A portable retractable lock

Abstract

The utility model relates to the technical field of lockset, concretely is a kind of portable telescopic lockset, including fixed seat, connecting rope and lock body, the movable cavity is provided in the fixed seat, connecting rope one end through the fixed seat and is connected with first end head, first spring and gasket are also provided in the movable cavity, first spring and gasket are all set on the connecting rope, the both ends of first spring are connected with gasket and first end head respectively;The portable telescopic lockset, first spring of fixed seat is set on the connecting rope, need not accurate judgment tension when installing: when user tightens connecting rope, first spring will compress along with tension, the degree of tightness is intuitively perceived to user by spring elastic force feedback, avoid excessive tension;Even if slight over-tight situation appears, the length deviation of connecting rope can be compensated by the telescopic allowance of first spring, ensure that lock body and fixed seat are installed, connecting rope still retains activity clearance, solve the core problem of "lock tongue cannot slide into slot".

Description

Technical Field

[0001] This utility model relates to the field of lock technology, specifically a portable telescopic lock. Background Technology

[0002] This lock, consisting of a connecting rope fixing base, a connecting rope, and a lock body with a mechanical combination lock, is suitable for mechanical combination locks on refrigerators, cabinet doors, and drawers. It uses a purely mechanical structure to set and verify the password, requiring no power support.

[0003] Before installation, the connecting rope between the connecting rope fixing seat and the lock body needs to be tightened before fixing it to the box and door panel. If the user cannot judge the tightening force, the lock may be tightened too much and then fixed. This will result in the lock tongue in the lock body and the connecting rope plug slot having no room to move. When the user inserts the connecting rope plug into the lock body, there will be a "slight difference in length", and the lock tongue will not be able to slide into the connecting rope plug slot, resulting in locking failure. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] Compared with existing locks of the same type, the newly added first spring telescopic function has a simple structure and is easy to assemble. During installation and use, users can feel the tightness and better identify the effective installation positioning distance, thereby avoiding the situation where the connecting rope is not long enough and locking fails. This utility model provides a portable telescopic lock.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a portable telescopic lock, comprising a fixed base, a connecting rope, and a lock body, wherein the fixed base is provided with a movable cavity, one end of the connecting rope passes through the fixed base and is connected to a first end, and a first spring and a washer are also provided in the movable cavity, wherein the first spring and the washer are both sleeved on the connecting rope, and the two ends of the first spring are respectively connected to the washer and the first end;

[0008] The lock body includes a lock shell, a pressure block, a combination lock, an output shaft, a second spring, a paddle, a third spring, and a limiting frame. The lock shell has a fixed cavity. The other end of the connecting rope passes through the lock shell and has a second end. The second end passes through the limiting frame and has a groove that fits the inner wall of the limiting frame. The fixed cavity also has a C-shaped spring frame. The spring frame has a third spring. The two ends of the third spring are respectively connected to the inner wall of the spring frame and one end of the limiting frame.

[0009] The fixed cavity also contains a combination lock for controlling the extension and retraction of the output shaft. One end of the output shaft is inserted into the combination lock, and the other end of the output shaft is connected to the lever. The output shaft is fitted with a second spring, and the two ends of the second spring are respectively connected to the lever and the end housing of the combination lock. The pressure block passes through the lock housing and is connected to one end of the lever. The other end of the lever contacts the other end of the limiting frame.

[0010] Preferably, the back side of the fixed seat is provided with a first back plate that closes the movable cavity, the back side of the lock case is provided with a second back plate that closes the fixed cavity, the back side of the pressure block is also provided with a sliding groove, and the second back plate is also provided with a guide plate that inserts into the sliding groove.

[0011] Preferably, the front of the lock housing is provided with a through hole that matches the lock wheel of the combination lock.

[0012] To facilitate the fixing of the mounting base and the lock housing, this utility model is improved by providing a first adhesive on the back side of the first back plate and a second adhesive on the back side of the second back plate.

[0013] Preferably, the end of the second end furthest from the connecting rope is also rounded.

[0014] Preferably, the connecting rope is a steel wire rope.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the present invention provides a portable telescopic lock with the following advantages:

[0017] This portable telescopic lock features a first spring inside the mounting base that is fitted onto the connecting rope. During installation, precise tension control is unnecessary: ​​when the user tightens the connecting rope, the first spring compresses accordingly, allowing the user to intuitively perceive the tightness through spring force feedback, thus preventing over-tightening. Even in cases of slight over-tightening, the first spring's extension allowance compensates for any length deviation in the connecting rope, ensuring that the connecting rope retains a play after the lock body and mounting base are installed, thus solving the core problem of "the bolt failing to slide into the slot." Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 This is a bottom view of the structure of this utility model;

[0020] Figure 3 This is a partial schematic diagram of the structure of this utility model;

[0021] Figure 4 This is an exploded view of the structure of this utility model.

[0022] In the diagram: 1. Fixed base; 2. Connecting rope; 3. First spring; 4. Washer; 5. Lock case; 6. Pressure block; 7. Combination lock; 8. Output shaft; 9. Second spring; 10. Paddle; 11. Third spring; 12. Limiting frame; 13. First end; 14. Second end; 15. First back plate; 16. Second back plate; 17. Guide plate; 18. First adhesive; 19. Second adhesive; 20. Spring frame. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 A portable telescopic lock includes a fixed base 1, a connecting rope 2 and a lock body. The fixed base 1 has a movable cavity. One end of the connecting rope 2 passes through the fixed base 1 and is connected to a first end 13. A first spring 3 and a washer 4 are also provided in the movable cavity. The first spring 3 and the washer 4 are both sleeved on the connecting rope 2. The two ends of the first spring 3 are respectively connected to the washer 4 and the first end 13.

[0025] The lock body includes a lock shell 5, a pressure block 6, a combination lock 7, an output shaft 8, a second spring 9, a paddle 10, a third spring 11, and a limiting frame 12. The lock shell 5 has a fixed cavity. The other end of the connecting rope 2 passes through the lock shell 5 and has a second end 14. The second end 14 passes through the limiting frame 12. The second end 14 has a groove that fits the inner wall of the limiting frame 12. The fixed cavity also has a C-shaped spring frame 20. The spring frame 20 has a third spring 11 inside it. The two ends of the third spring 11 are connected to the inner wall of the spring frame 20 and one end of the limiting frame 12, respectively.

[0026] The fixed cavity also contains a combination lock 7 that controls the extension and retraction of the output shaft 8. One end of the output shaft 8 is inserted into the combination lock 7, and the other end of the output shaft 8 is connected to the lever 10. The output shaft 8 is fitted with the second spring 9, and the two ends of the second spring 9 are respectively connected to the lever 10 and the end housing of the combination lock 7. The pressure block 6 passes through the lock housing 5 and is connected to one end of the lever 10. The other end of the lever 10 contacts the other end of the limiting frame 12.

[0027] In this embodiment, the back of the fixed base 1 is provided with a first back plate 15 that closes the movable cavity, the back of the lock case 5 is provided with a second back plate 16 that closes the fixed cavity, the back of the pressure block 6 is also provided with a sliding groove, the second back plate 16 is also provided with a guide plate 17 that is inserted into the sliding groove, the back of the first back plate 15 is also provided with a first adhesive 18, and the back of the second back plate 16 is also provided with a second adhesive 19.

[0028] During installation, the mounting base 1 (with the first adhesive 18) is fixed to the cabinet (such as the refrigerator cabinet), and the lock body (with the second adhesive 19) is fixed to the door panel (such as the refrigerator door). When the user pulls the connecting rope 2, the connecting rope 2 drives the first end 13 to move into the movable cavity of the mounting base 1, compressing the first spring 3 (the washer 4 serves to distribute the spring pressure and prevent local wear).

[0029] The elastic force of the first spring 3 will increase synchronously with the compression amount, allowing the user to intuitively perceive the tightening force through tactile feedback. When the elastic force reaches a moderate range (no precise measurement is required), the lock body and the fixing seat 1 can be fixed to avoid excessive tightening.

[0030] If the installation is slightly too tight, the first spring 3 will retain a compression allowance (the compensation stroke is determined by the spring constant, usually ≥5mm). When the second end 14 is subsequently inserted, the first spring 3 can release the allowance through rebound to compensate for the length deviation of the connecting rope 2, ensuring that there is sufficient clearance between the limiting frame 12 in the lock body and the slot of the second end 14, thus solving the locking failure problem of "the bolt cannot slide into the slot" from the root.

[0031] After closing the door, insert the second end 14 of the other end of the connecting rope 2 into the limiting frame 12 of the lock body: the rounded design of the second end 14 guides it to smoothly pass through the limiting frame 12. At this time, the slot of the second end 14 is aligned with the inner wall of the limiting frame 12, preparing for subsequent engagement.

[0032] Regardless of whether the combination lock 7 is in the unlocked state, the second end 14 is inserted into the lock case 5. The rounded end 14 abuts against the limiting frame 12, and the third spring 11 is compressed. When the slot is aligned with the limiting frame 12, the third spring 11 returns to its original position, thus fixing the second end 14.

[0033] After entering the correct password, the internal mechanism of the combination lock 7 unlocks, releasing the limit on the output shaft 8. Pressing the pressure block 6 (the guide plate 17 is embedded in the groove of the pressure block 6 to ensure that the pressing direction is vertical and stable) causes the pressure block 6 to drive one end of the lever 10 to rotate downwards, while the other end of the lever 10 tilts upwards and pushes the limit frame 12 to move towards the spring frame 20, compressing the third spring 11 and completing the unlocking.

[0034] The first back plate 15 encloses the movable cavity of the fixing seat 1, and the second back plate 16 encloses the fixing cavity of the lock body to prevent dust and debris from entering the interior and affecting the operation of the spring and transmission components; the first adhesive 18 and the second adhesive 19 achieve holeless quick fixing, which is compatible with different carriers such as refrigerators, cabinet doors, and drawers, and is convenient and firm to install.

[0035] The connecting rope 2 is made of steel wire rope, which is high in strength and not easily stretched or deformed, ensuring the stability of its length during long-term use; the through hole on the front of the lock case 5 exposes the lock wheel of the combination lock 7, making it convenient for users to enter the password. The overall pure mechanical structure does not require power support, avoiding the failure of the lock due to battery depletion, and is suitable for a variety of usage scenarios.

[0036] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0037] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A portable telescopic lock, comprising a base (1), a connecting rope (2), and a lock body, characterized in that, The fixed base (1) is provided with a movable cavity. One end of the connecting rope (2) passes through the fixed base (1) and is connected to the first end (13). The movable cavity is also provided with a first spring (3) and a washer (4). The first spring (3) and the washer (4) are both sleeved on the connecting rope (2). The two ends of the first spring (3) are respectively connected to the washer (4) and the first end (13). The lock body includes a lock shell (5), a pressure block (6), a combination lock (7), an output shaft (8), a second spring (9), a paddle (10), a third spring (11), and a limiting frame (12). The lock shell (5) has a fixed cavity. The other end of the connecting rope (2) passes through the lock shell (5) and has a second end (14). The second end (14) passes through the limiting frame (12). The second end (14) has a slot that matches the inner wall of the limiting frame (12). The fixed cavity also has a C-shaped spring frame (20). The spring frame (20) has a third spring (11). The two ends of the third spring (11) are connected to the inner wall of the spring frame (20) and one end of the limiting frame (12), respectively. The fixed cavity also contains a combination lock (7) for controlling the extension and retraction of the output shaft (8). One end of the output shaft (8) is inserted into the combination lock (7), and the other end of the output shaft (8) is connected to the lever (10). The output shaft (8) is fitted with the second spring (9). The two ends of the second spring (9) are respectively connected to the lever (10) and the end housing of the combination lock (7). The pressure block (6) passes through the lock housing (5) and is connected to one end of the lever (10). The other end of the lever (10) is in contact with the other end of the limiting frame (12).

2. A portable telescopic lock according to claim 1, characterized in that, The fixed base (1) has a first back plate (15) on its back side that closes the movable cavity, the lock case (5) has a second back plate (16) on its back side that closes the fixed cavity, the pressure block (6) also has a sliding groove on its back side, and the second back plate (16) also has a guide plate (17) that is inserted into the sliding groove.

3. A portable telescopic lock according to claim 2, characterized in that, The front of the lock case (5) is provided with a through hole that is compatible with the lock wheel of the combination lock (7).

4. A portable telescopic lock according to claim 3, characterized in that, The back of the first back panel (15) is also provided with a first adhesive (18), and the back of the second back panel (16) is also provided with a second adhesive (19).

5. A portable telescopic lock according to claim 4, characterized in that, The second end (14) is also provided with a rounded end away from the connecting rope (2).

6. A portable telescopic lock according to claim 5, characterized in that, The connecting rope (2) is made of steel wire rope.

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