Lock cylinder cover mounting structure and intelligent door lock

The magnetic and rod structure design of the lock plate assembly and lock cover assembly enables quick disassembly of the lock cylinder cover, solving the problem of difficult maintenance of existing lock cylinder covers, improving customer experience and reducing maintenance costs.

CN224134400UActive Publication Date: 2026-04-17SHENZHEN FENDA SMART HOME CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN FENDA SMART HOME CO LTD
Filing Date
2025-03-27
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

The existing lock cylinder cover is slidably installed on the door lock panel. After a long period of use, it is prone to appearance defects, requiring professional on-site service and repair, which is time-consuming and costly.

Method used

A lock cylinder cover installation structure was designed. By combining the lock plate assembly and the lock cover assembly, and utilizing the magnetic attraction and rod structure, the lock cylinder cover can be easily disassembled and installed. The rod passes through the strip hole and the recessed groove, then tilts up and exits, achieving quick disassembly.

Benefits of technology

The lock cylinder cover is easy to install and remove, saves costs, provides a good customer experience, and eliminates the need for professional on-site service, reducing disassembly time and costs.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224134400U_ABST
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Abstract

The lock cylinder cover mounting structure comprises a lock cylinder, a lock plate assembly and a lock cover assembly, the lock plate assembly is provided with a containing space, a concave groove and a limiting hole, the limiting hole comprises a through hole and a strip-shaped hole communicated with the through hole, the concave groove is located in the face, away from a door plate, of the lock plate assembly, and the strip-shaped hole is communicated with the through hole. One ends of the through hole and the strip-shaped hole are communicated with the accommodating space, and the other ends are communicated with the sunken groove; the lock cylinder is mounted on the lock plate assembly; the lock cover assembly comprises a lock cylinder cover and a pull belt, the pull belt comprises a rod body and a rod head arranged on the rod body in a protruding mode, the lock cylinder cover is magnetically attracted to the lock plate assembly, one end of the lock cylinder cover covers the lock cylinder, the other end of the lock cylinder cover corresponds to the sunken groove, the rod head is located in the containing space, and the rod body sequentially penetrates through the strip-shaped hole and the sunken groove and then is connected with the lock cylinder cover. The lock cylinder cover corresponding to the concave groove is pressed, the lock cylinder cover tilts up, the lock cylinder cover is held and moves towards one side of the through hole in the length direction of the strip-shaped hole, and the pull belt middle rod head can sequentially retreat from the through hole and the concave groove.
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Description

Technical Field

[0001] This utility model relates to the field of door lock structure technology, and in particular to a lock cylinder cover mounting structure and a smart door lock. Background Technology

[0002] In the use of smart door locks, electronic unlocking methods (fingerprint, password, remote control, etc.) are the main unlocking methods. Therefore, the mechanical key is only used to open the mechanical lock cylinder when the electronic method fails. As a result, the mechanical lock cylinder is used very infrequently. In order to protect the mechanical lock cylinder and make the door lock look more aesthetically pleasing, a lock cylinder cover is needed to cover the lock cylinder.

[0003] Existing lock cylinder covers are generally slidably installed on the door lock panel. Pushing down the lock cylinder cover opens it, and releasing the hand causes the lock cylinder cover to automatically return to its original position under the action of the internal spring. However, after prolonged use, these lock cylinder covers are prone to developing poor appearance and need to be replaced. This requires professional on-site service and repair, and special tools are needed for disassembly. Moreover, the disassembly process is time-consuming and costly. Utility Model Content

[0004] The purpose of this utility model is to provide a lock cylinder cover installation structure and a smart door lock, in order to solve the technical problems of existing lock cylinder covers that are generally slidably installed on the door lock panel, can be opened by pushing down the lock cylinder cover, and can automatically return to cover the lock cylinder under the action of the internal spring of the door lock when the hand is released. After a long period of use, such lock cylinder covers are prone to appearance defects and need to be replaced. They require professional on-site service for repair, can be disassembled with special tools, and are time-consuming and costly to disassemble.

[0005] This utility model provides a lock cylinder cover mounting structure, including:

[0006] Lock cylinder;

[0007] A lock plate assembly for mounting on a door panel, the lock plate assembly having a receiving space, a recessed groove, and a limiting hole, the limiting hole including a through hole and a strip hole communicating with the through hole, the recessed groove being located on the side of the lock plate assembly away from the door panel, one end of the through hole and the strip hole communicating with the receiving space and the other end communicating with the recessed groove, the lock cylinder being mounted on the lock plate assembly;

[0008] A lock cover assembly includes a lock cylinder cover and a pull strap. The pull strap includes a rod body and a rod head protruding from the rod body. The outer diameter of the rod head is larger than the outer diameter of the rod body. The lock cylinder cover is magnetically attached to the lock plate assembly. One end of the lock cylinder cover covers the lock cylinder, and the other end is correspondingly positioned with respect to the recessed groove. The rod head is located within the receiving space. The rod body passes through the strip hole and the recessed groove in sequence and then connects to the lock cylinder cover. When disassembly is required, pressing the lock cylinder cover corresponding to the recessed groove causes the lock cylinder cover to lift up. Holding the lock cylinder cover and moving it along the length of the strip hole towards the side closer to the through hole allows the rod head in the pull strap to sequentially exit the through hole and the recessed groove.

[0009] Furthermore, the lock plate assembly also has a recessed cavity, the recessed groove is provided on the bottom wall of one side of the recessed cavity, and the lock cylinder cover is located inside the recessed cavity.

[0010] Furthermore, the lock plate assembly is also provided with an embedding hole, which extends through the bottom wall of the recessed cavity into the lock plate assembly. The embedding hole is spaced apart from the recessed groove, and the lock cylinder is installed on the embedding hole.

[0011] Furthermore, the lock plate assembly includes a middle frame for connecting to the door panel and a panel for connecting to the middle frame. The panel has a through hole, and the receiving space, the limiting hole and the recessed groove are all provided on the middle frame. The inner wall of the through hole and the panel enclose the cavity to form the recessed cavity.

[0012] Furthermore, both the through hole and the lock cylinder cover are oblong structures.

[0013] Furthermore, the middle frame includes a support plate and a frame for connecting with the door panel. The support plate is installed on the frame and surrounds the frame to form the receiving space. The limiting hole and the recessed groove are both provided on the support plate. The panel is connected to the support plate. The inner wall of the through hole and the support plate surround the cavity.

[0014] Furthermore, the locking plate assembly also includes at least one first magnetic element, which is mounted on the middle frame and / or the panel;

[0015] The lock cylinder cover includes a cover body and at least one second magnetic element. The second magnetic element and the pull strap are both connected to the cover body. The second magnetic element is attracted to the first magnetic element. One end of the cover body covers the lock cylinder, and the other end is correspondingly set with the recessed groove.

[0016] Furthermore, the lock cylinder cover is provided with a clearance groove for avoiding the lock cylinder.

[0017] Furthermore, the pull strap is a belt made of rubber.

[0018] This utility model also provides an intelligent door lock, including the lock cylinder cover mounting structure as described above.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] When the lock cover assembly of this utility model needs to be disassembled, press the lock cylinder cover at the corresponding end of the recessed groove to make the lock cylinder cover lift up. Hold the lock cylinder cover and move it along the length of the strip hole towards the through hole. When the rod is in the through hole, move the lock cylinder cover outward. Pull the rod head in the middle to exit the through hole and the recessed groove in sequence, thereby separating the lock cover assembly from the lock plate assembly. The lock cover assembly is easy to disassemble and interchange, and no professional personnel are required to disassemble and assemble it. The lock cylinder cover opens and closes stably, saving lock costs while providing customers with a good experience. It is suitable for widespread promotion. Attached Figure Description

[0021] Figure 1 A partial structural schematic diagram of the lock cylinder cover mounting structure provided in this embodiment of the utility model;

[0022] Figure 2 An exploded view of the lock cylinder cover mounting structure provided in an embodiment of this utility model;

[0023] Figure 3 A cross-sectional view of the lock cylinder cover mounting structure provided in an embodiment of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the locking cover assembly provided in an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the locking plate assembly provided in an embodiment of the present utility model;

[0026] Figure 6 Explosion of the locking plate assembly provided in the embodiments of this utility model Figure 1 ;

[0027] Figure 7 Explosion of the locking plate assembly provided in the embodiments of this utility model Figure 2 .

[0028] In the picture:

[0029] 10. Lock plate assembly; 11. Accommodating space; 12. Recessed groove; 13. Limiting hole; 131. Through hole; 132. Strip hole; 14. Cavity; 15. Embedded hole; 16. Middle frame; 161. Support plate; 1611. First hole section; 162. Frame body; 1621. Second hole section; 17. Panel; 171. Through hole; 20. Lock cover assembly; 21. Lock cylinder cover; 211. Clearance groove; 212. Notch groove; 22. Pull strap; 221. Rod body; 222. Rod head. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0031] Please see Figures 1 to 7 As shown in the figure, this utility model embodiment discloses a lock cylinder cover mounting structure, which is applied in a smart door lock. The lock cylinder cover mounting structure includes a lock cylinder, a lock plate assembly 10, and a lock cover assembly 20. The lock plate assembly 10 is used to install on the door panel on the outdoor side. The lock plate assembly 10 is provided with a receiving space 11, a recessed groove 12, and a limiting hole 13. The receiving space 11 is located inside the lock plate assembly 10. The limiting hole 13 includes a through hole 131 and a strip hole 132 communicating with the through hole 131. The recessed groove 12 is located on the side of the lock plate assembly 10 away from the door panel. One end of the through hole 131 and the strip hole 132 are both connected to the receiving space 11, and the other end are both connected to the recessed groove 12. The lock cylinder is installed on the lock plate assembly 10. The through hole 131 has a circular structure, and the inner diameter of the through hole 131 is larger than the inner diameter of the strip hole 132. The through hole 131 is located between the strip hole 132 and the lock cylinder. The strip hole 132 is located on the side closer to the ground.

[0032] Lock cover assembly 20 includes lock cylinder cover 21 and pull strap 22. Pull strap 22 includes rod body 221 and rod head 222 protruding from rod body 221. The outer diameter of rod head 222 is larger than the outer diameter of rod body 221. Lock cylinder cover 21 is magnetically attached to lock plate assembly 10. One end of lock cylinder cover 21 covers the lock cylinder, and the other end is correspondingly set with recessed groove 12. Rod head 222 is located in receiving space 11. Rod body 221 passes through slotted hole 132 and recessed groove 12 in sequence and is connected to lock cylinder cover 21. Rod body 221 can move relative to slotted hole 132. Slide it up and down. When disassembly is required, press the lock cylinder cover 21 at the end corresponding to the recessed groove 12. The lock cylinder cover 21 will lift up. Hold the lock cylinder cover 21 and move it along the length of the strip hole 132 towards the side closer to the through hole 131. Then pull the lock cover assembly 20 outward. The rod head 222 in the pull strap 22 can sequentially exit the through hole 131 and the recessed groove 12, thereby separating the lock cylinder cover 21 from the lock plate assembly 10. The disassembly time is short and the disassembly cost is low. While saving on lock costs, it can bring a good experience to customers.

[0033] In some embodiments, the pull strap 22 is a belt made of rubber. Specifically, the material of the pull strap 22 can be TPU85, which is a type of rubber. It has properties such as elasticity, wear resistance, tear resistance and hydrolysis resistance, so that the lock cylinder cover 21 can still be held by the pull strap 22 after it is opened, and there is no risk of it falling off or breaking.

[0034] The lock plate assembly 10 is also provided with a cavity 14, and a recessed groove 12 is provided on the bottom wall of one side of the cavity 14. The lock cylinder is also provided on the bottom wall of the recessed groove 12. When the lock cover assembly 20 is installed on the lock plate assembly 10, the lock cylinder cover 21 is located in the cavity 14 so as to cover the recessed groove 12 and the lock cylinder.

[0035] The lock plate assembly 10 is also provided with an embedding hole 15, which extends through the bottom wall of the recessed cavity 14 into the lock plate assembly 10. The embedding hole 15 is spaced apart from the recessed groove 12. The embedding hole 15 is located in the middle of the bottom wall of the recessed cavity 14, and the lock cylinder is installed on the embedding hole 15.

[0036] In this embodiment, the lock plate assembly 10 includes a middle frame 16 for connecting to the door panel and a panel 17 connected to the middle frame 16. The panel 17 faces the operator and has a through hole 171. The receiving space 11, the limiting hole 13, the recessed groove 12 and the embedding hole 15 are all provided on the middle frame 16. The inner wall of the through hole 171 and the panel 17 enclose the cavity 14. The middle frame 16 may also have a recess corresponding to the through hole 171. These recesses are very shallow and can be ignored.

[0037] In some embodiments, both the through hole 171 and the lock cylinder cover 21 are waist-shaped structures. Of course, both the through hole 171 and the lock cylinder cover 21 can also be elliptical structures, so that the lock cylinder cover 21 can be lifted up when the lock cylinder cover 21 on the corresponding side of the recessed groove 12 is pressed.

[0038] The middle frame 16 includes a support plate 161 and a frame 162 for connecting with the door panel. The support plate 161 is installed on the frame 162 by multiple screws and surrounds the frame 162 to form the receiving space 11. The limiting hole 13 and the recessed groove 12 are both provided on the support plate 161. The panel 17 is snapped to the support plate 161. The inner wall of the through hole 171 and the support plate 161 surround the cavity 14.

[0039] In some embodiments, the support plate 161 is further provided with a first hole segment 1611, and the frame 162 is provided with a second hole segment 1621. The first hole segment 1611 and the second hole segment 1621 are connected, and the first hole segment 1611 and the second hole segment 1621 surround to form the embedded hole 15.

[0040] In this embodiment, the locking plate assembly 10 further includes at least one first magnetic element. The first magnetic element can be installed on the middle frame 16, or the first magnetic element can be installed on the panel 17, or the first magnetic element can be installed on both the middle frame 16 and the panel 17.

[0041] The lock cylinder cover 21 includes a cover body and at least one second magnetic element. The second magnetic element and the pull strap 22 are both connected to the cover body. The second magnetic element can be located inside the cover body. The second magnetic element attracts the first magnetic element. The lock cylinder cover 21 is attracted to the lock plate assembly 10 by the magnetic attraction between the first magnetic element and the second magnetic element. One end of the cover body covers the lock cylinder, and the other end is correspondingly set with the recessed groove 12.

[0042] When the first magnetic component is a magnet, the second magnetic component can be an iron sheet or a magnet that is attracted to the first magnetic component. When the first magnetic component is an iron sheet, the second magnetic component can be a magnet. The number of first magnetic components in the lock plate assembly 10 can be greater than the number of second magnetic components in the lock cover assembly 20, so that the lock cover assembly 20 can be stably attached to the lock plate assembly 10.

[0043] In some embodiments, the lock cylinder cover 21 is provided with a relief groove 211 for avoiding the lock cylinder, so as to prevent the lock cylinder from touching the lock cylinder cover 21 during use and affecting the appearance of the lock cylinder cover 21.

[0044] In some embodiments, the lock cylinder cover 21 is further provided with a notch 212. The notch 212 is located on the side of the lock cylinder cover 21 facing the middle frame 16, and the notch 212 is located at the end of the clearance groove 211 away from the pull strap 22. The notch 212 can reduce the contact area between the lock cylinder cover 21 and the lock plate assembly 10, and a small force can be applied to make the lock cylinder cover 21 lift up.

[0045] This utility model also discloses an intelligent door lock, including the lock cylinder cover mounting structure as described above.

[0046] The assembly and disassembly principle of the lock cylinder cover mounting structure:

[0047] When the lock cover assembly 20 needs to be disassembled, firstly, press the lock cylinder cover 21 at the corresponding end of the recessed groove 12 to make the lock cylinder cover 21 pry up. Then, remove the lock cylinder cover 21 from the recessed cavity 14 by hand. Next, move the lock cylinder cover 21 along the length of the strip hole 132 toward the through hole 131 using the rod 221 on it. Finally, when the rod 221 is in the through hole 131, move the lock cylinder cover 21 outward. The rod head 222 in the pull strap 22 can exit the through hole 131 and the recessed groove 12 in sequence, thereby separating the lock cover assembly 20 from the lock plate assembly 10.

[0048] When the lock cover assembly 20 needs to be installed, hold the lock cover assembly 20 with your hand, align the rod head 222 of the lock cover assembly 20 with the through hole 131, and then pass the rod head 222 of the pull strap 22 through the recessed groove 12 and the through hole 131 in sequence and place it in the receiving space 11. After that, the pull strap 22 moves away from the through hole 131 along the length direction of the strip hole 132 by relying on its upper rod body 221. Finally, place the lock cylinder cover 21 in the recessed cavity 14 so that the lock cylinder cover 21 is attached to the lock plate assembly 10, and the assembly is completed.

[0049] In summary, when the lock cover assembly 20 of this utility model needs to be disassembled, press the lock cylinder cover 21 at the corresponding end of the recessed groove 12 to make the lock cylinder cover 21 lift up. Hold the lock cylinder cover 21 and move it along the length of the strip hole 132 towards the side closer to the through hole 131. When the rod 221 is in the through hole 131, move the lock cylinder cover 21 outward. The rod head 222 in the pull strap 22 can sequentially exit the through hole 131 and the recessed groove 12, thereby separating the lock cover assembly 20 from the lock plate assembly 10. The lock cover assembly 20 is easy to disassemble and interchange, and does not require professional personnel to come to the site for disassembly and assembly. The lock cylinder cover 21 opens and closes stably, saving lock costs while providing customers with a good experience. It is suitable for widespread promotion.

[0050] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A lock cylinder cover mounting structure characterized by comprising: include: Lock cylinder; A lock plate assembly for mounting on a door panel, the lock plate assembly having a receiving space, a recessed groove, and a limiting hole, the limiting hole including a through hole and a strip hole communicating with the through hole, the recessed groove being located on the side of the lock plate assembly away from the door panel, one end of the through hole and the strip hole communicating with the receiving space and the other end communicating with the recessed groove, the lock cylinder being mounted on the lock plate assembly; A lock cover assembly includes a lock cylinder cover and a pull strap. The pull strap includes a rod body and a rod head protruding from the rod body. The outer diameter of the rod head is larger than the outer diameter of the rod body. The lock cylinder cover is magnetically attached to the lock plate assembly. One end of the lock cylinder cover covers the lock cylinder, and the other end is correspondingly positioned with respect to the recessed groove. The rod head is located within the receiving space. The rod body passes through the strip hole and the recessed groove in sequence and then connects to the lock cylinder cover. When disassembly is required, pressing the lock cylinder cover corresponding to the recessed groove causes the lock cylinder cover to lift up. Holding the lock cylinder cover and moving it along the length of the strip hole towards the side closer to the through hole allows the rod head in the pull strap to sequentially exit the through hole and the recessed groove.

2. The lock cylinder cover mounting structure according to claim 1, characterized by The lock plate assembly also has a recessed cavity, the recessed groove is provided on the bottom wall of one side of the recessed cavity, and the lock cylinder cover is located in the recessed cavity.

3. The lock cylinder cover mounting structure according to claim 2, characterized by The lock plate assembly is further provided with an embedding hole, which extends through the bottom wall of the recessed cavity into the lock plate assembly. The embedding hole is spaced apart from the recessed groove, and the lock cylinder is installed on the embedding hole.

4. The lock cylinder cover mounting structure according to claim 2, characterized by The lock plate assembly includes a middle frame for connecting to the door panel and a panel for connecting to the middle frame. The panel has a through hole. The receiving space, the limiting hole and the recessed groove are all provided on the middle frame. The inner wall of the through hole and the panel enclose the cavity.

5. The lock cylinder cover mounting structure according to claim 4, characterized by Both the through hole and the lock cylinder cover are oblong in shape.

6. The lock cylinder cover mounting structure according to claim 4, characterized by The middle frame includes a support plate and a frame for connecting with the door panel. The support plate is installed on the frame and surrounds the frame to form the receiving space. The limiting hole and the recessed groove are both provided on the support plate. The panel is connected to the support plate. The inner wall of the through hole and the support plate surround to form the cavity.

7. The lock cylinder cover mounting structure according to claim 4, characterized in that, The locking plate assembly further includes at least one first magnetic element, which is mounted on the middle frame and / or the panel; The lock cylinder cover includes a cover body and at least one second magnetic element. The second magnetic element and the pull strap are both connected to the cover body. The second magnetic element is attracted to the first magnetic element. One end of the cover body covers the lock cylinder, and the other end is correspondingly set with the recessed groove.

8. The lock cylinder cover mounting structure according to claim 1, characterized by The lock cylinder cover is provided with a clearance groove for avoiding the lock cylinder.

9. The lock cylinder cover mounting structure according to claim 1, characterized by The traction belt is made of rubber.

10. An intelligent door lock, characterized by Includes the lock cylinder cover mounting structure as described in any one of claims 1-9.