High-strength fireproof wood-plastic door pocket convenient to adjust
By using an adjustable wood-plastic composite door frame structure and a staggered tooth connection, the problems of fixed door frame size and insufficient strength in traditional door frames are solved, achieving high strength and convenient adjustment of the door frame to meet the needs of door openings of different sizes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSHAN CHURUN NEW MATERIAL CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-04-17
AI Technical Summary
Traditional door frames have fixed dimensions, making it difficult to adapt to door openings of different sizes. The strength decreases during the adjustment process, affecting the installation quality and service life.
The adjustable wood-plastic composite door frame structure, through the cooperation of slots and fasteners, enables multi-segment micro-adjustment splicing. Combined with the staggered tooth connection of the side guards, it ensures the overall strength and stability of the door frame.
It achieves adjustable door frame size, high strength, convenient installation, meets fire protection requirements, and improves the service life and safety of the door frame.
Smart Images

Figure CN224134481U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of fireproof door frame technology, and in particular to a high-strength fireproof wood-plastic door frame that is easy to adjust. Background Technology
[0002] In the process of building decoration, the door frame, as an important supporting component of the door, plays a role in fixing the door, beautifying the surrounding environment, and protecting the wall.
[0003] Traditional door frames are mostly of fixed dimensions. When faced with door openings of different sizes, they often need to be custom-made or involve complex on-site cutting and splicing. This not only increases the difficulty and cost of construction but may also lead to unstable installation quality. Moreover, some adjustable door frames are prone to a decrease in strength during adjustment, affecting the lifespan and safety of the door frame. Utility Model Content
[0004] To address the problems of inconvenient size adjustment and insufficient strength after adjustment in existing door frames, this application provides a high-strength fireproof wood-plastic door frame that is easy to adjust.
[0005] This application provides a conveniently adjustable, high-strength, fire-resistant wood-plastic door frame using the following technical solution:
[0006] A high-strength, fire-resistant wood-plastic composite door frame that is easy to adjust includes three door frame panels that are spliced together to form a U-shaped door frame. Each door frame panel has a slot on both sides, and a side guard plate is detachably installed on the inner side of the slot. The door frame panel has a door stop groove for restricting the door leaf. Each door frame panel includes an end plate one and an end plate two, and a plurality of adjustable connecting plates one are provided between the end plate one and the end plate two.
[0007] Preferably, the first end plate includes a splicing plate, and a lower splicing plate is provided on the side of the splicing plate near the first connecting plate. The second end plate includes a splicing plate, and an upper splicing plate is provided on the side of the splicing plate near the first connecting plate to cooperate with the lower splicing plate.
[0008] Preferably, the connecting plate one includes a connecting plate, and a lower connecting plate two is disposed on the connecting plate near the lower connecting plate one. The lower connecting plate two has the same structure as the upper connecting plate one. An upper connecting plate two is disposed on the connecting plate near the upper connecting plate one. The upper connecting plate two has the same structure as the lower connecting plate one.
[0009] Preferably, both the lower panel 2 and the upper panel 1 are provided with a plurality of positioning holes, both the upper panel 2 and the lower panel 1 are provided with a plurality of sliding grooves, and fasteners are provided in the positioning holes.
[0010] Preferably, the fastener includes a bolt slidably disposed in a groove, the end of the bolt passing through a corresponding positioning hole and connected with a nut, and a support sleeve disposed on the bolt, the support sleeve being respectively located between the corresponding lower panel one and upper panel two, upper panel one and lower panel two, and lower panel two and upper panel two.
[0011] Preferably, the side guard plate includes an end guard plate one and an end guard plate two, and a plurality of connecting plates two are provided between the end guard plate one and the end guard plate two.
[0012] Preferably, the first end guard plate includes an L-shaped plate, and the side of the L-shaped plate near the second connecting plate is provided with a misaligned tooth. The second end guard plate includes an L-shaped plate, and the side of the L-shaped plate near the second connecting plate is provided with a misaligned tooth.
[0013] Preferably, the connecting plate two includes an L-shaped plate three, and the L-shaped plate three is provided with a misaligned tooth three near the misaligned tooth one. The misaligned tooth three has the same structure as the misaligned tooth two. The L-shaped plate three is provided with a misaligned tooth four near the misaligned tooth two. The misaligned tooth four has the same structure as the misaligned tooth one.
[0014] In summary, this application includes the following beneficial technical effects:
[0015] By using the door frame panel, side guard panel, door stop groove, and fasteners in combination, the distance between end plate one, end plate two, and connecting plate one can be finely adjusted to adapt to door openings of different sizes. Moreover, the use of multi-segment fine-adjustment splicing can ensure the overall strength of the adjustable door frame. Compared with existing technologies, it has the effect of convenient adjustment and high strength. Attached Figure Description
[0016] Figure 1 This is a first-view three-dimensional structural diagram of an embodiment of the application;
[0017] Figure 2 This is a second-view perspective three-dimensional structural diagram of an embodiment of the application;
[0018] Figure 3 This is a third-view stereoscopic structural diagram of an embodiment of the application.
[0019] Explanation of reference numerals in the attached drawings: 1. Door frame panel; 101. End panel one; 1011. Splicing panel one; 1012. Lower splicing panel one; 102. End panel two; 1021. Splicing panel two; 1022. Upper splicing panel one; 103. Connecting plate one; 1031. Connecting plate; 1032. Lower splicing panel two; 1033. Upper splicing panel two; 2. Side guard panel; 201. End guard panel one; 2011. L-shaped plate one; 2012. Offset tooth one; 202. End guard panel two; 2021. L-shaped plate two; 2022. Offset tooth two; 203. Connecting plate two; 2031. L-shaped plate three; 2032. Offset tooth three; 2033. Offset tooth four; 3. Door stop groove; 4. Fastener; 401. Bolt; 402. Support sleeve; 5. Slot. Detailed Implementation
[0020] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.
[0021] This application discloses a high-strength, fire-resistant wood-plastic door frame that is easy to adjust. (See also...) Figure 1-3 A high-strength, fire-resistant wood-plastic door frame that is easy to adjust consists of door frame panel 1, side guard plate 2, fasteners 4 and other components, achieving the advantages of adjustable size, high strength, fire resistance and easy installation and maintenance.
[0022] Reference Figure 1 The door frame panel 1 is the main structure of the entire door frame, consisting of three panels joined together to form a U-shaped door frame. The door frame panel 1 is made of wood-plastic composite material. This material is produced by mixing wood fibers or plant fibers with plastic and then extruding it at high temperatures. This gives the door frame panel 1 not only high strength, capable of withstanding the weight of the door and various forces during daily use, but also a certain degree of fire resistance, which can prevent the spread of fire to some extent, meeting the building's fire safety requirements. The door frame panel 1 is equipped with a door stop groove 3 to restrict the door leaf. When the door leaf is closed, the door edge contacts the door stop groove 3, which prevents the door leaf from moving further inward or outward, ensuring the door is accurately positioned when closed.
[0023] Reference Figure 2Each door frame panel 1 includes an end panel 101 and an end panel 102, with several adjustable connecting plates 103 positioned between them. The end panel 101 consists of a splicing plate 1011 and a lower splicing plate 1012. The splicing plate 1011 is extruded into a specific shape using a mold, while the lower splicing plate 1012 is machined and positioned on the side of the splicing plate 1011 near the connecting plates 103. The end panel 102 consists of a splicing plate 1021 and an upper splicing plate 1022. The splicing plate 1021 is also extruded using a mold, and the upper splicing plate 1022 is positioned on the side of the splicing plate 1021 near the connecting plates 103, and the upper splicing plate 1022 works in conjunction with the lower splicing plate 1012. This design allows end plate 101 and end plate 2 102 to fit tightly together when spliced with connecting plate 103, ensuring the overall structural strength of the door frame.
[0024] Reference Figure 1 The connecting plate 103 includes a connecting plate 1031. A lower panel 1032 is located on the side of the connecting plate 1031 near the lower panel 1012. The lower panel 1032 has the same structure as the upper panel 1022. An upper panel 1033 is located on the side of the connecting plate 1031 near the upper panel 1022. The upper panel 1033 has the same structure as the lower panel 1012. Both the lower panel 1032 and the upper panel 1022 have several positioning holes, and both the upper panel 1033 and the lower panel 1012 have several sliding grooves, each 2cm in length. This structural design facilitates the adjustment of the door frame size. When adjusting the door frame size, loosen the nut on bolt 401. Since bolt 401 can slide within the groove, it pushes connecting plate 103 along the groove direction, changing the relative position between connecting plate 103 and end plate 101 and end plate 102. After aligning the positioning holes on lower panel 1032 with those on upper panel 1022, and on upper panel 1033 with those on lower panel 1012, tighten the nut to fix bolt 401 in the positioning hole, thus adjusting the overall door frame size to accommodate different door opening sizes. Simultaneously, this multi-segment micro-adjustment splicing method ensures the overall structural strength of the door frame while adjusting the size. This is because the cooperation of the positioning holes and grooves at each splicing part, along with the subsequent tightening of bolt 401, effectively disperses the various forces borne by the door frame during use.
[0025] Reference Figure 3 The side guard plate 2 is installed on both sides of the door frame plate 1 and is detachably connected to the door frame plate 1 through the slot 5. The side guard plate 2 includes end guard plate 1 201 and end guard plate 202, and a plurality of connecting plates 203 are provided between end guard plate 1 201 and end guard plate 202.
[0026] Reference Figure 3 End guard plate 201 is composed of L-shaped plate 2011 and staggered tooth 2012. L-shaped plate 2011 is formed by extrusion molding, and staggered tooth 2012 is set on the side of L-shaped plate 2011 near connecting plate 203 by machining. End guard plate 202 is composed of L-shaped plate 2021 and staggered tooth 2022. L-shaped plate 2021 is formed by extrusion molding, and staggered tooth 2022 is set on the side of L-shaped plate 2021 near connecting plate 203. Connecting plate 203 includes L-shaped plate 3 2031, with a misaligned tooth 3 2032 on the side of L-shaped plate 3 2031 near the misaligned tooth 1 2012. The misaligned tooth 3 2032 has the same structure as the misaligned tooth 2 2022. A misaligned tooth 4 2033 is also provided on the side of L-shaped plate 3 2031 near the misaligned tooth 2 2022, and the misaligned tooth 4 2033 has the same structure as the misaligned tooth 1 2012. (Refer to...) Figure 3 When installing side guard plate 2, align the corresponding parts on end guard plate 1 201, end guard plate 202, and connecting plate 203 with the slots 5 on the door frame plate 1, and then insert them into the slots 5. At this time, end guard plate 1 201, end guard plate 202, and connecting plate 203 are connected by interlocking teeth 1 2012, 2022, 3 2032, and 4 2033, forming an integral side guard structure with a tooth depth of 3cm. This connection method not only enhances the aesthetics of the door frame but also provides further protection for the door frame plate 1, improving the overall strength and stability of the door frame. Simultaneously, side guard plate 2 can be detached and installed via slots 5, facilitating installation and removal according to actual needs during construction, and making later maintenance or replacement more convenient.
[0027] Reference Figure 2 Fastener 4 is used to connect end plate 101, end plate 102 and connecting plate 103 in door frame plate 1 to ensure the overall structure of the door frame is stable. Fastener 4 includes bolt 401 slidably disposed in the slide groove. The end of bolt 401 passes through the corresponding positioning hole and is connected with a nut. Support sleeve 402 is provided on bolt 401.
[0028] Reference Figure 1 The slot 5 is formed by mold during the manufacturing process of the door frame panel 1. The slot 5 is provided with anti-slip serrations to achieve a detachable connection between the side guard panel 2 and the door frame panel 1. The corresponding part on the side guard panel 2 can be smoothly inserted into the slot 5 and can remain stable after insertion without easily falling off.
[0029] The implementation principle of a conveniently adjustable high-strength fireproof wood-plastic door frame in this application embodiment is as follows:
[0030] When installing the door frame, the construction workers first measure the door opening size. If the door opening size differs from the standard door frame size, they place end plate 101 and end plate 102 of door frame panel 1 on both sides of the door opening. Then, based on the size difference, they loosen the nuts of fastener 4 and slide connecting plate 103 between end plate 101 and end plate 102 to align the positioning holes of lower panel 1032 with upper panel 1022 and upper panel 1033 with lower panel 1012. Finally, they tighten the nuts to complete the fine-tuning of the door frame size. Next, the installed door frame panel 1 is fixed to the door opening wall using expansion bolts or other methods. Afterwards, the construction workers sequentially aligned the end guard plate 1 (201), end guard plate 2 (202), and connecting plate 2 (203) of side guard plate 2 with the slots 5 on both sides of door frame plate 1, inserting them so that the misaligned teeth 1 (2012), misaligned teeth 2022, misaligned teeth 3 (2032), and misaligned teeth 4 (2033) interlocked, completing the installation of side guard plate 2. Finally, decorative paper was applied to the surfaces of side guard plate 2 and door frame plate 1. After the door is installed, when the door is closed, the door edge contacts the door stop groove 3 on door frame plate 1. The door stop groove 3 restricts further movement of the door, ensuring accurate closing position and providing a buffering effect. The multi-segment micro-adjustment splicing structure and the fastening effect of fasteners 4 ensure the high strength and stability of the door frame, meeting daily use needs.
[0031] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.
[0032] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.
[0033] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A high-strength fireproof wood-plastic door pocket with convenient adjustment, comprising three door pocket plates (1) spliced to form a U-shaped door frame, characterized in that: The door frame (1) is provided with slots (5) on both sides. A side guard plate (2) is detachably provided on the inner side of the slot (5). The door frame (1) is provided with a door stop groove (3) for restricting the door leaf. The door frame (1) includes an end plate one (101) and an end plate two (102). Several adjustable connecting plates one (103) are provided between the end plate one (101) and the end plate two (102).
2. The high-strength fireproof wood-plastic door set with convenient adjustment according to claim 1, characterized in that: The first end plate (101) includes a splicing plate (1011), and a lower splicing plate (1012) is provided on the side of the splicing plate (1011) near the connecting plate (103). The second end plate (102) includes a splicing plate (1021), and an upper splicing plate (1022) is provided on the side of the splicing plate (1021) near the connecting plate (103) to cooperate with the lower splicing plate (1012).
3. The easily adjustable, high-strength, fire-resistant wood-plastic door frame according to claim 2, characterized in that: The connecting plate one (103) includes a connecting plate (1031). A lower connecting plate two (1032) is provided on the connecting plate (1031) near the lower connecting plate one (1012). The lower connecting plate two (1032) has the same structure as the upper connecting plate one (1022). An upper connecting plate two (1033) is provided on the connecting plate (1031) near the upper connecting plate one (1022). The upper connecting plate two (1033) has the same structure as the lower connecting plate one (1012).
4. The high-strength fireproof wood-plastic door set with convenient adjustment according to claim 3, characterized in that: The lower panel 2 (1032) and the upper panel 1 (1022) are each provided with a number of positioning holes, the upper panel 2 (1033) and the lower panel 1 (1012) are each provided with a number of sliding grooves, and fasteners (4) are provided in the positioning holes.
5. The high-strength fireproof wood-plastic door set with convenient adjustment according to claim 4, characterized in that: The fastener (4) includes a bolt (401) slidably disposed in a groove. The end of the bolt (401) passes through a corresponding positioning hole and is connected to a nut. A support sleeve (402) is provided on the bolt (401). The support sleeve (402) is located between the corresponding lower panel one (1012) and upper panel two (1033), upper panel one (1022) and lower panel two (1032), and lower panel two (1032) and upper panel two (1033).
6. The high-strength fireproof wood-plastic door set with convenient adjustment according to claim 1, characterized in that: The side guard plate (2) includes an end guard plate one (201) and an end guard plate two (202), and a plurality of connecting plates two (203) are provided between the end guard plate one (201) and the end guard plate two (202).
7. The high-strength fireproof wood-plastic door set with convenient adjustment according to claim 6, characterized in that: The first end guard plate (201) includes an L-shaped plate (2011), and the first L-shaped plate (2011) has a misaligned tooth (2012) on the side near the second connecting plate (203). The second end guard plate (202) includes an L-shaped plate (2021), and the second L-shaped plate (2021) has a misaligned tooth (2022) on the side near the second connecting plate (203).
8. The high-strength fireproof wood-plastic door set with convenient adjustment according to claim 7, characterized in that: The connecting plate two (203) includes an L-shaped plate three (2031), and an offset tooth three (2032) is provided on the L-shaped plate three (2031) near the offset tooth one (2012). The offset tooth three (2032) has the same structure as the offset tooth two (2022). An offset tooth four (2033) is provided on the L-shaped plate three (2031) near the offset tooth two (2022). The offset tooth four (2033) has the same structure as the offset tooth one (2012).