Rotary locking flip-top food storage container

By adopting a rotary locking structure and a flip-top mechanism on the food storage container, the problem of sealing failure in existing food storage containers has been solved, achieving reliable locking between the lid and the container body and good sealing performance, thus extending the service life.

WO2026002272A1PCT designated stage Publication Date: 2026-01-02FANG YUHAO
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Patent Information

Application Number
PCT/CN2025/105226
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-06-29
Filing Date
2025-06-28
Publication Date
2026-01-02

AI Technical Summary

Technical Problem

The existing food storage containers have a fastening structure that is prone to wear and tear, leading to seal failure and making it impossible to keep food fresh for a long time.

Method used

The box adopts a rotary locking structure. By setting a rotating groove and knob on the lid, the locking plate and the locking hole are used to achieve a reliable locking between the lid and the box body. Combined with the flip-top mechanism and sealing structure, the sealing effect is ensured.

Benefits of technology

It achieves zero-wear locking between the lid and the box body, extends service life, improves sealing performance, and ensures the freshness of food.

✦ Generated by Eureka AI based on patent content.

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    Figure CN2025105226_02012026_PF_FP_ABST
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Abstract

A rotary locking flip-top food storage container, comprising a container body and a container cover, a sealing structure being provided between the container body and the container cover. A side of the container body and container cover is provided with a rotary locking structure, while the other side of the container body and container cover is provided with a flip-top mechanism. The rotary locking structure comprises a rotary recess recessed downwards from the container cover, a rotary knob being provided in the rotary recess. A locking piece is provided on the rotary knob, a container body opening part corresponding to the locking piece being provided with a container edge raised upwards. A corresponding locking hole is provided in the container edge, the locking piece fitting the locking hole. Compared with existing food storage containers on the market, the present solution uses the rotary locking structure, in which the fit between the locking piece and the locking hole causes near-zero wear, thus achieving reliable locking, a longer service life, better sealing performance, and a more reliable food fresh keeping effect.
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Description

A rotating locking flip-top food storage container Technical Field

[0001] This invention relates to food storage containers, specifically to a rotary locking flip-top food storage box, belonging to the field of storage containers. Background Technology

[0002] There are many types of food storage containers on the market, but their basic structure consists of a container body and a lid. A sealing ring is installed on the lid. When the lid is placed on the container body, a fastening mechanism secures it, and the sealing ring helps maintain a seal inside the container, thus achieving the purpose of food preservation. Currently, common fastening mechanisms include latches on the lid and retaining ribs on the container body, with the latches engaging with the retaining ribs. However, since food storage containers are generally made of plastic, after prolonged use, the latches and retaining ribs will wear down or age, causing the lid to fail to close tightly, the container to lose its seal, and thus lose its purpose of food preservation. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a rotary locking flip-top food storage box that uses a rotary locking structure to securely lock the lid and body together without wear and tear and provides good preservation, and also uses a flip-top structure for easy use.

[0004] The technical solution of the present invention for a rotary locking flip-top food storage container is as follows: it includes a container body and a lid, a sealing structure between the container body and the lid, a rotary locking structure on one side of the container body and the lid, and a flip-top mechanism on the other side of the container body and the lid. The rotary locking structure includes a downwardly recessed rotary groove on the lid, a knob in the rotary groove, a locking piece on the knob, an upwardly protruding edge on the opening of the container body corresponding to the locking piece, and a corresponding locking hole on the edge, the locking piece cooperating with the locking hole.

[0005] This invention discloses a rotary-locking flip-top food storage container, characterized by a downwardly recessed rotating groove on the lid. A knob is positioned within this groove, and a locking plate is attached to the knob. When closing the lid, rotating the knob manually engages the locking plate in the locking hole, locking the lid and container together. To open the lid, rotating the knob in the opposite direction unlocks it. Flipping the lid then causes the pivot pin on the lid to rotate around the connecting hook, lifting the lid. This design offers simple and convenient operation for both closing and opening the lid. Compared to existing food storage containers on the market, the rotary-locking structure ensures near-zero wear between the locking plate and the locking hole, resulting in reliable locking, a longer service life, better sealing performance, and more reliable food preservation.

[0006] This invention discloses a rotary-locking flip-top food storage container. The flip-top mechanism has several technical solutions, including a connecting hook on the container body and a connecting seat with a pin on the lid, where the pin engages easily with the hook. A bevel is provided on one side of the locking hole to facilitate the locking plate's entry. The sealing structure includes a groove on the inner periphery of the container body's opening, within which a triangular sealing ring is placed. A sealing pressure ring is located under the lid, engaging with the sealing ring. When the lid is closed, the sealing pressure ring presses down on the sealing ring, resulting in a better seal. A locking structure is provided between the knob and the rotating groove. This locking structure includes a limiting protrusion on the outer wall of the knob, with three triangularly distributed notches on the limiting protrusion. A corresponding limiting plate is provided on the inner wall of the rotating groove. The limiting plate cooperates with the limiting protrusion and the notches. In use, the knob is locked in the rotating groove by the cooperation of the limiting plate and the limiting protrusion. During installation and removal, the limiting plate aligns with the notches to allow the knob to be inserted or removed. A positioning block is provided on the bottom surface of the knob, and a locking positioning block, a locking unlocking positioning block, and a disengagement positioning block are provided on the bottom surface of the rotating groove. Arrows are provided on the surface of the knob, and corresponding locking, unlocking, and disengagement markings are provided on the surface of the cover. With these markings, when the knob is rotated, the arrow points to the corresponding marking, indicating the function of that marking, facilitating operation. The bottom of the rotating groove is also provided with a vent hole, and the bottom surface of the knob is provided with a vent pressure block. The vent pressure block cooperates with the vent hole. When the knob is turned to the locked position, the vent pressure block presses on the vent hole, and the entire food storage container is in a sealed state, with good freshness preservation effect. When the knob is turned to the unlocked position, the vent pressure block separates from the vent hole, and the vent hole can release air. The outer wall of the container is fitted with an outer shell, which has perforations for an aesthetically pleasing appearance. The bottom of the outer shell is provided with feet, which ensures stability and facilitates the stacking of multiple food storage containers. Attached Figure Description

[0007] Figure 1 is a three-dimensional schematic diagram of a rotary locking flip-top food storage container according to the present invention;

[0008] Figure 2 is a cross-sectional schematic diagram of a rotary locking flip-top food storage container according to the present invention.

[0009] Figure 3 is a top view of the lid of the present invention;

[0010] Figure 4 is a top view of the knob of the present invention. Detailed Implementation

[0011] This invention relates to a rotary locking flip-top food storage container, as shown in Figures 1-4. It includes a container body 1 and a lid 2, with a sealing structure between the container body and the lid. A rotary locking structure is provided on one side of the container body 1 and the lid 2, and a flip-top mechanism is provided on the other side of the container body 1 and the lid 2. The rotary locking structure includes a downwardly recessed rotary groove 5 on the lid 2, a knob 6 in the rotary groove 5, a locking piece 7 on the knob, and an upwardly protruding edge 8 at the opening of the container body 1 corresponding to the locking piece 7. The edge 8 has a corresponding locking hole 9, and the locking piece 7 cooperates with the locking hole 9. The main feature of this design is the downward-recessed rotating groove 5 on the lid 2, within which a knob 6 is located. A locking piece 7 is mounted on the knob. When closing the lid, turning the knob 6 by hand causes the locking piece 7 to engage with the locking hole 9, locking the lid 2 and the box body 1 together. To open the lid, turning the knob 6 in the opposite direction unlocks it. Then, flipping the lid 2 causes the pivot pin 11 on the lid 2 to rotate around the connecting hook 10, thus lifting the lid 2. This design is simple and convenient to operate, whether closing or opening the lid. Compared to existing food storage containers on the market, this design uses a rotating locking structure with almost zero wear between the locking piece and the locking hole, ensuring reliable locking, longer service life, better sealing performance, and more reliable food preservation. Various technical solutions exist for the flipping mechanism, such as a connecting hook 10 on the box body 1 and a connecting seat 12 with a pivot pin 11 on the lid 2, where the pivot pin 11 engages with the connecting hook 10 for easy engagement. The lock hole 9 has a bevel 91 on one side, which facilitates the insertion of the lock plate into the lock hole. The sealing structure includes a groove 31 on the periphery of the inner wall of the opening of the box body 1, in which a sealing ring 3 with a triangular cross-section is set. A sealing pressure ring 32 is set under the box cover 2. The sealing pressure ring 32 cooperates with the sealing ring 3. When the cover is closed, the sealing pressure ring presses down on the sealing ring, resulting in a better sealing effect. A locking structure is provided between the knob 6 and the rotating groove 5. The locking structure includes a limiting protrusion 61 on the outer wall of the knob 6, with three triangularly distributed notches 62 on the limiting protrusion. A corresponding limiting plate 51 is set on the inner wall of the rotating groove 5. The limiting plate 51 cooperates with the limiting protrusion 61 and the notches 62. In use, the knob is locked in the rotating groove by the cooperation of the limiting plate and the limiting protrusion. When installing or removing, the limiting plate must correspond to the notches to allow the knob to be installed or removed. The bottom surface of the knob 6 is provided with a positioning block 65, and the bottom surface of the rotating groove 5 is provided with a locking positioning block 55, a locking opening positioning block 56, and a disengagement positioning block 57. An arrow 66 is provided on the surface of the knob 6, and the surface of the cover 2 is provided with corresponding locking markings 58, locking opening markings 59, and disengagement markings 54. With the above markings, when the knob is turned, the arrow points to the corresponding marking, which indicates that the knob has been turned to the corresponding function, which is convenient for operation.The bottom of the rotating groove 5 is also provided with an exhaust hole 21, and the bottom surface of the knob 6 is provided with an exhaust pressure block 22. The exhaust pressure block 22 cooperates with the exhaust hole 21. When the knob is turned to the locked position, the exhaust pressure block presses on the exhaust hole, and the entire food storage box is in a sealed state, with a good freshness-locking effect. When the knob is turned to the unlocked position, the exhaust pressure block separates from the exhaust hole, and the exhaust hole can release air. The outer wall of the box body 1 is fitted with an outer shell 15, which is provided with perforations 16 for an aesthetically pleasing appearance. The bottom of the outer shell 15 is provided with feet 17, which ensures stable placement and facilitates the stacking of multiple food storage boxes together.

[0012] In actual products, the box body 1 and the box cover 2 can be various shapes such as rectangle, square, circle, pentagon, hexagon, etc., all of which are suitable for the rotation locking structure of this technical solution.

Claims

1. A rotary locking flip-top food storage container, comprising a container body (1) and a lid (2), wherein a sealing structure is provided between the container body and the lid, characterized in that: A rotating locking structure is provided on one side of the box body (1) and the box cover (2), and a flip-top mechanism is provided on the other side of the box body (1) and the box cover (2). The rotating locking structure includes a downwardly recessed rotating groove (5) on the box cover (2), a knob (6) in the rotating groove (5), a locking piece (7) on the knob, and an upwardly protruding box edge (8) at the opening of the box body (1) corresponding to the locking piece (7). A corresponding lock hole (9) is provided on the box edge (8), and the locking piece (7) and the lock hole (9) cooperate with each other.

2. A rotary locking flip-top food storage container as described in claim 1, characterized in that... The flip-top mechanism includes a connecting hook (10) on the box body (1) and a connecting seat (12) with a shaft pin (11) on the box cover (2), with the shaft pin (11) engaging with the connecting hook (10).

3. A rotary locking flip-top food storage container as described in claim 1, characterized in that... A bevel (91) is provided on one side of the lock hole (9).

4. A rotary locking flip-top food storage container as described in claim 1, characterized in that... The sealing structure includes a groove (31) set around the inner wall of the opening of the box body (1), a sealing ring (3) with a triangular cross section set in the groove, and a sealing pressure ring (32) set under the box cover (2), which cooperates with the sealing ring (3).

5. A rotary locking flip-top food storage container as described in claim 1, characterized in that... A locking structure is provided between the knob (6) and the rotating groove (5). The locking structure includes a limiting protrusion ring (61) on the outer wall of the knob (6), and three notches (62) arranged in a triangular pattern on the limiting protrusion ring. A corresponding limiting plate (51) is provided on the inner wall of the rotating groove (5). The limiting plate (51) cooperates with the limiting protrusion ring (61) and the notches (62).

6. A rotary locking flip-top food storage container as described in claim 1, characterized in that... The bottom surface of the knob (6) is provided with a positioning block (65), the bottom surface of the rotating groove (5) is provided with a locking positioning block (55), a locking opening positioning block (56) and a disengaging positioning block (57), and an arrow (66) is provided on the surface of the knob (6), and the surface of the cover (2) is provided with corresponding locking marks (58), locking opening marks (59) and disengaging marks (54).

7. A rotary locking flip-top food storage container as described in claim 1, characterized in that... The bottom of the rotating groove (5) is also provided with an exhaust hole (21), and the bottom surface of the knob (6) is provided with an exhaust pressure block (22), which cooperates with the exhaust hole (21).

8. A rotary locking flip-top food storage container as described in claim 1, characterized in that... The outer wall of the box (1) is fitted with an outer shell (15), the outer shell is provided with a perforation (16), and the bottom of the outer shell (15) is provided with a foot (17).

Citation Information

Patent Citations

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