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

Abstract

The utility model relates to the technical field of self-heating equipment, in particular to a cup body of a self-heating device and the self-heating device. Comprising an upper cup body and a lower cup body, the upper cup body is located at the upper end of the lower cup body and detachably connected with the lower cup body, the upper cup body and the lower cup body are each internally provided with a containing space used for containing a to-be-heated tank body, and a plurality of limiting protruding blocks are arranged on the inner side wall of the upper cup body in the circumferential direction and make contact with the outer side face of the to-be-heated tank body. And the upper cup body comprises a limiting structure which is used for preventing the axial movement of the tank body to be heated. The to-be-heated tank body is limited in the axial direction and the radial direction through the limiting protruding blocks and the limiting structures, and the stability of the to-be-heated tank body in the heating process is guaranteed; the utility model further aims to provide a self-heating device.

Description

TECHNICAL FIELD

[0001] The utility model relates to a self heating equipment technical field especially, it relates to a cup body of self heating device and self heating device. BACKGROUND

[0002] In daily life, when people need to eat hot canned food (such as beverage, eight treasures congee etc.), usually use heating container to heat canned food, but heating container generally needs to consume electricity or use open fire, in the occasion of inconvenient electricity and open fire, need to use self heating device.

[0003] The existing self heating device mostly directly places the can body needing heating in the cup body, makes it be in the upside of self heating bag, heats when the self heating bag gives off heat, and in order to guarantee the stability of the can body after being placed in the cup body, a cover is arranged on the upside of the cup body to limit the can body needing heating, this usually directly screwing a cover on the cup body can only prevent the axial movement of the can body needing heating, cannot limit the lateral surface of the can body needing heating, leads to the risk of radial movement of the can body needing heating in the heating process. SUMMARY

[0004] In order to solve the problem that the can body needing heating in the existing self heating device is not stable enough, the utility model aims at providing a cup body of self heating device, which limits the can body needing heating in axial and radial directions through limiting protrusions and limiting structures to ensure the stability of the can body needing heating in the heating process, and also aims at providing a self heating device.

[0005] To achieve the above object, the utility model discloses a cup body of self heating device adopts the following technical scheme:

[0006] A cup body of self heating device, including upper cup body and lower cup body, the upper cup body is located at the upper end of the lower cup body and is detachably connected with the lower cup body, the upper cup body and the lower cup body all have accommodating space for accommodating the can body needing heating in it, the inner side wall of the upper cup body is provided with a plurality of limiting protrusions in the circumference, the limiting protrusions are in contact with the lateral surface of the can body needing heating, and the upper cup body includes limiting structure and is used for preventing the axial movement of the can body needing heating.

[0007] Further, the limiting structure includes a circular truncated cone shaped limiting section, and the limiting section is in contact with the tapered surface of the upper end of the can body needing heating.

[0008] Further, the limiting structure includes a cover fixed on the upper end of the upper cup body, and the lower end surface of the cover is in contact with the upper end surface of the can body needing heating.

[0009] Further, a through hole is formed on the cover, and a ring-shaped flange is fixed on the through hole of the cover, the flange extends downward and into the to-be-heated can body, the flange is clamped on the inner side of the top edge of the to-be-heated can body, and thus the user can avoid contacting the can body when drinking the hot beverage in the to-be-heated can body, and the anti-scald effect is achieved.

[0010] Further, the upper cup body is provided with an exhaust hole.

[0011] Further, the upper end of the lower cup body extends into the upper cup body and is threadedly connected with the upper cup body.

[0012] The cup body of the self-heating device comprises an upper cup body and a lower cup body, the upper cup body and the lower cup body are detachably connected, the need that the lower cup body is placed in the to-be-heated can body and then the upper cup body is mounted on the lower cup body is met, the plurality of limiting protrusions arranged on the inner periphery of the upper cup body are in contact with the outer side of the to-be-heated can body to limit the radial movement of the to-be-heated can body, the radial movement of the to-be-heated can body is avoided, the limiting structure arranged on the upper cup body prevents the axial movement of the to-be-heated can body, and thus the stability of the to-be-heated can body during the heating process is achieved.

[0013] To achieve the above object, the self-heating device in the utility model adopts the following technical scheme:

[0014] The self-heating device comprises an upper cup body and a lower cup body, the lower cup body has a layout space for arranging a water bag and a self-heating bag, the layout space is located below the containing space, the upper end of the lower cup body has an opening for arranging the water bag and the self-heating bag, the lower cup body is provided with two guide structures extending upward and downward and arranged at intervals, the guide structure comprises a guide groove into which a hard sealing cover of the water bag extends, the guide groove is used for guiding the water bag during the arrangement of the water bag and limiting the horizontal position of the water bag after the water bag is arranged in place, the self-heating device further comprises a piercing assembly, the lower cup body is provided with a mounting opening for mounting the piercing assembly, the mounting opening corresponds to the interval between the two guide structures, so that the piercing assembly can pierce the sealing film of the water bag.

[0015] Further, each guide structure comprises two guide protrusions protruding on the inner wall of the lower cup body, and the two guide protrusions and the inner wall of the lower cup body jointly form the guide groove.

[0016] The lower ends of the two guide protrusions in each guide structure are connected through 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 hard sealing cover of the water bag, and the support surface has a set distance to the bottom wall of the lower cup body, so that the water bag is arranged above the self-heating bag.

[0017] Further, a limiting protrusion for limiting the contact of the box body of the water bag with the outer side wall is protruded on the position of the inner wall of the lower cup body opposite to the mounting opening.

[0018] Further, the piercing assembly includes a mounting cylinder mounted on the lower cup, a piercing body slidingly assembled in the mounting cylinder, and a spring arranged between the piercing body and the mounting cylinder, the mounting cylinder has a contact end surface for contacting the sealing film of the water bag, and the piercing body does not protrude from the contact end surface when not pressed.

[0019] The self-heating device has the following beneficial effects: the cup is improved for the water bag with a determined shape and a hard sealing edge in the prior art, the improved cup has an arrangement space for arranging the water bag and the self-heating bag, and the arrangement requirement of the water bag and the self-heating bag is met; the upper end of the cup has an opening, and the water bag and the self-heating bag are conveniently arranged in the cup; the cup is internally provided with two guide structures extending upward and downward and arranged at intervals, the guide structure includes a guide groove for extending into the hard sealing edge of the water bag, the guide groove is used for guiding the water bag during arrangement and limiting the horizontal position of the water bag after the water bag is arranged in place, the hard sealing edge of the water bag is matched with the guide structure, the arrangement of the water bag is guided by the guide groove, the hard sealing edge of the water bag is further blocked by the guide groove, the horizontal position of the water bag is limited, and the water bag is prevented from moving after being arranged in place; the cup is provided with a mounting port for mounting the piercing assembly, the interval between the mounting port and the two guide structures corresponds, the piercing assembly faces the sealing film of the water bag, the piercing assembly pierces the water bag, and the normal use function of the self-heating device is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 FIG. 1 is a front perspective view of the self-heating device of the present utility model;

[0021] Figure 2 FIG. 4 is a sectional view of the upper cup of the embodiment 1 of the present utility model;

[0022] Figure 3 FIG. 5 is a sectional view of the upper cup of the embodiment 2 of the present utility model;

[0023] Figure 4 FIG. 6 is a top view of the lower cup, the piercing assembly and the water bag in the embodiment 3 of the present utility model;

[0024] Figure 5 FIG. 7 is a perspective view of the lower cup of the embodiment 3 of the present utility model from one viewing angle;

[0025] Figure 6 FIG. 8 is a perspective view of the lower cup of the embodiment 3 of the present utility model from another viewing angle;

[0026] Figure 7 FIG. 9 is a sectional view of the lower cup of the embodiment 3 of the present utility model;

[0027] Figure 8A perspective view (one perspective) of the installation cylinder of the embodiment 3 of the utility model;

[0028] Figure 9 A perspective view (another perspective) of the installation cylinder of the embodiment 3 of the utility model;

[0029] Figure 10 A perspective view of the piercing body of the embodiment 3 of the utility model;

[0030] Figure 11 A sectional view of the piercing body of the piercing assembly of the embodiment 3 of the utility model.

[0031] The label in the drawing: 1 is the upper cup body, 11 is the first cylindrical section, 111 is the second external thread, 112 is the flange, 13 is the second cylindrical section, 121 is the first internal thread, 12 is the limiting section, 131 is the exhaust hole, 132 is the limiting protrusion;

[0032] 2 is the lower cup body, 21 is the first guide convex strip, 211 is the inclined extension section, 212 is the vertical extension section, 22 is the second guide convex strip, 221 is the upper part, 222 is the lower part, 23 is the support convex strip, 24 is the limiting convex strip, 25 is the support limiting convex rib, 251 is the bottom support surface, 252 is the side limiting surface, 26 is the installation port, 27 is the first external thread;

[0033] 3 is the piercing assembly, 31 is the installation cylinder, 311 is the cylinder body, 312 is the cylinder cover, 313 is the inner flange of the cylinder mouth, 314 is the baffle, 315 is the outer flange of the cylinder mouth, 316 is the annular protrusion, 317 is the abutting leg, 318 is the through port, 32 is the piercing body, 321 is the piercing cylinder, 322 is the cylinder cover, 323 is the baffle edge, 324 is the deformation groove, 325 is the piercing tooth, 33 is the spring;

[0034] 4 is the cover body, 5 is the water bag, 51 is the box body, 52 is the hard sealing edge, 6 is the self-heating bag, 7 is the to-be-heated tank body. DETAILED DESCRIPTION

[0035] The utility model will be further described in connection with the drawings and specific embodiments:

[0036] Embodiment 1

[0037] As Figures 1-2 shown, the cup body of the self-heating device provided in the embodiment comprises an upper cup body 1 and a lower cup body 2, the upper cup body 1 is located at the upper end of the lower cup body 2 and is detachably connected with the lower cup body 2, specifically, in the embodiment, the outer wall of the upper end of the lower cup body 2 is provided with a first external thread 27, and the inner wall of the second cylindrical section 13 is provided with a first internal thread 121 matched with the first external thread 27, so that the upper cup body 1 and the lower cup body 2 are conveniently connected.

[0038] The upper cup body 1 comprises, from top to bottom, a limiting structure, a second cylindrical section 13, and the limiting structure comprises a circular truncated cone-shaped limiting section 12, which is in contact with the tapered surface of the upper end of the to-be-heated tank body 7. For the to-be-heated tank body 7 with a tapered upper portion, the inner wall of the limiting section 12 can be in contact with the tapered surface of the to-be-heated tank body 7, thereby preventing the to-be-heated tank body 7 from moving.

[0039] Both the upper cup body 1 and the lower cup body 2 have a containing space for containing the to-be-heated tank body 7, and the inner side wall of the upper cup body 1 is uniformly provided with four limiting protrusions 132 in the circumferential direction, which are in contact with the outer side of the to-be-heated tank body 7, thereby preventing the to-be-heated tank body 7 from moving horizontally.

[0040] The upper cup body 1 is provided with an exhaust hole 131, so that the hot gas flowing upward can be discharged, thereby preventing the explosion caused by the excessive pressure of the hot gas generated suddenly.

[0041] When the to-be-heated tank body 7 is placed in the lower cup body 2, the upper cup body 1 is screwed on the lower cup body 2 by connecting the first inner thread 121 on the second cylindrical section 13 with the first outer thread 27 on the lower cup body 2, at this time, the end surface of the limiting protrusion 132 on the upper cup body 1 is in contact with the side surface of the to-be-heated tank body 7, and the inner wall of the limiting section 12 on the upper cup body 1 is in contact with the tapered surface of the to-be-heated tank body 7, thereby preventing the to-be-heated tank body 7 from moving, and achieving the stability of the to-be-heated tank body 7 during the heating process.

[0042] Embodiment 2

[0043] As shown in Figure 3 , the same as embodiment 1 will not be repeated, and the difference is that the upper cup body 1 comprises, from top to bottom, a first cylindrical section 11, a limiting section 12, and a second cylindrical section 13, and the limiting structure comprises a cover fixed on the upper end of the first cylindrical section 11, and the lower end surface of the cover is in contact with the upper end surface of the to-be-heated tank body 7.

[0044] The cover is provided with a through hole, and the annular flange 112 is fixed at the through hole of the cover, and the flange 112 extends downward and into the to-be-heated tank body 7. The flange 112 is clamped on the inner side of the top port of the to-be-heated tank body 7, thereby avoiding the contact between the person drinking the hot drink in the to-be-heated tank body 7 and the tank body itself, achieving the function of preventing scalding, and at the same time, the to-be-heated tank body 7 is limited downward, thereby preventing the to-be-heated tank body 7 from moving axially.

[0045] Embodiment 3

[0046] As shown in Figure 1 , Figures 4-11As shown, the present embodiment provides a self-heating device, which comprises an upper cup body 1, a lower cup body 2, a piercing assembly 3, a cover 4, a water bag 5 and a self-heating bag 6. The piercing assembly 3 is installed on the lower cup body 2, the water bag 5 and the self-heating bag 6 are arranged in the lower cup body 2, and the self-heating bag 6 is located below the water bag 5 and the piercing assembly 3. The lower cup body 2 has an arrangement 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 loading the water bag 5 and the self-heating bag 6.

[0047] The water bag 5 comprises a box body 51 and a liquid stored in the box body 51. The form of the box body 51 is basically similar to the existing eight-connected-cup yogurt box. 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 a hard sealing edge 52 extending outward, which is used for heat sealing and fixing the sealing film, so the thickness of the hard sealing edge 52 is greater than the thickness of the box body 51.

[0048] In order to facilitate the installation of the water bag 5, two guide structures extending upward and downward and arranged at intervals are arranged in the lower cup body 2. The guide structure comprises a guide groove for the hard sealing edge 52 of the water bag 5 to extend into. In combination with Figure 5 、 Figure 6 、 Figure 7 As shown, each guide structure comprises two guide protrusions protruding on the inner wall of the lower cup body 2, which are a first guide protrusion 21 and a second guide protrusion 22. The two guide protrusions and the inner wall of the lower cup body 2 together form the above-mentioned guide groove. The openings 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 grooves, which can guide the loading of the water bag 5. After being installed in place, the groove wall of the guide groove is in stop cooperation with the hard sealing edge 52, so as to clamp and fix the water bag 5 in the lower cup body 2, which can prevent horizontal movement.

[0049] The guide groove is formed by protruding the guide protrusion on the inner wall of the lower cup body 2, so that there is enough space between the two guide grooves. Therefore, under the premise of meeting the installation requirements of the piercing assembly 3, the space in the lower cup body 2 is fully utilized to arrange the water bag 5, so as to ensure that the water bag 5 has a certain volume, thereby ensuring that the amount of liquid is sufficient and the heat release reaction is sufficient.

[0050] Since the water bag 5 is located above the self-heating bag 6, the lower ends of the two guide protrusions in each guide structure are connected through 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 hard sealing edge 52 of the water bag 5. The two side support surfaces are at the same height, which limits the limit position of the downward installation of the water bag 5. The distance between the support surface and the bottom wall of the lower cup body 2 is a set distance, which is not less than the height of the self-heating bag 6, so as to meet the arrangement of the self-heating bag 6 and avoid the hard sealing edge 52 of the water bag 5 pressing on the self-heating bag 6.

[0051] The lower cup body 2 is provided with a mounting port 26 for mounting the piercing assembly 3, the spacing between the two guide structures corresponds to the mounting port 26, so that after the water bag 5 is mounted in place, the sealing film of the water bag 5 is opposite to the piercing assembly 3, thereby facilitating the piercing assembly 3 to pierce the sealing film 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 installation and after installation, a limiting protruding strip 24 for contacting and limiting the outer side wall of the box bottom of the box body 51 is protruded on the inner wall of the lower cup body 2 at a position opposite to the mounting port 26, and the limiting protruding strip 24 is arranged in parallel with two parallel limiting protruding strips.

[0052] When the water bag 5 is installed, in order to facilitate the hard sealing edge 52 of the water bag 5 to enter the guide groove, the upper end of each guide protruding strip extends to the upper end surface of the lower cup body 2, facilitating the hard sealing edge 52 to align with the guide groove. Meanwhile, in the two guide protruding strips of each guide structure, the guide protruding strip close to the mounting port 26, i.e. the first guide protruding strip 21, includes an upper inclined extension section 211 and a lower vertical extension section 212, while the upper portion 221 and the lower portion 222 of the second guide protruding strip 22 are vertically extended, so that the guide groove includes an upper gradually changing groove width section (formed by the inclined extension section 211 and the upper portion 221) and a lower equal groove width section (formed by the vertical extension section 212 and the lower portion 222), the groove width of the gradually changing groove width section gradually decreases from top to bottom, forming a structure similar to a horn mouth, which can guide the hard sealing edge 52. In addition, although the upper end of the limiting protruding strip 24 does not extend to the upper end surface of the lower cup body 2, the upper part of each limiting protruding strip 24 is provided with a guide inclined surface for guiding the water bag 5 to be installed, that is, the height of the limiting protruding strip 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, and the height of the lower part is uniform.

[0053] As shown in Figure 1 The lower cup body 2 has a containing space for containing the to-be-heated can body 7, the containing space is located above the above-mentioned arrangement space, that is, the to-be-heated can body 7 is located above the water bag 5, and the to-be-heated can body 7 can be a pop can containing beverage or rice pudding and the like. In order to support the to-be-heated can body 7, as shown in Figures 2-5 The inner wall of the lower cup body 2 is further provided with four circumferentially distributed support limiting protruding ribs 25, the mounting port 26 is located between two adjacent support limiting protruding ribs 25, the limiting protruding strip 24 is located between the other two adjacent support limiting protruding ribs 25, and each guide structure is located between two adjacent support limiting protruding ribs 25, and the distance between the two guide structures is less than the inner diameter of the lower cup body 2, so as to ensure that the water bag 5 can better cooperate with the piercing assembly 3, and the inner wall of the lower cup body 2 is fully utilized, and the overall structure is reasonable and compact.

[0054] The lower end of each support and limiting protrusion 25 extends to the bottom wall of the lower cup body 2, and when the self-heating bag 6 is installed, it can be directly installed in contact with the bottom wall of the lower cup body 2 and clamped by the lower part of each support and limiting protrusion 25, each support protrusion 23 and each limiting protrusion 24, thereby avoiding the self-heating bag 6 from moving. The upper end of each support and limiting protrusion 25 includes a bottom supporting surface 251 for supporting the bottom of the to-be-heated tank body 7 and a side limiting surface 252 for limiting the side of the to-be-heated tank body 7, so as to achieve both supporting and limiting the to-be-heated tank body 7 from moving horizontally.

[0055] The upper end of each support and limiting protrusion 25 extends to the middle of the lower cup body 2, so that when the water bag 5 is torn, the liquid flowing downward onto the self-heating bag 6 will generate heat, which can flow upward through the gap between the adjacent two support and limiting protrusions 25, and the annular space between the to-be-heated tank body 7 and the inner wall of the lower cup body 2 can also flow hot air, thereby heating the outer circumferential surface of the to-be-heated tank body 7 and improving the heating effect.

[0056] The inclined extension section 211 and the upper part 221 are located in the containing space, and the vertical extension section 212 and the lower part 222 are located in the arrangement space. The height of the inclined extension section 211 and the upper part 221 protruding from the inner wall of the lower cup body 2 is less than the height of the vertical extension section 212 and the lower part 222 protruding from the inner wall of the lower cup body 2. Of course, the height of the vertical extension section 212 and the lower part 222 protruding from the inner wall of the lower cup body 2, the height of the limiting protrusion 24 protruding from the inner wall of the lower cup body 2, and the height of the support and limiting protrusion 25 protruding from the inner wall of the lower cup body 2 are all less than the height of the support and limiting protrusion 25 protruding from the inner wall of the lower cup body 2, so as to avoid the to-be-heated tank body 7 being clamped between other protrusions when the to-be-heated tank body 7 is installed. In this embodiment, the height of the inclined extension section 211 and the upper part 221 protruding from the inner wall of the lower cup body 2 is smaller, so that the distance between the inclined extension section 211 and the upper part 221 and the outer wall of the to-be-heated tank body 7 is larger, which can reduce the resistance of the hot air flowing in the annular space and facilitate the smooth flow of the hot air. Similarly, the guide inclined surface on the limiting protrusion 24 extends from top to bottom to the middle of the limiting protrusion 24, which also has the same effect. The lower end of the guide inclined surface, the upper end of the support and limiting protrusion 25, and the lower end of the inclined extension section 211 and the upper part 221 are substantially at the same height.

[0057] It should be noted that each of the above guide protrusions, support protrusions 23, support and limiting protrusions 25, and limiting protrusions 24 can be integrally formed with the lower cup body 2, or can be separately manufactured and then fixed to the inner wall of the lower cup body 2 by bonding or clamping.

[0058] As Figure 4As 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 8 , Figure 9 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.

[0059] 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.

[0060] 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.

[0061] 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 comprises a piercing cylinder 321 with an opening at one end and a cylinder cover 322 at the other end, i.e. the main body of the piercing body 32 is in a cylindrical structure, and the piercing cylinder 321 is a cylindrical cylinder. The entire cylinder cover 322 constitutes a pressing end, and the size of the cylinder cover 322 is larger than that of the piercing cylinder 321, which not only seals one end of the piercing cylinder 321, but also has an extra edge part. The overall shape of the cylinder cover 322 is oval, which is suitable for the shape of the human finger, not only beautiful, but also can increase the stress area.

[0062] The opening end of the piercing cylinder 321 constitutes a cylindrical piercing end, which is provided with a plurality of piercing teeth 325 extending away from the pressing end and used for piercing the sealing film of the water bag 5. Each piercing tooth 325 is arranged continuously 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 triangular as a whole, and has thin blades on both sides from the tooth tip to the tooth root for conveniently tearing the sealing film.

[0063] The tooth roots of any two adjacent piercing teeth 325 are connected, so that when the pressing end of the piercing body 32 is stressed, the entire piercing body 32 moves towards the water bag 5, and the tooth tips of the piercing teeth 325 first contact and tear the sealing film of the water bag 5. Since there is a gap between the tooth tips of the piercing teeth 325, the sealing film is torn at multiple points at this time. With the continuous movement of the piercing body 32, the tooth roots of the piercing teeth 325 gradually contact the sealing film, and the hole in the sealing film gradually increases during this process, and finally the local material of the sealing film will be completely cut off to form an opening with the same size as the cylindrical piercing end. The local material of the cut sealing film can enter the inner cavity of the cylindrical piercing end. When the piercing body 32 retreats, the liquid in the water bag 5 can flow smoothly outward through the opening and will not block the opening. And the two abutting legs 317 on the mounting cylinder 31 are arranged horizontally and spaced apart, and the space between them is through from top to bottom, so that the liquid in the water bag 5 can flow smoothly downward and flow onto the self-heating bag 6 to fully generate a heat release reaction, ensuring the heat release reaction effect of the self-heating bag 6.

[0064] The edge of the barrel cover 322 is provided with a stop edge 323 for stop cooperation with the inner flange 313 of the barrel mouth of the mounting barrel 31. When the piercing body 32 is mounted, the spring 33 is first sleeved on the outside of the piercing barrel 321, and then the piercing end of the piercing body 32 is mounted into the barrel body 311 of the mounting barrel 31 inwards until the stop edge 323 abuts against the inner flange 313 of the barrel mouth. The piercing body 32 is pressed to make the stop edge 323 deform and pass over the inner flange 313 of the barrel mouth. Since one end of the spring 33 abuts against the barrel cover 322 and the other end abuts against the baffle 314 of the mounting barrel 31, the stop edge 323 is in stop cooperation with the inner flange 313 of the barrel mouth under the reaction force of the spring 33, so that the piercing body 32 cannot be pulled out of the mounting barrel 31. In order to facilitate the deformation of the stop edge 323 when being mounted, a plurality of deformation grooves 324 are uniformly arranged on the stop edge 323 to facilitate the elastic deformation of the stop edge 323 to pass over the inner flange 313 of the barrel mouth.

[0065] During the mounting of the piercing body 32, each piercing tooth 325 passes through the through port 318 on the baffle 314 and is mounted in place. Without pressing the piercing body 32, each piercing tooth 325 does not protrude from the end surface of the two abutting legs 317, so that only the piercing body 32 can be torn when it is pressed. The through port 318 is a circular hole, and the size is matched with the outer diameter of the piercing barrel 321 to guide the piercing body 32 during movement. Meanwhile, the inner cavity of the barrel body 311 is an elliptical cavity, and the size of the inner cavity is matched with the outer contour size of the stop edge 323 to guide the piercing body 32 during movement.

[0066] In addition, in order to prevent the hot gas from flowing into the mounting barrel 31 through the gap between the piercing barrel 321 and the through port 318 when the self-heating bag 6 has a heat release reaction, and then flowing outwards through the gap between the stop edge 323 and the inner flange 313 of the barrel mouth, or directly flowing outwards through the gap between the mounting barrel 31 and the mounting port 26 of the lower cup body 2, and further causing harm to people, a sealing ring can be mounted on the inner wall of the through port 318 to seal with the outer circumferential surface of the piercing barrel 321. Meanwhile, a sealing ring can be arranged between the outer flange 315 of the barrel 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 mounting barrel 31 and the mounting port 26 and avoid the leakage of hot gas.

[0067] In other embodiments of the self-heating device: the mounting barrel 31 of the piercing assembly 3 can not have a contact end surface in contact with the sealing film of the water bag 5, and there is a certain distance between the end surface of the mounting barrel 31 and the sealing film of the water bag 5. In order to avoid the sealing film being torn accidentally, the tip of the piercing body 32 is preferably not protruded from the end surface of the mounting barrel 31.

[0068] In other embodiments of the self-heating device: the upper part of the limiting protrusions 24 can not be provided with a guide slope, the height of the limiting protrusions 24 protruding from the inner wall of the lower cup body 2 is uniform from top to bottom, and of course cannot be greater than the height of the supporting limiting protrusions 25 protruding from the inner wall of the lower cup body 2, so as to avoid affecting the installation of the to-be-heated tank body 7.

[0069] In other embodiments of the self-heating device: according to the size of the box bottom area of the water bag 5 box body, the limiting protrusions 24 can also be provided with three or more; of course, the limiting protrusions 24 can also be provided with only one, at this time, the width of the limiting protrusions 24 can be appropriately widened to increase the contact area with the box bottom.

[0070] In other embodiments of the self-heating device: the inner wall of the lower cup body 2 can no longer be provided with limiting protrusions 24, and the position of the water bag 5 is limited only by the blocking relationship between the two guide grooves and the hard sealing edge 52 of the water bag 5.

[0071] In other embodiments of the self-heating device: the height of the guide protrusions protruding from the inner wall of the lower cup body 2 is uniform from top to bottom, and is only required to be less than the height of the supporting limiting protrusions 25 protruding, so as to avoid affecting the installation of the to-be-heated tank body 7.

[0072] In other embodiments of the self-heating device: the lower cup body 2 can not have a containing space for containing the to-be-heated tank body 7, and the to-be-heated tank body 7 is arranged in the upper cup body, and the upper cup body 2 is provided with a structure for limiting the to-be-heated tank body 7, at this time, the inner wall of the lower cup body 2 does not need to be provided with the supporting limiting protrusions 25, and the lower cup body 2 can be made lower, and the height of the guide protrusions protruding from the inner wall of the lower cup body 2 and the height of the limiting protrusions protruding from the inner wall of the lower cup body can be set according to actual needs, without considering the height of the supporting limiting protrusions 25.

[0073] In other embodiments of the self-heating device: the upper end of each guide protrusion and the upper end surface of the lower cup body 2 are at a certain distance, at this time, the water bag 5 needs to be inserted into the cup body by a certain amount, so as to correspond to the guide groove.

[0074] In other embodiments of the self-heating device: the two guide protrusions in each guide structure can each include an inclined extension segment 211 and a vertical extension segment 212, and the inclined extension segments 211 of the two guide protrusions are arranged in a V shape, and the slot width of the gradually changing slot width segment formed is still gradually reduced from top to bottom.

[0075] In other embodiments of the self-heating device: the two guide protrusions in each guide structure can both be vertically extended, at this time, the slot width of the guide groove is uniform from top to bottom.

[0076] In other embodiments of the self-heating device: the self-heating pack 6 can be arranged on the lateral side of the water pack 5, after the water pack is pierced, the liquid flows in the horizontal plane and flows onto the self-heating pack, realizing the exothermic reaction, at this time, the support protrusions do not need to be arranged at the lower ends of the guide protrusions, the lower ends of the guide protrusions can directly extend to the bottom wall of the lower cup body.

[0077] In other embodiments of the self-heating device: each guide structure can only include one guide protrusion protruding on the inner wall of the lower cup body 2, the guide protrusion itself includes a guide groove, which is a U-shaped groove extending upward and downward; of course, in other embodiments, when the guide protrusion itself is provided with the guide groove, the guide protrusion can not be protruding on the inner wall of the lower cup body, but can have a spacing with the inner wall of the lower cup body, at this time, the guide protrusion can be regarded as an independently arranged guide rail, and the bottom end of the guide rail can be fixed on the bottom wall of the lower cup body.

[0078] The above-mentioned embodiments are only preferred embodiments of the present application, and are not intended to limit the scope of the present application. Therefore, equivalent changes or modifications made in accordance with the structure, features and principles described in the patent range of the present application should be included in the patent range of the present application.

Claims

1. A cup for a self-heating device, characterized in that The self-heating device comprises an upper cup body (1) and a lower cup body (2), the upper cup body (1) is located at the upper end of the lower cup body (2) and detachably connected with the lower cup body (2), the upper cup body (1) and the lower cup body (2) both have a containing space for containing a to-be-heated tank body (7), a plurality of limiting protrusions (132) are circumferentially arranged on the inner side wall of the upper cup body (1), the limiting protrusions (132) are in contact with the outer side of the to-be-heated tank body (7), and the upper cup body (1) comprises a limiting structure and is used for preventing axial movement of the to-be-heated tank body (7).

2. A cup for a self-heating device according to claim 1, characterised in that The limiting structure comprises a circular truncated cone-shaped limiting section (12), and the limiting section (12) is in contact with the tapered surface at the upper end of the to-be-heated tank body (7).

3. A cup for a self-heating device according to claim 1, characterised in that The limiting structure comprises a cover fixed at the upper end of the upper cup body (1), and the lower end surface of the cover is in contact with the upper end surface of the to-be-heated tank body (7).

4. A cup for a self-heating device according to claim 3, characterised in that A through opening is formed in the cover, and an annular flange (112) is fixed at the through opening of the cover, the flange (112) extends downward and into the to-be-heated tank body (7).

5. A cup for a self-heating device according to claim 1, characterised in that An exhaust hole (131) is arranged on the upper cup body (1).

6. A cup for a self-heating device according to claim 1, characterised in that The upper end of the lower cup body (2) extends into the upper cup body (1) and is threadedly connected with the upper cup body (1).

7. A self-heating device characterised in that The self-heating device comprises the upper cup body (1) and the lower cup body (2) according to any one of claims 1-6, the lower cup body (2) has a arranging space for arranging a water bag (5) and a self-heating bag (6), the arranging space is located below the containing space, the upper end of the lower cup body (2) has an opening for loading the water bag (5) and the self-heating bag (6), and the lower cup body (2) is provided with two guide structures extending upward and downward and arranged at intervals; The guide structure comprises a guide groove into which a hard sealing edge (52) of the water bag (5) extends, the guide groove is used for guiding the water bag (5) during loading and limiting the horizontal position of the water bag (5) after the water bag (5) is loaded in place; The self-heating device further comprises a piercing assembly (3), the lower cup body (2) is provided with a mounting opening (26) for mounting the piercing assembly (3), and the mounting opening (26) corresponds to the interval between the two guide structures, so that the piercing assembly (3) can pierce the sealing film of the water bag (5).

8. The self-heating package of claim 7, wherein the heating element comprises a plurality of heating elements. Each guide structure comprises two guide protrusions protruding on the inner wall of the lower cup body (2), and the two guide protrusions and the inner wall of the lower cup body (2) jointly form the guide groove; The lower ends of the two guide protrusions in each guide structure are connected through a support protrusion (23), the top surface of the support protrusion (23) is located between the two guide protrusions and forms a support surface for supporting the hard sealing edge (52) of the water bag (5), and the support surface has a set distance to the bottom wall of the lower cup body (2), so that the water bag (5) is arranged above the self-heating bag (6).

9. The self-heating package of claim 7, wherein the heating element comprises a plurality of heating elements. The inner wall of the lower cup body (2) is protruded with a limiting protrusion (24) at a position opposite to the mounting opening (26) and used for limiting contact with the outer side wall of the box body (51) of the water bag (5).

10. The self-heating package of claim 7, wherein the heating element comprises a plurality of heating elements. The piercing assembly (3) comprises a mounting cylinder (31) mounted on the lower cup (2), a piercing body (32) slidingly assembled in the mounting cylinder (31) and a spring (33) arranged between the piercing body (32) and the mounting cylinder (31), the mounting cylinder (31) having a contact end surface for contacting the sealing film of the water bag (5), the piercing body (32) not protruding beyond the contact end surface when not pressed.

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