A door lock protector

CN224664398UActive Publication Date: 2026-08-21GUANGZHOU NIUGUANJIA TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202520775798.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-22
Publication Date
2026-08-21
Estimated Expiration
2035-04-22

AI Technical Summary

Technical Problem

[0003]本实用新型旨在克服上述现有技术的至少一种缺陷(不足),提供一种车门锁保护套,用于解决现有的车门锁保护套更换拆卸后粘胶会粘贴在车身上难以去除的问题

Benefits of technology

[0024]Compared with existing technologies, the advantages of this utility model are as follows: This car door lock protective cover uses a magnetic attachment on its body to attach it to the car body, making installation and removal more convenient and quick. After removal, there is no adhesive residue that is difficult to remove from the car body. The protective cover body is made of silicone material, which has high elasticity and wear resistance, effectively resisting friction. It is also soft, easy to install, and has good anti-aging properties. The inner surface of the protective cover body has countersunk holes with flanges at the openings, forming circular openings. The magnetic attachment can be installed in the countersunk holes by pressing it down. The flange prevents the magnetic attachment from falling off. Compared with through holes, countersunk holes prevent rainwater from entering and affecting the magnetic attachment's adhesion, while also being more aesthetically pleasing and preventing the accumulation of dust and rainwater. After the magnetic attachment is installed in the countersunk hole, the thickness of the flange is the distance between the magnetic attachment and the car body. Therefore, the flange thickness should not be too thick to avoid weakening the adhesion due to an excessive distance between the magnetic attachment and the car body. Car door latches are typically mounted to the vehicle body via a nut plate, which protrudes from the body. Therefore, a reinforcing edge is incorporated into the inner side of the protective cover, forming an inner cavity where the nut plate rests. The reinforcing edge fits snugly against the body. The connection between the nut plate and the latch protrudes outwards, consequently causing the perimeter of the latch's through-hole to also protrude outwards. When a car door closes or when driving in poor road conditions, the door impacts the door latch cover. Designing the cover's main body in a stepped shape strengthens its structure, while grooves on its outer surface optimize airflow and reduce noise.

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Abstract

The utility model relates to the field of automobile parts more specifically, relate to a car door lock protective sheath, including the protective sheath body, the protective sheath body has the inside and the outside, is set up lock piece on it and goes out the hole, the protective sheath body still is provided with magnetic attraction piece. This car door lock protective sheath sets up magnetic attraction piece on the protective sheath body to attract the protective sheath on the car body, and installation and disassembly are more convenient and fast, after disassembly, will not have the paste on the car body difficultly remove with glue, the inner surface of protective sheath body is provided with counterbore, the opening of counterbore is provided with the flange that extends inwards, the flange forms circular opening, and magnetic attraction piece sets up in the counterbore through circular opening.
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Description

Technical Field

[0001] This utility model relates to the field of automotive parts, and more specifically, to a door lock protective cover. Background Technology

[0002] Door lock covers effectively prevent the latches from rusting due to humid air and rain, extending their lifespan. When the doors are closed, door lock covers reduce direct collisions between metal parts, thus reducing noise. This is especially effective at high speeds or in poor road conditions, maintaining a quiet and comfortable environment inside the car and enhancing the driving experience. Door lock covers also act as a buffer, effectively mitigating vibrations from slamming the doors and preventing damage, while also reducing the sound of closing the doors. Therefore, many types of door lock covers are available on the market. These covers are typically made of silicone and have double-sided adhesive for attaching to the car body. However, when the door lock covers need to be replaced or removed, the adhesive can be difficult to remove from the car body. Utility Model Content

[0003] The present invention aims to overcome at least one defect (deficiency) of the prior art and provide a car door lock protective cover to solve the problem that the adhesive of the existing car door lock protective cover will stick to the car body and be difficult to remove after replacement and disassembly.

[0004] The technical solution adopted by this utility model is a car door lock protective cover, including a protective cover body, the protective cover body having an inner side and an outer side, and a lock protrusion hole is opened on it. The feature is that the protective cover body is also provided with a magnetic suction component.

[0005] When using this car door lock protector, the car door lock latch is passed through the lock protrusion hole on the protector body, allowing the protector to cover the latch. This protects the latch from wear and tear and corrosion caused by rainwater exposure over time. It also acts as a shock absorber; when the car door is closed with excessive force, or when the door is scraped or impacted, the protector provides some cushioning to prevent direct metal-to-metal collisions. The magnetic attachment on the protector body facilitates installation and replacement. Traditional car door lock protectors usually have adhesive on the inner surface, which can become difficult to remove due to prolonged use. The magnetic attachment makes installation very convenient, and removal requires only a little force.

[0006] Furthermore, the inner side of the protective cover body is provided with multiple countersunk holes, which are located on both sides of the locking component protrusion hole, and the magnetic component is disposed in the countersunk holes.

[0007] This car door lock protector uses countersunk holes on the cover itself to house the magnetic connector, making installation simple. Compared to through holes, countersunk holes prevent rainwater from entering and affecting the magnetic connector's adhesion. Positioning the countersunk holes on either side of the lock connector's through hole ensures a more secure connection between the door lock protector and the car body.

[0008] Furthermore, the countersunk hole is circular, and its opening is provided with an inwardly extending convex circle to form a circular opening; the magnetic attractor is a cylinder, and its diameter is smaller than the diameter of the circular opening.

[0009] The convex circle can confine the magnetic component within the countersunk hole, preventing it from falling off. Therefore, the circular opening formed by the convex circle should be smaller than the diameter of the magnetic component.

[0010] Furthermore, the ratio of the diameter of the circular opening to the diameter of the magnetic element is 0.5 to 0.8:1.

[0011] The protective case is made of silicone, which is highly elastic and soft. The magnetic clip is placed at the circular opening, and simply pressing it will install it into the recessed hole. However, if the diameter of the circular opening is too small, the magnetic clip cannot pass through. Conversely, if the circular opening is too large, it will not effectively restrain the magnetic clip, making it prone to detaching.

[0012] Furthermore, the thickness of the flange is 0.5 to 1.5 mm.

[0013] The thinner the flange, the shorter the distance between the magnetic component and the vehicle body, resulting in a stronger adhesion. If the flange is too thick, the magnetic force will weaken, and the adhesion will be weak. Conversely, if the flange is too thin, its strength will be too low to effectively restrain the magnetic component.

[0014] Furthermore, the locking hole is located in the middle of the protective sleeve body, and its periphery protrudes outward.

[0015] Normally, the door latch is installed on the vehicle body via a nut plate. At the connection between the nut plate and the latch, the nut plate protrudes outward, and the protective sleeve body around the latch hole is designed to protrude outward, so that the protective sleeve body can fit more tightly during installation.

[0016] Furthermore, the lock protrusion hole includes a central slit between two circular holes at both ends, the width of which does not exceed the diameter of the circular holes.

[0017] The basic structure of a car door latch includes a nut plate and a latching ring. The latching ring is typically an inverted U-shape, with two connecting arms fixed to the nut plate and a top arm fixed between the two connecting arms. The latching ring's through-hole is mainly for the latching ring to pass through. Since the protective sleeve body is usually made of flexible material, the width of the center slit does not need to be the same as the diameter of the car door latch to allow it to pass through. Making it narrower allows it to cover a larger area of ​​the nut plate. The two ends of the latching ring's through-hole need to avoid the connecting arms of the latching ring, so they are designed as round holes, and the diameter of the round hole should be slightly larger than the diameter of the connecting arms of the latching ring.

[0018] Furthermore, a reinforcing edge is provided on the inner side of the protective cover body, and the reinforcing edge and the inner side form an inner cavity.

[0019] Door lock latches are typically mounted on the vehicle body via a nut plate, which protrudes from the body. When a door lock cover is used, the inner cavity accommodates the nut plate, while the reinforcing edge fits snugly against the vehicle body.

[0020] Furthermore, the protective sleeve body is stepped and gradually tapers from the inner surface to the outer surface.

[0021] When a car door closes, it will exert an impact force on the door lock protective cover. By making the protective cover body into a stepped shape, the structural strength of the protective cover body can be enhanced, making it more durable.

[0022] Furthermore, the outer surface of the protective sleeve body is provided with a groove.

[0023] When the car door is closed, or when driving on rough roads, the door will press against the door lock cover. Grooves on the outer surface can optimize airflow and reduce noise.

[0024] Compared with existing technologies, the advantages of this utility model are as follows: This car door lock protective cover uses a magnetic attachment on its body to attach it to the car body, making installation and removal more convenient and quick. After removal, there is no adhesive residue that is difficult to remove from the car body. The protective cover body is made of silicone material, which has high elasticity and wear resistance, effectively resisting friction. It is also soft, easy to install, and has good anti-aging properties. The inner surface of the protective cover body has countersunk holes with flanges at the openings, forming circular openings. The magnetic attachment can be installed in the countersunk holes by pressing it down. The flange prevents the magnetic attachment from falling off. Compared with through holes, countersunk holes prevent rainwater from entering and affecting the magnetic attachment's adhesion, while also being more aesthetically pleasing and preventing the accumulation of dust and rainwater. After the magnetic attachment is installed in the countersunk hole, the thickness of the flange is the distance between the magnetic attachment and the car body. Therefore, the flange thickness should not be too thick to avoid weakening the adhesion due to an excessive distance between the magnetic attachment and the car body. Car door latches are typically mounted to the vehicle body via a nut plate, which protrudes from the body. Therefore, a reinforcing edge is incorporated into the inner side of the protective cover, forming an inner cavity where the nut plate rests. The reinforcing edge fits snugly against the body. The connection between the nut plate and the latch protrudes outwards, consequently causing the perimeter of the latch's through-hole to also protrude outwards. When a car door closes or when driving in poor road conditions, the door impacts the door latch cover. Designing the cover's main body in a stepped shape strengthens its structure, while grooves on its outer surface optimize airflow and reduce noise. Attached Figure Description

[0025] Figure 1 This is a structural diagram of the present invention.

[0026] Figure 2 This is a structural diagram of the outer side of the present invention.

[0027] Figure 3 This is a front view of the present invention.

[0028] Figure 4 This is the left view of the present invention.

[0029] Figure 5 This is a cross-sectional view of the protective sleeve body.

[0030] Figure 6 This is an enlarged view of A.

[0031] Figure 7 This is a schematic diagram of a magnetic connector installed inside a countersunk hole. Detailed Implementation

[0032] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this invention. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0033] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] like Figures 1 to 3 As shown, a car door lock protective cover includes a protective cover body 1 and a magnetic component 2. The protective cover body 1 is made of silicone material and is roughly elliptical in shape. It has an inner side and an outer side. A lock protrusion hole 3 is provided in the middle of the protective cover body 1. The periphery of the lock protrusion hole 3 protrudes outward. The lock protrusion hole 3 includes round holes 31 at both ends and a central slit 32 between the two round holes 31. The width d of the central slit 32 is less than or equal to the diameter d1 of the round holes 31 at both ends.

[0035] like Figure 2 , Figure 4 As shown, the protective cover body 1 is stepped, gradually tapering from the inner side to the outer side. This stepped design enhances the structural strength of the protective cover body 1. A groove 5 is also provided on the outer side of the protective cover body 1. When the car door is closed, or when driving in poor road conditions, the door will compress the door lock protective cover. The groove 5 on the outer side of the protective cover body 1 helps optimize airflow and reduce noise.

[0036] like Figures 5 to 7As shown, the inner surface of the protective case body 1 is provided with a reinforcing edge 11, which has a certain width. The reinforcing edge 11 and the inner surface of the protective case body 1 together form an inner cavity 12. Two countersunk holes 4 are provided on the reinforcing edge 11. The countersunk holes 4 are circular and are respectively located on both sides of the lock protrusion hole 3. An inwardly extending flange 41 is provided at the opening of the countersunk hole 4, forming a circular opening 42. The thickness B of the flange is preferably 0.5–1.5 mm. The magnetic suction member 2 is a cylinder, and the ratio of its diameter D to the diameter D1 of the circular opening 42 formed by the flange 41 is 1:0.5–0.8. The magnetic suction member 2 is disposed within the countersunk hole 4. Since the protective case body 1 is made of silicone material, which is soft, the magnetic suction member 2 can be installed within the countersunk hole 4 with only slight pressure.

[0037] like Figure 4 As shown, in order to make the door lock protective cover fit the car body better, the inner side of the protective cover body 1 is set to be slightly arc-shaped, and its curvature can be set according to the specific car model.

[0038] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the technical solution of this utility model, and are not intended to limit the specific implementation of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A car door lock protective cover, comprising a protective cover body having an inner side and an outer side, wherein a lock protrusion hole is provided thereon, characterized in that, The protective case also has magnetic attachments. The locking hole is located in the middle of the protective sleeve body, and its periphery protrudes outward. The protective sleeve body is stepped and gradually tapers from the inner surface to the outer surface.

2. The car door lock protective cover according to claim 1, characterized in that, The inner side of the protective cover body has multiple countersunk holes, which are located on both sides of the locking hole, and the magnetic attraction is set in the countersunk holes.

3. A car door lock protective cover according to claim 2, characterized in that, The countersunk hole is circular, with an inwardly extending flange at its opening to form a circular opening; the magnetic attractor is a cylinder with a diameter larger than the diameter of the circular opening.

4. A car door lock protective cover according to claim 3, characterized in that, The ratio of the diameter of the circular opening to the diameter of the magnetic element is 0.5~0.8:

1.

5. A car door lock protective cover according to claim 3, characterized in that, The thickness of the flange is 0.5~1.5mm.

6. A car door lock protective cover according to claim 1, characterized in that, The lock protrusion hole includes a central slit between two circular holes at both ends, the width of which does not exceed the diameter of the circular holes.

7. A car door lock protective cover according to claim 1, characterized in that, The inner side of the protective cover body is provided with a reinforcing edge, and the reinforcing edge and the inner side form an inner cavity.

8. A car door lock protective cover according to claim 1, characterized in that, The outer surface of the protective sleeve body is provided with a groove.