Preservation box capable of prompting freshness of meat

Abstract

The utility model provides a preservation box capable of prompting the preservation degree of meat, which comprises a box body with an opening at the upper end and used for containing fresh products; a battery is arranged on the box body; a cover body is detachably connected above the box body; a conductive rod is arranged on the cover body, the conductive rod is made of a doped polyaniline material, the conductive rod is detachably connected to the side, facing the box body, of the cover body, and the two ends of the conductive rod are electrically connected with the battery to form a circuit; an indicating lamp used for displaying the intensity of the electric quantity is further arranged above the cover body and connected in the circuit in series. According to the technical scheme, through alkaline volatile nitrogen-containing compounds (TVB-N) generated by decay and deterioration of the fresh food, the guiding performance of the conductive rod can be influenced by the TVB-N, so that the conductivity of the conductive rod is reduced, the strength of the indicator light is influenced, and people can visually judge the freshness of the fresh food through the indicator light.

Description

Technical Field

[0001] The present invention generally relates to the field of fresh food preservation, and particularly to a fresh-keeping box capable of prompting the freshness of meat. Background Art

[0002] Fresh refers to primary products that are sold after only necessary preservation and simple sorting on the shelves without undergoing deep processing such as cooking and production. Fresh products have basically the same characteristics and storage conditions, and need to be fresh-preserved, refrigerated, or frozen.

[0003] With the improvement of social living standards, the demand for fresh food and the attention to food safety are increasing day by day. Fresh products (meat and seafood) are affected by their freshness according to different environmental conditions, such as temperature, humidity, and air pressure.

[0004] After consumers purchase fresh products and store them for a long time, it is very uncertain to simply judge the freshness of the food by the naked eye or the production date. Summary of the Invention

[0005] In view of the problems existing in the above-mentioned prior art according to the present invention, a fresh-keeping box capable of prompting the freshness of meat is provided, including: a box body with an open upper end for containing fresh products; a battery is provided on the box body; a cover body is detachably connected above the box body; a conductive rod is provided on the cover body, and the conductive rod is made of doped polyaniline material, and it is detachably connected to the side of the cover body facing the box body. Both ends of the conductive rod are electrically connected to the battery to form a circuit; an indicator light for displaying the strength of the electric quantity is also provided above the cover body, and the indicator light is connected in series in the circuit. With the above technical features, during the process of storing fresh food in the fresh-keeping box, as the fresh food is affected by environmental factors, the fresh food will slowly deteriorate and generate alkaline volatile nitrogen-containing compounds (TVB-N). As the freshness of the food decreases, the concentration of TVB-N will gradually increase, and TVB-N will gradually come into contact with the conductive rod. Since the conductive rod is made of doped polyaniline material, TVB-N will affect the conductivity of the conductive rod, thereby reducing the conductivity of the conductive rod and further affecting the strength of the indicator light, so that personnel can intuitively judge the freshness of fresh food through the indicator light.

[0006] In some embodiments, conductive caps are sleeved at both ends of the conductive rod, and contact metal sheets that are elastically arranged on the inner walls of the conductive caps and are in communication with the circuit are provided. Thus, the contact metal sheets not only play a role in connecting the circuit, but also, through the elastic action of the contact metal sheets, can increase the stability of the conductive cap sleeved on the end of the conductive rod and ensure the stable connection of the electric quantity.

[0007] In some embodiments, the wires of the circuit are all hidden and arranged in the interlayer of the box body or the cover body, and two sets of conductive components for circuit connection are arranged between the upper port of the box body and the cover body. Thus, the wires are hidden in the box body or the cover body, ensuring the stable connection of the circuit, and the conductive components can ensure the stable circuit connection after the cover body and the box body are closed.

[0008] In some embodiments, the conductive component includes an upper cover metal cap, which is located at the edge of the cover body and is electrically connected to one end of the conductive rod; it also includes a lower box metal contact plate, which is fixed on the inner wall of the box body and is located in the area where it contacts the upper cover metal cap after the cover body and the box body are tightly closed. Thus, the area where the lower box metal contact plate is in electrical contact with the upper cover metal cap is at the inner wall edge of the box body, avoiding the risk of failure caused by the conductive area contacting the external environment.

[0009] In some embodiments, a sliding hole for accommodating the upper cover metal cap to slide is provided on the cover body, the upper cover metal cap is located in the sliding hole, and a metal spring is also provided in the sliding hole. One end of the metal spring is fixedly connected to the upper cover metal cap, and the other end abuts against the bottom wall of the sliding hole and is electrically connected to one end of the conductive rod. Thus, the setting of the metal spring enables the upper cover metal cap to always maintain a state of abutting against the lower box metal contact plate after the cover body and the box body are covered with each other, ensuring the stable connection of the circuit, and also giving a certain tolerance space when the cover body is covered, that is, when the cover body is not tightly covered, the upper cover metal cap can still maintain a state of abutting against the lower box metal contact plate.

[0010] In some embodiments, a groove for accommodating the battery is provided on the bottom wall of the box body. Thus, setting the battery outside the box body will not directly contact the fresh food on the one hand, and is also conducive to battery replacement on the other hand.

[0011] In some embodiments, a slot for accommodating the conductive rod is provided on the side of the cover body facing the box body. Thus, on the one hand, it plays a role of shielding and protecting the conductive rod, reducing the mutual collision between the conductive rod and the external environment and ensuring the integrity of the conductive rod; on the other hand, it also reduces the abruptness of the position of the conductive rod and reasonably utilizes the space.

[0012] In some embodiments, two elastic plates for clamping the conductive rod are fixedly arranged at intervals in the slot, and a limiting convex rib is arranged on one side of each elastic plate facing the opposite elastic plate. Thus, through the mutual cooperation of the elastic plate and the limiting convex rib, the conductive rod is clamped, and at the same time, the fixation process is simplified.

[0013] In some embodiments, an extrusion component for disassembling the conductive rod is provided in the area of the cover body between the two elastic plates;

[0014] The extrusion assembly includes a pressing rod slidably connected to the cover body;

[0015] A telescopic spring is sleeved on the pressing rod, and the telescopic spring is located above the cover body;

[0016] A limiting piece fixed to the pressing rod is arranged above the telescopic spring;

[0017] The end of the pressing rod below the cover body is connected with a contact piece for extruding the conductive rod. Thus, when replacing the conductive rod, only need to press the pressing rod to drive the telescopic spring to be elastically compressed, and then make the contact piece at the end of the pressing rod extrude the conductive rod, so that the conductive rod is disengaged from the clamping of the two elastic plates on the conductive rod, improving the replacement efficiency of the conductive rod.

[0018] It should be understood that the content described in the Summary of the Invention section is not intended to limit the key or important features of the embodiments of the present disclosure, nor is it used to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. Brief Description of the Drawings

[0019] Figure 1 Shows a schematic diagram of the overall structure of a freshness preservation box capable of prompting the freshness of meat provided by an embodiment of the present invention;

[0020] Figure 2 Shows a schematic diagram of the bottom structure of the box body in a freshness preservation box capable of prompting the freshness of meat provided by an embodiment of the present invention;

[0021] Figure 3 Shows a schematic diagram of the bottom area of the cover body in a freshness preservation box capable of prompting the freshness of meat provided by an embodiment of the present invention;

[0022] Figure 4 Shows a schematic diagram of the structure of the conductive cap in a freshness preservation box capable of prompting the freshness of meat provided by an embodiment of the present invention;

[0023] Figure 5 Shows a sectional view of a freshness preservation box capable of prompting the freshness of meat provided by an embodiment of the present invention;

[0024] Figure 6 Shows Figure 5 An enlarged view of Detail A, and shows the conductive assembly;

[0025] Figure 7 Shows Figure 5 An enlarged view of Detail B, and shows the extrusion assembly.

[0026] Symbol Description

[0027] 1. Box body; 11. Groove; 12. Battery compartment; 13. Battery level indicator; 2. Lid; 21. Latching portion; 22. Insertion portion; 23. Sealing ring; 24. Indicator light; 25. Embedded groove; 26. Connecting rope; 27. Conductive cap; 271. Accommodating groove; 272. Contact metal sheet; 28. Slide hole; 3. Conductive rod; 4. Snap; 41. Elastic plate; 42. Limiting rib; 5. Conductive component; 51. Metal spring; 52. Upper cover metal cap; 53. Lower box metal contact plate; 6. Extrusion component; 61. Pressing rod; 62. Telescopic spring; 63. Limiting piece; 64. Contact piece. Detailed implementation mode

[0028] Next, the preferred embodiments (or implementation modes) of the present invention will be described in detail with reference to the accompanying drawings.

[0029] The present utility model provides a fresh-keeping box that can prompt the freshness of meat. The fresh-keeping box includes a box body 1 and a lid 2 for covering the box body 1. An indicator light 24 is provided on the top of the lid 2, and a doped polyaniline conductive rod 3 is clamped at the bottom of the lid 2. A battery is provided at the bottom of the box body 1, and a sandwich layer is provided in both the box body 1 and the lid 2. A wire is provided in the sandwich layer, and the wire connects the conductive rod 3, the indicator light 24, and the battery to form a circuit, so that the indicator light 24 remains constantly lit. When fresh food is stored in the box body 1, if the storage time is too long, the fresh food will gradually deteriorate and produce alkaline volatile nitrogen compounds (TVB-N). The concentration of TVB-N will gradually increase, and TVB-N will gradually come into contact with the conductive rod 3. Since the conductive rod 3 is made of doped polyaniline, TVB-N will affect the conductivity of the conductive rod 3, thereby reducing the conductivity of the conductive rod 3, and further affecting the intensity of the indicator light 24, so that personnel can visually judge the freshness of fresh food through the indicator light 24.

[0030] Next, refer to Figures 1-7 to describe a fresh-keeping box of the present utility model that can prompt the freshness of meat.

[0031] Figure 1 Fig. shows the overall structural schematic diagram of a fresh-keeping box provided by an embodiment of the present utility model. Refer to Figure 1As shown, a fresh-keeping box that can indicate the freshness of meat provided in this embodiment includes a box body 1 at the bottom, and a cover body 2 for covering the port of the box body 1. The box body 1 can be of any shape and is not limited by the shape. Its port is located at the top of the box body 1, so as to facilitate the placement of fresh food. The cover body 2 includes a buckle part 21 at the top, and a plug-in part 22 fixed at the bottom of the buckle part 21, so that after the cover body 2 and the box body 1 are covered with each other, the plug-in part 22 is located inside the box body 1. In order to improve the sealing and fresh-keeping effect of the fresh-keeping box, a sealing ring 23 is provided on the plug-in part 22 to ensure the airtightness of the cover body 2 and the box body 1.

[0032] Figure 2 The bottom structure diagram of the box body 1 in the fresh-keeping box provided by the embodiment of the utility model is shown. Figure 2 As shown, a groove 11 is provided at the bottom of the box body 1, and a battery compartment 12 for placing batteries is fixed in the groove 11. Since the electrical equipment of the entire circuit is limited and the output power is small, the battery can be a button battery, or a common No. 5 battery or No. 7 battery, so as to facilitate future replacement. An interlayer is provided inside the box body 1, and a wire is provided in the interlayer. The wire is respectively connected to the positive electrode and the negative electrode in the battery compartment 12, and the wire is extended toward the port of the box body 1.

[0033] refer to Figure 1 As shown, an indicator light 24 is embedded on the top of the cover 2. The indicator light 24 is a conventional LED power indicator light 24 and includes a plurality of lamp beads. The percentage of power in the circuit can be displayed by the number of lamp beads that light up, making the display effect more intuitive.

[0034] Figure 3 The bottom area of ​​the cover 2 in the fresh-keeping box provided by the embodiment of the utility model is shown. Figure 3 As shown, a strip-shaped embedding groove 25 is provided at the bottom of the cover body 2, and the embedding groove 25 can be used to fix the strip-shaped conductive rod 3, and two buckles 4 are respectively provided on the bottom wall of the embedding groove 25 to facilitate fixing the conductive rod 3. The buckle 4 includes an elastic plate 41, one end of the elastic plate 41 is fixed on the bottom wall of the embedding groove 25, and the other end of the elastic plate 41 is provided with a limiting ridge 42, and the limiting ridge 42 is located on one side of the elastic plate 41. The elastic plates 41 of the two buckles 4 are parallel to each other, and the gap between the elastic plates 41 is the same as the width of the conductive rod 3. When the conductive rod 3 is located between the two elastic plates 41, the limiting ridge 42 is located at the edge of the conductive rod 3, thereby limiting the separation of the conductive rod 3 from the buckle 4.

[0035] Figure 4 The schematic diagram of the structure of the conductive cap 27 in the fresh-keeping box which can indicate the freshness of meat provided by the embodiment of the utility model is shown.Figure 4 As shown, at both ends of the conductive rod 3, there is a conductive cap 27 respectively. The conductive cap 27 is hung at the bottom of the cover body 2 through a connecting rope 26. Inside the conductive cap 27, there is a receiving groove 271 for receiving the end of the conductive rod 3. On the inner wall of the receiving groove 271, there is a contact metal sheet 272. One end of the contact metal sheet 272 is fixedly connected to the conductive cap 27, and the other end extends towards the bottom wall of the conductive cap 27 and is integrally arched, making itself elastic. And inside the connecting rope 26, there is a wire. One end of the wire is connected to the contact metal sheet 272, and the other end of the wire extends into the interior of the cover body 2. When the end of the conductive rod 3 is inserted into the receiving groove 271 of the conductive cap 27, the contact metal sheet 272 bends by its own elasticity to squeeze the conductive rod 3, so that the conductive rod 3 closely abuts against the inner wall of the conductive cap 27, thus ensuring the firmness of the insertion of the conductive rod 3 and the conductive cap 27, as well as the stability of the electrical connection between the contact metal sheet 272 and the conductive rod 3. One side of the wire is connected to the indicator lamp 24 inside the cover body 2 and extends the wire towards the edge of the insertion part 22 of the cover body 2.

[0036] Figure 5 Fig. shows a cross-sectional view of a fresh-keeping box provided by an embodiment of the present utility model that can prompt the freshness of meat; Figure 6 shows Figure 5 An enlarged view of detail A and shows the conductive component 5. Refer to Figure 5 and Figure 6 As shown, between the insertion part 22 of the cover body 2 and the box body 1, there are two conductive components 5 for connecting the positive or negative pole of the battery. The edge of the insertion part 22 of the cover body 2 is not blocked by the sealing ring 23, and a sliding hole 28 is horizontally opened on its outer wall. The above-mentioned conductive component 5 includes a metal spring 51 and an upper cover metal cap 52 arranged in the sliding hole 28 in sequence. One end of the metal spring 51 abuts against the bottom wall of the sliding hole 28 and is connected to the wire led out by one side of the connecting rope 26; the other end of the metal spring 51 is connected to the upper cover metal cap 52, so that in the natural state of the metal spring 51, a part of the upper cover metal cap 52 protrudes from the port of the sliding hole 28. And when the cover body 2 and the box body 1 are closed, a lower box metal contact plate 53 is embedded in the area corresponding to the upper cover metal cap 52 on the inner wall of the box body 1. The lower box metal contact plate 53 is connected to the wire on one side inside the box body 1, so that the end of the upper cover metal cap 52 abuts against one side of the lower box metal contact plate 53, realizing the connection of the circuit, and making the conductive rod 3 and the indicator lamp 24 in series in the circuit where the battery is located. Since the upper cover metal cap 52 can slide in the sliding hole 28, it can reduce the situation of circuit disconnection caused by the imperfect closing of the cover body 2 and the box body 1, thus improving the stability of circuit connection.

[0037] The conductive rod 3 is a rod made of doped polyaniline material. Polyaniline is a polymer compound with special electrical and optical properties. It can have electrical conductivity and electrochemical properties after being doped. After the cover 2 and the box body 1 are closed, the conductive rod 3 is exposed in the internal space of the fresh-keeping box. If fresh food is placed in the box body 1 for a long time, the fresh food will gradually become corrupt and deteriorate due to environmental factors, and produce alkaline volatile nitrogen-containing compounds (TVB-N). The concentration of TVB-N will gradually increase, and TVB-N will gradually contact the conductive rod 3. Since the conductive rod 3 is made of doped polyaniline material, TVB-N will affect the guiding performance of the conductive rod 3, thereby reducing the conductive performance of the conductive rod 3, and further affecting the strength of the indicator light 24, so that personnel can intuitively judge the freshness of the fresh food through the indicator light 24. The conductive rod 3 is a consumable. After its conductive performance decreases, the conductive rod 3 needs to be replaced.

[0038] Figure 7 Shows Figure 5 The enlarged view of detail B shows the extrusion assembly 6. The top of the cover 2 is also provided with an extrusion assembly 6 for facilitating the disassembly of the conductive rod 3. The extrusion assembly 6 includes a pressing rod 61 vertically passing through the cover 2, and the pressing rod 61 is located between the two buckles 4; a telescopic spring 62 is sleeved on the pressing rod 61, and the telescopic spring 62 is located above the cover 2, and the upper end of the pressing rod 61 is also fixed with a limit plate 63 for limiting the separation of the telescopic spring 62 from the pressing rod 61, and the lower end of the pressing rod 61 is fixed with a contact plate 64 with a cross-sectional size larger than the end size of the pressing rod 61, thereby limiting the separation of the end of the pressing rod 61 from the cover 2. If the conductive rod 3 is to be replaced, the conductive cap 27 is first separated from the end of the conductive rod 3, and then the pressing rod 61 is pressed downward from the top of the cover 2, and the contact plate 64 squeezes the conductive rod 3, and the conductive rod 3 is separated from the retention of the two buckles 4, so that the conductive rod 3 and the cover 2 are quickly separated.

[0039] In some embodiments, reference Figure 2 As shown, a power indicator light 13 is also provided at the bottom of the box body 1, which is connected in parallel on both sides of the battery to intuitively understand the actual power of the battery, so as to reduce the influence of the battery power on the indicator light 24, thereby causing misjudgment of the freshness of the food.

[0040] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various modifications and changes can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A fresh-keeping box that can indicate the freshness of meat, characterized in that: include: The box body (1) has an opening at the upper end thereof and is used for containing fresh food; A battery is arranged on the box body (1); A cover body (2) is detachably connected to the top of the box body (1); A conductive rod (3) is arranged on the cover body (2). The conductive rod (3) is made of doped polyaniline and is detachably connected to a side of the cover body (2) facing the box body (1). Both ends of the conductive rod (3) are electrically connected to the battery to form a circuit. An indicator light (24) for displaying the power level is also provided above the cover body (2), and the indicator light (24) is connected in series in the circuit.

2. A fresh-keeping box capable of indicating the freshness of meat according to claim 1, characterized in that: Conductive caps (27) are sleeved on both ends of the conductive rod (3), and contact metal sheets (272) interconnected with the circuit are elastically arranged on the inner wall of the conductive cap (27).

3. A fresh-keeping box capable of indicating the freshness of meat according to claim 1, characterized in that: The wires of the circuit are all hidden in the interlayer of the box body (1) or the cover body (2), and two groups of conductive components (5) for connecting the circuit are arranged between the upper port of the box body (1) and the cover body (2).

4. A fresh-keeping box capable of indicating the freshness of meat according to claim 3, characterized in that: The conductive component (5) comprises An upper metal cap (52), the upper metal cap (52) is located at the edge of the cover body (2) and is electrically connected to one end of the conductive rod (3); and further includes The lower box metal contact plate (53) is fixed to the inner wall of the box body (1) and is located in the area that contacts the upper cover metal cap (52) after the cover body (2) and the box body (1) are tightly covered.

5. A fresh-keeping box capable of indicating the freshness of meat according to claim 4, characterized in that: The cover body (2) is provided with a sliding hole (28) for accommodating the sliding of the upper cover metal cap (52), the upper cover metal cap (52) is located in the sliding hole (28), and a metal spring (51) is also provided in the sliding hole (28), one end of the metal spring (51) is fixedly connected to the upper cover metal cap (52), and the other end abuts against the bottom wall of the sliding hole (28) and is electrically connected to one end of the conductive rod (3).

6. The fresh-keeping box capable of indicating the freshness of meat according to claim 1, characterized in that: The bottom wall of the box body (1) is provided with a groove (11) for accommodating batteries.

7. The fresh-keeping box capable of indicating the freshness of meat according to claim 1, characterized in that: A groove (25) for accommodating a conductive rod (3) is provided on one side of the cover body (2) facing the box body (1).

8. The fresh-keeping box capable of indicating the freshness of meat according to claim 7, characterized in that: Two elastic plates (41) for clamping the conductive rod (3) are fixed at intervals in the embedding groove (25), and each of the elastic plates (41) is provided with a limiting convex ridge (42) facing a side opposite to the elastic plate (41).

9. A fresh-keeping box capable of indicating the freshness of meat according to claim 8, characterized in that: An extrusion assembly (6) for disassembling the conductive rod (3) is provided in the area of ​​the cover body (2) between the two elastic plates (41); The extrusion assembly (6) comprises a pressing rod (61) slidably connected to the cover body (2); A telescopic spring (62) is sleeved on the pressing rod (61), and the telescopic spring (62) is located above the cover body (2); A limiting plate (63) fixed to the pressing rod (61) is arranged above the telescopic spring (62); The end of the pressing rod (61) located below the cover body (2) is connected to a contact piece (64) for pressing the conductive rod (3).

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