Door frame and door lock anti-scraping piece, door frame anti-scraping structure and anti-scraping door

By designing anti-scratch plates for door frames and locks, the problem of door locks scratching door frames has been solved, achieving a highly effective anti-scratch effect and an aesthetically pleasing installation solution.

CN223881011UActive Publication Date: 2026-02-06XIAMEN GUANXING CANAN INTELLIGENT DOOR IND CO LTD
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Patent Information

Application Number
CN202520300920.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-25
Publication Date
2026-02-06
Estimated Expiration
2035-02-25

AI Technical Summary

Technical Problem

Existing door locks are prone to scratching the door frame during use, and the traditional tin foil protection method is easily damaged, affects the appearance, and is inconvenient to clean.

Method used

Design a door frame and door lock anti-scratch plate, including a flat plate, a bent part and a mating part, with a nitriding layer and a carburizing layer on the surface, and attach it to the door frame with double-sided adhesive. The corner structure corresponds to the door lock tongue to form an anti-scratch structure of uniform thickness.

Benefits of technology

It effectively prevents door locks from scratching the door frame, is easy to install, improves scratch resistance, enhances stability and aesthetics, reduces the risk of damage, and extends service life.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223881011U_ABST
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Abstract

The utility model discloses a door frame and door lock anti-scraping piece, a door frame anti-scraping structure and an anti-scraping door, the door frame and door lock anti-scraping piece comprises a surface plate, a bending part and a matching part, the surface plate and the matching part are respectively arranged on two sides of the bending part to form a corner structure, and a double faced adhesive tape is arranged on the inner side of the corner structure; a nitriding layer and a carburizing layer are sequentially arranged on the outer side surface of the corner structure from outside to inside; the door frame anti-scraping structure comprises a door frame body, a transition corner and a lock catch installation face are arranged at the matching position of the door frame body and a door plate, a door frame lock catch plate is arranged on the lock catch installation face, and a door frame door lock anti-scraping piece is arranged on the transition corner. The height of the door frame and door lock anti-scraping piece corresponds to the position of the door plate spring bolt. The flat panel, the bending part and the matching part in the door frame and door lock scratch-resistant sheet are respectively matched with the lock catch mounting surface, the transition corner and the other side surface of the transition corner through double faced adhesive tapes; the anti-scraping piece provides comprehensive protection for the door frame, and direct friction and collision between the door lock and the corner of the door frame are avoided.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to door frame protection technical field, especially relate to a door frame door lock anti -scratch piece, door frame anti -scratch structure and anti -scratch door. BACKGROUND

[0002] The door lock mechanism used by the household door comprises a lock tongue and a lock shell, the lock tongue extends out of the lock shell panel and into the lock tongue hole on the corresponding door frame during use, the lock tongue is in the extended state in the natural state, and the lock tongue contacts the corresponding door frame during the opening and closing of the door, so that the door frame is easily scratched.

[0003] The general solution is to paste a tin paper piece at the scratch position to protect the door frame. However, the tin paper piece is easily damaged during long-term use due to its low strength, and the glue used to paste the tin paper piece will also adhere to the lock tongue, the door frame and the door frame lock catch plate, affecting the overall appearance and making subsequent cleaning troublesome.

[0004] Therefore, the door frame door lock anti-scratch piece, the door frame anti-scratch structure and the anti-scratch door are provided to protect the door frame and prevent the lock tongue of the door lock from scratching the door frame. UTILITY MODEL CONTENTS

[0005] The utility model provides a door frame door lock anti-scratch piece, a door frame anti-scratch structure and an anti-scratch door, and aims to solve the problems pointed out in the background art.

[0006] To solve the above technical problems, the utility model adopts the following technical scheme:

[0007] A door frame door lock anti-scratch piece comprises a plane plate, a bending part and a matching part, the plane plate and the matching part are arranged on both sides of the bending part respectively to form a corner structure, and double-sided adhesive tape is arranged on the inner side of the corner structure.

[0008] The outer side surface of the corner structure is sequentially provided with a nitriding layer and a carburizing layer from the outside to the inside.

[0009] Further, the matching part is a plane structure, a circular arc structure or a corner structure, and the edges of the corner structure are all provided with rounded corners.

[0010] Further, the plane plate, the bending part and the matching part have the same thickness of 3-5 mm.

[0011] Further, the plane plate is provided with an extension plate on the side away from the bending part, and the thickness of the extension plate is half of the thickness of the plane plate.

[0012] Further, the application further provides a door frame scratch-proof structure, comprising: a door frame body, wherein a transition corner and a lock catch mounting surface are arranged at a door panel cooperation position of the door frame body, a door frame lock catch plate is arranged on the lock catch mounting surface, and the door frame door lock scratch-proof piece is arranged on the transition corner;

[0013] The height of the door frame door lock scratch-proof piece corresponds to the position of the door panel lock tongue.

[0014] The plane plate, the bending part and the cooperation part in the door frame door lock scratch-proof piece are matched with the lock catch mounting surface, the transition corner and the other side wall of the transition corner respectively through double-sided adhesive tapes.

[0015] Further, the four corners of the door frame lock catch plate are fixedly connected with the lock catch mounting surface through locking screws.

[0016] Further, one side of the plane plate away from the bending part is in abutment with the door frame lock catch plate, and the extension plate is located between the door frame lock catch plate and the lock catch mounting surface.

[0017] Further, the shape of the cooperation part is matched with the shape of the side wall of the transition corner away from the lock catch mounting surface.

[0018] Further, the application further provides a scratch-proof door, comprising the door frame scratch-proof structure, a door leaf is rotatably connected to the door frame body, a door lock is arranged on the door leaf, the door lock comprises a lock tongue, and the lock tongue is matched with the door frame door lock scratch-proof piece.

[0019] Compared with the prior art, the application has the following technical effects:

[0020] 1. The door frame door lock scratch-proof piece can well fit the corner part of the door frame and the door through the corner structure formed by the plane plate, the bending part and the cooperation part. In actual life, the corner part of the door frame is an area that is easily scratched in the door lock opening and closing process, the corner design of the scratch-proof piece can accurately cover the vulnerable area, provide comprehensive protection for the door frame, avoid the direct friction and collision of the door lock with the door frame corner, thereby effectively reducing scratches and damage; the double-sided adhesive tape is arranged on the inner side of the corner structure, so that the installation process of the scratch-proof piece is greatly simplified. Users do not need to use complex tools and professional skills, but only need to directly paste the scratch-proof piece on the corresponding position of the door frame through the double-sided adhesive tape, thereby saving installation time and cost. It can be used as an additional structure of the previously sold household door for protection without too complex structural modification.

[0021] 2.The door frame door lock scratch-proof sheet in the door frame scratch-proof structure, the height of the door frame door lock scratch-proof sheet corresponds to the position of the door plate bolt, the design ensures that the bolt can accurately cooperate with the scratch-proof sheet during normal use of the door lock, when the bolt is extended or retracted, the scratch-proof sheet is just acted on, so that the scratch-proof sheet can maximize its protection function, avoiding the bolt directly contacting and scratching the door frame, and improving the pertinence and effectiveness of the scratch-proof effect;

[0022] The plane plate, the bending part and the matching part in the door frame door lock scratch-proof sheet are matched with the lock catch mounting surface, the transition corner and the other side surface of the transition corner through the double-sided adhesive, the close design makes the scratch-proof sheet perfectly fit the door frame body, the close fit not only enhances the stability of the scratch-proof sheet and prevents it from loosening or shifting during use, but also avoids impurities such as dust and moisture from entering the gap between the scratch-proof sheet and the door frame, reducing the corrosion and damage to the door frame caused by impurity accumulation. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is an isometric view of the door frame door lock scratch-proof sheet according to the utility model;

[0024] Figure 2 is a plan view of the door frame door lock scratch-proof sheet according to the utility model;

[0025] Figure 3 is a schematic view of the nitriding layer and the carburizing layer of the door frame door lock scratch-proof sheet according to the utility model;

[0026] Figure 4 is an isometric view of the door frame scratch-proof structure according to the utility model;

[0027] Figure 5 is a front view of the door frame scratch-proof structure according to the utility model;

[0028] Figure 6 is a plan view of the door frame scratch-proof structure according to the utility model.

[0029] In the drawings:

[0030] 1, plane plate; 101, extension plate;

[0031] 2, bending part; 3, matching part; 4, double-sided adhesive; 5, nitriding layer; 6, carburizing layer; 7, door frame body; 701, transition corner; 702, lock catch mounting surface;

[0032] 8, door frame lock catch plate; 9, locking screw. DETAILED DESCRIPTION

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments of this application and the accompanying drawings.

[0034] like Figures 1-3 As shown, a door frame and door lock anti-scratch plate includes: a flat plate 1, a bending part 2, and a mating part 3. The flat plate 1 and the mating part 3 are respectively disposed on both sides of the bending part 2 to form a corner structure. Double-sided adhesive 4 is disposed on the inner side of the corner structure.

[0035] The outer surface of the corner structure is provided with a nitriding layer 5 and a carburizing layer 6 from the outside to the inside.

[0036] The corner structure formed by the flat plate 1, the bent part 2, and the mating part 3 can fit well into the corner where the door frame contacts the door. In real life, the corner of the door frame is an area that is easily scratched during the opening and closing of the door lock. The corner design of this anti-scratch plate can accurately cover this vulnerable area, providing comprehensive protection for the door frame and preventing the door lock from directly rubbing and colliding with the corner of the door frame, thereby effectively reducing scratches and damage.

[0037] The installation of the scratch-resistant sheet by attaching double-sided adhesive to the inside of the corner structure greatly simplifies the process. Users do not need complicated tools or professional skills; they can simply stick the scratch-resistant sheet directly to the corresponding position on the door frame using the double-sided adhesive, saving installation time and costs. It can be used as an additional structure to protect the doors of existing homes without requiring complex structural modifications.

[0038] The carburized layer 6 and the nitrided layer 5 work together to give the scratch-resistant sheet both high hardness and wear resistance, as well as good toughness and impact resistance, thus better adapting to complex usage environments and providing reliable protection for the door frame.

[0039] like Figures 1-2 As shown, the mating part 3 has a planar structure, an arc structure, or a corner structure, and the edges of the corner structure are all rounded. The rounded corner design eliminates the sharp corners of the anti-scratch pad's edges, preventing people from accidentally bumping into the edges of the anti-scratch pad and getting injured in daily activities; the rounded corner treatment makes the overall appearance of the anti-scratch pad more rounded and smooth, giving it a delicate and soft feel, and improving the aesthetics of the anti-scratch pad.

[0040] like Figure 2 As shown, the thickness of the flat plate 1, the bent part 2, and the mating part is the same, which is 3-5mm.

[0041] The three have the same thickness to form a uniform mechanical structure of the door frame door lock anti-scratch piece. In the daily use of the door lock, whether the lock tongue hits the bent part or the friction, extrusion and other forces generated by the bent part 2 and the plane plate 1 during the opening and closing of the door, the uniform thickness can make the anti-scratch piece more evenly disperse and bear these external forces, avoid stress concentration caused by local thickness difference, thereby ensuring the strength and stability of the anti-scratch piece as a whole, and reducing the risk of deformation and damage.

[0042] As shown in Figure 6 The plane plate 1 is provided with an extension plate 101 away from the bent part 2, and the thickness of the extension plate 101 is half of the plane plate 1.

[0043] As shown in Figures 4-6 The application also provides a door frame anti-scratch structure, which comprises a door frame body 7, a transition corner 701 and a lock catch mounting surface 702 are arranged at the cooperation position of the door frame body 7 and the door plate, a door frame lock catch plate 8 is arranged on the lock catch mounting surface 702, and the door frame door lock anti-scratch piece as described above is arranged on the transition corner 701.

[0044] The height of the door frame door lock anti-scratch piece corresponds to the position of the door plate lock tongue;

[0045] The plane plate 1, the bent part 2 and the cooperation part 3 in the door frame door lock anti-scratch piece are matched with the lock catch mounting surface 702, the transition corner 701 and the other side surface of the transition corner 701 respectively through the double-sided adhesive tape 4.

[0046] The height of the door frame door lock anti-scratch piece corresponds to the position of the door plate lock tongue, which ensures that the lock tongue can accurately cooperate with the anti-scratch piece during normal use of the door lock. When the lock tongue is extended or retracted, it just acts on the anti-scratch piece, so that the anti-scratch piece can maximize its protection function, avoiding direct contact and scratching of the door frame by the lock tongue, and improving the pertinence and effectiveness of the anti-scratch effect.

[0047] As shown in Figure 5 The four corners of the door frame lock catch plate 8 are fixedly connected with the lock catch mounting surface 702 through the locking screws 9.

[0048] As shown in Figures 5-6 The plane plate 1 away from the bent part 2 abuts against the door frame lock catch plate 8, and the extension plate 101 is located between the door frame lock catch plate 8 and the lock catch mounting surface 702.

[0049] The side of the flat plate 1 away from the bending part 2 is in abutment with the door frame lock catch plate 8, which enables the flat plate to directly protect the lock catch mounting surface. During daily use of the door lock, the lock tongue frequently enters and exits the lock catch, which will rub against and collide with the lock catch mounting surface. The abutment of the flat plate 1 can effectively prevent the lock tongue from directly scratching and damaging the lock catch mounting surface, thereby prolonging the service life thereof.

[0050] The extension plate 101 is clamped and fixed by the door frame lock catch plate 8 and the lock catch mounting surface 702 through the position setting of the extension plate 101 between the door frame lock catch plate 8 and the lock catch mounting surface 702, and the firm fixing effect can be obtained by cooperating with the double-sided adhesive tape 4, thereby avoiding accidental falling.

[0051] As shown in Figure 6 The shape of the matching part 3 is matched with the shape of the side wall of the transition corner 701 away from the lock catch mounting surface 702.

[0052] In a specific embodiment, the application further provides a scratch-proof door, which comprises the door frame scratch-proof structure as described above, the door frame body 7 is rotationally connected with a door leaf, the door lock is arranged on the door leaf, and the door lock comprises a lock tongue, which is matched with the door frame door lock scratch-proof sheet.

[0053] The above only describes the preferred embodiments of the application, and it should be noted that, for those skilled in the art, without departing from the creative concept of the application, a number of modifications and improvements can be made, which all belong to the protection scope of the application.

Claims

1. A door frame door lock scratch shield, characterized in that, It comprises a flat plate (1), a bending part (2) and a matching part (3), the flat plate (1) and the matching part (3) are arranged on both sides of the bending part (2) respectively, forming a corner structure, the inner side of the corner structure is provided with double-sided adhesive tape (4); The outer side surface of the corner structure is sequentially provided with a nitriding layer (5) and a carburizing layer (6) from outside to inside. The matching part (3) is a flat structure, a circular arc structure or a corner structure, and the edges of the corner structure are all provided with rounded corners.

2. A door check for a door frame lock according to claim 1, wherein The thickness of the flat plate (1), the bending part (2) and the matching part is the same, which is 3-5mm.

3. A door check for a door frame lock according to claim 2, wherein The side of the flat plate (1) away from the bending part (2) is provided with an extension plate (101), and the thickness of the extension plate (101) is half of the thickness of the flat plate (1).

4. A door check for a door frame lock according to claim 3, wherein It comprises a door frame body (7), the door frame body (7) is provided with a transition corner (701) and a lock mounting surface (702) at the matching position of the door plate, the lock mounting surface (702) is provided with a door frame lock plate (8), and the transition corner (701) is provided with the door frame door lock scratch-proof sheet according to claim 4; 5. A door frame scratch prevention structure characterized by comprising: The height of the door frame door lock scratch-proof sheet corresponds to the position of the door plate bolt; The flat plate (1), the bending part (2) and the matching part (3) in the door frame door lock scratch-proof sheet are matched with the lock mounting surface (702), the transition corner (701) and the other side surface of the transition corner (701) respectively through the double-sided adhesive tape (4). The four corners of the door frame lock plate (8) are fixedly connected with the lock mounting surface (702) through locking screws (9). The side of the flat plate (1) away from the bending part (2) abuts against the door frame lock plate (8), and the extension plate (101) is located between the door frame lock plate (8) and the lock mounting surface (702).

6. A door frame scratch prevention structure according to claim 5, characterized in that The shape of the matching part (3) is matched with the shape of the side wall of the transition corner (701) away from the lock mounting surface (702).

7. A door frame scratch prevention structure according to claim 5, wherein The door frame scratch-proof structure comprises the door frame body (7), a door leaf is rotatably connected to the door frame body (7), a door lock is arranged on the door leaf, the door lock comprises a bolt, and the bolt is matched with the door frame door lock scratch-proof sheet.

8. The door frame scratch prevention structure according to claim 5, characterized by ​ 9. A scratch resistant door characterized by, ​