Fabricated external corner wood-plastic line
By designing an L-shaped cross-section and adjustable support components for prefabricated corner wood-plastic moldings, the problem of corner strips sinking inward after being pressed is solved, achieving stable fixation and aesthetic effect at corners of different angles.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 浙江中财管道科技股份有限公司
- Filing Date
- 2025-05-14
- Publication Date
- 2026-04-28
AI Technical Summary
Existing corner strips tend to dent when pressed, especially when dealing with chamfered corners, lacking support, affecting aesthetics and causing instability.
Design a prefabricated corner wood-plastic molding with an L-shaped cross-section structure. The inner side is equipped with a boss and a support. The support is adjustable in length and is fixed to the corner with hardware to provide inner support and prevent the molding from deforming.
It effectively prevents the corner trim from sinking inwards after being pressed on chamfered and right-angled corners, improving stability and aesthetics, and adapting to the needs of corners at different angles.
Smart Images

Figure CN224173630U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wood-plastic molding technology, and in particular to an assembled external corner wood-plastic molding. Background Technology
[0002] Traditionally, when creating curved corners on walls, the process often involves using on-site plywood to form the initial curve, followed by bending the wall panel or applying paint, wallpaper, or wall coverings. This method is not only labor-intensive and time-consuming, but also contradicts the growing trend towards convenient prefabricated construction.
[0003] As shown in the design patent application number CN202330527276.5, existing corner strips, when applied to external corners, can make the external corners of walls curved, but they can generally only handle right-angled external corners. When handling chamfered external corners, there will be a large gap on the inside of the corner strip, lacking support. The corner strip is easy to deform and sink in after being pressed, which affects the appearance. Utility Model Content
[0004] To address the shortcomings of existing corner trims that tend to sink inwards after being pressed, this invention proposes an assembled wood-plastic corner trim that provides inner support and prevents it from sinking inwards after being pressed.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A prefabricated corner wood-plastic composite molding includes a wood-plastic composite molding body with an L-shaped cross-section. The outer corner of the wood-plastic composite molding body has a rounded corner, and the inner corner of the wood-plastic composite molding body has a boss. The inner side of the boss has a right-angled surface that can fit with a right-angled corner. The wood-plastic composite molding also includes a support and hardware. The support is used to support the chamfered corner and is detachably connected to the right-angled surface. The hardware is located on opposite sides of the wood-plastic composite molding body and is used to fix the wood-plastic composite molding body to the corner.
[0007] With the above setup, a support is provided on the inner side of the wood-plastic molding body. After it is installed on the chamfered external corner, it can support the wood-plastic molding body on the inside and prevent the wood-plastic molding body from deforming and sinking after being pressed. After the support is removed, the wood-plastic molding body can be installed on the right-angled external corner, and the boss will support the wood-plastic molding body and prevent the wood-plastic molding body from deforming and sinking after being pressed.
[0008] Furthermore, the support includes a stud, a sleeve, and a nut. One end of the stud is threadedly connected to the boss, the sleeve is threadedly connected to the other end of the stud, and the nut is threadedly connected to the stud and abuts against the side of the sleeve near the boss.
[0009] With the above settings, the length of the support can be adjusted, making it convenient to support chamfered external corners with different chamfer widths.
[0010] Furthermore, the support also includes a rubber pad installed on the side of the threaded sleeve away from the boss.
[0011] The above settings prevent the support components from damaging the external corners.
[0012] Furthermore, the wood-plastic molding body has slots on both the left and right sides. The hardware includes a connecting plate and screws. One side of the connecting plate can be inserted into the slot, and the other side of the connecting plate can be fixed to the external corner with screws.
[0013] Furthermore, the connecting plate has an H-shaped cross-section, including a base plate and a snap-fit plate fixedly connected to the outside of the base plate. The base plate can be fastened to the external corner with screws, the main edge of the wood-plastic molding is attached to the outside of the base plate, and the snap-fit plate is bent and snapped into the slot on the side away from the base plate.
[0014] Furthermore, a side groove is provided on the side of the card slot near the base plate, and a barb is provided on the side of the card plate away from the base plate, with the barb embedded in the side groove.
[0015] With the above-mentioned design, the snap-fit plate is equipped with an anti-pull-out design, further enhancing the stability of the wood-plastic composite molding.
[0016] Furthermore, a weight-reducing cavity is provided inside the main body of the wood-plastic molding.
[0017] The above settings reduce the weight of wood-plastic composite moldings.
[0018] Furthermore, a colored film is applied to the outer side of the wood-plastic composite molding to enhance its aesthetics. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of a wood-plastic composite molding installed on a chamfered external corner, as an example.
[0020] Figure 2 for Figure 1 Enlarged view of point A.
[0021] Figure 3 for Figure 1 Enlarged view of point B.
[0022] Figure 4 This is a schematic diagram of a wood-plastic composite molding installed on a right-angled external corner, as an example. Detailed Implementation
[0023] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.
[0024] like Figures 1 to 4A prefabricated corner wood-plastic molding includes a wood-plastic molding body 3 with an L-shaped cross-section. The outer corner of the wood-plastic molding body 3 has a rounded corner 4, and the inner corner of the wood-plastic molding body 3 has a boss 5. The inner side of the boss 5 has a right-angled surface 6 that can fit with the right-angled corner. The wood-plastic molding also includes a support 7 and hardware 8. The support 7 is used to support the chamfered corner and is detachably connected to the right-angled surface 6. The hardware 8 is located on opposite sides of the wood-plastic molding body 3 and is used to fix the wood-plastic molding body 3 to the corner.
[0025] With the above configuration, the wood-plastic molding body 3 has a support 7 on its inner side. After being installed on the chamfered external corner, the support 7 can support the wood-plastic molding body 3 on its inner side, preventing the wood-plastic molding body 3 from deforming and sinking after being pressed. After removing the support 7, the wood-plastic molding body 3 can be installed on the right-angled external corner, and the boss 5 supports the wood-plastic molding body 3, preventing the wood-plastic molding body 3 from deforming and sinking after being pressed.
[0026] Specifically, the main body 3 of the wood-plastic composite molding in this application is made of wood-plastic material and is extruded. The cross-section of the main body 3 is L-shaped and right-angled, so that it can be attached to the left and right sides of an external corner. Existing external corners are divided into right-angled external corners and chamfered external corners. Right-angled external corners are external corners with a right angle cross-section, and chamfered external corners are external corners with a chamfer. Specifically, the wood-plastic composite molding in this application is mainly suitable for external corners with a 45-degree chamfer. When used for chamfered external corners, such as Figure 1 The left side of the wood-plastic molding body 3 is fixed to the left side of the external corner by the left-side hardware 8, and the right side of the wood-plastic molding body 3 is fixed to the right side of the external corner by another hardware 8. The wood-plastic molding body 3 wraps around the external corner, giving it a rounded shape to prevent bumps and injuries. The end of the support member 7 abuts against the chamfer, and the support member 7 supports the wood-plastic molding body 3 on the inside. When the outside of the wood-plastic molding body 3 is pressed, it is not easy for the wood-plastic molding body 3 to deform and sink inward. When used for right-angle external corners, such as Figure 4 When the support 7 is removed and the wood-plastic molding body 3 is fixed to the external corner by the hardware 8, the vertex of the external corner is attached to the right angle surface 6 on the inner side of the boss 5. At this time, the boss 5 supports the inner side of the wood-plastic molding body 3.
[0027] In one implementation, the support member 7 includes a stud 71, a sleeve 72, and a nut 73. One end of the stud 71 is threaded to the boss 5, the sleeve 72 is threaded to the other end of the stud 71, and the nut 73 is threaded to the stud 71 and abuts against the side of the sleeve 72 near the boss 5.
[0028] With the above settings, the length of the support 7 can be adjusted to facilitate the support of chamfered external corners with different chamfer widths.
[0029] The stud 71 of this application is threadedly connected to the boss 5 to facilitate the installation and removal of the support column; the axis of the support 7 is located on the angle bisector of the wood-plastic molding body 3. The support 7 vertically supports the chamfer. In the chamfered external corner, the width of the chamfer is different and the distance from the chamfer to the boss 5 is not equal. Manually rotate the threaded sleeve 72. After the threaded sleeve 72 and the stud 71 rotate relative to each other, the stud 71 moves along the axis of the stud 71 to adjust the length of the support 7. Rotate the nut 73. The nut 73 presses against the end of the threaded sleeve 72 to prevent the threaded sleeve 72 from loosening. When the wood-plastic molding is installed on the chamfered external corner, the chamfer supports the inner side of the wood-plastic molding body 3 through the threaded sleeve 72 and the stud 71.
[0030] As one implementation, the support 7 also includes a rubber pad 74 installed on the side of the threaded sleeve 72 away from the boss 5.
[0031] The above settings prevent the support component 7 from damaging the external corner.
[0032] The rubber pad 74 in this application is made of rubber and has good elasticity. When the wood-plastic strip is installed on the chamfered external corner, the rubber pad 74 supports the chamfer and prevents the support 7 from damaging the chamfered external corner.
[0033] As one implementation method, the main body 3 of the wood-plastic molding is provided with slots 9 on the left and right sides. The hardware 8 includes a connecting plate 81 and screws 82. One side of the connecting plate 81 can be embedded in the slot 9, and the other side of the connecting plate 81 can be fixed to the external corner by screws 82.
[0034] The screw 82 in this application is a self-tapping screw. During installation, first insert one side of the connecting plate 81 into the slot 9. After the wood-plastic molding body 3 is fastened onto the external corner, the screw 82 passes through the connecting plate 81 and is tightened onto the external corner to fix the wood-plastic molding body 3 onto the external corner. The slot 9 on the left side of the wood-plastic molding body 3 is parallel to the left side of the external corner, and the slot 9 on the right side is parallel to the right side of the external corner. After the connecting plates 81 on both sides are inserted into the slots 9, the wood-plastic molding body 3 is fixed onto the external corner.
[0035] As one implementation method, the cross-section of the connecting plate 81 is h-shaped, including a base plate 811 and a snap-fit plate 812 fixedly connected to the outside of the base plate 811. The base plate 811 can be fastened to the external corner by screws 82. The edge of the wood-plastic strip body 3 is attached to the outside of the base plate 811. The snap-fit plate 812 is bent on the side away from the base plate 811 and snapped into the slot 9.
[0036] The connecting plate 81 of this application is integrally formed, the base plate 811 is a flat structure, the snap-fit plate 812 is bent into an L shape and set on the outside of the base plate 811, so that the cross-section of the connecting plate 81 is h-shaped, and the edge part of the wood-plastic strip body 3 is snapped between the base plate 811 and the snap-fit plate 812, thereby improving the stability of the wood-plastic strip body 3.
[0037] As one implementation, the card slot 9 is provided with a side groove 10 on the side near the base plate 811, and the snap plate 812 is provided with a barb 813 on the side away from the base plate 811, with the barb 813 embedded in the side groove 10.
[0038] With the above settings, the snap-fit plate 812 has an anti-pull-out design, which further enhances the stability of the wood-plastic composite molding body 3.
[0039] The snap-fit plate 812 of this application is made of metal and has a certain degree of elasticity. When the snap-fit plate 812 is inserted into the snap-fit groove 9, the barb 813 deforms. When the barb 813 moves to the side groove 10, the barb 813 automatically springs back and embeds into the side groove 10. The barb 813 abuts against the groove wall of the side groove 10 near the groove opening of the snap-fit groove 9 to prevent the connecting plate 81 from being pulled out.
[0040] As one way to achieve this, a weight-reducing cavity 11 is provided inside the main body 3 of the wood-plastic molding.
[0041] The above settings reduce the weight of wood-plastic composite moldings.
[0042] As one way to achieve this, a colored film is applied to the outside of the main body 3 of the wood-plastic molding to enhance its aesthetics.
[0043] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.
Claims
1. A prefabricated corner wood-plastic molding, characterized in that, The product includes a wood-plastic composite molding body with an L-shaped cross-section. The outer corner of the wood-plastic composite molding body has rounded corners, and the inner corner of the wood-plastic composite molding body has a boss. The inner side of the boss has a right-angled surface that can fit with a right-angled external corner. The wood-plastic composite molding body also includes a support member and hardware. The support member is used to support the chamfered external corner and can be detachably connected to the right-angled surface. The hardware is located on opposite sides of the wood-plastic composite molding body and is used to fix the wood-plastic composite molding body to the external corner.
2. The prefabricated corner wood-plastic molding according to claim 1, characterized in that, The support includes a stud, a sleeve, and a nut. One end of the stud is threaded to the boss, the sleeve is threaded to the other end of the stud, and the nut is threaded to the stud and abuts against the side of the sleeve near the boss.
3. The prefabricated corner wood-plastic molding according to claim 2, characterized in that, The support also includes a rubber pad installed on the side of the threaded sleeve away from the boss.
4. The prefabricated corner wood-plastic molding according to claim 1, characterized in that, The wood-plastic molding body has slots on both the left and right sides. The hardware includes a connecting plate and screws. One side of the connecting plate can be inserted into the slot, and the other side of the connecting plate can be fixed to the external corner with screws.
5. A prefabricated corner wood-plastic molding according to claim 4, characterized in that, The connecting plate has an H-shaped cross-section and includes a base plate and a snap-fit plate fixedly connected to the outside of the base plate. The base plate can be fastened to the external corner with screws. The main edge of the wood-plastic molding is attached to the outside of the base plate. The snap-fit plate is bent and snapped into the slot on the side away from the base plate.
6. The prefabricated corner wood-plastic molding according to claim 5, characterized in that, The card slot has a side groove on the side near the base plate, and the snap plate has barbs on the side away from the base plate, with the barbs embedded in the side groove.
7. A prefabricated corner wood-plastic molding according to claim 1, characterized in that, The wood-plastic molding body has a weight-reducing cavity inside.
Citation Information
Patent Citations
Arc angle strip (C-40C wood plastic assembly)
CN308430462S