Anti-aging pp meal box
By introducing adjustment and heating mechanisms into the PP lunch box, the problems of limited functionality and fixed space in the lunch box are solved, enabling flexible space adjustment and temperature control, thus improving the practicality and safety of the lunch box.
Patent Information
- Application Number
- CN202421243417.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-06-03
AI Technical Summary
Existing PP material lunch boxes are not fully functional, cannot be heated, and have a fixed internal space that cannot be adjusted according to needs.
An aging-resistant PP lunch box was designed, which includes an adjustment mechanism and a heating mechanism. The internal space can be adjusted by sliding partitions, and it is equipped with electric heating wire, temperature sensor and display. It combines stainless steel insulation layer and polystyrene foam insulation layer to maintain temperature stability.
It enables flexible adjustment of the internal space of the lunch box and effective maintenance of food temperature, prevents food from mixing, and improves safety and ease of use.
Smart Images

Figure CN222303286U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of PP lunch boxes, in particular to an aging-resistant PP lunch box. Background Art
[0002] PP is made of polypropylene, which is a non-toxic, odorless, milky white, highly crystalline polymer with a density of only 0.90-0.91 g / cm3, making it one of the lightest plastics. It is particularly stable to water, with a water absorption rate of only 0.01% and a molecular weight of about 80,000 to 150,000. It has good formability, but due to its large shrinkage rate (1% to 2.5%), thick-walled products are prone to dents, and it is difficult to meet the requirements for some parts with high dimensional accuracy. The surface of the product has a good gloss.
[0003] The existing lunch boxes made of PP material are all disposable lunch boxes, which are not fully functional and do not have heating function. In addition, the internal storage space of most PP lunch boxes is fixed, which is not convenient to adjust according to the items placed. Therefore, those skilled in the art provide an aging-resistant PP lunch box to solve the problems raised in the above background technology. Utility Model Content
[0004] The purpose of the utility model is to provide an anti-aging PP lunch box to solve the problems raised in the above background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A kind of aging-resistant PP lunch box, comprising a PP lunch box, an adjustment mechanism and a heating mechanism, characterized in that a cover plate is movably connected to the upper end of the PP lunch box, a recessed groove is arranged on the upper surface of the cover plate, a pressure relief plate is arranged on the upper end of the recessed groove, the pressure relief plate is movably connected to the recessed groove, a pair of pressure relief rods are fixedly connected to the bottom end of the pressure relief plate, the pressure relief rods are sleeved and connected to the cover plate, a heating mechanism is arranged at the bottom end of the inside of the PP lunch box, and adjustment mechanisms are arranged on the inner side walls at both ends of the PP lunch box.
[0007] As a further solution of the utility model: the inner walls at both ends of the PP lunch box are provided with sliding grooves, sliding rods are provided in the sliding grooves, and multiple sliding sleeves are provided on the outer walls of the sliding rods. The sliding sleeves are slidably connected to the sliding rods, and partitions are fixedly connected between the sliding sleeves, and the partitions are movably connected to the PP lunch box.
[0008] As a further solution of the utility model: a bottom heat conduction plate is arranged at the bottom of the PP lunch box, the bottom heat conduction plate is made of aluminum alloy, a heating chamber is arranged at the bottom of the bottom heat conduction plate, an electric heating wire is arranged inside the heating chamber, a battery is arranged at the bottom of the heating chamber, and the battery is electrically connected to the electric heating wire.
[0009] As a further solution of the utility model: a temperature sensor is arranged on the inner wall at one end of the pp lunch box, a single-chip microcomputer is arranged on the outer wall at one end of the pp lunch box, a temperature display is arranged on the outer wall of one side of the pp lunch box, a USB interface is arranged at the bottom of the single-chip microcomputer, and the USB interface is electrically connected to the heating wire.
[0010] As a further solution of the utility model: a heat preservation layer is arranged at one end of the inner wall of the PP lunch box close to the partition, and a heat insulation layer is arranged at one end of the inner wall of the PP lunch box away from the partition. The heat preservation layer is made of stainless steel and the heat insulation layer is made of polystyrene foam.
[0011] As a further solution of the utility model: the single chip microcomputer is connected to the temperature display signal, and the single chip microcomputer is electrically connected to the temperature sensor.
[0012] Compared with the prior art, the utility model has the following beneficial effects: the utility model is provided with an adjusting mechanism, and the internal space of the lunch box can be reasonably divided according to one's own needs through sliding partitions, which is convenient for classifying and storing different kinds of ingredients or dishes. The partitions can be moved as needed, and the internal space of the lunch box can be reasonably utilized, making it more compact and efficient, saving storage space, and the movement of the partitions can effectively prevent different kinds of ingredients from mixing together, thereby maintaining the original flavor and quality of the food. Since a heating mechanism is provided, the electric heating wire can continuously generate heat through an external power supply or a battery to ensure that the temperature of the food inside the lunch box is maintained or increased, and the temperature sensor monitors the internal temperature of the lunch box in real time and transmits the data to the temperature display, so that the user can accurately understand the heating status of the food. The thermal insulation layer made of stainless steel and the thermal insulation layer made of polystyrene foam can effectively prevent heat conduction, maintain the internal temperature of the lunch box stable, and the outside will not overheat, thereby improving safety. The utility model relates to an aging-resistant PP lunch box, and the utility model is simple and reasonable in structure design, and is convenient and quick to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a structural diagram of an aging-resistant PP lunch box.
[0014] Figure 2 This is a schematic diagram of the internal structure of an aging-resistant PP lunch box.
[0015] Figure 3 It is a schematic diagram of the side cross-sectional structure of an aging-resistant PP lunch box.
[0016] Figure 4 This is a schematic diagram of the stacked structure of an aging-resistant PP lunch box.
[0017] In the figure: 1-pp lunch box, 2-cover, 3-sealing sleeve, 4-depression groove, 5-pressure relief plate, 6-pressure relief rod, 7-slide groove, 8-slide rod, 9-slide sleeve, 10-partition, 11-insulation layer, 12-insulation layer, 13-bottom heat conduction plate, 14-heating chamber, 15-heating wire, 16-battery, 17-single chip microcomputer, 18-temperature sensor, 19-USB interface, 20-temperature display. DETAILED DESCRIPTION
[0018] See also Figures 1 to 4 In the embodiment of the utility model, an aging-resistant PP lunch box includes a PP lunch box 1, a cover plate 2, a sealing sleeve 3, a recessed groove 4, a pressure relief plate 5, a pressure relief rod 6, a slide groove 7, a slide rod 8, a slide sleeve 9, a partition 10, a heat insulation layer 11, a heat preservation layer 12, a bottom heat conduction plate 13, a heating chamber 14, a heating wire 15, a battery 16, a single-chip computer 17, a temperature sensor 18, a USB interface 19, and a temperature display 20; the upper end of the PP lunch box 1 is movably connected with the cover plate 2, and the upper end surface of the cover plate 2 is provided with a recessed groove 4 A pressure relief plate 5 is provided at the upper end of the recessed groove 4, and the pressure relief plate 5 is movably connected to the recessed groove 4. A pair of pressure relief rods 6 are fixedly connected to the bottom end of the pressure relief plate 5, and the pressure relief rods 6 are sleeve-connected to the cover plate 2. A heating mechanism is provided at the bottom end of the interior of the pp lunch box 1, and adjustment mechanisms are provided on the inner side walls at both ends of the pp lunch box 1. The inner side walls at both ends of the pp lunch box 1 are both provided with slide grooves 7, and slide rods 8 are provided in the slide grooves 7. A plurality of sliding sleeves 9 are provided on the outer side walls of the slide rods 8, and the sliding sleeves 9 are all slidably connected to the slide rods 8, and the sliding sleeves 9 are fixedly connected to the sliding sleeves 9. The partition 10 is movably connected to the PP lunch box 1. The bottom of the PP lunch box 1 is provided with a bottom heat conducting plate 13, which is made of aluminum alloy. A heating chamber 14 is provided at the bottom of the bottom heat conducting plate 13. A heating wire 15 is provided inside the heating chamber 14. A battery 16 is provided at the bottom of the heating chamber 14. The battery 16 is electrically connected to the heating wire 15. A temperature sensor 18 is provided on the inner wall at one end of the PP lunch box 1. A single chip microcomputer 17 is provided on the outer wall at one end of the PP lunch box 1. A temperature display 20 is provided on the outer wall of one side, a USB interface 19 is provided at the bottom of the single-chip computer 17, and the USB interface 19 is electrically connected to the heating wire 15. A heat preservation layer 12 is provided at one end of the inner wall of the PP lunch box 1 close to the partition 10, and a heat insulation layer 11 is provided at one end of the inner wall of the PP lunch box 1 away from the partition 10. The heat preservation layer 12 is made of stainless steel, and the heat insulation layer 11 is made of polystyrene foam. The single-chip computer 17 is connected to the temperature display 20 by signal, and the single-chip computer 17 is electrically connected to the temperature sensor 18.
[0019] The working principle of the utility model is as follows: the inside of the PP lunch box 1 is cleaned before use, and after cleaning, the partition 10 is slid according to one's own needs. The partition 10 can be arbitrarily moved at the upper end of the travel of the slide rod 8 through the sliding sleeve 9 and the sliding cooperation of the slide rod 8, and the food can be placed in the PP lunch box 1 after moving; when it is necessary to heat the inside of the PP lunch box 1, an external power supply can be connected through the USB interface 19, and the heating wire 15 can also be powered by the battery 16 to make the heating wire 15 continue to heat, and a bottom heat conducting plate 13 is provided at the upper end of the heating wire 15, and the bottom heat conducting plate 13 is made of aluminum alloy, so that the inside of the PP lunch box 1 is not The PP lunch box 1 is continuously heated, and the temperature sensor 18 arranged in the PP lunch box 1 monitors the temperature in real time. The temperature sensor 18 transmits a signal to the single-chip microcomputer 17, and the single-chip microcomputer 17 transmits the signal to the upper end of the temperature display, and the temperature inside the PP lunch box 1 is displayed in real time on the upper end of the temperature display 20, so that the user can view the internal temperature. The inner wall of the PP lunch box 1 adopts a heat preservation layer 12 and a heat insulation layer 11, and the heat preservation layer 12 is made of stainless steel, and the heat insulation layer 11 is made of polystyrene foam. Stainless steel has good durability and heat preservation performance, is relatively easy to clean, and is not easy to produce odor. EPS foam has good insulation performance and can The utility model can effectively prevent heat conduction, keep the inside of the lunch box warm while holding the outside of the lunch box without scalding the user, and can also release the pressure inside the lunch box by pulling the pressure relief plate 5 to separate the pressure relief rod 6 from the lunch box cover 2. The utility model is provided with an adjustment mechanism, and the internal space of the lunch box can be reasonably divided according to its own needs by sliding the partition 10, which is convenient for classifying and storing different kinds of ingredients or dishes. The partition can be moved as needed, and the internal space of the lunch box can be reasonably utilized to make it more compact and efficient, saving storage space. The movement of the partition can effectively prevent different kinds of ingredients from mixing together, maintaining the original taste and quality of the food. The heating mechanism is powered by an external power supply or a battery, and the heating wire 15 can continuously generate heat to ensure that the temperature of the food inside the lunch box is maintained or increased. The temperature sensor 18 monitors the internal temperature of the lunch box in real time and transmits the data to the temperature display 20, so that the user can accurately understand the heating status of the food. The thermal insulation layer 12 made of stainless steel and the thermal insulation layer 11 made of polystyrene foam are used to effectively prevent heat conduction, maintain a stable internal temperature of the lunch box, and prevent overheating of the outside, thereby improving safety. The utility model relates to an anti-aging PP lunch box, which is simple and reasonable in structure design and convenient and quick to use.
[0020] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. An anti-aging PP lunch box, comprising a PP lunch box (1), an adjustment mechanism and a heating mechanism, characterized in that: The upper end of the PP lunch box (1) is movably connected with a cover plate (2), the upper end surface of the cover plate (2) is provided with a recessed groove (4), the upper end of the recessed groove (4) is provided with a pressure relief plate (5), the pressure relief plate (5) is movably connected to the recessed groove (4), the bottom end of the pressure relief plate (5) is fixedly connected with a pair of pressure relief rods (6), the pressure relief rods (6) are sleeve-connected to the cover plate (2), a heating mechanism is provided at the bottom end of the PP lunch box (1), and the inner side walls at both ends of the PP lunch box (1) are provided with adjustment mechanisms.
2. The anti-aging PP lunch box according to claim 1, characterized in that: The adjustment mechanism comprises a slide groove (7), a slide rod (8), a slide sleeve (9), and a partition (10); the inner side walls at both ends of the PP lunch box (1) are provided with slide grooves (7); a slide rod (8) is provided in the slide groove (7); a plurality of slide sleeves (9) are provided on the outer side walls of the slide rod (8); the slide sleeves (9) are slidably connected to the slide rod (8); partitions (10) are fixedly connected between the slide sleeves (9); and the partitions (10) are movably connected to the PP lunch box (1).
3. The anti-aging PP lunch box according to claim 1, characterized in that: The heating mechanism comprises a heat insulating layer (11), a heat preservation layer (12), a bottom heat conducting plate (13), a heating chamber (14), an electric heating wire (15), a storage battery (16), a single chip computer (17), a temperature sensor (18), a USB interface (19), and a temperature display (20). The bottom of the PP lunch box (1) is provided with a bottom heat conducting plate (13), the bottom heat conducting plate (13) is made of an aluminum alloy, a heating chamber (14) is provided at the bottom of the bottom heat conducting plate (13), an electric heating wire (15) is provided inside the heating chamber (14), a storage battery (16) is provided at the bottom of the heating chamber (14), and the storage battery (16) is electrically connected to the electric heating wire (15).
4. The anti-aging PP lunch box according to claim 3, characterized in that: The inner wall at one end of the PP lunch box (1) is provided with a temperature sensor (18), the outer wall at one end of the PP lunch box (1) is provided with a single-chip computer (17), the outer wall at one side of the PP lunch box (1) is provided with a temperature display (20), and the bottom end of the single-chip computer (17) is provided with a USB interface (19), and the USB interface (19) is electrically connected to the heating wire (15).
5. The anti-aging PP lunch box according to claim 4, characterized in that: An insulation layer (12) is provided at one end of the inner wall of the PP lunch box (1) close to the partition (10), and an insulation layer (11) is provided at one end of the inner wall of the PP lunch box (1) away from the partition (10). The insulation layer (12) is made of stainless steel, and the insulation layer (11) is made of polystyrene foam.
6. The anti-aging PP lunch box according to claim 4, characterized in that: The single chip computer (17) is signal-connected to the temperature display (20), and the single chip computer (17) is electrically connected to the temperature sensor (18).