Puncturing body, puncturing assembly and self-heating device

Abstract

The utility model provides a puncturing body, a puncturing assembly and a self-heating device, and belongs to the technical field of heating devices which generate heat through exothermic reaction. One end of the puncturing body is a pressing end, the other end of the puncturing body is a cylindrical puncturing end, the cylindrical puncturing end is provided with a plurality of puncturing teeth, the puncturing teeth are continuously arranged along the cylindrical puncturing end, each puncturing tooth is provided with a tooth top and a tooth root, the tooth width of each puncturing tooth is gradually increased from the tooth top to the tooth root, and the tooth roots of any two adjacent puncturing teeth are connected. And an inner cavity of the cylindrical puncturing end forms an accommodating cavity capable of accommodating the local material of the cut water bag. When the piercing body is pressed, the tooth tips of the piercing teeth firstly make contact with and pierce the water bag, the tooth roots of the piercing teeth gradually make contact with the water bag along with movement of the piercing body, the pierced opening in the water bag is gradually enlarged in the process, finally, local materials of the water bag can be completely cut off, and an opening consistent with the cylindrical piercing end in size is formed. And liquid in the water bag can smoothly flow outwards through the opening and flows onto the self-heating bag, so that the exothermic reaction effect is fully ensured.

Description

Technical Field

[0001] The utility model relates to a puncturing body, a puncturing assembly and a self-heating device, and belongs to the technical field of heating devices that generate heat by exothermic reactions. Background Art

[0002] In daily life, when people need to consume hot canned foods (such as beverages, eight-treasure porridge, etc.), they usually use a heating container to heat the canned foods. However, heating containers generally require electricity or an open flame. In places where electricity and open flames are not convenient, a self-heating device is needed.

[0003] For example, a self-heating device disclosed in a Chinese utility model patent with the authorization announcement number CN214525737U includes a storage cavity (i.e., a cup body). A sealed water bag (i.e., a water packet), a self-heating packet and a puncturing assembly are arranged in the cup body. The self-heating packet is located below the water packet and the puncturing assembly, and the main reactant is quicklime. A sliding cavity (i.e., an installation cylinder) extending horizontally is arranged in the cup body. The puncturing assembly includes a puncturing assembly body (i.e., a puncturing body) guidingly installed in the installation cylinder. A puncturing needle is arranged at the front end of the puncturing body, and a spring is sleeved outside the puncturing needle. During use, by pressing the puncturing body, the puncturing body can slide in the installation cylinder (one end of the puncturing body constitutes a pressing end for manual pressing), until the puncturing needle extends out of the sliding cavity and punctures the water packet. After the water flows out, it flows onto the self-heating packet below to achieve an exothermic reaction, and the generated hot air can heat the canned food placed in the cup body. Since the spring is compressed during the sliding process of the puncturing body, after releasing the puncturing body, the puncturing needle will retract into the sliding cavity under the action of elastic force.

[0004] Only a conical puncturing needle is arranged at the end of the above-mentioned puncturing body. When the puncturing needle punctures the water packet, the local material of the water packet is punctured by the puncturing needle and deformed into the water packet along with the penetration of the puncturing needle (that is, this part of the material does not break away from the water packet, but is pushed by the puncturing needle and deformed into the water packet). When the puncturing needle withdraws, the liquid in the water packet flows out from the punctured opening. However, due to the recoverable property of the material itself and the pushing action of the outward flowing liquid, the material deformed into the water packet is easily restored and blocks the opening, resulting in poor water flow and affecting the exothermic reaction effect of the self-heating packet. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a puncturing body to solve the problem that the existing puncturing body relies on a conical puncturing needle to puncture the water packet, causing the local material of the water packet to be punctured by the puncturing needle and deformed into the water packet along with the penetration of the puncturing needle. When the puncturing needle withdraws, the material deformed into the water packet will be restored and block the punctured opening, thereby resulting in poor water flow and affecting the exothermic reaction effect of the self-heating packet. The purpose of the utility model is also to provide a puncturing assembly and a self-heating device to solve the above problems.

[0006] To achieve the above object, the puncturing body in the present utility model adopts the following technical solution:

[0007] A puncturing body, one end of the puncturing body is a pressing end for manual pressing, and the other end is a cylindrical puncturing end. The cylindrical puncturing end is provided with a plurality of puncturing teeth extending away from the pressing end and used for puncturing the water bag. Each puncturing tooth is continuously arranged along the cylindrical puncturing end. Each puncturing tooth has a tooth tip and a tooth root. The tooth width of each puncturing tooth gradually increases from the tooth tip to the tooth root. The tooth roots of any two adjacent puncturing teeth are connected to completely cut off the local material of the water bag. The inner cavity of the cylindrical puncturing end forms a receiving cavity capable of receiving the cut-off local material of the water bag.

[0008] The beneficial effects of the above technical solution are as follows: The present utility model belongs to an invention creation with a change in the element relationship in the element change, mainly changing the shape of the puncturing end of the puncturing body from the conical puncturing needle in the prior art to a cylindrical puncturing end. And the cylindrical puncturing end is provided with a plurality of puncturing teeth extending away from the pressing end and used for puncturing the water bag. Each puncturing tooth is continuously arranged along the cylindrical puncturing end. Each puncturing tooth has a tooth tip and a tooth root. The tooth roots of any two adjacent puncturing teeth are connected. In this way, when a force is applied to the pressing end of the puncturing body, the entire puncturing body moves, and the tooth tips of the puncturing teeth first contact and pierce the water bag. Since there is a distance between the tooth tips of each puncturing tooth, the water bag is punctured at multiple points at this time; as the puncturing body continues to move, the tooth roots of the puncturing teeth gradually contact the water bag. Since the tooth width of each puncturing tooth gradually increases from the tooth tip to the tooth root, the punctured opening on the water bag gradually becomes larger during this process; since the tooth roots of the puncturing teeth are connected, finally the local material of the water bag will be completely cut off, forming an opening with the same size as the cylindrical puncturing end, and the cut-off local material of the water bag can enter the inner cavity of the cylindrical puncturing end. When the puncturing body retracts, the liquid in the water bag can flow out smoothly through the opening, and there will be no situation of blocking the opening, fully ensuring the heat release reaction effect of the self-heating pack, and solving the problem in the prior art that when the conical puncturing needle withdraws, the material deformed into the water bag will recover and block the punctured opening, thereby causing poor water flow and affecting the heat release reaction effect of the self-heating pack.

[0009] Further, at least two continuously arranged puncturing teeth form a tooth group, and all the puncturing teeth are divided into at least two tooth groups. The lengths of the respective puncturing teeth in each tooth group are not the same.

[0010] Further, the lengths of any two adjacent puncturing teeth are not the same.

[0011] Further, the puncturing body includes a puncturing cylinder with a cylinder cover at one end and an opening at the other end. The cylinder cover of the puncturing cylinder constitutes the pressing end, and the opening end of the puncturing cylinder constitutes the cylindrical puncturing end.

[0012] Further, a retaining edge is provided at the edge of the cylinder cover for retaining and cooperating with the inner flange of the mouth of the mounting cylinder in the puncturing assembly. A plurality of deformation grooves are evenly distributed on the retaining edge for elastic deformation of the retaining edge to cross the inner flange of the mouth of the cylinder when the puncturing body is inserted into the mounting cylinder.

[0013] To achieve the above object, the following technical solution is adopted for the puncturing assembly in the present utility model:

[0014] A puncturing assembly includes a mounting cylinder, a puncturing body slidably and guidingly assembled in the mounting cylinder, and a spring disposed between the puncturing body and the mounting cylinder. One end of the puncturing body is a pressing end for being pressed by hand, and the other end is a cylindrical puncturing end. A plurality of puncturing teeth extending away from the pressing end and for puncturing the water bag are provided on the cylindrical puncturing end. Each puncturing tooth is continuously arranged along the cylindrical puncturing end. Each puncturing tooth has a tooth tip and a tooth root. The tooth width of each puncturing tooth gradually increases from the tooth tip to the tooth root. The tooth roots of any two adjacent puncturing teeth are connected to completely cut off the local material of the water bag. The inner cavity of the cylindrical puncturing end forms a receiving cavity capable of receiving the cut-off local material of the water bag.

[0015] The beneficial effects of the above technical solution are as follows: The present utility model belongs to an improved invention. Compared with the prior art, the shape of the puncturing body is further defined. The puncturing end of the puncturing body is cylindrical, and a plurality of puncturing teeth extending away from the pressing end and for puncturing the water bag are provided on the cylindrical puncturing end. Each puncturing tooth is continuously arranged along the cylindrical puncturing end. Each puncturing tooth has a tooth tip and a tooth root. The tooth roots of any two adjacent puncturing teeth are connected. In this way, when a force is applied to the pressing end of the puncturing body, the entire puncturing body moves, and the tooth tips of the puncturing teeth first contact and pierce the water bag. Since there is a distance between the tooth tips of each puncturing tooth, the water bag is punctured at multiple points at this time. As the puncturing body continues to move, the tooth roots of the puncturing teeth gradually contact the water bag. Since the tooth width of each puncturing tooth gradually increases from the tooth tip to the tooth root, the torn opening on the water bag gradually becomes larger during this process. Since the tooth roots of the puncturing teeth are connected, the local material of the water bag will finally be completely cut off, forming an opening with the same size as the cylindrical puncturing end, and the cut-off local material of the water bag can enter the inner cavity of the cylindrical puncturing end. When the puncturing body retracts, the liquid in the water bag can flow out smoothly through the opening, and there will be no situation of blocking the opening, fully ensuring the heat release reaction effect of the self-heating package, and solving the problem in the prior art that when the conical puncturing needle withdraws, the material deformed into the water bag will recover and block the torn opening, thereby causing poor water flow and affecting the heat release reaction effect of the self-heating package.

[0016] Further, at least two continuously arranged puncturing teeth form a tooth group, and all the puncturing teeth are divided into at least two tooth groups. The lengths of the puncturing teeth in each tooth group are all different.

[0017] Further, the lengths of any two adjacent puncturing teeth are all different.

[0018] Further, the puncturing body includes a puncturing cylinder with a cylinder cover at one end and an opening at the other end. The cylinder cover of the puncturing cylinder constitutes the pressing end, and the opening end of the puncturing cylinder constitutes the cylindrical puncturing end.

[0019] Further, the installation cylinder includes a cylinder body. An inwardly extending cylinder mouth inner flange is provided at one end of the cylinder body, and a baffle is provided at the other end of the cylinder body. A through hole is provided on the baffle for the cylindrical puncturing end of the puncturing body and each puncturing tooth to pass through; an outwardly extending retaining edge for engaging and cooperating with the cylinder mouth inner flange is provided at the pressing end of the puncturing body, and a plurality of deformation grooves for elastically deforming the retaining edge to cross the cylinder mouth inner flange when the puncturing body is inserted into the installation cylinder are evenly distributed on the retaining edge.

[0020] Further, the installation cylinder includes a cylinder body. An outwardly extending cylinder mouth outer flange for engaging and cooperating with the outer wall surface of the cup body of the self-heating device is provided at one end of the cylinder body, and an annular protrusion for engaging and cooperating with the inner wall surface of the cup body is provided on the outer peripheral surface of the cylinder body. An annular groove is formed between the annular protrusion and the cylinder mouth outer flange, and the size and shape of the annular groove are adapted to the size and shape of the installation opening on the cup body.

[0021] Further, the installation cylinder includes a cylinder body. Two abutting legs for abutting against the sealing film of the water bag are provided at the end of the cylinder body facing the inside of the cup body of the self-heating device, and the two abutting legs are horizontally spaced apart during use.

[0022] To achieve the above object, the following technical solution is adopted for the self-heating device in the present utility model:

[0023] A self-heating device includes a cup body, a water bag arranged inside the cup body, and a puncturing assembly installed on the cup body. The puncturing assembly includes an installation cylinder, a puncturing body slidably and guidingly assembled inside the installation cylinder, and a spring provided between the puncturing body and the installation cylinder. One end of the puncturing body is a pressing end for being pressed by hand, and the other end is a cylindrical puncturing end. A plurality of puncturing teeth extending away from the pressing end and for puncturing the water bag are provided on the cylindrical puncturing end. Each puncturing tooth is continuously arranged along the cylindrical puncturing end. Each puncturing tooth has a tooth tip and a tooth root, and the tooth width of each puncturing tooth gradually increases from the tooth tip to the tooth root. The tooth roots of any two adjacent puncturing teeth are connected to completely cut off the local material of the water bag, and the inner cavity of the cylindrical puncturing end constitutes a receiving cavity capable of receiving the cut-off local material of the water bag.

[0024] The beneficial effects of the above technical solution are as follows: The present utility model belongs to an improved invention. Compared with the prior art, the form of the puncturing assembly is further defined. Specifically, the puncturing end of the puncturing body in the puncturing assembly is in a cylindrical shape, and a plurality of puncturing teeth for puncturing the water bag and extending away from the pressing end are provided on the cylindrical puncturing end. The puncturing teeth are continuously arranged along the cylindrical puncturing end. Each puncturing tooth has a tooth tip and a tooth root. The tooth roots of any two adjacent puncturing teeth are connected. In this way, when the pressing end of the puncturing body is stressed, the entire puncturing body moves, and the tooth tips of the puncturing teeth first contact and pierce the water bag. Since there is a distance between the tooth tips of the puncturing teeth, the water bag is pierced at multiple points at this time. As the puncturing body continues to move, the tooth roots of the puncturing teeth gradually contact the water bag. Since the tooth width of each puncturing tooth gradually increases from the tooth tip to the tooth root, the hole pierced on the water bag gradually becomes larger during this process. Since the tooth roots of the puncturing teeth are connected, finally, the local material of the water bag will be completely cut off, forming an opening with the same size as the cylindrical puncturing end, and the cut local material of the water bag can enter the inner cavity of the cylindrical puncturing end. When the puncturing body retracts, the liquid in the water bag can flow out smoothly through the opening, and there will be no situation of blocking the opening, which fully ensures the heat release reaction effect of the self-heating package, and solves the problem in the prior art that when the conical puncturing needle withdraws, the material deformed into the water bag will recover and block the pierced hole, thus causing poor water flow and affecting the heat release reaction effect of the self-heating package.

[0025] Further, at least two continuously arranged puncturing teeth form a tooth group, and all the puncturing teeth are divided into at least two tooth groups. The lengths of the puncturing teeth in each tooth group are different from each other.

[0026] Further, the lengths of any two adjacent puncturing teeth are different from each other.

[0027] Further, the puncturing body includes a puncturing cylinder with a cylinder cover at one end and an opening at the other end. The cylinder cover of the puncturing cylinder constitutes the pressing end, and the opening end of the puncturing cylinder constitutes the cylindrical puncturing end.

[0028] Further, the installation cylinder includes a cylinder body. An inner flange of the cylinder mouth extending inward is provided at one end of the cylinder body, and a baffle is provided at the other end of the cylinder body. A through hole for the cylindrical puncturing end of the puncturing body and each puncturing tooth to pass through is provided on the baffle. A retaining edge extending outward and used for engaging and cooperating with the inner flange of the cylinder mouth is provided at the pressing end of the puncturing body. A plurality of deformation grooves for elastic deformation of the retaining edge to pass over the inner flange of the cylinder mouth when the puncturing body is inserted into the installation cylinder are evenly distributed on the retaining edge.

[0029] Further, the installation cylinder includes a cylinder body. One end of the cylinder body is provided with a flange protruding outward for abutting and cooperating with the outer wall surface of the cup body of the self-heating device. An annular protrusion for abutting and cooperating with the inner wall surface of the cup body is provided on the outer peripheral surface of the cylinder body. An annular groove is formed between the annular protrusion and the flange protruding from the cylinder mouth. The size and shape of the annular groove are adapted to the size and shape of the installation opening on the cup body.

[0030] Further, the installation cylinder includes a cylinder body. At one end of the cylinder body facing the inside of the cup body of the self-heating device, there are two abutting legs for abutting against the sealing film of the water bag, and the two abutting legs are horizontally spaced apart during use. Description of the Drawings

[0031] Figure 1 is the front view of the embodiment of the self-heating device of the present utility model;

[0032] Figure 2 is the side perspective view of the embodiment of the self-heating device of the present utility model;

[0033] Figure 3 is the top view of the lower cup body, the puncturing assembly and the water bag in the embodiment of the self-heating device of the present utility model;

[0034] Figure 4 is the three-dimensional view of the lower cup body in the embodiment of the self-heating device of the present utility model;

[0035] Figure 5 is the three-dimensional view of the puncturing body of the puncturing assembly in the embodiment of the self-heating device of the present utility model;

[0036] Figure 6 is the cross-sectional view of the puncturing body of the puncturing assembly in the embodiment of the self-heating device of the present utility model;

[0037] Figure 7 is the three-dimensional view (one perspective) of the installation cylinder in the embodiment of the self-heating device of the present utility model;

[0038] Figure 8 is the three-dimensional view (another perspective) of the installation cylinder in the embodiment of the self-heating device of the present utility model;

[0039] Figure 9 is the cross-sectional view of the installation cylinder of the puncturing assembly in the embodiment of the self-heating device of the present utility model;

[0040] Figure 10 is the cross-sectional view of the upper cup body in the embodiment of the self-heating device of the present utility model.

[0041] In the figure: 1. Upper cup body; 11. First cylindrical section; 111. Second external thread; 112. Flange; 12. Second cylindrical section; 121. First internal thread; 13. Frustum section; 131. Vent hole; 132. Limit projection; 2. Lower cup body; 21. First guiding rib; 211. Inclined extension section; 212. Vertical extension section; 22. Second guiding rib; 221. Upper part; 222. Lower part; 23. Support rib; 24. Limit projection; 25. Support and limit rib; 251. Bottom support surface; 252. Side limit surface; 26. Installation opening; 27. First external thread; 3. Piercing assembly; 31. Installation cylinder; 311. Cylinder body; 312. Cylinder cover; 313. Inner flange of cylinder opening; 314. Baffle; 315. Outer flange of cylinder opening; 316. Annular protrusion; 317. Supporting leg; 318. Through hole; 32. Piercing body; 321. Piercing cylinder; 322. Cylinder cover; 323. Stop edge; 324. Deformation groove; 325. Piercing teeth; 3251. Long piercing teeth; 3252. Medium piercing teeth; 3253. Short piercing teeth; 33. Spring; 4. Cover body; 5. Water bag; 51. Box body; 52. Hard sealing edge; 6. Self-heating pack; 7. Can to be heated. Detailed implementation mode

[0042] Aiming at the technical problems existing in the prior art, the basic concept of the present utility model is to change the shape of the piercing end of the piercing body, adopt a cylindrical piercing end and continuous piercing teeth, so that the tips of the piercing teeth first contact and pierce the water bag, and then the roots of the piercing teeth gradually contact the water bag. During the process, the holes pierced in the water bag gradually become larger until finally a part of the material of the water bag is completely cut off, facilitating the smooth outward flow of the liquid in the water bag.

[0043] Embodiment 1 of the self-heating device in the present utility model:

[0044] As Figure 1 、 Figure 2 and Figure 3 shown, the self-heating device includes an upper cup body 1, a lower cup body 2, a piercing assembly 3, a cover body 4, a water bag 5, and a self-heating pack 6. Among them, the upper cup body 1 and the lower cup body 2 jointly form the cup body of the self-heating device. The piercing assembly 3 is installed on the lower cup body 2. Both the water bag 5 and the self-heating pack 6 are located inside the lower cup body 2, and the self-heating pack 6 is located below the water bag 5 and the piercing assembly 3. The water bag 5 includes a box body 51 and a liquid sealed and stored in the box body 51. The form of the box body 51 is basically similar to that of a yogurt box of an eight-connected cup in the prior art. The box body 51 itself has a certain strength and can maintain a definite shape. A hard sealing edge 52 extending outward is provided at the opening of the box body 51, and the hard sealing edge 52 is used for heat-sealing and fixing the sealing film.

[0045] As Figure 3As shown, the puncturing assembly 3 includes an installation cylinder 31, a puncturing body 32 slidably mounted in the installation cylinder 31 in a guiding manner, and a spring 33 disposed between the puncturing body 32 and the installation cylinder 31. Combining Figure 7 , Figure 8 and Figure 9 shown, the installation cylinder 31 includes a cylinder body 311. At the position of the cylinder opening at one end of the cylinder body 311, there is a cylinder opening inner flange 313 extending inwards and a cylinder opening outer flange 315 extending outwards. The cylinder opening inner flange 313 is in blocking cooperation with the puncturing body 32 to prevent the puncturing body 32 from slipping out of the cylinder body 311 outwards; the cylinder opening outer flange 315 is in blocking cooperation with the outer wall surface of the lower cup body 2. An annular protrusion 316 in blocking cooperation with the inner wall surface of the lower cup body 2 is provided on the outer peripheral surface of the cylinder body 311. An annular groove is formed between the annular protrusion 316 and the cylinder opening outer flange 315. The size and shape of the annular groove are adapted to the size and shape of the installation opening 26 on the lower cup body 2 ( Figure 4 shown). When assembling the installation cylinder 31 on the lower cup body 2, the cylinder body 311 is passed through the installation opening 26 until the annular protrusion 316 abuts against the outer wall surface of the lower cup body 2. Since both the lower cup body 2 and the installation cylinder 31 are injection molded, and the height of the annular protrusion 316 protruding from the outer peripheral surface of the cylinder body 311 is not very large, and a tapered guiding surface is provided on the side of the annular protrusion 316 facing away from the cylinder opening outer flange 315, so by pressing the installation cylinder 31 inwards forcefully, the annular protrusion 316 can cross over the installation opening 26, and then it can cooperate with the cylinder opening outer flange 315 to be clamped and fixed on the lower cup body 2 together.

[0046] A cylinder cover 312 is connected to the cylinder opening outer flange 315, which can be opened and closed. When closed, it can seal the cylinder opening at one end of the cylinder body 311 to prevent personnel from accidentally touching the puncturing body 32 inside and causing the water bag 5 to be punctured accidentally. Clamping protrusions are respectively provided on the cylinder cover 312 and the cylinder opening outer flange 315. When the cylinder cover 312 is closed, the two clamping protrusions are blocked to prevent the cylinder cover 312 from disengaging freely.

[0047] In addition, a baffle 314 is provided at the position of the cylinder opening at the other end of the cylinder body 311, and a through hole 318 is provided on the baffle 314. At the same time, this end of the cylinder body 311 is located inside the lower cup body 2, and a pressing leg 317 for abutting against the sealing film of the water bag 5 is also provided at this end. There are two pressing legs 317 and they are arranged horizontally at intervals during use. By contacting the end surface of the pressing leg 317 with the sealing film of the water bag 5, when the liquid in the water bag 5 flows continuously during transportation and drives the sealing film to bulge, the end surface of the pressing leg 317 can limit the sealing film to prevent the sealing film from bulging excessively and accidentally contacting the puncturing body 32 and being punctured.

[0048] One end of the puncturing body 32 is a pressing end for manual pressing, and the other end is a cylindrical puncturing end. As Figure 5 , Figure 6As shown in the figure, the puncturing body 32 includes a puncturing cylinder 321 with a cylinder cover 322 at one end and an opening at the other end. The main body of the puncturing body 32 is a cylindrical structure, and the puncturing cylinder 321 is a cylindrical cylinder. The entire cylinder cover 322 forms a pressing end. The size of the cylinder cover 322 is larger than that of the puncturing cylinder 321. It not only seals one end of the puncturing cylinder 321, but also has an extra edge part. The overall shape of the cylinder cover 322 is oval and is adapted to the shape of a human finger.

[0049] The open end of the puncturing cylinder 321 forms a cylindrical puncturing end. The cylindrical puncturing end is provided with a plurality of puncturing teeth 325 that extend away from the pressing end and are used to puncture the sealing film of the water bag 5. Each puncturing tooth 325 is continuously arranged along the cylindrical puncturing end. Each puncturing tooth 325 has a tooth tip and a tooth root, and the tooth width of each puncturing tooth 325 gradually increases from the tooth tip to the tooth root. The puncturing tooth 325 is generally triangular in shape. For the convenience of puncturing the sealing film, there are thin blades on both sides from the tooth tip to the tooth root.

[0050] The tooth roots of any two adjacent puncturing teeth 325 are connected. In this way, when a force is applied to the pressing end of the puncturing body 32, the entire puncturing body 32 moves towards the water bag 5. The tooth tips of the puncturing teeth 325 first contact and puncture the sealing film of the water bag 5. Since there is a distance between the tooth tips of each puncturing tooth 325, the sealing film is punctured at multiple points at this time. As the puncturing body 32 continues to move, the tooth roots of the puncturing teeth 325 gradually contact the sealing film. During this process, the holes punctured in the sealing film gradually become larger, and finally the local material of the sealing film will be completely cut off, forming an opening that is the same size as the cylindrical puncturing end. The local material of the sealing film after being cut can enter the inner cavity of the cylindrical puncturing end (so its inner cavity forms a receiving cavity). When the puncturing body 32 retreats, the liquid in the water bag 5 can flow out smoothly through the opening, and there will be no situation of blocking the opening.

[0051] Furthermore, at least two continuously arranged puncturing teeth 325 form a tooth group. All the puncturing teeth 325 are divided into at least two tooth groups, and the lengths of the respective puncturing teeth 325 in each tooth group are different. Specifically, in this embodiment, all the puncturing teeth 325 are divided into five groups. Some tooth groups contain three puncturing teeth 325, as Figure 6 shown, which are the long puncturing tooth 3251, the medium puncturing tooth 3252, and the short puncturing tooth 3253 respectively. Some tooth groups contain two puncturing teeth 325. Since the lengths of the puncturing teeth 325 are different, during the process of puncturing the water bag 5, the puncturing tooth 325 with the longest length will first contact the sealing film. Compared with all puncturing teeth of equal length, the contact points are fewer at this time, and it is easier to puncture the sealing film under the same acting force. As the puncturing body 32 moves, the short puncturing teeth contact the sealing film in sequence. At the same time, the lengths of any two adjacent puncturing teeth 325 are different, which can avoid the over-concentration of puncturing teeth 325 with the same length. If they are dispersed, it is easier to puncture the sealing film.

[0052] As Figure 5 and Figure 6 shown, a stop edge 323 is provided at the edge of the cylinder cover 322 for engaging and stopping with the inner flange 313 of the cylinder mouth of the installation cylinder 31. When installing the puncturing body 32, first, the spring 33 is sleeved outside the puncturing cylinder 321, and then the cylindrical puncturing end of the puncturing body 32 is inserted into the cylinder body 311 of the installation cylinder 31 inward until the stop edge 323 abuts against the inner flange 313 of the cylinder mouth. Press the puncturing body 32 forcefully to deform the stop edge 323 and make it cross over the inner flange 313 of the cylinder mouth. Since one end of the spring 33 is pressed against the cylinder cover 322 and the other end is pressed against the baffle 314 of the installation cylinder 31, under the reaction force of the spring 33, the stop edge 323 engages and stops with the inner flange 313 of the cylinder mouth, making the puncturing body 32 unable to escape from the installation cylinder 31. To facilitate the deformation of the stop edge 323 during installation, a plurality of deformation grooves 324 are evenly arranged on the stop edge 323 to facilitate its elastic deformation to cross over the inner flange 313 of the cylinder mouth.

[0053] During the process of installing the puncturing body 32, each puncturing tooth 325 passes through the through-hole 318 on the baffle 314. After being installed in place, without pressing the puncturing body 32, each puncturing tooth 325 does not protrude from the end faces of the two abutting legs 317, ensuring that only by pressing the puncturing body 32 can the water bag 5 be punctured. The through-hole 318 is a round hole, and its size is adapted to the outer diameter of the puncturing cylinder 321, which can guide the puncturing body 32 during its movement. At the same time, as Figure 7 and Figure 8 shown, the inner cavity of the cylinder body 311 is an elliptical cavity, and its inner cavity size is adapted to the outer contour size of the stop edge 323, which can also guide the puncturing body 32 during its movement.

[0054] In addition, to prevent the hot air flow from flowing into the installation cylinder 31 through the gap between the puncturing cylinder 321 and the through-hole 318 during the exothermic reaction of the self-heating package 6, and then flowing out through the gap between the stop edge 323 and the inner flange 313 of the cylinder mouth, or directly flowing out through the gap between the installation cylinder 31 and the installation opening 26 of the lower cup body 2, thereby causing harm to personnel, a sealing ring can be installed on the inner wall of the through-hole 318 to be hermetically matched with the outer peripheral surface of the puncturing cylinder 321. At the same time, a sealing ring is provided between the outer flange 315 of the cylinder mouth and the outer wall surface of the lower cup body 2 or between the annular protrusion 316 and the inner wall surface of the lower cup body 2 to ensure the sealing between the installation cylinder 31 and the installation opening 26 and prevent hot air from leaking.

[0055] To facilitate the installation of the water bag 5, two guiding structures extending up and down are provided in the lower cup body 2, as Figure 3 and Figure 4As shown, each guide structure includes two guide ridges convexly arranged on the inner wall of the lower cup body 2, namely, a first guide ridge 21 and a second guide ridge 22. The two guide ridges and the inner wall of the lower cup body 2 together form a guide groove. The notches of the two guide grooves are opposite to each other. When the water bag 5 is loaded, the two sides of the hard sealing edge 52 extend into the guide groove respectively, which can guide the loading of the water bag 5. After being installed in place, the groove wall of the guide groove cooperates with the hard sealing edge 52 to stop and fix the water bag 5 in the lower cup body 2 to prevent the water bag 5 from moving horizontally. In each guide structure, the two guide ridges, the guide ridge close to the mounting opening 26, i.e., the first guide ridge 21, includes an upper inclined extension section 211 and a lower vertical extension section 212, and the upper portion 221 and the lower portion 222 of the second guide ridge 22 both extend vertically, so that the guide groove includes an upper gradually varying groove width section and a lower equidistant groove width section, and the gradually varying groove width section can guide the hard sealing edge 52.

[0056] The lower ends of the two guide ridges in each guide structure are connected by a support ridge 23, and the lower end of the support ridge 23 extends to the bottom wall of the lower cup body 2. The top surface of the support ridge 23 is located between the two guide ridges and constitutes a support surface for supporting the hard sealing edge 52 of the water bag 5. The support surfaces on both sides are of the same height, which limits the extreme position of the downward installation of the water bag 5. There is a set distance between the support surface and the bottom wall of the lower cup body 2, and the set distance is not less than the height of the self-heating bag 6 to meet the arrangement of the self-heating bag 6.

[0057] The installation opening 26 corresponds to the interval between the two guide structures, so that after the water bag 5 is installed in place, the sealing membrane of the water bag 5 is directly opposite to the piercing assembly 3, so that the piercing assembly 3 can pierce the sealing membrane of the water bag 5. Since the lower cup body 2 is a cylindrical structure as a whole, in order to better limit the water bag 5 during and after the installation of the water bag 5, a limiting convex strip 24 for contacting and limiting the outer wall of the bottom of the box body 51 is provided on the inner wall of the lower cup body 2 at a position opposite to the installation opening 26, and two limiting convex strips 24 are arranged in parallel and spaced apart.

[0058] like Figure 2 As shown, the tank body 7 to be heated is located above the water bag 5, and the tank body 7 to be heated can be a can containing beverages or food such as eight-treasure porridge. In order to support the tank body 7 to be heated, as shown in FIG. Figure 3 and Figure 4As shown, four support and limit ribs 25 evenly distributed around the circumference are convexly provided on the inner wall of the lower cup body 2, the installation opening 26 is located between two adjacent support and limit ribs 25, and the limit ribs 24 are located between another two adjacent support and limit ribs 25. The lower end of each support and limit rib 25 extends to the bottom wall of the lower cup body 2. When the self-heating package 6 is installed, it can be directly installed to contact the bottom wall of the lower cup body 2, and the lower parts of each support and limit rib 25, each support rib 23 and each limit rib 24 are used to clamp it, so as to prevent the self-heating package 6 from moving.

[0059] The upper end of each supporting and limiting rib 25 includes a bottom supporting surface 251 for supporting the bottom of the heated tank body 7 and a side limiting surface 252 for limiting the side of the heated tank body 7, so that the supporting function can be achieved and the horizontal movement of the heated tank body 7 can be avoided. It should be noted that the above-mentioned guide ribs, supporting ribs 23, supporting and limiting ribs 25, and limiting ribs 24 can be integrally formed with the lower cup body 2, or can be manufactured separately and then fixed to the inner wall of the lower cup body 2 by bonding or clamping.

[0060] like Figure 4 As shown, a first external thread 27 is provided on the outer wall of the upper end of the lower cup body 2. Figure 10 As shown, the upper cup body 1 includes a first cylindrical section 11, a truncated cone section 13 and a second cylindrical section 12 from top to bottom. The inner wall of the second cylindrical section 12 is provided with a first internal thread 121 adapted to the first external thread 27, which facilitates the connection between the upper cup body 1 and the lower cup body 2. The truncated cone section 13 is provided with an exhaust hole 131, so that the hot air flowing to the upper side can be discharged to avoid the sudden generation of excessive hot air pressure and cause an explosion. A plurality of limiting protrusions 132 are convexly provided on the inner wall of the truncated cone section 13 to prevent the heated tank body 7 from moving horizontally. For the heated tank body 7 with a conical surface structure on the upper part, the inner wall of the truncated cone section 13 can cooperate with the conical surface structure of the heated tank body 7 to prevent the tank body from moving. In addition, an inward flange 112 is provided at the upper end of the first cylindrical section 11, and the flange 112 can be stuck to the inner side of the top edge of the heated tank body 7, and the lips of people will contact the flange 112 when drinking hot drinks, which can prevent the mouth from being scalded, and at the same time, it can form a downward limit for the heated tank body 7 to prevent the heated tank body 7 from moving up and down. In addition, a second external thread 111 is provided on the outer wall of the first cylindrical section 11, and a second internal thread matching the second external thread 111 is provided on the inner wall of the cover body 4, which facilitates the connection between the cover body 4 and the upper cup body 1.

[0061] In other embodiments of the self-heating device: the abutting legs may not be provided on the cylinder body of the mounting cylinder, the water bag is only limited by the lower cup body, and there is no structure to abut the sealing membrane. Of course, the piercing teeth of the piercing body still need to maintain a certain distance from the water bag sealing membrane to ensure that the water bag sealing membrane can be punctured only by pressing the piercing body.

[0062] In other embodiments of the self-heating device: the mounting tube and the lower cup body can be connected by bonding. In this case, there is no need to set the outer flange of the tube mouth and the annular protrusion. Of course, only one of them can also be set; in other embodiments, the mounting tube and the lower cup body can also be integrally injection molded.

[0063] In other embodiments of the self-heating device: a way to prevent the puncture body from falling out of the mounting tube may be to provide a stop edge on the outer peripheral surface of the puncture end of the puncture body (the rear side of the root of the puncture tooth), and the stop edge is located on the side of the baffle on the mounting tube close to the water bag, and cooperates with the baffle to stop under the action of a spring, which can also prevent the puncture body from falling out.

[0064] In other embodiments of the self-heating device: the size of the tube cover can be the same as the size of the tube mouth of the puncturing tube. In this case, a stop edge can also be provided on the edge of the tube cover. The stop edge can also cooperate with the inner flange of the tube mouth of the mounting tube to prevent the puncturing body from escaping from the mounting tube, and the spring at this time presses on the stop edge; the outer shape of the tube cover or the stop edge can also be circular, and in this case, the inner cavity of the mounting tube is a cylindrical cavity.

[0065] In other embodiments of the self-heating device: the piercing body may not have a main body of a cylindrical structure. For example, the piercing body may have a longer section of a solid structure, and a cylindrical structure is only provided at one end where the piercing teeth are provided.

[0066] In other embodiments of the self-heating device: when the lengths of the piercing teeth in each tooth group are different, two adjacent piercing teeth may have the same length, two long piercing teeth of the same length are adjacent to each other, and next to them are two adjacent short piercing teeth, and one short piercing tooth and an adjacent long piercing tooth form a tooth group.

[0067] In other embodiments of the self-heating device: according to the specific size of the cylindrical piercing end, the total number of designed piercing teeth can be divided into only two tooth groups, three tooth groups or four tooth groups, and the number of piercing teeth in each tooth group can be designed as needed. Of course, there can also be only one tooth group, which only includes two teeth, and each tooth covers a 180-degree cutting range. In other embodiments, the lengths of all piercing teeth can be equal, and at this time, the tooth tips of all piercing teeth pierce the water bag sealing film at the same time.

[0068] In other embodiments of the self-heating device: the water bag may not be in the form of an eight-cup yogurt box, that is, the object to be punctured is not the sealing film, but other types of water bags in the prior art, such as a soft plastic bag containing liquid. In this case, the arrangement of the water bag also needs to refer to the methods in the prior art.

[0069] The embodiment of the puncture component in the present invention is as follows: the specific structure of the puncture component is the same as the puncture component in any embodiment of the self-heating device described above, and will not be repeated here.

[0070] An embodiment of the puncturing body in the present utility model is as follows: The specific structure of the puncturing body is the same as that of the puncturing body in any one of the above-described self-heating devices, and will not be repeated here.

Claims

1. A puncturing body, characterized in that, One end of the puncturing body is a pressing end for manual pressing by a human hand, and the other end is a cylindrical puncturing end. The cylindrical puncturing end is provided with a plurality of puncturing teeth extending away from the pressing end and for puncturing the water bag. Each puncturing tooth is continuously arranged along the cylindrical puncturing end. Each puncturing tooth has a tooth tip and a tooth root. The tooth width of each puncturing tooth gradually increases from the tooth tip to the tooth root. The tooth roots of any two adjacent puncturing teeth are connected to completely cut off the local material of the water bag. The inner cavity of the cylindrical puncturing end forms a receiving cavity capable of receiving the cut local material of the water bag.

2. The puncturing body according to claim 1, characterized in that, At least two continuously arranged puncturing teeth form a tooth group. All the puncturing teeth are divided into at least two tooth groups, and the lengths of the respective puncturing teeth in each tooth group are not the same.

3. The puncturing body according to claim 2, wherein The lengths of any two adjacent puncturing teeth are not the same.

4. The puncturing body according to any one of claims 1 to 3, characterized in that, The puncturing body includes a puncturing cylinder having a cylinder cover at one end and an opening at the other end. The cylinder cover of the puncturing cylinder constitutes the pressing end, and the open end of the puncturing cylinder constitutes the cylindrical puncturing end.

5. The puncturing body according to claim 4, wherein The edge of the cylinder cover is provided with a retaining edge for retaining and cooperating with the inner flange of the cylinder mouth of the mounting cylinder in the puncturing assembly. A plurality of deformation grooves are evenly arranged on the retaining edge for elastic deformation of the retaining edge to cross the inner flange of the cylinder mouth when the puncturing body is inserted into the mounting cylinder.

6. A puncturing component, comprising an installation cylinder, a puncturing body that is slidably assembled in the installation cylinder in a guiding manner, and a spring disposed between the puncturing body and the installation cylinder, characterized in that, The puncturing body is the puncturing body according to any one of claims 1 to 4.

7. The puncturing assembly according to claim 6, wherein The mounting cylinder includes a cylinder body. One end of the cylinder body is provided with an inner flange extending inward. The other end of the cylinder body is provided with a baffle. The baffle is provided with a through hole for the cylindrical puncturing end of the puncturing body and each puncturing tooth to pass through; the pressing end of the puncturing body is provided with a retaining edge extending outward and for retaining and cooperating with the inner flange of the cylinder mouth. A plurality of deformation grooves are evenly arranged on the retaining edge for elastic deformation of the retaining edge to cross the inner flange of the cylinder mouth when the puncturing body is inserted into the mounting cylinder.

8. The puncturing assembly according to claim 6, wherein The mounting cylinder includes a cylinder body. One end of the cylinder body is provided with an outer flange extending outward and for retaining and cooperating with the outer wall surface of the cup body of the self-heating device. An annular protrusion for retaining and cooperating with the inner wall surface of the cup body is provided on the outer peripheral surface of the cylinder body. An annular groove is formed between the annular protrusion and the outer flange of the cylinder mouth. The size and shape of the annular groove are adapted to the size and shape of the mounting opening on the cup body.

9. The puncturing assembly according to claim 6, wherein The mounting cylinder includes a cylinder body. The end of the cylinder body facing the inside of the cup body of the self-heating device is provided with two abutting legs for abutting against the sealing film of the water bag, and the two abutting legs are horizontally spaced apart during use.

10. A self-heating device, comprising a cup body, a water bag arranged inside the cup body, and a puncturing assembly installed on the cup body, characterized in that, The puncturing assembly is the puncturing assembly according to any one of claims 6 to 9.

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