A lunch box

Abstract

The present invention provides a lunch box, comprising: a shell, a heating chamber is provided in the shell; a steaming rack is arranged in the shell, and the heating chamber is divided into a plurality of chambers, at least two of which are independent of each other; a driving member is arranged on the shell, and the output end of the driving member is connected to the steaming rack, so that the steaming rack has a first position and a second position, and when the steaming rack is in one of the first position and the second position, the two independent chambers are connected. When the driving member controls the steaming rack to move, the chambers that were originally isolated from each other are connected. After heating for a period of time, the steaming rack is controlled to move to open up the chambers that are isolated from each other, so that steam enters another chamber to heat the food in the other chamber, so that different chambers in the lunch box are heated by steam for different times, and in actual use, foods with different heating time requirements can be heated separately in different chambers, and the problem of too long heating time or insufficient heating time is not easy to occur.

Description

Technical Field

[0001] The invention relates to the technical field of tableware, in particular to a lunch box. Background Art

[0002] Lunch boxes are common tableware on the market. Lunch boxes generally include an outer shell and an inner cavity that is formed inside the outer shell and can accommodate food. With the development of technology, some lunch boxes on the market have a heating function that can heat the food in the lunch box.

[0003] In real life, users carry meals in lunch boxes, and the meals are heated at the same time. However, since meals contain a variety of ingredients, different ingredients require different heating times. For example, some green vegetables will turn yellow if heated for too long, while some staple foods or meat dishes will not be heated sufficiently and will be undercooked if heated for too short a time. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the lunch box in the prior art cannot heat the ingredients separately, thereby providing a lunch box.

[0005] A lunch box, comprising:

[0006] A housing having a heating chamber therein;

[0007] A steaming rack, disposed in the housing, dividing the heating chamber into a plurality of chambers, at least two of the chambers being independent of each other;

[0008] A driving member is arranged on the shell, and an output end of the driving member is connected to the steaming rack so that the steaming rack has a first position and a second position. When the steaming rack is in one of the first position and the second position, the two independent chambers are connected.

[0009] The steaming rack is arranged in the heating cavity along a horizontal direction, and the steaming rack divides the heating cavity into a first heating cavity and a second heating cavity along a vertical direction.

[0010] The housing comprises:

[0011] a first shell;

[0012] The second shell has an open end, and the open end is arranged toward the first shell. The second shell is detachably connected to the first shell, and the steaming rack is arranged on the open end of the second shell.

[0013] The second housing comprises:

[0014] A matching portion, provided at the opening end of the second shell;

[0015] The matching portion is arranged between the first shell and the second shell, so that a steam gap is generated between the first shell and the second shell.

[0016] The steaming rack comprises:

[0017] A supporting end, wherein the supporting end is supported on the second shell and extends into the steam gap, and the size of the steam gap is greater than the thickness of the supporting end.

[0018] The second housing comprises:

[0019] Inner shell;

[0020] An outer shell, wherein the outer shell is sleeved on the outer side of the inner shell, an assembly cavity is formed between the outer shell and the inner shell, and the driving member is arranged in the assembly cavity;

[0021] A through hole is provided in the inner shell or in a region between the inner shell and the outer shell, and the driving member is connected to the steaming rack through the through hole.

[0022] The driving member comprises:

[0023] A push rod is arranged at the output end of the driving member, and the push rod passes through the through hole and contacts the steaming rack.

[0024] The lunch box also includes:

[0025] A partition is disposed in at least one of the chambers to divide the chamber into at least two sub-heating chambers.

[0026] The partition is arranged below the steaming rack.

[0027] The lunch box also includes:

[0028] A plurality of heating bodies, each of the sub-heating chambers corresponds to at least one heating body, and each of the heating bodies has an independent switch.

[0029] The steaming rack is provided with a groove portion.

[0030] The technical solution of the present invention has the following advantages:

[0031] 1. The present invention provides a lunch box, comprising: a shell, wherein the shell has a heating chamber; a steaming rack, arranged in the shell, dividing the heating chamber into a plurality of chambers, wherein at least two of the chambers are independent of each other; a driving member, arranged on the shell, wherein the output end of the driving member is connected to the steaming rack, so that the steaming rack has a first position and a second position, and when the steaming rack is in either the first position or the second position, the two independent chambers are connected.

[0032] The steaming rack divides the heating chamber into multiple chambers inside the lunch box. When the driving member controls the steaming rack to move, the originally isolated chambers are connected. The lunch box is heated by steam. The steam first steams and heats the food in one of the chambers. After heating for a period of time, the steaming rack is controlled to move to open the isolated chambers, so that the steam enters another chamber to heat the food in another chamber, so that different chambers in the lunch box are heated by steam for different times. In actual use, foods with different heating time requirements can be heated separately in different chambers, so that various foods can be heated more appropriately, and the problem of excessive heating time or insufficient heating time is not easy to occur.

[0033] 2. In the lunch box provided by the present invention, the steaming rack is arranged in the heating cavity along the horizontal direction, and the steaming rack divides the heating cavity into a first heating cavity and a second heating cavity along the vertical direction.

[0034] When using, the user can first place the food that requires a longer heating time in the space below the steam rack, and then support the steam rack above the food, so that the first heating chamber where the food below the steam rack is located is closed. Then place the food that requires a shorter heating time on the steam rack, and then close the lunch box to close the second heating chamber above the steam rack. During heating, the first heating chamber at the bottom of the lunch box is heated to generate steam, and the steam heats the food below the steam rack in the first heating chamber. Since the first heating chamber is relatively closed, the steam will not enter the second heating chamber. Therefore, while the food below the steam rack is heated, the food above the steam rack in the second heating chamber is not in a heating state. After a certain period of time, the steam rack is controlled to move by the driving member, so that the second heating chambers above and below the steam rack are connected to the first heating chamber, and the steam enters the second heating chamber above the steam rack, and the food in the second heating chamber is heated at the same time, so that the time for the food in the first heating chamber and the second heating chamber to be heated by steam is different, so as to meet the different requirements of different foods for heating time.

[0035] 3. The lunch box provided by the present invention comprises a shell including: a first shell; a second shell, one end of which is open and the open end is arranged toward the first shell, the second shell is detachably connected to the first shell, and the steaming rack is arranged on the open end of the second shell.

[0036] The steaming frame is arranged on the open end of the second shell body, and can directly close the second shell body by closing the opening of the second shell body, and form a closed first heating cavity in the second shell body.

[0037] 4. The lunch box provided by the present invention, the second shell includes: a matching portion, which is arranged at the open end of the second shell; the matching portion is arranged between the first shell and the second shell to generate a steam gap between the first shell and the second shell; the steam rack includes: a supporting end, which is supported on the second shell and extends into the steam gap, and the size of the steam gap is greater than the thickness of the supporting end.

[0038] The steam rack is supported on the inner side of the opening of the second shell, and the matching portion surrounds the steam rack. The supporting end itself is embedded in the steam gap, and through the matching of the supporting end with the first shell and the second shell, a passage for steam to pass can be formed when the steam rack rises upward, so that the steam in the first heating chamber below the steam rack enters the second heating chamber to continue to play a heating role.

[0039] 5. In the lunch box provided by the present invention, the second shell body comprises: an inner shell; an outer shell, the outer shell is sleeved on the outer side of the inner shell, an assembly cavity is formed between the outer shell and the inner shell, and the driving member is arranged in the assembly cavity; a through hole is arranged on the inner shell, and the driving member is connected to the steaming rack through the through hole.

[0040] The function of the driving member is to drive the steam rack to move. In this solution, the driving member drives the steam rack to rise, so that a passage for steam to pass through is formed between the steam rack and the second shell.

[0041] 6. In the lunch box provided by the present invention, the driving member comprises: a push rod, which is arranged at the output end of the driving member, and the push rod passes through the through hole and abuts against the steaming rack.

[0042] The push rod plays a supporting and transmission role. The cross-sectional shape of the push rod is more regular and the cross-sectional area is smaller. The push rod is used to push the steaming rack, which can reduce the size of the through hole and make the sealing structure between the through hole and the push rod easier to set, thereby preventing steam from escaping through the through hole.

[0043] 7. The lunch box provided by the present invention further comprises: a partition, which is arranged in at least one of the chambers to divide the chamber into at least two sub-heating chambers.

[0044] The partition can further divide the chamber, and the combination of the partition and the steaming rack further divides the internal space of the lunch box, thereby improving the utilization rate of the internal space of the lunch box.

[0045] 8. The lunch box provided by the present invention further comprises: a plurality of heating bodies, each of the sub-heating chambers corresponds to at least one heating body, and each of the heating bodies has an independent switch.

[0046] When the first heating cavity below the steaming rack is divided into a plurality of sub-heating cavities, the sub-heating cavities are isolated from each other, and each sub-heating cavity can correspond to a heating body with an independent switch. Therefore, in the first heating cavity, each sub-heating cavity can be heated independently, and each sub-heating cavity can be heated by the heating body to form steam. After the food in the sub-heating cavity below the steaming rack is heated, the steaming rack is controlled to rise to allow the steam to enter the second heating cavity to heat the food. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0048] Figure 1 It is a cross-sectional view of the internal structure of the lunch box of the present invention;

[0049] Figure 2 for Figure 1 I in the middle shows an enlarged view of the steaming rack in a position of closing the first heating chamber;

[0050] Figure 3 for relative to Figure 1 Schematic diagram of the steaming rack in the raised state;

[0051] Figure 4 for Figure 3 Schematic diagram of steam entering the second heating chamber when the steam rack at II in the middle rises to open the first heating chamber;

[0052] Figure 5 for Figure 1 The AA in the middle represents a cross-sectional view of the structure in which the partition can separate the two side sub-heating chambers.

[0053] Description of reference numerals:

[0054] 1. First shell; 11. Handle; 2. Second shell; 21. Inner shell; 22. Outer shell; 23. Assembly cavity; 24. Matching part; 25. Driving member; 26. Push rod; 3. Steaming rack; 31. Support end; 32. Groove part; 4. First heating cavity; 41. Sub-heating cavity; 42. First lunch box; 5. Second heating cavity; 51. Second lunch box; 6. Partition; 7. First heating body; 8. Second heating body; 9. Buckle assembly; 91. Buckle; 92. Locking member. DETAILED DESCRIPTION

[0055] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0057] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0059] Example 1

[0060] The present invention provides a lunch box, such as Figure 1 , Figure 3As shown, it includes: a shell 22, wherein the shell 22 has a heating chamber; a steaming rack 3, which is arranged in the shell 22 and divides the heating chamber into a plurality of chambers, at least two of which are independent of each other; a driving member 25, which is arranged on the shell 22, wherein the output end of the driving member 25 is connected to the steaming rack 3, so that the steaming rack 3 has a first position and a second position, and when the steaming rack 3 is in one of the first position and the second position, the two independent chambers are connected. The steaming rack 3 divides the heating chamber into a plurality of chambers inside the lunch box, and when the driving member 25 controls the steaming rack 3 to move, the chambers that were originally isolated from each other are connected. The lunch box is heated by steam. The steam first steams and heats the food in one of the chambers. After heating for a period of time, the steam rack 3 is controlled to move to open up the isolated chambers, so that the steam enters another chamber to heat the food in the other chamber. Different chambers in the lunch box are heated by steam for different times. In actual use, foods with different heating time requirements can be heated separately in different chambers, so that various foods can be heated more appropriately, and the problem of excessive heating time or insufficient heating time is less likely to occur.

[0061] Specifically, Figure 1 As shown, in this embodiment, the first shell 1 and the second shell 2 are both slot-shaped structures with one end open, and the open ends of the first shell 1 and the second shell 2 are buckled together to form a heating chamber inside the first shell 1 and the second shell 2. As an alternative embodiment, the overall lunch box can be composed of more than two parts, such as the first shell 1, the second shell 2, and the third shell are combined to form the heating chamber.

[0062] In the above-mentioned embodiment, as a further limited embodiment, Figure 1 , Figure 3 As shown, a handle 11 is provided on the top of the first housing 1. A groove for receiving the handle 11 is provided at a position corresponding to the handle 11 on the first housing 1.

[0063] There is no specific restriction on the combination of the first shell 1 and the second shell 2. Figure 1 , Figure 2 As shown, in this embodiment, the first housing 1 and the second housing 2 are connected to each other through a buckle assembly 9. The first housing 1 is provided with a buckle 91, and the outer side of the second housing 2 is provided with a lock member 92 matching the buckle 91. The lock member 92 is a convex buckle or a groove or a Figure 1 , Figure 3The shown release member itself is relatively protrudingly arranged on the outer side of the second housing 2, and a groove structure is provided on the lock member 92. After the first housing 1 and the second housing 2 are buckled, the first housing 1 and the second housing 2 are further fastened by the buckle member 91. The buckle member 91 is rotatably connected to the first housing 1, and the buckling of the buckle member 91 is a rotational buckling. As another alternative embodiment, the first housing 1 and the second housing 2 are fixed by adsorption through a magnetic member after being buckled.

[0064] The shape of the heating chamber is affected by the shape of the inner wall of the first shell 1 or the second shell 2. The shape of the heating chamber itself is not specifically limited. Based on the above embodiment, as a further limited embodiment, Figure 3 As shown, the first shell 1 and the second shell 2 can be approximately regarded as a rectangle, forming a rectangular heating chamber. As an alternative embodiment, the heating chamber can be spherical, ellipsoidal, cube or other shapes.

[0065] There is no specific restriction on the arrangement of the steaming rack 3. Figure 1 , Figure 3 As shown, the steaming rack 3 is arranged in the heating cavity along the horizontal direction, and the steaming rack 3 divides the heating cavity into a first heating cavity 4 and a second heating cavity 5 along the vertical direction. When using, the user can first place the food that needs a longer heating time in the space below the steaming rack 3, and then support the steaming rack 3 above the food, so that the first heating cavity 4 where the food below the steaming rack 3 is located is closed. Then place the food that needs a shorter heating time on the steaming rack 3, and then close the lunch box to close the second heating cavity 5 above the steaming rack 3. When heating, the first heating cavity 4 at the bottom of the lunch box is heated to generate steam, and the steam heats the food below the steaming rack 3 in the first heating cavity 4. Since the first heating cavity 4 is relatively closed, the steam will not enter the second heating cavity 5. Therefore, while the food below the steaming rack 3 is heated, the food above the steaming rack 3 in the second heating cavity 5 is not in a heated state. After a certain period of time, the driving member 25 controls the steam rack 3 to move, so that the second heating chamber 5 and the first heating chamber 4 above and below the steam rack 3 are connected to each other, and steam enters the second heating chamber 5 above the steam rack 3, and heats the food in the second heating chamber 5 at the same time, so that the time for the food in the first heating chamber 4 and the second heating chamber 5 to be heated by steam is different, so as to meet the different heating time requirements of different foods. As an alternative embodiment, the steam rack 3 is arranged in an inclined direction, or the steam rack 3 is arranged in a vertical direction, so as to separate the heating chamber.

[0066] Based on the above implementation mode, as a further limited implementation mode, Figure 1 , Figure 3As shown, the steaming rack 3 is disposed on the open end of the second shell 2. The steaming rack 3 is disposed on the open end of the second shell 2, and can directly close the second shell 2 by closing the opening of the second shell 2, and form a closed first heating chamber 4 in the second shell 2.

[0067] Based on the above implementation mode, as a further limited implementation mode, Figure 2 , Figure 4 As shown, the second shell 2 includes: a matching portion 24, which is arranged at the open end of the second shell 2, and the matching portion 24 is arranged between the first shell and the second shell 2, so that a steam gap is generated between the first shell and the second shell. Specifically, the steam gap refers to a gap through which steam can flow, such as Figure 4 As shown by the middle arrow, the steam moves from bottom to top in the steam gap.

[0068] The steam rack comprises: a supporting end, the supporting end is supported on the second shell body, and the supporting end extends into the steam gap, and the size of the steam gap is greater than the thickness of the supporting end.

[0069] The steam rack is supported on the inner side of the opening of the second shell, and the matching portion surrounds the steam rack. The supporting end itself is embedded in the steam gap, and through the matching of the supporting end with the first shell and the second shell, a passage for steam to pass can be formed when the steam rack rises upward, so that the steam in the first heating chamber below the steam rack enters the second heating chamber to continue to play a heating role.

[0070] Specifically, Figure 4 As shown, the height of the steam gap is greater than the thickness of the support end 31 itself, so that the support end 31 can form gaps at its upper and lower parts respectively after moving upward. As an alternative embodiment, the matching portion is integrally formed with the second shell.

[0071] On the basis of the above implementation manner, as a further limited implementation manner, Figure 1 , Figure 3 , Figure 5 As shown, the second shell 2 includes: an inner shell 21; an outer shell 22, the outer shell 22 is sleeved on the outer side of the inner shell 21, the outer shell 22 and the inner shell 21 form an assembly cavity 23, and the driving member 25 is arranged in the assembly cavity 23. The double-layer second shell 2 forms an assembly cavity 23 inside, and the assembly cavity 23 can accommodate and install various functional components, so that the lunch box has more functions. As an alternative embodiment, the matching part is integrally formed with the inner shell 21.

[0072] Specifically, the second shell 2 includes: a through hole, which is provided on the inner shell 21, and the driving member 25 is connected to the steaming rack 3 through the through hole. The driving member 25 is used to drive the steaming rack 3 to move, and in this embodiment, it drives the steaming rack 3 to rise, so that a passage for steam to pass is formed between the steaming rack 3 and the second shell 2. The driving member 25 can be a solenoid valve, or an electric motor or a push rod motor.

[0073] In this embodiment, Figure 1-Figure 4 As shown, the driving member 25 includes: a push rod 26, which is arranged at the output end of the driving member 25, and the push rod 26 passes through the through hole and contacts the steaming rack 3. The push rod 26 plays a supporting and transmission role. The cross-sectional shape of the push rod 26 is more regular and the cross-sectional area is smaller. The push rod 26 is used to push the steaming rack 3, which can reduce the size of the through hole, and the sealing structure between the through hole and the push rod 26 is easier to set, so as to prevent steam from escaping through the through hole. The push rod 26 is a cylindrical rod with a circular cross section. As an alternative embodiment, the push rod 26 is a rod with a polygonal cross section. As a further alternative embodiment, a sealing ring is provided between the push rod 26 and the inner wall of the through hole.

[0074] On the basis of the above implementation manner, as a further limited implementation manner, Figure 1 , Figure 5 As shown, the lunch box further includes: a partition 6, which is arranged in at least one of the chambers to divide the chamber into at least two sub-heating chambers 41. The partition 6 can further divide the chamber, and the combination of the partition 6 and the steaming rack 3 further divides the internal space of the lunch box, thereby improving the utilization rate of the internal space of the lunch box.

[0075] Specifically, the partition 6 is provided below the steaming rack 3. The partition 6 provided below the steaming rack 3 can further separate the first heating chamber 4. The steaming rack 3 can be supported on the partition 6. In one embodiment, a groove adapted to the partition 6 is provided below the steaming rack 3. When the steaming rack 3 is placed at the opening end of the second shell 2, the placement position of the steaming rack 3 is positioned by aligning the positions of the partition 6 and the groove, so that after the steaming rack 3 is placed, a gap just flows out between the support end 31 of the edge of the steaming rack 3 and the matching portion 24 of the opening end of the second shell 2.

[0076] On the basis of the above implementation manner, as a further limited implementation manner, Figure 1 , Figure 3As shown, the lunch box also includes: a plurality of heating bodies, each of the sub-heating chambers 41 corresponds to at least one heating body, and each of the heating bodies has an independent switch. When the first heating chamber 4 below the partition 6 is divided into a plurality of sub-heating chambers 41, the sub-heating chambers 41 are isolated from each other, and each sub-heating chamber 41 can correspond to a heating body with an independent switch. Therefore, in the first heating chamber 4, each sub-heating chamber 41 can be heated independently, and each sub-heating chamber 41 can be heated by the heating body to form steam. After the food in the sub-heating chamber 41 below the steaming rack 3 is heated, the steaming rack 3 is controlled to rise to allow the steam to enter the second heating chamber 5 to heat the food. Specifically, as Figure 1 As shown, the heating body includes a first heating body 7 and a second heating body 8. The first heating body 7 and the second heating body 8 are both arranged in the assembly cavity 23 and are arranged at the bottom of the sub-heating cavity 41 on the left and right sides of the partition 6.

[0077] On the basis of the above implementation manner, as a further limited implementation manner, Figure 1 As shown, the steaming rack 3 is provided with a groove 32. The groove 32 can play a limiting role. When the second lunch box 51 is placed on the steaming rack 3, the second lunch box 51 is placed in the groove 32 to limit the position of the second lunch box 51. Figure 1 , Figure 3 As shown, below the steaming rack 3 , a groove or a protrusion structure is correspondingly provided at the bottom of the second shell 2 , so as to limit the position of the first lunch box 42 .

[0078] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A lunch box, characterized in that: include: A housing having a heating chamber therein; A steaming rack (3) is disposed in the housing, dividing the heating chamber into a plurality of chambers along a height direction, at least two of the chambers being independent of each other; A driving member (25) is arranged on the shell, the output end of the driving member (25) is connected to the steaming rack (3), so that the steaming rack (3) has a first position and a second position, and when the steaming rack (3) is in either the first position or the second position, the two independent chambers are in communication; The housing comprises: A first housing (1); a second shell (2) having an open end, the open end being arranged toward the first shell (1), the second shell (2) being detachably connected to the first shell (1), and the steaming rack being arranged on the open end of the second shell (2); The second housing (2) comprises: Inner shell (21); An outer shell (22), the outer shell (22) being sleeved on the outer side of the inner shell (21), an assembly cavity (23) being formed between the outer shell (22) and the inner shell (21), and the driving member (25) being arranged in the assembly cavity (23); A through hole is provided in the inner shell (21) or in a region between the inner shell (21) and the outer shell (22); the driving member (25) is connected to the steaming rack (3) through the through hole.

2. The lunch box according to claim 1, characterized in that: The steaming rack (3) is arranged in the heating chamber in a horizontal direction, and the steaming rack (3) divides the heating chamber into a first heating chamber (4) and a second heating chamber (5) in a vertical direction.

3. The lunch box according to claim 1, characterized in that: The second housing (2) comprises: A matching portion (24) provided at the opening end of the second shell (2); The matching portion (24) is arranged between the first shell and the second shell (2) so as to generate a steam gap between the first shell and the second shell.

4. The lunch box according to claim 3, characterized in that: The steaming rack (3) comprises: A support end (31), the support end (31) being supported on the second shell (2), and the support end (31) extending into the steam gap, the size of the steam gap being larger than the thickness of the support end (31).

5. The lunch box according to claim 1, characterized in that: The driving member (25) comprises: A push rod (26) is arranged at the output end of the driving member (25), and the push rod (26) passes through the through hole and contacts the steaming rack (3).

6. The lunch box according to claim 1, characterized in that: The lunch box also includes: A partition (6), the partition (6) being arranged in at least one of the chambers, and dividing the chamber into at least two sub-heating chambers (41).

7. The lunch box according to claim 6, characterized in that: The partition is arranged below the steaming rack (3).

8. The lunch box according to claim 7, characterized in that: The lunch box also includes: A plurality of heating bodies, each of the sub-heating chambers (41) corresponds to at least one heating body, and each of the heating bodies has an independent switch.

9. The lunch box according to any one of claims 1 to 8, characterized in that: The steaming rack (3) is provided with a groove portion (32).

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