Indoor wooden door mechanical password lock

CN224849711UActive Publication Date: 2026-10-13HENAN MUNIAO HARDWARE ACCESSORIES CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202521548044.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-23
Publication Date
2026-10-13
Estimated Expiration
2035-07-23

AI Technical Summary

Technical Problem

目前市场上的机械密码锁体积较大,同时设计比较常规通常室内门锁需要配有专门钥匙用来锁紧或打开房门,在日常使用中时有钥匙丢失打不开房门的情况发生,导致门锁需要拆装或是其他办法打开,拆装也较为麻烦,美观性差,使用性能较差,为此,我们提出一种室内木门机械密码锁

Benefits of technology

1、本实用新型:通过杠杆机构,实现内外两个把手锁止状态,设置有密码锁,使其安全性更高,而且去除机械钥匙,可避免钥匙丢失,纯机械式密码锁使得锁体的使用寿命与金属寿命基本一致,不存在馈电、各种老化现象,把手上包裹的不锈钢套管可以起到防水、防火、防锈的作用;

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224849711U_ABST
    Figure CN224849711U_ABST
Patent Text Reader

Abstract

The utility model discloses an indoor wooden door mechanical coded lock belongs to the lock technical field. An indoor wooden door mechanical coded lock, including shell and coded lock, the shell one side is provided with coded lock, the coded lock is provided with the lock release button away from the shell one side, the coded lock surface is provided with stainless steel sleeve, the coded lock one side corresponding position surface all are provided with stainless steel sleeve and lock release button, the shell other side all is provided with the base, be provided with the square tube between the base, the utility model discloses in order to solve the mechanical coded lock volume bigger in prior art, the problem of troublesome installation, poor problem of appearance, the mechanical coded lock simple structure, practicality is strong, small and exquisite, and the installation is simple and beautiful.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of lock technology, and in particular to an indoor wooden door mechanical combination lock. Background Technology

[0002] Due to their unique characteristics and performance, pure mechanical combination locks offer significant advantages in daily use: No power required: Mechanical combination locks are ideal for specific scenarios (such as warehouse doors that are opened and closed infrequently, or homes with multiple properties, some of which are not frequently occupied, making frequent power supply or battery replacement difficult (smart locks require power), and in environments where elderly people are unfamiliar with electronic products. Being purely mechanical, they are free from power depletion and aging issues, making them suitable for direct welding to various metal doors. Currently, mechanical combination locks on the market are relatively large and have a conventional design. Typically, interior door locks require a special key to lock or unlock the door. In daily use, there are occasional situations where the key is lost and the door cannot be opened, which means that the door lock needs to be disassembled or opened by other methods. Disassembly and assembly are also quite troublesome, the aesthetics are poor, and the performance is poor. Therefore, we propose an interior wooden door mechanical combination lock. Utility Model Content

[0003] The purpose of this utility model is to solve the problems of large size, troublesome installation and poor aesthetics of existing mechanical combination locks, and to propose an indoor wooden door mechanical combination lock.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An indoor wooden door mechanical combination lock includes a shell and a combination lock. The combination lock is provided on one side of the shell, and an unlocking button is provided on the side of the combination lock away from the shell. The surface of the combination lock is provided with a stainless steel sleeve. The surface of the combination lock at corresponding positions on one side is provided with a stainless steel sleeve and an unlocking button. The other side of the shell is provided with a base, and a square tube is provided between the bases.

[0005] Preferably, the square tube is provided with bearing seats at both ends, a locking pin is provided inside the square tube, a locking chip is provided inside the bearing seat, the locking chip and the locking pin are connected, a locking plate is provided above the locking chip, the locking plate is tightly fitted with the bearing seat, a lever is provided on one side of the locking plate, and a tight shaft is provided on one side of the lever.

[0006] Preferably, the base includes a retaining ring, a disc, and a base plate. A buckle is provided on one side of the retaining ring, and the base plate is connected to the outer shell on one side. The disc is disposed between the retaining ring and the base plate, and the retaining ring is fastened to the base plate through the disc.

[0007] Preferably, a density adjustment wheel is provided on one side of the unlocking button, and a density adjustment slider is provided inside the density adjustment wheel.

[0008] Preferably, a tight shaft sleeve is provided outside the tight shaft, and the outer shell and the unlocking button are respectively connected to the two sides of the tight shaft sleeve.

[0009] Preferably, the combination lock has a square buckle on the side near the outer shell, and the outer shell and the stainless steel sleeve are fastened together by the square buckle.

[0010] Compared with the prior art, this utility model provides an indoor wooden door mechanical combination lock, which has the following beneficial effects: 1. This utility model: Through the lever mechanism, the inner and outer handles are locked. It is equipped with a combination lock, which makes it more secure. Moreover, the mechanical key is eliminated, which can prevent the key from being lost. The pure mechanical combination lock makes the service life of the lock body basically the same as that of metal. There is no power failure or various aging phenomena. The stainless steel sleeve wrapped on the handle can play a role in waterproofing, fireproofing and rust prevention. 2. This device not only facilitates operation but also enhances the appearance by concealing the outdoor mechanical combination lock within the stainless steel sleeve of the handle. The unlocking button is located at the end of the handle, making the structure more compact. The screws are placed inside the base, simplifying installation and concealing the screws. The mechanical lock is designed in the shape of a door handle, making it more aesthetically pleasing, compact, and lightweight, thus improving the overall performance of the device. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of an indoor wooden door mechanical combination lock according to the present invention; Figure 2 This is a front structural diagram of an indoor wooden door mechanical combination lock according to the present invention; Figure 3 This is a partial exploded view of the mechanical combination lock for indoor wooden doors according to this utility model; Figure 4 This is a schematic diagram of the joint component structure of an indoor wooden door mechanical combination lock according to the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of an indoor wooden door mechanical combination lock according to the present invention.

[0012] In the picture: 1. Outer shell; 2. Stainless steel sleeve; 3. Unlock button; 4. Combination lock; 5. Square tube; 6. Square buckle; 7. Base; 8. Adjusting wheel; 9. Adjusting slider; 10. Combination shaft sleeve; 11. Combination shaft; 12. Paddle; 13. Lock chip; 14. Lock plate; 15. Shaft seat; 501. Lock pin; 701. Snap ring; 702. Disc; 703. Chassis. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0014] Example 1: Refer to Figure 1-5 An indoor wooden door mechanical combination lock includes a housing 1 and a combination lock 4. The combination lock 4 is provided on one side of the housing 1, and an unlocking button 3 is provided on the side of the combination lock 4 away from the housing 1. The surface of the combination lock 4 is provided with a stainless steel sleeve 2. The surface of the combination lock 4 at corresponding positions on one side is provided with a stainless steel sleeve 2 and an unlocking button 3. The other side of the housing 1 is provided with a base 7, and a square tube 5 is provided between the bases 7.

[0015] In this embodiment, the door lock has two handles, an indoor handle and an outdoor handle. The handle without the mechanical combination lock 4 is the indoor handle, and the handle with the mechanical combination lock 4 is the outdoor handle. The outdoor mechanical combination lock 4 is hidden inside the stainless steel sleeve 2 of the handle. First, separate the indoor base 7 from the outer shell 1, and fix the indoor base 7 to the outdoor handle with screws. After installation, fasten the indoor outer shell 1 to the base 7 with a buckle, and the door lock is installed. Rotate the outdoor handle combination lock 4 to set the password. After setting, it can be used. When locking is required, pull the unlock button 3 at the end of the indoor handle. Using the lever mechanism, both the indoor and outdoor handles are locked. When unlocking is required indoors, press the unlock button 3 to unlock. When unlocking is required outdoors, unscrew the stainless steel sleeve 2 at the handle position, adjust to the correct password combination, and pull the unlock button 3 to unlock.

[0016] Example 2: Refer to Figures 4-5 Based on the above embodiment 1, the square tube 5 is provided with a bearing seat 15 at both ends, a locking pin 501 is provided inside the square tube 5, a locking chip 13 is provided inside the bearing seat 15, the locking chip 13 and the locking pin 501 are connected, a locking piece 14 is provided above the locking chip 13, the locking piece 14 is tightly fitted with the bearing seat 15, a lever 12 is provided on one side of the locking piece 14, and a tight shaft 11 is provided on one side of the lever 12. Through the lever mechanism, the inner and outer handles are locked.

[0017] Reference Figures 3-5 The base 7 includes a retaining ring 701, a disc 702, and a base plate 703. The retaining ring 701 has a buckle on one side, and the base plate 703 is connected to the outer shell 1 on one side. The disc 702 is located between the retaining ring 701 and the base plate 703. The retaining ring 701 is tightly fastened to the base plate 703 through the disc 702, so that the screws are installed through the inside of the base, so that the screws are not exposed and the base is more aesthetically pleasing.

[0018] Reference Figures 3-5The unlocking button 3 has a sealing wheel 8 on one side, and a sealing slider 9 is installed inside the sealing wheel 8. The security performance is improved by setting the sealing slider 9.

[0019] Reference Figures 3-5 A tight shaft sleeve 10 is provided on the outside of the tight shaft 11. The outer shell 1 and the unlocking button 3 are respectively connected to the two sides of the tight shaft sleeve 10. By providing the tight shaft sleeve 10, the tight shaft 11 becomes more flexible.

[0020] Reference Figures 1-2 The combination lock 4 has a square buckle 6 on the side near the outer shell 1. The outer shell 1 and the stainless steel sleeve 2 are fastened together by the square buckle 6. The square buckle 6 makes it easier to install and remove the stainless steel sleeve.

[0021] Working Principle: The door lock has two handles, an indoor handle and an outdoor handle. The handle without the mechanical combination lock 4 is the indoor handle, and the handle with the mechanical combination lock 4 is the outdoor handle. The outdoor mechanical combination lock 4 is hidden inside the stainless steel sleeve 2 of the handle. The stainless steel sleeve is more convenient to install and remove, and easier to enter the password, through the square buckle 6. First, separate the indoor base 7 from the outer shell 1, and fix the indoor base 7 to the outdoor handle with screws. The screws are installed inside the base to prevent them from being exposed, making it more aesthetically pleasing. After installation, fasten the indoor outer shell 1 to the base 7 with the buckle. The door lock is now installed. Rotate the combination lock 4 to set the password. After setting, it can be used. When locking, pull the unlock button 3 at the end of the indoor handle. The lever mechanism locks both the indoor and outdoor handles. To unlock from the indoor position, press the unlock button 3. To unlock from the outdoor position, unscrew the stainless steel sleeve 2 at the handle position, adjust to the correct password combination, and pull the unlock button 3 to unlock.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0023] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0024] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An indoor wooden door mechanical combination lock, comprising a shell (1) and a combination lock (4), characterized in that, A combination lock (4) is provided on one side of the outer shell (1). An unlocking button (3) is provided on the side of the combination lock (4) away from the outer shell (1). A stainless steel sleeve (2) is provided on the surface of the combination lock (4). A stainless steel sleeve (2) and an unlocking button (3) are provided on the corresponding positions on one side of the combination lock (4). A base (7) is provided on the other side of the outer shell (1). A square tube (5) is provided between the bases (7).

2. The mechanical combination lock for indoor wooden doors according to claim 1, characterized in that, The square tube (5) is provided with bearing seats (15) at both ends. A locking pin (501) is provided inside the square tube (5). A locking chip (13) is provided inside the bearing seat (15). The locking chip (13) and the locking pin (501) are connected. A locking piece (14) is provided above the locking chip (13). The locking piece (14) is in close contact with the bearing seat (15). A lever (12) is provided on one side of the locking piece (14). A tight shaft (11) is provided on one side of the lever (12).

3. The mechanical combination lock for indoor wooden doors according to claim 1, characterized in that, The base (7) includes a retaining ring (701), a disc (702) and a chassis (703). The retaining ring (701) has a buckle on one side, and the chassis (703) is connected to the outer shell (1) on one side. The disc (702) is located between the retaining ring (701) and the chassis (703). The retaining ring (701) is fastened to the chassis (703) through the disc (702).

4. The mechanical combination lock for indoor wooden doors according to claim 1, characterized in that, The unlocking button (3) is provided with a density adjustment wheel (8) on one side, and a density adjustment slider (9) is provided inside the density adjustment wheel (8).

5. The mechanical combination lock for indoor wooden doors according to claim 2, characterized in that, The shaft (11) is provided with a shaft sleeve (10) on the outside, and the outer shell (1) and the unlocking button (3) are respectively connected to the two sides of the shaft sleeve (10).

6. The mechanical combination lock for indoor wooden doors according to claim 5, characterized in that, The combination lock (4) has a square buckle (6) on the side near the outer shell (1), and the outer shell (1) and the stainless steel sleeve (2) are fastened together by the square buckle (6).