Adjustable length and width protection box lock
By designing a protective box lock with adjustable length and width, and adopting multiple locking mechanisms and guide groove structure, independent adjustment of length and width is achieved, solving the problem of insufficient size adaptability in existing technologies and improving the versatility and stability of the anti-theft device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU YASEN ELECTRONICS
- Filing Date
- 2025-07-23
- Publication Date
- 2026-07-17
AI Technical Summary
Existing protective box locks cannot independently adjust length and width, making them unsuitable for packaging boxes of different sizes and lacking versatility.
An adjustable length and width protective box lock was designed. Through multiple locking mechanisms and guide groove structures in the base, right shell, and rear shell, the length and width can be independently adjusted. A ratchet structure is used for locking to ensure the stable fixation of the packaging box.
It achieves anti-theft function for packaging boxes of different sizes, and improves the versatility and stability of the device.
Smart Images
Figure CN224511997U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to anti-theft devices for goods, and in particular to a protective box lock with adjustable length and width. Background Technology
[0002] In supermarkets and other retail establishments, goods are often placed on open shelves. To prevent theft, anti-theft devices are typically installed on the goods. For goods with packaging boxes (such as mobile phone boxes and cosmetic boxes), conventional anti-theft devices need to match the outer contour of the box. Therefore, different sizes of anti-theft devices are required for different sized boxes. Existing improvements to anti-theft devices have resulted in split-type anti-theft protective boxes, which allow for proportional and simultaneous adjustment of width and length. However, they cannot allow for independent adjustment of length and width. Therefore, the improved anti-theft protective boxes cannot meet the anti-theft requirements of some packaged goods.
[0003] In summary, how to achieve independent adjustment of the length and width of the protective box lock and improve the versatility of the device has become an urgent problem for researchers in this field. Utility Model Content
[0004] The technical problem this utility model aims to solve is: how to achieve independent adjustment of the length and width of the protective box lock, thereby improving the versatility of the device; To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: This utility model is an adjustable-length and adjustable-width protective box lock, comprising: a base having a front side wall, a left side wall, and a first bottom wall; a right shell having a right side wall, the bottom of which is bent to the left to form a second bottom wall, the second bottom wall being guided above the first bottom wall; a rear shell having a rear side wall, the bottom of which is bent forward to form a third bottom wall, the third bottom wall being guided below the first bottom wall; the front side of the right shell is provided with a first toothed groove in the left-right direction, and the front side wall is provided with a first locking mechanism matching the first toothed groove; the bottom of the first bottom wall is provided with a second toothed groove in the front-back direction, and the third bottom wall is provided with a second locking mechanism matching the second toothed groove; the top of the left side wall is provided with a third locking mechanism, and the top of the right side wall is provided with a rack passing through a locking hole in the third locking mechanism.
[0005] Furthermore, a guide groove is provided on the upper part of the first bottom wall in the front-back direction, which facilitates the insertion of the second bottom wall into the guide groove from the right side.
[0006] Furthermore, a guide is provided in the left and right directions at the lower part of the first bottom wall to facilitate the insertion of the third bottom wall into the guide from the rear.
[0007] Furthermore, a guide rod is provided on the bottom wall, and a guide groove is formed in the second bottom wall in the left-right direction, with the guide rod located in the guide groove.
[0008] Furthermore, the bottom of the third bottom wall and the first bottom wall are provided with support legs.
[0009] Furthermore, the first tooth groove, the second tooth groove, and the rack are ratchet teeth, and the locking tongues in the first locking mechanism, the second locking mechanism, and the third locking mechanism are ratchet structures.
[0010] The beneficial effects of this utility model are as follows: This utility model is a protective box lock with adjustable length and width. In this device, the spacing between the front and rear side walls matches the length of the packaging box, and the spacing between the left and right side walls matches the width of the packaging box. Therefore, this device can achieve independent adjustment of length and width, and realize theft prevention for packaging boxes of different sizes. Attached Figure Description
[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural schematic diagram from another perspective of the present invention; Figure 3 This is a schematic diagram of the base structure; Figure 4 This is a structural schematic diagram of the base from another perspective; Figure 5 This is a schematic diagram of the right shell structure; Figure 6 This is a schematic diagram of the rear shell structure. Detailed Implementation
[0013] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.
[0014] See Figure 1 , 2 This embodiment is a protective box lock with adjustable length and width, including: a base 1 located on the left side of the figure, a rear shell 2 located on the rear side, and a right shell 31 located on the right side.
[0015] See Figure 3 , 4 The base 1 has a front side wall 11, a left side wall 12 and a first bottom wall 13. The front side wall 11 is provided with a first locking mechanism 41, and the bottom of the first bottom wall 13 is provided with a second tooth groove 52 in the front-rear direction.
[0016] See Figure 5 The right housing 2 has a right side wall 21, the bottom of which is bent to the left to form a second bottom wall 22. The right housing 2 has an overall L-shaped structure. The second bottom wall 22 is located on the upper side of the first bottom wall 13. The front side of the right housing 21 (near the front side wall 11) is provided with a first toothed groove 42 in the left and right direction. The first toothed groove 42 can cooperate with the first locking mechanism 41 to lock the right housing 2 to the base 1 after it moves to the left.
[0017] See Figure 6 The rear housing 3 has a rear side wall 31, the bottom of which is bent forward to form a third bottom wall 32. The rear housing 3 has an overall L-shaped structure. The third bottom wall 3 is located below the first bottom wall 13. A second locking mechanism 51 matching the second tooth groove 52 is provided on the third bottom wall 32. After the rear housing 3 moves forward, it is connected to the base 1 by the cooperation of the second tooth groove 52 and the second locking mechanism 51.
[0018] See Figure 1 A third locking mechanism 61 is provided at the top of the left side wall 11, and a rack 62 is provided at the top of the right side wall 21, which passes through the locking hole in the third locking mechanism 61; the third locking mechanism 61 and the rack 62 cooperate to prevent the packaging box from separating from the protective box lock from the top.
[0019] In this embodiment, the packaging box is first attached to the base 1, then the rear shell 3 and the right shell 2 are attached to the packaging box, and finally the rack 62 is connected to the third locking mechanism 61 around the top of the packaging box to limit the height of the packaging box. During the attachment process, the right shell 2 moves to the left, and the first tooth groove 42 moves to the left to the limited position and then cooperates with the first locking mechanism 41 to limit the position. Similarly, the rear shell 3 moves forward, and the second tooth groove 52 moves forward to the limited position and then cooperates with the second locking mechanism 51 to limit the position. The distance between the front side wall 12 and the rear side wall 31 matches the length of the packaging box, and the distance between the left side wall 11 and the right side wall 31 matches the width of the packaging box. Therefore, this device can achieve independent adjustment of length and width to prevent theft of packaging boxes of different sizes.
[0020] In some possible embodiments, see Figure 4 The first bottom wall 13 has a guide groove 14 in the front-back direction on the upper part, which facilitates the second bottom wall 22 to be inserted into the guide groove 14 from the right side.
[0021] In this embodiment, the guide groove 14 is used to make the first bottom wall 13 move in a straight line in only one direction during the insertion process from right to left, so as to prevent the first bottom wall 13 and the second bottom wall 22 from disengaging in the locking state.
[0022] In some possible embodiments, see Figure 2The first bottom wall 13 is provided with a guide 15 in the left and right directions at the lower part, so that the third bottom wall 32 can be inserted into the guide 15 from the rear.
[0023] In this embodiment, the guide 15 has an L-shaped structure, which forms a groove structure with the bottom of the first bottom wall 13. During the process of the third bottom wall 32 being inserted into the guide 15 from the rear, it only performs a linear movement in one direction, so as to avoid the first bottom wall 13 and the third bottom wall 32 from disengaging in the locking state.
[0024] In some possible embodiments, see Figure 4 , 5 A guide rod 16 is provided on the first bottom wall 13, and a guide groove 17 is provided on the second bottom wall 32 in the left and right direction, with the guide rod 16 located in the guide groove 17; In this embodiment, during the movement of the second bottom wall 22 to the left, the guide groove 17 moves to the left and cooperates with the guide rod 16, which further ensures the linear movement of the right shell 2 to the left.
[0025] In some possible embodiments, the bottom of the third bottom wall 32 and the first bottom wall 13 are provided with support legs 18; In this embodiment, see Figure 1 , 2 By setting the support legs 18, the device can be placed on a horizontal surface, avoiding the instability of the anti-theft box lock when it is placed due to the second locking mechanism 51 contacting the horizontal surface.
[0026] In some possible embodiments, the first tooth groove 42, the second tooth groove 52, and the rack 62 are ratchet teeth, and the locking tongue in the first locking mechanism 41, the second locking mechanism 51, and the third locking mechanism 61 is a ratchet structure. The first locking mechanism 41, the second locking mechanism 51, and the third locking mechanism 61 are all conventional technical solutions. For example, the locking device in Chinese Patent No. CN210972212U uses magnetic attraction to disengage the locking tongue from the first tooth groove 42, the second tooth groove 52, or the rack 62, which facilitates subsequent adjustment of the position of the rear shell 3 and the right shell 2, as well as adjustment of the length of the rack 62 acting on the packaging box. By employing the ratchet mechanism, during the movement of the right housing 2 to the left, the rear housing 3 to the forward, and the rack 62 in one direction, it is not necessary to unlock the first locking mechanism 41, the second locking mechanism 52, and the third locking mechanism 61. Only when the right housing 2, the rear housing 3, and the rack 62 move in the opposite direction do they need to be unlocked by the corresponding locking mechanism.
[0027] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A long and wide adjustable protection box lock, characterized by, include: A base having a front sidewall, a left sidewall, and a first bottom wall; The right housing has a right side wall, the bottom of which is bent to the left to form a second bottom wall, and the second bottom wall guide is located above the first bottom wall; The rear housing has a rear sidewall, the bottom of which is bent forward to form a third bottom wall, the third bottom wall being guided below the first bottom wall; The front side of the right housing is provided with a first toothed groove in the left-right direction, and the front side wall is provided with a first locking mechanism that matches the first toothed groove; The bottom of the first bottom wall is provided with a second toothed groove in the front-to-back direction, and the third bottom wall is provided with a second locking mechanism that matches the second toothed groove; A third locking mechanism is provided at the top of the left side wall, and a rack with a locking hole in the third locking mechanism is provided at the top of the right side wall.
2. The adjustable length and width protective case lock of claim 1, wherein, The upper part of the first bottom wall is provided with a guide groove in the front-to-back direction, so that the second bottom wall can be inserted into the guide groove from the right side.
3. The adjustable length and width protective case lock of claim 1, wherein, The lower part of the first bottom wall is provided with a guide in the left and right directions, so that the third bottom wall can be inserted into the guide from the rear.
4. The adjustable width and length protective case lock of claim 1, wherein, A guide rod is provided on the bottom wall, and a guide groove is opened in the second bottom wall in the left and right direction, with the guide rod located in the guide groove.
5. The adjustable width and length protective case lock of claim 1, wherein, The bottom of the third bottom wall and the first bottom wall are provided with support legs.
6. The adjustable width and length protective case lock of claim 1, wherein, The first tooth groove, the second tooth groove, and the rack are ratchet teeth, and the locking tongue in the first locking mechanism, the second locking mechanism, and the third locking mechanism is a ratchet structure.