Arc-shaped door frame integrated wooden door

By screwing in the crushing and squeezing pins and the interference fit with the door frame, and by using a torsion spring to pre-tighten the ventilation plate, the problem of unstable splicing structure of curved wooden doors is solved, thereby improving structural stability and sealing performance, extending service life and eliminating the influence of air pressure difference.

CN224379668UActive Publication Date: 2026-06-19BAOTAILONG DOOR IND CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BAOTAILONG DOOR IND CO LTD
Filing Date
2025-06-30
Publication Date
2026-06-19

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  • Figure CN224379668U_ABST
    Figure CN224379668U_ABST
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Abstract

This utility model relates to an integrated wooden door with an arc-shaped frame. It features a door frame, a soundproof strip, a cover plate, a locking block, a pressing pin, screws, a door leaf, a hinge, and a door lock. The door frame is fixed to the wall. A locking block is connected to the rear side of the cover plate. A groove is formed on the front side of the door frame, into which the locking block is inserted, allowing the door frame and cover plate to engage. A pressing pin is placed inside the door frame. Screws are threadedly connected to the cover plate and locking block, and the pressing pin engages with the door frame via the screws. A hinge is connected to the rear side of the door frame, and the door leaf is rotatably connected to the cover plate via the hinge. A door lock is installed inside the door leaf, connecting the door frame and door leaf. A soundproof strip is connected to the inner ring of the door frame, and the outer ring of the door leaf fits against the soundproof strip. The advantage is that by screwing in the screws to crush the pressing pin, the pressing pin undergoes radial plastic deformation, forming an interference fit with the inner wall of the door frame. This achieves rigid anchoring between the cover plate and the door frame, ultimately solving the problem of deformation and cracking caused by adhesive failure in the splicing structure and extending the service life.
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Description

Technical Field

[0001] This utility model relates to the field of building door and window manufacturing technology, and in particular to an integrated wooden door with an arc-shaped door frame. Background Technology

[0002] Wooden doors, as a core component for separating and decorating interior and exterior spaces, enjoy a wide audience and application base in various places such as residential, commercial, and public buildings due to their natural texture, warm feel, environmental protection characteristics, and excellent sound insulation and heat preservation performance. Solid wood doors, solid wood composite doors, and other types of wooden door products have always occupied an important share of the door market thanks to the natural beauty of the materials themselves and their durability.

[0003] Existing wooden door products are showing a trend towards diversification in shape design. Among them, rectangular wooden doors occupy a mainstream market position due to their simple structure, convenient processing, and mature installation. However, to meet the needs of personalization, artistic design, or specific spatial structures, curved wooden doors have also emerged. For these curved wooden doors, both the door frame and the main body of the door leaf need to be designed and manufactured with specific curvatures that match each other, together forming a complete curved doorway and door appearance.

[0004] While curved wooden doors meet specific aesthetic and spatial needs, existing technological solutions generally have significant drawbacks. Most curved wooden doors on the market today, whether for the frame or the door leaf, are not naturally curved from a single piece of wood or a single component. Instead, they are assembled from multiple straight or slightly curved profiles using mortise and tenon joints, nails, or extensive glue bonding. This process, relying on splicing and gluing, while achieving a curved appearance to some extent, inevitably leads to inherent weaknesses in the overall structure: the joints are susceptible to changes in environmental temperature and humidity, material stress release, or external forces, posing a risk of cracking, deformation, and delamination. This severely affects the structural stability, sealing performance, and lifespan of the door, and also poses a potential threat to the product's aesthetics and safety. Utility Model Content

[0005] The technical problem to be solved by this utility model is the instability of the splicing structure. It provides an integrated wooden door with an arc-shaped door frame, which aims to solve the above problem.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: an integrated wooden door with an arc-shaped door frame, including a door frame, a soundproof strip, a cover plate, a locking block, a pressing pin, screws, a door leaf, a hinge, and a door lock. The door frame is fixed in the wall. A locking block is connected to the back of the cover plate. A groove is opened on the front of the door frame. The locking block is inserted into the groove. The door frame and the cover plate are engaged. A pressing pin is placed inside the door frame. Screws are threadedly connected to the cover plate and the locking block. The pressing pin is pressed against the door frame through the screws. A hinge is connected to the back of the door frame. The cover plate is rotatably connected to the door leaf through the hinge. A door lock is installed inside the door leaf. The door lock is used to connect the door frame and the door leaf. A soundproof strip is connected to the inner ring of the door frame. The outer ring of the door leaf is fitted with the soundproof strip.

[0007] A further preferred embodiment of this utility model is as follows: it also includes a fixed base, a ventilation plate and a torsion spring. A through hole is opened at the bottom of the door leaf. A fixed base is connected to the bottom front side of the door leaf. The fixed base is rotatably connected to the ventilation plate. Torsion springs are sleeved on both ends of the rotating shaft of the ventilation plate and the fixed base. One end of the torsion spring is connected to the ventilation plate and the other end is connected to the fixed base.

[0008] A further preferred embodiment of this utility model is: it also includes a buffer assembly, which includes a sleeve, a return spring and a top block. The sleeve is connected to the bottom rear side of the door leaf, and the top block is slidably connected to the sleeve. A return spring is provided inside the sleeve, with one end of the return spring connected to the door leaf and the other end connected to the top block.

[0009] A further preferred embodiment of this utility model is: it also includes an anti-slip mat, and the handle of the door lock is covered with an anti-slip mat.

[0010] A further preferred embodiment of this utility model is: it also includes a sealing gasket, and the outer ring of the door leaf is fitted with a sealing gasket.

[0011] A further preferred embodiment of this utility model is: it also includes a buffer sleeve, and the top block end is connected to the buffer sleeve.

[0012] A further preferred embodiment of this utility model is: it also includes a protective shell, the protective shell is connected to the front side of the door leaf, and the protective shell covers the fixing seat and the torsion spring.

[0013] A further preferred embodiment of this utility model is: it also includes a decorative cover, with a decorative cover provided at the front end of each screw, and the front side of the decorative cover is flush with the front side of the cover plate.

[0014] Compared with the prior art, the advantages of this utility model are: by screwing in the crushing and squeezing pin, the squeezing pin undergoes radial plastic deformation, forming an interference fit with the inner wall of the door frame, thereby achieving rigid anchoring of the cover plate and the door frame, ultimately solving the problem of deformation and cracking caused by adhesive failure in the splicing structure and extending the service life; through the ventilation plate pre-tightened by the torsion spring, the air pressure difference can drive the ventilation plate to automatically open and close around the fixed seat, achieving instantaneous balance of internal and external air pressure, ultimately eliminating the door opening resistance caused by air pressure difference and avoiding the risk of expansion of the splicing seam of traditional arc door due to air pressure impact. Attached Figure Description

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the installation structure of the hinge and cover plate of this utility model;

[0018] Figure 3 This is a sectional view showing the connection relationship between the door frame and the card block of this utility model;

[0019] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle;

[0020] Figure 5 This is a schematic diagram of the installation structure of the torsion spring and ventilation plate of this utility model;

[0021] Figure 6 This is an exploded view of the buffer assembly of this utility model;

[0022] Figure 7 This is a schematic diagram showing the connection relationship between the anti-slip mat and the sealing gasket of this utility model.

[0023] In the diagram: 1. Door frame, 101. Soundproof strip, 2. Cover plate, 3. Locking block, 4. Groove, 5. Pressing pin, 6. Screw, 7. Door leaf, 8. Hinge, 9. Door lock, 10. Fixing base, 11. Ventilation plate, 12. Torsion spring, 13. Buffer assembly, 1301. Sleeve, 1302. Return spring, 1303. Top block, 14. Anti-slip pad, 15. Sealing gasket, 16. Buffer sleeve, 17. Protective shell, 18. Aesthetic cover. Detailed Implementation

[0024] The preferred embodiments of the present invention will now be described in detail 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.

[0025] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0026] This embodiment mainly describes the structure of the wooden door, as follows:

[0027] Curved door frame integrated wooden door, such as Figures 1-7 As shown, the device includes a door frame 1, a soundproof strip 101, a cover plate 2, a locking block 3, a pressing pin 5, a screw 6, a door leaf 7, a hinge 8, and a door lock 9. The door frame 1 is fixed to the wall. The cover plate 2 has a locking block 3 connected to its rear side. The front side of the door frame 1 has a groove 4, into which the locking block 3 is inserted. The door frame 1 and the cover plate 2 are engaged. A pressing pin 5 is placed inside the door frame 1. The screw 6 is threadedly connected to the cover plate 2 and the locking block 3, and the pressing pin 5 is pressed against the door frame 1 by the screw 6. The cover plate 2 is pre-positioned by the insertion of the locking block 3 into the groove 4 of the door frame 1. When the screw 6 is screwed in, it crushes the middle of the squeezing pin 5, causing it to expand radially and lock the inner wall of the door frame 1, forming a rigid connection. A hinge 8 is connected to the rear side of the door frame 1. The cover plate 2 is rotatably connected to the door leaf 7 through the hinge 8. A door lock 9 is installed inside the door leaf 7. The door lock 9 is used to connect the door frame 1 and the door leaf 7. A soundproof strip 101 is connected to the inner ring of the door frame 1. The outer ring of the door leaf 7 is attached to the soundproof strip 101.

[0028] like Figure 1 and Figure 5 As shown, it also includes a fixed base 10, a ventilation plate 11, and a torsion spring 12. The bottom of the door leaf 7 has a through hole, and the fixed base 10 is connected to the bottom front side of the door leaf 7. The fixed base 10 is rotatably connected to the ventilation plate 11. Torsion springs 12 are sleeved on both ends of the rotating shaft of the ventilation plate 11 and the fixed base 10. One end of the torsion spring 12 is connected to the ventilation plate 11, and the other end is connected to the fixed base 10. When the room is under positive pressure, the airflow pushes open the ventilation plate 11 and compresses the torsion spring 12 to release pressure. When the room is under negative pressure, the plate is manually lifted to balance the air pressure, and the torsion spring 12 automatically resets and seals.

[0029] like Figure 2 and Figure 6As shown, it also includes a buffer assembly 13, which includes a sleeve 1301, a return spring 1302, and a top block 1303. The sleeve 1301 is connected to the bottom rear side of the door leaf 7, and the top block 1303 is slidably connected to the sleeve 1301. The return spring 1302 is provided inside the sleeve 1301. One end of the return spring 1302 is fixed to the bottom of the sleeve 1301, and the other end is connected to the top block 1303. When the door collides, the buffer sleeve 16 contacts the wall, pushing the top block 1303 to slide inside the sleeve 1301, compressing the return spring 1302, and converting kinetic energy into elastic potential energy.

[0030] like Figure 2 and Figure 7 As shown, it also includes an anti-slip pad 14. The handle of the door lock 9 is covered with an anti-slip pad 14, which increases the friction coefficient of the handle and improves the grip.

[0031] like Figure 7 As shown, it also includes a sealing gasket 15. The outer ring of the door leaf 7 is fitted with a sealing gasket 15, which fills the door gap.

[0032] like Figure 2 As shown, it also includes a buffer sleeve 16. The top block 1303 is connected to the end of the buffer sleeve 16, which is made of rubber to protect the wall paint layer.

[0033] like Figure 1 As shown, it also includes a protective housing 17. The protective housing 17 is connected to the front side of the door leaf 7. The protective housing 17 covers the fixing base 10 and the torsion spring 12.

[0034] like Figure 1 and Figure 4 As shown, it also includes a decorative cover 18. Each screw 6 has a decorative cover 18 at its front end. The outer surface of the decorative cover 18 is coplanar with the surface of the cover plate 2.

[0035] There is usually a gap between the wall and the door frame 1. After filling the gap with expanding foam, the cover plate 2 is used to completely seal the gap with the wall. The worker inserts the clip 3 into the groove 4 to complete the pre-positioning of the cover plate 2. At this time, screw 6 is screwed in. Screw 6 passes through the threaded holes of the cover plate 2 and the clip 3 in sequence, and the end presses against the compression pin 5. After screwing in, the head of screw 6 crushes the middle of the compression pin 5, forcing the material of the compression pin 5 to expand radially in all directions. The expanded compression pin 5 forms an interference fit with the inner wall of the door frame 1, forming a mechanical interlock. Then, through the stable connection between screw 6 and compression pin 5, the cover plate 2 is stably connected to the door frame 1. Then, the decorative cover 18 is attached to seal the mounting holes of screw 6 and also protect the cross groove at the end of screw 6 to prevent rust or corrosion. The door lock 9 is installed in the door leaf 7. Then, the door leaf 7 is installed through the hinge 8 to firmly connect the door leaf 7 to the door frame 1, completing the installation of the entire wooden door.

[0036] During use, the side of the door leaf 7 that opens contacts the wall. After the buffer sleeve 16 is pressed against the wall, the pressure is transmitted to the return spring 1302 through the top block 1303, thereby compressing the return spring 1302. The top block 1303 slides in the sleeve 1301 to reduce hard impact and protect the wall and wooden door. When the door is opened or closed, if the room is airtight and not ventilated, the temperature difference between the inside and outside will make the gas pressure in the room high. When the door is opened, the gas in the room will push the ventilation plate 11. The ventilation plate 11 will rotate around the fixed seat 10 and twist the torsion spring 12. The gas will be discharged from the through hole at the bottom of the door leaf 7. If the external air pressure is high, the ventilation plate 11 can be manually lifted. After the internal and external pressures are balanced, the door can be opened. After the internal and external air pressures are close, the torsion spring 12 will release the torque to reset, and the ventilation plate 11 will be tightly attached to the door leaf 7.

[0037] The anti-slip pad 14 tightly wraps around the handle surface of the door lock 9, increasing grip stability by increasing the coefficient of friction. The sound-dampening strip 101 is continuously laid along the inner ring of the door frame 1; when the door leaf 7 is closed, its outer ring flexibly contacts the sound-dampening strip 101 to form an acoustic seal. The sealing gasket 15 surrounds the outer edge of the door leaf 7, filling the tiny gap between the door leaf 7 and the door frame 1 when closed, blocking airflow and sound wave transmission. The protective housing 17 completely encloses the fixing base 10 and the torsion spring 12, preventing external foreign objects from interfering with the operation of the ventilation plate 11 mechanism.

[0038] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] The above provides a detailed description of the integrated curved door frame wooden door provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand this utility model and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. An integrated wooden door with an arc-shaped frame, characterized in that: The door frame (1), soundproof strip (101), cover plate (2), locking block (3), pressing pin (5), screw (6), door leaf (7), hinge (8), and door lock (9) are included. The door frame (1) is fixed to the wall. The cover plate (2) is connected to the back of the locking block (3). The front of the door frame (1) has a groove (4). The locking block (3) is inserted into the groove (4). The door frame (1) and the cover plate (2) are engaged. The pressing pin (5) and screw (6) are placed inside the door frame (1). The cover plate (2) and the locking block (3) are threaded together, and the pressing pin (5) is pressed into the door frame (1) by the screw (6). The door frame (1) is connected to the rear side of the hinge (8). The cover plate (2) is rotatably connected to the door leaf (7) by the hinge (8). The door leaf (7) is installed with a door lock (9). The door lock (9) is used to connect the door frame (1) and the door leaf (7). The inner ring of the door frame (1) is connected to the soundproof strip (101). The outer ring of the door leaf (7) is attached to the soundproof strip (101).

2. The integrated wooden door with an arc-shaped door frame according to claim 1, characterized in that: It also includes a fixed base (10), a ventilation plate (11) and a torsion spring (12). The bottom of the door leaf (7) has a through hole. The fixed base (10) is connected to the bottom front side of the door leaf (7). The fixed base (10) is rotatably connected to the ventilation plate (11). The two ends of the rotating shaft of the ventilation plate (11) and the fixed base (10) are fitted with torsion springs (12). One end of the torsion spring (12) is connected to the ventilation plate (11), and the other end is connected to the fixed base (10).

3. The integrated wooden door with an arc-shaped door frame according to claim 2, characterized in that: It also includes a buffer assembly (13), which includes a sleeve (1301), a reset spring (1302) and a top block (1303). The sleeve (1301) is connected to the bottom rear side of the door leaf (7), and the top block (1303) is slidably connected to the sleeve (1301). The reset spring (1302) is provided inside the sleeve (1301). One end of the reset spring (1302) is connected to the door leaf (7), and the other end is connected to the top block (1303).

4. The integrated wooden door with an arc-shaped door frame according to claim 3, characterized in that: It also includes an anti-slip mat (14), and the handle of the door lock (9) is fitted with an anti-slip mat (14).

5. The integrated wooden door with an arc-shaped door frame according to claim 4, characterized in that: It also includes a sealing gasket (15), and the outer ring of the door leaf (7) is fitted with a sealing gasket (15).

6. The integrated wooden door with an arc-shaped door frame according to claim 5, characterized in that: It also includes a buffer sleeve (16), and the top block (1303) has a buffer sleeve (16) connected to its end.

7. The integrated wooden door with an arc-shaped door frame according to claim 6, characterized in that: It also includes a protective shell (17), the front side of the door leaf (7) is connected to the protective shell (17), and the protective shell (17) covers the fixing seat (10) and the torsion spring (12).

8. The integrated wooden door with an arc-shaped door frame according to claim 7, characterized in that: It also includes a decorative cover (18), with a decorative cover (18) provided at the front end of each screw (6), and the front side of the decorative cover (18) is flush with the front side of the cover plate (2).