Keel anti-deformation structure for door leaf

By using vertical and horizontal keels to form the frame body in the door leaf frame, and opening stress relief grooves and reinforcing parts on the keels, the problem of easy deformation of single keel structure is solved, and higher overall rigidity and stability are achieved.

CN224049012UActive Publication Date: 2026-03-27GOLDENHOME LIVING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-28
Publication Date
2026-03-27

AI Technical Summary

Technical Problem

The existing single-frame structure of wooden door frames is prone to loosening or deformation due to external forces or wood deformation during long-term use. Furthermore, the placement of lock holes and hinge holes can damage the single-frame structure, leading to door deformation.

Method used

The frame body is constructed using vertically arranged vertical and horizontal keels, with internal reinforcing keels and stress relief grooves on the horizontal and vertical keels. Combined with partition strips and first and second reinforcing members, a composite anti-deformation structure is formed to disperse stress and enhance stability.

Benefits of technology

It improves the overall rigidity and torsional resistance of the door frame, prevents local deformation, enhances compressive strength and stability, and ensures that the structural strength is not affected by external forces.

✦ Generated by Eureka AI based on patent content.

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Abstract

A keel anti-deformation structure for a door leaf comprises two vertical keels which are vertically arranged, a transverse keel is connected between the top ends of the two vertical keels, another transverse keel is connected between the bottom ends of the two vertical keels, the vertical keels and the transverse keels are sequentially connected end to end to form a frame body, and at least two reinforcing keels are further arranged in the frame body. The overall rigidity and torsion resistance of the frame body are improved, and when the vertical keels in the frame body are damaged by the outside, the reinforcing keels can still support the frame body. At least one of the transverse keel and the vertical keel is further provided with a force release groove, when stress acts, the stress is effectively dispersed and released, and local deformation is prevented from occurring under the action of external force.
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Description

TECHNICAL FIELD

[0001] The utility model relates to door leaf keel frame technical field especially relates to a door leaf keel anti-deformation structure. BACKGROUND

[0002] The wood door frame that current general uses is all used single keel structure, and the overall strength and stability are relatively weak. In the long-term use process, the single keel structure is easy to cause the door body to loosen or deform due to external force or the deformation of wood itself. In addition, when the lock hole and the hinge hole are opened in the actual application scene, the structure of single keel is damaged, and the single keel is damaged without supporting keel, which is easy to cause the deformation of door leaf. UTILITY MODEL CONTENT

[0003] In view of the deficiencies in the background art, the utility model aims at providing a door leaf keel anti-deformation structure.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] A door leaf keel anti-deformation structure, including two vertical keels that set up vertically, the top end between two the vertical keel is connected with a horizontal keel, the bottom end between two the vertical keel is connected with another horizontal keel, each the vertical keel and the horizontal keel are sequentially connected to constitute a frame body, the inside of the frame body is further equipped with at least two reinforcing keels, two ends of each the reinforcing keel are fixed on two the horizontal keels, and the horizontal keel and at least one the vertical keel are further provided with a force relief groove.

[0006] Further, the force relief groove includes a first force relief groove and a second force relief groove oppositely arranged on the horizontal keel and / or the vertical keel.

[0007] Further, the second force relief groove is non-coaxially arranged with the first force relief groove.

[0008] Further, the first force relief groove is arranged on the inner side of the frame body, and the second force relief groove is arranged on the outer side of the frame body.

[0009] Further, the side wall of each the force relief groove close to the frame body and the outer side wall of the frame body maintain a spacing range of 150-155mm, the width range of the force relief groove is 2-4mm, and the depth range is 14-16mm.

[0010] Further, it further includes a plurality of partition strips, one side of each the partition strip is connected to the reinforcing keel, and the other side is connected to the vertical keel.

[0011] Further, a plurality of first reinforcing members are arranged at the included angle between the vertical keel and the horizontal keel, one side of the first reinforcing member is connected to the vertical keel, and the other side is connected to the horizontal keel.

[0012] Further, the first reinforcing member is magnetically connected to the frame body.

[0013] Further, a plurality of second reinforcing members are arranged between two adjacent reinforcing keels, and the two ends of the second reinforcing member are connected to the two reinforcing keels, respectively.

[0014] Further, the second reinforcing member is provided with a reinforcing rib structure.

[0015] The beneficial effects of the present application are as follows:

[0016] 1. The door leaf keel anti-deformation structure comprises two vertical keels arranged vertically, a horizontal keel connected between the top ends of the two vertical keels, another horizontal keel connected between the bottom ends of the two vertical keels, and a frame body formed by sequentially connecting the vertical keels and the horizontal keels end to end, wherein at least two reinforcing keels are further arranged in the frame body to improve the overall rigidity and torsional resistance of the frame body, and the reinforcing keels can still support the frame body when the vertical keel in the frame body is damaged by external factors.

[0017] 2. The door leaf keel anti-deformation structure comprises first and second force relief grooves arranged on the horizontal keel and / or in opposite directions, which can effectively disperse and release stress without affecting the structural strength.

[0018] 3. The door leaf keel anti-deformation structure further comprises a partition strip arranged between the reinforcing keel and the vertical keel to provide a buffer gap for the reinforcing keel and the vertical keel when subjected to stress, disperse the weight of the frame body and the impact force when the door leaf is opened and closed, and strengthen the compressive strength of the frame body.

[0019] 4. The door leaf keel anti-deformation structure further comprises a first reinforcing member arranged at the included angle between the vertical keel and the horizontal keel to strengthen the structure of the frame corner and further improve the compressive strength and stability.

[0020] 5. The door leaf keel anti-deformation structure further comprises a second reinforcing member arranged between two adjacent reinforcing keels, so that the entire frame structure can maintain high stability and anti-deformation ability when subjected to various external forces. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the utility model embodiments or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0022] Figure 1 It is a schematic view of the keel anti-deformation structure for door leaf of the utility model;

[0023] Figure 2 It is Figure 1 It is a sectional view along A-A direction;

[0024] Figure 3 It is an exploded view of the keel anti-deformation structure for door leaf of the utility model;

[0025] Figure 4 It is a schematic view of the force relief groove of the keel anti-deformation structure for door leaf of the utility model;

[0026] In the figure, 10, vertical keel;20, horizontal keel;30, reinforcing keel;401, first force relief groove;402, second force relief groove;50, partition strip;60, first reinforcing member;70, second reinforcing member. DETAILED DESCRIPTION

[0027] The utility model will be described in detail below. Figures 1 to 4

[0028] A keel anti-deformation structure for door leaf, as shown in the figure, comprises two vertical keels 10 arranged vertically, a horizontal keel 20 connected between the top ends of the two vertical keels 10, another horizontal keel 20 connected between the bottom ends of the two vertical keels 10, each vertical keel 10 and horizontal keel 20 connected in sequence to form a frame body, at least two reinforcing keels 30 arranged inside the frame body, both ends of each reinforcing keel 30 fixed on the two horizontal keels 20, and at least one of the horizontal keel 20 and vertical keel 10 provided with a force relief groove. Figure 1 The reinforcing keel 30 significantly enhances the overall strength and stability of the frame body, so that it can withstand greater external force impact. The force relief groove can effectively disperse and release stress when stress occurs, preventing local deformation of the frame body when subjected to external force.

[0029] ​In the embodiment, the stress relief groove includes first stress relief groove 401 and second stress relief groove 402 arranged on the transverse keel 20 and / or vertical keel 10 in opposite directions. When stress acts, the first stress relief groove 401 and the second stress relief groove 402 can play a regulating role, change the internal force of the transverse keel 20, and prevent it from bending and deforming. Further, the second stress relief groove 402 is arranged non-coaxially with the first stress relief groove 401, and the alternate arrangement of the first stress relief groove 401 and the second stress relief groove 402 can avoid the thickness of the transverse keel 20 at the corresponding position when arranged coaxially being too small and being prone to breaking. Further, the first stress relief groove 401 is arranged on the inner side of the frame body, and the second stress relief groove 402 is arranged on the outer side of the frame body, that is, the opening of the first stress relief groove 401 faces the inside of the frame body and communicates with the internal space surrounded by the frame body; the opening of the second stress relief groove 402 faces the outside of the frame body and communicates with the outside. The side wall of each stress relief groove close to the frame body maintains a distance range of 150-155mm from the outer side wall of the frame body, the width range of the stress relief groove is 2-4mm, and the depth range is 14-16mm.

[0030] Specifically, the transverse keel 20 is provided with a first stress relief groove 401 facing another transverse keel 20, and a second stress relief groove 402 having an opening direction opposite to that of the first stress relief groove 401, as shown in Figure 4 The width and depth of the opening of the second stress relief groove 402 are equal to those of the first stress relief groove 401, wherein the distance from the side wall edge of the first stress relief groove 401 close to the frame body to the outer side wall of the frame body is 150mm, the width is 3mm, and the depth is 15mm, so as to ensure that the stress can be dispersed to the maximum extent without affecting the structural strength of the transverse keel 20. In some embodiments, the distance between adjacent first stress relief groove 401 and second stress relief groove 402 can be set according to the specific use scene, but the distance should not be too close, which is prone to breaking.

[0031] In the embodiment, as shown in Figure 3 The embodiment further includes a plurality of partition strips 50, each of which is connected to the reinforcing keel 30 on one side and to the vertical keel 10 on the other side. Each partition strip 50 separates the adjacent reinforcing keel 30 and vertical keel 10 to provide a buffer gap when stressed, disperse the weight of the frame body and the impact force when the door leaf is opened and closed, and strengthen the compressive strength of the frame body. In addition, the partition strip 50 can also provide a mounting position for the door lock and the like. In the embodiment, two partition strips 50 are symmetrically arranged on both sides of the frame body, and the two sides of each partition strip 50 are connected to the reinforcing keel 30 and the vertical keel 10, respectively. Specifically, the partition strip 50 is a lock keel. In some embodiments, the number of partition strips 50 can be set according to actual needs.

[0032] In this embodiment, a plurality of first reinforcing members 60 are also included. Each first reinforcing member 60 is located at the angle between the vertical keel 10 and the horizontal keel 20, with one side connected to the vertical keel 10 and the other side connected to the horizontal keel 20. The first reinforcing member 60 is made of magnetic material and magnetically connected to the frame body. The first reinforcing member 60 has a right-angled triangular structure, with its two right-angled sides connected to the vertical keel 10 and the horizontal keel 20 respectively, reinforcing the four corners of the frame body, improving overall stability, and preventing deformation or tilting. In some embodiments, the first reinforcing member 60 can also be of other shapes, allowing the first reinforcing member 60, the vertical keel 10, and the horizontal keel 20 to connect and form a triangular structure, thereby enhancing the impact resistance of the frame body.

[0033] In this embodiment, a plurality of second reinforcing members 70 are also included. The second reinforcing members 70 are disposed between two adjacent reinforcing keels 30, with their ends connected to the two reinforcing keels 30 respectively. The second reinforcing members 70 are provided with reinforcing rib structures. The reinforcing rib design can effectively disperse the external forces borne by the door leaf, reduce local stress concentration, thereby improving the overall strength and impact resistance of the door leaf, and further enhancing the strength, stability, and deformation resistance of the frame body. Specifically, the second reinforcing members 70 divide the frame body into upper and lower parts, and the frame body has a symmetrical structure both vertically and horizontally.

[0034] In this embodiment, as Figure 2 As shown, the horizontal keel 20, the vertical keel 10, the partition strip 50, and the first reinforcing member 60 are made of 50mm wide LVL multilayer boards bonded together with adhesive. The reinforcing keel 30 is made of 15mm wide MDF and 33mm wide LVL multilayer boards bonded together with adhesive. The second reinforcing member 70 is made of 22mm wide composite multilayer board.

[0035] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A door stile anti-deformation structure comprising two vertical stiles arranged vertically, a horizontal stile connected between the top ends of the two vertical stiles, and another horizontal stile connected between the bottom ends of the two vertical stiles, each of the vertical stiles and the horizontal stiles being connected end to end in sequence to form a frame body, characterized in that, The inside of the frame body is further provided with at least two reinforcing keels, two ends of each of the reinforcing keels are fixed on two horizontal keels respectively, and the horizontal keel and at least one of the vertical keels are further provided with a force releasing groove. ​ 2. A sill anti-deformation structure for a door leaf according to claim 1, characterized in that, The force releasing groove comprises a first force releasing groove and a second force releasing groove which are oppositely arranged on the horizontal keel and / or the vertical keel.

3. A sill anti-deformation structure for a door leaf according to claim 2, characterized in that, The second force releasing groove is arranged non-coaxially with the first force releasing groove.

4. A sill anti-deformation structure for a door leaf according to claim 3, characterized in that, The first force releasing groove is arranged on the inside of the frame body, and the second force releasing groove is arranged on the outside of the frame body.

5. A sill anti-deformation structure for a door leaf according to claim 4, characterized in that, Each of the force releasing grooves is kept at a distance range of 150-155mm from the outside of the side wall of the frame body, the width of the force releasing groove is in a range of 2-4mm, and the depth of the force releasing groove is in a range of 14-16mm.

6. A sill anti-deformation structure for a door leaf according to claim 5, characterized in that, The frame body further comprises a plurality of partition strips, one side of each of the partition strips is connected to the reinforcing keel, and the other side of each of the partition strips is connected to the vertical keel.

7. A sill anti-deformation structure for a door leaf according to claim 5, characterized in that, The frame body further comprises a plurality of first reinforcing members, the first reinforcing members are arranged at the included angle between the vertical keel and the horizontal keel, one side of each of the first reinforcing members is connected to the vertical keel, and the other side of each of the first reinforcing members is connected to the horizontal keel.

8. A sill anti-deformation structure for a door leaf according to claim 7, characterized in that, The first reinforcing members are magnetically connected to the inside of the frame body.

9. A sill anti-deformation structure for a door leaf according to claim 5, characterized in that, The frame body further comprises a plurality of second reinforcing members, the second reinforcing members are arranged between two adjacent reinforcing keels, and two ends of each of the second reinforcing members are connected to two reinforcing keels respectively.

10. A sill anti-deformation structure for a door leaf according to claim 9, characterized in that, The second reinforcing members are provided with a reinforcing rib structure.