Installation anti-falling structure and intelligent door lock
By introducing an anti-fall structure into the smart door lock and utilizing the snap-fit design of the anti-reverse retaining ring and the pull stud, the displacement and falling problems of the front lock component during installation are solved, achieving a more efficient and reliable installation process and reducing the risk of damage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN FENDA SMART HOME CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-05-15
AI Technical Summary
During the installation of existing smart door locks, the front locking components are prone to displacement or falling, resulting in low installation efficiency and increased risk of damage.
The lock employs an anti-fall structure, including a lock body, a front lock assembly, and a backstop ring. The backstop ring is fitted onto the outer end of the first pair of pull studs, and the latch abuts against the side of the lock body, locking the first pair of pull studs to stabilize the front lock assembly on the door panel.
It effectively prevents the front locking component from shifting and falling, improves installation efficiency, reduces the risk of damage, and is simple to operate and has a low cost.
Smart Images

Figure CN224244602U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of smart door lock technology, and in particular relates to an anti-fall installation structure and a smart door lock. Background Technology
[0002] Smart locks are improved versions of traditional mechanical locks, offering greater intelligence and convenience in terms of user security, identification, and management. As the locking mechanism in an access control system, smart locks are composite locks that combine security, convenience, and advanced technology. With the development of IoT technology, smart locks are gradually replacing traditional mechanical locks, becoming the mainstream choice for users.
[0003] Smart door locks typically consist of a front locking assembly, a lock cylinder assembly, and a rear locking assembly. When installing the front locking assembly onto the door panel, the lack of a pre-designed structure to secure it to the door makes it prone to displacement and falling due to its own weight. Furthermore, since the front and rear locking assemblies are usually fixed to the door using studs and screws, the front locking assembly experiences a pushing force from the screws when the rear locking assembly is tightened, causing it to shift or fall. Therefore, existing smart door locks suffer from the problem of the front locking assembly easily shifting or falling during installation, resulting in inefficient installation and potential damage to the lock.
[0004] Therefore, this utility model addresses the aforementioned technical problems by providing an anti-fall structure for use in smart door locks. During installation, the front lock assembly can be fixed using a locking ring and a pull stud, thereby preventing displacement or falling of the front lock assembly, thus improving the installation efficiency of the door lock and reducing the risk of damage from falling. Utility Model Content
[0005] To address the aforementioned problems in the existing technology, this utility model provides an installation anti-fall structure, comprising:
[0006] A lock body, which is securely mounted on the door panel, and the lock body is provided with a first mounting hole;
[0007] A front locking assembly, wherein a first pair of pull studs is provided on one side of the front locking assembly, the first pair of pull studs are installed through the first mounting hole, and a retaining ring is provided at the outer end of the first pair of pull studs;
[0008] The anti-reverse retaining ring is provided with several retaining tongues. The anti-reverse retaining ring is fitted onto the outer end of the first pull stud. The front end face of the anti-reverse retaining ring abuts against the side of the lock body, and the retaining tongues abut against the retaining protrusion ring.
[0009] The front locking assembly is secured to the door panel by the anti-reverse retaining ring engaging the first pair of tie rods.
[0010] Optionally, the anti-reverse retaining ring has a ring-like structure, the retaining tongue is located at the front end of the anti-reverse retaining ring, the retaining tongue extends inward from the end face of the anti-reverse retaining ring, and the tip of the retaining tongue faces the rear end of the anti-reverse retaining ring and is obliquely pointed to the axis of the anti-reverse retaining ring.
[0011] Optionally, a plurality of the latches are arranged in a ring at the front end of the anti-reverse retaining ring, and the tip of the latch abuts against the retaining ring.
[0012] Optionally, the rear end of the anti-reverse retaining ring is provided with a through groove that penetrates the side of the anti-reverse retaining ring.
[0013] Optionally, a plurality of the locking rings are evenly arranged along the axis of the first pull stud, and a locking groove is formed between the locking rings, with the tip of the locking tongue engaging the locking groove.
[0014] Optionally, one end of the first pull stud is formed with an external thread, and the other end is formed with a slot. One end of the first pull stud is fastened to the front locking assembly by a threaded connection.
[0015] Optionally, one end of the first tie rod is provided with a first threaded hole, which allows the front locking assembly to be fastened to the rear locking assembly by screws.
[0016] Optionally, a second pair of pull studs is provided on one side of the front locking assembly. One end of the second pair of pull studs is formed with an external thread, and the other end is formed with a slot. One end of the second pair of pull studs is fastened to the front locking assembly by a threaded connection.
[0017] Optionally, one end of the second tie rod is provided with a second threaded hole, which allows the front locking assembly to be fastened to the rear locking assembly by screws.
[0018] In addition, this utility model also provides an intelligent door lock that applies the above-mentioned anti-fall structure.
[0019] The technical solution of this utility model has the following advantages or beneficial effects:
[0020] The anti-fall structure provided by this utility model is applied to smart door locks. The anti-fall structure includes a lock body, a front locking assembly, and a locking ring. The lock body is securely mounted on the door panel and has a first mounting hole. A first pair of pull studs is provided on one side of the front locking assembly, passing through the first mounting hole. A retaining ring is provided at the outer end of the first pull stud. The locking ring has several latches and is fitted onto the outer end of the first pull stud. The front face of the locking ring abuts against the side of the lock body, and the latches abut against the retaining ring. The front locking assembly is stabilized on the door panel by the locking ring engaging the first pair of pull studs, effectively solving problems such as displacement and falling of the front locking assembly during installation. This makes the installation of the smart door lock convenient, quick, and reliable, improving installation efficiency and preventing damage from falling. Furthermore, the installation operation is simple and cost-effective. Attached Figure Description
[0021] Embodiments of the present invention will be described more fully with reference to the accompanying drawings. However, the accompanying drawings are for illustration and explanation only and do not constitute a limitation on the scope of the present invention.
[0022] Figure 1 This is a front view schematic diagram of the installation anti-fall structure of this utility model;
[0023] Figure 2 This is a left-side view of the installation anti-fall structure of this utility model;
[0024] Figure 3 This is an exploded structural diagram of the installation anti-fall structure of this utility model;
[0025] Figure 4 This is a schematic diagram of the anti-reverse retaining ring of this utility model;
[0026] Figure 5 This is a schematic diagram of the structure of the first pair of tie rods of this utility model;
[0027] Figure 6 This is a cross-sectional view of the anti-fall structure of this utility model applied to a smart door lock.
[0028] Illustration:
[0029] 1. Lock body; 2. Front lock assembly; 3. Anti-reverse retaining ring; 4. First mounting hole; 5. First pull stud;
[0030] 6. Locking ring; 7. Locking tongue; 8. Door panel; 9. Assembly hole; 10. Rear lock assembly; 11. Locking groove;
[0031] 12. Tongue tip; 13. First threaded hole; 14. Second tie rod; 15. Second threaded hole; 16. Through groove. Detailed Implementation
[0032] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many other different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.
[0033] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0034] In the description of this utility model, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0035] In the description of this utility model, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.
[0036] like Figure 1-6 As shown, this utility model provides an anti-fall installation structure that can be applied to smart door locks. The anti-fall installation structure includes a lock body 1, a front locking assembly 2, and a locking ring 3. The lock body 1 is securely installed on the door panel 8 and has a first mounting hole 4. A first pair of pull studs 5 are provided on one side of the front locking assembly 2. The first pair of pull studs 5 pass through the first mounting hole 4 and are installed. A locking protrusion 6 is provided at the outer end of the first pair of pull studs 5. The locking ring 3 has several locking tongues 7. The locking ring 3 is fitted onto the outer end of the first pair of pull studs 5. The front end face of the locking ring 3 abuts against the side of the lock body 1, and the locking tongues 7 abut against the locking protrusion 6. The front locking assembly 2 is stabilized on the door panel 8 by the locking ring 3 engaging the first pair of pull studs 5, which can effectively solve the problems of displacement and falling of the front locking assembly 2 during installation, making the smart door lock installation convenient, quick, and reliable, improving the installation efficiency of the smart door lock and preventing damage from falling. Moreover, the installation operation is simple and the cost is low.
[0037] Specifically, in this embodiment, the lock body 1 is typically a lock cylinder assembly. The lock body 1 is first fitted onto a predetermined position on the door panel 8 and locked. That is, the door panel 8 in this embodiment has a predetermined mounting hole 9, and the lock body 1 is first fastened to the mounting hole 9 on the door panel 8 by screws. The front lock assembly 2 is typically located on the outside of the door panel 8 and can integrate key unlocking, fingerprint unlocking, or password unlocking functions, etc. The lock body 1 is provided with two first mounting holes 4, which are used for the first pull studs 5 to pass through. By setting the first mounting holes 4 to assemble the first pull studs 5, the structure is simple and the cost is low.
[0038] Furthermore, in this embodiment, a pair of first pull studs 5 extend from the inner side of the front locking assembly 2. The first pull studs 5 are used to adapt to screws for fastening the rear locking assembly 10. Specifically, the first pull studs 5 are cylindrical structures, manufactured using free-machining steel, resulting in low manufacturing costs. The outer surface of the rear end of the first pull studs 5 is provided with several retaining rings 6, which are evenly arranged along the axis of the first pull studs 5. Multiple retaining grooves 11 are formed between the retaining rings 6, which are directly formed during the machining of the retaining grooves 11. The front end of the first pull studs 5 is formed with external threads, and the rear end face is provided with a slot. The front end of the first pull studs 5 is fastened to the front locking assembly 2 via a threaded connection, and the slot on the rear end face allows for screwdriver installation and removal of the first pull studs 5. When installing the front lock assembly 2, the first pair of pull studs 5 are installed through the first mounting hole 4. The side of the front lock assembly 2 is attached to the door panel 8. The anti-reverse retaining ring 3 is inserted into the rear end of the first pair of pull studs 5, and the anti-reverse retaining ring 3 is pressed firmly until the front end of the anti-reverse retaining ring 3 abuts against the side of the lock body 1. At this time, the tip 12 of the latch 7 is engaged in the slot 11, and the latch 7 presses against the locking protrusion 6 to lock the front lock assembly 2. The anti-reverse retaining ring 3 engages the first pair of pull studs 5 and presses against the lock body 1 to restrict the front lock from shifting or falling, so that the front lock assembly 2 can be stably attached to the door panel 8, which is convenient for the subsequent installation of the rear lock assembly 10. It should be noted that the first mounting hole 4 can also be directly set on the door panel 8, which can also achieve the effect of stabilizing the front lock assembly 2. However, considering the compatibility and universality of installing the anti-fall structure, the first mounting hole 4 is set on the lock body 1, which can be controlled by the smart lock manufacturer without consulting the door panel 8 manufacturer.
[0039] Furthermore, in this embodiment, the rear end of the first pair of pull studs 5 is provided with a first threaded hole 13, which allows the front lock assembly 2 to be fastened to the rear lock assembly 10 by screws. When installing the rear lock assembly 10, due to the action of the first pair of pull studs 5 and the anti-reverse retaining ring 3, the front lock assembly 2 is stabilized on the door panel 8 and cannot be displaced. When the screws are screwed into the first threaded hole 13, the alignment is accurate and convenient, improving the installation efficiency of the door lock.
[0040] Furthermore, in this embodiment, a pair of second pull studs 14 extend from the inner side of the front lock assembly 2. The second pull studs 14 are used to adapt to screws for fastening the rear lock assembly 10. The front end of the second pull stud 14 is formed with external threads, and the rear end is provided with a slot. The front end of the second pull stud 14 is fastened to the front lock assembly 2 by threaded connection, and the slot on the rear end face can be used to install and remove the second pull stud 14 with a screwdriver. The rear end of the second pull stud 14 is provided with a second threaded hole 15, which is used for the front lock assembly 2 to be fastened to the rear lock assembly 10 by screws. When installing the front lock assembly 2, the second pull studs 14 are installed through the mounting holes 9 on the door panel 8. When installing the rear lock assembly 10, due to the action of the first pull studs 5 and the anti-reverse retaining ring 3, the front lock assembly 2 is stabilized on the door panel 8 and cannot be displaced. When the screw is screwed into the second threaded hole 15, the alignment is accurate and convenient, improving the installation efficiency of the door lock. It should be noted that in some embodiments, four first mounting holes 4 can also be directly provided on the lock body 1, of which two first mounting holes 4 are adapted to the first pull studs 5 for installation, and the other two first mounting holes 4 are adapted to the second pull studs 14 for installation.
[0041] Furthermore, in this embodiment, the anti-reverse retaining ring 3 has a ring-like structure, and the retaining tongue 7 is located at the front end of the anti-reverse retaining ring 3. The retaining tongue 7 extends inward from the end face of the anti-reverse retaining ring 3, and the tip 12 of the retaining tongue 7 faces the rear end of the anti-reverse retaining ring 3 and is inclined towards the axis of the anti-reverse retaining ring 3. Several retaining tongues 7 are evenly arranged in a ring shape at the front end of the anti-reverse retaining ring 3, and the tip 12 of the retaining tongue 7 abuts against the retaining protrusion ring 6. That is, in this embodiment, multiple retaining tongues 7 form a conical clamping structure, and the size of the inner conical opening should be appropriately fitted into the retaining groove 11. Preferably, the anti-reverse retaining ring 3 can be manufactured using 65Mn material, which allows the retaining tongue 7 to have good expandability. This enables the anti-reverse retaining ring to be smoothly inserted into the first pair of pull studs 5 after expansion, and the rebounding retaining tongue 7 can provide greater clamping force to engage within the retaining groove 11, improving the stability of the anti-fall structure installation and making the anti-fall structure more reliably secure to the front locking assembly 2, preventing stability failure. Preferably, the rear end of the anti-reverse retaining ring 3 is provided with a through groove 16 penetrating the side of the anti-reverse retaining ring 3, which can reduce the material cost of the anti-reverse retaining ring 3 and improve product competitiveness.
[0042] Furthermore, in this embodiment, the anti-reverse retaining ring 3 can be configured as one or two. When two anti-reverse retaining rings 3 are configured, the anti-reverse retaining rings 3 are fitted onto both of the corresponding first tie rods 5, thereby improving the stability and reliability of the anti-fall structure. When only one anti-reverse retaining ring 3 is configured, the anti-reverse retaining ring 3 can be fitted onto either of the first tie rods 5, which can also meet the stability requirements of the anti-fall structure on the front locking assembly 2.
[0043] Furthermore, in some embodiments, the outer surface of the rear end of the first pair of pull studs 5 can also be directly formed as an external thread. In this case, the anti-reverse retaining ring 3 can be set as a nut. The nut is screwed into the external thread on the rear end face of the first pair of pull studs 5 until the nut is tightly attached to the side of the lock body 1, which can also achieve the effect of installing the anti-fall structure to stabilize the front lock assembly 2.
[0044] The anti-fall structure of this utility model involves installing the lock body 1 in the mounting hole 9 on the side of the door, and then screwing the first pair of pull studs 5 and the second pair of pull studs 14 onto the front lock assembly 2 to form a single unit. Next, the first pair of pull studs 5 on the front lock assembly 2 is passed through the first mounting hole 4 of the lock body 1, and the second pair of pull studs 14 is passed through the door panel 8. Finally, the anti-reverse retaining ring 3 is fitted onto the first pair of pull studs 5 and pushed all the way down until it contacts the lock body 1. The retaining tongue 7 on the anti-reverse retaining ring 3 engages with the annular retaining clip on the outer surface of the first pair of pull studs 5, thereby stabilizing the front lock assembly 2. Therefore, it is not necessary to manually or otherwise support or hold the front lock body 1 assembly, and the front lock body 1 assembly will not shift or fall, achieving the purpose of stabilizing the front lock assembly 2 and preventing falls. To remove the front lock body 1 assembly, simply unscrew the first pair of pull studs 5, and the anti-reverse retaining ring 3 can be removed together, thus removing the front lock body 1 assembly. With the anti-reverse retaining ring 3 engaging the first pair of pull studs 5, the thrust during the subsequent installation process of tightening the screws of the rear lock assembly 10 cannot move the front lock body 1 assembly. The screws are accurately aligned, making installation faster and more convenient, thereby improving the assembly efficiency of the door lock.
[0045] This utility model also provides a smart door lock that uses the above-mentioned anti-fall structure. The front locking component 2 of the smart door lock is stabilized on the door panel 8 by locking the first pair of tie rods 5 with the anti-reverse retaining ring 3. This can effectively solve the problems of displacement and falling of the front locking component 2 during installation, making the smart door lock easy, quick and reliable to install, improving the installation efficiency of the smart door lock and preventing the door lock from falling and being damaged; and the installation operation is simple and the cost is low.
[0046] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0047] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. An anti-fall structure is installed, characterized in that, include: A lock body, which is securely mounted on the door panel, and the lock body is provided with a first mounting hole; A front locking assembly, wherein a first pair of pull studs is provided on one side of the front locking assembly, the first pair of pull studs are installed through the first mounting hole, and a retaining ring is provided at the outer end of the first pair of pull studs; The anti-reverse retaining ring is provided with several retaining tongues. The anti-reverse retaining ring is fitted onto the outer end of the first pull stud. The front end face of the anti-reverse retaining ring abuts against the side of the lock body, and the retaining tongues abut against the retaining protrusion ring. The front locking assembly is secured to the door panel by the anti-reverse retaining ring engaging the first pair of tie rods.
2. The anti-fall structure as described in claim 1, characterized in that, The anti-reverse retaining ring has a ring-like structure. The retaining tongue is located at the front end of the anti-reverse retaining ring. The retaining tongue extends inward from the end face of the anti-reverse retaining ring. The tip of the retaining tongue faces the rear end of the anti-reverse retaining ring and is inclined towards the axis of the anti-reverse retaining ring.
3. The anti-fall structure as described in claim 2, characterized in that, Several of the aforementioned latches are evenly arranged in a ring at the front end of the anti-reverse retaining ring, and the tip of each latch abuts against the retaining ring.
4. The anti-fall structure as described in claim 2, characterized in that, The rear end of the anti-reverse retaining ring is provided with a through groove that penetrates the side of the anti-reverse retaining ring.
5. The anti-fall structure as described in claim 2, characterized in that, A plurality of the aforementioned locking rings are evenly arranged along the axis of the first pull stud, and locking grooves are formed between the locking rings, with the tip of the locking tongue engaging the locking groove.
6. The anti-fall structure as described in claim 1, characterized in that, One end of the first pair of pull studs is formed with an external thread, and the other end is formed with a slot. One end of the first pair of pull studs is fastened to the front locking assembly by a threaded connection.
7. The anti-fall structure as described in claim 6, characterized in that, One end of the first tie rod is provided with a first threaded hole, which allows the front locking assembly to be fastened to the rear locking assembly by screws.
8. The anti-fall structure as described in claim 1, characterized in that, A second pair of pull studs is also provided on one side of the front locking assembly. One end of the second pair of pull studs is formed with an external thread, and the other end is formed with a slot. One end of the second pair of pull studs is fastened to the front locking assembly by a threaded connection.
9. The anti-fall structure as described in claim 8, characterized in that, One end of the second tie rod is provided with a second threaded hole, which allows the front locking assembly to be fastened to the rear locking assembly by screws.
10. A smart door lock, characterized in that, Includes the anti-fall structure as described in any one of claims 1-9.