Food sealing storage container

Abstract

A food sealing storage container comprises a box body, a cover body and a lock catch hinged to the side portion of the box body through a rotating shaft, a buckling structure used for locking the box body is formed between the free end of the lock catch and the cover body, a cam type extrusion portion deviating from the axis of the rotating shaft is arranged on the lock catch, and a pressed portion extending outwards is correspondingly formed on the edge of the cover body. When the lock catch is overturned towards the unlocking direction, the extrusion part is cut into the lower part of the pressed part along with the rotating track, and the cover body is jacked up according to the lever principle, so that mechanical linkage of the lock catch action and the jacking of the cover body is realized; the air leakage hole is formed in the cover body, and the blocking part corresponding to the air leakage hole is arranged on the lock catch, so that when the lock catch is in the buckling state, the blocking part tightly presses the air leakage hole in a sealing mode, and when the lock catch is rotated to the unlocking state, the blocking part is separated from the air leakage hole to form an air leakage channel. The food sealed storage container is labor-saving in uncovering, reliable in sealing, convenient to operate and suitable for being used by various people with one hand.

Description

Technical Field

[0001] This utility model relates to the field of storage container technology, specifically to a food sealing and storage container. Background Technology

[0002] In the food storage container industry, ease of opening has always been a key focus. Traditional airtight containers typically rely on manual latching, lacking mechanical linkage assistance, which forces users to exert considerable force to overcome latch resistance and pressure differences. For example, common rectangular food storage containers are directly latched on the edge, requiring fingers to be inserted into the gap to force them open. The lever arm is short and there is no leverage, making it difficult for the elderly and children to operate, and may even cause food spillage due to excessive force.

[0003] To address the aforementioned issues, existing technologies have attempted to improve upon them. For example, the invention patent "Gas-Proof Storage Container and Method of Use" with application number 201610324233.6 (authorization announcement number CN106144179B) exposes the vent hole to balance the air pressure through latch rotation. However, the latch is only used for fixing and venting and does not form a mechanical linkage with the opening action, still requiring manual force to overcome the resistance of the seal. Another example is "Double-Snap Sealed Container" with application number 202510345434.3 (application publication number CN119858725A), which relies on the elastic reset of the sealing ring to assist in opening the lid. However, the elastic material is prone to aging, and the locking rotating end is located at the edge, which cannot form an effective mechanical transmission.

[0004] Further industry research revealed that the core flaw in traditional solutions lies in the lack of a linkage mechanism between the locking mechanism and the opening action. Existing locking mechanisms merely serve as fixing components, lacking integrated mechanical assistance, resulting in the opening process still relying on a fragmented operation of "manual separation + air pressure balancing." For example, some double-lock containers require unlocking the locking mechanism first, followed by manually prying open the lid, failing to utilize the locking mechanism's own movement trajectory to generate a pushing force.

[0005] To address this issue, there is an urgent need in the field for a mechanical structure that assists in opening the lid through a latching linkage effect. Specifically, during the latching or unlocking process, its rotation or sliding motion triggers a lifting mechanism, converting the latch's operating force into mechanical assistance for opening the lid. However, in existing technologies, the latch and the lid-opening structure are independent of each other, failing to form an effective linkage. This design faces the following technical contradictions:

[0006] 1. Structural integration challenges: The latch needs to simultaneously achieve both fixed sealing and mechanical lifting functions, which places high demands on spatial layout and mechanical transmission.

[0007] 2. Operational logic conflict: Traditional latch operation is based on "fixed sealing". The linkage to open the cover requires a redesign of the movement trajectory to avoid interference with the sealing function.

[0008] In summary, how to organically combine the locking operation with the mechanically assisted opening process through the linkage effect of the locking mechanism, while ensuring sealing performance, to form an integrated mechanism of "operating the locking mechanism to trigger the lifting", thereby reducing the opening force and achieving convenient operation, is a technical bottleneck that urgently needs to be overcome in this field. Utility Model Content

[0009] The technical problem to be solved by this utility model is to provide a food sealing and storage container that can achieve mechanically assisted opening and closing through locking linkage, and has a small footprint and is easy and smooth to operate, in light of the above-mentioned existing technology.

[0010] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: the food sealing and storage container includes a box body, a lid and a lock. The lock is hinged to the side of the box body through a pivot, and the free end of the lock and the lid form a fastening structure for locking the box body.

[0011] The latch is provided with a cam-type pressing part that is offset from the axis of rotation, and the edge of the cover is correspondingly formed with an outwardly extending pressure part;

[0012] When the latch is flipped in the unlocking direction, the pressing part cuts into the underside of the pressure part along the rotation trajectory, and lifts the cover through the lever principle, realizing the mechanical linkage between the latch action and the lifting of the cover.

[0013] In order to achieve air pressure balance inside the storage container and prevent abnormal air pressure inside the box from affecting opening and closing due to temperature changes, handling and shaking, etc., preferably, the cover is provided with a vent hole and the latch is provided with a sealing part corresponding to the vent hole.

[0014] When the latch is engaged, the sealing part seals and presses against the vent hole;

[0015] When the latch is rotated to the unlocked position, the sealing part separates from the vent hole to form a venting channel.

[0016] The vent and sealing mechanism work together to maintain a tight seal inside the box when it is closed, and to balance the air pressure when it is unlocked. This prevents difficulties in opening or loose closing due to pressure differences, thus improving the stability and reliability of the storage container.

[0017] To optimize the structural stability and ease of operation of the latch, and to ensure the reliable operation of the latching and linkage functions, preferably, the latch includes a hinge portion extending vertically in the latched state and a latching portion extending laterally from the top of the hinge portion toward the inward side, the pressing portion is formed at the bottom of the hinge portion, and the latching structure is located between the latching portion and the cover.

[0018] The vertical hinge and the horizontal fastening part form a stable "L"-shaped structure, which makes the force on the lock more even during rotation and fastening, reducing the risk of structural deformation due to long-term use. The horizontal fastening part also makes it easy to operate with finger force, improving the user experience.

[0019] To further improve the fitting accuracy between the extrusion part and the pressure-receiving part, and to ensure the smoothness and stability of the mechanical linkage, preferably, the extrusion part is a convex structure with a triangular cross-section, and the pressure-receiving part is a plate-like body that extends laterally outward from the edge of the cover.

[0020] When the latch is in the unlocked flipped state, the pressing part abuts against the bottom of the plate-like body and lifts the cover away;

[0021] When the cover is closed, the bottom of the plate-shaped body abuts against the pressing part, causing the latch to automatically flip to the preset fastening angle.

[0022] The combination of the triangular protrusion structure and the plate-like body ensures effective force transmission while utilizing the guiding effect of the triangle to make the lifting and fastening actions smoother and more precise, avoiding phenomena such as jamming and misalignment.

[0023] To enhance the reliability and robustness of the fastening structure, and to improve the overall sealing performance of the storage container, preferably, the fastening structure includes...

[0024] A latch groove is provided at the free end of the latch;

[0025] The corresponding buckle is set on the top of the cover;

[0026] The buckle and the buckle groove form a snap-fit ​​engagement that can be fixed or separated.

[0027] The snap-fit ​​mechanism of the slot and buckle is simple and reliable, and can withstand a large amount of external force, ensuring that the storage container will not be accidentally opened during transportation and storage. The tight snap-fit ​​can also improve the sealing between the box and the lid, preventing food odors from escaping and external dust and moisture from entering.

[0028] To optimize the spatial layout of the fastening structure and improve the convenience and concealment of the fastening operation, preferably, a recessed groove is formed on the top of the cover, the buckle is formed on the side wall of the groove, and the buckle groove extends into the groove to form an embedded fastening structure with the buckle.

[0029] The recessed design allows the locking mechanism to be built into the top of the box, avoiding protruding parts that take up extra space. The embedded locking method is also more discreet and less likely to be accidentally unlocked due to external impact. At the same time, fingers can easily reach into the recess to operate the lock, improving ease of use.

[0030] To improve the sealing performance and service life of the sealing part, and to ensure its tight fit with the locking structure, preferably, the sealing part is made of flexible material and is integrally molded with the locking mechanism through composite injection molding;

[0031] The sealing part is arc-shaped and seals the vent hole by pressing the arc-shaped surface.

[0032] The flexible sealing part can better fit the vent hole, adapt to minor deformations, and improve the sealing effect. The composite injection molding process enhances the connection strength between the sealing part and the latch, extending the service life. The arc-shaped pressing sealing method further optimizes the sealing performance and reduces the risk of air leakage compared to the flat sealing.

[0033] To facilitate user operation of the latch and optimize the latch structure to integrate more functions, preferably, the latching part has an integrally formed arc-shaped bending structure, which includes a raised section extending towards the free end and a sunken section protruding towards the box body, and the sealing part is disposed at the bottom of the sunken section.

[0034] The curved, bent structure forms a raised section that fits into the groove of the box, providing a comfortable point of force for the fingers and facilitating unlocking. At the same time, the sealing part is set in the recessed section that protrudes towards the box, making reasonable use of space and making the locking structure more compact and functionally integrated.

[0035] To ensure balanced force distribution on both sides of the storage container and improve overall stability and consistency of opening and closing operations, preferably, a pair of latches are symmetrically arranged on both sides of the box body, and the corresponding grooves and pressure-bearing parts are arranged in corresponding positions.

[0036] The symmetrical design of the latches ensures that the box is subjected to even force on both sides during locking and unlocking, avoiding structural deformation or poor sealing caused by unilateral force. The symmetrical structure also further enhances the rationality and coordination of the overall design.

[0037] Compared with existing technologies, the advantages of this invention are as follows: By setting a cam-type pressing part offset from the axis of rotation on the latch and setting an outwardly extending pressure-receiving part on the edge of the lid, when the latch flips in the unlocking direction, the pressing part cuts into the pressure-receiving part along the rotation trajectory, directly lifting the lid using the lever principle. Since the latch unlocking action and the lid lifting are integrated through a mechanical linkage design, there is no need to manually forcefully separate the lid; simply operating the latch triggers the lifting mechanism. The lever principle significantly reduces the force required to open the lid, making it especially easy for the elderly and children to use, and avoiding the risk of food spillage due to excessive force when forcibly opening the lid. At the same time, the bottom of the pressure-receiving part abuts against the protruding structure of the pressing part, allowing the latch to automatically flip to the preset locking angle when the lid is closed, eliminating the need to manually adjust the initial angle of the latch, making subsequent locking operations smoother. In addition, since there is no need to set up an additional independent lifting device, it also has the advantages of simplified structure and small space occupation, truly realizing the integrated mechanism of "operating the lock to trigger the lifting", which significantly improves the convenience of opening the lid, operation safety and user experience.

[0038] In addition, the vent hole of the cover is linked with the arc-shaped sealing part of the latch to realize intelligent switching between sealing and venting, which significantly improves the sealing reliability compared with traditional manual venting or easily aged elastic venting structure. Attached Figure Description

[0039] Figure 1 This is a three-dimensional structural diagram of this embodiment (the latch is in the locked state);

[0040] Figure 2 This is a three-dimensional structural diagram of this embodiment (the latch is in the unlocked and flipped-down state);

[0041] Figure 3 This is a schematic diagram of the decomposed state structure of this embodiment;

[0042] Figure 4 This is a cross-sectional view of the structure of this embodiment (the latch is in the locked state);

[0043] Figure 5 This is a cross-sectional view of the structure in this embodiment (the latch is in the unlocked and flipped-down state). Detailed Implementation

[0044] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0045] Figures 1-5 The present invention is shown as the preferred embodiment. The specific implementation of the present invention will be described in detail below with reference to the accompanying drawings.

[0046] The food sealing and storage container in this embodiment mainly includes a box body 1, a lid body 2, and a lock 3.

[0047] Among them, reference Figure 1 and Figure 2 As shown, the latch 3 is hinged to the side of the box body 1 via a pivot 4, and can rotate around the pivot to switch between the latched and unlocked states. The box body 1 and the lid 2 are sealed together by a latching structure 5 located between the latch 3 and the lid 2. At the same time, the mechanical linkage between the cam-type pressing part 33 on the latch 3 and the pressure-bearing part 21 of the lid enables the lid to be opened.

[0048] The specific structure and connection relationships of each component are described below:

[0049] Lock 3 is a key component for opening, closing, and sealing the storage container. (Refer to...) Figures 3 to 5 As shown, it is hinged to the side of the box body 1 via a pivot 4, and can rotate around the pivot 4, switching back and forth between the locked and unlocked states. The latch 3 includes a hinge part 31 located at the bottom and a latching part 32 located at the top. The hinge part 31 is vertically arranged in the locked state, and has a cam-type pressing part 33 at the bottom. The pressing part 33 is a protruding structure with a triangular cross-section, and is offset from the central axis of the pivot 4, forming an eccentric lever fulcrum, providing a mechanical basis for assisting in opening the lid. The latching part 32 extends laterally from the top of the hinge part 31 toward the inside of the box body 1, forming an "L"-shaped structure with the hinge part 31. Its free end has a latching groove 51, which can engage with the latch 52 on the top of the lid body 2.

[0050] The fastening part 32 also has an integrally formed arc-shaped bending structure 6, which includes a raised section 61 extending towards the free end and a sunken section 62 protruding towards the box body 1. The sealing part 34 is located at the bottom of the sunken section 62. The arc-shaped bending structure causes the free end of the latch 3 to bend upward to form the raised section 61, which cooperates with the sunken groove 12 on the top of the cover body 2 to form an operating space that is easy for fingers to hold.

[0051] refer to Figure 4 and Figure 5 As shown, the edge of the cover 2 has an outwardly extending pressure portion 21. This pressure portion 21 is an important structure that is linked with the latch 3. It is a plate-like body that extends laterally outward from the edge of the cover 2 and corresponds to the position of the pressing portion 33 of the latch 3. When the latch 3 is flipped in the unlocking direction, the inclined edge of the pressing portion protrusion 331 cuts into the lower part of the pressure portion 21, using the lever principle to lift the cover and achieve assisted opening. In addition, the buckle 52 at the top of the cover 2 is provided on the side wall of the groove 12 of the cover 2, and forms an embedded fastening with the buckle groove 51 of the latch. Together with the sealing device 7 on the edge of the cover 1 and the box 2, a double sealing effect is achieved.

[0052] The cover 2 is also provided with a vent 13, which works in conjunction with the sealing part 34 provided on the latch 3. The sealing part 34 is integrally formed on the arc-shaped part 62 of the latching part 32. The sealing part 34 is made of flexible materials such as silicone and is integrally formed with the latch 3 through composite injection molding, and the outer surface is arc-shaped. When the latch 3 is in the latched state: the sealing part 34 tightly covers the vent 13 to prevent outside air from entering and internal odors from escaping; when the latch 3 is in the unlocked state: the latch rotates and drives the sealing part 34 to disengage from the vent 13, forming a venting channel, balancing the air pressure inside and outside the box, and eliminating the "negative pressure resistance" when opening the cover.

[0053] refer to Figure 3 As shown, the two opposite sides of the box body 1 are respectively provided with hinge seats 8 for hinged connection of the rotating shaft 4. Each hinge seat 8 is provided with a latch 3, and each latch 3 on each side is provided with an independent pressure-bearing part 21, a groove 12 and a vent hole 13. This symmetrical design ensures that the force is evenly distributed on both sides when the lid is opened, effectively avoiding the problem of lid tilting or food spillage that may be caused by traditional single-sided latches, and improving the safety and convenience of using the storage container.

[0054] The opening principle of the food sealing container in this embodiment is as follows:

[0055] 1. Closing and sealing process

[0056] The lid 2 is placed down, aligned with the box body 1. The bottom of the plate-like part 21 of the lid 2 abuts against the protruding structure of the pressing part 33 of the latch 3. The pressing part 21 pushes the pressing part 33, forcing the latch 3 to automatically rotate around the pivot 4 to the preset engagement angle. Then, the latch 3 is rotated to the engagement position, so that the latch groove 51 on the engagement part 32 extends into the groove 12 of the box body 2 and engages with the buckle 52. At the same time, the sealing part 34 on the engagement part 32 presses against the vent hole 13 to complete the seal. At this time, the latch 3 is in a stable engagement state.

[0057] 2. Unlocking and opening process

[0058] Hook your finger around the raised part 61 of the latch 3's engaging portion 32 and pull the latch 3 outward to rotate it in the unlocking direction. During the rotation of the latch 3, two actions occur simultaneously, as detailed below:

[0059] a) Mechanical lifting: The inclined side of the protruding structure 331 of the extrusion part 33 cuts into the lower part of the pressure part 21, forming a lever with the pivot 4 as the fulcrum, and lifting the cover 2 upward;

[0060] b) Air pressure balance: The sealing part 34 disengages from the vent hole 13, and air enters the box 1 through the vent channel, balancing the internal and external air pressure. The latch 51 and the buckle 52 are completely separated, and the cover 2 is easily opened under the dual action of mechanical force and elimination of air pressure difference, and can also be operated with one hand.

[0061] It should be noted that in the description of this embodiment, the terms "front," "rear," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "installation," "connection," and "linking" 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 direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

Claims

1. A food sealing and storage container, comprising a box body (1), a lid (2), and a lock (3), characterized in that: The latch (3) is hinged to the side of the box (1) via a pivot (4), and the free end of the latch (3) forms a fastening structure (5) with the cover (2) to lock the box (1); The latch (3) is provided with a cam-type pressing part (33) that is offset from the axis of the rotating shaft (4), and the edge of the cover (2) is correspondingly formed with an outwardly extending pressure part (21); When the latch (3) is flipped in the unlocking direction, the pressing part (33) cuts into the lower part of the pressure part (21) along the rotation trajectory, and lifts the cover (2) through the lever principle, so as to realize the mechanical linkage between the action of the latch (3) and the lifting of the cover (2).

2. The food sealing and storage container according to claim 1, characterized in that: The cover (2) is provided with a vent hole (13), and the latch (3) is provided with a sealing part (34) corresponding to the vent hole (13); When the latch (3) is engaged, the sealing part (34) seals and presses against the vent hole (13); When the latch (3) is rotated to the unlocked state, the sealing part (34) separates from the vent hole (13) to form a venting channel.

3. The food sealing and storage container according to claim 2, characterized in that: The latch (3) includes a hinge portion (31) extending vertically in the latched state and a latching portion (32) extending laterally from the top of the hinge portion (31) toward the inside. The pressing portion (33) is formed at the bottom of the hinge portion (31). The latching structure (5) is located between the latching portion (32) and the cover (2).

4. The food sealing and storage container according to claim 1, characterized in that: The extrusion part (33) is a protruding structure with a triangular cross-section, and the pressure-bearing part (21) is a plate-shaped body that extends laterally outward from the edge of the cover (2); When the latch (3) is in the unlocked flipped state, the pressing part (33) abuts against the bottom of the plate-shaped body and lifts the cover (2) to detach it; When the cover (2) is closed, the bottom of the plate-shaped body abuts against the pressing part (33), causing the latch (3) to automatically flip to the preset fastening angle.

5. The food sealing and storage container according to claim 1, characterized in that: The fastening structure (5) includes A buckle groove (51) is provided at the free end of the buckle (3); A buckle (52) is provided on the top of the cover (2); The buckle (52) and the buckle groove (51) form a snap-fit ​​engagement that can be fixed or separated.

6. The food sealing and storage container according to claim 5, characterized in that: The top of the cover (2) has a recessed groove (12), the buckle (52) is formed on the side wall of the groove (12), and the buckle groove (51) of the latch (3) extends into the groove (12) to form an embedded fastening structure (5) with the buckle (52).

7. The food sealing and storage container according to claim 2, characterized in that: The sealing part (34) is made of flexible material and is integrally formed with the buckle (3) through composite injection molding; The sealing part (34) is arc-shaped and seals the vent hole (13) by pressing the arc-shaped surface.

8. The food sealing and storage container according to claim 3, characterized in that: The fastening part (32) has an integrally formed arc-shaped bending structure (6), which includes a raised section (61) extending towards the free end and a sunken section (62) protruding towards the box body (1), and the sealing part (34) is disposed at the bottom of the sunken section (62).

9. The food sealing and storage container according to claim 6, characterized in that: The box body (1) has a pair of latches (3) symmetrically arranged on both sides, and the corresponding grooves (12) and pressure-bearing parts (21) are arranged in the corresponding positions.

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