Locking structure for box
By designing a limiting frame and locking points, the problem of complex and easily accidentally opened existing box locking structures is solved, achieving a stable and simple locking effect, reducing costs and improving security.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN CITY WANXINLONG METAL MFG CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-05-12
AI Technical Summary
The existing box locking structure requires the additional installation of a latching mechanism, which increases costs and time, is inconvenient to operate and poses a risk of damage. It is also easily opened by children, posing a safety hazard.
The design incorporates a limiting frame, snap points, snap edges, locking edges, raised steps, and snap points. Double locking is achieved through the contact between the snap points and snap edges and the misalignment between the snap points and notches, simplifying the locking process.
It achieves a stable locking structure, eliminating the need for additional locking mechanisms, reducing costs, simplifying operation, preventing accidental opening by children, and eliminating safety hazards.
Smart Images

Figure CN224225703U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of boxes, and specifically to a locking structure for boxes. Background Technology
[0002] In existing technologies, the self-locking structure of boxes relies on a latch mechanism, combination lock, or other complex locks installed in the bottom box and top cover to achieve locking. Even after the bottom box and top cover are locked together, a cumbersome unlocking process is required. The drawbacks of traditional box locking structures are: firstly, the need for an additional latch mechanism increases production costs and processing time; secondly, the latch mechanism is inconvenient to use and carries a significant risk of damage, potentially compromising the box's security function; and thirdly, the simple latch mechanism is easily opened by children, potentially leading to accidental ingestion of contents such as medication, posing a safety hazard. Utility Model Content
[0003] To address the aforementioned shortcomings of existing technologies, the technical problem this invention aims to solve is how to optimize the locking structure of a box. Therefore, a locking structure for a box is provided, with the specific technical solution as follows:
[0004] A locking structure for a box includes a limiting frame, a latching point, a latching edge, a locking edge, a raised step, and a latching point. The limiting frame is a hollow structure and is positioned above the bottom of the box. At least one latching point is provided on the side of the limiting frame. The latching edge is positioned on the side of the top cover of the box. When the top cover closes the bottom cover, the latching point abuts against the latching edge. The latching edge has a width that allows the latching point to move laterally. A locking edge is provided on the upper side of the limiting frame. The locking edge has at least one notch or groove, which is a through groove. The raised step is positioned on the inner side of the top cover. The latching point is positioned on the side of the raised step, and the position of the latching point corresponds to the position of the notch or groove. After the latching point enters the notch or groove, when the latching point moves and is misaligned with the notch or groove, the latching point can abut against the locking edge.
[0005] As a preferred embodiment of this utility model, the front side of the limiting frame is provided with two spaced-apart latching points, which protrude forward.
[0006] As a preferred embodiment of this utility model, the limiting frame is square, and the locking edge is set around the four sides of the limiting frame, extending from the outside to the center of the limiting frame.
[0007] As a preferred embodiment of this utility model, the protruding step is separated from the side wall of the upper cover by a gap, the four sides of the upper cover are bent inward to form a locking edge, the locking point is set on the front side of the protruding step, the locking point protrudes forward, and there are two locking points that are separated.
[0008] As a preferred embodiment of this utility model, a rotating groove is provided on the rear side of the bottom box, and through holes are provided on both sides of the rotating groove. A rotating shaft is provided on the lower rear side of the top cover. The bottom box is rotatably connected to the top cover by the rotating shaft passing through the rotating shaft and the through holes. The top cover closes the bottom box to form a space for placing items. The width of the rotating groove is at least 2mm larger than the width of the rotating shaft. The gap between the rotating shaft and the side wall of the rotating groove forms a movement gap.
[0009] As a preferred embodiment of this utility model, the cross-sectional area of the convex step is smaller than the inner cavity area of the limiting frame, and the convex step is located inside the limiting frame when the top cover closes the bottom box.
[0010] As a preferred embodiment of this utility model, the inner side of the top cover is also provided with at least one side protrusion, which is close to the side of the raised step, and the side protrusion can be locked by the edge.
[0011] As a preferred embodiment of this utility model, when the locking point enters the notch groove, the side protrusion is located on the outer side of the locking edge; when the locking point and the notch groove are misaligned, the side protrusion is located on the inner side of the locking edge.
[0012] As a preferred embodiment of this utility model, the outer wall of the square frame is closer to the central axis of the bottom box than the outer wall of the bottom box.
[0013] As a preferred embodiment of this utility model, the thickness of the protrusions of the buckle points and locking points does not exceed 1.5mm.
[0014] Beneficial effects: The locking structure of this utility model for boxes is ingeniously designed. When initially locking, the top cover closes to the bottom box and the latching point abuts against the edge. After the latching point enters the notch groove, when the latching point moves and misaligns with the notch groove, the latching point can abut against the locking edge, achieving double locking. The locking is stable and reliable. The box can be locked without the need for additional latching structure, saving costs. It is simple and convenient to operate and can effectively prevent children from accidentally opening the box, eliminating safety hazards. Attached Figure Description
[0015] Figure 1 This is a perspective view of the present invention;
[0016] Figure 2 This is an exploded view of the present invention;
[0017] Figure 3 This is a top view of the present invention in its initial locked state;
[0018] Figure 4 yes Figure 3 A cross-sectional view along the AA direction;
[0019] Figure 5 This is a top view of the present invention in its final locked state;
[0020] Figure 6 yes Figure 5 Cross-sectional view along the BB direction;
[0021] Figure 7 yes Figure 5 A cross-sectional view along the CC direction;
[0022] Figure 8 This is a perspective view of the top cover of this utility model;
[0023] Figure 9 This is a perspective view of the present invention from the rear.
[0024] Figure 10 This is a rear view of the present invention. Detailed Implementation
[0025] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings:
[0026] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0028] like Figure 1-6As shown, a locking structure for a box includes a limiting frame 1, a latching point 2, a latching edge 3, a locking edge 4, a raised step 5, and a latching point 6. The limiting frame 1 is a hollow structure and is positioned above the bottom box 7 of the box. At least one latching point 2 is provided on the side of the limiting frame 1. The latching edge 3 is located on the side of the top cover 8 of the box. When the top cover 8 closes the bottom box 7, the latching point 2 abuts against the latching edge. The latching edge 3 has a width that allows the latching point 2 to move laterally, that is, when the latching point 2 moves laterally with the bottom box 7, the latching point 2 still abuts against the latching edge. The upper side of the locking edge 3 and the limiting frame 1 is provided with a locking edge 4. The locking edge 4 is provided with at least one notch 9. The notch 9 is a through groove. The raised step 5 is provided on the inner side of the upper cover 8. The locking point 6 is provided on the side of the raised step 5. The position of the locking point 6 corresponds to the position of the notch 9. The width of the notch 9 is slightly larger than the locking point 6. The protrusion thickness of the locking point 2 and the locking point 6 does not exceed 1.5mm to avoid difficulty in opening and closing. After the locking point 6 enters the notch 9, when the locking point 6 moves and is misaligned with the notch 9, the locking point 6 can abut against the locking edge 4.
[0029] When it is necessary to lock the top cover 8 and the bottom box 7 together, such as Figure 3 and Figure 4 As shown, first, close the top cover 8 onto the bottom box 7 so that the locking point 6 passes through the notch 9. At this time, the locking point 6 is located below the locking edge 4, which is the initial locking state. Then, move the top cover 8 horizontally to misalign the locking point 6 with the notch 9. The locking point 6 is now blocked by the locking edge 4 and cannot be easily opened. Figure 5 and Figure 6 As shown, this is the final locked state. With the latch point 2 abutting against the latch edge 3, the double locking structure is more stable and easy to operate; simply reverse the operation to unlock.
[0030] In some embodiments, the front side of the limiting frame 1 is provided with two spaced-apart latching points 2, the latching points 2 protrude forward, and the position of the latching point 13 is offset from the position of the notch 7. This structure increases the likelihood that the top cover 8 will not be easily opened in the initial locked state.
[0031] In some embodiments, the limiting frame 1 is square, and the locking edge 4 is arranged around the four sides of the limiting frame 1. The locking edge 4 extends from the outside to the center of the limiting frame 1 to form a locking point 6 structure that restricts misalignment.
[0032] In some embodiments, such as Figure 7 and 8 As shown, there is a gap between the raised step 5 and the side wall of the upper cover 8. The four sides of the upper cover 8 are bent inward to form a retaining edge 3. The locking point 6 is set on the front side of the raised step 5. The locking point 6 protrudes forward. There are two locking points 6, which are set apart. The cross-sectional area of the raised step 5 is smaller than the inner cavity area of the limiting frame 1. When the upper cover 8 closes the bottom box 7, the raised step 5 is located inside the limiting frame 1. The raised step 5 will not hinder the bottom box 7 from closing with the upper cover 8, nor will it hinder the relative movement of the two.
[0033] In some embodiments, such as Figure 9and 10 As shown, the bottom box 7 has a rotating groove 10 on the rear side, and through holes 11 on both sides of the rotating groove 10. The bottom cover 8 has a rotating shaft part 12 on the lower rear side. The bottom box 7 is rotatably connected to the top cover 8 by a rotating shaft 13 passing through the rotating shaft part 12 and the through holes 11. When opened, the top cover 8 can rotate relative to the bottom box 7 around the rotating shaft. The top cover 8 closes the bottom box 7 to form a storage space 20 for placing items. The width L1 of the rotating groove 10 is at least 2mm larger than the width L2 of the rotating shaft part 12. The gap between the rotating shaft part 12 and the side wall of the rotating groove 10 forms a moving gap 14. The moving gap 14 facilitates the relative lateral movement of the bottom box 7 and the top cover 8.
[0034] In some embodiments, at least one side protrusion 13 is provided on the inner side of the top cover 8. The side protrusion 13 is close to the side of the protruding step 15 and protrudes downward. The side protrusion 13 can pass through the locking edge 4. When the locking point 6 enters the notch groove 9, the side protrusion 13 is located outside the locking edge 4. When the locking point 6 is misaligned with the notch groove 9, the side protrusion 13 is located inside the locking edge 4. On the one hand, it allows the user to feel when the top cover 8 is moved so that the user knows that it has been moved into place. On the other hand, it also prevents the top cover 8 from moving by itself and opening accidentally when subjected to a small external force.
[0035] In some embodiments, the outer wall of the limiting frame 1 is closer to the central axis of the bottom box 7 than the outer wall of the bottom box 7, and the space between the outer wall of the limiting frame 1 and the outer wall of the bottom box 7 can be used as a moving space for the top cover 8.
[0036] The above description is a further detailed explanation of the present utility model in conjunction with specific preferred embodiments. It should not be considered that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the protection scope of the present utility model.
Claims
1. A locking structure for a box, characterized in that: The box includes a limiting frame, snap points, snap edges, locking edges, raised steps, and snap points. The limiting frame is a hollow structure and is located above the bottom of the box. At least one snap point is located on the side of the limiting frame. The snap edge is located on the side of the top cover of the box. When the top cover closes the bottom cover, the snap point abuts against the snap edge. The snap edge has a width that allows the snap point to move laterally. A locking edge is located on the upper side of the limiting frame. The locking edge has at least one notch or groove, which is a through groove. The raised step is located on the inside of the top cover. The snap point is located on the side of the raised step, and the position of the snap point corresponds to the position of the notch or groove. After the snap point enters the notch or groove, when the snap point moves and is misaligned with the notch or groove, the snap point can abut against the locking edge.
2. The locking structure for a box according to claim 1, characterized in that: The front side of the limiting frame has two spaced-apart locking points that protrude forward.
3. The locking structure for a box according to claim 1, characterized in that: The limiting frame is square, and the locking edge is set around the four sides of the limiting frame, extending from the outside to the center of the limiting frame.
4. The locking structure for a box according to claim 1, characterized in that: There is a gap between the raised step and the side wall of the top cover. The four sides of the top cover are bent inward to form a locking edge. The locking point is set on the front side of the raised step. The locking point protrudes forward and there are two locking points that are set apart.
5. A locking structure for a box according to claim 1, characterized in that: The bottom box has a rotating groove on the back, with through holes on both sides. The bottom cover has a rotating shaft on the lower back. The bottom box is rotatably connected to the top cover by the rotating shaft passing through the rotating shaft and through holes. The top cover closes the bottom box to form a space for placing items. The width of the rotating groove is at least 2mm larger than the width of the rotating shaft. The gap between the rotating shaft and the side wall of the rotating groove forms a movement gap.
6. A locking structure for a box according to claim 1 or 5, characterized in that: The cross-sectional area of the raised step is smaller than the area of the inner cavity of the limiting frame. When the top cover closes the bottom box, the raised step is located inside the limiting frame.
7. A locking structure for a box according to claim 1, characterized in that: The inner side of the top cover is also provided with at least one side protrusion, which is close to the side of the raised step. The side protrusion can be locked through the edge.
8. A locking structure for a box according to claim 7, characterized in that: When the locking point enters the notch groove, the side protrusion is located on the outside of the locking edge; when the locking point is misaligned with the notch groove, the side protrusion is located on the inside of the locking edge.
9. A locking structure for a box according to claim 1, characterized in that: The outer wall of the square frame is closer to the central axis of the bottom box than the outer wall of the bottom box.
10. A locking structure for a box according to any one of claims 1-9, characterized in that: The thickness of the protrusions at the buckle points and locking points shall not exceed 1.5mm.