Punching-free chain coded lock

Abstract

The utility model relates to the technical field of chain coded locks, and discloses a punching-free chain coded lock, traceless adhesive sheets are arranged at the rear parts of a chain rope mounting seat and a coded lock seat, the punching-free chain coded lock is connected and mounted with the surface of furniture by utilizing the traceless adhesive sheets arranged at the rear parts of the chain rope mounting seat and the coded lock seat during mounting, punching is not needed, and the punching-free chain coded lock is simple in structure and convenient to use. Installation operation is convenient, the installation position can be effectively protected, good installation convenience is achieved, an adjustable chain rope installation structure is adopted, the limiting chain rope is installed on the upper portion of the chain rope reel in a winding mode, the extension length of the limiting chain rope can be flexibly adjusted according to installation requirements in the using process, the installation requirements of different types of door bodies can be met, and the practicability is high. After installation, the lower portion of the connecting limiting column is connected with a limiting embedding groove formed in the middle of the closed bottom cover in an embedded and clamped mode, rope length adjustment is conducted through the abutting knob, after rope length adjustment is completed, locking and limiting of the chain rope reel can be automatically completed only by releasing the connecting limiting column and rebounding, embedding and clamping, the structure is simple, and operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of chain combination lock technology, specifically a punch-free chain combination lock. Background Technology

[0002] Because children are naturally curious about their surroundings and often want to touch and explore them, there are many safety hazards in the home environment. For example, when children are crawling and playing at home, they may open refrigerator doors, cabinet doors, and drawer doors when adults are not watching. Due to a lack of safety awareness, their hands are easily pinched during the opening and closing of these doors, causing accidental personal injury. Furthermore, due to a lack of self-control, children often take large amounts of cold food from the refrigerator and eat it when adults are not paying attention, which seriously endangers their health. To address these issues, safety chain combination locks are often used in homes to lock and protect refrigerators, cabinet doors, and drawer doors.

[0003] Because there are various types of doors in a home, and the opening and closing angles and sizes of each type of door are different, the installation of a full chain combination lock relies on the chain rope for pulling and limiting. However, the chain rope structure of existing chain combination locks is mostly fixed. During installation, since the chain rope length is fixed, in order to ensure effective limiting of the door, the only way is to change the installation position of the lock seat. This is not only very inconvenient to install, but the lock seat installation is also restricted by the structure of the installation location, making it very inconvenient to use. Therefore, a drilling-free chain combination lock is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a punch-free chain combination lock to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a punch-free chain combination lock, comprising a chain mounting base, a combination lock base, and a limiting chain. The rear of both the chain mounting base and the combination lock base is provided with a non-marking adhesive sheet. A reel assembly is provided inside the chain mounting base. The limiting chain is wound and installed on the inner side of the chain mounting base via the reel assembly. The end of the limiting chain is locked and engaged with the combination lock base. An unlocking dial and an unlocking button are provided on the upper part of the combination lock base.

[0006] The reel assembly includes a chain reel, a connecting limiting post, a spring, and a closed bottom cover. The limiting chain is wound and installed on the upper part of the chain reel, and the chain reel is rotatably installed inside the chain mounting base. The connecting limiting post is movably fitted into the middle part of the chain reel under the push of the spring. After installation, the lower part of the connecting limiting post is fitted and engaged with the limiting groove provided in the middle of the closed bottom cover.

[0007] Preferably, the above-mentioned traceless adhesive sheet is provided in two sets, and the two sets of traceless adhesive sheets are respectively fixedly attached to the lower part of the base of the chain rope mounting seat and the combination lock seat. The traceless adhesive sheet on the side of the chain rope mounting seat is provided with a circular through hole in the middle.

[0008] Preferably, the lower part of the chain mounting base is provided with a reel mounting groove, the chain reel is rotatably fitted and installed inside the reel mounting groove, the upper part of the chain reel is provided with a chain locking slot, the end of the limiting chain is fitted and locked with the chain locking slot, and the limiting chain is wound and installed on the upper part of the chain reel.

[0009] Preferably, the chain reel has a column mounting groove through its center, which is adapted to a connecting limiting post, and the connecting limiting post is slidably fitted into the inner side of the column mounting groove.

[0010] Preferably, the spring is mounted on the upper part of the connecting limiting post, and the lower end of the connecting limiting post is provided with a limiting groove.

[0011] Preferably, the aforementioned closed bottom cover is fitted into the groove at the bottom of the chain mounting seat. The closed bottom cover is fixed to the lower opening side of the reel mounting groove by bolts. The limiting groove is opened in the middle of the closed bottom cover. After installation, the limiting groove at the bottom of the connecting limiting post is fitted into the limiting groove.

[0012] Preferably, a metal lock head is fixedly installed at the end of the aforementioned limiting chain rope, a lock head socket is provided on the side of the combination lock base, the metal lock head is inserted and installed inside the lock head socket and engages with the lock block inside the combination lock base, multiple unlocking dials are provided, several unlocking dials are coaxially rotatably installed on the upper part of the combination lock base, and the unlocking button is movably installed on the side of the combination lock base.

[0013] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0014] This chain combination lock features a drill-free installation structure. During installation, a non-marking adhesive patch located at the rear of the chain mounting base and the lock base connects the device to the furniture surface, eliminating the need for drilling. This convenient installation effectively protects the mounting area and offers excellent ease of installation. Furthermore, it employs an adjustable chain mounting structure. The chain reel within the mounting base winds the limiting chain, allowing for flexible adjustment of the chain extension length to suit various door types. A connecting limit post, in conjunction with a spring, engages with a slot to limit the rotation of the chain reel. The chain length is adjusted by pressing a knob. After adjustment, simply releasing the connecting limit post allows for automatic locking of the chain reel through a spring-loaded engagement. The design is simple and easy to use. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall installation three-dimensional structure of this utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the combination lock base of this utility model;

[0018] Figure 3 This is a schematic diagram of the chain rope mounting base and the limiting chain rope mounting structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the disassembled upper structure of the reel assembly of this utility model;

[0020] Figure 5 This is a schematic diagram of the lower structure of the reel assembly of this utility model after disassembly.

[0021] Explanation of reference numerals in the attached diagram: 1. Chain rope mounting base; 2. Combination lock base; 3. Limiting chain rope; 4. Non-marking adhesive sheet; 5. Unlocking dial; 6. Unlocking button; 7. Lock head socket; 8. Metal lock head; 9. Chain rope reel; 10. Connecting limit post; 11. Spring; 12. Sealing bottom cover; 13. Reel mounting slot; 14. Post mounting slot; 15. Limiting groove. Detailed Implementation

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce. Example

[0024] Please see Figure 1-5 This utility model provides a technical solution: a drill-free chain combination lock, including a chain mounting base 1, a combination lock base 2, and a limiting chain 3. To facilitate the connection and installation of the device, traceless adhesive sheets 4 are provided at the rear of both the chain mounting base 1 and the combination lock base 2, as shown in the attached diagram. Figure 1 As shown, two sets of traceless adhesive sheets 4 are provided. These sheets are soft, patch-type adhesives with high adhesion and separation integrity. The two sets of traceless adhesive sheets 4 are respectively fixedly attached to the lower part of the base of the chain rope mounting base 1 and the combination lock base 2. During installation, the traceless adhesive sheets 4 located at the rear of the chain rope mounting base 1 and the combination lock base 2 are used to connect the device to the furniture surface. No drilling is required, making installation convenient and effectively protecting the installation area. It offers good installation convenience. (See attached image.) Figure 4 As shown, in order to facilitate the rotation operation of the chain reel 9, a circular through hole is provided in the middle of the non-marking adhesive sheet 4 on the side of the chain mounting base 1.

[0025] The chain mounting base 1 is a structure for installing and storing the limiting chain 3. To facilitate the installation and storage of the limiting chain 3, a reel assembly is provided inside the chain mounting base 1. The limiting chain 3 is wound and installed on the inner side of the chain mounting base 1 through the reel assembly. The reel assembly includes a chain reel 9, a connecting limiting post 10, a spring 11, and a closing bottom cover 12, as shown in the attached figure. Figure 5 As shown, to facilitate the installation and connection of the chain reel 9, a reel mounting groove 13 is provided at the lower part of the chain mounting base 1. The chain reel 9 is rotatably fitted and installed inside the reel mounting groove 13. To facilitate the connection and installation of the end of the limiting chain 3, a chain locking slot is provided at the upper part of the chain reel 9. The end of the limiting chain 3 is fitted and locked with the chain locking slot. The limiting chain 3 is wound and installed on the upper part of the chain reel 9. The limiting chain 3 is wound and installed using the chain reel 9 in the chain mounting base 1. During use, the extension length of the limiting chain 3 can be flexibly adjusted according to the installation needs, which can meet the installation requirements of different types of doors.

[0026] To facilitate the installation and connection of the limiting post 10, see attached... Figure 4As shown, a column mounting groove 14 is provided through the middle of the chain reel 9. The column mounting groove 14 is adapted to the connecting limiting post 10. The connecting limiting post 10 is slidably fitted into the inner side of the column mounting groove 14 and can slide axially. In order to facilitate the return and reset of the connecting limiting post 10, a spring 11 is installed against the upper part of the connecting limiting post 10. The closed bottom cover 12 is used for the closed installation of the chain reel 9. The closed bottom cover 12 is fitted into the groove at the bottom of the chain mounting seat 1. The closed bottom cover 12 is fixedly installed in the lower opening of the reel mounting groove 13 by bolts. To achieve locking and limiting, a limiting groove is provided at the lower end of the connecting limiting post 10, and a limiting groove 15 is opened in the middle of the closed bottom cover 12. After installation, the limiting groove at the lower part of the connecting limiting post 10 and the limiting groove 15 are fitted and inserted. The rotation of the chain rope reel 9 is limited by the cooperation of the connecting limiting post 10 and the spring 11 and the locking and limiting of the chain rope reel 9 by the locking and limiting of the chain rope reel 9 by pressing the knob. After the rope length is adjusted, the connecting limiting post 10 is released and the chain rope reel 9 is automatically locked and limited by the spring-back locking and locking. The structure is simple and the operation is convenient.

[0027] The combination lock base 2 is a locking connection structure at the end of the limiting chain rope 3. The internal lock cylinder and locking structure of the combination lock base 2 are existing technologies, and their specific connection structures will not be described in detail here. Only the main working parts and their actions will be described, as shown in the attached diagram. Figure 3 As shown, a metal lock head 8 is fixedly installed at the end of the limiting chain rope 3. A limiting groove is provided on the upper part of the metal lock head 8. For insertion and limiting installation with the metal lock head 8, as shown in the attached diagram... Figure 2 As shown, a lock head socket 7 is provided on the side of the combination lock base 2. The metal lock head 8 is inserted and installed inside the lock head socket 7 and is engaged with the lock block inside the combination lock base 2. The locking of the end of the limiting chain rope 3 is achieved by the engagement of the lock block with the upper limiting groove of the metal lock head 8. To facilitate the unlocking operation, an unlocking dial 5 and an unlocking button 6 are provided on the upper part of the combination lock base 2. The unlocking dial 5 is equipped with four four-digit combination locks. The four unlocking dials 5 are coaxially mounted on the upper part of the combination lock base 2. Each unlocking dial 5 has ten digits on its upper part. By moving the dials to align the correct numbers, the lock cylinder can be unlocked. The unlocking button 6 is movably installed on the side of the combination lock base 2. The unlocking button 6 is connected to the linkage part of the lock block and is in contact with the locking part of the lock cylinder. After the lock cylinder is unlocked, pressing it can unlock the lock block.

[0028] Taking a refrigerator as an example, the working principle or structural principle involves adjusting the extension length of the limiting chain rope 3 according to the structural characteristics of the refrigerator door and the installation area. During adjustment, a hexagonal wrench is inserted from the rear into the hexagonal socket at the end of the connecting limiting post 10. Then, the wrench is pushed upwards and turned, adjusting the extension length of the limiting chain rope 3 by controlling the rotation of the chain rope reel 9. After adjustment, simply pull the wrench back, and under the push of the spring 11, the connecting limiting post 10 returns to its original position and connects with the closed bottom. The limiting groove 15 in the middle of the cover 12 is engaged and locked. The locking of the chain reel 9 is completed by the locking of the groove, and the adjustment of the limiting chain 3 is completed. Then, with the refrigerator door closed, the protective film on the upper part of the traceless adhesive film 4 at the back of the chain mounting base 1 is removed, and the chain mounting base 1 is attached to the upper part of the refrigerator door. Then, the limiting chain 3 is straightened and aligned. Then, the protective film on the upper part of the traceless adhesive film 4 at the back of the combination lock base 2 is removed, and the combination lock base 2 is attached to the side of the refrigerator to complete the installation of the device.

[0029] In use, the password is set by pressing the locking block inside the lock head socket 7. Then, the metal lock head 8 is locked and installed inside the lock head socket 7 by plugging it in. The unlocking dial 5 is randomly turned to complete the locking operation. When the refrigerator door is pulled in the unlocked state, the refrigerator door is pulled and limited by the limiting chain 3 to prevent the door from opening (the width of the door gap does not exceed 1 cm). To unlock, simply turn the unlocking dial 5 to the correct position, and then press the unlocking button 6 to unlock the lock block and pull out the metal lock head 8 to complete the unlocking operation.

[0030] In summary, this chain combination lock adopts a drill-free installation structure. During installation, the non-marking adhesive sheet 4 located at the rear of the chain mounting base 1 and the combination lock base 2 is used to connect the device to the furniture surface, eliminating the need for drilling. This makes installation convenient and effectively protects the installation area, offering excellent ease of installation. Furthermore, it employs an adjustable chain mounting structure. The chain reel 9 within the chain mounting base 1 winds the limiting chain 3, allowing for flexible adjustment of the extension length of the limiting chain 3 according to installation needs. This accommodates the installation requirements of different types of doors. The connecting limiting post 10, in conjunction with the spring 11, engages with the slot to limit the rotation of the chain reel 9. The rope length is adjusted by pressing the knob. After adjusting the rope length, simply releasing the connecting limiting post 10 allows for automatic locking of the chain reel 9 through springback engagement. The structure is simple and the operation is convenient.

[0031] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.

Claims

1. A punch-free chain combination lock, comprising a chain mounting base (1), a combination lock base (2), and a limiting chain (3), characterized in that: The rear of both the chain mounting base (1) and the combination lock base (2) are provided with non-marking adhesive sheets (4). The chain mounting base (1) is provided with a reel assembly. The limiting chain (3) is wound and installed on the inner side of the chain mounting base (1) through the reel assembly. The end of the limiting chain (3) is locked and snapped into the combination lock base (2). The upper part of the combination lock base (2) is provided with an unlocking dial (5) and an unlocking button (6). The reel assembly includes a chain reel (9), a connecting limit post (10), a spring (11), and a closed bottom cover (12). The limiting chain (3) is wound and installed on the upper part of the chain reel (9). The chain reel (9) is rotatably installed inside the chain mounting base (1). The connecting limit post (10) is movably fitted and installed in the middle part of the chain reel (9) under the push of the spring (11). After installation, the lower part of the connecting limit post (10) is fitted and engaged with the limiting groove (15) provided in the middle part of the closed bottom cover (12).

2. The punch-free chain combination lock according to claim 1, characterized in that: Two sets of the traceless adhesive sheet (4) are provided. The two sets of traceless adhesive sheets (4) are fixedly attached to the lower part of the base of the chain rope mounting seat (1) and the combination lock seat (2). A circular through hole is provided in the middle of the traceless adhesive sheet (4) on the side of the chain rope mounting seat (1).

3. The punch-free chain combination lock according to claim 1, characterized in that: The lower part of the chain mounting base (1) is provided with a reel mounting groove (13), the chain reel (9) is rotatably fitted and installed inside the reel mounting groove (13), the upper part of the chain reel (9) is provided with a chain locking slot, the end of the limiting chain (3) is fitted and locked with the chain locking slot, and the limiting chain (3) is wound and installed on the upper part of the chain reel (9).

4. A punch-free chain combination lock according to claim 3, characterized in that: A column mounting groove (14) is provided through the middle of the chain reel (9). The column mounting groove (14) is adapted to the connecting limiting post (10). The connecting limiting post (10) is slidably fitted into the inner side of the column mounting groove (14).

5. A punch-free chain combination lock according to claim 4, characterized in that: The spring (11) is mounted against the upper part of the connecting limit post (10), and the lower end of the connecting limit post (10) is provided with a limit groove post.

6. A punch-free chain combination lock according to claim 5, characterized in that: The closed bottom cover (12) is fitted into the groove at the bottom of the chain mounting seat (1). The closed bottom cover (12) is fixed to the lower opening side of the reel mounting groove (13) by bolts. The limiting groove (15) is opened in the middle of the closed bottom cover (12). After installation, the limiting groove at the bottom of the connecting limiting post (10) is fitted into the limiting groove (15).

7. A punch-free chain combination lock according to claim 3, characterized in that: The end of the limiting chain (3) is fixedly installed with a metal lock head (8). The side of the combination lock base (2) is provided with a lock head socket (7). The metal lock head (8) is inserted into the inside of the lock head socket (7) and is engaged with the lock block inside the combination lock base (2). Multiple unlocking dials (5) are provided. Several unlocking dials (5) are coaxially mounted on the upper part of the combination lock base (2). The unlocking button (6) is movably mounted on the side of the combination lock base (2).

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