Composite door leaf convenient to assemble
Patent Information
- Application Number
- CN202522617026.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-10
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-10
AI Technical Summary
The joints of existing door panels are weak, and the hinges are difficult to install, resulting in a short service life and inconvenient installation.
The horizontal and vertical stiles are connected by pin blocks and pin holes, and fixed with bolts, simplifying the splicing operation; detachable hinge pads and auxiliary lifting parts are used to help lift the door leaf to facilitate hinge installation.
It improves the splicing strength and installation efficiency of door panels, reduces the labor intensity of operators, and extends the service life of door panels.
Smart Images

Figure CN224931564U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of composite door technology, and more specifically, to a composite door that is easy to assemble. Background Technology
[0002] The door leaf is the movable core component of a door, usually made of wood, metal, plastic, or other composite materials. It is connected to the door frame by hinges and can rotate around the door frame to open and close. It is the most obvious functional component of the door and also plays a core role in sound insulation, heat insulation, security, and decoration.
[0003] Currently, door panels generally consist of a stile, a core material filled within the stile, and a panel covering the outside of the stile. Existing stiles are typically rectangular. During assembly, pneumatic riveting machines are usually used to drive pneumatic nails into the joints of the horizontal and vertical edges of the stile to form the stile. However, this assembly method often results in weak connections at the joints of the horizontal and vertical edges, affecting the lifespan of the door panel. Furthermore, when installing existing door panels onto the door frame using hinges, an operator must lift the door panel to ensure a gap between its bottom wall and the ground so that another operator can install the hinges. However, this process requires the operator to keep the door panel lifted, making installation quite laborious. Utility Model Content
[0004] The purpose of this application is to provide a composite door leaf that is easy to assemble, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this application provides the following technical solution:
[0006] A composite door leaf that is easy to assemble includes a door stile and a core material. The core material includes a core panel embedded in the door stile. The core panel has door panels on both sides that are flush with the corresponding sides of the door stile. The two sides of the door stile are covered with decorative panels.
[0007] The door stile consists of horizontal and vertical stiles that are spliced together in sequence. The horizontal stiles have pins at both ends, and the vertical stiles have corresponding pins at both ends for the corresponding pins to extend into pin holes. The vertical stiles also have bolts that pass through the corresponding pins at both ends.
[0008] Multiple removable hinge pads are installed on the vertical stile on one side, and a retractable auxiliary lifting component is installed on the bottom hinge pad. The auxiliary lifting component is used to assist in lifting the composite door leaf.
[0009] Furthermore, the inner wall of the door stile protrudes outward to form a mounting platform. The door panel is installed on the corresponding side of the mounting platform by countersunk bolts, so as to press the core panel into the inner side of the mounting platform.
[0010] Furthermore, stepped grooves are provided on the side walls of the mullions, and hinge pads are installed in the stepped grooves by countersunk bolts.
[0011] Furthermore, a through groove is provided inside the hinge pad, and limiting grooves are provided on both sides of the through groove along its extension direction;
[0012] The auxiliary lifting component includes a sliding plate that can be pulled out and installed in the through groove. The end of the sliding plate located in the through groove is provided with a limiting block that slides in the corresponding limiting groove. The extended end of the sliding plate is provided with a detachable overlapping column.
[0013] Furthermore, a locking groove is provided on the outer side of the hinge pad block, located above the through groove. A lifting locking plate is provided in the locking groove, and a locking block that can extend into the through groove is provided on the locking plate. A locking hole is provided on the extended end of the sliding plate. When the sliding plate retracts into the through groove, the locking block extends into the locking hole to lock the sliding plate.
[0014] Furthermore, the extended end of the sliding plate is provided with a threaded hole, and the lap post is provided with a threaded post that is threaded into the threaded hole.
[0015] Furthermore, the outer surface of the hinge pad is provided with a groove for the retraction of the overlapping post. Compared with the prior art, the beneficial effects of this application are:
[0016] 1. This application, by inserting pins into corresponding pin holes, forms a mortise and tenon joint between the opposing ends of the horizontal and vertical mullions. Compared to the existing method of connecting horizontal and vertical mullions with pneumatic nails, this application uses pins and pin holes for connection, eliminating the need for a pneumatic riveting machine to assemble the door mullions, making the assembly operation simple and convenient. At the same time, by inserting bolts through the pins into the corresponding pin holes, the joint ends of the horizontal and vertical mullions are further secured by bolts on top of the mortise and tenon joint, making the door mullion formed by sequentially assembling the horizontal and vertical mullions more robust and extending its service life.
[0017] 2. In this application, by setting hinge pads and auxiliary lifting components, the auxiliary lifting components can assist in lifting the composite door leaf when it is installed on the door frame, thereby reducing the force required for the operator to keep the composite door leaf lifted, so as to achieve the purpose of saving effort. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the composite door leaf in this application.
[0019] Figure 2 This is an exploded structural diagram of the composite door leaf in this application.
[0020] Figure 3 This is an exploded structural diagram of the mullion with hinge pads installed in this application.
[0021] Figure 4 This is a schematic diagram of the structure when the sliding plate extends out of the hinge pad in this application.
[0022] Figure 5 This is a cross-sectional view of the sliding plate extending from the hinge pad in this application.
[0023] Figure 6 This is a half-sectional structural diagram of the hinge pad in this application.
[0024] Figure 7 This is a structural diagram of the sliding plate and the overlapping columns in this application.
[0025] Figure 8 This is a structural schematic diagram of the door frame in this application.
[0026] The meanings of the labels in the diagram are as follows:
[0027] 100. Door stile; 110. Decorative panel; 120. Hinge pad; 201. Mounting platform; 210. Core board; 220. Door panel; 230. Horizontal stile; 231. Pin block; 240. Vertical stile; 241. Pin hole; 301. Step groove; 401. Locking groove; 402. Groove; 410. Sliding plate; 420. Overlap post; 430. Locking plate; 431. Locking block; 501. Through groove; 601. Limiting groove; 711. Limiting block; 712. Locking hole; 713. Threaded hole; 721. Threaded post; 800. Door frame; 810. Auxiliary bracket. Detailed Implementation
[0028] To further understand the content of this application, a detailed description of this application will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative and not intended to limit the scope of this application.
[0029] The following is in conjunction with the appendix Figures 1-8 This embodiment will be described in further detail.
[0030] like Figures 1-3 As shown, a composite door leaf that is easy to assemble in this embodiment includes a door stile 100 and a core material filled in the door stile 100. The core material includes a core board 210 embedded in the door stile 100. The core board 210 has door panels 220 on both sides that are flush with the corresponding sides of the door stile 100. The two sides of the door stile 100 are covered with decorative panels 110.
[0031] In this embodiment, the core board 210 is made of graphite homogeneous board, which has good thermal insulation and sound insulation properties, so that the composite door leaf made from it has better thermal insulation and sound insulation performance.
[0032] The door stile 100 is rectangular and made of solid wood. The core board 210 is embedded in the door stile 100. The door panel 220 is compositely set on both sides of the core board 210, so that the two outer sides of the core material formed by the two composites can be flush with the two sides of the door stile 100, so as to facilitate the bonding and covering of the decorative panel 110 on the outer side of the door stile 100 and the door panel 220.
[0033] Specifically, the door panel 220 is made of wood, and the decorative panel 110 is made of MDF with wood veneer. This allows for better decoration such as carving and painting on the decorative panel 110, making it more aesthetically pleasing. In actual use, the decorative panel 110 is bonded to the outer surfaces of the door stile 100 and the door panel 220 using environmentally friendly adhesive. The dimensions of the decorative panel 110 are adapted to the dimensions of the door stile 100.
[0034] In this embodiment, combined with Figure 2 and Figure 3 As shown, the door stile 100 includes a horizontal stile 230 and a vertical stile 240 that are spliced together in sequence. The horizontal stile 230 has pins 231 at both ends, and the vertical stile 240 has pin holes 241 at both ends for the corresponding pins 231 to extend into. The vertical stile 240 also has bolts that pass through the corresponding pins 231 at both ends.
[0035] Specifically, two horizontal stiles 230 are arranged opposite each other on the upper and lower sides of the door stile 100, and two vertical stiles 240 are arranged opposite each other on the left and right sides of the door stile 100. Pin blocks 231 and pin holes 241 are respectively located at the joint ends of the horizontal stiles 230 and vertical stiles 240. During actual assembly, the pin blocks 231 are inserted into the corresponding pin holes 241, forming a tenon and mortise joint between the joint ends of the horizontal stiles 230 and vertical stiles 240. This allows for a better assembly of the horizontal stiles 230 and vertical stiles 240 into a rectangular door stile 100. Compared to the existing method of connecting the horizontal stiles 230 and vertical stiles 240 with pneumatic nails, this embodiment uses pin blocks 231 and pin holes 241 for connection, eliminating the need for a pneumatic riveting machine and making the assembly operation simple and convenient.
[0036] In this process, the pin block 231 is inserted through the bolt into the corresponding pin hole 241, thereby further fixing the splicing ends of the horizontal stile 230 and the vertical stile 240 with bolts on the basis of mortise and tenon fixing, thus making the door stile 100 formed by the sequential splicing of the horizontal stile 230 and the vertical stile 240 more solid.
[0037] Specifically, in order to assemble the core panel 210 and the door panel 220 within the door stile 100, in this embodiment, the inner sidewall of the door stile 100 protrudes outward to form a mounting platform 201. That is, the inner sidewalls of both the horizontal stile 230 and the vertical stile 240 protrude outward to form the mounting platform 201. The mounting platform 201 is located at the center of the inner sidewalls of the horizontal stile 230 and the vertical stile 240, and the opposite ends of the mounting platform 201 are inclined. This ensures that the ends of the mounting platform 201 do not interfere with the horizontal stile 230 and the vertical stile 240. The door panel 220 is installed on the corresponding side of the mounting platform 201 by countersunk bolts, so that the core panel 210 is pressed into the inner side of the mounting platform 201. The thickness of the core panel 210 is adapted to the thickness of the mounting platform 201. When the door panel 220 is fixedly installed on the corresponding side of the mounting platform 201 by countersunk bolts, the door panel 220 can be fixedly connected to the door stile 100. At the same time, the core panel 210 is pressed between the two door panels 220 to realize the embedded installation of the core panel 210 in the door stile 100.
[0038] In this embodiment, a plurality of detachable hinge pads 120 are arranged on the vertical mullion 240 on one side, and a retractable auxiliary lifting component is provided on the hinge pad 120 at the bottom. The auxiliary lifting component is used to assist in lifting the composite door leaf.
[0039] In this embodiment, by setting the hinge pad 120, when the composite door leaf is installed in the door frame 800 by the hinge, one side of the hinge can be installed and connected to the hinge pad 120 so that the hinge can be installed on the composite door leaf.
[0040] Combination Figure 8 As shown, in actual use, when the composite door leaf is installed in the door frame 800 by the hinge, it is necessary to lift the composite door leaf to ensure that there is a gap between the bottom wall of the composite door leaf installed on the door frame 800 and the ground. In the prior art, the operator needs to manually lift the composite door leaf. Since the composite door leaf has a certain weight, it is quite difficult for the operator to keep the composite door leaf lifted.
[0041] In this embodiment, by setting up an auxiliary lifting component, it is possible to assist in lifting the composite door leaf, thereby reducing the force required for the operator to keep the composite door leaf raised, so as to achieve the purpose of saving effort.
[0042] In this embodiment, in order to facilitate the assembly and disassembly of the hinge pad 120, a stepped groove 301 is provided on the side wall of the mullion 240, and the hinge pad 120 is installed in the stepped groove 301 by countersunk bolts; specifically, when the hinge pad 120 is installed in the stepped groove 301, its outer side protrudes from the side wall of the mullion 240, so that the hinge can be installed on the outer side of the hinge pad 120.
[0043] Combination Figures 4-7 As shown, in this embodiment, a through groove 501 is provided in the hinge pad 120. The through groove 501 passes through the hinge pad 120 in the horizontal direction. Limiting grooves 601 are provided on both sides of the through groove 501 along its extension direction. The opening of the limiting groove 601 faces the side of the through groove 501 located in the stepped groove 301.
[0044] The auxiliary lifting component includes a sliding plate 410 that can be pulled out and disposed within the through groove 501. The end of the sliding plate 410 located within the through groove 501 is provided with a limiting block 711 that slides within a corresponding limiting groove 601. A detachable overlapping post 420 is provided on the protruding end of the sliding plate 410. Thus, by allowing the limiting block 711 to slide into the opening of the corresponding limiting groove 601, the sliding plate 410 can slide into the through groove 501, thereby achieving the sliding plate 410's position within the through groove 501. In the sliding installation, the hinge pad 120 is installed in the stepped groove 301, and the sliding plate 410 is pulled out of the through groove 501, so that the overlapping post 420 can be installed on the lower side of the extended end of the sliding plate 410. In order to make the sliding plate 410 and the overlapping post 420 completely retract into the hinge pad 120 and prevent them from protruding and affecting the subsequent installation of the hinge, in this embodiment, the outer side of the hinge pad 120 is recessed to form a groove 402 for the overlapping post 420 to be embedded.
[0045] In this embodiment, when installing the composite door leaf within the door frame 800, an auxiliary bracket 810 is first installed with screws at the hinge installation position on the bottom side of the door frame 800. The auxiliary bracket 810 is L-shaped and has overlapping holes. The operator uses the groove 402 to extend the sliding plate 410 and the overlapping post 420 out of the through groove 501. Then, the operator lifts the composite door leaf so that the overlapping post 420 is inserted into the overlapping hole, so that the auxiliary bracket 810, the sliding plate 410, and the overlapping post 420 cooperate to assist in lifting the composite door leaf. At this time, the operator can keep the composite door leaf in a raised state with a small amount of force, which facilitates the installation of the hinge by another operator. When the installation reaches the bottom hinge position, the auxiliary bracket 810 is removed, and the sliding plate 410 and the overlapping post 420 slide back into the through groove 501 to install the hinge.
[0046] Specifically, in combination Figure 7 As shown, in order to enable the lap post 420 to be installed and removed from the sliding plate 410, in this embodiment, the extended end of the sliding plate 410 is provided with a threaded hole 713, and the lap post 420 is provided with a threaded post 721 that is threadedly connected to the threaded hole 713.
[0047] In this embodiment, to prevent the sliding plate 410 and the overlapping post 420 from extending out of the through groove 501 during the transportation and handling of the composite door leaf, a locking groove 401 is formed on the outer side of the hinge pad 120, located above the through groove 501. A liftable locking plate 430 is provided in the locking groove 401. The locking plate 430 is L-shaped and its side does not protrude out of the locking groove 401, so as to avoid the locking plate 430 protruding and affecting the installation of the hinge on the outer side of the hinge pad 120.
[0048] The locking plate 430 is provided with a locking block 431 that can extend into the through groove 501, and the extended end of the sliding plate 410 is provided with a locking hole 712. When the sliding plate 410 retracts into the through groove 501, the locking block 431 extends into the locking hole 712 to lock the sliding plate 410.
[0049] Specifically, the locking groove 401 is provided with an upper mounting hole and a lower mounting hole. When the locking plate 430 is installed in the upper mounting hole with screws, the locking block 431 disengages from the through groove 501 to allow the sliding plate 410 to extend and retract within the through groove 501. When the sliding plate 410 retracts into the through groove 501, the locking plate 430 is installed in the lower mounting hole with screws to fix the locking plate 430. At this time, the locking block 431 extends into the through groove 501 and is inserted into the locking hole 712 to lock the sliding plate 410, preventing the sliding plate 410 and the overlapping post 420 from extending out during the transportation and handling of the composite door leaf, thus affecting its use.
[0050] In summary, the above description is only a preferred embodiment of this application. All equivalent changes and modifications made within the scope of this application should be covered by this application.
Claims
1. A composite door leaf that is easy to assemble, comprising a door stile (100) and a core material, characterized in that: The core material includes a core panel (210) embedded in the door stile (100), and door panels (220) flush with the corresponding sides of the door stile (100) are provided on both sides of the core panel (210). The two sides of the door stile (100) are covered with decorative panels (110). The door stile (100) includes a horizontal stile (230) and a vertical stile (240) that are spliced together in sequence. The horizontal stile (230) has pins (231) at both ends, and the vertical stile (240) has pins (231) at both ends for the corresponding pins (231) to extend into pin holes (241). The vertical stile (240) also has bolts (231) that pass through the corresponding pins (231) at both ends. Multiple removable hinge pads (120) are provided on the vertical mullion (240) on one side. The hinge pad (120) at the bottom is provided with a telescopic auxiliary lifting component, which is used to assist in lifting the composite door leaf.
2. The composite door leaf that is easy to assemble according to claim 1, characterized in that: The inner wall of the door stile (100) protrudes outward to form a mounting platform (201). The door panel (220) is installed on the corresponding side of the mounting platform (201) by countersunk bolts, so as to press the core plate (210) onto the inner side of the mounting platform (201).
3. The composite door leaf that is easy to assemble according to claim 1, characterized in that: A stepped groove (301) is provided on the side wall of the mullion (240), and the hinge pad (120) is installed in the stepped groove (301) by countersunk bolts.
4. A composite door leaf that is easy to assemble according to claim 1, characterized in that: A through groove (501) is provided in the hinge pad (120), and a limiting groove (601) is provided on both sides of the through groove (501) along its extension direction. The auxiliary lifting component includes a sliding plate (410) that can be pulled out into the through groove (501). The end of the sliding plate (410) located in the through groove (501) is provided with a limiting block (711) that slides in the corresponding limiting groove (601). The extended end of the sliding plate (410) is provided with a detachable overlapping post (420).
5. A composite door leaf that is easy to assemble according to claim 4, characterized in that: A locking groove (401) is provided on the outer side of the hinge pad (120) above the through groove (501). A lifting locking plate (430) is provided in the locking groove (401). A locking block (431) that can be inserted into the through groove (501) is provided on the locking plate (430). A locking hole (712) is provided on the extended end of the sliding plate (410). When the sliding plate (410) retracts into the through groove (501), the locking block (431) extends into the locking hole (712) to lock the sliding plate (410).
6. A composite door leaf that is easy to assemble according to claim 4, characterized in that: The sliding plate (410) has a threaded hole (713) on its extended end, and the lap post (420) has a threaded post (721) that is threaded into the threaded hole (713).
7. A composite door leaf that is easy to assemble according to claim 4, characterized in that: The outer surface of the hinge pad (120) is provided with a groove (402) for the retraction of the lap post (420).
