A food container

Abstract

The present invention discloses a food container, and relates to the technical field of food packaging. The food container comprises a middle cover, a bottle body, a first sealing structure and a buckle structure, wherein the buckle structure comprises at least one anti-pull buckle and at least one anti-pull buckle ring, wherein: the first sealing structure is arranged between the middle cover and the bottle body; the anti-pull buckle is arranged on the inner side wall of the middle cover along the circumferential direction; the anti-pull buckle ring is arranged on the outer side wall of the bottle body along the circumferential direction; when the middle cover is buckled on the bottle body, the anti-pull buckle ring cooperates with the anti-pull buckle. This embodiment can prevent the middle cover and the bottle body from being easily pulled apart, and improve the airtightness of the food container.

Description

Technical Field

[0001] The invention relates to the technical field of food packaging, and in particular to a food container. Background Art

[0002] Currently, granular foods or medicines are mostly packed in bottles, such as chewing gum or candy.

[0003] For snap-fit ​​bottles, the top of the bottle is open, and the bottle body and the cap are usually connected by a single-layer buckle. The buckle and the snap ring are both single-layer sharp-angled annular protrusions. After pressing down, the buckle snaps into the lower side of the snap ring. Although the single-layer buckle has the characteristics of simple process structure and easy production and manufacturing. However, this buckle is easy to open and has poor stability. Even if the buckle and the snap ring are complete rings, it is still easy to open with a little force. During transportation or due to human factors, it may cause product spillage or loss. In addition, its airtightness is poor and dust and other impurities are easy to enter. Some companies use side seals to solve problems such as product spillage or theft and loss, but this method has a complicated production process and is not conducive to production and use.

[0004] For screw-cap bottles, the opening is usually large. When people consume food or medicine in the bottle, they need to reach into the bottle to take it out, or pour out the food or medicine. This can easily contaminate the food or medicine that is taken out / not taken out, which is unhygienic and difficult to ensure the preservation quality. In addition, there is no anti-pull and anti-loss function, which can easily lead to product loss problems in the subsequent logistics and sales process. Summary of the invention

[0005] In order to solve the problems in the prior art that containers have poor airtightness, poor structural stability, products in the containers are easily stolen, and untaken food or medicines are easily contaminated, the present invention provides a food container that can prevent a middle cover and a bottle body from being easily pulled apart, improve the airtightness of the food container, prevent the product in the bottle from being contaminated, extend the shelf life of the product, and improve the storage quality of the product.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A food container comprises a middle cover, a bottle body, a first sealing structure and a buckle structure, wherein the buckle structure comprises at least one anti-pull buckle and at least one anti-pull snap ring, wherein: the first sealing structure is arranged between the middle cover and the bottle body; the anti-pull buckle is circumferentially arranged on the inner side wall of the middle cover; the anti-pull snap ring is circumferentially arranged on the outer side wall of the bottle body; when the middle cover is buckled on the bottle body, the anti-pull snap ring cooperates with the anti-pull buckle.

[0008] Through the first sealing structure and the snap structure, the middle cover and the bottle body can form a good snap fit and sealing effect, effectively preventing the middle cover and the bottle body from being easily pulled apart, ensuring the problem of product leakage that may occur in subsequent links such as transportation; at the same time, further improving the sealing and stability of the food container.

[0009] Optionally, the food container further comprises an upper cover and a second sealing structure, wherein: the second sealing structure is arranged between the upper cover and the middle cover; the upper cover is connected to the middle cover; wherein the connection method comprises belt connection, snap-fit ​​or screwing.

[0010] The upper cover and the second sealing structure can further ensure the airtightness of the food container, especially the airtightness of the upper cover and the middle cover, to prevent the loss of airtightness after the container is opened for the first time to take out the product in the container, and prevent the product from being easily contaminated or deteriorated.

[0011] Optionally, an inner buckle is provided at the inner lower end of the upper cover; and an outer buckle cooperating with the inner buckle is provided at the outer side of the middle cover.

[0012] By the cooperation between the inner buckle and the outer buckle, the upper cover can be temporarily fixed on the middle cover, and the opening and closing of the upper cover is convenient.

[0013] Optionally, an opening brim is provided at the lower end of the outer side of the upper cover; an opening concave surface is provided at the outer side of the middle cover; when the upper cover is pressed onto the middle cover, the opening concave surface is located below the opening brim.

[0014] The opening brim and the opening concave surface can adapt to the shape of the fingertips, making it easy to push the upper cover off the middle cover with fingers.

[0015] Optionally, the second sealing structure includes an inner tongue of the upper cover and an outer sealing ring of the bottle cap, wherein: the inner tongue of the upper cover is arranged at the inner top of the upper cover, and the inner tongue of the upper cover is annular; the outer sealing ring of the bottle cap is arranged at the edge of the top opening of the middle cover; when the upper cover is buckled on the middle cover, the inner tongue of the upper cover fits with the outer sealing ring of the bottle cap.

[0016] The upper cover is connected to the middle cover, and through the cooperation between the inner tongue of the upper cover and the outer sealing ring of the bottle cover, when there is a sealing sheet at the opening of the middle cover, the opening of the middle cover is further protected and the airtightness of the food container is improved. Even after the one-time sealing sheet of the bottle mouth is opened, the second sealing structure can still keep the product sealed well.

[0017] Optionally, the first sealing structure includes an inner tongue of the middle cover and an inner ring for sealing the bottle mouth, wherein: the inner tongue of the middle cover is arranged at the inner upper part of the middle cover, and the inner tongue of the middle cover is annular; the inner ring for sealing the bottle mouth is arranged at the bottle mouth of the bottle body; when the middle cover is buckled on the bottle body, the inner tongue of the middle cover fits with the inner ring for sealing the bottle mouth.

[0018] When the middle cover is buckled with the bottle body, the inner tongue of the middle cover fits with the inner sealing ring of the bottle mouth, which further improves the airtightness of the food container, especially the airtightness of the middle cover and the bottle body.

[0019] Optionally, the buckle structure also includes at least one anti-falling buckle and at least one anti-falling buckle ring, wherein: the anti-falling buckle ring is arranged on the inner side wall of the bottle mouth sealing inner ring; the anti-falling buckle is arranged on the outer side wall of the inner tongue of the middle cover; when the middle cover is buckled on the bottle body, the anti-falling buckle ring cooperates with the anti-falling buckle.

[0020] The anti-falling clamp ring and the anti-falling buckle are located on the first sealing structure. The cooperation between the anti-falling clamp ring and the anti-falling buckle further improves the airtightness of the first sealing structure. At the same time, the anti-falling buckle and the anti-falling clamp ring arranged on the first sealing structure further improve the overall sealing and stability of the food container, increase the difficulty of opening the middle cover, enhance the stability of the product structure, and avoid product omission in subsequent links such as transportation.

[0021] Optionally, the buckle structure also includes at least one anti-falling buckle and at least one anti-falling buckle ring, wherein: the anti-falling buckle ring is arranged on the outer side wall of the bottle mouth sealing inner ring; the anti-falling buckle is arranged on the inner side wall of the inner tongue of the middle cover; when the middle cover is buckled on the bottle body, the anti-falling buckle ring cooperates with the anti-falling buckle.

[0022] The anti-falling clamp ring and the anti-falling buckle are located on the first sealing structure. The cooperation between the anti-falling clamp ring and the anti-falling buckle further improves the airtightness of the first sealing structure. At the same time, the anti-falling buckle and the anti-falling clamp ring arranged on the first sealing structure further improve the overall sealing and stability of the food container, increase the difficulty of opening the middle cover, enhance the stability of the product structure, and avoid product omission in subsequent links such as transportation.

[0023] Optionally, the anti-drop buckle includes at least a first anti-drop buckle and a second anti-drop buckle, and the anti-drop snap ring includes at least a first anti-drop snap ring and a second anti-drop snap ring, wherein: when the middle cover is buckled onto the bottle body, the first anti-drop buckle is engaged with the first anti-drop snap ring, and the second anti-drop buckle is engaged with the second anti-drop snap ring.

[0024] The multi-layer buckle structure makes it difficult for the middle cover to be opened after being buckled with the bottle body, thereby preventing the product in the food container from being lost.

[0025] The first anti-slip buckle and / or the second anti-slip buckle are annular, semi-annular, arc-shaped or discontinuous protrusions or dots; the first anti-slip ring and / or the second anti-slip ring are directly protruded, smoothly protruded or relatively protruded annular, semi-annular, arc-shaped or discontinuous protrusions or dots.

[0026] Annular, semi-annular, arc-shaped or discontinuous protrusions or dots have greater flexibility and can meet various needs in real life; in addition, pressing the bottle body at the arc-shaped or semi-annular notch or directly applying force, and applying a relatively small force (compared with the place without a notch) can help open the middle cover and achieve emergency opening when necessary.

[0027] Optionally, the anti-pull buckle includes at least a first anti-pull buckle and a second anti-pull buckle, and the anti-pull snap ring includes at least a first anti-pull snap ring and a second anti-pull snap ring, wherein: when the middle cover is buckled on the bottle body, the first anti-pull buckle is engaged with the first anti-pull snap ring, and the second anti-pull buckle is engaged with the second anti-pull snap ring.

[0028] The multi-layer buckle structure can achieve a good snap-fitting effect, so that the middle cover is not easy to be opened after being snapped with the bottle body, thereby preventing the loss of the product in the food container. Furthermore, the multi-layer buckle structure cooperates with the anti-drop-off buckle and the anti-drop-off buckle to form an effect that the middle cover, the inner tongue of the middle cover, the inner ring of the bottle mouth seal, and the bottle body are all tightly combined and effectively and firmly snapped, further improving the overall sealing and stability, and enhancing the technical effect of preventing the container from being pulled apart.

[0029] Optionally, the first anti-pull buckle and / or the second anti-pull buckle are annular, semi-annular, arc-shaped or discontinuous protrusions or dots; the first anti-pull snap ring and / or the second anti-pull snap ring are directly protruded, smoothly protruded or relatively protruded annular, semi-annular, arc-shaped or discontinuous protrusions or dots.

[0030] Annular, semi-annular, arc-shaped or discontinuous protrusions or dots have greater flexibility and can meet various needs in real life; in addition, pressing the bottle body at the arc-shaped or semi-annular notch or directly applying force, and applying a relatively small force (compared with the place without a notch) can help open the middle cover and achieve emergency opening when necessary.

[0031] Optionally, the upper side of the first anti-pull snap ring and / or the second anti-pull snap ring is a trapezoid with a smooth transition, and the first anti-pull snap ring and / or the second anti-pull snap ring are elastic; and / or the first anti-pull snap ring and the second anti-pull snap ring have a downward tip or a hook.

[0032] The gently transitioning trapezoid can undergo elastic deformation in the direction of the applied force, so that the middle cover can be smoothly buckled onto the bottle body, and when opening, it can buffer the impact force caused by sudden opening after excessive force, preventing the middle cover or the bottle body from being thrown out or other accidents. The pointed end or the hook can increase the sealing and stability, and inhibit displacement when the middle cover is pulled upward.

[0033] Optionally, the outer wall of the bottle body is also provided with a slot, and one or more layers of the anti-pull buckle have intermittent protrusions or dots, wherein: the slot is located below the anti-pull buckle ring; when the middle cover is buckled on the bottle body, the slot accommodates the protrusions or dots of the anti-pull buckle.

[0034] A downward force is applied to the middle cover, and after the anti-pull buckle passes downward through the anti-pull buckle ring, the protrusion or dot of the anti-pull buckle is stuck in the slot. On the basis of limiting the up and down displacement of the middle cover by the anti-pull buckle and the anti-pull buckle ring, the circumferential rotation of the middle cover can be limited, so that the middle cover and the bottle body are also engaged in the circumferential direction, further increasing the difficulty of opening the middle cover, and achieving the technical effect of preventing opening, loss or removal of the product in the bottle.

[0035] Optionally, the buckle structure also includes a circumferential buckle, and one or more layers of the anti-pull buckle are discontinuous protrusions or dots, wherein: the circumferential buckle is arranged below the anti-pull buckle ring, and the circumferential buckle is a discontinuous protrusion or dot; when the middle cover is buckled on the bottle body, the anti-pull buckle is engaged with the circumferential buckle.

[0036] A downward force is applied to the middle cover, and after the anti-pull buckle passes downward through the anti-pull buckle ring, the protrusion or dot of the anti-pull buckle can fit with the circumferential buckle, be stuck between the circumferential buckles or turn into the circumferential buckle. For example: if the circumferential buckle is a protrusion or dot corresponding to the number of protrusions or dots of the anti-pull buckle, the protrusion or dot of the circumferential buckle can limit the circumferential displacement of the anti-pull buckle on one side; if the number of protrusions or dots of the circumferential buckle is twice the number of protrusions or dots of the anti-pull buckle, one protrusion or dot of the anti-pull buckle fits between the protrusions or dots of two circumferential buckles, and the circumferential displacement of the anti-pull buckle is limited by the two protrusions or dots of the circumferential buckle; if the circumferential buckle is a zigzag shape pointing upward or downward, the anti-pull buckle can be a protrusion or dot, wherein the protrusion can be a zigzag shape, which matches the zigzag shape of the circumferential buckle. The circumferential rotation of the middle cover is limited by the circumferential buckle, so that the middle cover and the bottle body are also engaged in the circumferential direction, which further increases the difficulty of opening the middle cover and achieves the technical effect of preventing opening, loss or removal of the product in the bottle.

[0037] When the anti-pull snap ring is multi-layered, the clamping groove or the circumferential buckle can be arranged below any one or more layers of the anti-pull snap ring to cooperate with the anti-pull buckle.

[0038] One embodiment of the above invention has the following advantages or beneficial effects:

[0039] 1. The anti-pull snap ring cooperates with the anti-pull snap buckle to form the effect of the middle cover snapping on the bottle body, preventing the middle cover and the bottle body from being easily pulled apart;

[0040] 2. When a buckle structure of an anti-pull buckle ring and an anti-pull buckle and a buckle structure of an anti-drop buckle ring and an anti-drop buckle are provided, both sets of buckle structures play a role in preventing opening, and the two sets of buckle structures cooperate with each other. Each set of buckle structures can be a multi-layer and multi-dimensional buckle, which improves the stability of the food container and increases the difficulty of opening;

[0041] 3. After the middle cover is buckled onto the bottle body, it can limit the vertical movement of the middle cover and the bottle body, and at the same time limit or even eliminate the horizontal displacement; it also increases the difficulty of opening, avoiding the loss of the product in the bottle;

[0042] 4. When opening the middle cover, it is necessary to operate horizontally and vertically. If you do not understand the internal buckle structure type, it is extremely difficult to open the middle cover. This will further improve the stability of the combination of the middle cover and the bottle body, increase the strength and difficulty required to open the food container, and prevent problems such as product loss;

[0043] 5. The anti-pull buckle is set to an arc-shaped or semi-circular buckle. When the middle cover needs to be opened, it can be opened forcefully from the arc-shaped or semi-circular notch;

[0044] 6. The upper cover has dust and pollution prevention functions. The upper cover and the middle cover are connected by means of belt connection, buckle or screw connection to prevent the upper cover from falling or losing;

[0045] 7. The cooperation of the two sets of sealing structures can ensure the airtightness of the food container; at the same time, the cooperation of the first sealing structure and the buckle structure makes the food container of the present invention have excellent sealing and stability, and plays a good role in protecting the product in the container;

[0046] 8. When the upper cover and the middle cover are connected by the connecting belt, the upper cover and the middle cover form an integral structure, thereby preventing the upper cover from falling or being lost;

[0047] 9. The upper cover can be temporarily fixed on the middle cover by the cooperation of the inner buckle and the outer buckle. At this time, the opening concave surface is located below the opening brim, and the opening brim and the opening concave surface can adapt to the shape of the fingertip, so that the upper cover can be pushed up from the middle cover with fingers.

[0048] The top opening of the bottle body of the present invention is used for filling products. After the filling is completed, the middle cover is buckled onto the bottle body. The anti-pull buckle and the anti-pull buckle ring, the anti-drop buckle and the anti-drop buckle ring are not easy to open after being combined, so as to prevent omission, loss or theft during subsequent transportation and sales. After the consumer purchases the complete product, the product can be obtained by opening the disposable sealing sheet on the upper cover. The upper cover can ensure that the consumer can continue to store the product after opening it, and prevent dust and pollution. In addition, the present invention can achieve sealing between the middle cover and the bottle body by cooperating the inner tongue of the upper cover with the outer sealing ring of the bottle cap, and the inner tongue of the middle cover with the inner sealing ring of the bottle mouth, thereby improving the airtightness of the food container. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 A schematic diagram of a food container provided by an embodiment of the present invention Figure 1 ;

[0050] Figure 2 A schematic diagram of a food container provided by an embodiment of the present invention Figure 2 ;

[0051] Figure 3 is a side view of a food container provided by an embodiment of the present invention;

[0052] Figure 4 is a cross-sectional view of a food container provided by an embodiment of the present invention;

[0053] Figure 5a yes Figure 4 A zoom in Figure 1 ;

[0054] Figure 5b yes Figure 4 A zoom in Figure 2 ;

[0055] Figure 6a yes Figure 4 Enlargement of point B in the middle Figure 1 ;

[0056] Figure 6b yes Figure 4 Enlargement of point B in the middle Figure 2 ;

[0057] Figure 7 Schematic diagram of a bottle body of a food container provided by an embodiment of the present invention Figure 1 ;

[0058] Figure 8 Schematic diagram of a bottle body of a food container provided by an embodiment of the present invention Figure 2 ;

[0059] Fig. 9 is a schematic diagram of the upper part of a bottle body of a food container provided by an embodiment of the present invention;

[0060] Fig.10 The upper cover and the middle cover of a food container provided by the embodiment of the present invention are schematic diagrams. Figure 1 ;

[0061] Fig.11 The upper cover and the middle cover of a food container provided by the embodiment of the present invention are schematic diagrams. Figure 2 ;

[0062] Fig.12 The upper cover and the middle cover of a food container provided by the embodiment of the present invention are schematic diagrams. Figure 3 ;

[0063] Fig.13 Schematic diagram of a middle cover of a food container provided by an embodiment of the present invention Figure 1 ;

[0064] Fig.14 Schematic diagram of a middle cover of a food container provided by an embodiment of the present invention Figure 2 ;

[0065] Fig.15 Schematic diagram of a middle cover of a food container provided by an embodiment of the present invention Figure 3 .

[0066] In the figure,

[0067] 1-upper cover; 11-inner tongue of upper cover; 12-opening brim; 13-inner buckle; 2-middle cover; 21-anti-pull buckle; 211-first anti-pull buckle; 212-second anti-pull buckle; 22-bottle cap sealing outer ring; 23-inner tongue of middle cover; 24-disposable sealing sheet; 25-pull ring; 26-outer buckle; 27-opening concave surface; 28-anti-falling buckle; 281-first anti-falling buckle; 282-second anti-falling buckle; 3-bottle body; 31-anti-pull buckle; 311-first anti-pull buckle; 312-second anti-pull buckle; 32-bottle mouth sealing inner ring; 33-anti-falling buckle; 331-first anti-falling buckle; 332-second anti-falling buckle; 34-groove; 35-card slot; 36-circumferential buckle; 4-connecting belt. DETAILED DESCRIPTION

[0068] The following is a description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, including various details of the embodiments of the present invention to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present invention. Similarly, for clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0069] like Figure 1 As shown, a food container provided by an embodiment of the present invention mainly includes: a middle cover 2, a bottle body 3, a first sealing structure and a buckle structure. Among them, the inner side wall of the middle cover 2 is circumferentially provided with at least one anti-pull buckle 21, and the outer side wall of the bottle body 3 is circumferentially provided with at least one anti-pull snap ring 31. The anti-pull buckle 21 and the anti-pull snap ring 31 can cooperate to form the effect that the middle cover 2 is buckled on the bottle body 3, and the middle cover 2 and the bottle body 3 are firmly and tightly connected, so as to prevent the middle cover 2 and the bottle body 3 from being easily pulled apart. The first sealing structure can be arranged between the middle cover 2 and the bottle body 3, and the first sealing structure can ensure the airtightness of the food container. Through the first sealing structure and the buckle structure, the middle cover 2 and the bottle body 3 can form a good buckle and sealing effect, effectively preventing the middle cover 2 and the bottle body 3 from being easily pulled apart, and ensuring the problem of product omission that may occur in subsequent links such as transportation; at the same time, the airtightness and stability of the food container are further improved.

[0070] It should be noted that the number of anti-pull buckles 21 and anti-pull snap rings 31 can be set according to actual needs, and the number of anti-pull buckles 21 and the number of anti-pull snap rings 31 can be different, that is, it can be set to a one-to-one matching multi-layer anti-pull buckle 21 and anti-pull snap rings 31 (the number of anti-pull buckles 21 is equal to the number of anti-pull snap rings 31), or it can be set to at least one anti-pull buckle 21 corresponding to multiple anti-pull snap rings 31 (the number of anti-pull buckles 21 is less than the number of anti-pull snap rings 31), and it can also be set to at least one anti-pull snap ring 31 corresponding to multiple anti-pull buckles 21 (the number of anti-pull buckles 21 is more than the number of anti-pull snap rings 31). When the anti-pull buckle 21 and the anti-pull snap rings 31 are matched one by one, the buckle of the middle cover 2 and the bottle body 3 is stable. When the anti-pull buckle 21 corresponds to multiple anti-pull snap rings 31, the anti-pull buckle 21 passes through multiple anti-pull snap rings 31 during the opening process, which increases the difficulty of opening.

[0071] like Figure 2-4 As shown, as an optional embodiment, a food container provided by an embodiment of the present invention may include: an upper cover 1, a middle cover 2, a bottle body 3, a first sealing structure, a second sealing structure and a buckle structure. Among them, the first sealing structure may be arranged between the middle cover 2 and the bottle body 3, and the first sealing structure may include a middle cover inner tongue 23 arranged at the inner upper part of the middle cover 2 and a bottle mouth sealing inner ring 32 arranged at the bottle mouth of the bottle body 3. The second sealing structure may be arranged between the upper cover 1 and the middle cover 2, and the first sealing structure and the second sealing structure may ensure the airtightness of the food container. The second sealing structure may include an upper cover inner tongue 11 arranged at the inner top of the upper cover 1 and a bottle cover sealing outer ring 22 arranged at the edge of the opening of the middle cover 2. The buckle structure may include an anti-pull buckle 21 and an anti-pull buckle ring 31, an anti-drop buckle 28 and an anti-drop buckle ring 33, and a circumferential buckle 36.

[0072] The upper cover 1 can be set to be dome-shaped, with an open brim 12 provided at its lower outer end, and an inner buckle 13 provided at its lower inner end. The top of the middle cover 2 is provided with an opening, and the shape of the middle cover 2 can be set to gradually converge from the middle to the top, with at least one anti-pull buckle 21 provided on its inner side wall along the circumferential direction, and an outer buckle 26 and an open concave surface 27 provided on its outer side. At least one anti-pull snap ring 31 is provided on the outer side wall of the bottle body 3 along the circumferential direction, and the anti-pull snap ring 31 can also be located at the upper part of the bottle body 3.

[0073] Regarding the connection between the upper cover 1 and the middle cover 2, the connection method may include but is not limited to belt connection, snap connection or screw connection. When the upper cover 1 and the middle cover 2 are connected by the connecting belt 4, the two ends of the connecting belt 4 are respectively connected to the lower end of the upper cover 1 and the middle part of the middle cover 2. The upper cover 1 and the middle cover 2 are connected to form an integral structure, thereby preventing the upper cover 1 from falling or being lost.

[0074] When in use, the middle cover 2 is buckled on the bottle body 3, and the anti-pull snap ring 31 cooperates with the anti-pull snap 21, so that the middle cover 2 is buckled on the bottle body 3 and the middle cover 2 and the bottle body 3 are firmly and tightly connected, so as to prevent the middle cover 2 and the bottle body 3 from being easily pulled apart after the product is produced and filled and the middle cover 2 and the bottle body 3 are buckled. The inner tongue 23 of the middle cover cooperates with the inner ring 32 of the bottle mouth seal to ensure the airtightness of the food container. Food or medicine in the bottle body 3 can be taken in and out through the opening of the middle cover 2, and the opening of the middle cover 2 can be set to only allow a certain amount of food or medicine to pass through, so as to prevent the food or medicine in the bottle from being poured out completely when taking it out. The specific size can be determined according to the purpose of the food container, for example, the diameter of the opening of the middle cover 2 is set to 15mm-25mm. The upper cover 1 can be buckled onto the middle cover 2, and the upper cover 1 can be temporarily fixed on the middle cover 2 by the cooperation of the inner buckle 13 and the outer buckle 26. At this time, the bottle cap sealing outer ring 22 cooperates with the upper cover inner tongue 11, that is, the outer side of the bottle cap sealing outer ring 22 fits with the inner side of the upper cover inner tongue 11 or the inner side of the bottle cap sealing outer ring 22 fits with the outer side of the upper cover inner tongue 11. The cooperation between the upper cover inner tongue 11 and the bottle cap sealing outer ring 22 can ensure the airtightness of the food container; and in the buckled state, the opening concave surface 27 is located below the opening brim 12, and the opening brim 12 and the opening concave surface 27 can adapt to the shape of the fingertips, so that the upper cover 1 can be pushed up from the middle cover 2 with fingers.

[0075] It should be noted that when the connecting belt 4 is used to connect the upper cover 1 and the middle cover 2, the inner buckle 13 and the connecting belt 4 can be set to be symmetrical along the center of the upper cover 1, so that the upper cover 1 can be smoothly buckled on the middle cover 2 in the buckled state, thereby improving the stability of the upper cover 1 and the middle cover 2 after buckling. In addition, the position of the opening concave surface 27 on the middle cover 2 has nothing to do with the position of the inner buckle 13, and the opening concave surface 27 can be set on both sides of the middle cover 2; when the connecting belt 4 is used, the opening concave surface 27 can also be set to be opposite to the center line of the connecting belt 4 along the upper cover 1. In addition, the shape of the upper cover inner tongue 11 and the bottle cap sealing outer ring 22 can correspond to the shape of the opening of the middle cover 2. As a preferred embodiment, the upper cover inner tongue 11 and the bottle cap sealing outer ring 22 are both set to be ring-shaped (including circular ring or square ring, etc.).

[0076] like Figure 4-9 As shown, a bottle body 3 of a food container provided by an embodiment of the present invention has at least one anti-pull snap ring 31 disposed circumferentially on its outer wall, a snap groove 35 and / or a circumferential snap buckle 36 may also be disposed on its outer wall, an anti-drop snap ring 33 may also be disposed on the inner wall of the bottle mouth sealing inner ring 32, and a groove 34 may be disposed at its bottom, and the groove 34 is disposed to facilitate the stacking of food containers, so that the stacked food containers can also remain stable. The anti-pull snap ring 31 and the anti-drop snap ring 33 are used to achieve axial engagement between the middle cover 2 and the bottle body 3, and the snap groove 35 and the circumferential snap buckle 36 are used to achieve circumferential engagement between the middle cover 2 and the bottle body 3.

[0077] It should be noted that the bottle body 3 can be processed by an integrated molding process, or the anti-pull snap ring 31 and the bottle mouth sealing inner ring 32 can be separately set on the bottle body 3. The card groove 35 or the circumferential snap buckle 36 is located below the anti-pull snap ring 31, and the circumferential snap buckle 36 can be an intermittent protrusion or dot, wherein the protrusion can be a broken line shape (the broken line shape is similar to a "7" shape). The anti-pull snap ring 31 can be a direct protrusion, a smooth protrusion, or a ring-shaped, semi-circular, arc-shaped or intermittent protrusion snap ring that is relatively protruding due to the lower depression. At the same time, the upper side of the anti-pull snap ring 31 can be a trapezoid with a smooth transition and have a certain elasticity; the anti-pull snap ring 31 can also be set to have a downward tip or a hook structure. On the one hand, when the middle cover 2 is buckled on the bottle body 3, the elastic deformation of the smoothly transitioned trapezoid in the direction of force can make the middle cover 2 smoothly buckled on the bottle body 3, and the pointed end or the hook can increase the sealing and stability, and suppress the displacement when the middle cover 2 is pulled upward; on the other hand, the upper side is a smoothly transitioned trapezoid, compared with the protrusions on the outer wall of the vertical bottle body in the prior art, after the middle cover 2 is buckled on the bottle body 3, if it is opened upward, the buckle can smoothly transition when passing the highest point, thereby buffering the impact force caused by sudden opening after excessive force, that is, buffering the force of both hands, preventing the middle cover 2 or the bottle body 3 from being thrown out or other accidents.

[0078] like Figure 4-5b As shown in 10-15, a middle cover 2 of a food container provided in an embodiment of the present invention has at least one anti-pull buckle 21 circumferentially arranged on its inner wall, an outward-facing bottle cap sealing outer ring 22 is arranged at its opening, an opening is arranged at its top, a disposable sealing sheet 24 and a pull ring 25 are arranged in the opening, an outer buckle 26 and an opening concave surface 27 are arranged on its outer side, and an anti-fall-off buckle 28 may also be arranged on the outer side wall of the inner tongue 23 of the middle cover.

[0079] It should be noted that the anti-pull buckle 21 can be a buckle with an annular, semi-annular, arc-shaped or intermittent protrusions or dots. The inner tongue 23 of the middle cover is used to cooperate with the bottle mouth sealing inner ring 32 of the bottle body 3. After the middle cover 2 is buckled on the bottle body 3 (i.e., in the buckled state), the outer side of the inner tongue 23 of the middle cover fits with the inner side of the bottle mouth sealing inner ring 32 or the inner side of the inner tongue 23 of the middle cover fits with the outer side of the bottle mouth sealing inner ring 32, thereby ensuring the airtightness of the food container. The pull ring 25 is connected to one end of the disposable sealing sheet 24. The disposable sealing sheet 24 is connected to the opening of the middle cover 2, and the connection between the disposable sealing sheet 24 and the middle cover 2 is provided with a score line or a perforated line (not marked in the figure) to easily separate the disposable sealing sheet 24 from the middle cover 2 when unsealing. If the disposable sealing sheet 24 is still connected to the middle cover 2 after opening the upper cover 1, it means that the food container is not unsealed.

[0080] Continue to see Figure 4-15The embodiment of the present invention adopts a snap structure with a unique shape (i.e., the snap ring and the snap buckle cooperate). As a preferred embodiment, at least two groups of snap rings and snap buckles can be provided, one group is located at the bottom of the middle cover 2 (i.e., the snap buckle structure includes an anti-pull snap ring 31 and an anti-pull snap buckle 21, and the anti-pull snap ring 31 is not provided on the middle cover 2), and the other group is located on the inner tongue 23 of the middle cover (i.e., the snap buckle structure also includes an anti-falling snap buckle 28 and an anti-falling snap ring 33, and the anti-falling snap ring 33 is not provided on the inner tongue 23 of the middle cover), so that the inner wall of the middle cover 2 and the outer wall of the inner tongue 23 of the middle cover are both engaged with the bottle body 3, which has a very good buckling and sealing effect, effectively preventing the middle cover 2 and the bottle body 3 from being easily pulled apart, and ensuring the problem of product omission that may occur in subsequent links such as transportation.

[0081] In addition, through the cooperation of the snap structure and the sealing structure (the inner tongue 11 of the upper cover and the outer sealing ring 22 of the bottle cover and the inner tongue 23 of the middle cover and the inner sealing ring 32 of the bottle mouth), the overall sealing and stability of the food container are further improved. When the middle cover 2 is buckled on the bottle body 3, the anti-pull buckle 21 cooperates with the anti-pull buckle 31 (that is, the anti-pull buckle 21 is buckled under the anti-pull buckle 31), and the anti-falling buckle 28 cooperates with the anti-falling buckle 33 (that is, the anti-falling buckle 28 is buckled under the anti-falling buckle 33). The middle cover 2 is fixed on the bottle body 3 by using the anti-pull buckle 31 and the anti-pull buckle 21, and the anti-falling buckle 28 and the anti-falling buckle 33, and the middle cover inner tongue 23 and the bottle mouth sealing inner ring 32. At this time, the sealing between the upper cover 1 and the middle cover 2, and between the middle cover 2 and the bottle body 3, especially the sealing and stability between the middle cover 2 and the bottle body 3, can be achieved, thereby improving the airtightness of the food container, preventing the product in the bottle from being contaminated, extending the shelf life of the product, and improving the product preservation quality.

[0082] It should be noted that the anti-falling buckles 28 and anti-falling snap rings 33 can also be set as a one-to-one matching multi-layer (the number of anti-falling buckles 28 is equal to the number of anti-falling snap rings 33), or it can be set as at least one anti-falling buckle 28 corresponding to multiple anti-falling snap rings 33 (the number of anti-falling buckles 28 is less than the number of anti-falling snap rings 33), and it can also be set as at least one anti-falling snap ring 33 corresponding to multiple anti-falling buckles 28 (the number of anti-falling buckles 28 is more than the number of anti-falling snap rings 33), so as to further improve the stability of the food container and increase the difficulty of opening.

[0083] As a preferred embodiment, each group of buckle structures can adopt a two-layer design, the anti-pull buckle 21 at least includes the first anti-pull buckle 211 and the second anti-pull buckle 212, the anti-pull snap ring 31 at least includes the first anti-pull snap ring 311 and the second anti-pull snap ring 312, and / or the anti-drop buckle 28 at least includes the first anti-drop buckle 281 and the second anti-drop buckle 282, and the anti-drop snap ring 33 at least includes the first anti-drop buckle 331 and the second anti-drop buckle 332. After the middle cover 2 is buckled on the bottle body 3, the first anti-pull buckle 211 is buckled with the first anti-pull snap ring 311, that is, the first anti-pull buckle 211 is buckled between the first anti-pull snap ring 311. The second anti-pull buckle 212 is engaged with the second anti-pull snap ring 312, that is, the second anti-pull buckle 212 is buckled under the second anti-pull snap ring 312, the first anti-drop buckle 281 is engaged with the first anti-drop buckle 331, that is, the first anti-drop buckle 281 is buckled under the first anti-drop buckle 331, the second anti-drop buckle 282 is engaged with the second anti-drop buckle 332, that is, the second anti-drop buckle 282 is buckled under the second anti-drop buckle 332, to achieve the cooperation between the anti-pull snap ring 31 and the anti-pull buckle 21 and / or the anti-drop buckle 33 and the anti-drop buckle 28, so that the middle cover 2 is tightly buckled on the bottle body 3, thereby preventing the middle cover 2 and the bottle body 3 from being easily pulled apart.

[0084] It should be noted that the anti-pull buckle 21 and / or the anti-drop buckle 28 can be set to be annular, semi-annular, arc-shaped or discontinuous protrusions or dots, and the anti-pull snap ring 31 and / or the anti-drop snap ring 33 can be set to be directly protruding, smoothly protruding or relatively protruding annular, semi-annular, arc-shaped or discontinuous protrusions or dots. That is, the first anti-pull buckle 211, the second anti-pull buckle 212, the first anti-drop buckle 281, the second anti-drop buckle 282, the first anti-pull snap ring 311, the second anti-pull snap ring 312, the first anti-drop snap ring 331 or the second anti-drop snap ring 332 can all be set to be annular, semi-annular, arc-shaped or discontinuous protrusions or dots, wherein the semi-annular shape is specifically a ring with a circumferential angle less than 360 degrees. Furthermore, the first anti-pull buckle 211, the second anti-pull buckle 212, the first anti-slip buckle 281, the second anti-slip buckle 282, the first anti-pull snap ring 311, the second anti-pull snap ring 312, the first anti-slip snap ring 331 or the second anti-slip snap ring 332 may also be different structures (i.e. different shapes), i.e. at least one of them is different in shape from the others, i.e. a variety of methods may be used to achieve the combination of the buckle and the snap ring. At the same time, the first anti-pull snap ring 311, the second anti-pull snap ring 312, the first anti-slip snap ring 331 or the second anti-slip snap ring 332 may be direct protrusions, or may be smooth protrusions or relative protrusions with elasticity. In addition, for a snap ring or buckle, a combination of different shapes may be used, i.e. firstly an annular, semi-annular, arc-shaped or discontinuous protrusion is provided, and then a dot or protrusion is provided on the protrusion to form a buckle. For example, the anti-pull buckle 21 is configured as a ring with dots and line segment protrusions alternately arranged (i.e., dots are added in the middle of the discontinuous protrusions, such as Fig.14 As shown), or the anti-pull buckle 21 is set as a line segment protrusion, and dots are added to the line segment protrusion, such as Fig.15 shown.

[0085] In addition, the arc-shaped, semi-circular first anti-pull buckle 211, the second anti-pull buckle 212, the first anti-slip buckle 281, the second anti-slip buckle 282, the first anti-pull snap ring 311, the second anti-pull snap ring 312, the first anti-slip snap ring 331 and / or the second anti-slip snap ring 332 have greater flexibility. On the one hand, they are implemented as a multi-layer snap structure, which can achieve the technical effect of not being easy to open and prevent loss. On the other hand, when the middle cover 2 and the bottle body 3 must be opened, the bottle body 3 can be pressed at the arc-shaped or semi-circular notch or directly exerted. Since there is no buckle and / or snap ring at the notch or only a single-layer buckle or snap ring exists, a relatively small force (compared with the non-notch) can be applied to open the middle cover 2, realizing the emergency opening function when necessary. This structure, which has both tight and firm engagement and is easy to open when necessary, can meet many needs in real life.

[0086] In addition, when one or more layers of the anti-pull buckle 21 are combined with different shapes, a groove 35 matching the protrusion or dot of the anti-pull buckle 21 can be set below the anti-pull buckle 31 on the bottle body 3. After the middle cover 2 is buckled on the bottle body 3, the middle cover 2 is rotated so that the protrusion or dot of the anti-pull buckle 21 can be snapped into the groove 35, or the buckle position is indicated on the bottle body so that the protrusion or dot of the bottom anti-pull buckle 21 is directly snapped into the groove 35 downward, thereby limiting the circumferential rotation of the middle cover 2, so that the middle cover 2 and the bottle body 3 are also snapped in the circumferential direction, further increasing the difficulty of opening the middle cover, and achieving the technical effect of preventing the product in the bottle from being taken away.

[0087] Furthermore, when one or more layers of the anti-pull buckle 21 are discontinuous protrusions or dots, a circumferential buckle 36 matching the anti-pull buckle 21 can be provided below the anti-pull buckle 31 on the bottle body 3. The circumferential buckle 36 is a discontinuous protrusion or dot. When the middle cover 2 is buckled on the bottle body 3, the middle cover 2 is rotated so that the anti-pull buckle 21 can be rotated to the circumferential buckle 36. The circumferential rotation of the middle cover 2 is limited by the circumferential buckle 36, so that the middle cover 2 and the bottle body 3 are also buckled in the circumferential direction.

[0088] That is, the displacement of the middle cover 2 in the circumferential direction can be limited by structures such as the card slot 35 or the circumferential card buckle 36, and the aforementioned anti-pull card buckle 21, anti-drop card buckle 28, anti-pull snap ring 31, and anti-drop snap ring 33 are combined to form a multi-group, multi-layer, and multi-dimensional snap buckle combination of transverse and longitudinal snap buckles. In the process of pressing the middle cover 2 down onto the bottle body 3, the anti-pull card buckle 21 (or the first anti-pull card buckle 211, the second anti-pull card buckle 212) or the anti-drop snap buckle 28 (or the first anti-drop snap buckle 281, the second anti-drop snap buckle 282) first passes through the circumferentially arranged anti-pull snap ring 31 or anti-drop snap ring 33 to form an axial engagement, and then rotates clockwise or counterclockwise along the circumferential direction, completing the engagement of the circumferential snap buckle under the condition of axial engagement.

[0089] The above methods can all achieve further combination of the buckle and the snap ring in the buckle structure, prevent the middle cover 2 and the bottle body 3 from moving up and down, and limit or even eliminate the displacement in the left and right directions. For example, when the bottle cap needs to be opened, the middle cover 2 needs to be rotated horizontally in the opposite direction and then opened upward, which increases the difficulty of opening and further reduces the loss of the product in the bottle caused by non-human factors such as during transportation. At the same time, manual opening requires horizontal and vertical operations. Without understanding the type and structure of the internal buckle (such as the presence of a semi-ring or arc-shaped gap), it is extremely difficult to open the middle cover, which further improves the stability of the combination of the middle cover and the bottle body, increases the force and difficulty required to open the bottle body, and prevents problems such as product loss.

[0090] In order to further explain the technical idea of ​​the present invention, the technical solution of the present invention is now described in combination with specific application scenarios. Specific embodiment 1

[0092] Assume that a food container is used to hold chewing gum. In the food container, an upper cover inner tongue 11 is provided at the inner top of the upper cover 1, an inner buckle 13 is provided at the inner lower end of the upper cover 1, and an opening brim 12 is provided at the outer end of the upper cover 1; an anti-pull buckle 21 is provided along the circumferential direction of the inner wall of the middle cover 2, a bottle cap sealing outer ring 22 is provided at the outer side of the opening of the middle cover 2, a middle cover inner tongue 23 is provided at the inner upper part of the middle cover 2, and a first anti-slip buckle 281 and a second anti-slip buckle 28 are provided on the outer wall of the middle cover inner tongue 23. 82, a disposable sealing sheet 24 and a pull ring 25 connected together are arranged in the opening of the middle cover 2, and an outer buckle 26 and an opening concave surface 27 are arranged on the outer side of the middle cover 2; three anti-pull snap rings 31 and a card groove 35 are arranged circumferentially on the upper part of the outer wall of the bottle body 3, and the card groove 35 is located below the anti-pull snap ring 31, and the bottle mouth of the bottle body 3 is provided with an inward bottle mouth sealing inner ring 32, and the inner side wall of the bottle mouth sealing inner ring 32 is provided with a first anti-slip snap ring 331 and a second anti-slip snap ring 332, and a groove 34 is arranged at the bottom of the bottle body 3. Among them, the anti-pull snap ring 21 is an annular protrusion arranged circumferentially on the inner side wall of the middle cover 2, and a dot is arranged on the annular protrusion; the first anti-slip snap ring 281, the second anti-slip snap ring 282, the anti-pull snap ring 31, the first anti-slip snap ring 331 and the second anti-slip snap ring 332 are annular, semi-annular, arc-shaped protrusions or dots.

[0093] Before filling the product, keep the disposable sealing sheet 24 connected to the middle cover 2, the upper cover 1 and the middle cover 2 are connected together by the connecting belt 4, and the upper cover 1 is buckled on the middle cover 2 by the inner buckle 13 and the outer buckle 26. At this time, the inner buckle 13 and the outer buckle 26 cooperate to temporarily fix the upper cover 1 on the middle cover 2, and the inner side of the bottle cap sealing outer ring 22 fits with the outer side of the upper cover inner tongue 11. After filling, first cover the upper cover 1 and the middle cover 2 as a whole on the upper part of the bottle body 3, and then press downward with force to make the anti-pull buckle 21 buckle under the bottom anti-pull buckle 31 after passing through three anti-pull buckles 31, the first anti-drop buckle 281 buckles under the first anti-drop buckle 331, and the second anti-drop buckle 282 buckles under the second anti-drop buckle 332, and then rotate the middle cover 2 to make the dot of the anti-pull buckle 21 snap into the slot 35, so that the middle cover 2 is buckled on the bottle body 3 and the circumferential and axial rotations are restricted at the same time. At this time, the outer side of the inner tongue 23 of the middle cover fits with the inner side of the bottle mouth sealing inner ring 32, and the entire bottle body 3, the middle cover 2, and the upper cover 1 are firmly and tightly connected, thereby improving the sealing performance of the food container. Specific embodiment 2

[0095] Assume that a food container is used to hold pills. In the food container, an upper cover inner tongue 11 is provided at the inner top of the upper cover 1, an inner buckle 13 is provided at the inner lower end of the upper cover 1, and an opening brim 12 is provided at the outer end of the upper cover 1; a first anti-pull buckle 211 and a second anti-pull buckle 212 are provided along the circumferential direction on the inner wall of the middle cover 2, a bottle cap sealing outer ring 22 is provided on the outer side of the opening of the middle cover 2, a middle cover inner tongue 23 is provided on the inner upper part of the middle cover 2, and an anti-drop buckle 28 is provided on the inner wall of the middle cover inner tongue 23. A disposable sealing sheet 24 and a pull ring 25 connected together are arranged in the opening of the cover 2, and an outer side of the middle cover 2 is provided with an outer buckle 26 and an opening concave surface 27; a first anti-pull snap ring 311, a second anti-pull snap ring 312 and a circumferential snap ring 36 are circumferentially arranged on the upper part of the outer wall of the bottle body 3, and the circumferential snap ring 36 is located below the second anti-pull snap ring 312; an inward bottle mouth sealing inner ring 32 is arranged at the bottle mouth of the bottle body 3, and an anti-falling snap ring 33 is arranged on the outer side wall of the bottle mouth sealing inner ring 32, and a groove 34 is arranged at the bottom of the bottle body 3. Among them, the second anti-pull buckle 212 is an annular protrusion arranged circumferentially on the inner wall of the middle cover 2, and intermittent protrusions are arranged on the annular protrusion; the first anti-pull buckle 211, the anti-fall-off buckle 28, the first anti-pull buckle ring 311, the second anti-pull buckle ring 312, and the anti-fall-off buckle 33 are annular, semi-annular, arc-shaped protrusions or dots; the circumferential buckle 36 is a downward broken line protrusion.

[0096] Before filling the product, the disposable sealing sheet 24 remains connected to the middle cover 2, the upper cover 1 and the middle cover 2 are connected together by the connecting belt 4, and the upper cover 1 is buckled on the middle cover 2 by the inner buckle 13 and the outer buckle 26. At this time, the inner buckle 13 and the outer buckle 26 cooperate to temporarily fix the upper cover 1 on the middle cover 2, and the outer side of the bottle cap sealing outer ring 22 fits with the inner side of the upper cover inner tongue 11. After filling, first cover the upper cover 1 and the middle cover 2 as a whole on the upper part of the bottle body 3, and then press downward with force to make the first anti-pull buckle 211 buckle under the first anti-pull buckle ring 311, the second anti-pull buckle 212 buckle under the second anti-pull buckle ring 312, and the anti-falling buckle 28 buckle under the anti-falling buckle 33, and then rotate the middle cover 2 to make the discontinuous protrusions on the second anti-pull buckle 212 turn under the circumferential buckle 36 and fit with the circumferential buckle 36, so that the middle cover 2 is buckled on the bottle body 3 and restricts the circumferential and axial directions at the same time. At this time, the inner side of the inner tongue 23 of the middle cover fits with the outer side of the bottle mouth sealing inner ring 32, and the entire bottle body 3, the middle cover 2, and the upper cover 1 are firmly and tightly connected, thereby improving the sealing performance of the food container. Specific embodiment three

[0098] Assume that a food container is used to hold chewing gum. In the food container, an upper cover inner tongue 11 is provided at the inner top of the upper cover 1, an inner buckle 13 is provided at the inner lower end of the upper cover 1, and an opening brim 12 is provided at the outer end of the upper cover 1; a first anti-pull buckle 211 and a second anti-pull buckle 212 are provided along the circumferential direction of the inner wall of the middle cover 2, a bottle cap sealing outer ring 22 is provided at the outer side of the opening of the middle cover 2, a middle cover inner tongue 23 is provided at the inner upper part of the middle cover 2, and a middle cover inner tongue 24 is provided at the inner upper part of the middle cover 2. The outer wall of the bottle body 23 is provided with a first anti-slip buckle 281 and a second anti-slip buckle 282, and the outer side of the middle cover 2 is provided with an outer buckle 26 and an opening concave surface 27; the outer wall of the bottle body 3 is provided with a first anti-pull snap ring 311 and a second anti-pull snap ring 312 along the circumferential direction, the bottle mouth of the bottle body 3 is provided with an inward bottle mouth sealing inner ring 32, the inner side wall of the bottle mouth sealing inner ring 32 is provided with a first anti-slip snap ring 331 and a second anti-slip snap ring 332, and the bottom of the bottle body 3 is provided with a groove 34. Among them, the first anti-pull buckle 211, the first anti-pull buckle 281, the first anti-pull snap ring 311 and the first anti-pull snap ring 331 are annular, semi-annular, arc-shaped protrusions or dots; the second anti-pull buckle 212, the second anti-pull buckle 282, the anti-pull snap ring 31, the second anti-pull snap ring 312 and the second anti-pull snap ring 332 are discontinuous protrusions or dots.

[0099] Before filling the product, the upper cover 1 and the middle cover 2 are buckled together, and the upper cover 1 is buckled on the middle cover 2 through the inner buckle 13 and the outer buckle 26. At this time, the inner buckle 13 and the outer buckle 26 cooperate to temporarily fix the upper cover 1 on the middle cover 2, and the inner side of the bottle cover sealing outer ring 22 fits with the outer side of the upper cover inner tongue 11. After filling, the upper cover 1 and the middle cover 2 are first covered on the upper part of the bottle body 3 as a whole, and then pressed down with force, so that the first anti-pull buckle 211 is buckled under the first anti-pull buckle ring 311, and the first anti-slip buckle 281 is buckled under the first anti-slip buckle 331, so that the middle cover 2 is buckled on the bottle body 3. At this time, the outer side of the middle cover inner tongue 23 fits with the inner side of the bottle mouth sealing inner ring 32, and the entire bottle body 3, the middle cover 2, and the upper cover 1 are firmly and tightly connected, thereby improving the sealing performance of the food container.

[0100] It can be seen from the above description that a food container provided by an embodiment of the present invention has at least the following advantages or beneficial effects:

[0101] 1. Through the first sealing structure and the buckle structure, the middle cover 2 and the bottle body 3 can form a good buckle and seal effect, effectively preventing the middle cover 2 and the bottle body 3 from being easily pulled apart, ensuring the problem of product leakage that may occur in subsequent links such as transportation; at the same time, the sealing and stability of the food container are further improved;

[0102] 2. When the buckle structure of the anti-pull buckle 31 and the anti-pull buckle 21 and the buckle structure of the anti-drop buckle 33 and the anti-drop buckle 28 are provided, both sets of buckle structures play a role in preventing opening, and when the two sets of buckle structures cooperate with each other, the middle cover 2 and the bottle body 3 are buckled more firmly;

[0103] 3. When the anti-pull buckle 21 corresponds to multiple anti-pull buckle rings 31, the anti-pull buckle 21 passes through multiple anti-pull buckle rings 31 during the opening process, which increases the difficulty of opening and prevents the middle cover 2 and the bottle body 3 from being easily pulled apart;

[0104] 4. After the middle cover 2 is buckled onto the bottle body 3, the cooperation between the anti-pull buckle 21 and the card slot 35, and / or the cooperation between the anti-pull buckle 21 and the circumferential buckle 36, can limit the movement of the middle cover 2 and the bottle body 3 in the vertical direction (axial direction), and limit or even eliminate the displacement in the left and right direction (circumferential direction); and increase the difficulty of opening, so as to avoid the loss of the product in the bottle;

[0105] 5. The added circumferential limiting structure (such as the card slot 35 or the circumferential card buckle 36) can make the middle cover 2 unable to rotate easily or limit the rotation angle. The middle cover 2 needs to be operated horizontally and vertically at the same time during opening. If the type of internal card buckle structure is not known, it is very difficult to open the middle cover 2, which further improves the stability of the combination of the middle cover and the bottle body, increases the strength and difficulty required to open the food container, and prevents problems such as product loss;

[0106] 6. The first anti-pull buckle 211, the second anti-pull buckle 212, the first anti-drop buckle 281, the second anti-drop buckle 282, the first anti-pull snap ring 311, the second anti-pull snap ring 312, the first anti-drop snap ring 331 or the second anti-drop snap ring 332 can be set to one or more of annular, semi-annular, arc-shaped or discontinuous protrusions or dots, and a variety of methods can be used to achieve the combination of buckles and snap rings to achieve different strengths of engagement in the circumferential and axial directions;

[0107] 7. The first anti-pull buckle 211, the second anti-pull buckle 212, the first anti-drop buckle 281, the second anti-drop buckle 282, the first anti-pull snap ring 311, the second anti-pull snap ring 312, the first anti-drop snap ring 331 and the second anti-drop snap ring 332 can be set to different structures to meet various needs in real life;

[0108] 8. When the anti-pull buckle 21 and the anti-pull buckle ring 31 are set to an arc or semi-circular structure, when the middle cover 2 needs to be opened, it can be opened by force from the arc or semi-circular notch position to achieve an emergency opening function when necessary;

[0109] 9. The upper cover 1 has dust and pollution prevention functions. The upper cover 1 and the middle cover 2 are connected by means of belt connection, buckle or screw connection, which can prevent the upper cover 1 from falling or losing;

[0110] 10. The cooperation between the upper cover inner tongue 11 and the bottle cover sealing outer ring 22 and the middle cover inner tongue 23 and the bottle mouth sealing inner ring 32 can ensure the airtightness of the food container and further improve the stability of the food container;

[0111] 11. When the upper cover 1 and the middle cover 2 are connected by the connecting belt 4, the upper cover 1 and the middle cover 2 form an integral structure, thereby preventing the upper cover 1 from falling or being lost;

[0112] 12. The upper cover 1 can be temporarily fixed on the middle cover 2 by the cooperation of the inner buckle 13 and the outer buckle 26. At this time, the opening concave surface 27 is located below the opening brim 12, and the opening brim 12 and the opening concave surface 27 can adapt to the shape of the fingertips, making it easy to push the upper cover 1 off the middle cover 2 with fingers.

[0113] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and simple improvements made to the essential contents of the present invention should be included in the protection scope of the present invention.

Claims

1. A food container, characterized in that: The invention comprises an upper cover (1), a middle cover (2), a bottle body (3), a first sealing structure and a buckle structure, wherein the buckle structure comprises at least one anti-pull buckle (21) and at least one anti-pull buckle ring (31), wherein: An inner lower end portion of the upper cover (1) is provided with an inner buckle (13); an outer side of the middle cover (2) is provided with an outer buckle (26) that cooperates with the inner buckle (13); The first sealing structure is arranged between the middle cover (2) and the bottle body (3); the first sealing structure comprises a middle cover inner tongue (23) and a bottle mouth sealing inner ring (32), wherein: the middle cover inner tongue (23) is arranged at the inner upper part of the middle cover (2), and the middle cover inner tongue (23) is annular; the bottle mouth sealing inner ring (32) is arranged at the bottle mouth of the bottle body (3); when the middle cover (2) is buckled onto the bottle body (3), the middle cover inner tongue (23) is in contact with the bottle mouth sealing inner ring (32); The anti-pull buckle (21) is circumferentially arranged on the inner side wall of the middle cover (2); the anti-pull buckle ring (31) is circumferentially arranged on the outer side wall of the bottle body (3); when the middle cover (2) is buckled onto the bottle body (3), the anti-pull buckle ring (31) cooperates with the anti-pull buckle (21).

2. The food container according to claim 1, characterized in that The food container further comprises a second sealing structure, wherein: The second sealing structure is arranged between the upper cover (1) and the middle cover (2); The upper cover (1) is connected to the middle cover (2); wherein the connection method includes belt connection, buckle connection or screw connection.

3. The food container according to claim 2, characterized in that An open brim (12) is provided at the lower outer end of the upper cover (1); An opening concave surface (27) is provided on the outer side of the middle cover (2); When the upper cover (1) is pressed onto the middle cover (2), the opening concave surface (27) is located below the opening brim (12).

4. The food container according to claim 2, characterized in that The second sealing structure comprises an upper cover inner tongue (11) and a bottle cap sealing outer ring (22), wherein: The upper cover inner tongue (11) is arranged at the inner top of the upper cover (1), and the upper cover inner tongue (11) is annular; The bottle cap sealing outer ring (22) is arranged at the edge of the top opening of the middle cover (2); When the upper cover (1) is buckled onto the middle cover (2), the inner tongue (11) of the upper cover fits with the bottle cap sealing outer ring (22).

5. The food container according to claim 1, characterized in that The buckle structure further comprises at least one anti-drop buckle (28) and at least one anti-drop snap ring (33), wherein: The anti-fall-off clamp ring (33) is arranged on the inner side wall of the bottle mouth sealing inner ring (32); The anti-fall-off buckle (28) is arranged on the outer side wall of the inner tongue (23) of the middle cover; When the middle cover (2) is buckled onto the bottle body (3), the anti-falling clamp ring (33) cooperates with the anti-falling clamp (28).

6. The food container according to claim 1, characterized in that The buckle structure further comprises at least one anti-drop buckle (28) and at least one anti-drop snap ring (33), wherein: The anti-fall-off clamp ring (33) is arranged on the outer side wall of the bottle mouth sealing inner ring (32); The anti-fall-off buckle (28) is arranged on the inner side wall of the inner tongue (23) of the middle cover; When the middle cover (2) is buckled onto the bottle body (3), the anti-falling clamp ring (33) cooperates with the anti-falling clamp (28).

7. The food container according to claim 5 or 6, characterized in that: The anti-drop buckle (28) comprises at least a first anti-drop buckle (281) and a second anti-drop buckle (282), and the anti-drop buckle (33) comprises at least a first anti-drop buckle (331) and a second anti-drop buckle (332), wherein: When the middle cover (2) is buckled onto the bottle body (3), the first anti-slip buckle (281) is engaged with the first anti-slip buckle ring (331), and the second anti-slip buckle (282) is engaged with the second anti-slip buckle ring (332).

8. The food container according to claim 7, characterized in that The first anti-slip buckle (281) and / or the second anti-slip buckle (282) are annular, semi-annular, arc-shaped or discontinuous protrusions or dots; The first anti-slip snap ring (331) and / or the second anti-slip snap ring (332) are directly protruding, smoothly protruding or relatively protruding in an annular, semi-annular, arc-shaped or discontinuous protrusions or dots.

9. The food container according to claim 1, characterized in that The anti-pull buckle (21) comprises at least a first anti-pull buckle (211) and a second anti-pull buckle (212), and the anti-pull snap ring (31) comprises at least a first anti-pull snap ring (311) and a second anti-pull snap ring (312), wherein: When the middle cover (2) is buckled onto the bottle body (3), the first anti-pull buckle (211) is engaged with the first anti-pull buckle ring (311), and the second anti-pull buckle (212) is engaged with the second anti-pull buckle ring (312).

10. The food container according to claim 9, characterized in that The first anti-pull buckle (211) and / or the second anti-pull buckle (212) are annular, semi-annular, arc-shaped or discontinuous protrusions or dots; The first anti-pull snap ring (311) and / or the second anti-pull snap ring (312) are directly protruded, smoothly protruded or relatively protruded in an annular, semi-annular, arc-shaped or discontinuous protrusions or dots.

11. The food container according to claim 10, characterized in that The upper side of the first anti-pull snap ring (311) and / or the second anti-pull snap ring (312) is a trapezoid with a smooth transition, and the first anti-pull snap ring (311) and / or the second anti-pull snap ring (312) are elastic; and / or The first anti-pull snap ring (311) and the second anti-pull snap ring (312) have downward pointed tips or hooks.

12. The food container according to claim 1, characterized in that The outer side wall of the bottle body (3) is further provided with a card slot (35), and one or more layers of the anti-pull buckle (21) have discontinuous protrusions or dots, wherein: The clamping groove (35) is located below the anti-pull clamping ring (31); When the middle cover (2) is buckled onto the bottle body (3), the locking groove (35) accommodates the protrusion or dot of the anti-pull buckle (21).

13. The food container according to claim 1, characterized in that The buckle structure further comprises a circumferential buckle (36), one or more layers of the anti-pull buckle (21) are discontinuous protrusions or dots, wherein: The circumferential buckle (36) is arranged below the anti-pull buckle ring (31), and the circumferential buckle (36) is a discontinuous protrusion or dot; When the middle cover (2) is buckled onto the bottle body (3), the anti-pull buckle (21) is buckled with the circumferential buckle (36).

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