Self-heating device and self-heating bowl

Abstract

The utility model provides a self-heating device and a self-heating bowl, and relates to the technical field of self-heating. Comprising an upper shell and a lower shell rotationally connected with the upper shell, the lower shell is provided with a heating cavity used for containing a heating bag, the upper shell is provided with a liquid storage cavity, the end face, facing the lower shell, of the liquid storage cavity is provided with at least one liquid outlet, the liquid outlets are sealed through sealing plugs, and the sealing plugs are connected with the liquid storage cavity. A limiting part used for abutting against the sealing plug is arranged at the position, corresponding to the liquid outlet, of the lower shell, and the self-heating device is constructed to drive the upper shell to rotate relative to the lower shell in an operable mode, so that the sealing plug is far away from the limiting part and falls off from the liquid outlet; therefore, liquid in the liquid storage cavity is promoted to flow to the heating cavity from the liquid outlet. The problems that an existing self-heating structure is complex, high in cost and large in occupied space are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of self-heating, and in particular, to a self-heating device and a self-heating bowl. Background Art

[0002] For the rotary self-heating bowls on the market, generally two independent spaces are provided to separately contain a water bag and a heating pack. During the rotation process, the piercing unit or the blade part is used to pierce the water bag by using the height difference, so that the water in the water bag flows to the heating pack and generates a heating reaction with the heating pack. For example, a self-heating device and a self-heating can disclosed in Chinese Patent CN216154532U include a can body, which includes an upper can body and a lower can body; a liquid storage cavity is provided in the upper part or the middle part of the can body; a support platform is convexly provided on the inner wall of the lower can body, and a guiding inclined surface is provided on the support platform along the circumferential direction of the can body; a breakage unit that can move along the guiding inclined surface is also arranged at the support platform, the breakage unit is located below the liquid storage cavity, and a pointed part for piercing the liquid storage cavity is convexly provided on the upper part of the breakage unit; a heating pack is arranged in the heating cavity of the lower can body; an exhaust hole communicated with the heating cavity is provided on the can body; a guide rail mechanism for guiding the breakage unit to move in the vertical direction is provided between the breakage unit and the upper can body. In this solution, when the can body rotates, the breakage unit will rise along the guide rail mechanism to pierce the liquid storage cavity for heating. Among them, the structures such as the piercing unit and the guide rail mechanism for guiding the piercing unit are relatively complex, increasing the mold cost. At the same time, with the increase of the core-pulling and sliders on the mold, the size of the mold template increases, and a larger injection molding machine is required, which also means an increase in the injection molding cost. In addition, the heating structure is complex and occupies a large internal space of the heating can body, resulting in a larger size of the can body and weak market competitiveness. Summary of the Utility Model

[0003] The utility model discloses a self-heating device, aiming to improve the problems of complex structure, high cost and large occupied space of the existing self-heating structure.

[0004] The utility model adopts the following scheme:

[0005] A self-heating device includes an upper shell and a lower shell rotatably connected to the upper shell. The lower shell is provided with a heating cavity for placing a heating pack, and the upper shell is provided with a liquid storage cavity. At least one liquid outlet is provided on the end surface of the liquid storage cavity facing the lower shell. Among them, the liquid outlet is sealed by a sealing plug, and the lower shell is provided with a limiting part corresponding to the liquid outlet for abutting against the sealing plug. The self-heating device is configured to drive the upper shell to rotate relative to the lower shell in an operable manner, so that the sealing plug moves away from the limiting part and falls off from the liquid outlet, thereby promoting the liquid in the liquid storage cavity to flow from the liquid outlet to the heating cavity.

[0006] As a further improvement, two liquid outlets with different height positions are provided at the bottom of the liquid storage cavity. When the sealing plug falls off, the two liquid outlets respectively form an air inlet channel and a liquid outlet channel.

[0007] As a further improvement, a cavity wall extends downward inward from the inner wall surface of the upper shell. A liquid storage space is formed between the cavity wall and the inner wall surface of the upper shell. The open end of the liquid storage space is sealed by a bottom cover to form the liquid storage cavity, and the liquid outlet is provided on the bottom cover.

[0008] As a further improvement, the sealing plug includes a main body portion and a convex portion. The convex portion extends into the liquid outlet, and the size of the main body portion is larger than the size of the liquid outlet and abuts between the outer wall surface of the liquid storage cavity and the limiting portion.

[0009] As a further improvement, the limiting portion is provided as a column protruding along the inner wall of the lower shell.

[0010] As a further improvement, a first assembly portion is annularly provided on the outer wall surface of the upper shell. The open end of the lower shell is sleeved on the bottom of the upper shell and is provided with a second assembly portion adapted to the first assembly portion. The first assembly portion and the second assembly portion are engaged to axially limit the upper shell and the lower shell.

[0011] As a further improvement, a fastener and a lock body are respectively provided on the outer wall surfaces of the upper shell and the lower shell. The fastener and the lock body are locked to limit the relative rotation of the two shells.

[0012] As a further improvement, the fastener is provided with a first clamping portion and a first positioning portion. The lock body is correspondingly provided with a second clamping portion and a second positioning portion for the first clamping portion and the first positioning portion. The fastener is driven to bend downward in an operable manner so that the first clamping portion and the second clamping portion are clamped, and the first positioning portion and the second positioning portion are correspondingly engaged and circumferentially limited, so that the two shells are locked; or the two shells are unlocked by lifting the fastener so that the first clamping portion and the second clamping portion are disengaged, and the first positioning portion is away from the second positioning portion.

[0013] As a further improvement, the fastener is provided with a bending portion near the outer wall of the shell. The bending portion is recessed inward from the side of the fastener facing the lock body to form a bent thin wall.

[0014] Another self-heating bowl is provided, which includes a bowl body, a bowl cover, and the self-heating device as described in any one of the above. Among them, the bowl body is sleeved on the upper shell, the liquid storage cavity is arranged along the circumference of the bowl body, and the bowl cover is openably covered above the bowl body.

[0015] By adopting the above technical solutions, the utility model can achieve the following technical effects:

[0016] 1. When the user needs to heat, rotate the self-heating device by hand to make the upper shell rotate relative to the lower shell. After the sealing plug moves away from the limiting part, it falls off from the liquid outlet under the action of its own gravity and the liquid pressure in the liquid storage cavity, that is, the liquid outlet is opened, and the liquid in the liquid storage cavity flows into the heating cavity and reacts with the heating pack to achieve self-heating. Among them, compared with the prior art, only a sealing plug needs to be arranged at the liquid outlet, and a limiting part for abutting against the sealing plug is arranged on the lower shell, so that the liquid in the liquid storage cavity can flow into the heating cavity by rotating the upper shell. There is no need to set up a height difference guide rail mechanism and a puncturing unit, the structure is simple, the die design difficulty is small, and the cost of the die and parts can be reduced. At the same time, the structure occupies a small space, so that the volume of the self-heating device can be correspondingly reduced, thereby adapting to self-heating bowls of different volumes and improving the market competitiveness.

[0017] 2. Two liquid outlets with different height positions are arranged at the bottom of the liquid storage cavity. When the sealing plug falls off, the two liquid outlets respectively form an air inlet channel and a liquid outlet channel. Specifically, the liquid outlet at the higher position can be used as an air inlet channel during the liquid outflow process, and the liquid outlet at the lower position forms a liquid outlet channel during the liquid outflow process, realizing air intake while liquid outflow to ensure the liquid outflow speed in the liquid storage cavity and ensure the self-heating efficiency.

[0018] 3. Fasteners and locks are respectively arranged on the outer wall surfaces of the upper shell and the lower shell, and the fasteners and the locks are locked to limit the relative rotation of the two shells. This is used to avoid the problem of scalding users caused by misoperation, especially to avoid misoperation by children. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 and Figure 2 are cross-sectional views of one embodiment of the present utility model along different sections;

[0021] Figure 3 is Figure 1 the structural schematic diagram when the fastener and the lock in

[0022] Figure 4 are unlocked;

[0023] Figure 5 This is a schematic structural diagram of an upper housing of one embodiment of the utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the bottom cover of one embodiment of the utility model;

[0025] Figure 7 This is a schematic structural diagram of the lower housing of one embodiment of the utility model;

[0026] Figure 8 It is a structural schematic diagram of a sealing plug in one embodiment of the utility model;

[0027] icon:

[0028] 1-upper shell; 11-liquid storage chamber; 111-liquid outlet; 12-chamber wall; 13-bottom cover; 14-first assembly part; 15-fastener; 151-first clamping part; 152-first positioning part; 153-bending part;

[0029] 2-lower housing; 21-heating chamber; 22-limiting portion; 23-second assembly portion; 24-lock body; 241-second clamping portion; 242-second positioning portion; 25-anti-slip pattern;

[0030] 3-sealing plug; 31-main body; 311-step surface; 32-convex part;

[0031] 4-bowl body;

[0032] 5-Bowl cover. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Example

[0034] Combination Figures 1 to 8, this embodiment provides a self-heating device, including an upper housing 1 and a lower housing 2 rotatably connected to the upper housing 1. The lower housing 2 is provided with a heating chamber 21 for placing a heating pack. The upper housing 1 is provided with a liquid storage chamber 11. At least one liquid outlet 111 is provided on the end face of the liquid storage chamber 11 facing the lower housing 2. Among them, the liquid outlet 111 is sealed by a sealing plug 3. The lower housing 2 is provided with a limiting portion 22 for abutting against the sealing plug 3 corresponding to the liquid outlet 111. The self-heating device is configured to drive the upper housing 1 to rotate relative to the lower housing 2 in an operable manner, so that the sealing plug 3 moves away from the limiting portion 22 and falls off from the liquid outlet 111, thereby prompting the liquid in the liquid storage chamber 11 to flow from the liquid outlet 111 to the heating chamber 21.

[0035] Exemplarily, when the user needs to heat, rotate the self-heating device by hand to make the upper housing 1 rotate relative to the lower housing 2. After the sealing plug 3 moves away from the limiting portion 22, it is affected by its own gravity and the liquid pressure in the liquid storage chamber 11 and falls off from the liquid outlet 111, that is, the liquid outlet 111 is opened, and the liquid in the liquid storage chamber 11 flows into the heating chamber 21 and reacts with the heating pack to achieve self-heating.

[0036] It should be noted that in this embodiment, only by setting a sealing plug 3 on the liquid outlet 111 and a limiting portion 22 for abutting against the sealing plug 3 on the lower housing 2, the liquid in the liquid storage chamber 11 can be made to flow into the heating chamber 21 by rotating the upper housing 1. There is no need to set a height difference guide rail mechanism and a puncturing unit, the structure is simple, and the die design difficulty is small, which can reduce the cost of the die and parts. At the same time, the structure occupies a small space, so that the volume of the self-heating device can be correspondingly reduced, thereby adapting to self-heating bowls of different volumes and improving market competitiveness.

[0037] In a preferred embodiment, two liquid outlets 111 with different height positions are provided at the bottom of the liquid storage chamber. When the sealing plug 3 falls off, the two liquid outlets 111 respectively form an air inlet channel and a liquid outlet channel. Specifically, the height of the limiting portion 22 is also set to different heights accordingly. The liquid outlet 111 at the higher position can be used as an air inlet channel during the liquid outflow process, and the liquid outlet 111 at the lower position forms a liquid outlet channel during the liquid outflow process, realizing air intake while liquid outflow to ensure the liquid outflow speed in the liquid storage chamber 11 and ensure the self-heating efficiency. The liquid in the liquid storage chamber 11 is preferably water, and the heating pack is preferably a lime heating pack, but it is not limited to this and no specific limitation is made.

[0038] Furthermore, a cavity wall 12 is provided extending inward and downward from the inner wall surface of the upper shell 1, and a liquid storage space is formed between the cavity wall 12 and the inner wall surface of the upper shell 1. The open end of the liquid storage space is sealed by a bottom cover 13 to form a liquid storage cavity 11, and a liquid outlet 111 is provided on the bottom cover 13. The bottom cover 13, the cavity wall 12 and the upper shell 1 can be fixed and sealed by gluing or welding. In other embodiments, the bottom cover 13 can also be provided as a soft rubber part.

[0039] On the basis of the above embodiments, in an optional embodiment of the utility model, the sealing plug 3 includes a main body 31 and a convex part 32, the convex part 32 is extended in the liquid outlet 111, the size of the main body 31 is larger than the size of the liquid outlet 111, and is disposed between the outer wall surface of the liquid storage chamber 11 and the limiting part 22. Preferably, the material of the sealing plug 3 is silicone or rubber, the cross section of the sealing plug 3 is formed in a convex shape, a step surface 311 is formed between the main body 31 and the convex part 32, and the limiting part 22 abuts against the bottom surface of the main body 31, so that the step surface 311 abuts against the outer wall of the bottom cover 13, and the convex part 32 is sealed with the inner wall of the liquid outlet 111 and the step surface 311 abuts against the outer wall of the bottom cover 13 to achieve a double sealing effect, thereby preventing leakage, avoiding failure of the heating pack and safety problems. Among them, the wall surface of the convex part 32 is a straight surface, so that the sealing plug 3 falls off after being away from the limiting part 22.

[0040] Preferably, the limiting portion 22 is configured as a column protruding along the inner wall of the lower shell 2, wherein the top surface of the limiting portion 22 is used to abut against the sealing plug 3. A first assembly portion 14 is provided on the outer wall of the upper shell 1, and the open end of the lower shell 2 is sleeved on the bottom of the upper shell 1, and a second assembly portion 23 adapted to the first assembly portion 14 is provided. The first assembly portion 14 is engaged with the second assembly portion 23 to limit the upper shell 1 and the lower shell 2 in the axial direction. Exemplarily, the first assembly portion 14 is configured as a recessed groove along the outer wall of the upper shell 1, and the second assembly portion 23 is configured as an arc-shaped undercut protruding along the inner wall of the lower shell 2. During assembly, after the two shells are aligned, the lower shell 2 can be pressed into the upper shell 1, which is convenient and fast, easy to assemble, and can improve production efficiency.

[0041] On the basis of the above-mentioned embodiment, in an optional embodiment of the utility model, a fastener 15 and a lock body 24 are respectively provided on the outer wall surfaces of the upper shell 1 and the lower shell 2, and the fastener 15 and the lock body 24 are locked to limit the relative rotation of the two shells. For example, the cavity wall 12 and the upper shell 1 are integrally formed, and the bottom cover 13 is fixedly connected to the upper shell 1 by ultrasonic welding. When installing, first inject liquid from the liquid outlet 111, then insert the sealing plug 3 into the liquid outlet 111, and then buckle the lower shell 2 with the heating pack placed thereon with the upper shell 1, so that the limiting part 22 abuts against the sealing plug 3, and finally buckle the fastener 15 and the lock body 24, thereby avoiding the problem of users being scalded by misoperation.

[0042] In a specific embodiment, the fastener 15 can be bent and is provided with a first clamping portion 151 and a first positioning portion 152. The lock body 24 is provided with a second clamping portion 241 and a second positioning portion 242 corresponding to the first clamping portion 151 and the first positioning portion 152. The fastener 15 is driven to bend downward in an operable manner so that the first clamping portion 151 is engaged with the second clamping portion 241, and the corresponding first positioning portion 152 is embedded with the second positioning portion 242 and limited circumferentially, so that the two shells are locked; or the fastener 15 is opened to disengage the first clamping portion 151 from the second clamping portion 241, and the corresponding first positioning portion 152 is away from the second positioning portion 242, so that the two shells are unlocked.

[0043] Exemplarily, the fastener 15 is integrally formed with the upper shell 1, and the lock body 24 is integrally formed with the lower shell 2. Before packaging, the fastener 15 is bent downward to make the first clamping portion 151 engage with the second clamping portion 241, and the first positioning portion 152 engage with the second positioning portion 242, thereby limiting the relative rotation of the two shells. When the user needs self-heating, the fastener 15 needs to be opened first to make the first clamping portion 151 away from the second clamping portion 241. At this time, the first positioning portion 152 is also separated from the second positioning portion 242 so that the two shells can rotate relative to each other. Therefore, without opening the fastener 15, the user cannot rotate the shell, and this structure can especially prevent children from operating it by mistake.

[0044] In a preferred embodiment, the buckle 15 is provided with a bending portion 153 near the outer wall of the housing, and the bending portion 153 is recessed inward from the buckle 15 toward the lock body 24 to form a thin bending wall. The thin wall at the bending portion 153 makes the buckle 15 bendable, which is convenient for assembly. When the tail end of the buckle 15 is bent by hand, the outer peripheral surface of the buckle 15 bends along with the bending portion 153.

[0045] A self-heating bowl is also provided, comprising a bowl body 4, a bowl cover 5 and a self-heating device as described in any of the above embodiments, wherein the bowl body 4 is sleeved on the upper shell 1, the liquid storage chamber 11 is arranged along the circumference of the bowl body 4, and the bowl cover 5 is an openable cover arranged above the bowl body 4. Food or beverage is placed in the bowl body 4, and the opening is sealed by a film. The arrangement of the liquid storage chamber 11 along the circumference of the bowl body 4 can save structural space, making the structure of the self-heating bowl more compact. Preferably, the outer wall surface of the lower shell 2 is formed with anti-slip grooves 25 arranged vertically, which is convenient for users to apply force. When in use, the user rotates the lower shell 2 to make the sealing plug 3 on the liquid outlet 111 fall off, so that the liquid in the liquid storage chamber 11 flows into the heating chamber 21, and reacts with the heating bag in the heating chamber 21 for heating, so that the food or beverage in the bowl body 4 is quickly heated, which is convenient for users to use.

[0046] The above are only the preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model.

Claims

1. A self-heating device, characterized in that: It includes an upper shell and a lower shell rotatably connected to the upper shell, the lower shell is provided with a heating chamber for placing a heating pack, the upper shell is provided with a liquid storage chamber, and the liquid storage chamber has at least one liquid outlet on the end face facing the lower shell, wherein the liquid outlet is sealed via a sealing plug, and the lower shell is provided with a limiting portion corresponding to the liquid outlet for abutting the sealing plug, and the self-heating device is constructed to drive the upper shell to rotate relative to the lower shell in an operable manner, so that the sealing plug is away from the limiting portion and falls off the liquid outlet, thereby prompting the liquid in the liquid storage chamber to flow from the liquid outlet to the heating chamber.

2. The self-heating device according to claim 1, characterized in that: The bottom of the liquid storage cavity is provided with two liquid outlets at different heights. When the sealing plug falls off, the two liquid outlets respectively form an air inlet channel and a liquid outlet channel.

3. The self-heating device according to claim 1, characterized in that: A cavity wall is extended inwardly and downwardly from the inner wall surface of the upper shell, and a liquid storage space is formed between the cavity wall and the inner wall surface of the upper shell. The open end of the liquid storage space is sealed by a bottom cover to form the liquid storage cavity, and the liquid outlet is arranged on the bottom cover.

4. The self-heating device according to claim 1, characterized in that: The sealing plug includes a main body and a convex portion, wherein the convex portion extends into the liquid outlet, the main body has a size larger than that of the liquid outlet, and is disposed between the outer wall surface of the liquid storage cavity and the limiting portion.

5. The self-heating device according to claim 1, characterized in that: The limiting portion is configured as a column protruding along the inner wall of the lower shell.

6. The self-heating device according to claim 1, characterized in that: A first assembly portion is provided on the outer wall surface of the upper shell body, the open end of the lower shell body is sleeved on the bottom of the upper shell body, and a second assembly portion adapted to the first assembly portion is provided, and the first assembly portion is engaged with the second assembly portion to limit the upper shell body and the lower shell body along the axial direction.

7. The self-heating device according to any one of claims 1 to 6, characterized in that: A fastener and a lock body are respectively arranged on the outer wall surfaces of the upper shell and the lower shell, and the fastener and the lock body are locked to limit the relative rotation of the two shells.

8. The self-heating device according to claim 7, characterized in that: The fastener is provided with a first clamping portion and a first positioning portion, and the lock body is provided with a second clamping portion and a second positioning portion corresponding to the first clamping portion and the first positioning portion. The fastener is driven to bend downward in an operable manner so that the first clamping portion is engaged with the second clamping portion, and the first positioning portion is embedded with the second positioning portion and limited circumferentially, so that the two shells are locked; or the fastener is opened to disengage the first clamping portion from the second clamping portion, and the first positioning portion is moved away from the second positioning portion, so that the two shells are unlocked.

9. The self-heating device according to claim 8, characterized in that: The buckle is provided with a bending portion near the outer wall of the shell, and the bending portion is concavely arranged inwardly from the buckle toward the lock body side to form a bent thin wall.

10. A self-heating bowl, characterized in that: It comprises a bowl body, a bowl cover and a self-heating device as described in any one of claims 1 to 9, wherein the bowl body is placed on the upper shell, the liquid storage cavity is arranged along the circumference of the bowl body, and the bowl cover is an openable and closable cover arranged above the bowl body.

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