Folding meal box

Abstract

The utility model relates to the technical field of lunch boxes, and discloses a folding lunch box which comprises a box body, a vacuum mechanism and a cover body, a folding box is fixedly arranged at the lower end of the box body, the cover body and the box body are arranged in a threaded and sleeved mode, the upper end of the cover body is fixedly connected with the vacuum mechanism, the box body comprises a base layer, and an oil-resistant layer is fixedly arranged at the upper end of the base layer. A heat insulation layer is fixedly arranged at the lower end of the base layer, the vacuum mechanism comprises a fixed frame and a rotating frame, a rotating cylinder is rotationally arranged at the position, close to one side, in the fixed frame, a connecting rod is fixedly arranged in the rotating cylinder, the connecting rod penetrates through the rotating frame and is fixedly provided with a bevel gear, and a tooth groove is formed in the position, close to the lower portion, of the inner surface of the rotating frame. And a sleeve is fixedly arranged in the middle of the inner bottom surface of the fixed frame. The lunch box is provided with the vacuum mechanism, vacuum is formed in the lunch box by rotating the rotating frame, the shelf life of food is prolonged, and the foldable lunch box design can increase the capacity and facilitate storage.

Description

Technical Field

[0001] The utility model relates to the technical field of lunch boxes, in particular to a foldable lunch box. Background Art

[0002] Lunch boxes are containers used to hold food and are convenient to carry. They are usually made of one or more materials. There are various types of lunch boxes according to different uses and environmental requirements. Lunch boxes are convenient and practical containers that bring convenience to people's lives. At the same time, they also reduce the need for disposable tableware to a certain extent and have certain environmental protection significance.

[0003] Existing lunch boxes can generally only be covered with a lid to reduce pollution inside the lunch box, but the current ordinary lunch boxes cannot form a vacuum state inside. Lunch boxes that cannot form a vacuum state are easily affected by external air, moisture and microorganisms, causing the food to lose freshness quickly. For some easily perishable foods, the storage time is short. Therefore, the utility model provides a foldable lunch box to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a foldable lunch box. The lunch box is provided with a vacuum mechanism, and a vacuum is formed inside the lunch box by rotating a rotating frame, thereby extending the shelf life of food. In addition, the foldable lunch box design can increase the capacity and facilitate storage.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A foldable lunch box, comprising a box body, a vacuum mechanism and a cover body, wherein a foldable box is fixedly arranged at the lower end of the box body, the cover body is threadedly sleeved with the box body, and the upper end of the cover body is fixedly connected with the vacuum mechanism;

[0007] The box body comprises a base layer, an anti-oil layer is fixedly arranged on the upper end of the base layer, and a heat insulation layer is fixedly arranged on the lower end of the base layer;

[0008] The vacuum mechanism comprises a fixed frame and a rotating frame, a rotating drum is rotatably arranged at one side of the fixed frame, a connecting rod is fixedly arranged inside the rotating drum, the connecting rod penetrates the rotating frame and is fixedly provided with a bevel gear, a tooth groove is provided at the lower part of the inner surface of the rotating frame, a sleeve is fixedly provided at the middle of the inner bottom surface of the fixed frame, a push rod is movably sleeved inside the sleeve, a piston is fixedly provided at one side of the push rod, a through hole is provided at one side of the piston, a one-way valve is fixedly provided inside the through hole, and a spring is fixedly provided at one side of the piston;

[0009] Through the above technical solution, this foldable lunch box adopts a vacuum mechanism 4, which drives the bevel gear by rotating the rotating frame, further pushing the rotating drum to rotate. One side of the rotating drum is an inclined surface, and the spring tension will push the push rod on one side of the piston to contact the inclined surface, causing the piston to move back and forth. When the piston moves, the air in the lunch box is extracted through the one-way valve and discharged through the air outlet, thereby achieving a vacuum state inside the lunch box. This design can extend the shelf life of food, prevent oxidation and bacterial growth, and improve the preservation effect of food.

[0010] Furthermore, a bottom plate is fixedly provided at the lower end of the folding box, four telescopic rods are fixedly provided at the upper edge of the bottom plate, a fixing ring is fixedly provided at the lower part of the box body, and the upper ends of the four telescopic rods are connected to the fixing ring;

[0011] According to the above technical solution, by arranging the bottom plate and the telescopic rod on the lower side of the folding box, the telescopic rod can be opened for support when the folding box is opened.

[0012] Furthermore, a through slot is provided at one side of the upper end surface of the cover body, a rotating plate is rotatably provided inside the through slot, a ventilation slot is provided at one side of the upper end of the rotating plate, and the rotating plate is made of rubber material;

[0013] According to the technical solution, a rotating plate is arranged on the upper side of the cover body and the vent groove is aligned with the through groove by rotating the rotating plate, so that the pressure difference between the inside and the outside can be the same when opening, thereby facilitating the opening of the cover body.

[0014] Furthermore, the base layer includes long bamboo fibers and short fibers, and the long bamboo fibers and the short fibers are interwoven;

[0015] Through the above technical solution, the long bamboo fiber has the characteristics of low cost and high mechanical strength to provide guarantee for the performance of the product, and the long bamboo fiber is interwoven with the short fiber to form a network, which further improves the mechanical properties.

[0016] Furthermore, an air inlet is provided on one side of the top surface of the cover body, and a first water-proof and breathable membrane is provided inside the air inlet;

[0017] Through the above technical solution, the air inlet is provided so that the gas inside the lunch box can enter the vacuum mechanism, and the No. 1 waterproof and breathable membrane is provided to prevent moisture from entering the vacuum mechanism.

[0018] Furthermore, an air outlet is provided in the middle of the top surface of the fixed frame, and a No. 2 water-proof and breathable membrane is fixedly provided inside the air outlet;

[0019] Through the above technical solution, the gas in the vacuum mechanism can be discharged by setting the air outlet, and the No. 2 waterproof and breathable membrane also prevents moisture from entering.

[0020] Further, the tooth groove is meshed with the bevel gear;

[0021] Through the above technical solution, the bevel gear can be driven to rotate by rotating the rotating frame through the meshing of the tooth groove and the bevel gear.

[0022] The utility model has the following beneficial effects:

[0023] The utility model provides a foldable lunch box, wherein a vacuum mechanism is provided, and the rotating frame is rotated. Since the tooth groove is meshed with the bevel gear, the bevel gear is driven to rotate when the rotating frame is rotated, thereby causing the rotating drum to rotate. Since one side of the rotating drum is provided with an inclined surface, the tension of the spring itself will push the piston to one side, thereby causing one end of the push rod to abut against the inclined surface of the rotating drum. When the rotating drum rotates, the piston will move back and forth. Since a through hole is provided on one side of the piston and a one-way valve is provided, the air in the lunch box will be extracted when the piston moves to one side, and the extracted gas will be discharged through the air outlet, thereby making the interior of the lunch box in a certain vacuum state. Keeping the interior of the lunch box in a vacuum state can slow down the metabolic rate of the food and reduce the possibility of bacterial growth when it is necessary to extend the shelf life of the food or prevent the food from being oxidized, thereby extending the shelf life of the food. In addition, the lunch box is provided with a foldable box, which can be folded to increase the volume of the lunch box and facilitate storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an axonometric schematic diagram of the utility model;

[0025] Figure 2 It is a front cross-sectional schematic diagram of the utility model in an open state;

[0026] Figure 3 It is a front cross-sectional schematic diagram of the utility model in a folded state;

[0027] Figure 4 It is a top cross-sectional schematic diagram of the vacuum mechanism of the utility model;

[0028] Figure 5 It is an enlarged schematic diagram of point A of the utility model;

[0029] Figure 6 It is a structural schematic diagram of the box body of the utility model;

[0030] Figure 7 This is a structural arrangement diagram of the base layer of the present utility model.

[0031] Legend:

[0032] 1. Box body; 2. Folding box; 3. Bottom plate; 4. Vacuum mechanism; 5. Telescopic rod; 6. Fixed ring; 7. Cover body; 8. Air inlet; 9. No. 1 waterproof breathable membrane; 10. Through groove; 11. Rotating plate; 101. Base layer; 102. Anti-oil layer; 103. Heat insulation layer; 10101. Long bamboo fiber; 10102. Short fiber; 401. Fixed frame; 402. Rotating frame; 403. Spring; 404. Piston; 405. Through hole; 406. One-way valve; 407. Sleeve; 408. Push rod; 409. Rotating cylinder; 410. Connecting rod; 411. Bevel gear; 412. Tooth groove; 413. Air outlet; 414. No. 2 waterproof breathable membrane. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Example

[0035] Reference Figure 1-7 The utility model provides an embodiment: a foldable lunch box, including a box body 1, a vacuum mechanism 4 and a cover body 7, a foldable box 2 is fixedly arranged at the lower end of the box body 1, the cover body 7 is threadedly sleeved with the box body 1, and the upper end of the cover body 7 is fixedly connected to the vacuum mechanism 4, the box body 1 includes a base layer 101, an anti-oil layer 102 is fixedly arranged at the upper end of the base layer 101, and a heat insulation layer 103 is fixedly arranged at the lower end of the base layer 101.

[0036] By providing the folding box 2, the internal space of the lunch box can be increased when the folding part is opened, and the space occupied can be reduced after folding for convenient storage. By providing the anti-oil layer 102, the anti-oil layer 102 is set as a PE coating, which can prevent grease and juice from penetrating into the interior of the lunch box, making it easier to clean. The heat insulation layer 103 is set as a polyurethane coating, which has good thermal stability and heat insulation performance. The polyurethane coating can be used to form a heat preservation layer to help maintain the temperature of food.

[0037] The vacuum mechanism 4 includes a fixed frame 401 and a rotating frame 402. A rotating cylinder 409 is rotatably arranged at one side inside the fixed frame 401. A connecting rod 410 is fixedly arranged inside the rotating cylinder 409. The connecting rod 410 penetrates the rotating frame 402 and is fixedly provided with a bevel gear 411. A tooth groove 412 is provided at the lower part of the inner surface of the rotating frame 402. A sleeve 407 is fixedly arranged at the middle of the inner bottom surface of the fixed frame 401. A push rod 408 is movably sleeved inside the sleeve 407. A piston 404 is fixedly arranged on one side of the push rod 408. A through hole 405 is provided on one side of the piston 404. A one-way valve 406 is fixedly arranged inside the through hole 405. A spring 403 is fixedly arranged on one side of the piston 404.

[0038] By setting a rotating drum 409, one end of the rotating drum 409 is set as an inclined surface, and when the rotating drum 409 rotates, it can drive the push rod 408 to move back and forth, thereby driving the piston 404 to move to one side. By setting a bevel gear 411 connected to the rotating drum 409, when the rotating frame 402 is rotated, the bevel gear 411 can be driven to rotate. By setting a one-way valve 406, the gas can only move in one direction, so that the gas inside the lunch box can be extracted.

[0039] A bottom plate 3 is fixedly provided at the lower end of the folding box 2, and four telescopic rods 5 are fixedly provided at the edge of the upper end of the bottom plate 3. A fixing ring 6 is fixedly provided at the lower part of the box body 1, and the upper ends of the four telescopic rods 5 are connected to the fixing ring 6. By arranging the bottom plate 3 and the telescopic rods 5 at the lower side of the folding box 2, the telescopic rods 5 can be opened for support when the folding box 2 is opened. A through groove 10 is provided at one side of the upper end surface of the cover body 7, and a rotating plate 11 is rotatably provided inside the through groove 10. A ventilation groove is provided at one side of the upper end of the rotating plate 11, and the rotating plate 11 is set to be made of rubber material. By arranging the rotating plate 11 on the upper side of the cover body 7, the ventilation groove is aligned with the through groove 10 by rotating the rotating plate 11, so that the internal and external pressure differences can be made the same when opening, thereby facilitating the opening of the cover body 7. The base layer 101 includes long bamboo fibers 10101 and short fibers 10102, and the long bamboo fibers 10101 and the short fibers 10102 are interwoven. 0101 has the characteristics of low cost and high mechanical strength to provide guarantee for the performance of the product. The long bamboo fiber 10101 and the short fiber 10102 are interwoven to form a network, which further improves the mechanical properties. An air inlet 8 is opened on one side of the inner top surface of the cover body 7, and a No. 1 waterproof breathable membrane 9 is arranged inside the air inlet 8. By setting the air inlet 8, the gas inside the lunch box can enter the vacuum mechanism 4. By setting the No. 1 waterproof breathable membrane 9, the moisture entering the vacuum mechanism 4 is relatively small. An air outlet 413 is opened in the middle of the inner top surface of the fixed frame 401, and a No. 2 waterproof breathable membrane 414 is fixedly arranged inside the air outlet 413. The gas in the vacuum mechanism 4 can be discharged by setting the air outlet 413, and the No. 2 waterproof breathable membrane 414 also prevents moisture from entering. The tooth groove 412 is meshed with the bevel gear 411. The tooth groove 412 is meshed with the bevel gear 411, and the bevel gear 411 can be driven to rotate by rotating the rotating frame 402.

[0040] Working principle: When in use, the folding box 2 can be opened to increase the volume of the lunch box. When loading food, the rotating frame 402 can be rotated. Since the tooth groove 412 is engaged with the bevel gear 411, the bevel gear 411 will be driven to rotate when the rotating frame 402 is rotated, thereby causing the rotating drum 409 to rotate. Since one side of the rotating drum 409 is set as an inclined surface, the tension of the spring 403 itself will push the piston 404 to one side, so that one end of the push rod 408 is against the inclined surface of the rotating drum 409. When the rotating drum 409 rotates, the piston 404 will move back and forth. Since a through hole 405 is provided on one side of the piston 404 and a one-way valve 406 is provided, the air in the lunch box will be extracted when the piston 404 moves to one side, and the extracted gas will be discharged through the air outlet 413, so that a certain vacuum state can be created inside the lunch box.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A foldable lunch box, comprising a box body (1), a vacuum mechanism (4) and a cover body (7), characterized in that: A folding box (2) is fixedly arranged at the lower end of the box body (1), the cover body (7) is threadedly sleeved on the box body (1), and the upper end of the cover body (7) is fixedly connected to the vacuum mechanism (4); The box body (1) comprises a base layer (101), an anti-oil layer (102) is fixedly provided on the upper end of the base layer (101), and a heat insulation layer (103) is fixedly provided on the lower end of the base layer (101); The vacuum mechanism (4) comprises a fixed frame (401) and a rotating frame (402). A rotating cylinder (409) is rotatably arranged at one side of the fixed frame (401). A connecting rod (410) is fixedly arranged inside the rotating cylinder (409). The connecting rod (410) passes through the rotating frame (402) and is fixedly provided with a bevel gear (411). A tooth groove (412) is provided at the lower part of the inner surface of the rotating frame (402). A sleeve (407) is fixedly arranged at the middle of the inner bottom surface of the fixed frame (401). A push rod (408) is movably sleeved inside the sleeve (407). A piston (404) is fixedly arranged on one side of the push rod (408). A through hole (405) is provided on one side of the piston (404). A one-way valve (406) is fixedly arranged inside the through hole (405). A spring (403) is fixedly arranged on one side of the piston (404).

2. A foldable lunch box according to claim 1, characterized in that: A bottom plate (3) is fixedly arranged at the lower end of the folding box (2), four telescopic rods (5) are fixedly arranged at the upper end of the bottom plate (3) near the edge, a fixing ring (6) is fixedly arranged at the lower part of the box body (1), and the upper ends of the four telescopic rods (5) are connected to the fixing ring (6).

3. A foldable lunch box according to claim 1, characterized in that: A through groove (10) is provided at one side of the upper end surface of the cover body (7), a rotating plate (11) is rotatably arranged inside the through groove (10), a ventilation groove is provided at one side of the upper end of the rotating plate (11), and the rotating plate (11) is made of rubber material.

4. A foldable lunch box according to claim 1, characterized in that: The base layer (101) comprises long bamboo fibers (10101) and short fibers (10102), and the long bamboo fibers (10101) and the short fibers (10102) are interwoven.

5. A foldable lunch box according to claim 1, characterized in that: An air inlet (8) is provided on one side of the inner top surface of the cover body (7), and a first waterproof and breathable membrane (9) is provided inside the air inlet (8).

6. A foldable lunch box according to claim 1, characterized in that: An air outlet (413) is provided in the middle of the top surface of the fixing frame (401), and a No. 2 water-proof and breathable membrane (414) is fixedly arranged inside the air outlet (413).

7. A foldable lunch box according to claim 1, characterized in that: The tooth groove (412) is meshed with the bevel gear (411), and a spring (403) is fixedly arranged on one side of the piston (404).

Images