CN211933697U - Electric heating lunch box - Google Patents
Electric heating lunch box Download PDFInfo
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- CN211933697U CN211933697U CN202020139919.XU CN202020139919U CN211933697U CN 211933697 U CN211933697 U CN 211933697U CN 202020139919 U CN202020139919 U CN 202020139919U CN 211933697 U CN211933697 U CN 211933697U
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Abstract
The utility model provides an electric heating lunch box, which belongs to the technical field of lunch boxes. It has solved current electric heat lunch-box and has had the structure complicacy, the assembly is comparatively troublesome, and the leakproofness is relatively poor between the casing moreover, can have when leading to the use and leak in the inside electric elements of casing, causes the problem of the phenomenon of electric elements damage. The utility model comprises a lunch box main body, a main body inner seat and a PTC heating device; the lunch box main body is provided with a control key, a mounting seat for mounting an inner seat of the main body, a heat dissipation hole and a power socket; the main body inner seat is provided with a mounting column matched with the mounting seat, an inserting shaft matched with the PTC heating device and a heating opening arranged in the main body inner seat; the PTC heating device is provided with a socket matched with the inserting shaft and a heat-resistant gasket arranged between the PTC heating device and the main body inner seat; a sealing ring for sealing is arranged between the lunch box main body and the edge of the upper end of the main body inner seat, and the section of the sealing ring is L-shaped. The utility model has the advantages of convenient installation and good sealing performance.
Description
Technical Field
The utility model belongs to the technical field of the lunch-box, concretely relates to electric heat lunch-box.
Background
The electric heating lunch box is a small household appliance which achieves the purpose of heating and heat preservation by generating high-temperature steam inside the lunch box after the heating body is electrified, but the existing electric heating lunch box has the defects of complex structure, troublesome assembly and poor sealing property between shells, and can cause the phenomenon of damage of electric elements due to water leakage into the electric elements inside the shells when in use.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an electric heating lunch box with convenient installation and good sealing performance aiming at the problems in the prior art.
In order to realize the purpose of the utility model, the utility model adopts the following technical scheme: an electric heating lunch box comprises a lunch box main body, a main body inner seat and a PTC heating device; the lunch box main body is provided with a control button for controlling the PTC heating device, a mounting seat for mounting an inner seat of the main body, a heat dissipation hole arranged at the bottom of the lunch box main body and a power socket; the main body inner seat is provided with a mounting column matched with the mounting seat, an inserting shaft matched with the PTC heating device and a heating opening arranged on the main body inner seat; the PTC heating device is provided with a socket matched with the inserting shaft and a heat-resistant gasket arranged between the PTC heating device and the main body inner seat; the lunch box is characterized in that a sealing ring for sealing is arranged between the lunch box main body and the upper end edge of the main body inner seat, and the section of the sealing ring is L-shaped. When the lunch box is installed, the heat-resistant gasket is installed on the PTC heating device, then the socket of the assembled PTC heating device is inserted into the inserting shaft of the main body inner seat in an aligning way, the inserting shaft is in interference fit with the socket, and meanwhile, the heat-resistant gasket can be extruded to enable the heat-resistant gasket to be tightly attached to the PTC heating device and the main body inner seat, the heat-resistant gasket can adopt silica gel to enable the sealing property between the PTC heating device and the main body inner seat to be good and prevent water leakage, and the silica gel can resist high temperature, then the sealing ring is sleeved at the outer ring at the back of the main body inner seat, the size of the sealing ring is slightly smaller than that of the main body inner seat, therefore, the sealing ring can be firmly fixed on the main body inner seat, after the lunch box main body and the main body inner seat are assembled, the mounting column is inserted into the mounting seat and is in interference fit with the mounting column, then the L-shaped sealing ring is, the L-shaped sealing ring can increase the contact area and enhance the sealing effect, and has convenient installation, simple structure and good sealing property; when the lunch box is used, a common lunch box needing to be heated is placed on the main body inner seat, a proper amount of clear water is poured into the lunch box, then the cover is covered, the power supply is plugged, the PTC heating device is opened by using the control key, and the operation is simple. Wherein the PTC heating device is assembled by the prior PTC heating sheet.
Further, main part inner seat upper end edge still have an installation flange, just installation flange on be equipped with the mounting groove, the lunch-box main part on be equipped with installation flange complex step and with mounting groove complex chimb. When the main body inner seat is installed on the lunch box main body, the installation flange can extrude the sealing ring, so that the sealing ring is deformed and pressed into the installation groove, and then the convex edge tightly presses the sealing ring, so that the sealing effect between the lunch box main body and the main body inner seat is better.
Furthermore, the heat-resistant gasket is provided with a plurality of sealing bulges arranged at the bottom of the heat-resistant gasket and a sealing convex ring arranged at the top of the heat-resistant gasket, and the main body inner seat is provided with a sealing groove matched with the sealing convex ring. The PTC heating sheet of the PTC heating device can be provided with a groove matched with the sealing protrusion, then the sealing protrusion is fixed in the groove through heat-resistant glue, the sealing convex ring is inserted into the sealing groove, and the sealing convex ring is in interference fit with the sealing groove, so that the sealing effect of the main body inner seat and the PTC heating device is better.
Furthermore, the mounting base have with the jack of erection column complex, along the strengthening rib of the even setting of mounting base circumferencial direction and protrusion in the footing of lunch-box main part. In the jack was inserted to the erection column, jack and erection column interference fit, the strengthening rib can increase the intensity of mount pad simultaneously for the mount pad is not fragile, and the footing can make things convenient for placing of lunch-box main part simultaneously.
Furthermore, the erection column on be equipped with along the even enhancement piece that sets up of erection column circumferencial direction, just the enhancement piece still have with strengthening rib complex location socket. The reinforcing sheet not only can increase the intensity of erection column, can also realize the locate function through in the strengthening rib inserts the location jack.
Further, the main body inner seat is further provided with a supporting seat fixedly connected with the inserting shaft, the supporting seat protrudes out of the bottom surface of the upper surface of the main body inner seat, and the supporting seat is uniformly arranged along the circumferential direction of the heating opening. This supporting seat not only can increase the length of inserting the axle, reduce the distance between seat and the lunch-box main part in the main part, and can be used for placing the object that needs the heating, it has the removal clearance to make its bottom and main part inner seat upper surface, the bottom surface of object just can be relieved to water like this, greatly increased the area of contact of water with the object, it is better to make the heating effect, because seat and lunch-box main part are the environmental protection plastics that coefficient of heat conductivity is not high usually in the main part, thereby only can heat the heating of realization to the object through the partial PTC heating device that exposes in the heating opening to water.
Furthermore, the PTC heating device is also provided with a sliding slot hole for installing a socket, and the socket is provided with a concave edge matched with the sliding slot hole and a flexible fixing ring matched with the insertion shaft. The socket passes through the spout hole and installs on PTC heating device, and the socket passes through chimb and spout hole sliding fit, and this flexible retainer plate can be rubber or silica gel and make, and the flexible retainer plate links firmly in the socket, and this setting can increase the cooperation intensity of inserting axle and socket for the fixed more firm between inserting axle and socket.
Furthermore, the lunch box main body still has the dust cover that sets up in the louvre top, just the dust cover have with the opening of louvre intercommunication, the opening set up in the side of dust cover. The dust cover not only can make the dust be difficult to enter into the cavity between lunch-box main part and the main part inner base, causes inside accumulation dust, can increase the intensity of lunch-box main part bottom moreover.
Furthermore, the lunch box main body and the main body inner seat are formed by integral molding. The lunch box main part and the main part inner base are formed by injection molding of a PP material, can be processed and produced in a large scale, greatly reduces the production cost, ensures the precision of the lunch box main part and the main part inner base, and ensures the sealing performance after assembly between the lunch box main part and the main part inner base.
Furthermore, the lower surface of the main body inner seat is also provided with a plurality of wire hooks for wiring. Can catch on the wire of cavity between lunch-box main part and the main part inner seat through the wire couple to fix easy operation through the area of bundling.
Compared with the prior art, the electric heating lunch box adopting the technical scheme has the following beneficial effects:
the utility model discloses an electric heat lunch-box has following advantage:
1: when the lunch box main body is matched with the main body inner seat, the heat-resistant gasket can be extruded, so that the heat-resistant gasket is tightly attached to the PTC heating device and the main body inner seat, the sealing performance between the PTC heating device and the main body inner seat is good, and water leakage is prevented;
2: when the lunch box main body is matched with the main body inner seat, the lunch box main body and the main body inner seat extrude the L-shaped sealing ring, so that the lunch box main body is in sealing fit with the upper end edge of the main body inner seat, the L-shaped sealing ring can increase the contact area and enhance the sealing effect, and the lunch box main body and the main body inner seat are convenient to install, simple in structure and good in sealing performance;
3: the lunch box main body and the main body inner seat are in inserted interference fit, and the lunch box is convenient to install.
Drawings
Fig. 1 is an exploded view of the present invention;
FIG. 2 is another angular schematic view of FIG. 1;
fig. 3 is a perspective view of the present invention;
fig. 4 is a bottom view of the present invention;
fig. 5 is an isometric cross-sectional schematic view of the present invention;
fig. 6 is a cross-sectional view of the present invention;
fig. 7 is an enlarged view of fig. 2.
In the figure, 1, a lunch box body; 2. a main body inner seat; 3. a PTC heating device; 11. a control key; 12. a mounting seat; 13. heat dissipation holes; 14. a power outlet; 21. mounting a column; 22. inserting a shaft; 23. heating the opening; 31. a socket; 32. a heat resistant gasket; 4. a seal ring; 24. installing a flange; 241. mounting grooves; 15. a step; 151. a convex edge; 321. sealing the protrusion; 322. a sealing convex ring; 25. sealing the groove; 121. a jack; 122. reinforcing ribs; 123. footing; 211. a reinforcing sheet; 124. positioning the socket; 26. a supporting seat; 33. a sliding slot hole; 311. a concave edge; 34. a flexible retainer ring; 16. a dust cover; 161. an opening; 27. and (6) a wire hook.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1-7, the electric heating lunch box comprises a lunch box main body 1, a main body inner seat 2 and a PTC heating device 3; the lunch box body 1 is provided with a control key 11 for controlling the PTC heating device 3, a mounting seat 12 for mounting the body inner seat 2, a heat dissipation hole 13 arranged at the bottom of the lunch box body 1 and a power socket 14; the main body inner seat 2 is provided with a mounting column 21 matched with the mounting seat 12, an inserting shaft 22 matched with the PTC heating device 3 and a heating opening 23 arranged on the main body inner seat 2; the PTC heating device 3 has a socket 31 fitted with the insertion shaft 22 and a heat-resistant gasket 32 provided between the PTC heating device 3 and the main body inner 2; still be equipped with between the upper end edge of seat 2 in lunch-box main part 1 and the main part and be used for sealed sealing washer 4, and sealing washer 4 cross-section is the L shape.
Preferably, the edge of the upper end of the main body inner seat 2 is further provided with an installation rib 24, the installation rib 24 is provided with an installation groove 241, and the lunch box main body 1 is provided with a step 15 matched with the installation rib 24 and a convex edge 151 matched with the installation groove 241. When the main body inner seat 2 is installed on the lunch box main body 1, the installation flange 24 can extrude the sealing ring 4, so that the sealing ring 4 is deformed and pressed into the installation groove 241, and then the flange 151 tightly presses the sealing ring 4, so that the sealing effect between the lunch box main body 1 and the main body inner seat 2 is better.
Preferably, the heat-resistant gasket 32 has a plurality of sealing protrusions 321 provided at the bottom of the heat-resistant gasket 32 and a sealing protrusion ring 322 provided at the top of the heat-resistant gasket 32, and the main body inner seat 2 is provided with a sealing groove 25 engaged with the sealing protrusion ring 322. The PTC heating sheet of the PTC heating device 3 may be provided with a groove matching with the sealing protrusion 321, then the sealing protrusion 321 is fixed in the groove by heat-resistant glue, the sealing convex ring 322 is inserted into the sealing groove 25, and the sealing convex ring 322 is in interference fit with the sealing groove 25, so that the sealing effect of the main body inner seat 2 and the PTC heating device 3 is better.
When the lunch box is installed, the heat-resistant gasket 32 is installed on the PTC heating device 3, then the socket 31 of the assembled PTC heating device 3 is inserted in alignment with the insertion shaft 22 of the main body inner seat 2, the insertion shaft 22 and the socket 31 are in interference fit, meanwhile, the heat-resistant gasket 32 is extruded, so that the heat-resistant gasket 32 is tightly attached to the PTC heating device 3 and the main body inner seat 2, the heat-resistant gasket 32 can adopt silica gel, so that the sealing performance between the PTC heating device 3 and the main body inner seat 2 is good, water leakage is prevented, and the silica gel can resist high temperature, then the sealing ring 4 is sleeved at the outer ring of the back of the main body inner seat 2, the size of the sealing ring 4 is slightly smaller than that of the outer ring of the main body inner seat 2, therefore, the sealing ring 4 can be firmly fixed on the main body inner seat 2, after the lunch box main body 1 and the main body inner seat 2 are assembled, the mounting column 21 is inserted into the mounting seat 12 in interference fit, then the mounting column 21 and, the edge of the upper end of the lunch box main body 1 and the edge of the upper end of the main body inner seat 2 are in sealing fit, the L-shaped sealing ring 4 can increase the contact area and enhance the sealing effect, and the lunch box is convenient to install, simple in structure and good in sealing performance; when the lunch box is used, a common lunch box needing to be heated is placed on the main body inner seat 2, a proper amount of clear water is poured into the lunch box, then the cover is covered, the power supply is plugged, the PTC heating device 3 is opened by using the control key 11 for heating, and the operation is simple. Wherein the PTC heating device 3 is assembled from existing PTC heating plates.
Specifically, the main body inner seat 2 further has a supporting seat 26 fixedly connected with the inserting shaft 22, the supporting seat 26 protrudes out of the bottom surface of the upper surface of the main body inner seat 2, and the supporting seat 26 is uniformly arranged along the circumferential direction of the heating opening 23. This supporting seat 26 not only can increase the length of inserting axle 22, reduce the distance between seat 2 and the lunch-box main part 1 in the main part, and can be used for placing the object that needs the heating, it has the removal clearance to make its bottom and seat 2 upper surface in the main part, the bottom surface of object just can be relieved to water like this, greatly increased the area of contact of water with the object, it is better to make the heating effect, because seat 2 and lunch-box main part 1 are made for the environmental protection plastics that coefficient of heat conductivity is not high usually in the main part, thereby only can heat the heating of realization to the object through the partial PTC heating device 3 that exposes in the heating opening 23.
Specifically, the mounting base 12 has an insertion hole 121 engaged with the mounting post 21, reinforcing ribs 122 uniformly arranged along the circumferential direction of the mounting base 12, and feet 123 protruding from the lunch box body 1. In the erection column 21 inserted jack 121, jack 121 and erection column 21 interference fit, strengthening rib 122 can increase the intensity of mount pad 12 simultaneously for mount pad 12 is not fragile, and footing 123 can make things convenient for placing of lunch-box main part 1 simultaneously.
Specifically, the mounting post 21 is provided with reinforcing pieces 211 uniformly arranged along the circumferential direction of the mounting post 21, and the reinforcing pieces 211 further have positioning insertion holes 124 matched with the reinforcing ribs 122. The reinforcing sheet 211 not only can increase the strength of the mounting post 21, but also can realize a positioning function by inserting the reinforcing rib 122 into the positioning insertion hole 121.
Specifically, the PTC heating device 3 further has a slide groove hole 33 for mounting the socket 31, and the socket 31 has a recessed edge 311 for fitting with the slide groove hole 33 and a flexible fixing ring 34 for fitting with the insertion shaft 22. Socket 31 is installed on PTC heating device 3 through slotted hole 33, and socket 31 passes through chimb 151 and slotted hole 33 sliding fit, and this flexible retainer plate 34 can be rubber or silica gel and make, and flexible retainer plate 34 links firmly in socket 31, and this setting can increase the cooperation intensity of plug axle 22 and socket 31 for the fixed more firm between plug axle 22 and socket 31.
Specifically, the lunch box body 1 further includes a dust cover 16 disposed above the heat radiation hole 13, the dust cover 16 includes an opening 161 communicating with the heat radiation hole 13, and the opening 161 is disposed on a side surface of the dust cover 16. The dust cover 16 not only can make the dust be difficult to enter into the cavity between the lunch box body 1 and the main body inner seat 2, cause inside accumulation dust, but also can increase the intensity of the bottom of the lunch box body 1.
Specifically, the lunch box body 1 and the body inner seat 2 are integrally formed. Lunch-box main part 1 and main part inner base 2 form through PP material injection moulding, can carry out mass production, greatly reduced manufacturing cost to guarantee lunch-box main part 1 and main part inner base 2's precision, guarantee the leakproofness after the assembly between the two.
Specifically, the lower surface of the main body inner seat 2 is further provided with a plurality of wire hooks 27 for routing. The wire of the cavity between the lunch box main body 1 and the main body inner seat 2 can be hooked through the wire hook 27 and fixed through the cable tie.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although the terms of the lunch box main body 1, the main body inner seat 2, the PTC heating device 3, the control button 11, the mounting seat 12, the heat dissipation hole 13, the power jack 14, the mounting post 21, the insertion shaft 22, the heating opening 23, the socket 31, the heat-resistant gasket 32, the sealing ring 4, the mounting flange 24, the mounting groove 241, the step 15, the flange 151, the sealing protrusion 321, the sealing flange 322, the sealing groove 25, the insertion hole 121, the reinforcing rib 122, the foot 123, the reinforcing piece 211, the positioning jack 124, the support seat 26, the slide groove hole 33, the recessed edge 311, the flexible fixing ring 34, the dust cover 16, the opening 161, the wire hook 27, and the like are used more frequently herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
Claims (10)
1. An electric heating lunch box is characterized by comprising a lunch box main body (1), a main body inner seat (2) and a PTC heating device (3); the lunch box body (1) is provided with a control key (11) for controlling the PTC heating device (3), a mounting seat (12) for mounting the body inner seat (2), a heat dissipation hole (13) arranged at the bottom of the lunch box body (1) and a power socket (14); the main body inner seat (2) is provided with a mounting column (21) matched with the mounting seat (12), an inserting shaft (22) matched with the PTC heating device (3) and a heating opening (23) arranged on the main body inner seat (2); the PTC heating device (3) is provided with a socket (31) matched with the inserting shaft (22) and a heat-resistant gasket (32) arranged between the PTC heating device (3) and the main body inner seat (2); the lunch box is characterized in that a sealing ring (4) used for sealing is further arranged between the lunch box body (1) and the upper end edge of the main body inner seat (2), and the section of the sealing ring (4) is L-shaped.
2. An electric heating lunch box according to claim 1, characterized in that the edge of the upper end of the main body inner seat (2) is further provided with an installation rib (24), the installation rib (24) is provided with an installation groove (241), and the lunch box main body (1) is provided with a step (15) matched with the installation rib (24) and a convex edge (151) matched with the installation groove (241).
3. An electrothermal canteen according to claim 1, wherein the heat-resistant gasket (32) has a plurality of sealing protrusions (321) provided on the bottom of the heat-resistant gasket (32) and a sealing protrusion ring (322) provided on the top of the heat-resistant gasket (32), and the body inner seat (2) is provided with a sealing groove (25) engaged with the sealing protrusion ring (322).
4. An electrothermal canteen according to claim 1, wherein the mounting base (12) has insertion holes (121) for engaging with the mounting posts (21), reinforcing ribs (122) uniformly arranged along the circumferential direction of the mounting base (12), and feet (123) projecting from the canteen body (1).
5. An electrothermal canteen according to claim 4, wherein the mounting post (21) is provided with reinforcing pieces (211) uniformly arranged along the circumferential direction of the mounting post (21), and the reinforcing pieces (211) are further provided with positioning insertion holes (124) engaged with the reinforcing ribs (122).
6. The electric heating lunch box according to claim 1, wherein the main body inner seat (2) further comprises a support seat (26) fixedly connected with the insertion shaft (22), the support seat (26) protrudes from the bottom surface of the upper surface of the main body inner seat (2), and the support seats (26) are uniformly arranged along the circumferential direction of the heating opening (23).
7. An electrically heated lunch box according to claim 1, characterised in that the PTC heating device (3) further has slide slot holes (33) for mounting the sockets (31), and that the sockets (31) have recesses (311) for cooperation with the slide slot holes (33) and flexible fixing rings (34) for cooperation with the spigots (22).
8. An electric heating lunch box according to claim 1, characterized in that the box body (1) further has a dust cover (16) disposed above the heat dissipating holes (13), and the dust cover (16) has openings (161) communicating with the heat dissipating holes (13), the openings (161) being disposed on the side surfaces of the dust cover (16).
9. The electric heating lunch box according to claim 1, characterized in that the lunch box body (1) and the body inner seat (2) are formed by integral molding.
10. An electric heating lunch box according to any one of claims 1-9, characterized in that the lower surface of the main body inner seat (2) is further provided with a plurality of wire hooks (27) for wiring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020139919.XU CN211933697U (en) | 2020-01-21 | 2020-01-21 | Electric heating lunch box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020139919.XU CN211933697U (en) | 2020-01-21 | 2020-01-21 | Electric heating lunch box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211933697U true CN211933697U (en) | 2020-11-17 |
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ID=73174781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020139919.XU Active CN211933697U (en) | 2020-01-21 | 2020-01-21 | Electric heating lunch box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211933697U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112401669A (en) * | 2020-11-26 | 2021-02-26 | 珠海格力电器股份有限公司 | Lunch box |
-
2020
- 2020-01-21 CN CN202020139919.XU patent/CN211933697U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112401669A (en) * | 2020-11-26 | 2021-02-26 | 珠海格力电器股份有限公司 | Lunch box |
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