Cup body of self-heating device and self-heating device

Abstract

The utility model provides a cup body of a self-heating device and the self-heating device, and belongs to the technical field of heating devices which generate heat through exothermic reaction. An arrangement space for arranging the water bag and the self-heating bag is arranged in the cup body, an opening for the water bag and the self-heating bag to enter is formed in the upper end of the cup body, two guiding structures which extend up and down and are arranged at intervals are arranged in the cup body, and each guiding structure comprises a guiding groove for the hard sealing edge of the water bag to extend in. The guide grooves are used for guiding the water bag in the water bag feeding process and limiting the horizontal position of the water bag after the water bag is fed in place, the cup body is provided with an installation opening used for installing the puncturing assembly, and the installation opening corresponds to the interval between the two guide structures so that the puncturing assembly can puncture a sealing film of the water bag. The guide groove is used for guiding the hard sealing edge of the water bag, after the water bag is installed in place, the guide groove can limit the horizontal position of the water bag, the water bag is prevented from moving, and matching with the water bag with the determined shape and the hard sealing edge is achieved.

Description

Technical Field

[0001] This utility model relates to a cup body and a self-heating device, belonging to the technical field of heating devices that generate heat through exothermic reactions. Background Technology

[0002] In daily life, when people need to eat hot canned food (such as beverages, eight-treasure porridge, etc.), they usually use heating containers to heat the canned food. However, heating containers generally require electricity or open flame. In situations where it is inconvenient to use electricity or open flame, self-heating devices are needed.

[0003] For example, Chinese utility model patent CN214525737U discloses a self-heating device. This device includes a storage cavity (i.e., a cup body), inside which is a sealed water bag, a self-heating pack, and a water bag puncture component. The self-heating pack is located below the sealed water bag and the water bag puncture component, and the main reactant is quicklime. In use, pressing the water bag puncture component punctures the sealed water bag, allowing water to flow onto the self-heating pack below, triggering an exothermic reaction. The generated heat heats canned food placed inside the cup body. To facilitate the installation of the sealed water bag, a baffle is fixed to the inner wall of the cup body. The baffle includes a horizontal extension and a vertical extension. The sealed water bag is placed on the horizontal extension and between the vertical extension and the inner wall of the cup body. The vertical extension has a perforation for a puncture needle to pass through. The horizontal extension connects to the inner wall of the cup body and has perforations to allow water to flow onto the self-heating pack below after the water bag is punctured. In addition, the water bag is made of elastic material, which allows the water bag to expand after being filled with water so that water can be sprayed out after puncturing.

[0004] The water bag in the aforementioned self-heating device is made of elastic material and has no fixed shape. Therefore, during transportation and movement, the water bag will move between the baffle and the inner wall of the cup, constantly being squeezed and deformed into various shapes. Once the deformation is severe and it comes into contact with the sharp edge of the baffle, it may be torn, causing the water bag to rupture unexpectedly, thus leading to premature failure of the self-heating device. Currently, existing technologies include small containers with a defined shape, better strength, and the ability to store water, such as the common eight-cup yogurt container. This type of container includes a body that can hold liquid, and the opening of the body has an outwardly extending rigid sealing edge for heat-sealing and fixing the sealing film. The thickness of the rigid sealing edge is greater than the thickness of the body. Using such a container to make the water bag can solve the problem of the water bag being easily deformed. However, how to install this water bag into the cup of the self-heating device so that the cup body has a good restraining effect on the water bag is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] The purpose of this utility model is to provide a cup body for a self-heating device, so as to solve the problem that there is a lack of suitable cup bodies for water bags with a defined shape and a hard sealing edge in the prior art; the purpose of this utility model is also to provide a self-heating device including the above-mentioned cup body.

[0006] To achieve the above objectives, the cup body of the self-heating device in this utility model adopts the following technical solution:

[0007] A cup body for a self-heating device has an arrangement space for arranging a water supply pack and a self-heating pack. The upper end of the cup body has an opening for inserting the water supply pack and the self-heating pack. The cup body is provided with two guide structures that extend vertically and are spaced apart. The guide structure includes a guide groove extending into the rigid seal of the water supply pack. The guide groove is used to guide the water supply pack during the insertion process and to limit the horizontal position of the water supply pack after it is in place. The cup body is provided with an installation port for installing a puncture component. The installation port corresponds to the spacing between the two guide structures so that the puncture component can puncture the sealing film of the water supply pack.

[0008] The beneficial effects of the above technical solution are as follows: This utility model is a pioneering invention, designing a new cup body for a self-heating device, addressing the existing water packs with a defined shape and a rigid sealing edge. This cup body has space for arranging the water pack and the self-heating pack, meeting their arrangement requirements. The upper end of the cup body has an opening to facilitate the insertion of the water pack and the self-heating pack. The cup body contains two vertically extending and spaced-apart guide structures, each including a guide groove into which the rigid sealing edge of the water pack extends. The guide groove guides the water pack during insertion and limits its position after insertion. Regarding the horizontal position of the water bag, this invention utilizes the rigid sealing edge of the water bag itself and designs a matching guide structure. The guide groove not only guides the installation of the water bag, but also cooperates with the rigid sealing edge of the water bag to limit the horizontal position of the water bag and prevent it from shifting after being installed. The cup body is provided with an installation port for installing the piercing component. The installation port corresponds to the interval between the two guide structures, so that the piercing component can pierce the sealing film of the water bag. This achieves the correspondence between the arrangement position of the guide structure and the position of the installation port, making it easy for the piercing component to pierce the water bag and ensuring the normal operation of the self-heating device.

[0009] Furthermore, each guide structure includes two guide protrusions protruding from the inner wall of the cup, and the two guide protrusions and the inner wall of the cup together form the guide groove.

[0010] Furthermore, the lower ends of the two guide protrusions in each guide structure are connected by a support protrusion. The top surface of the support protrusion is located between the two guide protrusions and forms a support surface for supporting the rigid sealing edge of the water pack. There is a set distance between the support surface and the bottom wall of the cup body so that the water pack is arranged above the self-heating pack.

[0011] Furthermore, at least one guide ridge in each guide structure includes an upper inclined extension and a lower vertical extension, such that the guide groove includes an upper gradient groove width section and a lower equidistant groove width section, the groove width of the gradient groove width section gradually decreasing from top to bottom.

[0012] Furthermore, the upper ends of each guide ridge extend to the upper surface of the cup body.

[0013] Furthermore, the cup body also has a receiving space for accommodating the container to be heated. The receiving space is located above the arrangement space. Each guide protrusion includes an upper part corresponding to the receiving space and a lower part corresponding to the arrangement space. The height of the upper part protruding from the inner wall of the cup body is less than the height of the lower part protruding from the inner wall of the cup body.

[0014] Furthermore, a limiting protrusion is provided on the inner wall of the cup at a position opposite to the installation port for contacting and limiting the water bag box body's outer side wall.

[0015] Furthermore, the upper part of the limiting protrusion is provided with a guide slope for guiding the water bottle into place.

[0016] Furthermore, the puncture assembly includes a mounting cylinder mounted on the cup body, a puncture body slidably mounted within the mounting cylinder, and a spring disposed between the puncture body and the mounting cylinder. The mounting cylinder has a contact end face for contacting the sealing film of the water bag, and the puncture body does not protrude from the contact end face when not pressed. Attached Figure Description

[0017] Figure 1 This is a front perspective view of an embodiment of the self-heating device of this utility model;

[0018] Figure 2 This is a top view of the lower cup body, puncture component, and water bag in an embodiment of the self-heating device of this utility model;

[0019] Figure 3 This is a perspective view of the lower cup body from one angle in an embodiment of the self-heating device of this utility model;

[0020] Figure 4 This is a perspective view of the lower cup body from another angle in an embodiment of the self-heating device of this utility model;

[0021] Figure 5 This is a cross-sectional view of the lower cup body in an embodiment of the self-heating device of this utility model;

[0022] Figure 6 This is a perspective view (one viewpoint) of the mounting cylinder in an embodiment of the self-heating device of this utility model.

[0023] Figure 7 This is a perspective view (another perspective) of the mounting cylinder in an embodiment of the self-heating device of this utility model;

[0024] Figure 8 This is a perspective view of the puncture body in an embodiment of the self-heating device of this utility model;

[0025] Figure 9 This is a cross-sectional view of the puncturing body of the puncturing component in an embodiment of the self-heating device of this utility model;

[0026] Figure 10 This is a cross-sectional view of the upper cup body in an embodiment of the self-heating device of this utility model.

[0027] In the attached diagram, the following numbers are used: 1 for the upper cup body, 11 for the first cylindrical section, 111 for the second external thread, 112 for the flange, 13 for the second cylindrical section, 121 for the first internal thread, 12 for the frustum section, 131 for the vent hole, and 132 for the limiting protrusion.

[0028] 2 is the lower cup body, 21 is the first guide protrusion, 211 is the inclined extension section, 212 is the vertical extension section, 22 is the second guide protrusion, 221 is the upper part, 222 is the lower part, 23 is the support protrusion, 24 is the limiting protrusion, 25 is the support limiting rib, 251 is the bottom support surface, 252 is the side limiting surface, 26 is the mounting port, and 27 is the first external thread;

[0029] 3 is the piercing component, 31 is the mounting cylinder, 311 is the cylinder body, 312 is the cylinder cover, 313 is the inner flange of the cylinder opening, 314 is the baffle, 315 is the outer flange of the cylinder opening, 316 is the annular protrusion, 317 is the supporting leg, 318 is the passage, 32 is the piercing body, 321 is the piercing cylinder, 322 is the cylinder cover, 323 is the retaining edge, 324 is the deformation groove, 325 is the piercing tooth, and 33 is the spring.

[0030] 4 is the lid, 5 is the water tank, 51 is the box, 52 is the rigid sealing edge, 6 is the self-heating pack, and 7 is the tank to be heated. Detailed Implementation

[0031] To address the technical problems existing in the prior art, the basic concept of this utility model is to design a lower cup body with an internal guiding structure. The guiding groove of the guiding structure guides the rigid sealing edge of the water bag. After the water bag is installed in place, the guiding groove can also limit the horizontal position of the water bag to prevent the water bag from moving.

[0032] Example 1 of the self-heating device in this utility model:

[0033] like Figure 1 , Figure 2 As shown, the self-heating device includes an upper cup body 1, a lower cup body 2, a puncture component 3, a lid 4, a water bag 5, and a self-heating bag 6. The puncture component 3 is installed on the lower cup body 2. The water bag 5 and the self-heating bag 6 are arranged inside the lower cup body 2, with the self-heating bag 6 located below the water bag 5 and the puncture component 3. The lower cup body 2 has a space for arranging the water bag 5 and the self-heating bag 6, and the upper end of the lower cup body 2 has an opening for inserting the water bag 5 and the self-heating bag 6. The water bag 5 includes a box body 51 and a liquid sealed and stored inside the box body 51. The shape of the box body 51 is basically similar to that of an eight-cup yogurt container in the prior art. The box body 51 itself has a certain strength and can maintain a certain shape. The opening of the box body 51 is provided with an outwardly extending rigid sealing edge 52. The rigid sealing edge 52 is used for heat sealing and fixing the sealing film, so its thickness is greater than the thickness of the box body 51.

[0034] To facilitate the installation of the water tank 5, two guide structures extending vertically and spaced apart are provided inside the lower cup body 2. The guide structures include guide grooves into which the rigid seal of the water tank 5 extends along 52. Combined with... Figure 3 , Figure 4 , Figure 5 As shown, each guide structure includes two guide protrusions protruding from the inner wall of the lower cup body 2, namely the first guide protrusion 21 and the second guide protrusion 22. The two guide protrusions and the inner wall of the lower cup body 2 together form the aforementioned guide groove. The openings of the two guide grooves face each other. When the water bag 5 is inserted, the rigid seal 52 extends into the guide grooves on both sides to guide the insertion of the water bag 5. After installation, the groove wall of the guide groove and the rigid seal 52 stop and fit together, securing the water bag 5 in the lower cup body 2 and preventing horizontal movement.

[0035] By forming guide grooves by protruding guide strips on the inner wall of the lower cup body 2, there is a sufficient gap between the two guide grooves. This allows for the full utilization of the space inside the lower cup body 2 to arrange the water tank 5 while meeting the installation requirements of the puncture component 3. This ensures that the water tank 5 has a certain volume, thereby ensuring sufficient liquid volume and a complete exothermic reaction.

[0036] Since the water tank 5 is located above the self-heating pack 6, the lower ends of the two guide protrusions in each guide structure are connected by a support protrusion 23. The lower end of the support protrusion 23 extends to the bottom wall of the lower cup body 2. The top surface of the support protrusion 23 is located between the two guide protrusions and forms a support surface for supporting the rigid sealing edge 52 of the water tank 5. The two support surfaces are at the same height, limiting the extreme position of the water tank 5 when installed downwards. There is a set distance between the support surface and the bottom wall of the lower cup body 2. This set distance is not less than the height of the self-heating pack 6 to meet the arrangement of the self-heating pack 6 and prevent the rigid sealing edge 52 of the water tank 5 from pressing against the self-heating pack 6.

[0037] The lower cup body 2 is provided with an installation port 26 for installing the piercing component 3. The installation port 26 corresponds to the interval between the two guide structures, so that after the water bag 5 is installed in place, the sealing film of the water bag 5 is directly facing the piercing component 3, thereby facilitating the piercing component 3 to pierce the sealing film of the water bag 5. Since the lower cup body 2 is a cylindrical structure, in order to better limit the water bag 5 during and after installation, a limiting protrusion 24 is provided on the inner wall of the lower cup body 2 at a position opposite to the installation port 26 for contact and limiting with the outer wall of the bottom of the box body 51. Two limiting protrusions 24 are arranged in parallel at intervals.

[0038] When installing the water tank 5, to facilitate the entry of the rigid sealing edge 52 of the water tank 5 into the guide groove, the upper ends of each guide protrusion extend to the upper end face of the lower cup body 2, making it easier for the rigid sealing edge 52 to align with the guide groove. At the same time, in each guide structure, the guide protrusion near the installation port 26, namely the first guide protrusion 21, includes an upper inclined extension section 211 and a lower vertical extension section 212, while the upper part 221 and the lower part 222 of the second guide protrusion 22 both extend vertically. This makes the guide groove include an upper gradually decreasing groove width section (formed by the inclined extension section 211 and the upper part 221) and a lower equidistant groove width section (formed by the vertical extension section 212 and the lower part 222). The groove width of the gradually decreasing groove width section gradually decreases from top to bottom, forming a funnel-like structure, which can guide the rigid sealing edge 52. In addition, although the upper end of the limiting protrusion 24 does not extend to the upper end surface of the lower cup body 2, each limiting protrusion 24 has a guiding slope for guiding the water bag 5 to be inserted. That is, the height of the limiting protrusion 24 protruding from the inner wall of the lower cup body 2 is divided into upper and lower parts. The height of the upper part gradually increases from top to bottom, while the height of the lower part is equal.

[0039] like Figure 1 As shown, the lower cup body 2 has a receiving space for accommodating the can 7 to be heated. This receiving space is located above the aforementioned arrangement space, meaning the can 7 to be heated is located above the water tank 5. The can 7 to be heated can be an aluminum can containing beverages or food such as eight-treasure porridge. To support the can 7 to be heated, as... Figures 2-5 As shown, four circumferentially distributed support and limiting ribs 25 are also provided on the inner wall of the lower cup body 2. The mounting port 26 is located between two adjacent support and limiting ribs 25, and the limiting rib 24 is located between another two adjacent support and limiting ribs 25. Each guide structure is also located between two adjacent support and limiting ribs 25, and the distance between two guide structures is less than the inner diameter of the lower cup body 2, ensuring that the water bag 5 can better cooperate with the puncture component 3, while also making full use of the inner wall surface of the lower cup body 2. The overall structure is reasonable and compact.

[0040] The lower ends of each supporting and limiting rib 25 extend to the bottom wall of the lower cup body 2. When installing the self-heating pack 6, it can be directly installed to contact the bottom wall of the lower cup body 2, and the lower parts of each supporting and limiting rib 25, each supporting rib 23, and each limiting rib 24 are used to lock it in place, preventing the self-heating pack 6 from moving. The upper ends of each supporting and limiting rib 25 include a bottom supporting surface 251 for supporting the bottom of the tank body 7 to be heated and a side limiting surface 252 for limiting the sides of the tank body 7 to be heated. This achieves both support and prevents the tank body 7 to be heated from moving horizontally.

[0041] The upper ends of each supporting and limiting rib 25 extend to the middle of the lower cup body 2. In this way, when the water bag 5 is punctured, the liquid flowing out flows downward to the self-heating bag 6 and undergoes an exothermic reaction. The heat generated can flow upward through the gap between two adjacent supporting and limiting ribs 25. At the same time, an annular space can be formed between the tank to be heated 7 and the inner wall of the lower cup body 2, and hot air can also flow between the annular space to heat the outer peripheral surface of the tank to be heated 7 and improve the heating effect.

[0042] The aforementioned inclined extension 211 and upper portion 221 are both located within the accommodating space, while the vertical extension 212 and lower portion 222 are both located within the arrangement space. The height of the inclined extension 211 and upper portion 221 protruding from the inner wall of the lower cup body 2 is less than the height of the vertical extension 212 and lower portion 222 protruding from the inner wall of the lower cup body 2. Similarly, the height of the vertical extension 212 and lower portion 222 protruding from the inner wall of the lower cup body 2, and the height of the limiting protrusion 24 protruding from the inner wall of the lower cup body 2, are all less than the height of the supporting limiting rib 25 protruding from the inner wall of the lower cup body 2. This prevents the heated container 7 from getting stuck between other protrusions when it is installed. In this embodiment, the protrusion height of the inclined extension 211 and upper portion 221 is smaller, resulting in a larger distance between the inclined extension 211 and upper portion 221 and the outer wall of the heated container 7. This reduces resistance to the hot air as it flows within the annulus, facilitating smooth airflow. Similarly, the guide slope on the limiting protrusion 24 extends from top to bottom to the middle of the limiting protrusion 24, which can also play the same role. The lower end of the guide slope, the upper end of the supporting limiting protrusion 25, the lower end of the inclined extension section 211 and the upper part 221 are basically at the same height.

[0043] It should be noted that the aforementioned guide protrusions, support protrusions 23, support limiting protrusions 25, and limiting protrusions 24 can all be integrally formed with the lower cup body 2, or they can be manufactured separately and then fixed to the inner wall of the lower cup body 2 by means of bonding or snap-fitting.

[0044] like Figure 2As shown, the puncture assembly 3 includes a mounting cylinder 31, a puncture body 32 guided and slidably assembled within the mounting cylinder 31, and a spring 33 disposed between the puncture body 32 and the mounting cylinder 31. (Specifically combined...) Figure 6 , Figure 7 As shown, the mounting cylinder 31 includes a cylinder body 311. At one end of the cylinder body 311, there is an inwardly extending inner flange 313 and an outwardly extending outer flange 315. The inner flange 313 engages with the piercing body 32 to prevent the piercing body 32 from detaching from the cylinder body 311. The outer flange 315 engages with the outer wall surface of the lower cup body 2. An annular protrusion 316 is provided on the outer circumferential surface of the cylinder body 311 to engage with the inner wall surface of the lower cup body 2. The annular protrusion 316 and the outer flange 315 form an annular groove. The size and shape of the annular groove are adapted to the size and shape of the mounting opening 26 on the lower cup body 2. When assembling the mounting cylinder 31 onto the lower cup body 2, the cylinder 311 passes through the mounting opening 26 until the annular protrusion 316 abuts against the outer wall surface of the lower cup body 2. The lower cup body 2 and the mounting cylinder 31 are preferably injection molded. The height of the annular protrusion 316 protruding from the outer circumference of the cylinder 311 is not much. Therefore, by pressing the mounting cylinder 31 inward, the annular protrusion 316 can pass over the mounting opening 26 and then cooperate with the outer flange 315 of the cylinder opening to be secured onto the lower cup body 2.

[0045] A cap 312 is connected to the outer flange 315 of the cylinder opening, which can be opened and closed. When closed, it can seal the opening at one end of the cylinder body 311 to prevent personnel from accidentally touching the puncture body 32 inside and causing the water tank 5 to be accidentally punctured. The cap 312 and the outer flange 315 of the cylinder opening are respectively provided with locking protrusions. When the cap 312 is closed, the two locking protrusions stop it and prevent the cap 312 from falling off freely.

[0046] Additionally, a baffle 314 is provided at the opening of the other end of the cylinder 311, and a passage 318 is provided on the baffle 314. At the same time, this end of the cylinder 311 is located inside the lower cup body 2, and this end is also provided with abutting legs 317 for abutting against the sealing film of the water tank 5. There are two abutting legs 317, which are arranged horizontally at intervals during use. The end face of the abutting legs 317 contacts the sealing film of the water tank 5, so that during transportation, when the liquid in the water tank 5 continuously flows and causes the sealing film to bulge, the end face of the abutting legs 317 can limit the sealing film, preventing the sealing film from bulging excessively and accidentally contacting the puncture body 32 and being punctured.

[0047] One end of the piercing body 32 is a pressing end for manual pressure, and the other end is a cylindrical piercing end. For example... Figure 8 , Figure 9As shown, the piercing body 32 includes a piercing tube 321 with a cap 322 at one end and an opening at the other end. That is, the main body of the piercing body 32 is a cylindrical structure, and the piercing tube 321 is a cylindrical tube. The entire cap 322 constitutes the pressing end. The size of the cap 322 is larger than the size of the piercing tube 321. It not only seals one end of the piercing tube 321 but also has an extra edge. The overall shape of the cap 322 is elliptical, conforming to the shape of a human finger, which is not only aesthetically pleasing but also increases the force-bearing area.

[0048] The open end of the piercing tube 321 forms a cylindrical piercing end, which is provided with multiple piercing teeth 325 extending backwards from the pressing end and used to pierce the sealing film of the water pack 5. Each piercing tooth 325 is continuously arranged along the cylindrical piercing end. Each piercing tooth 325 has a tooth tip and a tooth root, and the tooth width of each piercing tooth 325 gradually increases from the tooth tip to the tooth root. The piercing tooth 325 is generally triangular, and to facilitate piercing the sealing film, thin blades are provided on both sides from the tooth tip to the tooth root.

[0049] The roots of any two adjacent piercing teeth 325 are connected. When the pressing end of the piercing body 32 is subjected to force, the entire piercing body 32 moves towards the water bag 5. The tips of the piercing teeth 325 first contact and puncture the sealing film of the water bag 5. Due to the spacing between the tips of the piercing teeth 325, the sealing film is punctured at multiple points at this stage. As the piercing body 322 continues to move, the roots of the piercing teeth 325 gradually contact the sealing film. During this process, the punctured openings on the sealing film gradually enlarge, and finally, a portion of the sealing film material is completely severed, forming an opening with the same size as the cylindrical piercing end. The severed portion of the sealing film material can then enter the inner cavity of the cylindrical piercing end. When the piercing body 32 retracts, the liquid inside the water bag 5 can flow smoothly outward through the opening without blocking it. Furthermore, the two support legs 317 on the mounting cylinder 31 are arranged horizontally at intervals, and the space between them is vertically connected, so the liquid in the water tank 5 can flow smoothly downwards and onto the self-heating pack 6 to fully generate an exothermic reaction, ensuring the exothermic reaction effect of the self-heating pack 6.

[0050] The edge of the cap 322 is provided with a retaining edge 323 for stopping and engaging with the inner flange 313 of the mounting cylinder 31. When installing the piercing body 32, first, the spring 33 is placed on the outside of the piercing cylinder 321, and then the cylindrical piercing end of the piercing body 32 is inserted into the cylinder body 311 of the mounting cylinder 31 with the piercing end facing inward until the retaining edge 323 abuts against the inner flange 313 of the cylinder opening. Press the piercing body 32 firmly to deform the retaining edge 323 and make it extend beyond the inner flange 313 of the cylinder opening. Since one end of the spring 33 presses against the cap 322 and the other end presses against the baffle 314 of the mounting cylinder 31, the retaining edge 323 and the inner flange 313 of the cylinder opening stop and engage under the reaction force of the spring 33, so that the piercing body 32 cannot be removed from the mounting cylinder 31. To facilitate the deformation of the retaining edge 323 during loading, multiple deformation grooves 324 are evenly distributed on the retaining edge 323 to facilitate its elastic deformation and allow it to pass over the inner flange 313 of the cylinder opening.

[0051] During the insertion of the piercing body 32, each piercing tooth 325 passes through the through-hole 318 on the baffle 314. After insertion, without pressing the piercing body 32, none of the piercing teeth 325 protrude from the end faces of the two abutment legs 317, ensuring that the water bag 5 can only be punctured by pressing the piercing body 32. The through-hole 318 is a round hole, its size matching the outer diameter of the piercing cylinder 321, guiding the piercing body 32 during its movement. Simultaneously, the inner cavity of the cylinder 311 is an elliptical cavity, its size matching the outer contour of the baffle 323, also guiding the piercing body 32 during its movement.

[0052] In addition, to prevent hot air from flowing into the mounting cylinder 31 through the gap between the puncture cylinder 321 and the through port 318 when the self-heating pack 6 undergoes an exothermic reaction, and then flowing outward through the gap between the baffle 323 and the inner flange 313 of the cylinder opening, or directly flowing outward through the gap between the mounting cylinder 31 and the mounting port 26 of the lower cup body 2, thereby causing injury to personnel, a sealing ring can be installed on the inner wall of the through port 318 to seal against the outer circumferential surface of the puncture cylinder 321. At the same time, a sealing ring can be set between the outer flange 315 of the cylinder opening 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 mounting cylinder 31 and the mounting port 26 and prevent hot air leakage.

[0053] In addition, a first external thread 27 is provided on the upper outer wall of the lower cup body 2. For example... Figure 10As shown, the upper cup body 1 comprises, from top to bottom, a first cylindrical section 11, a frustum section 12, and a second cylindrical section 13. The inner wall of the second cylindrical section 13 is provided with a first internal thread 121 that matches the first external thread 27, facilitating the connection between the upper cup body 1 and the lower cup body 2. The frustum section 12 is provided with an exhaust port 131, allowing hot air flowing upwards to escape and preventing explosions caused by excessive sudden hot air pressure. Multiple limiting protrusions 132 are provided on the inner wall of the frustum section 12 to prevent horizontal movement of the container 7 to be heated. Simultaneously, for the container 7 with a conical structure at the top, the inner wall of the frustum section 12 can engage with the conical structure of the container 7 to prevent movement of the container 7. Furthermore, an inwardly turned flange 112 is provided at the upper end of the first cylindrical section 11. The flange 112 can be engaged with the inner side of the top edge of the can 7 to be heated. When people drink hot beverages, their lips will come into contact with the flange 112, which can prevent burns. At the same time, it can also provide a downward limit for the can 7 to be heated, preventing it 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 that matches the second external thread 111 is provided on the inner wall of the lid 4, which facilitates the connection between the lid 4 and the upper cup body 1.

[0054] In other embodiments of the self-heating device: since the height of the upper cup body is much smaller than the height of the lower cup body, the upper cup body can be directly made into a cup lid, which is equivalent to the self-heating device having only one lower cup body. At this time, the cup lid can be closed, thus eliminating the need for the lid body in the above embodiments.

[0055] In other embodiments of the self-heating device: the mounting cylinder of the puncture component may not have a contact end face that contacts the sealing film of the water tank, and there is a certain distance between the end face of the mounting cylinder and the sealing film of the water tank. In order to avoid the sealing film being accidentally punctured, the tip of the puncture body should preferably not protrude from the end face of the mounting cylinder.

[0056] In other embodiments of the self-heating device: the upper part of the limiting protrusion may not be provided with a guide slope, and the height of the limiting protrusion protruding from the inner wall of the lower cup is equal from top to bottom. Of course, it cannot be greater than the height of the supporting limiting rib protruding from the inner wall of the lower cup, so as to avoid affecting the installation of the tank to be heated.

[0057] In other embodiments of the self-heating device: depending on the size of the bottom area of ​​the water tank, three or more limiting protrusions can be provided; of course, only one limiting protrusion can be provided, in which case the width of the limiting protrusion can be appropriately widened to increase the contact area with the bottom of the tank.

[0058] In other embodiments of the self-heating device: the limiting protrusions on the inner wall of the lower cup body are no longer required, and the position of the water bag is limited only by the blocking relationship between the two guide grooves and the hard sealing edge of the water bag.

[0059] In other embodiments of the self-heating device: the height of the guide ridge protruding from the inner wall of the lower cup is equal from top to bottom, as long as it is less than the height of the supporting limit rib, to avoid affecting the installation of the tank to be heated.

[0060] In other embodiments of the self-heating device: the lower cup body may not have a space to accommodate the container to be heated, the container to be heated is placed in the upper cup body, and the upper cup body is provided with a limiting structure for limiting the heating container. In this case, there is no need to provide a supporting limiting rib on the inner wall of the lower cup body, and the lower cup body can be made lower. At the same time, the height of the guide rib protruding from the inner wall of the lower cup body and the height of the limiting rib protruding from the inner wall of the lower cup body can be set according to actual needs, without having to consider the height of the supporting limiting rib.

[0061] In other embodiments of the self-heating device: there is a certain distance between the upper end of each guide protrusion and the upper end face of the lower cup body. At this time, the water bag needs to be inserted into the cup body a little to correspond with the guide groove.

[0062] In other embodiments of the self-heating device: each of the two guide ridges in the guide structure may include an inclined extension section and a vertical extension section, and the inclined extension sections of the two guide ridges are arranged in a V-shape, and the width of the resulting gradient groove section still gradually decreases from top to bottom.

[0063] In other embodiments of the self-heating device: the two guide protrusions in each guide structure can both extend vertically, and the width of the guide groove is equal from top to bottom.

[0064] In other embodiments of the self-heating device: the self-heating pack can be arranged on the horizontal side of the water pack. After the water pack is punctured, the liquid flows in the horizontal plane and onto the self-heating pack to achieve an exothermic reaction. In this case, it is not necessary to set support protrusions at the lower ends of the two guide protrusions. The lower ends of the guide protrusions can directly extend to the bottom wall of the lower cup body.

[0065] In other embodiments of the self-heating device: each guide structure may include only one guide protrusion protruding on the inner wall of the lower cup body, the guide protrusion itself includes a guide groove, which is a U-shaped groove extending vertically; of course, in other embodiments, when the guide protrusion itself has a guide groove, the guide protrusion may not be protruding on the inner wall of the lower cup body, but may have a gap between it and the inner wall of the lower cup body. In this case, the guide protrusion can be regarded as an independently set guide rail, and the bottom end of the guide rail can be fixed on the bottom wall of the lower cup body.

[0066] In other embodiments of the self-heating device: the self-heating device may not include a puncture component, and the lower cup body only has a reserved installation port. When it is necessary to puncture the water bag, an additional puncture tool can be used to puncture the water bag through the installation port. Of course, in order to prevent foreign matter from entering the lower cup body, an openable and closable cap can be provided at the installation port.

[0067] The embodiment of the cup body of the self-heating device in this utility model is as follows: the specific structure of the cup body of the self-heating device is the same as the lower cup body structure in any of the above embodiments of the self-heating device, and will not be repeated here.

Claims

1. A cup body for a self-heating device, characterized in that, The cup body has a space for arranging the water supply pack and the self-heating pack. The upper end of the cup body has an opening for inserting the water supply pack and the self-heating pack. The cup body is provided with two guide structures that extend vertically and are spaced apart. The guide structure includes a guide groove extending into the rigid seal of the water supply pack. The guide groove is used to guide the water supply pack during the insertion process and to limit the horizontal position of the water supply pack after it is in place. The cup body is provided with an installation port for installing the puncture component. The installation port corresponds to the spacing between the two guide structures so that the puncture component can puncture the sealing film of the water supply pack.

2. The cup body of the self-heating device according to claim 1, characterized in that, Each guide structure includes two guide protrusions protruding from the inner wall of the cup, and the two guide protrusions and the inner wall of the cup together form the guide groove.

3. The cup body of the self-heating device according to claim 2, characterized in that, In each guide structure, the lower ends of the two guide protrusions are connected by a support protrusion. The top surface of the support protrusion is located between the two guide protrusions and forms a support surface for supporting the rigid sealing edge of the water pack. There is a set distance between the support surface and the bottom wall of the cup body so that the water pack is arranged above the self-heating pack.

4. The cup body of the self-heating device according to claim 2, characterized in that, In each guide structure, at least one guide ridge includes an upper inclined extension and a lower vertical extension, such that the guide groove includes an upper gradient groove width section and a lower equidistant groove width section, the groove width of the gradient groove width section gradually decreasing from top to bottom.

5. The cup body of the self-heating device according to any one of claims 2-4, characterized in that, The upper end of each guide ridge extends to the upper surface of the cup body.

6. The cup body of the self-heating device according to claim 5, characterized in that, The cup body also has a receiving space for accommodating the container to be heated. The receiving space is located above the arrangement space. Each guide protrusion includes an upper part corresponding to the receiving space and a lower part corresponding to the arrangement space. The height of the upper part protruding from the inner wall of the cup is less than the height of the lower part protruding from the inner wall of the cup.

7. The cup body of the self-heating device according to any one of claims 1-4, characterized in that, A limiting protrusion is provided on the inner wall of the cup, opposite to the installation port, for limiting contact with the outer wall of the bottom of the water bag box.

8. The cup body of the self-heating device according to claim 7, characterized in that, The upper part of the limiting protrusion is provided with a guide slope for guiding the water bottle into place.

9. A self-heating device, comprising a cup body, a water bag and a self-heating bag disposed within the cup body, and a puncture component mounted on the cup body, characterized in that, The cup body is the cup body according to any one of claims 1-8.

10. The self-heating device according to claim 9, characterized in that, The puncture assembly includes a mounting cylinder mounted on the cup body, a puncture body slidably mounted within the mounting cylinder, and a spring disposed between the puncture body and the mounting cylinder. The mounting cylinder has a contact end face for contacting the sealing film of the water bag, and the puncture body does not protrude from the contact end face when not pressed.

Images