Paint-free door
Through the assembly structure and sealing plate design, the problem of debonding, deformation and cracking of the PVC film of the paint-free door is solved, and low-cost repair and efficient sealing and sound insulation effects are achieved.
Patent Information
- Application Number
- CN202422960937.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-02
AI Technical Summary
The PVC film of existing paint-free doors is prone to debonding, deformation, and cracking when the ambient temperature and humidity change, making repair difficult and costly.
The door adopts an assembled structure design. The door body is hinged to the door frame through hinges. The composite panels are installed in the structural cavity and sealed with sealing panels. When damaged, only the door body needs to be replaced and the composite panels can be reused.
It reduces the repair cost of paint-free doors, improves the sealing effect, enhances the stability of the door and the sound insulation and noise reduction performance, and has the advantages of energy saving and environmental protection.
Smart Images

Figure CN223482536U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of interior design, and in particular to a paint-free door. Background Technology
[0002] Paint-free doors, as the name suggests, are wooden doors that do not require further painting. Most existing paint-free doors are made by vacuum forming a PVC veneer on solid wood composite doors and molded doors, with the door frame also using a PVC veneer finish. Paint-free doors avoid the release of harmful substances from paint, such as formaldehyde and benzene, making them an ideal choice for environmentally conscious consumers. Furthermore, their surfaces can be decorated with various materials and processes, such as PVC film and melamine board, offering a wide variety of styles to meet the individual needs of different consumers.
[0003] However, when using existing paint-free doors, the PVC film on the surface is prone to delamination, deformation, or cracking due to the influence of ambient temperature and humidity. At the current technology level, repairing the PVC film on the surface of paint-free doors is quite difficult, requiring the customization and replacement of the entire paint-free door, which incurs high repair costs and needs to be improved. Utility Model Content
[0004] Based on this, this application provides a paint-free door, which is assembled into a whole door body, and can quickly and easily replace damaged parts when glue peeling, deformation or cracking occurs, with low repair costs.
[0005] The paint-free door provided in this application adopts the following technical solution:
[0006] A paint-free door includes a door frame, a door body, and multiple composite panels. The door body is hinged to the door frame. The hinge side of the door body has several structural chambers, and each composite panel is installed in a corresponding structural chamber. A sealing plate is detachably fixed at the opening of each structural chamber. The sealing plate abuts against one of the composite panels and forces the composite panels to abut against each other.
[0007] By adopting the above technical solution, this application can manufacture the entire door body by installing each composite panel into its respective structural chamber and sealing the opening of the corresponding structural chamber with a sealing plate. Since the sealing plate is installed on the hinge side of the door body, it is difficult to remove after the door body is installed on the door frame, which is beneficial for the normal use of the paint-free door. When the PVC film on the surface of the door body delaminates or cracks, the door body can be detached from the door frame by removing the hinges, and then the sealing plate and each composite panel can be removed sequentially. The functional composite panels can be reused, requiring only the damaged door body to be replaced, which helps reduce the repair cost of the paint-free door and has the advantages of energy saving and environmental protection.
[0008] Optionally, the side of the composite panel is provided with a snap-fit part, and the inner wall of the structural chamber is provided with an inner groove, and the snap-fit part and the inner groove are slidably adapted to each other; the side of the door body is provided with a structural area connected to the structural chamber, and when the reset plate is installed in the structural chamber, the reset plate and the structural area are directly opposite each other.
[0009] By adopting the above technical solution, when the composite panel is installed in the structural cavity, the interlocking of the snap-fit part and the inner groove can make the composite panel stably located inside the structural cavity, reducing the occurrence of the composite panel falling out of the structural area; in addition, the setting of the structural area allows users to visually observe the composite panel, thereby making the surface of the paint-free door more three-dimensional and layered, which is conducive to market promotion.
[0010] Optionally, an elastic sealing strip is embedded in the inner wall of the construction chamber, and the elastic sealing strip is arranged around the outer edge of the construction area.
[0011] By adopting the above technical solution, the setting of the elastic sealing strip can improve the sealing effect between the composite board and the inner wall of the structural cavity, reduce the possibility of air moisture entering the interior of the structural cavity from the structural area, and thus reduce the occurrence of delamination or deformation and cracking of the PVC film on the surface of the composite board.
[0012] Optionally, the composite panel includes two solid wood panels and a steel grating panel disposed between the two solid wood panels. The steel grating panel has internal mesh grooves, and each mesh groove is filled with a first sound insulation cotton.
[0013] By adopting the above technical solution, solid wood panels are set on both outer sides of the composite board, serving as decorative surfaces and suitable for PVC veneer. The steel grating between the two solid wood panels provides excellent structural strength, improving the impact resistance and collision resistance of the composite board and the entire door body. The grid grooves help reduce the weight of the composite board, while the first sound insulation cotton provides excellent sound insulation for the paint-free door, enhancing indoor comfort.
[0014] Optionally, the hinge side of the door body is provided with an installation groove that communicates directly with the structural cavity. The sealing plate includes an abutment part that matches the shape of the structural cavity and a sealing part that matches the shape of the installation groove. When the sealing part is installed in the installation groove, the abutment part abuts against one of the composite plates and forces each composite plate to abut against each other.
[0015] By adopting the above technical solution, the sealing part of the sealing plate is matched and installed in the mounting groove, the abutting part can abut against one of the composite plates, and force the composite plates in the structural cavity to abut against each other, so that each composite plate can maintain good stability inside the structural cavity.
[0016] Optionally, the bottom of the door body is provided with a T-shaped slot, and a sound insulation strip can be detachably installed inside the T-shaped slot. The sound insulation strip is attached to the ground base and is in a normally retracted state.
[0017] By adopting the above technical solution, the soundproofing strip, after being installed in the T-shaped slot of the door body, can normally rest against the ground base and be in a retracted state, thereby blocking the gap between the door body and the ground base and achieving the effect of sound insulation and noise reduction; the T-shaped slot can reduce the possibility of the soundproofing strip accidentally detaching from the door body.
[0018] Optionally, the soundproofing strip has a hollow cavity in the middle for deformation avoidance, and the hollow cavity is filled with a second soundproofing cotton.
[0019] By adopting the above technical solution, the second sound insulation cotton installed in the hollow cavity can enhance the sound insulation and noise reduction effect of the sound insulation strip. When the sound insulation strip is normally in a state of tension and contraction, the second sound insulation cotton is squeezed and becomes denser, which can provide elastic support and has a better sound insulation effect.
[0020] Optionally, the soundproof barrier strip has a cleaning part on the side away from the door body that contacts the ground base. There are two cleaning parts, which are symmetrically arranged and tilted in opposite directions.
[0021] By adopting the above technical solution, when the user pushes the door body to open or close the door, the cleaning unit can move foreign objects, dirt and other garbage on the ground base together, reducing the possibility of garbage accumulating at the bottom of the sound insulation strip and making cleaning easier.
[0022] In summary, this application includes at least one of the following beneficial technical effects:
[0023] 1. When the PVC film on the surface of the door body delaminates or deforms and cracks, the functional composite board can be reused. Only the damaged door body needs to be replaced, which helps to reduce the repair cost of the paint-free door and has the advantages of energy saving and environmental protection.
[0024] 2. By setting an elastic sealing strip, the sealing effect between the composite panel and the inner wall of the structural cavity can be improved, reducing the possibility of air moisture entering the interior of the structural cavity from the structural area, thereby reducing the occurrence of delamination or deformation and cracking of the PVC film on the surface of the composite panel.
[0025] 3. By setting a soundproofing strip, the soundproofing strip can be normally pressed against the ground base and in a retracted state after being installed in the T-shaped groove of the door body, thereby blocking the gap between the door body and the ground base and achieving the effect of sound insulation and noise reduction. Attached Figure Description
[0026] Figure 1This is a schematic diagram of the overall structure of an embodiment of this application;
[0027] Figure 2 This is a schematic diagram of the installation of the composite plate and the sealing plate in the embodiments of this application;
[0028] Figure 3 This is a structural schematic diagram of the composite plate component in the embodiments of this application;
[0029] Figure 4 This is a partial structural diagram of the door body in an embodiment of this application, mainly showing the structure of the elastic sealing strip;
[0030] Figure 5 This is a partial schematic diagram of the bottom position of the door body in an embodiment of this application, mainly showing the structure of the sound insulation strip.
[0031] Explanation of reference numerals in the attached drawings: 1. Door frame panel; 11. Hinge; 2. Door body; 21. Structural chamber; 22. Inner groove; 23. Mounting groove; 24. Structural area; 25. Elastic sealing strip; 26. T-shaped slot; 3. Composite panel; 31. Connecting part; 32. Solid wood panel; 33. Steel grating panel; 331. Grid groove; 34. First sound insulation cotton; 4. Sealing plate; 41. Abutting part; 42. Sealing part; 43. Fastener; 5. Sound insulation strip; 51. Hollow chamber; 52. Second sound insulation cotton; 53. Cleaning part. Detailed Implementation
[0032] The following is combined with Figure 1-5 This application is described in further detail.
[0033] This application discloses a paint-free door.
[0034] Reference Figure 1 A paint-free door includes a door frame plate 1, a door body 2, and multiple composite panels 3. The surfaces of the door body 2 and the composite panels 3 are all covered with PVC film. The door frame plate 1 is located at the entrance of the building foundation, and one edge of the door body 2 is hinged to the door frame plate 1 by a hinge 11 for opening and closing the paint-free door.
[0035] Reference Figure 2 It should be noted that the side of the door body 2 where the hinge 11 is installed is the hinge side of the door body 2. The hinge side of the door body 2 has several structural chambers 21, and each composite panel 3 is installed in each structural chamber 21. Each structural chamber 21 has a sealing plate 4 that is detachably fixed at the opening of the chamber by fasteners 43. The sealing plate 4 abuts against one of the composite panels 3 and forces each composite panel 3 to abut against each other.
[0036] Simultaneously refer to Figure 1In this embodiment, the number of structural chambers 21 is set to two, and they are arranged at intervals. The number of composite panels 3 installed inside each structural chamber 21 is two. It is understood that in other feasible embodiments, the number of structural chambers 21 may also be three, four, or five, and the number of composite panels 3 in a single structural chamber 21 may also be three, four, or five, not as shown in this embodiment.
[0037] Specifically, refer to Figure 3 The composite panel 3 includes two solid wood panels 32 and a steel grating 33 disposed between the two solid wood panels 32. The steel grating 33 is connected and fixed to the adjacent solid wood panels 32 by adhesive bonding. The width of the steel grating 33 is greater than the width of the solid wood panels 32. After the solid wood panels 32 and the steel grating 33 are bonded together, the two opposite sides of the steel grating 33 can partially protrude from the solid wood panels 32, thus forming a snap-fit portion 31; simultaneously referring to… Figure 2 The two opposite inner sidewalls of the structure chamber 21 are respectively provided with inner grooves 22. The width of the inner groove 22 is equal to the width of the snap-fit part 31, and the two are in clearance fit, so that the snap-fit part 31 can be matched and inserted into the inner groove 22 and slide along the opening direction of the inner groove 22.
[0038] Back Figure 3 The steel grating panel 33 has a grid groove 331 inside, and each grid groove 331 runs through the two opposite sides of the steel grating panel 33. Each grid groove 331 is filled with a first sound insulation cotton 34, which can improve the sound insulation and noise reduction effect of the composite panel 3 after installation, thereby improving the comfort of the indoor environment.
[0039] Back Figure 2 The hinge side of the door body 2 is provided with an installation groove 23 that is directly connected to the opening of the structural chamber 21. The sealing plate 4 includes an integrally formed abutment part 41 and a sealing part 42, wherein the shape of the sealing part 42 is the same as the shape of the installation groove 23, and the shape of the abutment part 41 is the same as the shape of the structural chamber 21. By installing the sealing plate 4 in the installation groove 23, the sealing plate 4 is fixed to the step surface of the installation groove 23 and the structural chamber 21 using fasteners 43. At this time, the abutment part 41 can abut against one of the composite plates 3 and force each composite plate 3 to abut against each other; the other composite plate 3 can abut against the inner wall of the structural chamber 21, thereby making each composite plate 3 securely installed inside the structural chamber 21.
[0040] Reference Figure 4The side of the door body 2 is provided with a structural area 24, which can communicate with the structural chamber 21. In this embodiment, the number of structural areas 24 is equal to the number of composite panels 3, and two structural areas 24 are connected to one structural chamber 21. After the composite panels 3 are securely installed in the structural chamber 21, each composite panel 3 can be directly opposite to each structural chamber 21. In addition, an elastic sealing strip 25 is embedded in the inner wall of the structural chamber 21. The elastic sealing strip 25 is arranged around the outer edge of the structural area 24. After the composite panels 3 are installed, the elastic sealing strip 25 can elastically deform and press against the composite panels 3, thereby improving the sealing effect between the composite panels 3 and the inner wall of the structural chamber 21 and reducing the possibility of air moisture entering the interior of the structural chamber 21 from the structural area 24.
[0041] Reference Figure 5 The bottom of the door body 2 has a T-shaped slot 26, and a soundproof strip 5 can be detachably installed inside the T-shaped slot 26. In this embodiment, the soundproof strip 5 can be made of silicone rubber or foam material. The soundproof strip 5 has a hollow cavity 51 in the middle, which can serve as a deformation space for the soundproof strip 5, thus avoiding deformation. The hollow cavity 51 is filled with a second soundproof cotton 52 to enhance the sound insulation and noise reduction effect of the soundproof strip 5. After the paint-free door is installed, the soundproof strip 5 can be pressed against the ground base and is in a retracted state.
[0042] The soundproof barrier 5 has a cleaning part 53 on the side away from the door body 2 that contacts the ground base. There are two cleaning parts 53, which are symmetrically arranged along the center line of the soundproof barrier 5 and are inclined in opposite directions. When the user pushes the door body 2 to open or close the door, the cleaning part 53 can move foreign objects, dirt and other garbage on the ground base together, reducing the possibility of garbage accumulating at the bottom of the soundproof barrier 5 and making it easier to clean.
[0043] The implementation principle of a paint-free door in this application embodiment is as follows:
[0044] This application can produce the entire door body 2 by installing each composite panel 3 into each structural cavity 21 and sealing the opening of the corresponding structural cavity 21 with a sealing plate 4. Since the sealing plate 4 is installed on the hinge side of the door body 2, the sealing plate 4 is difficult to remove after the door body 2 is installed on the door frame plate 1, which is beneficial to the normal use of the paint-free door.
[0045] When the PVC film on the surface of the door body 2 is peeling off or deformed and cracked, the door body 2 can be detached from the door frame 1 by removing the hinge 11. Then, the sealing plate 4 and each composite panel 3 can be removed in sequence. The functional composite panel 3 can be reused. Only the damaged door body 2 needs to be replaced, which helps to reduce the repair cost of the paint-free door and has the advantages of energy saving and environmental protection.
[0046] The above are preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A paint-free door, characterized in that: The door includes a door frame plate (1), a door body (2), and multiple composite panels (3). The door body (2) is hinged to the door frame plate (1) via a hinge (11). The hinge side of the door body (2) is provided with several structural chambers (21). Each composite panel (3) is installed in a corresponding structural chamber (21). A sealing plate (4) is detachably fixed at the opening of each structural chamber (21). The sealing plate (4) abuts against one of the composite panels (3) and forces each composite panel (3) to abut against each other.
2. The paint-free door according to claim 1, characterized in that: The composite panel (3) has a snap-fit part (31) on its side and an inner groove (22) on the inner wall of the structural chamber (21). The snap-fit part (31) and the inner groove (22) slide and adapt to each other. The side of the door body (2) has a structural area (24) that communicates with the structural chamber (21). When the composite panel (3) is installed in the structural chamber (21), the composite panel and the structural area (24) are facing each other.
3. The paint-free door according to claim 2, characterized in that: The inner wall of the structural chamber (21) is fitted with an elastic sealing strip (25), which is arranged around the outer edge of the structural area (24).
4. The paint-free door according to any one of claims 1-3, characterized in that: The composite panel (3) includes two solid wood panels (32) and a steel grating panel (33) disposed between the two solid wood panels (32). The steel grating panel (33) has a grid groove (331) inside, and each grid groove (331) is filled with a first sound insulation cotton (34).
5. The paint-free door according to claim 1, characterized in that: The hinge side of the door body (2) is provided with an installation groove (23) that is directly connected to the structural chamber (21). The sealing plate (4) includes an abutment part (41) that is adapted to the shape of the structural chamber (21) and a sealing part (42) that is adapted to the shape of the installation groove (23). When the sealing part (42) is installed in the installation groove (23), the abutment part (41) abuts against one of the composite plates (3) and forces each composite plate (3) to abut against each other.
6. The paint-free door according to claim 1, characterized in that: The bottom of the door body (2) is provided with a T-shaped slot (26), and a sound insulation strip (5) is detachably installed inside the T-shaped slot (26). The sound insulation strip (5) is attached to the ground foundation and is in a normal retracted state.
7. The paint-free door according to claim 6, characterized in that: The soundproof barrier (5) has a hollow cavity (51) in the middle for deformation avoidance, and the hollow cavity (51) is filled with a second soundproof cotton (52).
8. The paint-free door according to claim 6, characterized in that: The soundproof barrier (5) has a cleaning part (53) on the side away from the door body (2) that is in contact with the ground foundation. There are two cleaning parts (53), which are symmetrically arranged and inclined in opposite directions.