A self-heating device

Abstract

The utility model relates to a self -heating equipment technical field especially, relates to a kind of self -heating device. Including upper cup body and lower cup body, upper cup body is arranged at the upper end of lower cup body, and the opening for being heated container and water package is set in the opening of upper cup body upper end, the opening for being set in the opening of self -heating package of lower cup body upper end, space for being set in the space of self -heating package in lower cup body, upper cup body and lower cup body are equipped with puncture component between, puncture component is located between water package and self -heating package, puncture component includes upper puncture knife and lower puncture knife, the upper puncture knife for puncturing the sealing membrane of water package towards water package, the lower puncture knife for puncturing the sealing membrane of self -heating package towards self -heating package, upper cup body and lower cup body rotation connection, further include sliding structure, sliding structure realizes upper cup body or lower cup body rotation, the mutual approach or separation of upper puncture knife and lower puncture knife, upper puncture knife and lower puncture knife respectively break the sealing membrane on water package and self -heating package, it is easy to operate and need not to bring water source.

Description

Technical Field

[0001] This utility model relates to the field of self-heating equipment technology, and in particular to a self-heating device. Background Technology

[0002] In daily life, when people want to eat hot canned food (such as beverages or eight-treasure porridge), they usually need to use a heating device to heat the canned food. However, heating devices generally require electricity or open flames. In the wild or in public places, it is inconvenient to use electricity or open flames. At this time, a self-heating device is needed to heat the food.

[0003] Most existing self-heating devices require a water source. After turning on the heater, water is poured into the self-heating pack (the main reactant is quicklime) to achieve an exothermic reaction. Then, the object to be heated is placed on the top layer of the self-heating pack for heating. The operation is cumbersome and the safety factor is not high. When the heater is overturned, it is easy to burn the operator. Summary of the Invention

[0004] To address the issues of existing self-heating devices requiring a water source and being cumbersome to operate, this invention proposes a self-heating device. The upper cup contains a water pack, and the lower cup contains a self-heating pack. A sliding structure allows the upper and lower piercing blades to move closer or further apart as the upper or lower cup rotates, and to pierce the sealing film on the water pack and the self-heating pack respectively. This device is easy to operate and requires no external water source.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: A self-heating device includes an upper cup body and a lower cup body. The upper cup body is positioned above the lower cup body and has an opening at its upper end for inserting a container to be heated and a water bag. The upper cup body has a space for inserting the container to be heated and the water bag. The lower cup body has an opening at its upper end for inserting a self-heating pack. The lower cup body has a space for inserting the self-heating pack. A piercing component is provided between the upper and lower cup bodies, located between the water bag and the self-heating pack. The piercing component includes an upper piercing blade and a lower piercing blade. The upper piercing blade facing the water bag is used to pierce the sealing film of the water bag, and the lower piercing blade facing the self-heating pack is used to pierce the sealing film of the self-heating pack. The upper and lower cup bodies are rotatably connected. The device also includes a sliding structure, which allows the upper and lower piercing blades to move closer or further apart when the upper or lower cup body rotates.

[0006] Preferably, the piercing assembly includes an upper piercing body and a lower piercing body. The upper piercing body is located inside the upper cup body, and the lower piercing body is located inside the lower cup body. The upper piercing body is provided with an upper piercing blade, a first limiting rod, and a limiting cylinder from top to bottom. The lower piercing body is provided with a second limiting rod and a lower piercing blade from top to bottom. The sliding structure includes a spiral first limiting rib fixed to the outside of the limiting cylinder, a limiting plate fixed inside the upper cup body, a fixing rod fixed to the limiting cylinder, a first limiting block fixed to the upper end of the second limiting rod, and a spiral second limiting rib fixed to the inside of the lower cup body. The end of the second limiting rod contacts the side of the second limiting rib, the end of the limiting plate contacts the side of the first limiting rib, and the first limiting block contacts the fixing rod. The side of the first limiting block that contacts the fixing rod is an inclined surface. The lower piercing body is placed directly on the self-heating pack, and the upper piercing body is placed on the lower piercing body. The first limiting rod is located above the limiting plate.

[0007] Preferably, a limiting post is fixed to the inner side of the upper cup body, the upper puncture body is located inside the limiting post, the limiting plate is fixed to the side of the limiting post near the upper puncture body, and the end of the limiting plate extends inward and contacts the side of the first limiting rib.

[0008] Preferably, a blocking part is fixed to the upper end of the first limiting block to prevent the fixing rod from separating directly from the first limiting block.

[0009] Preferably, a first limiting part is fixed to the side of the limiting post near the upper piercing body, and the first limiting part is located above the first limiting rod. This reduces the probability that the upper piercing knife will directly pierce the sealing film of the water bag.

[0010] Preferably, the lower end of the second limiting rod is fixed with a support rod, and the lower end of the support rod contacts the sealing film on the self-heating pack.

[0011] Preferably, the piercing assembly includes an upper piercing body and a lower piercing body, the upper piercing body being located inside the upper cup body and the lower piercing body being located inside the lower cup body. The upper piercing body is provided with an upper piercing knife and a third limiting rod from top to bottom, and the lower piercing body is provided with a fourth limiting rod and a lower piercing knife from top to bottom. The sliding structure includes a second limiting block fixed to the lower end of the third limiting rod, a third limiting block fixed to the upper end of the fourth limiting rod, a first limiting member fixed inside the upper cup body, and a second limiting member fixed inside the lower cup body. The first limiting member is located on the lower side of the water pack and is used to limit the third limiting rod. The third limiting member is located on the upper side of the self-heating pack and is used to limit the fourth limiting rod. The side of the second limiting block that contacts the third limiting block is a first inclined section.

[0012] Preferably, the first limiting member includes two vertically arranged first limiting strips fixed to the inner side of the upper cup body, and a gap is provided between the two first limiting strips for the end of the third limiting rod to extend into; so that the third limiting rod can only move vertically up and down between the two first limiting strips; the second limiting member includes two vertically arranged second limiting strips fixed to the inner side of the lower cup body, and a gap is provided between the two second limiting strips for the end of the fourth limiting rod to extend into; so that the fourth limiting rod can only move vertically up and down between the two second limiting strips.

[0013] Preferably, the first limiting member includes a third limiting rib fixed to the inner side of the upper cup body, the third limiting rib being spiral-shaped, and the end of the third limiting rod contacting the side of the third limiting rib; the second limiting member includes a fourth limiting rib fixed to the inner side of the lower cup body, the fourth limiting rib being spiral-shaped, and the end of the fourth limiting rod contacting the side of the fourth limiting rib.

[0014] Preferably, the first inclined section of the third limiting block is provided with a horizontal part.

[0015] Preferably, a support rod is fixed to the upper end of the third limiting rod, the upper end of the support rod being higher than the upper piercing knife, and a support rod is fixed to the lower end of the fourth limiting rod, the lower end of the support rod contacting the sealing film on the self-heating pack. This reduces the direct impact of the upper and lower piercing knives on the sealing film of the water pack and the self-heating pack.

[0016] Preferably, the upper cup body extends into the lower cup body, and the piercing assembly includes an upper piercing body and a lower piercing body. The upper piercing body includes a fifth limiting rod placed inside the lower cup body and an upper piercing knife fixed to the upper end of the fifth limiting rod. The lower piercing body includes a lower piercing knife fixed to the lower end of the upper cup body. The sliding structure includes a first limiting protrusion fixed to the inner side wall of the lower cup body and a second limiting protrusion fixed to the outer side wall of the upper cup body. There is a gap between the two ends of the first limiting protrusion, and the lower end face of the second limiting protrusion contacts the upper end face of the first limiting protrusion.

[0017] Preferably, the upper cup body extends into the lower cup body. The piercing assembly includes an upper piercing knife, a fifth limiting rod, and a lower piercing knife arranged sequentially from top to bottom. The upper piercing knife is fixed to the upper side of the fifth limiting rod, and the lower piercing knife is fixed to the lower side of the fifth limiting rod. A support rod is fixed to the lower side of the fifth limiting rod, and the lower end of the support rod contacts the sealing film on the self-heating pack. The sliding structure includes a first limiting protrusion fixed to the inner wall of the lower cup body and a second limiting protrusion fixed to the outer wall of the upper cup body. There is a gap between the two ends of the first limiting protrusion, and the lower end face of the second limiting protrusion contacts the upper end face of the first limiting protrusion.

[0018] Preferably, the end of the first limiting protrusion is provided with a second inclined section. This allows the upper cup to fall slowly within the lower cup, improving the piercing effect of the piercing knife on the sealing film.

[0019] Preferably, a limiting protrusion strip is fixed to the upper end of the first limiting protrusion. This reduces the probability that the upper cup body will fall directly into the lower cup body.

[0020] Preferably, a limit stop is fixed to the upper end of the first limiting protrusion.

[0021] The beneficial effects of this utility model through the above technical solution are as follows: 1. In the first self-heating device of this utility model, when the upper or lower cup body is rotated, the second limiting rib on the inner side of the lower cup body drives the first limiting block to rotate. During the process of the inclined surface on the first limiting block contacting the fixed rod, the end of the limiting plate contacts the side of the first limiting rib, causing the fixed rod to rise on the inclined surface, thereby piercing the sealing film of the water bag on the upper piercing knife. When the fixed rod contacts the blocking part, it is resisted, and the upper piercing body no longer rises or rotates. However, the upper piercing body is still affected by the lower piercing body at this time. The resistance experienced by the upper piercing body causes the second limiting rod to tilt downward along the second limiting rib. During the downward movement of the upper piercing body, the lower piercing knife pierces the sealing film on the self-heating bag. The water reacts with the reactants in the self-heating bag and releases heat to heat the container to be heated. The operation is relatively simple and the water bag is directly provided in the upper cup body, eliminating the need for a water source, making it more convenient to use.

[0022] 2. In the second type of self-heating device of this utility model, when the upper or lower cup body is rotated, the first inclined section of the second limiting block and the third limiting block come into contact. In order to continue to follow the upper and lower cup bodies to rotate again, the first inclined section of the second limiting block and the third limiting block undergoes relative displacement, causing the upper and lower piercing bodies to move away from each other. The upper and lower piercing blades respectively puncture the sealing film on the water bag and the self-heating bag. The water reacts with the reactants in the self-heating bag and releases heat to heat the container to be heated. The operation is relatively simple and the water bag is directly provided in the upper cup body, so there is no need to bring your own water source, making it more convenient to use.

[0023] 3. In the third type of self-heating device of this utility model, when the upper or lower cup body is rotated, the first inclined section of the second limiting block and the third limiting block come into contact. In order to continue to follow the upper and lower cup bodies to rotate again, the first inclined section of the second limiting block and the third limiting block are relatively displaced, so that the third limiting rod goes upward along the third limiting rib and the fourth limiting rod goes downward along the fourth limiting rib. The upper piercing knife and the lower piercing knife respectively cut the sealing film on the water bag and the self-heating bag. The water reacts with the reactants in the self-heating bag and releases heat to heat the container to be heated. The operation is relatively simple and the water bag is directly provided in the upper cup body, so there is no need to bring your own water source, which makes it more convenient to use.

[0024] 4. In the fourth type of self-heating device of this utility model, when the upper or lower cup body is rotated, the second limiting protrusion in the upper cup body rotates on the first limiting protrusion in the lower cup body. After the second limiting protrusion enters the second inclined section, the upper cup body begins to move downward in the lower cup body. The upper piercing knife and the lower piercing knife respectively puncture the sealing film on the water pack and the self-heating pack. The water reacts with the reactants in the self-heating pack and releases heat to heat the container to be heated. The operation is relatively simple and the water pack is directly provided in the upper cup body, so there is no need to bring your own water source, making it more convenient to use. Attached Figure Description

[0025] Figure 1 This is a structural cross-sectional view of the first self-heating device of this utility model; Figure 2 For the present utility model Figure 1 Enlarged view of the structure at point A in the middle; Figure 3 This is a schematic diagram of the structure of the upper piercing body, lower piercing body, and lower cup body of the first self-heating device of this utility model; Figure 4 This is a top view of the upper puncture body of the first self-heating device of this utility model; Figure 5 This is a top view of the lower puncture body of the first self-heating device of this utility model; Figure 6 This is a structural cross-sectional view of the second type of self-heating device of this utility model; Figure 7 This is a top view of the upper puncture body of the second type of self-heating device of this utility model; Figure 8 This is a top view of the lower puncture body of the second self-heating device of this utility model; Figure 9 This is a cross-sectional view of the structure of the third self-heating device of this utility model; Figure 10 This is a cross-sectional view of the upper puncture body of the third self-heating device of this utility model; Figure 11 This is a top view of the upper puncture body of the third self-heating device of this utility model; Figure 12 This is a cross-sectional view of the lower puncture body of the third self-heating device of this utility model; Figure 13 This is a top view of the lower puncture body of the third self-heating device of this utility model; Figure 14 This is a cross-sectional view of the fourth self-heating device of this utility model. Figure 1 ; Figure 15 This is a cross-sectional view of the lower cup body of the fourth self-heating device of this utility model; Figure 16This is a cross-sectional view of the fourth self-heating device of this utility model. Figure 2 ; Figure 17 This utility model Figure 16 Enlarged view of the structure at point B; Figure 18 This is a top view of the upper puncture body of the fourth self-heating device of this utility model; Figure 19 This is a structural cross-sectional view of another embodiment of the fourth self-heating device of this utility model.

[0026] In the attached diagram, the numbers are as follows: 1 is the upper cup body, 2 is the lower cup body, 3 is the container to be heated, 4 is the water bag, 5 is the self-heating bag, 6 is the upper piercing knife, 7 is the lower piercing knife, 8 is the lid, 9 is the first support protrusion, and 10 is the cup lid. 11 is the first limiting rod, 12 is the limiting cylinder, 121 is the first limiting rib, 122 is the limiting plate, 123 is the fixing rod, 13 is the second limiting rod, 14 is the first limiting block, 141 is the inclined surface, 142 is the blocking part, 15 is the second limiting rib, 16 is the limiting post, 161 is the first limiting part, 17 is the fixing ring, and 19 is the support rod; 21 is the third limiting rod, 22 is the fourth limiting rod, 23 is the second limiting block, 24 is the third limiting block, 241 is the horizontal part, 25 is the first limiting strip, and 26 is the second limiting strip; 31 is the third limiting rib, and 32 is the fourth limiting rib; 41 is the fifth limiting rod, 42 is the first limiting protrusion, 421 is the second inclined section, 43 is the second limiting protrusion, 44 is the limiting protrusion, 45 is the limiting stop bar, 51 is the second support protrusion, 52 is the second limiting part, and 53 is the third limiting part. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: like Figures 1-5 As shown, this embodiment provides a first self-heating device, including an upper cup body 1 and a lower cup body 2. The upper cup body 1 is disposed at the upper end of the lower cup body 2. The upper end of the upper cup body 1 has an opening for the container to be heated 3 and the water bag 4 to be inserted. The upper cup body 1 has a space for the container to be heated 3 and the water bag 4 to be inserted. The upper end of the lower cup body 2 has an opening for the self-heating pack 5 to be inserted. The lower cup body 2 has a space for the self-heating pack 5 to be inserted.

[0028] Both the water pack 4 and the self-heating pack 5 include a box body, which is sealed to store water or heating material. The shape of the box body is similar to that of the eight-cup yogurt box in the prior art. The box body itself has a certain strength and can maintain a certain shape. At the same time, the opening of the box body is provided with an outwardly extending rigid sealing edge. The rigid sealing edge is used to heat-seal and fix the sealing film, so its thickness is greater than the thickness of the box body.

[0029] refer to Figure 1 Multiple first support protrusions 9 are evenly distributed along the inner circumference of the upper cup body 1. The lower end of the container 3 to be heated is placed on the first support protrusions 9. The lower end of the first support protrusions 9 is provided with a placement plate for placing the rigid sealing edge of the water bag 4. The outer circumference of the rigid sealing edge of the water bag 4 can contact the inner surface of the first support protrusions 9 to prevent the water bag 4 from moving within the upper cup body 1. In another possible embodiment, the box of the water bag 4 can be directly integrally formed with the upper cup body 1, and the box can be sealed after being filled with water.

[0030] A piercing assembly is provided between the upper cup body 1 and the lower cup body 2. The piercing assembly is located between the water pack 4 and the self-heating pack 5. The piercing assembly includes an upper piercing knife 6 and a lower piercing knife 7. The upper piercing knife 6 facing the water pack 4 is used to pierce the sealing film of the water pack 4, and the lower piercing knife 7 facing the self-heating pack 5 is used to pierce the sealing film of the self-heating pack 5. Both the upper piercing knife 6 and the lower piercing knife 7 are hollow annular rings.

[0031] refer to Figures 1-5 The piercing assembly includes an upper piercing body and a lower piercing body. The upper piercing body is located inside the upper cup body 1. From top to bottom, the upper piercing body is provided with an upper piercing knife 6, a first limiting rod 11, and a limiting cylinder 12. The upper piercing knife 6 is fixed to the upper end of the first limiting rod 11. The first limiting rod 11 can be in the shape of an "I", a "+", or a ring. The upper end of the limiting cylinder 12 is welded and fixed to the bottom surface of the first limiting rod 11. The limiting cylinder 12 is a hollow cylindrical body, and the axis of the limiting cylinder 12 coincides with the midpoint of the first limiting rod 11 (e.g., ...). Figure 4 ).

[0032] The lower piercing body is located inside the lower cup body 2. From top to bottom, the lower piercing body is provided with a second limiting rod 13 and a lower piercing knife 7. The lower piercing knife 7 is fixed to the lower end of the second limiting rod 13. The second limiting rod 13 can be in the shape of a "I" or a "+". In this embodiment, the limiting cylinder 12 can be placed directly on the top surface of the second limiting rod 13.

[0033] The upper cup body 1 and the lower cup body 2 are rotatably connected. The upper end of the lower cup body 2 and the lower end of the upper cup body 1 are connected by a buckle. The upper cup body 1 and the lower cup body 2 are also connected by a sliding structure. The sliding structure enables the upper piercing knife 6 and the lower piercing knife 7 to move closer or further apart when the upper cup body 1 or the lower cup body 2 rotates.

[0034] For details, please refer to Figure 1 and Figure 2 The sliding structure includes a spiral first limiting rib 121 fixed to the outside of the limiting cylinder 12, a limiting plate 122 fixed inside the upper cup body 1, a fixing rod 123 fixed to the limiting cylinder 12, a first limiting block 14 fixed to the upper end of the second limiting rod 13, and a spiral second limiting rib 15 fixed to the inside of the lower cup body 2.

[0035] refer to Figure 3 Four first limiting ribs 121 are arranged circumferentially on the outer side of the limiting cylinder 12. A limiting post 16 is fixed on the inner side of the upper cup body 1. The upper piercing body is located on the inner side of the limiting post 16. The limiting post 16 is fixed on the lower side of the placement plate at the lower end of the first support protrusion 9. The limiting plate 122 is fixed on the side of the limiting post 16 near the upper piercing body. The end of the limiting plate 122 extends inward and contacts the side of the first limiting rib 121. The fixing rod 123 is fixed to the inner side of the limiting cylinder 12, and the upper end of the second limiting rod 13 is fixed with a hollow annular fixing ring 17 (e.g., Figure 5 Four first limiting blocks 14 are evenly arranged circumferentially on one side of the inner circle of the fixing ring 17. The axis of the fixing ring 17 coincides with the midpoint of the second limiting rod 13, and the axis of the fixing ring 17 coincides with the axis of the limiting cylinder 12. In this embodiment, the inner diameter of the fixing ring 17 is equal to the inner diameter of the limiting cylinder 12, ensuring that the first limiting blocks 14 contact the side of the fixing rod 123 when the lower piercing body rotates.

[0036] The end of the second limiting rod 13 contacts the side of the second limiting rib 15. Four second limiting ribs 15 are evenly fixed on the inner circumference of the lower cup body 2. The lower piercing knife 7 at the lower end of the second limiting rod 13 can directly contact the sealing film at the upper end of the self-heating pack 5. Alternatively, a support rod 19 made of elastomer (rubber) can be fixed at the lower end of the second limiting rod 13. The lower end of the support rod 19 contacts the sealing film at the upper end of the heating pack 5, thus preventing the lower piercing knife 7 from directly cutting the sealing film.

[0037] The end of the limiting plate 122 contacts the side of the first limiting rib 121. The end of the limiting plate 122 can extend directly to contact the outer side of the limiting cylinder 12. The first limiting block 14 contacts the fixing rod 123. The side of the first limiting block 14 that contacts the fixing rod 123 is an inclined surface 141.

[0038] The upper end of the first limiting block 14 is fixed with a square blocking part 142 to prevent the fixing rod 123 from directly detaching from the first limiting block 14.

[0039] Furthermore, a first limiting part 161 (e.g., ...) is fixed on the side of the limiting post 16 near the upper piercing body. Figure 2), the first limiting part 161 is located above the first limiting rod 11, which can reduce the probability that the upper puncturing knife 6 directly contacts the sealing film at the lower end of the water bag 4 during transportation.

[0040] In this embodiment, the first limiting rod 11 and the second limiting rod 13 can be in a "one" shape or a "cross" shape. The upper puncturing knife 6 and the lower puncturing knife 7 are both in the shape of an internally hollow circular ring, and the limiting cylinder 12 is a cylindrical hollow cylinder, which will not block the downward flow of the water in the water bag 4 and can directly fall above the self-heating pack 5, and the heating effect after reaction is better.

[0041] When using the first self-heating device to heat the container to be heated 3, the user holds the upper cup body 1 with one hand and rotates the lower cup body 2 counterclockwise with the other hand. At this time, the second limiting rib 15 on the inner side of the lower cup body 2 drives the first limiting block 14 at the upper end of the second limiting rod 13 to rotate. During the process that the inclined surface 141 on the first limiting block 14 contacts the fixed rod 123, the end of the limiting plate 122 contacts the side surface of the first limiting rib 121, so that the fixed rod 123 rises on the inclined surface 141. During this process, the upper puncturing knife 6 cuts through the sealing film of the water bag 4. When the fixed rod 123 contacts the blocking part 142 and is subjected to a resistance force, the upper puncturing body no longer rises or rotates, but the upper puncturing body is still affected by the lower puncturing body at this time. The resistance force received by the upper puncturing body causes the second limiting rod 13 to start a relative downward inclined displacement along the second limiting rib 15. During the downward process of the upper puncturing body, the support rod 19 is deformed, and the lower puncturing knife 7 cuts through the sealing film on the self-heating pack 5, and the water flowing from above enters the self-heating pack 5 and reacts with the reactants therein to release heat to heat the container to be heated tank 3.

[0042] As Figures 6-8 shown, this embodiment provides a second self-heating device, which is different from the first self-heating device in that the container to be heated 3 is placed in the upper cup body 1 through a plurality of second support bumps 51 fixed on the inner side of the upper cup body 1. An annular groove is provided on the outer side surface of the lower end of the upper cup body 1. The lower end of the upper cup body 1 extends into the lower cup body 2. An annular convex block that can extend into the groove is fixed on the inner side of the upper end of the lower cup body 2. The cooperation between the convex block and the groove realizes the rotational connection between the upper cup body 1 and the lower cup body 2.

[0043] Refer to Figure 6 , the puncturing assembly includes an upper puncturing body and a lower puncturing body. The upper puncturing body is located in the upper cup body 1. The upper puncturing body is sequentially provided with an upper puncturing knife 6 and a third limiting rod 21 from top to bottom. The upper puncturing knife 6 is fixed on the top surface of the third limiting rod 21. The lower puncturing body is located in the lower cup body 2. The lower puncturing body is sequentially provided with a fourth limiting rod 22 and a lower puncturing knife 7 from top to bottom. The lower puncturing knife 7 is fixed on the bottom surface of the fourth limiting rod 22.

[0044] The sliding structure enables the upper piercing knife 6 and the lower piercing knife 7 to move closer or further apart when the upper cup body 1 or the lower cup body 2 rotates. The sliding structure includes a second limiting block 23 fixed to the lower end of the third limiting rod 21, a third limiting block 24 fixed to the upper end of the fourth limiting rod 22, a first limiting member fixed inside the upper cup body 1, and a second limiting member fixed inside the lower cup body 2. In this embodiment, the second limiting block 23 is fixed to the outside of the fixing ring 17 welded to the bottom surface of the third limiting rod 21, with the midpoint of the third limiting rod 21 coinciding with the axis of the fixing ring 17. The third limiting block 24 is fixed to the outside of the fixing ring 17 welded to the top surface of the fourth limiting rod 22, with the midpoint of the fourth limiting rod 22 coinciding with the axis of the fixing ring 17. The two fixing rings have the same outer diameter and coincident axes, allowing the second limiting block 23 and the third limiting block 24 to interfere with each other when in contact. In another possible embodiment, the second limiting block 23 and the third limiting block 24 can be simultaneously fixed to the inside of the fixing ring 17.

[0045] The first limiting member is located on the lower side of the water bag 4 and is used to limit the third limiting rod 21. Specifically, the first limiting member includes two vertically arranged first limiting strips 25 fixed to the inner side of the upper cup body 1, with a gap between the two first limiting strips 25 for the end of the third limiting rod 21 to extend into. The third limiting member is located on the upper side of the self-heating pack 5 and is used to limit the fourth limiting rod 22. Specifically, the second limiting member includes two vertically arranged second limiting strips 26 fixed to the inner side of the lower cup body 2, with a gap between the two second limiting strips 26 for the end of the fourth limiting rod 22 to extend into. The side of the second limiting block 23 that contacts the third limiting block 24 is the first inclined section. One side of the sealing film of the water bag 4 is placed on the top surface of the first limiting strip 25.

[0046] The upper end of the third limiting rod 21 is fixed with a support rod 19, the upper end of the support rod 19 is higher than the upper piercing knife 6, the lower end of the fourth limiting rod 22 is fixed with a support rod 19, the lower end of the support rod 19 contacts the sealing film on the self-heating pack 5, and the support rod 19 is made of an elastomer (rubber) and can be deformed.

[0047] When using the second type of self-heating device to heat the container 3, the user holds the upper cup 1 with one hand and rotates it clockwise, while holding the lower cup 2 with the other hand and rotating it counterclockwise. The first inclined section of the second limiting block 23 and the third limiting block 24 come into contact. At this time, in order to continue to rotate with the upper cup 1 and the lower cup 2, the first inclined section of the second limiting block 23 and the third limiting block 24 undergoes relative displacement, causing the upper and lower piercing bodies to move away from each other. During the rotation, the upper piercing knife 6 and the lower piercing knife 7 respectively puncture the sealing film on the water pack 4 and the self-heating pack 5, and the water flowing down from above enters the self-heating pack 5, reacts with the reactants therein to release heat and heat the container 3 to be heated.

[0048] like Figures 9-13 As shown, this embodiment provides a third type of self-heating device. The difference between this device and the second type lies in the difference between the first and second limiting components. The first limiting component includes four third limiting ribs 31 uniformly fixed to the inner side of the upper cup body 1. The third limiting ribs 31 are spiral-shaped, and the end of the third limiting rod 21 contacts the side of the third limiting rib 31. The second limiting component includes four fourth limiting ribs 32 uniformly fixed to the inner side of the lower cup body 2. The fourth limiting ribs 32 are spiral-shaped, and the end of the fourth limiting rod 22 contacts the side of the fourth limiting rib 32. Both the third limiting rod 21 and the fourth limiting rod 22 are in a cross shape (e.g., ...). Figure 11 and 13 The upper end of the third limiting rib 31 extends vertically upward, and one side of the sealing film of the water bag 4 is placed on the top surface of the third limiting rib 31.

[0049] In this embodiment, the second limiting block 23 is fixed to the inner side of the fixing ring 17 welded to the bottom surface of the third limiting rod 21 (e.g., Figure 10 The midpoint of the third limiting rod 21 coincides with the axis of the fixing ring 17, and the third limiting block 24 is fixed to the outside of the fixing ring 17 welded to the top surface of the fourth limiting rod 22 (e.g., Figure 12 The midpoint of the fourth limiting rod 22 coincides with the axis of the fixed ring 17, and the axes of the two fixed rings 17 coincide. In order to achieve mutual interference between the two limiting blocks 23 and the third limiting block 24, the inner diameter of the fixed ring 17 welded to the bottom surface of the third limiting rod 21 is larger than the outer diameter of the fixed ring 17 welded to the top surface of the fourth limiting rod 22.

[0050] When using the third self-heating device to heat the container 3, the user holds the upper cup 1 with one hand and rotates it clockwise, and holds the lower cup 2 with the other hand and rotates it counterclockwise. The first inclined section of the second limiting block 23 and the third limiting block 24 come into contact. At this time, in order to continue to rotate with the upper cup 1 and the lower cup 2, the first inclined section of the second limiting block 23 and the third limiting block 24 are relatively displaced, so that the third limiting rod 21 moves upward along the third limiting rib 31 and the fourth limiting rod 22 moves downward along the fourth limiting rib 32. During the rotation, the upper piercing knife 6 and the lower piercing knife 7 cut the sealing film on the water bag 4 and the self-heating bag 5 respectively. The water flowing down from above enters the self-heating bag 5 and reacts with the reactants therein to release heat and heat the container 3 to be heated.

[0051] Based on the second and third self-heating devices, a horizontal portion 241 is provided on the first inclined section of the third limiting block 24. By increasing the width of the third limiting block 24, the inclination of the first inclined section is reduced while maintaining the same height.

[0052] like Figures 14-18As shown, this embodiment provides a fourth type of self-heating device. The difference from the first type is that the upper cup body 1 extends into the lower cup body 2 and is rotatably connected to it. The piercing assembly includes an upper piercing body and a lower piercing body. The upper piercing body includes a fifth limiting rod 41 placed inside the lower cup body 2 and an upper piercing knife 6 fixed to the upper end of the fifth limiting rod 41. The fifth limiting rod 41 is placed inside the lower cup body 2 and located above the self-heating pack 5. The fifth limiting rod 41 is in the shape of a cross (e.g., ...). Figure 18 The lower piercing body 7 includes a lower piercing knife 7 fixed to the lower end of the upper cup body 1, and the lower piercing knife 7 is welded to the lower end of the first support protrusion 9.

[0053] In this embodiment, the box of the self-heating pack 5 can be directly integrally formed with the lower cup body 2, and the reaction material can be filled into the box and then sealed with plastic.

[0054] Furthermore, the sliding structure includes four first limiting protrusions 42 evenly distributed on the inner sidewall of the lower cup body 2 and four second limiting protrusions 43 evenly distributed on the outer sidewall of the upper cup body 1. The two ends of the first limiting protrusions 42 are spaced apart; in this embodiment, there is a gap between two first limiting protrusions 42. The lower end face of the second limiting protrusion 43 contacts the upper end face of the first limiting protrusion 42. In this embodiment, the first limiting protrusion 42 is trapezoidal, and a limiting protrusion 44 (e.g., ...) is fixed to the upper end of the first limiting protrusion 42. Figure 17 This reduces the probability that the upper cup 1 will fall directly into the lower cup 2.

[0055] Meanwhile, a limiting strip 45 is fixed to the upper side of the first limiting protrusion 42 at the end away from the inclined section 421, and a limiting protrusion 44 is fixed to the end near the inclined section 421. The second limiting protrusion 43 is located between the limiting strip 45 and the limiting protrusion 44. The limiting strip 45 is used to limit the second limiting protrusion 43. The thickness of the limiting strip 45 is the distance between the side away from the inner wall of the lower cup body 12 and the side near the inner wall of the lower cup body 12. When the second limiting protrusion 43 rotates, the limiting strip 45 can contact the side of the second limiting protrusion 43, thereby obstructing it and allowing the upper cup body 11 to rotate only in one direction. The function of the limiting protrusion 44 is to reduce the probability that the upper cup body 1 falls directly into the lower cup body 2. The thickness of the limiting protrusion 44 is the distance between the side away from the inner wall of the lower cup body 12 and the side close to the inner wall of the lower cup body 12. Its thickness is relatively thin. The end of the second limiting protrusion 43 can be slightly deformed when it contacts the limiting protrusion 44, thereby breaking through the limiting protrusion 44 and entering the inclined section 421.

[0056] Furthermore, an annular second limiting part 52 and a third limiting part 53 are fixed on the inner side wall of the lower cup body 2. The second limiting part 52 is located above the fifth limiting rod 41, which can better maintain the original position of the fifth limiting rod 41. The third limiting part 53 is located above the second limiting protrusion 43, which prevents the upper cup body 1 from directly detaching from the lower cup body 2.

[0057] When using the fourth type of self-heating device to heat the container 3, the user holds the upper cup 1 with one hand and rotates the lower cup 2 counterclockwise with the other hand. The second limiting protrusion 43 rotates on the first limiting protrusion 42. After the second limiting protrusion 43 breaks through the limiting protrusion 44 and enters the second inclined section 421, the upper cup 1 begins to slowly move down inside the lower cup 2. Finally, the second limiting protrusion 43 directly enters the gap between the two first limiting protrusions 42. During this process, the upper piercing knife 6 and the lower piercing knife 7 respectively cut the sealing film on the water pack 4 and the self-heating pack 5. The water flowing down from above enters the self-heating pack 5 and reacts with the reactants therein to release heat and heat the container 3 to be heated.

[0058] like Figure 19 As shown, this embodiment provides another implementation of the fourth self-heating device. The upper cup body 1 extends into the lower cup body 2. The sliding structure includes four first limiting protrusions 42 evenly distributed on the inner side wall of the lower cup body 2 and four second limiting protrusions 43 evenly distributed on the outer side wall of the upper cup body 1. There is a gap between the two ends of the first limiting protrusions 42, and the lower end face of the second limiting protrusions 43 contacts the upper end face of the first limiting protrusions 42.

[0059] The difference from the fourth type of self-heating device is that the piercing assembly includes an upper piercing knife 6, a fifth limiting rod 41, and a lower piercing knife 7 arranged sequentially from top to bottom. The upper piercing knife 6 is welded and fixed to the upper side of the fifth limiting rod 41, and the lower piercing knife 7 is welded and fixed to the lower side of the fifth limiting rod 41. A support rod 19 is fixed to the lower side of the fifth limiting rod 41, and the lower end of the support rod 19 contacts the sealing film on the self-heating pack 5. The fifth limiting rod 41 is placed inside the lower cup body 2 and located above the self-heating pack 5. The fifth limiting rod 41 is in the shape of a cross (e.g., ...). Figure 18 ).

[0060] As the upper cup 1 slowly moves down into the lower cup 2, and finally the second limiting protrusion 43 directly enters the gap between the two first limiting protrusions 42, the water pack 4 inside the upper cup 1 will be directly pierced by the upper piercing knife 6. At the same time, the upper cup 1 presses against the fifth limiting rod 41 and the support rod 19 elastically deforms, causing the lower piercing knife 7 to cut the sealing film on the self-heating pack 5 downwards. The water flowing down from above enters the self-heating pack 5 and reacts with the reactants therein to release heat and heat the container 3 to be heated.

[0061] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A self-heating device, characterized in that, It includes an upper cup body (1) and a lower cup body (2). The upper cup body (1) is located at the upper end of the lower cup body (2). The upper end of the upper cup body (1) has an opening for the container to be heated (3) and the water bag (4) to be inserted. The upper cup body (1) has a space for the container to be heated (3) and the water bag (4) to be inserted. The upper end of the lower cup body (2) has an opening for the self-heating pack (5) to be inserted. The lower cup body (2) has a space for the self-heating pack (5) to be inserted. A piercing assembly is provided between the upper cup body (1) and the lower cup body (2). The piercing assembly is located between the water pack (4) and the self-heating pack (5). The piercing assembly includes an upper piercing knife (6) and a lower piercing knife (7). The upper piercing knife (6) facing the water pack (4) is used to pierce the sealing film of the water pack (4), and the lower piercing knife (7) facing the self-heating pack (5) is used to pierce the sealing film of the self-heating pack (5). The upper cup body (1) and the lower cup body (2) are rotatably connected, and a sliding structure is also included. The sliding structure enables the upper piercing knife (6) and the lower piercing knife (7) to move closer or further apart when the upper cup body (1) or the lower cup body (2) rotates.

2. The self-heating device according to claim 1, characterized in that, The puncture assembly includes an upper puncture body and a lower puncture body, with the upper puncture body located inside the upper cup body (1) and the lower puncture body located inside the lower cup body (2); The upper piercing body is provided with an upper piercing knife (6), a first limiting rod (11) and a limiting cylinder (12) from top to bottom, and the lower piercing body is provided with a second limiting rod (13) and a lower piercing knife (7) from top to bottom. The sliding structure includes a spiral first limiting rib (121) fixed to the outside of the limiting cylinder (12), a limiting plate (122) fixed inside the upper cup body (1), a fixing rod (123) fixed to the limiting cylinder (12), a first limiting block (14) fixed to the upper end of the second limiting rod (13), and a spiral second limiting rib (15) fixed to the inside of the lower cup body (2). The end of the second limiting rod (13) contacts the side of the second limiting rib (15), the end of the limiting plate (122) contacts the side of the first limiting rib (121), the first limiting block (14) contacts the fixing rod (123), and the side of the first limiting block (14) that contacts the fixing rod (123) is an inclined surface (141).

3. The self-heating device according to claim 2, characterized in that, The upper cup body (1) is fixed with a limiting post (16) on the inner side. The upper piercing body is located on the inner side of the limiting post (16). The limiting plate (122) is fixed on the side of the limiting post (16) near the upper piercing body. The end of the limiting plate (122) extends inward and contacts the side of the first limiting rib (121).

4. A self-heating device according to claim 2, characterized in that, The upper end of the first limiting block (14) is fixed with a blocking part (142).

5. A self-heating device according to claim 3, characterized in that, The limiting post (16) has a first limiting part (161) fixed on the side near the upper puncture body. The first limiting part (161) is located on the upper side of the first limiting rod (11).

6. A self-heating device according to claim 2, characterized in that, The lower end of the second limiting rod (13) is fixed with a support rod (19), and the lower end of the support rod (19) contacts the sealing film on the self-heating pack (5).

7. A self-heating device according to claim 1, characterized in that, The puncture assembly includes an upper puncture body and a lower puncture body, with the upper puncture body located inside the upper cup body (1) and the lower puncture body located inside the lower cup body (2); The upper piercing body is provided with an upper piercing knife (6) and a third limiting rod (21) from top to bottom, and the lower piercing body is provided with a fourth limiting rod (22) and a lower piercing knife (7) from top to bottom. The sliding structure includes a second limiting block (23) fixed at the lower end of the third limiting rod (21), a third limiting block (24) fixed at the upper end of the fourth limiting rod (22), a first limiting member fixed in the upper cup body (1), and a second limiting member fixed in the lower cup body (2); The first limiting member is located on the lower side of the water bag (4) and is used to limit the third limiting rod (21). The third limiting member is located on the upper side of the self-heating bag (5) and is used to limit the fourth limiting rod (22). The side of the second limiting block (23) that contacts the third limiting block (24) is the first inclined section.

8. A self-heating device according to claim 7, characterized in that, The first limiting member includes two vertically arranged first limiting strips (25) fixed inside the upper cup body (1), and there is a gap between the two first limiting strips (25) for the end of the third limiting rod (21) to extend into. The second limiting member includes two vertically arranged second limiting strips (26) fixed inside the lower cup body (2), and there is a gap between the two second limiting strips (26) for the end of the fourth limiting rod (22) to extend into.

9. A self-heating device according to claim 7, characterized in that, The first limiting member includes a third limiting rib (31) fixed inside the upper cup body (1). The third limiting rib (31) is spiral-shaped, and the end of the third limiting rod (21) contacts the side of the third limiting rib (31). The second limiting member includes a fourth limiting rib (32) fixed inside the lower cup body (2). The fourth limiting rib (32) is spiral-shaped, and the end of the fourth limiting rod (22) contacts the side of the fourth limiting rib (32).

10. A self-heating device according to claim 7, characterized in that, The first inclined section of the third limiting block (24) is provided with a horizontal part (241).

11. A self-heating device according to claim 7, characterized in that, The upper end of the third limiting rod (21) is fixed with a support rod (19), the upper end of the support rod (19) is higher than the upper piercing knife (6), the lower end of the fourth limiting rod (22) is fixed with a support rod (19), and the lower end of the support rod (19) contacts the sealing film on the self-heating pack (5).

12. A self-heating device according to claim 1, characterized in that, The upper cup body (1) extends into the lower cup body (2). The piercing assembly includes an upper piercing body and a lower piercing body. The upper piercing body includes a fifth limiting rod (41) placed inside the lower cup body (2) and an upper piercing knife (6) fixed to the upper end of the fifth limiting rod (41). The lower piercing body includes a lower piercing knife (7) fixed to the lower end of the upper cup body (1). The sliding structure includes a first limiting protrusion (42) fixed on the inner side wall of the lower cup body (2) and a second limiting protrusion (43) fixed on the outer side wall of the upper cup body (1). There is a gap between the two ends of the first limiting protrusion (42), and the lower end face of the second limiting protrusion (43) contacts the upper end face of the first limiting protrusion (42).

13. A self-heating device according to claim 1, characterized in that, The upper cup body (1) extends into the lower cup body (2). The piercing assembly includes an upper piercing knife (6), a fifth limiting rod (41), and a lower piercing knife (7) arranged sequentially from top to bottom. The upper piercing knife (6) is fixed on the upper side of the fifth limiting rod (41), and the lower piercing knife (7) is fixed on the lower side of the fifth limiting rod (41). A support rod (19) is fixed on the lower side of the fifth limiting rod (41), and the lower end of the support rod (19) contacts the sealing film on the self-heating pack (5). The sliding structure includes a first limiting protrusion (42) fixed on the inner side wall of the lower cup body (2) and a second limiting protrusion (43) fixed on the outer side wall of the upper cup body (1). There is a gap between the two ends of the first limiting protrusion (42), and the lower end face of the second limiting protrusion (43) contacts the upper end face of the first limiting protrusion (42).

14. A self-heating device according to claim 12 or 13, characterized in that, The end of the first limiting protrusion (42) is provided with a second inclined section (421).

15. A self-heating device according to claim 12 or 13, characterized in that, The upper end of the first limiting protrusion (42) is fixed with a limiting protrusion strip (44).

16. A self-heating device according to claim 12 or 13, characterized in that, A limit stop bar (45) is fixed at the upper end of the first limiting protrusion (42).

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