A new skeletal door panel

Abstract

The utility model discloses a novel skeleton door board, include: core plate and set in the frame of core plate four around, connect the frame with core plate, along the front -back direction, the outer plate face is parallel to the cover plate face, and the outer plate face is connected with the modeling surface and forms the skeleton line, and the appearance of door board is increased, and the inclined plane of modeling surface facilitates the door board after being put into use and is pulled open and serves as the door board handle, and the practicality is improved, the outer plate face is equipped with the back of one side away from the modeling surface, and the back is the rectangular plane of extending along the up -and -down direction, and the fillet surface that is equipped between the outer plate face and the back, avoids the user knock -injury or the deformation of door board in the use process that the right angle that the back and the outer plate face directly connect forms causes, and the splicing mark after the frame is connected with core plate can not be exposed, effectively avoids the situation that the splicing mark produces in the use process of door board and the problem that the edge sealing peels and cracks, effectively prolongs the service life of skeleton line door board, and the practicality is improved.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, specifically to a novel skeleton door panel. Background Technology

[0002] In the past two years, skeleton-style door panels have become increasingly popular in home customization, becoming one of the mainstream choices for mid-to-high-end custom cabinets. Created through grooves and inlaid lines, they enhance the sense of three-dimensionality and order, and come in various styles, exuding a sophisticated feel. Originating from traditional European architectural and decorative concepts, skeleton-style door panels use three-dimensional lines to divide space, blending the sense of order of classical architecture with modern minimalist aesthetics. Their core feature lies in using 18mm thick lines (skeleton lines) as a structural framework, forming a three-dimensional grid frame on the door panel surface through 45° beveled splicing or interlocking connections. This design breaks through the monotony of traditional flat doors, giving the cabinet surface a multi-layered visual effect. Simultaneously, some skeleton lines can replace handles, achieving a unity of decoration and practicality. Skeleton-style door panels generally use a 9mm base plate as a carrier, forming an extremely narrow frame through 45° beveled splicing, requiring a 155° special hinge to achieve a large opening angle; or, prefabricated 18mm transparent panels can be embedded in the cabinet gaps and fixed with structural adhesive to achieve a frameless effect.

[0003] In existing particleboard substrates, expansion is common in humid environments, leading to cracking at the joints between the core board and the ribbed core. Stress concentration occurred at the 45° bevel joint; after 5000 opening and closing tests, 12% of the samples showed microcracks of 0.2 mm.

[0004] Chinese patent application (application number: 202411439427.1, application date: 2024.10.15) discloses a paint-free skeleton-line door panel production line and production process. Specifically, it discloses using a roller conveyor to transport the skeleton lines to an adhesive applicator, with the bottom surface of the conveyed skeleton lines facing upwards, and using the adhesive applicator to apply adhesive to the bottom surface of the skeleton lines; transferring the door panel to a bonding device, and using a bonding device to bond the adhesive-applied skeleton lines to the door panel, and forming an adhesive layer between the skeleton lines and the door panel after static curing, thus obtaining the skeleton-line door panel; transporting the skeleton-line door panel to an edge banding machine, and using the edge banding machine to seal the four edges of the skeleton-line door panel, directly bonding the skeleton lines to the door panel and then applying edge banding strips. However, during use, it is prone to moisture absorption, cracking, and deformation.

[0005] Therefore, it is necessary to provide a new type of skeleton door panel that will not produce splicing marks due to different water absorption and expansion when exposed to moisture, and can avoid edge peeling and cracking. Utility Model Content

[0006] In view of this, the present invention provides a novel skeleton door panel, comprising: a core panel and a frame disposed around the core panel;

[0007] The core board includes an inner surface and an outer surface that are arranged opposite to each other in the front-back direction. The core board is provided with a fixing groove on all four sides. The fixing groove includes a connecting surface and a locking surface. The connecting surface is an inclined surface that slopes from the edge of the outer surface of the core board toward the inside of the core board. The locking surface is an inclined surface that slopes from the inner surface of the core board toward the inside of the core board. The angle between the connecting surface and the locking surface is an obtuse angle.

[0008] The frame is bonded to the core board. The frame includes side sealing blocks symmetrically arranged in the left-right direction and top and bottom sealing blocks symmetrically arranged in the up-down direction. The side sealing blocks and top sealing blocks are connected by a 45° splicing method. The joint between the side sealing blocks and top sealing blocks has a 45° angle with the left-right and up-down directions. The joint between the side sealing blocks and bottom sealing blocks has a 45° angle with the left-right and up-down directions. The side sealing blocks extend in the up-down direction, and the top and bottom sealing blocks extend in the left-right direction. In the front-back direction, the thickness of the core board is less than the thickness of the side sealing blocks, top sealing blocks, or bottom sealing blocks.

[0009] The side, top, and bottom edge sealing blocks of the frame have identical structures. Each block consists of a fixed surface, a cover surface, a shaped surface, an outer panel surface, rounded corners, and a back surface, forming a pentagonal prism. The side of the prism that contacts the core board has a fixed surface, which is embedded into the fixing groove of the core board. The fixed surface includes a bonding surface, an anti-detachment surface, and a cover surface. The bonding surface is bonded to the connecting surface, the anti-detachment surface is bonded to the locking surface, and the cover surface is bonded to the outer surface. The bonding surface is an inclined surface that slopes inward from the edge of the frame near the inner surface, with an acute angle between its extension direction and the left-right direction. The anti-detachment surface is an inclined surface that slopes inward from the edge of the frame near the outer surface of the core board towards the inner surface of the frame. The bonding surface and the anti-detachment surface... The included angle is obtuse; the cover plate surface is connected to the anti-detachment surface on the side away from the bonding surface along the front-back direction. The cover plate surface is a plane that is in contact with the outer surface of the core board, and the included angle between the cover plate surface and the anti-detachment surface is acute; the cover plate surface on the side away from the anti-detachment surface is provided with a shaped surface, which is an inclined surface that slopes from the side of the side sealing block away from the outer surface towards the protruding surface, and the included angle between the shaped surface and the cover plate surface is acute; the shaped surface on the side away from the cover plate surface is provided with an outer plate surface. Along the front-back direction, the outer plate surface is parallel to the cover plate surface, and the included angle between the outer plate surface and the shaped surface and the included angle between the shaped surface and the cover plate surface are complementary angles; the outer plate surface on the side away from the shaped surface is provided with a back surface, which is a rectangular plane extending in the up-down direction. A rounded corner surface is provided between the outer plate surface and the back surface, and the rounded corner surface is an arc-shaped surface.

[0010] Optionally, the angle between the extension direction of the bonding surface and the left-right direction is 50°-65°.

[0011] Optionally, the angle between the bonding surface and the anti-detachment surface is 91°-105°.

[0012] Optionally, the angle between the cover plate surface and the anti-slip surface is 10°-40°.

[0013] Optionally, the angle between the shaped surface and the cover plate surface is 35°-55°.

[0014] Optionally, the angle between the outer panel and the shaped surface is 125°-145°.

[0015] Optionally, the angle between the connecting surface and the outer surface is smaller than the angle between the engaging surface and the inner surface.

[0016] Compared with the prior art, the novel skeletal door panel provided by this utility model achieves at least the following beneficial effects:

[0017] This application provides a novel skeleton door panel, comprising: a core panel and a frame disposed around the core panel; each of the four sides of the core panel is provided with a fixing groove, the fixing groove connecting the frame and the core panel, the fixing groove including a connecting and engaging surface, the included angle of the connecting and engaging surface being an obtuse angle; the frame is bonded to the core panel, facilitating replacement of the frame when damaged, effectively saving costs; the frame includes side sealing blocks symmetrically arranged in the left-right direction and top and bottom sealing blocks symmetrically arranged in the up-down direction, the side sealing blocks and top sealing blocks being connected by a 45° splicing method, the side sealing blocks extending in the up-down direction, and the top and bottom sealing blocks extending in the left-right direction; along the front-back direction, the core panel... The thickness of the board is less than that of the side, top, or bottom edge banding blocks, which helps to form a skeletal line and increases aesthetics; the side, top, and bottom edge banding blocks of the frame have identical structures; all three are cubic; the side edge banding blocks are formed by a fixed surface, a cover surface, a shaped surface, an outer panel surface, rounded corners, and a back surface; the side of the side edge banding block that is attached to the core board has a fixed surface, which is embedded in the fixing groove of the core board; the fixed surface includes a bonding surface, an anti-detachment surface, and a cover surface; the bonding surface is attached to the connecting surface, the anti-detachment surface is attached to the locking surface, and the cover surface is attached to the outer surface; the angle between the extension direction of the bonding surface and the left-right direction is an acute angle; the bonding surface and the anti-detachment surface... The included angle between the surfaces is an obtuse angle; the cover plate surface connects to the anti-detachment surface on the side away from the bonding surface along the front-to-back direction. The cover plate surface is a plane that adheres to the outer surface of the core board. Under the premise that the bonding surface and the connecting surface are adhered, and the snap-fit ​​surface and the anti-detachment surface are adhered and bonded, the outer surface of the core board is partially attached to the cover plate surface of the frame, which helps to improve the stability of the connection between the frame and the core board and will not expose the traces of the connection between the core board edge and the frame; the included angle between the cover plate surface and the anti-detachment surface is an acute angle; the side of the cover plate surface away from the anti-detachment surface is provided with a shaping surface, and the included angle between the shaping surface and the cover plate surface is an acute angle; the side of the shaping surface away from the cover plate surface is provided with an outer plate surface. Along the front-to-back direction, the outer plate surface is parallel to the cover plate surface, and the connection between the outer plate surface and the shaping surface forms a skeleton line, increasing... While enhancing the aesthetics of the door panel, the beveled surface of the design allows the door panel to be pulled open and used as a handle after it is put into use, improving practicality. The outer panel has a back surface on the side away from the design surface. The back surface is a rectangular plane extending vertically. The rounded corners between the outer panel and the back surface prevent right angles formed by the direct connection between the back and the outer panel, which could cause user injury or door panel deformation during use. After the frame and core panel of the new skeleton-line door panel of this application are connected, the splicing marks will not be exposed, effectively avoiding the splicing marks caused by different water absorption and expansion during the use of the door panel, as well as the problem of edge peeling and cracking. This effectively extends the service life of the skeleton-line door panel and improves practicality.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all the technical effects described above at the same time.

[0019] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0021] Figure 1 This is a structural schematic diagram of a novel skeleton door panel provided by this utility model;

[0022] Figure 2 This is a structural diagram of the side sealing block;

[0023] Figure 3 This is a top view of a novel skeletal door panel provided by this utility model;

[0024] 100-Frame, 1-Side sealing block, 11-Laying surface, 12-Anti-detachment surface, 13-Cover plate surface, 14-Shaped surface, 15-Outer panel surface, 16-Rounded corner surface, 17-Back side, 3-Top sealing block, 4-Bottom sealing block, 200-Core board, 21-Connecting surface, 22-Mocking surface, 23-Outer surface, 24-Inner surface, Left-right direction - x, Front-back direction - y, Up-down direction - z. Detailed Implementation

[0025] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0026] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0027] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0028] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0030] Example 1

[0031] This utility model provides a novel skeleton door panel, referring to... Figures 1-3 It includes: a core board 200 and a frame 100 disposed around the core board 200;

[0032] The core board 200 includes an inner surface 24 and an outer surface 23 arranged opposite to each other in the front-rear direction y. The core board 200 is provided with fixing grooves on all four sides. The fixing grooves include a connecting surface 21 and a engaging surface 22. The connecting surface 21 is an inclined surface that slopes from the edge of the outer surface 23 of the core board 200 toward the interior of the core board 200. The engaging surface 22 is an inclined surface that slopes from the inner surface 24 of the core board 200 toward the interior of the core board 200. The angle between the connecting surface 21 and the engaging surface 22 is an obtuse angle.

[0033] The frame 100 is bonded to the core board 200. The frame 100 includes side sealing blocks 1 symmetrically arranged along the left-right direction x and top sealing blocks 3 and bottom sealing blocks 4 symmetrically arranged along the up-down direction z. The side sealing blocks 1 and top sealing blocks 3 are connected by a 45° splicing method, and the side sealing blocks 1 and bottom sealing blocks 4 are connected by a 45° splicing method. The joint of the side sealing blocks 1 and top sealing blocks 3 has a 45° angle with the left-right direction x and the up-down direction z, and the joint of the side sealing blocks 1 and bottom sealing blocks 4 has a 45° angle with the left-right direction x and the up-down direction z. The side sealing blocks 1 extend along the up-down direction z, and the top sealing blocks 3 and bottom sealing blocks 4 extend along the left-right direction x. Along the front-back direction y, the thickness of the core board 200 is less than the thickness of the side sealing blocks 1, top sealing blocks 3, or bottom sealing blocks 4.

[0034] The side sealing block 1, top sealing block 3, and bottom sealing block 4 of the frame 100 have identical structures. Each is a pentagonal prism formed by a fixed surface, cover plate surface 13, shaped surface 14, outer plate surface 15, rounded corner surface 16, and back surface 17. The side sealing block 1 has a fixed surface on the side that adheres to the core board 200, and the fixed surface is embedded in the fixing groove of the core board 200. The fixed surface includes a bonding surface 11, an anti-detachment surface 12, and a cover plate surface 13. The bonding surface 11 is an inclined surface that slopes inward from the edge of the frame 100 near the inner surface 24 towards the interior of the frame 100, and the angle between the extending direction of the bonding surface 11 and the front-back direction y is an acute angle. The anti-detachment surface 12 is an inclined surface that slopes inward from the edge of the frame 100 near the outer surface 23 of the core board 200 towards the inner surface 24 of the frame 100, and the angle between the bonding surface 11 and the anti-detachment surface 12 is an obtuse angle. The cover plate 13 is connected to the anti-detachment surface 12 on the side away from the bonding surface 11. The cover plate 13 is a plane that is bonded to the outer surface 23 of the core plate 200. The angle between the cover plate 13 and the anti-detachment surface 12 is an acute angle. The cover plate 13 on the side away from the anti-detachment surface 12 is provided with a shaping surface 14. The shaping surface 14 is an inclined surface that slopes from the side of the side sealing block 1 away from the outer surface 23 toward the protruding surface. The angle between the shaping surface 14 and the cover plate 13 is an acute angle. The shaping surface 14 on the side away from the cover plate 13 is provided with an outer plate surface 15. Along the front-back direction y, the outer plate surface 15 is parallel to the cover plate 13. The angle between the outer plate surface 15 and the shaping surface 14 and the shaping surface 14 and the cover plate 13 are complementary angles. The outer plate surface 15 on the side away from the shaping surface 14 is provided with a back surface 17. The back surface 17 is a rectangular plane that extends along the vertical direction z. A rounded corner surface 16 is provided between the outer plate surface 15 and the back surface 17.

[0035] Specifically, this utility model provides a novel skeleton door panel, referring to... Figures 1-3 It includes: a core board 200 and a frame 100 disposed around the core board 200;

[0036] The core board 200 includes an inner surface 24 and an outer surface 23 arranged opposite to each other in the front-rear direction y. The core board 200 is provided with fixing grooves on all four sides. The fixing grooves include a connecting surface 21 and a engaging surface 22. The connecting surface 21 is an inclined surface that slopes from the edge of the outer surface 23 of the core board 200 toward the interior of the core board 200. The engaging surface 22 is an inclined surface that slopes from the inner surface 24 of the core board 200 toward the interior of the core board 200. The angle between the connecting surface 21 and the engaging surface 22 is an obtuse angle.

[0037] It should be noted that the core board 200 includes an inner surface 24 and an outer surface 23 arranged opposite to each other in the front-back direction y. The inner surface 24 is the side of the door panel that is close to the inside of the cabinet when in use, and the outer surface 23 is the side of the door panel that is away from the inside of the cabinet when in use. The core board 200 is provided with fixing grooves on all four sides to facilitate connection with the frame 100.

[0038] The frame 100 is bonded to the core board 200. The frame 100 includes side sealing blocks 1 symmetrically arranged in the left-right direction x and top sealing blocks 3 and bottom sealing blocks 4 symmetrically arranged in the up-down direction z. The side sealing blocks 1 and top sealing blocks 3 are connected by a 45° splicing method, and the side sealing blocks 1 and bottom sealing blocks 4 are connected by a 45° splicing method. The side sealing blocks 1 extend in the up-down direction z, and the top sealing blocks 3 and bottom sealing blocks 4 extend in the left-right direction x. In the front-back direction y, the thickness of the core board 200 is less than the thickness of the side sealing blocks 1, top sealing blocks 3, or bottom sealing blocks 4.

[0039] It should be noted that side edge sealing block 1 and top edge sealing block 3 are connected by a 45° splicing method, as are side edge sealing block 1 and bottom edge sealing block 4. This 45° beveled splicing transforms the vertical force into a diagonal component, dispersing stress through a triangular stabilizing structure. Compared to right-angle splicing, this design reduces the risk of cracking at the joints due to long-term use or environmental changes (such as humidity and temperature fluctuations). Actual test data shows that after 5000 opening and closing tests, the width change of the 45° spliced ​​door panel joint is reduced by 40% compared to right-angle splicing; the beveled surface increases the adhesive contact area (approximately 30% higher than right-angle splicing), and when used with PUR hot melt adhesive or epoxy resin adhesive, a stronger adhesive layer can be formed. In humid environments, the water absorption and expansion rate at the seam of a 45° splice is 25% lower than that of a right-angle splice, effectively preventing edge banding from falling off. The 45° bevel cut can be processed with high precision (tolerance ±0.1mm) using CNC cutting machines, five-axis machining centers, etc., seamlessly integrating with existing edge banding machines, drilling machines, and other equipment. This reduces equipment investment costs; the bevel cut also reduces waste of scrap materials. Taking a standard door panel as an example, the utilization rate of the material with a 45° splice is 8%-12% higher than that with a right-angle splice; the 45° bevel cut seam forms a continuous V-shaped groove, perfectly matching the three-dimensional grid frame design of the skeleton-line door panel, enhancing the overall sense of layering. Right-angle splices easily create visual breaks, disrupting design uniformity.

[0040] The side edge sealing block 1, top edge sealing block 3 and bottom edge sealing block 4 of the frame 100 have the same structure, reducing processing costs and assembly difficulty. They are all pentagonal prisms formed by the fixed surface, cover plate surface, shaped surface, outer panel surface, rounded corner surface and back side. Compared with the use of patch edge sealing strips on the door panel edges in the existing technology, the edge sealing blocks have stronger wrapping properties and are not easy to fall off.

[0041] The side sealing block 1 is formed by a fixed surface, a cover surface 13, a shaped surface 14, an outer panel surface 15, a rounded corner surface 16, and a back surface 17. The side of the side sealing block 1 that is in contact with the core board 200 has a fixed surface, which is embedded into the fixing groove of the core board 200. The fixed surface includes a bonding surface 11, an anti-detachment surface 12, and a cover surface 13. The bonding surface 11 is an inclined surface that slopes inward from the edge of the frame 100 near the inner surface 24 towards the inside of the frame 100. The extending direction of the bonding surface 11... The angle between the anti-detachment surface 12 and the outer surface 23 of the core board 200 is acute; the anti-detachment surface 12 is an inclined surface that slopes from the side of the frame 100 near the outer surface 23 of the core board 200 towards the inner surface 24 of the frame 100 near the core board 200, and the angle between the bonding surface 11 and the anti-detachment surface 12 is obtuse; the cover surface 13 along the front-back direction y is connected to the side of the anti-detachment surface 12 away from the bonding surface 11, and the cover surface 13 is a plane that is bonded to the outer surface 23 of the core board 200; the angle between the cover surface 13 and the anti-detachment surface 12 is acute.

[0042] It should be noted that the cover plate 13 is a flat surface that fits against the outer surface 23 of the core plate 200. This helps to cover the adhesive marks between the fixing surface and the fixing groove, i.e., the mating surface 11 and the connecting surface 21, and the anti-detachment surface 12 and the snap-fit ​​surface 22. The bonding between the cover plate 13 and the new outer surface 23 prevents the connection between the frame 100 and the core plate 200 from being squeezed and deformed due to moisture in a humid environment during the subsequent use of the door panel. This can further improve the stability of the connection between the frame 100 and the core plate 200, and at the same time prevent deformation.

[0043] The cover plate surface 13 has a shaped surface 14 on the side away from the anti-detachment surface 12. The shaped surface 14 is an inclined surface that slopes from the side of the side sealing block 1 away from the outer surface 23 toward the protruding surface. The angle between the shaped surface 14 and the cover plate surface 13 is an acute angle. The shaped surface 14 has an outer plate surface 15 on the side away from the cover plate surface 13. Along the front-back direction y, the outer plate surface 15 is parallel to the cover plate surface 13. The angle between the outer plate surface 15 and the shaped surface 14 and the shaped surface 14 and the cover plate surface 13 are complementary angles. The outer plate surface 15 has a back surface 17 on the side away from the shaped surface 14. The back surface 17 is a rectangular plane that extends along the vertical direction z. A rounded corner surface 16 is provided between the outer plate surface 15 and the back surface 17.

[0044] It should be noted that the rounded corner 16 is formed by rounding the corners at the connection between the outer panel 15 and the back panel 17. This rounding process disperses impact force, transforming sharp edges into smooth arc surfaces, significantly reducing the probability of accidental injury. The rounded corner design of the skeleton-line door panel increases the contact area for the hand, reducing localized pressure concentration. Actual measurements show that the pressure distribution at the hand application point of a rounded corner handle is more than 30% more uniform than that of a right-angle handle, reducing fatigue over long-term use. The rounded corners eliminate dead angles, preventing dust and stains from accumulating. The rounded corner design reduces friction and scratches between the door panel edges and clothing or furniture, extending the lifespan of the door panel and surrounding items. The rounded corner treatment requires fine grinding or chamfering of the edges, a process that eliminates internal material stress and reduces the risk of cracking.

[0045] It is understood that the novel skeleton door panel provided in this application includes: a core panel 200 and a frame 100 disposed around the core panel 200; the core panel 200 is provided with fixing grooves around its perimeter, the fixing grooves connecting the frame 100 and the core panel 200, the fixing grooves including connecting and engaging surfaces 22, the included angle of the connecting and engaging surfaces 22 being an obtuse angle; the frame 100 is bonded to the core panel 200, facilitating replacement of the frame 100 when damaged, effectively saving costs; the frame 100 includes side sealing blocks 1 symmetrically arranged along the left-right direction x and top sealing blocks 3 and bottom sealing blocks 4 symmetrically arranged along the up-down direction z, the side sealing blocks 1 and top sealing blocks 3 are connected by a 45° splicing method, the side sealing blocks 1 and bottom sealing blocks 4 The side sealing block 1 is connected by a 45° splicing method; the side sealing block 1 extends along the vertical direction z, and the top sealing block 3 and bottom sealing block 4 extend along the horizontal direction x; along the front-back direction y, the thickness of the core board 200 is less than the thickness of the side sealing block 1, the top sealing block 3, or the bottom sealing block 4, which is conducive to forming a skeleton line and increasing aesthetics; the side sealing block 1, the top sealing block 3, and the bottom sealing block 4 of the frame 100 have the same structure; the side sealing block 1, the top sealing block 3, and the bottom sealing block 4 are all cubes; the side sealing block 1 is formed by a fixed surface, a cover surface 13, a shaping surface 14, an outer panel surface 15, a rounded corner surface 16, and a back surface 17. The side of the side sealing block 1 that is in contact with the core board 200 has a fixed surface, and the fixed surface and the core board 200 are connected by a fixed surface. The fixing groove of the core board 200 is embedded; the fixing surface includes a mating surface 11, an anti-detachment surface 12, and a cover surface 13. The mating surface 11 is mated to the connecting surface 21, the anti-detachment surface 12 is mated to the engaging surface 22, and the cover surface 13 is mated to the outer surface 23. The angle between the extending direction of the mating surface 11 and the front-rear direction y is an acute angle; the angle between the mating surface 11 and the anti-detachment surface 12 is an obtuse angle. The cover surface 13 is connected to the side of the anti-detachment surface 12 away from the mating surface 11 along the front-rear direction y. The cover surface 13 is a plane that is mated to the outer surface 23 of the core board 200. Under the premise that the mating surface 11 is mated to the connecting surface 21, and the engaging surface 22 is mated to the anti-detachment surface 12 and bonded, the outer surface 23 of the core board 200 is partially mated. The cover plate surface 13 of the frame 100 helps to improve the stability of the connection between the frame 100 and the core board 200, and will not expose the traces of the connection between the edge of the core board 200 and the frame 100; the angle between the cover plate surface 13 and the anti-detachment surface 12 is an acute angle; a shaped surface 14 is provided on the side of the cover plate surface 13 away from the anti-detachment surface 12, and the angle between the shaped surface 14 and the cover plate surface 13 is an acute angle; an outer plate surface 15 is provided on the side of the shaped surface 14 away from the cover plate surface 13. Along the front-back direction y, the outer plate surface 15 is parallel to the cover plate surface 13. The outer plate surface 15 and the shaped surface 14 are connected to form a skeleton line, which increases the aesthetics of the door panel. At the same time, the bevel of the shaped surface 14 makes it easy to open the door panel after the door panel is put into use, which can be used as a door panel handle, improving practicality.The outer panel 15 has a back surface 17 on the side away from the styling surface 14. The back surface 17 is a rectangular plane extending in the vertical direction z. A rounded corner surface 16 is provided between the outer panel 15 and the back surface 17 to avoid the right angle formed by the direct connection between the back surface 17 and the outer panel 15, which could cause user injury or deformation of the door panel during use. After the frame 100 and the core board 200 of the novel skeleton-line door panel of this application are connected, the splicing mark will not be exposed, effectively avoiding the splicing mark caused by different water absorption and expansion during the use of the door panel, as well as the problem of edge peeling and cracking, effectively extending the service life of the skeleton-line door panel and improving its practicality.

[0046] Example 2

[0047] This utility model provides a novel skeleton door panel, referring to... Figures 1-3 It includes: a core board 200 and a frame 100 disposed around the core board 200;

[0048] The core board 200 includes an inner surface 24 and an outer surface 23 arranged opposite each other in the front-rear direction y. A fixing groove is provided around all four sides of the core board 200. Each fixing groove includes a connecting surface 21 and a engaging surface 22. The connecting surface 21 is an inclined surface that slopes from the edge of the outer surface 23 of the core board 200 towards the interior of the core board 200. The engaging surface 22 is an inclined surface that slopes from the inner surface 24 of the core board 200 towards the interior of the core board 200. The angle between the connecting surface 21 and the engaging surface 22 is an obtuse angle. The frame 100 is bonded to the core board 200. The frame 100 includes side sealing blocks 1 symmetrically arranged along the left-right direction x and top sealing blocks 3 and bottom sealing blocks 4 symmetrically arranged along the up-down direction z. The side sealing blocks 1 and top sealing blocks 3 are connected by a 45° splicing method, and the side sealing blocks 1 and bottom sealing blocks 4 are connected by a 45° splicing method. The side sealing blocks 1 extend along the up-down direction z, and the top sealing blocks 3 and bottom sealing blocks 4 extend along the left-right direction x. Along the front-back direction y, the thickness of the core board 200 is less than the thickness of the side sealing blocks 1, top sealing blocks 3, or bottom sealing blocks 4.

[0049] The side sealing block 1, top sealing block 3, and bottom sealing block 4 of the frame 100 have identical structures. Each is a pentagonal prism formed by a fixed surface, cover plate surface 13, shaped surface 14, outer plate surface 15, rounded corner surface 16, and back surface 17. The side sealing block 1 has a fixed surface on the side that adheres to the core board 200, and the fixed surface is embedded in the fixing groove of the core board 200. The fixed surface includes a bonding surface 11, an anti-detachment surface 12, and a cover plate surface 13. The bonding surface 11 is an inclined surface that slopes inward from the edge of the frame 100 near the inner surface 24 towards the interior of the frame 100, and the angle between the extending direction of the bonding surface 11 and the front-back direction y is an acute angle. The anti-detachment surface 12 is an inclined surface that slopes inward from the edge of the frame 100 near the outer surface 23 of the core board 200 towards the inner surface 24 of the frame 100, and the angle between the bonding surface 11 and the anti-detachment surface 12 is an obtuse angle. The cover plate 13 is connected to the anti-detachment surface 12 on the side away from the bonding surface 11. The cover plate 13 is a plane that is bonded to the outer surface 23 of the core plate 200. The angle between the cover plate 13 and the anti-detachment surface 12 is an acute angle. The cover plate 13 on the side away from the anti-detachment surface 12 is provided with a shaping surface 14. The shaping surface 14 is an inclined surface that slopes from the side of the side sealing block 1 away from the outer surface 23 toward the protruding surface. The angle between the shaping surface 14 and the cover plate 13 is an acute angle. The shaping surface 14 on the side away from the cover plate 13 is provided with an outer plate surface 15. Along the front-back direction y, the outer plate surface 15 is parallel to the cover plate 13. The angle between the outer plate surface 15 and the shaping surface 14 and the shaping surface 14 and the cover plate 13 are complementary angles. The outer plate surface 15 on the side away from the shaping surface 14 is provided with a back surface 17. The back surface 17 is a rectangular plane that extends along the vertical direction z. A rounded corner surface 16 is provided between the outer plate surface 15 and the back surface 17.

[0050] Specifically, this utility model provides a novel skeleton door panel, referring to... Figures 1-3 It includes: a core board 200 and a frame 100 disposed around the core board 200;

[0051] The core board 200 includes an inner surface 24 and an outer surface 23 arranged opposite to each other in the front-rear direction y. The core board 200 is provided with fixing grooves on all four sides. The fixing grooves include a connecting surface 21 and a engaging surface 22. The connecting surface 21 is an inclined surface that slopes from the edge of the inner surface 24 of the core board 200 toward the interior of the core board 200. The engaging surface 22 is an inclined surface that slopes from the outer surface 23 of the core board 200 toward the interior of the core board 200. The angle between the connecting surface 21 and the engaging surface 22 is an obtuse angle.

[0052] In some alternative embodiments, the angle between the connecting surface 21 and the inner surface 24 is smaller than the angle between the engaging surface 22 and the outer surface 23.

[0053] It should be noted that the angle between the connecting surface 21 and the inner surface 24 is smaller than the angle between the engaging surface 22 and the outer surface 23. That is, the length and inclination of the connecting surface 21 are greater than the length and inclination of the engaging surface 22. After the frame 100 and the core panel 200 are connected, the pressure of the frame 100 on the core panel 200 is mainly directed from the outer surface 23 to the inner surface 24, which can increase the connection stability between the frame 100 and the new version. The embedded connection between the frame 100 and the core panel 200 can be embedded deeper into the core panel 200, while not affecting the subsequent connection of the door panel with any cabinet panel, thus improving the applicability of the door panel.

[0054] It should be noted that the core board 200 includes an inner surface 24 and an outer surface 23 arranged opposite each other in the front-back direction y. The core board 200 is provided with fixing grooves on all four sides to facilitate connection with the frame 100.

[0055] The frame 100 is bonded to the core board 200. The frame 100 includes side sealing blocks 1 symmetrically arranged in the left-right direction x and top sealing blocks 3 and bottom sealing blocks 4 symmetrically arranged in the up-down direction z. The side sealing blocks 1 and top sealing blocks 3 are connected by a 45° splicing method, and the side sealing blocks 1 and bottom sealing blocks 4 are connected by a 45° splicing method. The side sealing blocks 1 extend in the up-down direction z, and the top sealing blocks 3 and bottom sealing blocks 4 extend in the left-right direction x. In the front-back direction y, the thickness of the core board 200 is less than the thickness of the side sealing blocks 1, top sealing blocks 3, or bottom sealing blocks 4.

[0056] It should be noted that side edge sealing block 1 and top edge sealing block 3 are connected by a 45° splicing method, as are side edge sealing block 1 and bottom edge sealing block 4. This 45° beveled splicing transforms the vertical force into a diagonal component, dispersing stress through a triangular stabilizing structure. Compared to right-angle splicing, this design reduces the risk of cracking at the joints due to long-term use or environmental changes (such as humidity and temperature fluctuations). Actual test data shows that after 5000 opening and closing tests, the width change of the 45° spliced ​​door panel joint is reduced by 40% compared to right-angle splicing; the beveled surface increases the adhesive contact area (approximately 30% higher than right-angle splicing), and when used with PUR hot melt adhesive or epoxy resin adhesive, a stronger adhesive layer can be formed. In humid environments, the water absorption and expansion rate at the seam of a 45° splice is 25% lower than that of a right-angle splice, effectively preventing edge banding from falling off. The 45° bevel cut can be processed with high precision (tolerance ±0.1mm) using CNC cutting machines, five-axis machining centers, etc., seamlessly integrating with existing edge banding machines, drilling machines, and other equipment. This reduces equipment investment costs; the bevel cut also reduces waste of scrap materials. Taking a standard door panel as an example, the utilization rate of the material with a 45° splice is 8%-12% higher than that with a right-angle splice; the 45° bevel cut seam forms a continuous V-shaped groove, perfectly matching the three-dimensional grid frame design of the skeleton-line door panel, enhancing the overall sense of layering. Right-angle splices easily create visual breaks, disrupting design uniformity.

[0057] The side edge sealing block 1, top edge sealing block 3 and bottom edge sealing block 4 of the frame 100 have the same structure, which reduces processing costs and assembly difficulty; the side edge sealing block 1, top edge sealing block 3 and bottom edge sealing block 4 are all cubes, which have stronger wrapping properties and are not easy to fall off compared with the use of patch edge sealing strips on the edge of the door panel in the existing technology.

[0058] The side sealing block 1 is formed by a fixed surface, a cover surface 13, a shaped surface 14, an outer panel surface 15, a rounded corner surface 16, and a back surface 17. The side of the side sealing block 1 that is in contact with the core board 200 has a fixed surface, which is embedded into the fixing groove of the core board 200. The fixed surface includes a bonding surface 11, an anti-detachment surface 12, and a cover surface 13. The bonding surface 11 is an inclined surface that slopes inward from the edge of the frame 100 near the inner surface 24 towards the inside of the frame 100. The extending direction of the bonding surface 11... The angle between the left and right direction x is an acute angle; the anti-detachment surface 12 is an inclined surface that slopes from the side of the frame 100 near the outer surface 23 of the core board 200 towards the inner surface 24 of the frame 100 near the core board 200, and the angle between the bonding surface 11 and the anti-detachment surface 12 is an obtuse angle; the cover surface 13 along the front and rear direction y is connected to the side of the anti-detachment surface 12 away from the bonding surface 11, and the cover surface 13 is a plane that is bonded to the outer surface 23 of the core board 200; the angle between the cover surface 13 and the anti-detachment surface 12 is an acute angle.

[0059] It should be noted that the cover plate 13 is a flat surface that fits against the outer surface 23 of the core plate 200. This helps to cover the adhesive marks between the fixing surface and the fixing groove, i.e., the mating surface 11 and the connecting surface 21, and the anti-detachment surface 12 and the snap-fit ​​surface 22. The bonding between the cover plate 13 and the new outer surface 23 prevents the connection between the frame 100 and the core plate 200 from being squeezed and deformed due to moisture in a humid environment during the subsequent use of the door panel. This can further improve the stability of the connection between the frame 100 and the core plate 200, and at the same time prevent deformation.

[0060] In some optional embodiments, the angle between the extension direction of the mating surface 11 and the left-right direction x is 50°-65°.

[0061] Optionally, the angle between the extension direction of the bonding surface 11 and the front-rear direction y is 50°, 51°, 52°, 53°, 54°, 55°, 56°, 57°, 58°, 59°, 60°, 61°, 62°, 63°, 64°, and 65°. When the angle between the extension direction of the bonding surface 11 and the front-rear direction y is less than 50°, the inclination of the bonding surface 11 is smaller, meaning that less of the frame 100 is embedded in the core board 200, which may affect the stability of the connection between the frame 100 and the core board 200. When the angle with y is greater than 65°, the inclination of the bonding surface 11 is large or the length of the inclined surface of the bonding surface 11 is long, which reduces the contact area between the anti-detachment surface 12 and the core board 200 and reduces the stability of the connection between the frame 100 and the core board 200. The angle between the extension direction of the bonding surface 11 and the left-right direction x is 50°-65°. The inclination of the bonding surface 11 and the length of the inclined surface of the bonding surface 11 are more appropriate. The connection between the bonding surface 11 and the anti-detachment surface 12 is close to the midpoint of the core board 200 along the front-back direction y, which improves the stability of the connection between the frame 100 and the core board 200.

[0062] In some optional embodiments, the included angle between the bonding surface 11 and the anti-detachment surface 12 is 91°-105°.

[0063] Optionally, the included angle between the bonding surface 11 and the anti-detachment surface 12 is 91°, 92°, 94°, 95°, 97°, 100°, 101°, 103°, and 105°. When the included angle between the bonding surface 11 and the anti-detachment surface 12 is less than 90°, the distance along the front-rear direction y between the portion of the anti-detachment surface 12 and the bonding surface 11 located inside the core board 200 is smaller, that is, the portion of the frame 100 embedded in the core board 200 is sharper. When subjected to compression, the included angle between the bonding surface 11 and the anti-detachment surface 12 is more likely to penetrate deep into the core board 200. This can cause door panel deformation. When the angle between the bonding surface 11 and the anti-detachment surface 12 is greater than 105°, the width of the part of the frame 100 embedded in the core plate 200 in the front-to-back direction y is too wide, and the thickness of the core plate 200 at the connection between the core plate 200 and the frame 100 is too thin, which can also easily cause deformation. When the angle between the bonding surface 11 and the anti-detachment surface 12 is 91°-105°, the size of the part of the frame 100 embedded in the core plate 200 is appropriate, and the thickness of the core plate 200 is appropriate, making it less prone to deformation and helping to extend the service life of the door panel.

[0064] In some alternative embodiments, the angle between the cover surface 13 and the anti-detachment surface 12 is 10°-40°.

[0065] Optionally, the included angle between the cover surface 13 and the anti-detachment surface 12 is 10°, 13°, 15°, 20°, 22°, 23°, 25°, 28°, 39°, 32°, 34°, 35°, 36°, 37°, 39°, and 40°. When the included angle between the cover surface 13 and the anti-detachment surface 12 is less than 10°, the core plate 200 located between the cover surface 13 and the anti-detachment surface 12 along the front-rear direction y is relatively thin, which easily leads to measurement errors during processing and increases the risk of defects. The increased processing difficulty may cause the frame 100 and the core board 200 to not fit properly during installation, making them prone to deformation. When the angle between the cover plate surface 13 and the anti-detachment surface 12 is greater than 40°, the core board 200 located between the cover plate surface 13 and the anti-detachment surface 12 in the front-back direction y is thicker, making it easy for the frame 100 and the core board 200 to detach when connected. When the angle between the cover plate surface 13 and the anti-detachment surface 12 is 10°-40°, the connection between the frame 100 and the core board 200 is stable.

[0066] The cover plate surface 13 has a shaped surface 14 on the side away from the anti-detachment surface 12. The shaped surface 14 is an inclined surface that slopes from the side of the side sealing block 1 away from the outer surface 23 toward the protruding surface. The angle between the shaped surface 14 and the cover plate surface 13 is an acute angle. The shaped surface 14 has an outer plate surface 15 on the side away from the cover plate surface 13. Along the front-back direction y, the outer plate surface 15 is parallel to the cover plate surface 13. The angle between the outer plate surface 15 and the shaped surface 14 and the shaped surface 14 and the cover plate surface 13 are complementary angles. The outer plate surface 15 has a back surface 17 on the side away from the shaped surface 14. The back surface 17 is a rectangular plane that extends along the vertical direction z. A rounded corner surface 16 is provided between the outer plate surface 15 and the back surface 17.

[0067] It should be noted that the rounded corner 16 is formed by rounding the corners at the connection between the outer panel 15 and the back panel 17. This rounding process disperses impact force, transforming sharp edges into smooth arc surfaces, significantly reducing the probability of accidental injury. The rounded corner design of the skeleton-line door panel increases the contact area for the hand, reducing localized pressure concentration. Actual measurements show that the pressure distribution at the hand application point of a rounded corner handle is more than 30% more uniform than that of a right-angle handle, reducing fatigue over long-term use. The rounded corners eliminate dead angles, preventing dust and stains from accumulating. The rounded corner design reduces friction and scratches between the door panel edges and clothing or furniture, extending the lifespan of the door panel and surrounding items. The rounded corner treatment requires fine grinding or chamfering of the edges, a process that eliminates internal material stress and reduces the risk of cracking.

[0068] It is understood that the novel skeleton door panel provided in this application includes: a core panel 200 and a frame 100 disposed around the core panel 200; the core panel 200 is provided with fixing grooves around its perimeter, the fixing grooves connecting the frame 100 and the core panel 200, the fixing grooves including connecting and engaging surfaces 22, the included angle of the connecting and engaging surfaces 22 being an obtuse angle; the frame 100 is bonded to the core panel 200, facilitating replacement of the frame 100 when damaged, effectively saving costs; the frame 100 includes side sealing blocks 1 symmetrically arranged along the left-right direction x and top sealing blocks 3 and bottom sealing blocks 4 symmetrically arranged along the up-down direction z, the side sealing blocks 1 and top sealing blocks 3 are connected by a 45° splicing method, the side sealing blocks 1 and bottom sealing blocks 4 The side sealing block 1 is connected by a 45° splicing method; the side sealing block 1 extends along the vertical direction z, and the top sealing block 3 and bottom sealing block 4 extend along the horizontal direction x; along the front-back direction y, the thickness of the core board 200 is less than the thickness of the side sealing block 1, the top sealing block 3, or the bottom sealing block 4, which is conducive to forming a skeleton line and increasing aesthetics; the side sealing block 1, the top sealing block 3, and the bottom sealing block 4 of the frame 100 have the same structure; the side sealing block 1, the top sealing block 3, and the bottom sealing block 4 are all cubes; the side sealing block 1 is formed by a fixed surface, a cover surface 13, a shaping surface 14, an outer panel surface 15, a rounded corner surface 16, and a back surface 17. The side of the side sealing block 1 that is in contact with the core board 200 has a fixed surface, and the fixed surface and the core board 200 are connected by a fixed surface. The fixing groove of the core board 200 is embedded; the fixing surface includes a mating surface 11, an anti-detachment surface 12, and a cover surface 13. The mating surface 11 is mated to the connecting surface 21, the anti-detachment surface 12 is mated to the engaging surface 22, and the cover surface 13 is mated to the outer surface 23. The angle between the extending direction of the mating surface 11 and the front-rear direction y is an acute angle; the angle between the mating surface 11 and the anti-detachment surface 12 is an obtuse angle. The cover surface 13 is connected to the side of the anti-detachment surface 12 away from the mating surface 11 along the front-rear direction y. The cover surface 13 is a plane that is mated to the outer surface 23 of the core board 200. Under the premise that the mating surface 11 is mated to the connecting surface 21, and the engaging surface 22 is mated to the anti-detachment surface 12 and bonded, the outer surface 23 of the core board 200 is partially mated. The cover plate surface 13 of the frame 100 helps to improve the stability of the connection between the frame 100 and the core board 200, and will not expose the traces of the connection between the edge of the core board 200 and the frame 100; the angle between the cover plate surface 13 and the anti-detachment surface 12 is an acute angle; a shaped surface 14 is provided on the side of the cover plate surface 13 away from the anti-detachment surface 12, and the angle between the shaped surface 14 and the cover plate surface 13 is an acute angle; an outer plate surface 15 is provided on the side of the shaped surface 14 away from the cover plate surface 13. Along the front-back direction y, the outer plate surface 15 is parallel to the cover plate surface 13. The outer plate surface 15 and the shaped surface 14 are connected to form a skeleton line, which increases the aesthetics of the door panel. At the same time, the bevel of the shaped surface 14 makes it easy to open the door panel after the door panel is put into use, which can be used as a door panel handle, improving practicality.The outer panel 15 has a back surface 17 on the side away from the styling surface 14. The back surface 17 is a rectangular plane extending in the vertical direction z. A rounded corner surface 16 is provided between the outer panel 15 and the back surface 17 to avoid the right angle formed by the direct connection between the back surface 17 and the outer panel 15, which could cause user injury or deformation of the door panel during use. After the frame 100 and the core board 200 of the novel skeleton-line door panel of this application are connected, the splicing mark will not be exposed, effectively avoiding the splicing mark caused by different water absorption and expansion during the use of the door panel, as well as the problem of edge peeling and cracking, effectively extending the service life of the skeleton-line door panel and improving its practicality.

[0069] As can be seen from the above embodiments, the novel skeletal door panel provided by this utility model achieves at least the following beneficial effects:

[0070] This application provides a novel skeleton door panel, comprising: a core panel and a frame disposed around the core panel; each of the four sides of the core panel is provided with a fixing groove, the fixing groove connecting the frame and the core panel, the fixing groove including a connecting and engaging surface, the included angle of the connecting and engaging surface being an obtuse angle; the frame is bonded to the core panel, facilitating replacement of the frame when damaged, effectively saving costs; the frame includes side sealing blocks symmetrically arranged in the left-right direction and top and bottom sealing blocks symmetrically arranged in the up-down direction, the side sealing blocks and top sealing blocks being connected by a 45° splicing method, the side sealing blocks extending in the up-down direction, and the top and bottom sealing blocks extending in the left-right direction; along the front-back direction, the core panel... The thickness of the board is less than that of the side, top, or bottom edge banding blocks, which helps to form a skeletal line and increases aesthetics; the side, top, and bottom edge banding blocks of the frame have identical structures; all three are cubic; the side edge banding blocks are formed by a fixed surface, a cover surface, a shaped surface, an outer panel surface, rounded corners, and a back surface; the side of the side edge banding block that is attached to the core board has a fixed surface, which is embedded in the fixing groove of the core board; the fixed surface includes a bonding surface, an anti-detachment surface, and a cover surface; the bonding surface is attached to the connecting surface, the anti-detachment surface is attached to the locking surface, and the cover surface is attached to the outer surface; the angle between the extension direction of the bonding surface and the front-back direction is an acute angle; the bonding surface and the anti-detachment surface... The included angle between the surfaces is an obtuse angle; the cover plate surface connects to the anti-detachment surface on the side away from the bonding surface along the front-to-back direction. The cover plate surface is a plane that adheres to the outer surface of the core board. Under the premise that the bonding surface and the connecting surface are adhered, and the snap-fit ​​surface and the anti-detachment surface are adhered and bonded, the outer surface of the core board is partially attached to the cover plate surface of the frame, which helps to improve the stability of the connection between the frame and the core board and will not expose the traces of the connection between the core board edge and the frame; the included angle between the cover plate surface and the anti-detachment surface is an acute angle; the side of the cover plate surface away from the anti-detachment surface is provided with a shaping surface, and the included angle between the shaping surface and the cover plate surface is an acute angle; the side of the shaping surface away from the cover plate surface is provided with an outer plate surface. Along the front-to-back direction, the outer plate surface is parallel to the cover plate surface, and the connection between the outer plate surface and the shaping surface forms a skeleton line, increasing... While enhancing the aesthetics of the door panel, the beveled surface of the design allows the door panel to be pulled open and used as a handle after it is put into use, improving practicality. The outer panel has a back surface on the side away from the design surface. The back surface is a rectangular plane extending vertically. The rounded corners between the outer panel and the back surface prevent right angles formed by the direct connection between the back and the outer panel, which could cause user injury or door panel deformation during use. After the frame and core panel of the new skeleton-line door panel of this application are connected, the splicing marks will not be exposed, effectively avoiding the splicing marks caused by different water absorption and expansion during the use of the door panel, as well as the problem of edge peeling and cracking. This effectively extends the service life of the skeleton-line door panel and improves practicality.

[0071] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A novel skeleton-shaped door panel, characterized in that, include: Core board and the frame surrounding the core board; The core board includes an inner surface and an outer surface arranged opposite each other in the front-back direction. The core board is provided with fixing grooves on all four sides. The fixing grooves include a connecting surface and a locking surface. The connecting surface is an inclined surface that slopes from the edge of the outer surface of the core board toward the interior of the core board. The locking surface is an inclined surface that slopes from the inner surface of the core board toward the interior of the core board. The angle between the connecting surface and the locking surface is an obtuse angle. The frame is bonded to the core board. The frame includes side sealing blocks symmetrically arranged in the left-right direction and top and bottom sealing blocks symmetrically arranged in the up-down direction. The side sealing blocks and the top sealing blocks are connected by a 45° splicing method, and the side sealing blocks and the bottom sealing blocks are connected by a 45° splicing method. The contact points of the side sealing blocks and the top sealing blocks form a 45° angle with the left-right direction and the up-down direction, and the contact points of the side sealing blocks and the bottom sealing blocks form a 45° angle with the left-right direction and the up-down direction. The side sealing blocks extend in the up-down direction, and the top and bottom sealing blocks extend in the left-right direction. In the front-back direction, the thickness of the core board is less than the thickness of the side sealing blocks, the top sealing blocks, or the bottom sealing blocks. The side sealing blocks, top sealing blocks, and bottom sealing blocks of the frame have identical structures. Each is a pentagonal prism formed by a fixed surface, a cover surface, a shaped surface, an outer panel surface, a rounded corner surface, and a back surface. A fixed surface is provided on the side of the prism that is in contact with the core board, and this fixed surface is embedded into the fixing groove of the core board. The fixed surface includes a bonding surface, an anti-detachment surface, and a cover surface. The bonding surface is in contact with the connecting surface, the anti-detachment surface is in contact with the engaging surface, and the cover surface is in contact with the outer surface. The bonding surface is an inclined surface that slopes inward from the edge of the frame near the inner surface towards the inside of the frame, and the angle between the extending direction of the bonding surface and the left-right direction is an acute angle. The anti-detachment surface is an inclined surface that slopes inward from the outer surface of the frame near the core board towards the inner surface of the frame near the core board. The clamping surface between the bonding surface and the anti-detachment surface... The angle is obtuse; along the front-back direction, the cover plate surface is connected to the side of the anti-detachment surface away from the bonding surface, the cover plate surface is a plane that is in contact with the outer surface of the core plate, and the angle between the cover plate surface and the anti-detachment surface is acute; the side of the cover plate surface away from the anti-detachment surface is provided with the shaping surface, the shaping surface is an inclined surface that slopes from the side of the side sealing block away from the outer surface towards the protruding surface, and the angle between the shaping surface and the cover plate surface is acute; the side of the shaping surface away from the cover plate surface is provided with the outer plate surface, along the front-back direction, the outer plate surface is parallel to the cover plate surface, and the angle between the outer plate surface and the shaping surface and the angle between the shaping surface and the cover plate surface are complementary angles; the side of the outer plate surface away from the shaping surface is provided with the back surface, the back surface is a rectangular plane extending along the up-down direction, and a rounded corner surface is provided between the outer plate surface and the back surface, the rounded corner surface being an arc-shaped surface.

2. The novel skeleton door panel according to claim 1, characterized in that, The angle between the extension direction of the bonding surface and the left-right direction is 50°-65°.

3. The novel skeleton door panel according to claim 1, characterized in that, The angle between the bonding surface and the anti-detachment surface is 91°-105°.

4. The novel skeleton door panel according to claim 1, characterized in that, The angle between the cover plate surface and the anti-detachment surface is 10°-40°.

5. The novel skeleton door panel according to claim 1, characterized in that, The angle between the shaped surface and the cover plate surface is 35°-55°.

6. The novel skeleton door panel according to claim 1, characterized in that, The angle between the outer panel and the shaped surface is 125°-145°.

7. The novel skeleton door panel according to claim 1, characterized in that, The angle between the connecting surface and the outer surface is smaller than the angle between the engaging surface and the inner surface.

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