Box lunch heat preservation handbag with good heat preservation effect
By incorporating rectangular stepped grooves, magnetic blocks, and metal sheets into the insulated lunchbox carrying bag, the gap between the bag and the box is solved, resulting in better sealing and insulation performance.
Patent Information
- Application Number
- CN202520164321.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-01-24
AI Technical Summary
The existing insulated lunchbox carrying bag does not match the lunchbox body, causing hot air to expand and leak out from the seal, affecting the insulation effect.
Design an insulated handbag comprising a rectangular stepped groove, a magnetic block, a cover plate, and a square metal sheet. Through magnetic adsorption and a tight-sealing structure, gaps are reduced and the airtightness is enhanced.
It effectively reduces heat loss, improves insulation, enhances sealing and service life, and ensures food temperature.
Smart Images

Figure CN223600992U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of heat preservation handbag, especially relates to a lunch box heat preservation handbag with good heat preservation effect. BACKGROUND
[0002] The lunch box heat preservation handbag, also known as a lunch box heat preservation bag or a lunch bag, is a portable handbag for carrying and heat preserving lunch boxes.
[0003] For office workers who need to bring their own lunch, the lunch box heat preservation handbag can heat preserve lunch boxes, which can help office workers maintain the temperature and taste of lunch and avoid food spoilage or cooling down.
[0004] The lunch box heat preservation handbag in the prior art does not match the lunch box body, and there is a gap between the lunch box heat preservation bag body and the lunch box body after the lunch is put into the heat preservation handbag. UTILITY MODEL CONTENT
[0005] The utility model aims at solving the problems in the background art and provides a lunch box heat preservation handbag with good heat preservation effect.
[0006] The utility model aims at solving the problems in the background art and provides a lunch box heat preservation handbag with good heat preservation effect.
[0007] This utility model provides a lunchbox insulated tote bag with good heat preservation effect, including a tote bag body, handles and a cover. The handles are fixedly provided on both the inner and outer surfaces of the tote bag body. A connecting fabric strap is sewn to the right side of the upper surface of the tote bag body. The cover is sewn onto the connecting fabric strap. A pull fabric strap is sewn to the left end of the cover. A rectangular stepped groove is opened on the upper inner side of the tote bag body. Multiple magnetic blocks are embedded at equal intervals in the bottom inner side of the rectangular stepped groove. A square frame-shaped metal sheet is embedded around the bottom surface of the cover.
[0008] Preferably, the handbag body is a rectangular box with an opening at the top, and the internal side length of the handbag body is equal to the side length of the lunchbox that needs to be kept warm.
[0009] Preferably, the side length of the rectangular stepped groove matches the side length of the cover plate, and the depth of the rectangular stepped groove is equal to the thickness of the cover plate.
[0010] Preferably, the square-shaped metal sheet is made of stainless steel that can be magnetically attracted.
[0011] Preferably, the handbag body and the cover plate include a foil layer, a heat insulation layer, a rigid plastic layer and a nylon cloth layer, and the handbag body is provided with a foil layer, a heat insulation layer, a rigid plastic layer and a nylon cloth layer from the inside to the outside and the cover plate is provided with a nylon cloth layer from the bottom to the top.
[0012] Preferably, the thermal insulation layer is made of pearl cotton.
[0013] Preferably, the right side surface of the cover plate is provided with a square groove that matches the square metal sheet, and the end of the pull strip is attached to the bottom and side of the square groove.
[0014] Preferably, the square metal sheet is fixedly adhered to the square groove with adhesive and presses down on the stretch fabric strip.
[0015] Preferably, a reinforcing piece is provided at the connection between the handle and the handbag body. The reinforcing piece is integrally formed with the handle and is sewn onto the surface of the handbag body.
[0016] Compared with the prior art, this utility model has at least the following beneficial effects:
[0017] 1. This utility model is equipped with a rectangular stepped groove, a magnetic block, a cover plate, and a square metal sheet. After the lunch box is placed into the handbag body, the cover plate is embedded in the rectangular stepped groove on the handbag body. The side of the cover plate is in close contact with the rectangular stepped groove to ensure sealing. The magnetic block is attracted to the upper surface of the square metal sheet to ensure the stability of the cover plate on the handbag body and increase the sealing effect.
[0018] 2. The utility model discloses a lunch box body is arranged in the handbag body, and the lunch box body is the rectangular shape of the side length that needs to keep warm, reduces the gap between lunch box body and handbag and lunch box body, reduces the gap between handbag body and lunch box body when lunch box body is put into the handbag body, prevents the heat of lunch from heating the air in the handbag body, causes the air to leak out from the gap between the connecting place of cover plate and box body by the heat of air heated collision, reduces the heat dissipation, guarantees the heat preservation effect.
[0019] 3. The utility model discloses a tin paper layer is arranged, increases the high temperature resistance of handbag body, and the heat preservation layer is arranged, increases the heat preservation of handbag body, and the hard plastic layer can guarantee that the shape of handbag body is not easy to deform, and the nylon cloth layer 7 can increase the beautiful and wear resistance of handbag body.
[0020] 4. The utility model discloses a cloth belt is arranged, needs to open the cover plate, and the cover plate is pulled to the cloth belt, and the cover plate is rotated along the handbag body through the connecting cloth belt, realizes the effect that the cover plate opens, and the operation is simple, convenient, and the end of cloth belt is pasted to the bottom surface and side surface of square frame shape groove, and the end of cloth belt is pressed and holds fixed through the square frame shape metal sheet, can guarantee the stability of the connecting place of cloth belt and cover plate, increases the service life.
[0021] 5. The utility model discloses a reinforcing sheet is arranged, and the reinforcing sheet can increase the contact area of the connecting place of handle and handbag body, and increase the stability of the connecting place of handle and handbag body. DRAWINGS
[0022] In order to make the technical scheme of the specific embodiment or prior art of the utility model more clearly, the following will briefly introduce the drawings needed to be used in the specific embodiment or prior art description. In all drawings, similar elements or parts are generally identified by similar reference signs. In the drawings, various elements or parts are not necessarily drawn according to the actual proportion.
[0023] Figure 1 It is the whole structure three-dimensional schematic diagram of the utility model Figure 1 .
[0024] Figure 2 It is the whole structure three-dimensional schematic diagram of the utility model Figure 2 .
[0025] Figure 3 It is the sectional structure schematic diagram of the utility model handbag body.
[0026] Figure 4 It is the three-dimensional structure split schematic diagram of the utility model cover plate.
[0027] Figure 5 It is the utility model Figure 4A enlarged structure schematic view.
[0028] [Reference signs]
[0029] 1, handbag body; 101, rectangular stepped groove; 102, magnetic block; 2, handle; 201, reinforcing sheet; 3, cover plate; 301, connecting cloth belt; 302, pulling cloth belt; 303, square frame-shaped metal sheet; 304, square frame-shaped groove; 4, tin paper layer; 5, thermal insulation layer; 6, hard plastic layer; 7, nylon cloth layer. DETAILED DESCRIPTION
[0030] Embodiment:
[0031] As Figures 1-5 shown, the utility model discloses a lunch box heat preservation handbag that good heat preservation effect provides, including handbag body 1, handle 2 and cover plate 3, both sides surface of handbag body 1 are fixedly provided with handle 2, the upper surface right side of handbag body 1 is sewed up and is provided with connecting cloth belt 301, and the connecting cloth belt 301 is sewed up and is provided with cover plate 3, and the left end of cover plate 3 is sewed up and is provided with pulling cloth belt 302, and the inside upper of handbag body 1 is provided with rectangular stepped groove 101, and the inside bottom of rectangular stepped groove 101 is embedded and is provided with a plurality of magnetic block 102, and the bottom surface all around of cover plate 3 is embedded and is provided with square frame-shaped metal sheet 303.
[0032] By being provided with rectangular stepped groove 101, magnetic block 102, cover plate 3 and square frame-shaped metal sheet 303, after lunch box body is put into handbag body 1, cover plate 3 is embedded in the rectangular stepped groove 101 on handbag body 1, the side of cover plate 3 is close to rectangular stepped groove 101, guarantees the leakproofness, and magnetic block 102 is adsorbed on the upper surface of square frame-shaped metal sheet 303, guarantees the stability of cover plate 3 on handbag body 1, increases the sealing effect.
[0033] In the embodiment, handbag body 1 is the rectangular box body of the upper opening, and the inside edge length of handbag body 1 is equal to the lunch box body edge length that needs heat preservation.
[0034] By setting the rectangular shape of handbag body 1 with the lunch box body edge length that needs heat preservation, reduce the gap between lunch box body and handbag and lunch box body, reduce the gap between handbag body and lunch box body when lunch box body is put into handbag body 1, prevent the lunch heat from heating the air in handbag body 1, cause the air to heat and collide and leak out from the gap between cover plate 3 and the lunch box, reduce the heat dissipation, guarantee the heat preservation effect.
[0035] In the embodiment, the edge length of rectangular stepped groove 101 is matched with the edge length of cover plate 3, and the depth of rectangular stepped groove 101 is equal to the thickness of cover plate 3, which facilitates the embedding of cover plate 3 in rectangular stepped groove 101.
[0036] In this embodiment, the square metal sheet 303 is made of stainless steel material that can be magnetically adsorbed, so that the magnetic block 102 can adsorb the square metal sheet 303, and the stability of the cover plate 3 covering in the handbag body 1 is ensured.
[0037] In this embodiment, the handbag body 1 and the cover plate 3 include a tin paper layer 4, a heat insulation layer 5, a hard plastic layer 6 and a nylon cloth layer 7, and the handbag body 1 and the cover plate 3 are respectively provided with the tin paper layer 4, the heat insulation layer 5, the hard plastic layer 6 and the nylon cloth layer 7 from inside to outside and from bottom to top.
[0038] In this embodiment, the heat insulation layer 5 is made of pearl cotton material, and the pearl cotton has good heat preservation effect.
[0039] The tin paper layer 4 can increase the high temperature resistance of the handbag body 1, the heat insulation layer 5 can increase the heat preservation performance of the handbag body 1, the hard plastic layer 6 can ensure that the shape of the handbag body 1 is not easy to deform, and the nylon cloth layer 7 can increase the appearance and wear resistance of the handbag body 1.
[0040] In this embodiment, the right side surface of the cover plate 3 is provided with a square groove 304 matching the square metal sheet 303, and the end of the pull cloth tape 302 is attached to the bottom surface and the side surface of the square groove 304.
[0041] In this embodiment, the square metal sheet 303 is fixedly adhered in the square groove 304 by the fixing glue, and the pull cloth tape 302 is pressed and held, so that the stability of the connection between the pull cloth tape 302 and the cover plate 3 is ensured.
[0042] The pull cloth tape 302 is provided, when the cover plate 3 needs to be opened, the cover plate 3 is pulled by the pull cloth tape 302, so that the cover plate 3 rotates along the handbag body 1 through the connecting cloth tape 301, the opening effect of the cover plate 3 is realized, the operation is simple and convenient, the end of the pull cloth tape 302 is attached to the bottom surface and the side surface of the square groove 304, the end of the pull cloth tape 302 is pressed and held by the square metal sheet 303, the stability of the connection between the pull cloth tape 302 and the cover plate 3 is ensured, and the service life is increased.
[0043] In this embodiment, the connection between the handle 2 and the handbag body 1 is provided with a reinforcing sheet 201, the reinforcing sheet 201 is integrally formed with the handle 2, and the reinforcing sheet 201 is sewn on the surface of the handbag body 1.
[0044] The reinforcing sheet 201 can increase the contact area of the connection between the handle 2 and the handbag body 1, and increase the stability of the connection between the handle 2 and the handbag body 1.
[0045] The above is only the preferred embodiment of the present application, and it should be pointed out that, for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application.
Claims
1. A lunchbox insulated carrying bag with good heat preservation effect, characterized in that: The bag includes a handbag body (1), handles (2), and a cover (3). Handles (2) are fixedly provided on both the inner and outer surfaces of the handbag body (1). A connecting strip (301) is sewn onto the right side of the upper surface of the handbag body (1). A cover (3) is sewn onto the connecting strip (301). A pull strip (302) is sewn onto the left end of the cover (3). A rectangular stepped groove (101) is provided on the upper inner side of the handbag body (1). Multiple magnetic blocks (102) are embedded at equal intervals on the bottom inner side of the rectangular stepped groove (101). A square metal sheet (303) is embedded around the bottom surface of the cover (3).
2. The insulated lunchbox bag with good heat preservation effect according to claim 1, characterized in that: The handbag body (1) is a rectangular box with an opening at the top, and the internal side length of the handbag body (1) is equal to the side length of the lunch box that needs to be kept warm.
3. The insulated lunchbox carrying bag with good heat preservation effect according to claim 2, characterized in that: The side length of the rectangular stepped groove (101) matches the side length of the cover plate (3), and the depth of the rectangular stepped groove (101) is equal to the thickness of the cover plate (3).
4. The insulated lunchbox carrying bag with good heat preservation effect according to claim 3, characterized in that: The square-shaped metal sheet (303) is made of stainless steel that can be magnetically attracted.
5. The insulated lunchbox carrying bag with good heat preservation effect according to claim 1, characterized in that: The handbag body (1) and cover plate (3) include a foil layer (4), a heat insulation layer (5), a rigid plastic layer (6) and a nylon cloth layer (7). The handbag body (1) is provided with a foil layer (4) from the inside out and the cover plate (3) is provided with a nylon cloth layer (7) from the bottom up.
6. The insulated lunchbox carrying bag with good heat preservation effect according to claim 5, characterized in that: The heat insulation layer (5) is made of pearl cotton.
7. The insulated lunchbox carrying bag with good heat preservation effect according to claim 1, characterized in that: The right side surface of the cover plate (3) is provided with a square groove (304) that matches the square metal sheet (303), and the end of the pull cloth strip (302) is attached to the bottom and side of the square groove (304).
8. The insulated lunchbox carrying bag with good heat preservation effect according to claim 7, characterized in that: The square metal sheet (303) is fixedly adhered to the square groove (304) by adhesive and presses the stretch fabric (302).
9. The insulated lunchbox bag with good heat preservation effect according to claim 1, characterized in that: A reinforcing piece (201) is provided at the connection between the handle (2) and the handbag body (1). The reinforcing piece (201) is integrally formed with the handle (2) and is sewn onto the surface of the handbag body (1).