Food packaging containers

Abstract

To provide a food packaging container with a simple structure, a good fit between the lid and the container body, and easy handling. [Solution] The present invention provides a food packaging container including a container body and a lid. The lid has a fitting structure that fits onto the container body, and the fitting structure allows the lid to be detachably fitted onto the container body. The fitting structure has an engaging portion that protrudes outward from the lid and an engaging projection that protrudes inward from the lid, and a contact top is provided on one side of the engaging portion, so that when the lid is fitted onto the container body, the engaging projection comes into contact with the outside edge of the container body and the contact top comes into contact with the inside edge of the container body, causing the edge of the container body to elastically deform within a predetermined range. The food packaging container of the present invention has a simple structure, the fitting between the lid and the container body is strong, and the engagement and disengagement operations are easy.

Description

Technical Field

[0001] The present invention relates to the technical field of food packaging containers, and particularly to food packaging containers.

Background Art

[0002] Food packaging containers are components of food products. Food packaging containers can protect food and prevent damage caused by biological, chemical, and physical external factors during the process of the food being transferred from the production location to the hands of consumers, and may have the function of maintaining the stable quality of the food itself. They can facilitate the consumption of food, and first of all, represent the appearance of the food, attract the consumption image, and have value other than the material cost. Food packaging containers can be classified into metals, glass, paper, plastics, composite materials, etc. according to the packaging materials. Also, food packaging containers can be classified into cans, bottles, packs, bags, rolls, boxes, cases, etc. according to the packaging type. Since the raw material of paper is mainly plant fiber, plant fiber is biodegradable and recyclable. For hygienic reasons, most food packaging containers are disposable. With the increasing environmental awareness of people, the number of paper food packaging containers is increasing.

Summary of the Invention

Problems to be Solved by the Invention

[0003] Conventional technology uses a paper container body for the bottom and a transparent plastic lid for the top, allowing for easy viewing of the food inside the container through the lid, making it suitable for sorting food. However, it is difficult to mold fasteners that fit the lid to the paper container body, and the container body is generally a simple paper box structure. When fitting the lid and container body together, they can be easily closed, but the lid can easily detach from the container body. Therefore, after closing the lid to the container body, it is necessary to secure it with cellophane tape or staples, which is inconvenient for attachment and removal. If it is necessary to adjust the position or amount of food inside the container after securing the lid and container body with cellophane tape and staples, it is difficult to remove the lid. On the other hand, consumers may damage the lid or container body when removing the top lid, and if the food is not consumed in one go, it is inconvenient to handle the damaged lid or container body when repackaging food.

[0004] Therefore, there is a need to provide a food packaging container that has a simple structure, a good fit between the lid and the container body, and is easy to handle.

[0005] The object of the present invention is to provide a food packaging container that has a simple structure, a good fit between the lid and the container body, and is easy to handle. [Means for solving the problem]

[0006] To achieve the above objective, the present invention provides a food packaging container comprising a container body and a lid having a fitting structure that fits into the container body, the lid being detachably fitted to the container body by the fitting structure, the fitting structure comprising an engaging portion protruding outward from the lid, an engaging projection protruding inward from the lid, and a contact top provided on one side of the engaging portion, the lid fitting into the container body, the engaging projection contacting the outer edge of the container body, the contact top contacting the inner edge of the container body, and the edge of the container body being elastically deformed within a predetermined range.

[0007] Preferably, the fitting structure further includes a positioning recess, the positioning recess is recessed and provided inside the lid, the positioning recess guides the fitting of the container body and the lid, and the edge of the container body is positioned within the positioning recess, so that the container body is held in the first state.

[0008] Preferably, the positioning recess includes a first positioning portion and a second positioning portion, the lid fits onto the container body, the first positioning portion abuts against the inner edge of the container body, and the second positioning portion abuts against the outer edge of the container body.

[0009] Preferably, the inner surface of the lid is provided with a positioning projection that protrudes in the direction of engagement with the container body, and the gap between the positioning projection and the inner wall of the lid forms a positioning recess.

[0010] Preferably, a first guide portion for guiding the container body is also provided on the extension of the first positioning portion, thereby enabling the container body to extend into the positioning recess.

[0011] Preferably, the container body is made of paper material and the lid is made of plastic material.

[0012] Preferably, the engaging portion further includes a limiting portion that restricts the container body, the limiting portion forming a dwelling space for the container body to extend between the limiting portion and the abutment top portion, and the lid is fitted onto the container body such that one end of the container body is located within the dwelling space, the inside of the container body abuts against the abutment top portion and the outside of the container body abuts against the limiting portion.

[0013] Preferably, the engaging projection is integrally provided with the lid, and the cross-section of the engaging projection gradually changes from large to small from one end closer to the lid to the other end.

[0014] Preferably, multiple engagement blocks are also arranged inside the lid, and the lid is fitted onto the container body such that the engagement blocks abut against the outer edge of the container body, thereby strengthening the engagement between the container body and the lid.

[0015] Preferably, a bump is provided so as to protrude into the lid, and the bump engages with the inner wall of the lid to form an engagement portion.

[0016] The bump further includes a second guide portion on the side closer to the engagement portion, the second guide portion is located on the extension of the contact top portion, the second guide portion is curved, and the second guide portion causes the container body to extend into the engagement portion.

[0017] Preferably, the lid integrally includes a support sheet and an upper lid, the engaging portion is located between the support sheet and the upper lid, the upper lid is provided with bumps projecting toward the support sheet, the bumps cooperate with the inner wall of the support sheet to form an engaging portion, the upper lid includes a top plate and a plurality of side plates surrounding the periphery of the top plate, the top plate and the plurality of side plates are enclosed in a hollow internal cavity of the support sheet, bumps are positioned between two adjacent side plates, each bump engages with the inner wall of the support sheet to form an engaging portion.

[0018] After adopting the above technical solutions, the food packaging container of the present invention includes a container body and a lid, the container body being used to store food and the lid being used to seal the food inside the container body. The container body is made of paper material, making it environmentally friendly and easily biodegradable. The lid is made of plastic material, making it more robust. Specifically, the lid is provided with a fitting structure that engages with the container body, and this fitting structure makes the lid detachable from the container body. The fitting structure comprises an engaging portion that extends outward in a convex shape from the lid and an engaging projection that extends inward in a convex shape from the lid. That is, the snap portion (engaging portion) protrudes outward in a convex shape from the outside of the lid, and the engaging projection retracts inward in a convex shape from the inside of the lid. A contact top is provided on one side of the engaging portion, and the other side of the engaging portion is a limiting portion, forming a storage space between the limiting portion and the contact top portion into which the container body is inserted. When the lid is fitted onto the container body, the engaging portion abuts against the outside of the rim of the container body, the abutting top abuts against the inside of the rim of the container body, and the limiting portion abuts against the outside of the rim of the container body, causing the rim of the container body to elastically deform within a predetermined range. A second guide portion is also provided on the extension of the abutting top, so that the second guide portion, which has an arc-shaped structure, can guide the container body and extend into the engaging portion. The limiting portion is used to support the container body in a limited manner, and it can be understood that the abutting top and the engaging portion press against the rim of the container body from both the inside and outside sides, causing elastic deformation of the rim of the container body. The elastically deformed container body has a resetting tendency to repel the engaging portion and engaging protrusion, forming a frictional force that prevents the container body from coming off the lid, securely attaching the container body to the lid and preventing it from easily falling off. On the other hand, the lid has numerous engagement blocks (clips) distributed across it, and the lid fits onto the container body so that the engagement blocks abut against the outside edge of the container body, thereby reinforcing the engagement between the container body and the lid. The fitting structure further includes a positioning recess, and a positioning projection is provided on the inner surface of the lid 20 in the fitting direction, and the positioning recess is formed by the gap between the positioning projection and the inner wall of the lid 20. The positioning recess is used to guide the fitting of the container body and the lid, and the edge of the container body is located within the positioning recess, allowing the container body to be held in the first state.The first guide portion of the positioning recess guides the container body to the fitting attachment position, enabling better fitting with the lid. Further, the positioning recess can prevent the container body from being deformed too much with respect to the engaging convex portion and the engaging block, avoiding the container body from deforming inward. The deformed container body may come off the engaging convex portion and the engaging block, and thus can be easily detached from the fixing structure. That is, due to the guiding restriction of the positioning recess, the container body is difficult to deform and can be kept in its original state as much as possible. The positioning recess makes the fitting between the container body and the lid more reliable. The food packaging container of the present invention has a simple structure, reliable fitting between the container body and the lid, and easy fitting and removal operations between the container body and the lid.

Brief Description of the Drawings

[0019] To more clearly explain the technical solutions of the embodiments of the present invention, the attached drawings used in the description of the embodiments will be briefly described below. Clearly, the attached drawings in the following description are some embodiments of the present invention, and those skilled in the art can obtain other attached drawings based on these attached drawings without creative effort.

[0020] [Figure 1] It is a configuration diagram of a food packaging container according to an embodiment of the present invention. [Figure 2] It is an exploded view of the components in FIG. 1. [Figure 3] It is a structural cross-sectional view of the engaging portion and the engaging convex portion in FIG. 1. [Figure 4] It is a structural cross-sectional view of another state in FIG. 3. [Figure 5] It is a structural cross-sectional view of yet another state in FIG. 3. [Figure 6] It is a configuration diagram of the container body in FIG. 2. [Figure 7] It is a cross-sectional view in FIG. 6. [Figure 8] It is a configuration diagram of the lid in FIG. 2. [Figure 9] It is a configuration diagram of the lid at another angle in FIG. 8. [Figure 10] It is a partial configuration diagram of the container body in FIG. 9. [Figure 11] It is a partial cross-sectional view of the positioning recess in FIG. 9. [Figure 12] It is a configuration diagram of a lid body according to another embodiment of the present invention. [Figure 13] It is a configuration diagram in which the food packaging containers of FIG. 1 are stacked. [Figure 14] It is a configuration diagram in which the lid bodies in FIG. 2 are stacked.

Explanation of Reference Numerals

[0021] 100: Food packaging container, 10: Container body, 101: Storage cavity (hollow), 102: Groove, 11: Bottom plate, 12: Side wall, 13: Support portion, 20: Lid body, 201: Upper lid, 2011: Top plate, 2012: Side plate, 202: Support sheet, 203: Internal cavity (hollow), 210: Fitting structure, 21: Engaging portion, 211: Contact top portion, 212: Restricting portion, 22: Engaging convex portion, 23: Positioning convex portion, 231: First guide portion, 24: Engaging block, 25: Bump, 26: Second guide portion, 27: Flange, 28: Positioning recess, 281: First positioning portion, 282: Second positioning portion, 29: Restricting block

Modes for Carrying Out the Invention

[0022] In order to explain the technical content and structural features of the present invention in detail, the embodiments will be combined and further explained together with the accompanying drawings below.

[0023] Referring to Figures 1 to 5, the present invention provides a food packaging container 100 comprising a container body 10 and a lid 20. The container body 10 is used to store food, and the lid 20 is used to seal the food inside the container body 10. The container body 10 can be constructed from paper material, making it environmentally friendly and easy to disassemble. The lid 20 can be constructed from plastic material, making it more robust, and the lid 20 can also be made from a transparent material, allowing for easy viewing of the food inside the container body 10 through the lid 20. The lid 20 is provided with a snap-fit ​​structure (fitting structure) 210 to fit the container body 10, and this fitting structure 210 detachably secures the lid 20 to the container body 10. Specifically, the fitting structure 210 includes an engaging portion 21 that protrudes outward from the lid 20 and an engaging projection 22 that protrudes inward from the lid 20, with a contact top 211 provided on one side of the engaging portion 21. When the lid 20 is fitted onto the container body 10, the engaging projection 22 contacts the outer edge of the container body 10, and the contact top 211 contacts the inner edge of the container body 10, causing the inside of the container body 10 to elastically deform within a predetermined range. Since the container body 10, which has undergone elastic deformation, tends to return to its original shape, it can repel the contact top (countertop) 211 and the engaging projection 22, thereby generating a frictional force between the container body 10, the contact top 211, and the engaging projection 22. This frictional force causes the container body 10 to fit securely into the lid 20. Here, the container body 10 includes a bottom plate 11 and side walls 12, the edge of the container body 10 is located on the side walls 12, and the edge of the container body 10 may be part of the side walls 12. At any suitable position on the container body 10, the container body 10 can be elastically deformed by the multiple side walls 12 cooperating with the engaging portion 21, that is, the entire side walls 12 can be elastically deformed. The preset range is the range in which the deformation of the container body 10 is automatically reset. When the contact top 211 of the engaging portion 21 (snap-in portion) contacts the container body 10 from the inside of the side walls 12 of the container body 10, and the contact top 211 is pressed against the container body 10, the engaging projection 22 contacts the container body 10 from the outside of the side walls 12 of the container body 10.If the engaging projection 22 protrudes too far and comes into excessive contact with the container body 10, the container body 10 will bend and deform irrevocably. Therefore, the alignment of the contact top 211 and the engaging projection 22, as well as the length of the projection, are both within a certain range. In the container body 10, the container body 10 undergoes elastic deformation, generating frictional force, which can automatically reset the deformation of the container body 10. The food packaging container 100 of the present invention, through its fitting structure 210, allows the lid 20 to be detachably fitted to the container body 10, ensuring a secure fit, eliminating the need for auxiliary fixing with transparent tape or staples, making removal easy, and saving steps.

[0024] Referring to Figures 6 to 12, in some arbitrary embodiments, the container body 10 includes a bottom plate 11 and a plurality of side walls 12 installed on the bottom plate 11, the plurality of side walls 12 being installed around the bottom plate 11 to form a storage cavity 101, which is used to store food or other suitable articles. On the other hand, the lid 20 includes a top plate 2011 and a plurality of side plates 2012 surrounding the top plate 2011, the top plate 2011 and the plurality of side plates 2012 may be configured to form an internal cavity 203. The lid 20 also includes a support sheet 202 and a top lid 201, the top lid 201 may extend outward from the support sheet 202, and the top lid 201 includes a top plate 2011 and a plurality of side plates 2012 surrounding the periphery of the top plate 2011. In this embodiment, by making the external shape of the lid 20 substantially the same as the external shape of the container body 10, better fitting can be achieved. When the lid 20 is fitted to the container body 10, the lid 20 covers the storage cavity 101, and the internal cavity (empty space) 203 combines with the storage cavity (empty space) 101, thereby increasing the overall storage space of the food packaging container 100 and allowing food to be placed more effectively. For example, the container body 10 may have a structure with four side walls 12, or a structure with three side walls 12, or a structure with five or six side walls 12. Of course, the container body 10 may also have a structure with any other suitable number of side walls 12. That is, the cross-sectional shape of the container body 10 may be a square, triangle, pentagon, hexagon, star, or other geometric shapes. Therefore, the lid 20 can be any suitable shape that fits the container body 10. In other embodiments, the cross-section of the container body 10 may be a non-standard shape, such as circular, elliptical, or cloud-shaped.

[0025] In some circumstances, as shown in Figures 1, 2 and 8 to 12, the lid 20 further includes a positioning recess 28, which is recessed within the lid 20. The lid 20 guides the edge of the container body 10 by the positioning recess 28, so that the container body 10 and the lid 20 fit together. The edge of the container body 10 is located within the positioning recess 28, and the container body 10 is held in a first position. That is, when the lid 20 is fitted onto the container body 10, the side walls 12 of the container body 10 are positioned within the positioning recess 28. Specifically, the positioning recess 28 includes a first positioning portion 281 and a second positioning portion 282. When the lid 20 fits onto the container body 10, the first positioning portion 281 abuts against the inner edge of the container body 10, and the second positioning portion 282 abuts against the outer edge of the container body 10. On the other hand, a first guide portion 231 is provided on the extension of the first positioning portion 281 for further guiding the container body 10, and the container body 10 enters the positioning recess 28 by the first guide portion 231. It is understood that the first positioning portion 281 and the first guide portion 231 are located on the positioning projection 23. Of these, the positioning projection 23 is provided as a convex projection extending from the inner wall of the lid 20, and is provided in substantially the same direction as the convex projection of the bump 25 inside the lid 20. The positioning projection 23 may also project convexly from the top plate 2011 toward the side plate 2012. In some embodiments, the positioning projection 23 is installed on the top lid 201 and projects toward the support sheet 202 within the internal cavity 203, and the positioning projection 23 is connected to the support sheet 202. The inner walls of the support sheet are combined to form a positioning recess 28, and the container body 10 is held in a first state by the positioning recess 28. The first state is when the container body 10 retains its general shape before being fitted with the lid 20, and there is no excessive deformation inside. In this embodiment, the positioning recess 28 is used to guide the side wall 12 of the container body 10. When the container body 10 is fitted with the lid 20, the engaging projection 22 and the contact top 211 on the lid 20 come into contact with both sides of the side wall 12 of the container body 10, generating frictional force on both sides of the side wall 12, and the container body 10 is firmly fitted into the engaging portion 21.At the same time, multiple engagement blocks 24 are provided on the inner wall of the lid 20, and both the engagement blocks 24 and the engagement protrusions 22 abut against the outside of the container body 10. If they abut excessively against the side wall 12 of the container body 10 for a long period of time, the container body 10 is likely to deform inward, which not only affects the appearance of the container body 10 but also makes it easier for the deformed container body 10 to detach from the lid 20. In addition, the middle part of the top lid 201 serves as a base for the container body 10, and the lid 20 serves as a base for the container body 10, which affects the appearance of the container body 10 and makes it easier for the deformed container body 10 to detach from the lid 20. Positioning protrusions 23 are provided in the middle part of the top lid 201 to form a positioning recess 28. The positioning recess 28 is for accommodating the side wall 12 of the container body 10, and by guiding and restricting the positioning recess 28, the side wall 12 makes it difficult for the container body 10 to deform, and the container body 10 can be kept in its original state as much as possible. Furthermore, the container body 10 is recessed inward when the engaging projection 22 and engaging block 24 abut against each other, and then returns to its original position under the constraints of the contact top 211 and positioning recess 28, allowing the entire container body 10 to flexibly bend and deform back and forth. This elastically deforming structure allows for a more secure fit within the lid 20, making it less prone to shaking, less likely to detach from each other, and resulting in a more robust overall structure.

[0026] Referring to Figures 3 to 5, in some arbitrary embodiments, the engaging portion 21 further includes a restricting portion 212 for restricting the container body 10. The restricting portion 212 is used to restrict and support the container body 10, and it is understood that when the side wall 12 of the container body 10 enters the engaging portion 21, the contact top portion 211 contacts a point on the inside of the container body 10, and the restricting portion 212 supports the container body 10 from the outside, allowing the contact top portion 211 to contact the container body 10 more effectively. Specifically, a dwelling space is formed between the restricting portion 212 and the contact top portion 211 into which the container body 10 is inserted, and the lid 20 is fitted onto the container body 10 such that one end of the container body 10 is located within the dwelling space, with the inside of the container body 10 in contact with the contact top portion 211 and the outside of the container body 10 in contact with the restricting portion 212.

[0027] Referring to Figures 3 to 5 and Figures 8 to 12, in some arbitrary embodiments, the engaging projection 22 is integrally provided with the lid 20, and the engaging projection 22 is tapered such that its cross-section becomes larger from one end to the other of the lid 20. In this case, the engaging projection 22 is located below the engaging portion 21, that is, below the contact top portion 211, and the engaging projection 22 and the contact top portion 211 are misaligned on both the inside and outside sides of the container body 10, allowing them to act better on the container body 10, enabling the container body 10 to deform more elastically, and allowing the container body 10 to fit better into the lid 20. On the other hand, a plurality of engaging blocks 24 are further distributed inside the lid 20, and the configuration of the engaging blocks 24 is substantially the same as the configuration of the engaging projection 22. The lid 20 is fitted onto the container body 10 such that the engaging blocks 24 abut against the outside edge of the container body 10, and the engaging blocks 24 strengthen the engagement between the container body 10 and the lid 20. To improve the fit between the container body 10 and the lid 20, multiple engaging blocks 24 are provided inside the lid 20 along the circumferential direction, and it is understood that the engaging blocks 24 are located below the engaging portion 21, and may also be located at the same height as the engaging projection 22. The engaging blocks 24 are used to assist the engaging projection 22 in abutting against the container body 10. The engaging blocks 24 and the engaging projection 22 abut (press) against the container body 10 from the outside. To prevent the container body 10 from wobbling within the engaging portion 21, the abutting top 211 abuts against the container body 10 from the inside, ensuring a strong fit and preventing it from easily falling off.

[0028] Referring to Figures 8 to 12, in some arbitrary embodiments, the top plate 2011 within the lid 20 is provided with a bump 25 projecting from the top plate 2011 toward the side plate 2012, the bump 25 cooperating with the inner wall of the side plate 2012 of the lid 20. In some other embodiments, the lid 20 includes an integral support sheet 202 and an upper lid 201, with the engagement portion 21 located between the support sheet 202 and the upper lid 201. Of these, the upper lid 201 faces the support sheet 202. The support sheet 202 is provided with a bump 25 projecting toward the support sheet 202. The bump 25 and the inner wall of the support sheet 202 form the engagement portion 21. The side of the bump 25 near the inner wall of the lid 20 is provided with a contact top 211 for pressing against the container body 10. Below the abutment top portion 211 is the second guide portion 26, which is located on the extension of the abutment top portion 211, and the second guide portion 26 has an arc-shaped structure, which is understood to allow the container body 10 to bend more conveniently into the engagement portion 21. Specifically, the top lid 201 comprises a top plate 2011 and a plurality of side plates 2012 arranged around the top plate 2011, and the top plate 2011 and the plurality of side plates 2012 are arranged to form a hollow internal cavity 203 on the support sheet 202. Bumps 25 are provided between adjacent side plates 2012, and each bump 25 cooperates with the inner wall of the support sheet 202 to form an engagement portion 21. For example, when the lid 20 has a rectangular structure, bumps 25 are provided at each of the four corners of the lid 20, forming four engaging parts 21 at the four corners, and the four corners of the container body 10 are firmly fitted into the lid 20 by the four engaging parts 21. Of these, the engaging parts 21 can be L-shaped between two adjacent side plates 2012, and corresponding engaging protrusions 22 are provided where the engaging parts 21 are located on different side plates 2012, so that the container body 10 can be fitted more firmly into the lid 20. That is, one engaging part 21 can have multiple contact tops 211 that cooperate with the container body 10, and below each contact top (push top surface) 211, a corresponding engaging protrusion 22 may be provided.

[0029] Referring to Figure 12, in some arbitrary embodiments, the lid 20 has a flat structure. The top plate 2011 extends outward with a plurality of engaging portions 21. In another embodiment, the top plate 2011 extends outward with a plurality of engaging portions 21. The engaging portions 21 extend outward along their circumference, that is, the bumps 25 and positioning projections 23 for forming the engaging portions 21 may be integrally structured and may extend convexly in the direction of fitting with the container body 10. The engaging portions 21 for fitting with the container body 10 may be formed on the circumferential side of the top plate 2011, and in this embodiment, it is understood that the engaging portions 21 and positioning recesses 28 communicate with each other and are integrally structured.

[0030] Referring to Figures 3 to 5 and Figures 8 to 10 and 14, in some arbitrary embodiments, a plurality of limiting blocks 29 are provided protruding from the lid 20 along its circumferential direction. The limiting blocks 29 facilitate stacking of the lids 20. Since the lid 20 is provided with an internal cavity 203, it has a large volume, and space can be saved when stacked. By providing the limiting blocks 29 on the outer circumference of the lid 20, stacked lids 20 can be separated more easily after being stacked. On the other hand, one end of the lid 20 that fits into the container body 10 is provided with a flange 27 that protrudes outward in a convex shape, and this flange 27 makes it easy to separate two stacked lids 20 or to remove the lid 20 from the container body 10.

[0031] Referring to Figures 6, 7, and 13, in some arbitrary embodiments, the side wall 12 is located away from the storage cavity 101. A support portion 13 is installed protruding from one end, and the support portion 13 is used to support the lid 20. The multiple support portions 13 form a groove 102 on the other surface of the bottom plate 11, and this groove 102 allows the container body 10 to be superimposed on the lid 20 of another food packaging container 100. The side wall 12 may be connected to the bottom plate 11, or the side wall 12 and the bottom plate 11 may be integrally formed. When the side wall 12 cooperates with the bottom plate 11, it may be rotated outward to increase the thickness of the side wall 12. This gives the side wall 12 a stronger elastic restoring force. Of the outward-facing side wall 12, the portion protruding from the bottom plate 11 forms a support portion 13 that supports the container body 10, making the overall structure of the container body 10 stable and easy to stack.

[0032] As shown in Figures 1 to 14, the food packaging container 100 of the present invention includes a container body 10 and a lid 20. The container body 10 is used to store food, and the lid 20 is used to seal the food inside the container body 10. The container body 10 is made of paper material, making it environmentally friendly and easy to disassemble. The lid 20 is made of plastic material, resulting in a more robust structure. Specifically, the lid 20 is provided with a fitting structure 210 that fits onto the container body 10, and this fitting structure 210 allows the lid 20 to cooperate with the container body 10 in a detachable manner. The fitting structure 210 includes an engaging portion 21 that extends outward in a convex shape from the lid 20, and an engaging projection 22 that extends inward in a convex shape from the lid 20. That is, the engaging portion 21 protrudes outward from the lid 20, and the engaging projection 22 retracts inward in a convex shape from the lid 20. A contact top portion 211 is provided on one side of the engaging portion 21, and a restricting portion 212 is provided on the other side of the engaging portion 21, forming a accommodating space between the restricting portion 212 and the contact top portion 211 into which the container body 10 is inserted. When the lid 20 is fitted onto the container body 10, the engaging projection 22 contacts the outer edge of the container body 10, the contact top portion 211 contacts the inner edge of the container body 10, and the restricting portion 212 contacts the outer edge of the container body 10, causing the edge of the container body 10 to elastically deform within a predetermined range. A second guide portion 26 is further provided on the extension of the contact top portion 211, and the curved structure of the second guide portion 26 guides the container body 10 to extend into the engaging portion 21. The limiting portion 212 is used to limit the support of the container body 10, and the abutting top portion 211 and engaging projection portion 22 press against the edge of the container body 10 from both the inside and outside sides, causing elastic deformation of the edge of the container body 10. The elastically deformed container body 10 always has a tendency to return to its original shape, and by acting in opposition to the abutting top portion 211 and engaging projection portion 22, it forms a frictional force that prevents the container body 10 from coming off the lid 20, ensuring that the container body 10 fits firmly into the lid 20 and does not easily fall out. On the other hand, a plurality of engaging blocks 24 are provided inside the lid 20, and the lid 20 fits into the container body 10 so that the engaging blocks 24 abut against the side surface of the container body 10, and the outside of the container body is reinforced by the engaging blocks 24, improving the fit between the container body 10 and the lid 20.The fitting structure 210 further includes a positioning recess 28, and the lid 20 is provided with a positioning projection 23 on the inside of the lid 20 so as to project in the direction of engagement with the container body 10, and the gap between the positioning projection 23 and the inner wall of the lid 20 forms the positioning recess 28. The positioning recess 28 guides the container body 10 to engage with the lid 20, and the edge of the container body 10 is located within the positioning recess 28. This holds the container body 10 in a first state. A first guide portion 231 on the positioning recess 28 guides the container body 10 to the first position. The positioning recess 28 can be oriented to an appropriate mounting position for better fitting with the container body 10. Furthermore, the positioning recess 28 is sufficient to avoid inward deformation of the container body 10 due to excessive deformation of the container body 10 relative to the engaging projection 22 and the engaging block 24. The deformed container body 10 can easily detach from the fixing structure by detaching from the engaging projection 22 and the engaging block 24. In other words, the positioning recess 28 acts as a guide, making the container body 10 less prone to deformation and allowing the container body 10 to be kept in its original state as much as possible. Furthermore, the positioning recess 28 allows the container body 10 and the lid 20 to be fitted together more securely. The food packaging container 100 of the present invention has a simple structure, a strong fit between the container body 10 and the lid 20, and easy engagement and disengagement of the container body 10 and the lid 20.

[0033] The above is merely a good example of the invention and does not limit the scope of the claims; therefore, equivalent modifications made to the claims fall within the scope of the invention.

Claims

1. A container body including a bottom plate and side walls, wherein the side walls are provided in a straight line outward from the portion where they connect to the bottom plate to the upper end, It includes a lid which is fitted to the container body by a fitting structure and which is detachably fitted to the container body by the fitting structure, The fitting structure comprises an engaging portion that protrudes outward and upward toward the outside of the lid, and an engaging projection located below the engaging portion that protrudes inward toward the inside of the lid. The engagement portion has a contact top portion provided on the upper part of the inner side surface, In a cross-sectional view including the engaging portion and the engaging projection, the engaging projection is provided below the contact top portion. The engaging projection is provided in a tapered shape such that the cross-section of the lid becomes smaller from one end to the other. A food packaging container wherein, when the lid is fitted to the container body, the engaging projection abuts the outside of the side wall of the container body inward, and the abutting top abuts the inside of the side wall of the container body outward, causing the edge of the container body to elastically deform within a predetermined range.

2. The engaging portion includes a limiting portion for restricting the container body, The restricting portion forms a accommodating space into which the container body is inserted between the restricting portion and the contact top portion. The lid is fitted onto the container body such that one end of the container body is located within the storage space. The abutment top portion abuts against the inner portion of the side wall of the container body, and the limiting portion abuts against the outer portion of the side wall of the container body. A food packaging container according to claim 1.

3. The fitting structure further includes a positioning recess, The food packaging container according to claim 1, characterized in that the positioning recess is recessed and provided inside the lid, the positioning recess guides the container body to engage with the lid, the edge of the container body is located inside the positioning recess, and the container body is held in a first state.

4. The positioning recess includes a first positioning portion and a second positioning portion, The food packaging container according to claim 3, characterized in that the lid is fitted onto the container body, the first positioning portion abuts against the inner edge of the container body, and the second positioning portion abuts against the outer edge of the container body.

5. The inner surface of the lid includes a positioning projection that protrudes in the direction of engagement with the container body, The food packaging container according to claim 3, characterized in that the gap between the positioning projection and the inner wall of the lid forms the positioning recess.

6. Includes a first guide portion for guiding the container body, which is provided on the extension of the first positioning portion, The food packaging container according to claim 4, characterized in that the container body extends into the positioning recess by the first guide portion.

7. The container body is made of paper material, The food packaging container according to claim 1, characterized in that the lid is made of a plastic material.

8. The engaging projection is provided integrally with the cover, The food packaging container according to claim 1, characterized in that the engaging projection gradually changes in cross-section from a large to a small in the direction from one end near the lid toward the other end.

9. comprising a plurality of engagement blocks provided inside the lid, The food packaging container according to claim 1, characterized in that the lid is fitted onto the container body such that the engagement block abuts against the outer edge of the container body, and the engagement between the container body and the lid is strengthened by the engagement block.

10. The food packaging container according to claim 1, comprising a bump provided to protrude into the lid, wherein the bump cooperates with the inner wall of the lid to form the engagement portion.

11. The bump includes a second guide portion provided on the side closer to the engagement portion, the second guide portion is located on the extension of the contact top portion, The food packaging container according to claim 10, characterized in that the second guide portion has a curved structure, and the container body extends into the engagement portion by the second guide portion.

12. The container body has a polygonal shape in plan view, The fitting structure is provided in a plan view, adjacent to both sides of one vertex of the polygon of the container body. A food packaging container according to claim 1.

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