Door body structure
By incorporating a sealing structure between the door leaf and the door frame, and employing a multi-layered panel design, the problem of insufficient sound insulation performance in traditional wooden doors is solved, achieving a highly efficient sound insulation effect for the door structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING PAIDAO TONGCHUANG E-COMMERCE CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-24
AI Technical Summary
Traditional wooden doors have limitations in sound insulation performance, making it difficult to meet the increased sound insulation requirements of modern living and working environments.
By setting a sealing structure between the door leaf and the door frame, sealing around the door leaf, and combining a multi-layer board design including polyester fiber sound-absorbing board, aerogel sound-absorbing board, damping sound insulation board, rubber sound insulation pad and felt board, the sound insulation performance of the door is improved.
It significantly improves the sound insulation performance of the door, effectively reduces noise transmission, and meets the requirements of stability and smooth opening and closing in complex environments.
Smart Images

Figure CN224549959U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of interior door technology, specifically to a door structure. Background Technology
[0002] In the construction industry, wooden doors have long held an important position in various settings, including residential and commercial buildings, thanks to their natural aesthetic appeal, excellent processing performance, and relatively gentle touch. However, as people's demands for the quality of their living and working environments continue to rise, the limitations of traditional wooden doors in terms of sound insulation performance are becoming increasingly apparent. Utility Model Content
[0003] The purpose of this utility model is to provide a door structure that improves the sound insulation performance of the door structure.
[0004] This utility model provides a door structure, which includes a door frame, a door leaf, and a sealing structure. The sealing structure can be arranged around the door leaf and can be pressed between the door frame and the door leaf along the thickness direction of the door leaf.
[0005] The technical solution in this application improves the sound insulation performance of the door structure by using a sealing structure that can be set around the door leaf to seal the gap between the door leaf and the door frame around the door leaf.
[0006] Optionally, the door frame includes a threshold at the bottom of the door leaf, a horizontal door stop at the top of the door leaf, and vertical door stops on the two sides of the door leaf, wherein the threshold, the horizontal door stop, and the two vertical door stops are connected to form a closed loop structure.
[0007] Optionally, the door leaf has a first groove;
[0008] The threshold includes a first threshold and a second threshold. The height of the first threshold from the ground is greater than that of the second threshold from the ground. The first threshold blocks the door leaf along the thickness direction of the door leaf, and the second threshold can be located in the first groove.
[0009] Optionally, a partial sealing structure is provided between the side wall of the first sill and the door leaf.
[0010] Optionally, the portion where the first sill and the second sill meet is provided with a second groove that is recessed along the height direction of the door leaf. A partial sealing structure is fixed in the second groove, and the partial sealing structure extends out of the second groove and can abut against the door leaf.
[0011] Optionally, a partial sealing structure is provided between the side of the second sill away from the first sill and the first groove.
[0012] Optionally, the first groove has a first groove wall and a second groove wall, and the portion where the first groove wall and the second groove wall meet is provided with a first groove that is concave in the height direction; a partial sealing structure is fixed in the first groove, and the partial sealing structure extends out of the first groove and can abut against the second sill.
[0013] Optionally, the door frame also includes a door casing, with horizontal and vertical door stops located on the side of the door casing closest to the door leaf.
[0014] Optionally, the door leaf includes two decorative panels distributed along the thickness direction, with a first panel disposed between the two decorative panels;
[0015] A second plate, a felt plate, and a third plate are arranged sequentially from the outside to the inside between the first plate and the decorative plate on the corresponding side. The second plate is in contact with the decorative plate, the third plate is in contact with the first plate, and the felt plate is filled between the second plate and the third plate.
[0016] Other features and advantages of this specification will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description
[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of this specification and, together with their description, serve to explain the principles of this specification.
[0018] Figure 1 This is a partial cross-sectional view of the gate structure along the horizontal direction;
[0019] Figure 2 This is a vertical cross-sectional view of the door structure. Detailed Implementation
[0020] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.
[0021] Relational terms such as “first” and “second” are used merely to distinguish one component from another that has the same name, without necessarily requiring or implying any such actual relationship or order between the components.
[0022] Please refer to Figure 1 and Figure 2 , Figure 1 This is a partial cross-sectional view of the gate structure along the horizontal direction; Figure 2 This is a vertical cross-sectional view of the door structure.
[0023] like Figure 1 and Figure 2As shown, this utility model provides a door structure, which includes a door frame 1, a door leaf 2, and at least one sealing structure 3. The sealing structure 3 can be arranged around the door leaf 2. The sealing structure 3 can be pressed between the door frame 1 and the door leaf 2 along the thickness direction of the door leaf 2.
[0024] The technical solution in this application uses a sealing structure 3 that can be set around the door leaf 2 to seal the gap between the door leaf 2 and the door frame 1 around the door leaf 2, thereby improving the sound insulation performance of the door structure.
[0025] In such Figure 1 In the illustrated configuration, a doorway (not shown) is provided in the wall. A door frame 1 is provided at the edge of the doorway. The door frame 1 may include a door sleeve 15, which partially covers the top and sides of the doorway. A door stop 16 is provided on the door sleeve 15, located on the side of the door sleeve 15 closest to the door leaf 2. The door stop 16 is located in front of the door leaf 2 in the closing direction. When the door leaf 2 is in the closed position, it can indirectly abut against the door stop 16 along its thickness direction. A sealing structure 3 is provided between the surfaces of the door stop 16 that abut against the door leaf 2. When the door leaf 2 is in the closed position, the sealing structure 3 presses against the door leaf 2 and the door stop 16.
[0026] The door stop 16 includes a horizontal door stop at the top of the door leaf 2 and two vertical door stops on the side of the door leaf 2. The vertical door stops are connected to the two ends of the horizontal door stop to form a door-shaped structure.
[0027] like Figure 2 As shown, the door frame 1 also includes a threshold 10 disposed at the bottom of the door leaf 2, and the threshold 10 is fixed to the ground. The two ends of the threshold 10 in the horizontal direction can be connected to the door stop 16 to form a closed loop structure that can surround the door leaf 2. The sealing structure 3 at the bottom of the door leaf 2 is fixedly connected to the threshold 10 or fixedly connected to the door leaf 2, and can be connected to the sealing structures 3 located at the top and sides of the door leaf 2 when the door leaf 2 is in the closed position.
[0028] In this embodiment, the sealing structure 3 is a rubber sealing ring, which can be fixed to the door leaf 2 and / or door frame 1 by means of adhesive bonding or other methods.
[0029] In such Figure 1 In the example shown, the door leaf 2 and the door frame 1 are spaced apart to form a channel 22 connecting the two sides of the door leaf. The channel 22 is arranged around the door leaf 2 and extends along the thickness direction of the door leaf 2. The channel 22 is provided with at least one sealing structure 3. The sealing structure 3 is provided in the extending direction of the channel 22, with one end abutting against the door leaf 2 and the other end abutting against the door frame 1.
[0030] Therefore, the sealing structure can separate the channel 22, thereby separating the two sides of the door leaf 2 and improving the sound insulation performance of the door leaf 2.
[0031] In such Figure 1 In the example shown, a door stop 16 is provided on a portion of the door frame 15. A portion of the side wall of the door leaf 2 is spaced apart from the door frame 15, and a portion of the side wall is spaced apart from the door stop 16. The two spaces are connected, thus forming the aforementioned passage 22. One side of the sealing structure 3 abuts against the door stop 16, and the other side abuts against the door leaf 2.
[0032] In such Figure 2 In the example shown, part of the bottom wall of the door leaf 2 is spaced from the ground, and part of the bottom wall is spaced from the threshold 10. These two gaps constitute the aforementioned partial passage 22. One side of the sealing structure 3 abuts against the threshold 10, and the other side abuts against the door leaf.
[0033] In some other embodiments of this application, at least two sealing structures 3 are provided along the extension direction of the channel 22, and the sealing structures 3 are spaced apart along the extension direction of the channel 22.
[0034] By setting at least two sealing structures 3 that can be arranged around the door leaf 2, the sealing performance of the door leaf 2 can be further improved.
[0035] In such Figure 1 In the example shown, a second groove 161 is formed on the side of the door stop 16 near the door leaf 2, and the second groove 161 penetrates the first baffle 16a and the second baffle 16b of the door stop 16. The first baffle 16a is the surface of the door stop 16 opposite to the door leaf 2 along the thickness direction of the door leaf 2, and the second baffle 16b is the surface opposite to the door leaf 2 along the width direction of the door leaf 2. The second groove 161 also includes a third groove wall 161a extending along the width direction of the door leaf 2 and a fourth groove wall 161b extending along the thickness direction of the door leaf 2, and the third groove wall 161a and the fourth groove wall 161b are perpendicular to each other.
[0036] The door leaf 2 has a first groove 21 that is adapted to the second groove 161, and the first groove 21 is arranged around the door leaf 2. The second groove 161 and the first groove 21 are inserted into each other. However, the walls of the second groove 161 and the first groove 21 are spaced apart, thereby forming the aforementioned partial channel 22.
[0037] The door leaf 2 has a first surface 23a, which is opposite to the third groove wall 161a along the thickness direction, and a sealing structure 3 is disposed between the first surface 23a and the third groove wall 161a.
[0038] The first groove 21 also has a first groove wall 21a that is opposite to the first baffle 16a in the thickness direction, and another sealing structure 3 is provided between the first groove wall 21a and the first baffle 16a.
[0039] like Figure 2As shown, the first groove 21 also includes a second groove wall 21b perpendicular to the first groove wall 21a, and the second groove wall 21b extends along the thickness direction.
[0040] The threshold 10 includes a first threshold 11 and a second threshold 12. The height of the first threshold 11 from the ground is greater than the height of the second threshold 12 from the ground, and the second threshold 12 can be located within the first groove 21. Through the height difference design between the first threshold 11 and the second threshold 12, the door leaf 2 can automatically adjust its closing position according to the flatness of the ground, ensuring that the second threshold 12 is always embedded in the first groove 21, thus balancing sound insulation stability and smooth opening and closing in complex environments.
[0041] The threshold 10 also has a groove structure. The side wall 11a of the first threshold 11, facing the first groove wall 21a, extends along the height direction of the door leaf 2 and forms one groove wall of the groove structure. The top wall 12a of the second threshold 12 is opposite to the second groove wall 21b along the height direction and extends along the thickness direction. The top wall 12a of the second threshold 12 is along another groove wall that forms the groove structure. The side wall 12b of the second threshold 12 is opposite to the first groove wall 21a along the thickness direction and is perpendicular to the top wall 12a of the second threshold 12.
[0042] A sealing structure 3 is provided between the side wall 11a of the first sill 11 and the first surface 23a of the door leaf 2, located at the bottom of the door leaf 2. Another sealing structure 3 is provided between the side wall 12b of the second sill 12 and the second groove wall 21a of the first groove 21, located at the bottom of the door leaf 2.
[0043] Therefore, two sealing structures 3 can be set between the door frame 1 and the door leaf 2, thereby further improving the sound insulation performance of the door leaf 2.
[0044] In one specific embodiment, the portion where the first sill 11 and the second sill 12 meet is provided with a second groove 121 that is recessed downwards along the height direction, and a partial sealing structure 3 is fixed within the second groove 121. The partial sealing structure 3 extends out from the second groove 12 and abuts against the side wall 11a of the first sill 11 along the thickness direction. This allows the sealing structure 3 provided on the sill 10 to be fixed.
[0045] like Figure 1 As shown, a third groove 161c is provided at the position where the third groove wall 161a and the fourth groove wall 161b of the second groove 161 meet. The third groove 161c is recessed outward along the width direction of the door leaf 2. Part of the sealing structure 3 is built into the third groove 161c and fixed to the third groove 161c, while part of it is exposed from the third groove 161c and located between the first surface 23a of the door leaf 2 and the third groove wall 161a.
[0046] In another embodiment, such as Figure 1 and Figure 2 As shown, a first groove 21c is provided at the position where the first groove wall 21a and the second groove wall 21b of the first groove 21 of the door leaf meet. Part of the sealing structure 3 is built into the first groove 21c, and part of it extends out of the first groove 21c and is located between the first groove wall 21a and the first baffle wall 16a.
[0047] In this way, the sealing structure 3 can be fixed in the set position.
[0048] In the aforementioned embodiments, the door leaf 2 includes two decorative panels 23 distributed along the thickness direction, with a first panel 24 between the two decorative panels 23, and a second panel 25 disposed between the first panel 24 and the corresponding decorative panel 23; a third panel 27 is disposed between the second panel 25 and the first panel 24, and a felt board 26 is disposed between the third panel 27 and the second panel 25. By setting multiple layers of panels, noise reduction and sound insulation for different frequency bands can be achieved, thereby further improving the sound insulation performance of the door structure.
[0049] In this embodiment, the sound insulation performance of the door leaf 2 is further improved by modifying its structure. Specifically, as follows: Figure 1 As shown, the door leaf 2 includes two decorative panels 23, one of which is closer to the door stop 16, and the outer surface of the decorative panel 23 serves as the aforementioned first surface 23a. At least partially, a receiving cavity is formed between the two decorative panels 23, and a first plate 24 is disposed within the receiving cavity. The first plate 24 has a center line s1 extending along the width direction of the door leaf 2, passing through the midpoint of the width direction of the door leaf 2. Furthermore, the center line s1 coincides with the center line s2 of the door leaf 2.
[0050] A gap is formed between the first plate 24 and the corresponding decorative plate 23. Within this gap, the second plate 25, the felt plate 26, and the third plate 27 are arranged sequentially from the outside to the inside. Along the thickness direction of the door leaf 2, the plates on both sides of the first plate 24 are arranged symmetrically with respect to the center line s1.
[0051] In a specific example, the first plate 24 has the largest dimension along the thickness direction of the door leaf 2. The first plate 24 is, for example, a polyester fiber sound-absorbing plate, an aerogel sound-absorbing plate, etc., and achieves sound insulation effect based on the dissipation effect of sound waves by the internal porous structure.
[0052] The second board 25 abuts against the decorative board 23. The second board 25 is, for example, a high-density fiberboard or a damping sound insulation board. Based on the mass law, the greater the material density and surface density, the stronger the ability to block sound waves and thus achieve sound insulation effect.
[0053] The third plate 27 abuts against the first plate 24. The third plate 27 is, for example, a rubber sound insulation pad or a polyurethane foam buffer layer. Through the deformation and internal friction of highly elastic and highly damping materials, the transmission efficiency of sound waves is reduced, thereby achieving a sound insulation effect.
[0054] A felt board 26 is also provided between the second plate 25 and the third plate 27. The felt board 26 can be a general-purpose sound insulation felt based on ethylene-propylene-diene terpolymer or ethylene propylene diene rubber. Those skilled in the art can choose for themselves.
[0055] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.
Claims
1. A door structure, characterized in that, The device includes a door frame, a door leaf located inside the door frame, and at least one sealing structure, the sealing structure being disposed around the door leaf; the sealing structure being compressible between the door frame and the door leaf along the thickness direction of the door leaf.
2. The door structure according to claim 1, characterized in that, The door frame includes a threshold at the bottom of the door leaf, a horizontal door stop at the top of the door leaf, and vertical door stops on the two sides of the door leaf. The threshold, the horizontal door stop, and the two vertical door stops are connected to form a closed loop structure.
3. The door structure according to claim 2, characterized in that, The door leaf has a first groove; The threshold includes a first threshold and a second threshold, the first threshold being higher than the second threshold being higher than the second threshold being higher than the ground; the first threshold blocks the door leaf along the thickness direction of the door leaf, and the second threshold can be located within the first groove.
4. The door structure according to claim 3, characterized in that, A partial sealing structure is provided between the side wall of the first threshold and the door leaf.
5. The door structure according to claim 4, characterized in that, The portion where the first threshold and the second threshold meet is provided with a second groove that is recessed along the height direction of the door leaf. A portion of the sealing structure is fixed in the second groove, and the portion of the sealing structure extends out of the second groove and can abut against the door leaf.
6. The door structure according to claim 3, characterized in that, A partial sealing structure is provided between the side of the second sill away from the first sill and the first groove.
7. The door structure according to claim 6, characterized in that, The first groove has a first groove wall and a second groove wall. The portion where the first groove wall and the second groove wall meet is provided with a first groove that is concave in the height direction. A portion of the sealing structure is fixed in the first groove. The portion of the sealing structure extends out of the first groove and can abut against the second threshold.
8. The door structure according to any one of claims 2-6, characterized in that, The door frame also includes a door sleeve, and the horizontal door stop and the vertical door stop are disposed on the side of the door sleeve near the door leaf.
9. The door structure according to claim 8, characterized in that, The door panel includes two decorative panels distributed along the thickness direction, and a first panel is disposed between the two decorative panels; A second plate, a felt plate, and a third plate are arranged sequentially from the outside to the inside between the first plate and the decorative plate on the corresponding side. The second plate is in contact with the decorative plate, the third plate is in contact with the first plate, and the felt plate is filled between the second plate and the third plate.