External auxiliary lock capable of freely reversing
By designing a freely reversible external auxiliary lock, the electric drive opening and closing modules of the rear lock can provide a variety of installation methods, solving the problem that traditional locks need to be produced in the direction of the door opening and reducing production and sales costs.
Patent Information
- Application Number
- CN202510076347.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2025-07-08
AI Technical Summary
Traditional exterior auxiliary locks require the production and reserve of different versions of products according to the door opening direction, resulting in increased production and sales costs.
A freely reversible external auxiliary lock is designed. The electric drive opening and closing module of the rear lock can be provided vertically or horizontally installed to meet the needs of different door opening directions.
The installation method of the same product adapts to multiple door opening directions is realized, reducing the cost of production and sales.
Smart Images

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Abstract
Description
[0001] The present invention relates to an externally mounted auxiliary door lock, specifically an externally mounted auxiliary lock that can be freely reversed. Background Art
[0002] The main body of a traditional externally mounted auxiliary lock is installed on the outer edge of the door. Due to the limitation of the door opening direction, which can be left-opening or right-opening, it is necessary to select a product with the corresponding opening direction according to the door opening direction before installation and use. For this reason, manufacturers or enterprises producing this type of door lock product need to produce left-opening or right-opening products as required or reserve materials for left-opening or right-opening corresponding products. Similarly, a large number of sales distributors in the market also need to reserve corresponding left-opening or right-opening products to meet the needs of the majority of users, which not only increases the comprehensive production cost of manufacturers or enterprises but also increases the operating cost of a large number of sales distributors. Summary of the Invention
[0003] Based on the above problem discussion, the present invention discloses an externally mounted auxiliary lock that can be freely reversed. Its feature is that the electric drive lock-opening and lock-closing module of the rear lock can provide various flexible installation methods such as vertical installation or horizontal installation, including left-opening or right-opening, etc. This solves the problem that manufacturers or enterprises only need to produce the same product to meet the requirements of various door opening directions or installation methods. Brief Description of the Drawings
[0004] Att Figure 1 : Front view of the front lock and rear lock of the present invention; Att Figure 2 : Exploded view of the rear lock structure of the present invention; Att Figure 3 : Schematic diagram of the rear lock base assembly structure of the present invention; Att Figure 4 : Front view and rear view of the electric drive lock-opening and lock-closing module of the present invention: Att Figure 5 : Installation effect diagrams of the rear lock in two left and right opening directions vertically of the present invention: Att Figure 6 : Installation effect diagrams of the rear lock in two left and right opening directions horizontally of the present invention: Detailed Description of the Invention
[0005] The present invention consists of two main components: a front lock 1 and a rear lock 2. The front lock 1 is an electronic lock with biometric recognition function. The movement of the locking tongue of the rear lock in and out is driven by electricity. Its main body is respectively composed of a base assembly 2-1, a battery compartment and a battery 2-2, an electric drive lock-opening and lock-closing module 2-3, and a panel cover 2-4. Among them, the base assembly 2-1 is provided with a locking stud 2-1-1 for the panel cover 2-4, a battery compartment sink 2-1-2 with a threaded hole, a locking stud 2-1-3 for the electric drive lock-opening and lock-closing module, and a power socket 2-1-4. The electric drive lock-opening and lock-closing module 2-3 is provided with a locking tongue 2-3-1 on one side, a knob 2-3-2 with a physical button for one-key lock-opening and lock-closing in the middle on the front, screw holes 2-3-3 at four corners, and power sockets 2-3-4 for installation and connection in three directions of left, right, and bottom on the back.
[0006] Assembly process of the rear lock 2: First, install the battery compartment 2-2 into the sink 2-1-2 with a threaded hole and fix it with two screws; install the power socket 2-1-4 and fix it with screws on both sides; then install the electric drive lock-opening and lock-closing module and tighten and fix it with two screws into the stud 2-1-3; finally, cover the panel cover 2-4 and tighten and fix it with three screws into the stud 2-1-1. (Note: The two symmetric studs below the stud 2-1-1 of the panel cover 2-4 are shared with the installation of the electric drive lock-opening and lock-closing module).
[0007] Installation method of the present invention: First, fix the front lock 1 and the base assembly 2-1 with the battery compartment 2-2 already installed on the door with a pull screw. Then, install the electric drive lock-opening and lock-closing module 2-3 into the base assembly 2-1 according to the door opening direction, and tighten and fix it with two screws passing through the screw holes 2-3-3 and into the stud 2-1-3. Finally, install the panel cover 2-4, and tighten and fix it with screws passing through the three screw holes of the panel cover 2-4 and into the corresponding three studs 2-1-1 of the base assembly 2-1 to complete the installation.
Claims
1. The present invention consists of two main components: a front lock 1 and a rear lock 2. The front lock 1 is an electronic lock with biometric recognition function, and the movement of the locking tongue of the rear lock in and out is driven by electricity. Its main body is respectively composed of a base assembly 2-1, a battery compartment and a battery 2-2, an electric drive lock opening and closing module 2-3, and a panel cover 2-4. Among them, the base assembly 2-1 is provided with a locking stud 2-1-1 for the panel cover 2-4, a battery compartment counterbore 2-1-2 with a threaded hole, a locking stud 2-1-3 for the electric drive lock opening and closing module, and a battery socket 2-1-4. The electric drive lock opening and closing module 2-3 is provided with a locking tongue 2-3-1 on one side, a knob 2-3-2 with a physical button for one-key lock opening and closing in the middle on the front, screw holes 2-3-3 at four corners, and power sockets 2-3-4 for installation and connection in three directions of left, right, and bottom on the back.
2. According to the externally mounted auxiliary lock capable of freely reversing as described in claim 1, the rear lock 2 is provided with an electric drive lock opening and closing module 2-3 that can be flexibly installed and used according to the door opening direction.