Electrically heated lunch box

Abstract

The application discloses an electric heating lunch box, which comprises a bottom cover with a receiving cavity, an upper cover used for covering the bottom cover, a handle connected to the upper cover, a heating body arranged between the bottom cover and the upper cover and supported by the bottom cover and used for heating food, and a locking mechanism accommodated in the receiving cavity and located below the heating body and slidably connected to the bottom cover and used for locking the handle when the upper cover covers the bottom cover or unlocking the handle under the pushing of external force. The electric heating lunch box of the application avoids the situation that the upper cover is loosened from the bottom cover due to thermal expansion of the upper cover by connecting the upper cover with the handle and locking the handle with the bottom cover.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, and in particular to an electric heating lunch box. BACKGROUND

[0002] The electric heating lunch box is a kind of life electric appliance which generates high-temperature steam in the lunch box through the heating body after being electrified to heat and keep food warm. The electric heating lunch box is small in structure, portable and convenient to use, and is particularly loved by the majority of office workers.

[0003] In the existing electric heating lunch box, the handle is basically connected with the cover, the cover is provided with a buckle, and the cover and the box body are buckled tightly through the buckle. However, since the cover expands and becomes larger due to heat when heating food, the cover and the box body are prone to loosening during the process of lifting the lunch box by the handle, which affects normal use. SUMMARY

[0004] To solve at least one problem existing in the prior art, according to one aspect of the present application, an electric heating lunch box is provided, comprising: a bottom cover having a receiving cavity; an upper cover for covering the bottom cover; a handle connected to the upper cover; a heating body arranged between the bottom cover and the upper cover and supported by the bottom cover for heating food; and a locking mechanism accommodated in the receiving cavity and located below the heating body, and being slidably connected with the bottom cover for locking the handle when the upper cover covers the bottom cover, or for unlocking the handle under the pushing of external force.

[0005] In this way, since the handle is connected to the upper cover, the two are as a whole, and when the upper cover covers the bottom cover, the locking mechanism slides under the drive of the handle to give way to the handle, and when the upper cover is placed on the bottom cover, the position of the handle is also in place, and the locking mechanism returns to the original position to lock the handle; when the upper cover needs to be opened relative to the bottom cover, the locking mechanism is pushed by external force, and the handle can be unlocked by the locking mechanism, so that the bottom cover, the upper cover and the handle are locked as a whole by the covering of the upper cover, and the upper cover and the handle can be unlocked as a whole by pushing the locking mechanism by external force, which is convenient for the user to cover and use. Since the part that deforms mainly is the upper cover when heating food, the handle is located outside the upper cover and is less affected by thermal deformation, and since the handle and the bottom cover are connected, the situation that the upper cover and the bottom cover are loosened due to the thermal expansion of the upper cover when the upper cover and the bottom cover are directly buckled by the lock is avoided.

[0006] In some embodiments, the handle is rotatably connected to the upper cover, so that the handle can be rotated to one side of the upper cover when the handle and the locking mechanism are in the unlocked state.

[0007] In some embodiments, the handle is provided with a protrusion, the upper cover is provided with a positioning stop, and when the protrusion is clamped in the positioning stop, the handle can be locked with the locking mechanism.

[0008] In some embodiments, the locking mechanism comprises a pair of buckles, a pair of elastic members and a mounting frame, the mounting frame is connected to the bottom cover, a pair of buckles are slidingly arranged on opposite sides of the bottom cover and are respectively used for clamping one end of the handle, and one elastic member is connected between the mounting frame and one buckle and is used for applying an elastic force to the buckle.

[0009] In some embodiments, the mounting frame comprises two sub-frames, one elastic member is connected between one buckle and one sub-frame, and the locking mechanism further comprises a linkage structure, the linkage structure is respectively in abutment with two buckles, so that when an external force presses one buckle towards the center of the bottom cover, the linkage structure can push the other buckle to move towards the center of the bottom cover at the same time, so that two buckles can be unlocked to the handle.

[0010] In some embodiments, two buckles are defined as a first buckle and a second buckle, the linkage structure comprises a connecting rod and a push rod, the connecting rod is slidingly connected relative to the bottom cover and is in abutment with the first buckle, and the push rod is rotatably connected relative to the bottom cover and is in abutment with the second buckle and the connecting rod at both ends, so as to be rotatable relative to the connecting rod and the second buckle respectively, so that when an external force presses the first buckle, the push rod can drive the second buckle to move.

[0011] In some embodiments, the connecting rod is provided with a guide hole, the length direction of the guide hole is the movement direction of the first buckle or the second buckle, the bottom cover is provided with a guide column, and the guide column is arranged in the guide hole to move in the guide hole.

[0012] In some embodiments, the bottom of the second buckle is provided with a first recess, the top of the connecting rod is provided with a second recess, and the push rod rotates in the first recess and the second recess respectively.

[0013] In some embodiments, the second buckle is provided with an embedding groove, and the sub-frame is embedded in the embedding groove.

[0014] In some embodiments, one side of the sub-frame towards the elastic member is provided with a limiting block, and the limiting block is used for abutting against the buckle when the buckle moves towards the center of the bottom cover, so as to limit the further movement of the buckle. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1The exploded view of the electric heating lunch box of the embodiment of the present application;

[0016] Figure 2 The structure view of the electric heating lunch box in Figure 1

[0017] Figure 3 The structure view of the bottom cover and the locking mechanism in Figure 1

[0018] Figure 4 The structure view of the first buckle and the locking mechanism in Figure 2

[0019] Figure 5 The structure view of the second buckle and the locking mechanism in Figure 2

[0020] Figure 6 The structure view of the locking mechanism in Figure 1

[0021] Figure 7 The structure view of the bottom cover in Figure 1

[0022] In the drawings, the reference signs have the following meanings:

[0023] 100 - electric heating lunch box, 10 - upper cover, 11 - rotating shaft, 12 - first fixing screw, 13 - positioning stop, 14 - avoiding track, 20 - bottom cover, 21 - accommodating cavity, 22 - mounting column, 23 - guiding column, 24 - fixing frame, 25 - connecting frame, 30 - handle, 31 - through hole, 32 - protrusion, 33 - clamping groove, 34 - connecting part, 35 - clamping part, 36 - first guiding inclined surface, 40 - heating body, 50 - locking mechanism, 511 - second guiding inclined surface, 512 - first buckle, 5121 - first mounting plate, 5122 - mounting groove, 5123 - first clamping block, 5124 - first through hole, 5125 - pushing protrusion, 513 - second buckle, 5131 - second mounting plate, 5132 - second clamping block, 5133 - abutting frame, 5134 - embedding groove, 5135 - first recess, 5136 - second through hole, 52 - elastic member, 53 - mounting frame, 531 - sub-frame, 5311 - limiting block, 54 - linkage structure, 541 - connecting rod, 5411 - guiding hole, 5412 - avoiding hole, 5413 - second recess, 542 - pushing rod. DETAILED DESCRIPTION

[0024] In order to better understand and implement, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application.

[0025] ​​​​​​In the description of the present application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0027] The present application will be further described in detail below with reference to the accompanying drawings.

[0028] Please refer to Figures 1 to 7 The electric food warmer 100 provided by the embodiment of the present application comprises an upper cover 10, a bottom cover 20, a handle 30, a heating body 40 and a locking mechanism 50.

[0029] Among them, please refer to Figure 1 and Figure 2 The bottom cover 20 has a receiving cavity 21; the upper cover 10 is used to cover the bottom cover 20; the handle 30 is connected to the upper cover 10; the heating body 40 is arranged between the bottom cover 20 and the upper cover 10 and is supported by the bottom cover 20, and is used to heat food; the locking mechanism 50 is accommodated in the receiving cavity 21 and is located below the heating body 40, and is slidably connected to the bottom cover 20, and is used to lock the handle 30 when the upper cover 10 and the bottom cover 20 are covered, or is used to unlock the handle 30 under the pushing of an external force.

[0030] The handle 30 is connected to the upper cover 10, and the two are integrated as a whole. When the upper cover 10 is covered on the bottom cover 20, the locking mechanism 50 is driven by the handle 30 to slide to accommodate the handle 30. After the upper cover 10 is covered on the bottom cover 20, the position of the handle 30 is also in place, and the locking mechanism 50 returns to the original position to lock the handle 30. When it is necessary to open the upper cover 10 relative to the bottom cover 20, an external force pushes the locking mechanism 50, which can unlock the handle 30 through the locking mechanism 50, so that the bottom cover 20 and the upper cover 10 and the handle 30 are locked as a whole through the covering of the upper cover 10. The external force pushes the locking mechanism 50 to unlock the upper cover 10 and the handle 30 as a whole, which is convenient for the user to cover and use. When the food is heated, the part that deforms mainly is the upper cover 10, and the handle 30 is located outside the upper cover 10 and is less affected by thermal deformation. Since the handle 30 and the upper cover 10 are connected, the upper cover 10 and the bottom cover 20 are not directly clamped by the lock catch, and the upper cover 10 is not loosened due to thermal expansion of the bottom cover 20.

[0031] Specifically, the electric heating lunch box 100 in use contains water in the heating body 40, heats the water, and places the box body containing food on the water in the heating body 40 to heat the food by the heat of the water.

[0032] Please refer to Figure 1 and Figure 2 In an embodiment of the present application, in order to facilitate the adjustment of the placement of the handle 30 relative to the upper cover 10, the handle 30 is rotatably connected to the upper cover 10, so that when the handle 30 and the locking mechanism 50 are in the unlocked state, the handle 30 can be rotated to one side of the upper cover 10. In this way, when the upper cover 10 and the bottom cover 20 need to be covered, the handle 30 is rotated to the vertical state relative to the upper cover 10, so that after the upper cover 10 and the bottom cover 20, the hand can easily lift the entire electric heating lunch box 100 through the handle 30. When the upper cover 10 and the bottom cover 20 are in a split state, the handle 30 can be rotated to the side of the upper cover 10 relative to the upper cover 10 for easy storage.

[0033] Specifically, when the handle 30 and the upper cover 10 are rotatably connected, the upper cover 10 is provided with a rotating shaft 11, and the handle 30 is provided with a through hole 31. The rotating shaft 11 passes through the through hole 31 and is threadedly connected with the rotating shaft 11 through a first fixing screw 12, so that the handle 30 is connected to the upper cover 10 as a whole, and the handle 30 can rotate around the rotating shaft 11 to adjust the position of the handle 30 relative to the upper cover 10.

[0034] Specifically, when the handle 30 needs to be locked with the locking mechanism 50, the handle 30 needs to be positioned with the upper cover 10, the handle 30 is provided with a protrusion 32, and the upper cover 10 is provided with a positioning stop 13, when the protrusion 32 is clamped in the positioning stop 13, the handle 30 can be locked with the locking mechanism 50, so when the handle 30 is rotated relative to the upper cover 10 to the protrusion 32 clamped in the positioning stop 13, the position of the handle 30 is fixed at this time, that is, the handle 30 can be lifted to cover the upper cover 10 on the bottom cover 20, and the handle 30 can also be locked with the locking mechanism 50.

[0035] Understandably, since the handle 30 needs to be rotated relative to the upper cover 10, the protrusion 32 provided on the handle 30 will also be rotated relative to the upper cover 10, in order to avoid the protrusion 32, the upper cover 10 is provided with a avoiding track 14, so as to avoid the rotation of the protrusion 32 through the avoiding track 14, that is, only the upper cover 10 needs to be thinned in the corresponding protrusion 32 rotation area, and the whole upper cover 10 is thinned relative to the whole side of the upper cover 10, which ensures the structural strength of the whole upper cover 10.

[0036] Please refer to Figures 1 to 6 In an embodiment of the present application, when the locking mechanism 50 and the handle 30 are locked, the locking mechanism 50 includes a pair of buckles, a pair of elastic members 52 and a mounting frame 53, the mounting frame 53 is connected to the bottom cover 20, the pair of buckles is slidingly arranged on the opposite sides of the bottom cover 20, and is respectively used for clamping one end of the handle 30, one elastic member 52 is connected between the mounting frame 53 and one buckle, and is used for applying an elastic force to the buckle, so that by pressing the pair of buckles, that is, when the upper cover 10 is covered on the bottom cover 20, the handle 30 presses the two buckles, the buckle presses the elastic member 52, and when the handle 30 is installed in place, the buckle clamps the opposite ends of the handle 30 under the elastic force of the elastic member 52, and the elastic member 52 also has an elastic force to the buckle to press the buckle and the handle 30.

[0037] Among them, the handle 30 of the embodiment includes a connecting portion 34 and two clamping portions 35 arranged at both ends of the connecting portion 34, the clamping portion 35 is arranged perpendicular to the connecting portion 34, and the clamping portion 35 is used for clamping the buckle, when the handle 30 needs to be locked with the locking mechanism 50, the handle 30 is in a vertical state relative to the upper cover 10. Specifically, when the buckle is clamped and clamped with the handle 30, the side of the clamping portion 35 facing the locking mechanism 50 is provided with a clamping groove 33, and the buckle is clamped in the clamping groove 33, so as to realize the clamping of the handle 30 and the locking mechanism 50.

[0038] When the upper cover 10 is closed towards the bottom cover 20, the handle 30 also moves towards the bottom cover 20. In order to facilitate the locking of the handle 30 and the locking mechanism 50, the free end of the clamping portion 35 is provided with a first guide slope 36, and the buckle is provided with a second guide slope 511. Through the cooperation of the first guide slope 36 and the second guide slope 511, the handle 30 can quickly continue to move downwards to be clamped with the locking mechanism 50.

[0039] Further, in order to facilitate the operation of the hand, the unlocking of the handle 30 can be realized by pressing with one hand. The mounting frame 53 includes two sub-frames 531, and an elastic member 52 is connected between one buckle and one sub-frame 531. The locking mechanism 50 further includes a linkage structure 54, which abuts against the two buckles respectively. When an external force presses one buckle towards the center of the bottom cover 20, the linkage structure 54 can push the other buckle to also move towards the center of the bottom cover 20, so that the two buckles unlock the handle 30. In this way, by setting the linkage structure 54, the hand pressing one buckle can realize the movement of the two buckles towards the center of the bottom cover 20. At this time, the two buckles moving towards the center of the bottom cover 20 are away from the handle 30, and the handle 30 is unlocked.

[0040] Please refer to Figure 3 and Figure 7 Two connecting frames 25 are arranged on the bottom cover 20, and one connecting frame 25 is used to install one sub-frame 531.

[0041] In order to facilitate the description, the two buckles are respectively referred to as a first buckle 512 and a second buckle 513 in the embodiment. The linkage structure 54 includes a connecting rod 541 and a push rod 542. The connecting rod 541 is slidingly connected relative to the bottom cover 20 and abuts against the first buckle 512. The push rod 542 is rotatably connected relative to the bottom cover 20 and abuts against the second buckle 513 and the connecting rod 541 at both ends, so as to be able to rotate relative to the connecting rod 541 and the second buckle 513, respectively. When an external force presses the first buckle 512, the push rod 542 can drive the second buckle 513 to move. That is, when the external force presses the first buckle 512, the first buckle 512 moves towards the center of the bottom cover 20, i.e. towards the second buckle 513. The first buckle 512 drives the connecting rod 541 to move towards the second buckle 513. The connecting rod 541 drives the push rod 542 to rotate relative to the bottom cover 20. The rotation of the push rod 542 drives the second buckle 513 to rotate towards the first buckle 512. In this way, the movement of the two buckles in opposite directions is realized, and the handle 30 is unlocked.

[0042] Specifically, the first buckle 512 of the embodiment comprises a first mounting plate 5121, a mounting groove 5122 and a first clamping block 5123, the mounting groove 5122 and the first clamping block 5123 are respectively arranged on opposite sides of the first mounting plate 5121, the first mounting plate 5121 is arranged on the inner side of the bottom cover 20, the first clamping block 5123 penetrates the bottom cover 20 and moves on the side wall of the bottom cover 20, is used for clamping the clamping part 35 of the handle 30, the mounting groove 5122 is used for mounting the connecting rod 541, so that the movement of the first buckle 512 can drive the movement of the connecting rod 541, and by arranging the mounting groove 5122, the insertion and installation of the connecting rod 541 are facilitated, and at the same time, the sub rack 531 is arranged above the mounting groove 5122 during installation, which also facilitates the cooperation of the installation position of the sub rack 531.

[0043] Among them, the first mounting plate 5121 is provided with a first through hole 5124 for the installation column 22 of the elastic member 52 to penetrate, the extension direction of the installation column 22 is the movement direction of the first buckle 512 and the second buckle 513, and when the first buckle 512 is installed on the bottom cover 20, the installation column 22 penetrates the first through hole 5124, so that the position of the first buckle 512 is also limited.

[0044] Specifically, referring to Figure 5 and Figure 6 The second buckle 513 of the embodiment comprises a second mounting plate 5131, a second clamping block 5132 and a resisting rack 5133, the second clamping block 5132 and the resisting rack 5133 are arranged on opposite sides of the second mounting plate 5131, the second mounting plate 5131 is arranged on the inner side of the bottom cover 20, the second clamping block 5132 penetrates the bottom cover 20 and moves on the side wall of the bottom cover 20, is used for clamping the clamping part 35 of the handle 30, and the resisting rack 5133 is used for resisting and cooperating with the push rod 542, so that the rotation of the push rod 542 drives the movement of the second buckle 513.

[0045] Among them, in order to adapt to the installation of the push rod 542 and the installation of the sub rack 531, the end of the resisting rack 5133 connected to the second mounting plate 5131 is provided with an embedded groove 5134, the sub rack 531 is arranged in the embedded groove 5134 when installed with the bottom cover 20, and the end of the resisting rack 5133 away from the second mounting plate 5131 is used for rotating the push rod 542.

[0046] Among them, the second mounting plate 5131 is provided with a second through hole 5136 for the installation column 22 of the elastic member 52 to penetrate, the extension direction of the installation column 22 is the movement direction of the second buckle 513 and the second buckle 513, and when the second buckle 513 is installed on the bottom cover 20, the installation column 22 penetrates the second through hole 5136, so that the position of the second buckle 513 is also limited.

[0047] Please refer to Figures 3 to 5The guide hole 5411 is arranged on the connecting rod 541, the length direction of the guide hole 5411 is the movement direction of the first buckle 512 or the second buckle 513, the guide column 23 is arranged on the bottom cover 20, the guide column 23 is arranged in the guide hole 5411, and the guide hole 5411 moves, so that the guide column 23 is arranged on the bottom cover 20, the guide hole 5411 is arranged on the connecting rod 541, and the connecting rod 541 can slide when the connecting rod 541 slides, and the movement of the connecting rod 541 is prevented from being inclined.

[0048] Further, the two guide holes 5411 are arranged on the connecting rod 541, the two guide columns 23 are arranged on the bottom cover 20, one guide column 23 is arranged in one guide hole 5411, the two guide holes 5411 are arranged, the connecting rod 541 is prevented from rotating during sliding, and the sliding direction of the connecting rod 541 is linearly limited by the two guide columns 23.

[0049] In addition, since the connecting rod 541 is arranged below the heating body 40, the heating body 40 expands during use, in order to avoid the expansion of the heating body 40 and to smoothly transmit the heat generated by the heating body 40, the connecting rod 541 is provided with the avoiding hole 5412 corresponding to the position of the heating body 40, so that the heat generated by the heating body 40 can be conveniently transmitted out through the avoiding hole 5412.

[0050] Please refer to Figure 5 and Figure 7 In one embodiment of the application, the middle part of the push rod 542 rotates relative to the bottom cover 20, the fixed frame 24 is arranged on the bottom cover 20, the middle part of the push rod 542 is rotatably connected to the fixed frame 24, the bottom of the second buckle 513 is provided with the first recess 5135, the top of the connecting rod 541 is provided with the second recess 5413, and the push rod 542 rotates in the first recess 5135 and the second recess 5413, respectively. Specifically, the bottom of the abutting frame 5133 is provided with the first recess 5135, so that when the push rod 542 rotates relative to the bottom cover 20, the push rod 542 can rotate relative to the connecting rod 541 and the second buckle 513, and the sliding of the connecting rod 541 is converted into the sliding of the second buckle 513, so as to press one buckle and realize the unlocking of the two buckles on the handle 30.

[0051] Further, in order to conveniently realize the pressing of one buckle and the sliding of the two buckles, the pushing convex point 5125 is arranged on the second buckle 513 in the embodiment, the pushing convex point 5125 is arranged on the first mounting plate 5121 and penetrates the bottom cover 20, so that the first buckle 512 is conveniently pushed to move towards the center of the bottom cover 20 by pressing the pushing convex point 5125.

[0052] In addition, in order to avoid the buckle from being separated from the bottom cover 20 when an external force presses the buckle too hard, the sub-frame 531 is provided with a limiting block 5311 on the side facing the elastic member 52. The limiting block 5311 is used to abut against the buckle when the buckle moves towards the center of the bottom cover 20, so as to limit the further movement of the buckle. Thus, since the sub-frame 531 and the bottom cover 20 are fixed, when the first buckle 512 and the second buckle 513 move towards the center of the bottom cover 20 by a certain distance, they are blocked by the limiting block 5311 and cannot continue to move. At this time, the handle 30 has been separated from the buckles, and the first buckle 512 and the second buckle 513 cannot slide into the bottom cover 20.

[0053] The use process of the electric heating lunch box 100 is as follows:

[0054] (1) Rotate the handle 30 relative to the bottom cover 20 to the vertical state;

[0055] (2) Place the upper cover 10 on the bottom cover 20. At this time, the first guide inclined surface 36 of the handle 30 cooperates with the second guide inclined surface 511 of the buckle, and the handle 30 smoothly slides downward;

[0056] (3) The downward sliding of the handle 30 presses the first buckle 512 and the second buckle 513 towards the center of the bottom cover 20, and the first buckle 512 and the second buckle 513 respectively compress the elastic members 52. The push rod 542 drives the connecting rod 541 to slide. When the handle 30 moves to the position, under the elastic force of the elastic members 52, the first buckle 512 and the second buckle 513 are pushed back, so that the first buckle 512 and the second buckle 513 are clamped in the clamping groove 33 of the handle 30. The connecting rod 541 and the push rod 542 also return to the original position. Thus, the locking of the handle 30 and the locking mechanism 50 is realized.

[0057] (4) When it is needed to open the upper cover 10, the hand presses the pushing protrusion 5125 on the first buckle 512, and the first buckle 512 moves towards the center of the bottom cover 20. The first buckle 512 drives the connecting rod 541 to move towards the second buckle 513. Under the driving of the connecting rod 541, the push rod 542 rotates relative to the bottom cover 20. The rotation of the push rod 542 drives the second buckle 513 to move towards the first buckle 512. At the same time, the elastic members 52 on both sides are compressed, the first buckle 512 and the second buckle 513 are unlocked relative to the handle 30, and the handle 30 and the upper cover 10 can be separated from the bottom cover 20. Under the elastic force of the elastic members 52, the first buckle 512 and the second buckle 513 are pushed back to the original position for the next use.

[0058] The technical means disclosed in the present application are not limited to the technical means disclosed in the above embodiments, and include technical solutions composed of any combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements are also considered within the scope of protection of the present application.

Claims

1. An electrically heated lunch box, characterized by The utility model provides a food warmer, which comprises: a bottom cover with a receiving cavity; a top cover for covering the bottom cover; a handle connected to the top cover; a heating body arranged between the bottom cover and the top cover and supported by the bottom cover for heating food; a locking mechanism accommodated in the receiving cavity and located below the heating body, which is slidingly connected to the bottom cover for locking the handle when the top cover covers the bottom cover or unlocking the handle under the action of an external force; the locking mechanism comprises a pair of buckles, a pair of elastic members and a mounting frame, the mounting frame is connected to the bottom cover, the pair of buckles are slidingly arranged on opposite sides of the bottom cover and are respectively used for clamping one end of the handle, and one elastic member is connected between the mounting frame and one buckle for applying an elastic force to the buckle; the mounting frame comprises two sub-frames, one elastic member is connected between one buckle and one sub-frame, and the locking mechanism further comprises a linkage structure, the linkage structure abuts against the two buckles respectively, so that when an external force presses one buckle towards the center of the bottom cover, the linkage structure can push the other buckle to move towards the center of the bottom cover at the same time, so that the two buckles unlock the handle.

2. The electrically heated bento box according to claim 1, characterized by the handle is rotatably connected to the top cover, so that when the handle and the locking mechanism are in the unlocked state, the handle can be rotated to one side of the top cover.

3. The electrically heated bento box according to claim 2, characterized by the handle is provided with a protrusion, the top cover is provided with a positioning clamping site, and when the protrusion is clamped in the positioning clamping site, the handle can be locked with the locking mechanism.

4. The electrically heated bento box according to claim 1, characterized by two buckles are defined as a first buckle and a second buckle, the linkage structure comprises a connecting rod and a push rod, the connecting rod is slidingly connected to the bottom cover and abuts against the first buckle, and the push rod is rotatably connected to the bottom cover and abuts against the second buckle and the connecting rod at both ends, so as to be rotatable relative to the connecting rod and the second buckle, respectively, so that when an external force presses the first buckle, the push rod can drive the second buckle to move.

5. The electrically heated bento box according to claim 4, characterized by the connecting rod is provided with a guide hole, the length direction of the guide hole is the movement direction of the first buckle or the second buckle, the bottom cover is provided with a guide column, the guide column is arranged in the guide hole and moves in the guide hole.

6. The electrically heated bento box according to claim 4, characterized by the bottom of the second buckle is provided with a first groove, the top of the connecting rod is provided with a second groove, and the push rod rotates in the first groove and the second groove, respectively.

7. The electrically heated bento box according to claim 4, characterized by the second buckle is provided with an embedding groove, and the sub-frame is embedded in the embedding groove.

8. The electrically heated bento box according to claim 4, characterized by the side of the sub-frame facing the elastic member is provided with a limiting block, and the limiting block abuts against the buckle when the buckle moves towards the center of the bottom cover, so as to limit the further movement of the buckle.

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