A combination lock for a case
By designing a lock mechanism for the box, utilizing structures such as a rotating shaft, a moving bar, and a lock cylinder, an opening mechanism that does not require a password or key is achieved. This solves the problem of the loss of traditional hidden compartments and mechanisms in furniture, and enhances the security of the box.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO ZHENHAI JIEDENG APPL TECH INST
- Filing Date
- 2025-06-13
- Publication Date
- 2026-07-24
AI Technical Summary
The hidden compartments and mechanisms in traditional furniture have been lost and are no longer effective in protecting valuables; existing locks lack innovation.
Design a lock for a box, which uses a rotating shaft, a sliding bar, a lock cylinder, and a drop tenon. The lock can be opened without a password or key by rotating the button and sliding the bar.
It allows for easy opening of the box without a password or key, but it also increases the difficulty of opening the box, making it quite difficult for those who are unaware of its internal structure.
Smart Images
Figure CN224549864U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a piece of furniture, and more particularly to a mechanism lock for a box. Background Technology
[0002] With the nation's increasing emphasis on traditional culture, inventors have been exploring and protecting the mortise and tenon techniques and hidden compartments in traditional furniture. In the past, there were no safes like those we have today, and various locks like those available now were also rare. Therefore, craftsmen used to design hidden compartments and create mechanical boxes in furniture to hide valuables. These designs were generally quite concealed, and opening them required skill. However, many of the hidden compartments and various mechanical devices in traditional furniture have been lost. Therefore, the inventor has redesigned various hidden compartments and mechanical devices and now provides a mechanical lock for a box to fill the aforementioned gaps.
[0003] In view of the above-mentioned defects, the creator of this utility model has finally obtained this utility model after a long period of research and practice. Utility Model Content
[0004] The purpose of this utility model is to provide a mechanism lock for a box to overcome the above-mentioned technical defects.
[0005] To achieve the above objectives, the present invention provides a mechanism lock for a box, comprising a top plate, a bottom plate, two side plates, a high-end plate, and a low-end plate. The top plate sliding groove is provided on the opposite surfaces of the two side plates and on the inner side of the high-end plate. A mechanism lock is provided between the low-end plate and the top plate. The mechanism lock includes a rotating shaft, a moving bar, and a lock cylinder. The low-end plate has a lock cylinder hole, and the lower end of the lock cylinder hole has a moving bar mounting hole. One end of the top plate has a lock hole that matches the lock cylinder.
[0006] The rotating shaft is provided with an eccentric circular boss, the outer end of the rotating shaft is provided with a protruding rotating button, and the inner end of the rotating shaft is provided with a washer, which is fixed to the rotating shaft by screws.
[0007] The movable bar is provided with a step for limiting the movable bar, and the movable bar is also provided with an arc-shaped notch that matches the eccentric circular boss;
[0008] The movable strip is provided with two notches, namely a first notch and a second notch. The lower plate is provided with a drop tenon hole, and a drop tenon is provided in the drop tenon hole. When the movable strip moves to one side limit, the drop tenon can fall into the second notch. When the movable strip moves to the other side limit, the drop tenon can fall into the first notch. The depth of the first notch and the second notch is half the length of the drop tenon.
[0009] The low-end plate has two layers, namely an inner layer and an outer layer. The lock cylinder, the moving strip, the drop tenon, and the eccentric circular boss are all arranged between the inner layer and the outer layer.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: the mechanism lock of the box designed by this utility model does not require a password or a key, and can be easily opened by markings made by oneself. If the internal structure is unknown, it is indeed quite difficult to open the mechanism box. Attached Figure Description
[0011] Figure 1 This is a front sectional view of the mechanism lock of a box according to the present invention.
[0012] Figure 2 This is a top sectional view of the mechanism lock of a box according to the present invention.
[0013] Figure 3 This is a right-side cross-sectional view of the mechanism lock on a box according to the present invention after it is locked.
[0014] Figure 4 This is a schematic diagram of the right-side cross-sectional structure of a box according to the present invention after the mechanism lock is opened;
[0015] Figure 5 This is a right-side cross-sectional view of the mechanism lock of a box according to the present invention, showing that the lock cylinder remains locked even after the movable bar is pulled out. Detailed Implementation
[0016] The technical features and advantages of this utility model will be described in more detail with reference to the accompanying drawings.
[0017] An embodiment of a lock for a box includes a top plate 9, a bottom plate 16, two side plates 1, a high-end plate 2, and a low-end plate. Sliding grooves for the top plate 9 are provided on the opposite surfaces of the two side plates 1 and on the inner side of the high-end plate 2. A lock mechanism is provided between the low-end plate and the top plate 9. The lock mechanism includes a rotating shaft 5, a moving bar 11, and a lock cylinder 10. A hole for the lock cylinder 10 is provided on the low-end plate, and a mounting hole for the moving bar 11 is provided at the lower end of the lock cylinder 10 hole. A lock hole matching the lock cylinder 10 is provided at one end of the top plate 9. The rotating shaft 5... An eccentric circular boss 7 is provided. A protruding rotary button 6 is provided at the outer end of the rotating shaft 5. A washer 8 is provided at the inner end of the rotating shaft 5. The washer 8 is fixed to the rotating shaft 5 by screws. The moving strip 11 is provided with a step for limiting the moving strip 11. The moving strip 11 is also provided with an arc-shaped notch that matches the eccentric circular boss 7. The moving strip 11 is provided with two recesses, namely the first recess 12 and the second recess 14. A drop tenon hole is provided on the lower end plate. A drop tenon 15 is provided in the drop tenon hole. When the sliding bar 11 moves to one side limit, the drop tenon 15 can fall into the second recess 14. When the sliding bar 11 moves to the other side limit, the drop tenon 15 can fall into the first recess 12. The depth of the first recess 12 and the second recess 14 is half the length of the drop tenon 15. The bottom plate has two layers, namely the inner layer 4 and the outer layer 3. The lock cylinder 10, the sliding bar 11, the drop tenon 15, and the eccentric circular boss 7 are all set between the inner layer 4 and the outer layer 3. When the box is to be locked, turn the rotation button 6 to rotate the eccentric circular boss 7 to the maximum position. At the highest point, push the lock cylinder 10 upwards into the lock hole of the top plate 9. The moving bar 11 moves to the limit position on one side, and the drop tenon 15 falls into the second recess 14. The rotating button 6 can no longer be rotated, and the moving bar 11 is also locked by the drop tenon 15 and cannot move. The lock cylinder 10 is locked and cannot come down. To open the box, turn the box upside down, and the drop tenon 15 falls back into the drop tenon hole. Push the moving bar 11 so that the arc-shaped notch of the moving bar 11 is opposite to the eccentric circular boss 7. Rotate the rotating button 6 to rotate the eccentric circular boss 7 to the lowest point, and the lock cylinder 10 falls. The box can be opened. If the moving bar 11 is pushed to the limit position on the other side, the drop tenon 15 will fall into the first recess 12. In this case, the box still cannot be opened. Therefore, it is indeed quite difficult to open the mechanism box without knowing the internal structure.
[0018] The above description is merely a preferred embodiment of the present utility model and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present utility model, all of which will fall within the protection scope of the present utility model.
Claims
1. A mechanism lock for a box, comprising a top plate, a bottom plate, two side plates, a high-end plate, and a low-end plate, wherein the opposing surfaces of the two side plates and the inner side of the high-end plate are each provided with a sliding groove for the top plate, characterized in that... A mechanism lock is provided between the lower plate and the top plate. The mechanism lock includes a rotating shaft, a moving bar, and a lock cylinder. The lower plate is provided with a lock cylinder hole, and the lower end of the lock cylinder hole is provided with a mounting hole for the moving bar. One end of the top plate is provided with a lock hole that matches the lock cylinder.
2. The mechanism lock for a box according to claim 1, characterized in that, The rotating shaft is provided with an eccentric circular boss, the outer end of the rotating shaft is provided with a protruding rotating button, and the inner end of the rotating shaft is provided with a washer, which is fixed to the rotating shaft by screws.
3. The mechanism lock for a box according to claim 2, characterized in that, The movable strip is provided with a step for limiting the movable strip, and the movable strip is also provided with an arc-shaped notch that matches the eccentric circular boss.
4. The mechanism lock for a box according to claim 3, characterized in that, The movable strip is provided with two notches, namely a first notch and a second notch. The lower plate is provided with a drop tenon hole, and a drop tenon is provided in the drop tenon hole. When the movable strip moves to one side limit, the drop tenon can fall into the second notch. When the movable strip moves to the other side limit, the drop tenon can fall into the first notch. The depth of the first notch and the second notch is half the length of the drop tenon.
5. The mechanism lock for a box according to claim 4, characterized in that, The low-end plate has two layers, namely an inner layer and an outer layer. The lock cylinder, the moving strip, the drop tenon, and the eccentric circular boss are all arranged between the inner layer and the outer layer.