided with a snap-fit ​​block (5); The outer surface of the snap-fit ​​block (5) is in the same plane as the inner surface of the door body (2); The outer surface of the top of the folding shoe changing stool (3) is provided with a snap-fit ​​groove (24) that is compatible with the snap-fit ​​block (5). The folding shoe changing stool (3) is installed in the mounting groove by the snap-fit ​​of the snap-fit ​​block (5) and the snap-fit ​​groove (24).

2. A household security door according to claim 1, characterized in that, The folding shoe-changing stool (3) includes a stool frame (21) and a stool board (22); The bottom end of the stool frame (21) is provided with first hinge holes on both sides symmetrically; The bottom end of the stool (22) is provided with second hinge holes on both sides symmetrically; Two pivots (23) pass through the first hinge hole and the second hinge hole respectively, hinge the stool board (22) to the stool frame (21); Each pivot (23) is fitted with a torsion spring, one arm of which abuts against the stool frame (21) and the other arm abuts against the stool board (22), to provide a restoring force for the flipping of the stool board (22).

3. A household security door according to claim 2, characterized in that, The snap-fit ​​groove (24) is provided on the top outer surface of the stool frame (21).

4. A household security door according to claim 1, characterized in that, The height of the snap-fit ​​block (5) is 1-2 cm and the thickness is 2-4 mm.

5. A household security door according to claim 2, characterized in that, The folding shoe-changing stool (3) also includes a limiting pull rope (25); One end of the limiting pull rope (25) is connected to the inner wall of the stool frame (21), and the other end is connected to the side of the stool board (22); When the stool (22) is flipped downwards to the unfolded state, the limiting rope (25) is tightened to limit the flipping angle of the stool (22) and keep it stably in a near-horizontal working position.

6. A household security door according to claim 5, characterized in that, The limiting pull rope (25) is provided in two strands, which are symmetrically arranged on the left and right sides of the stool frame (21); One end of each of the limiting pull ropes (25) is connected to the inner wall of the stool frame (21), and the other end is connected to the corresponding side of the stool board (22).

7. A household security door according to claim 2, characterized in that, The folding shoe-changing stool (3) also includes an auxiliary unfolding pull rope (26); One end of the auxiliary unfolding pull rope (26) is connected to the bottom surface of the stool (22) away from the pivot (23), so that the user can pull it to open the folding shoe-changing stool (3).

8. A household security door according to claim 2, characterized in that, The bench (22) includes a bench body and a soft seat cover; The seat cover is fitted onto the stool board with an elastic edge, covering its upper surface and side edges.

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