CN218942492U

CN218942492U - Vacuum insulation box cover and vacuum insulation cutlery box

Info

Publication number: CN218942492U
Application number: CN202222976558.6U
Authority: CN
Inventors: 李立新; 周勇宁
Original assignee: Ningbo Lisi Commodity Co ltd
Current assignee: Ningbo Lisi Commodity Co ltd
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-05-02
Anticipated expiration: 2032-11-09

Abstract

The utility model provides a vacuum insulation box cover and a vacuum insulation cutlery box, which belong to the technical field of insulation cutlery boxes and comprise the following components: a box cover body; the frame-shaped support is connected with the box cover body and is provided with at least one rotatable buckling lug which is provided with an air hole plug; the sealing ring is connected with the box cover body and is provided with an exhaust hole for communicating the inside and the outside of the box body; when the buckling lugs are buckled, the air hole plug is in interference fit with the air hole so as to block the air hole; when the buckling lugs are turned over, the air hole plugs are separated from the air exhaust holes, so that the air exhaust holes are unblocked. The beneficial effects of the utility model are as follows: the vent hole is formed in the sealing ring, so that the vent hole can be provided for the box cover which cannot be perforated, the vent hole is blocked through the vent hole plug when the lug is buckled, the locking of the box cover body and the box body can be released when the box cover is opened, and the vent hole plug can be pulled out to balance the negative pressure in the box body through the vent hole.

Description

Vacuum insulation box cover and vacuum insulation cutlery box

Technical Field

The utility model belongs to the technical field of thermal insulation cutlery boxes, and relates to a vacuum thermal insulation box cover and a vacuum thermal insulation cutlery box.

Background

The cutlery box is very common articles for daily use, and many students, people who work and people who go out can carry meal with the cutlery box, and the thermal insulation is one of the important performances of cutlery box, and the better the thermal insulation, the better the thermal insulation effect of cutlery box.

For example, an utility model patent with application number CN201310461219.7 discloses a heat preservation lunch box, which forms a sealing structure with a box body through a sealing ring on a box cover, when food filled with heat is cooled or heated and cooled, the inside of the box is in a negative pressure state, and when the lunch box is opened, it is very difficult to arrange independent air holes, although the pressure difference can be balanced to be convenient for opening the box cover, the sealing performance of the heat preservation lunch box can be influenced, and if the box cover is not suitable for punching, the air exhausting function can be lost, so that the heat preservation lunch box has a certain improvement space.

Disclosure of Invention

The utility model aims to solve the problems in the prior art, and provides a vacuum insulation lunch box cover and a vacuum insulation lunch box.

The aim of the utility model can be achieved by the following technical scheme: a vacuum insulation box cover, comprising:

a box cover body;

the box cover comprises a box-shaped bracket, a box cover body and a box cover, wherein the box-shaped bracket is connected with the box cover body and is provided with at least one rotatable buckling lug, and the buckling lug is provided with an air hole plug;

the sealing ring is connected with the box cover body and is provided with an exhaust hole for communicating the inside and the outside of the box body;

when the buckling lugs are buckled, the air hole plug is in interference fit with the air vent hole so as to block the air vent hole; when the buckling lugs are turned over, the air hole plug is separated from the air exhaust hole, so that the air exhaust hole is unblocked.

Preferably, the box cover body is arranged to be of a hollow structure, and the inside of the box cover body is vacuumized to form a vacuum cavity.

Preferably, the box cover body comprises a first sheet and a second sheet which are formed through stamping, the first sheet and the second sheet are folded and connected through welding, and the vacuum cavity is located between the first sheet and the second sheet.

Preferably, a circle of step part with a Z-shaped cross section is arranged at the edge position of the lower surface of the box cover body, and the sealing ring is sleeved on the step part and is clamped by the step part.

Preferably, the frame-shaped support is provided with a fastening block, the frame-shaped support is mounted on the upper surface of the box cover body, and the fastening block is fastened with the edge of the lower surface of the box cover body so that the frame-shaped support is fixed with the box cover body.

Preferably, the upper surface of lid body is provided with the decoration recess, have the air pocket that is used for the evacuation in the decoration recess, be provided with the decorative piece in the decoration recess, and the decorative piece covers the air pocket.

Preferably, the vent hole laterally penetrates through the sealing ring, and two ends of the vent hole are respectively located on the outer side face and the inner side face of the sealing ring.

Preferably, the sealing ring is arranged as a lip-inwards lip-shaped sealing ring.

The vacuum insulation lunch box comprises a box body, and is characterized in that the vacuum insulation lunch box further comprises a box body, wherein when the vacuum insulation box cover is connected with the box body, the box cover body is connected with the box body through a sealing ring, and the buckling lugs are buckled with the box body.

Preferably, the box body is arranged into a double-layer metal structure, and a vacuum cavity formed by vacuumizing is arranged between the double-layer metals of the box body.

Compared with the prior art, the utility model has the beneficial effects that:

1. the vent hole is formed in the sealing ring, so that the vent hole can be venting, the vent hole can be venting for some box covers which cannot be perforated, the box body can be buckled when the lugs are buckled, the box cover body and the box body are connected together to form a sealed heat-insulating structure, the vent hole can be plugged through the vent hole plug, the buckling lug can be opened when the box cover is opened, the locking of the box cover body and the box body can be relieved, and the vent hole plug can be pulled out, so that the negative pressure in the box body is balanced through the vent hole.

2. The box cover body is of a hollow structure, and the vacuum cavity is formed after the vacuum pumping treatment of the cavity in the box cover body, so that the vacuum insulation effect can be achieved due to the fact that the vacuum cavity is formed in the box cover body, heat loss is blocked by the vacuum cavity, and the insulation effect of the box cover body is greatly improved.

3. In order to provide the inner vacuum box cover body, the two sheets are manufactured separately, then welded together and finally vacuumized, so that the box cover body with the vacuum cavity is manufactured.

4. The frame-shaped support and the box cover body are arranged to be of a detachable structure, so that the box cover body can be conveniently detached.

5. The box body has an inner layer structure and an outer layer structure, namely a double-layer metal structure, so that a vacuum inner cavity is formed in the double-layer metal structure, and the vacuum inner cavity and the vacuum cavity are similar in effect, and the heat preservation effect is realized through the vacuum structure.

6. The box body and the box cover body are in fact of all-metal structures, and the whole cutlery box keeps warm through the vacuum structure, so that the cutlery box has very strong heat preservation effect.

7. The scheme that the box cover body is arranged into a hollow structure and is internally provided with a vacuum cavity is tightly combined with the scheme that the sealing ring is provided with an exhaust hole and is sealed through an air hole plug, and belongs to a complete technical scheme; based on the above reasons, set up the exhaust hole on the sealing washer and set up the effect of hole stopper when not only can realizing the lid and open the time automatic balance negative pressure on detaining the ear, can also let the exhaust hole avoid the lid body, need not to set up the exhaust hole and just can exhaust on the lid body, compromise the structural integrity and the exhaust demand of lid body, overall structure is very ingenious for this lid has compatible vacuum insulation and the advantage of automatic exhaust balance negative pressure.

Drawings

Fig. 1 is a schematic structural view of the vacuum insulation lunch box of the present utility model.

Fig. 2 is an exploded view of the structure of the vacuum insulation lunch box of the present utility model.

Fig. 3 is a schematic structural view of a seal ring and a fastening lug according to the present utility model.

Fig. 4 is a schematic structural view of the vacuum insulation box cover of the present utility model.

Fig. 5 is a schematic structural view of the vacuum insulation box cover according to the present utility model when the vacuum insulation box cover is fastened.

Fig. 6 is a schematic view of the structure of the vacuum insulation box cover of the present utility model when it is opened.

Fig. 7 is a schematic structural view of the lid body of the present utility model.

Fig. 8 is a schematic view of a first sheet and a second sheet of the present utility model prior to welding.

100, a box cover body; 110. a vacuum chamber; 120. a first sheet; 130. a second sheet; 140. a decorative groove; 150. air pockets; 160. a decorative sheet; 170. a step portion; 200. a frame-shaped bracket; 210. a buckling block; 300. buckling lugs; 310. an air hole plug; 400. a seal ring; 410. an exhaust hole; 500. a case body; 510. a vacuum lumen.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1 to 8, a vacuum insulation box cover comprises: the box cover comprises a box cover body 100, a frame-shaped bracket 200 and a sealing ring 400, wherein the frame-shaped bracket 200 is connected with the box cover body 100, the frame-shaped bracket 200 is provided with at least one rotatable buckling lug 300, and the buckling lug 300 is provided with an air hole plug 310; the sealing ring 400 is connected with the box cover body 100, and the sealing ring 400 is provided with an exhaust hole 410 for communicating the inside and the outside of the box body 500; the air hole stopper 310 is interference-fitted with the air vent 410 when the button tab 300 is fastened so as to block the air vent 410; the air hole stopper 310 is separated from the air vent hole 410 when the button 300 is turned open, thereby leaving the air vent hole 410 clear.

The frame-shaped bracket 200 can be assembled on the box cover body 100, and the purpose of the frame-shaped bracket 200 is to provide a buckling ear structure for the box cover body 100, wherein the buckling ear 300 is connected with the frame-shaped bracket 200 through a hinge structure or a weak point, so that the buckling ear 300 can rotate relative to the frame-shaped bracket 200, and further the buckling ear 300 realizes a turning-open action (upward rotation) or a buckling action (downward rotation); the sealing ring 400 is fixed on the lower surface of the box cover body 100, and when the box cover body 100 is covered on the box body 500, the sealing ring 400 contacts with the box body 500 and ensures the sealing between the box cover body 100 and the box body 500.

Based on the basic structure, the vent hole 410 is formed in the sealing ring 400, and the air hole plug 310 is arranged on the buckling lug 300, so that the connection and separation of the air hole plug 310 and the vent hole 410 can be realized by the opening action and the buckling action of the buckling lug 300.

It should be noted that, the vent hole 410 formed on the sealing ring 400 can perform a venting function, and can provide a venting function for some box covers that cannot be perforated.

When the buckling lug 300 is buckled, the box body 500 can be buckled, so that the box cover body 100 and the box body 500 are connected together to form a sealed heat-insulating structure, the vent hole 410 can be plugged through the air hole plug 310, when the box cover is opened, the buckling lug 300 is turned over, the locking of the box cover body 100 and the box body 500 can be released, and the air hole plug 310 can be pulled out, so that the negative pressure in the box body 500 is balanced through the vent hole 410.

As shown in fig. 1, 2, and 5 to 8, the cap body 100 is provided in a hollow structure, and the inside of the cap body 100 forms a vacuum chamber 110 by vacuum pumping.

Unlike the existing box cover structure, the box cover body 100 in this embodiment is preferably a metal piece, where the box cover body 100 is of a hollow structure, and the vacuum cavity 110 is formed after the cavity inside the box cover body 100 is vacuumized, so that the effect of isolating heat transfer can be achieved, heat loss is blocked by using the vacuum cavity 110, and the heat insulation effect of the box cover body 100 is greatly improved.

It should be emphasized that the scheme that the box cover body 100 is provided with the hollow structure and the vacuum cavity 110 is arranged in the box cover body and the scheme that the vent hole 410 is arranged on the sealing ring 400 and the sealing is performed through the vent hole plug 310 are tightly combined together, belongs to a complete technical scheme, and because the box cover body 100 is of a double-layer sealed hollow shell structure, the inside of the box cover body 100 needs to be kept sealed, otherwise, the vacuum effect of the vacuum cavity 110 cannot be ensured, if the box cover body 100 or the box body 500 is provided with the vent hole, the heat dissipation path can be increased, so that the heat preservation effect is reduced, and particularly, if the vent hole is increased, heat can be dissipated from a metal part at the vent hole through heat conduction; based on the above reasons, set up exhaust hole 410 on sealing washer 400 and set up the effect of automatic balance negative pressure when detaining the ear 300 and not only can realize that the lid is opened, can also let exhaust hole 410 avoid lid body 100, need not to set up exhaust hole 410 and just can exhaust on lid body 100, compromise the structural integrity and the exhaust demand of lid body 100, overall structure is very ingenious for this lid has compatible vacuum insulation and the advantage of automatic exhaust balance negative pressure.

Preferably, the lid body 100 includes a first sheet 120 and a second sheet 130 that are formed by punching, the first sheet 120 and the second sheet 130 are folded and connected by welding, and the vacuum cavity 110 is located between the first sheet 120 and the second sheet 130.

In order to provide the inner vacuum of the lid body 100, in this embodiment, two sheets are manufactured separately, then welded together, and finally vacuumized, so as to manufacture the lid body 100 with the vacuum cavity 110, because the lid body 100 is actually a double-layer metal shell structure, and the integral hollow lid structure cannot be directly manufactured.

Specifically, the two metal sheets are formed into a shape through a stamping forming process, namely, the first sheet 120 and the second sheet 130 are manufactured, then the first sheet 120 and the second sheet 130 are folded, a hollow structure is formed between the first sheet 120 and the second sheet 130, then the first sheet 120 and the second sheet 130 are fixed together through welding, so that a box cover body 100 is formed, and then air between the first sheet 120 and the second sheet 130 is pumped away through vacuumizing, so that a sealed vacuum cavity 110 is formed between the two.

Preferably, the first sheet 120 and the second sheet 130 are disposed vertically in correspondence with each other, and a welding position of the first sheet 120 and the second sheet 130 is located on the outer circumferential surface of the cap body 100. In a practical structure, the first sheet 120 and the second sheet 130 are two sheet structures, edges of the two sheet structures are folded, the first sheet 120 forms the upper surface of the lid body 100, and the second sheet 130 forms the lower surface of the lid body 100, so that welding is convenient, and the formed lid body 100 has an attractive and smooth surface.

Preferably, a circle of step portion 170 with a zigzag cross section is provided at the edge of the lower surface of the lid body 100, and the sealing ring 400 is sleeved on the step portion 170 and is clamped by the step portion 170, so that the sealing ring 400 is not easy to fall off.

As shown in fig. 1 to 4, the frame-shaped bracket 200 is provided with a fastening block 210, the frame-shaped bracket 200 is mounted on the upper surface of the box cover body 100, and the fastening block 210 is fastened to the edge of the lower surface of the box cover body 100 so that the frame-shaped bracket 200 is fixed to the box cover body 100.

The frame-shaped support 200 and the box cover body 100 are arranged to be of a detachable structure, so that the box cover body 100 is convenient to detach, in the practical structure, the buckling block 210 is similar to the structure of a spring claw, the inner side face of the buckling block 210 is provided with a convex rib, the convex rib can buckle the edge of the lower surface of the box cover body 100, when the box cover is detached, the buckling block 210 is pulled outwards, then the frame-shaped support 200 can be taken out upwards, and when the box cover is installed, only the frame-shaped support 200 is needed to be assembled from top to bottom, and the convex rib of the buckling block 210 is to buckle the edge of the lower surface of the box cover body 100.

As shown in fig. 1 and 2, the upper surface of the lid body 100 is provided with a decorative groove 140, the decorative groove 140 has an air pocket 150 therein for vacuum pumping, the decorative groove 140 is provided with a decorative sheet 160 therein, and the decorative sheet 160 shields the air pocket 150.

Here, since the lid body 100 is required to form the vacuum chamber 110 inside by the vacuum process, and the air pocket 150 is a structure that must exist by the vacuum process, the lid body 100 in this embodiment cannot be obtained without the air pocket 150, but the air pocket 150 presents a concave structure in appearance, and the air pocket 150 is specially disposed in the decorative groove 140 for the aesthetic appearance of the lid as a whole, and then the air pocket 150 is shielded by the decorative sheet 160.

As shown in fig. 1 to 6, the vent hole 410 penetrates the sealing ring 400 laterally, and both ends of the vent hole 410 are located at the outer side surface and the inner side surface of the sealing ring 400, respectively. It should be noted that, the vent hole 410 is a side hole structure, when the box cover body 100 covers the box body 500, the inner side surface of the sealing ring 400 is located in the box body 500, the outer side surface of the sealing ring 400 is located outside the box body 500, the box body 500 is communicated with the outside through the side hole-shaped vent hole 410 to balance the negative pressure, and the vent hole 410 is arranged into a side hole shape to match with the movement track of the air hole plug 310, when the fastening lug 300 is fastened, the air hole plug 310 is inserted into the vent hole 410 along the lateral direction from the outer side surface of the sealing ring 400, so that the air hole plug 310 can better block the vent hole 410.

Preferably, the sealing ring 400 is configured as a lip-inward lip-shaped sealing ring 400, and since the sealing ring 400 seals between the lid body 100 and the case 500, when the air plug 310 is inserted into the air vent 410, the sealing ring 400 is caused to locally expand and deform, and a more powerful sealing effect is generated between the lid body 100 and the case 500; in addition, the effect of the air hole stopper 310 sealing the air hole 410 can be improved, and since the air hole stopper 310 is larger than the air hole 410, the air hole 410 can be forced to deform when the air hole stopper 310 is inserted into the air hole 410 so that the air hole and the air hole are in interference fit, and thus the air hole 410 can be completely sealed.

Preferably, the latch 300 is further provided with a locking block for locking with the case 500, and the locking block can lock the case 500 when the latch 300 is locked.

As shown in fig. 1-8, a vacuum insulation lunch box is further provided, which comprises a vacuum insulation box cover and a box body 500, wherein when the vacuum insulation box cover is connected with the box body 500, the box cover body 100 is connected with the box body 500 through a sealing ring 400, and the buckling lugs 300 are buckled with the box body 500 through a buckling block.

In an actual configuration, the case 500 has a relief portion at a position corresponding to the vent hole 410, and interference between the case 500 and the air hole plug 310 is avoided when the air hole plug 310 is inserted into the vent hole 410.

Preferably, the case 500 is provided in a double-layered metal structure, and a vacuum cavity 510 formed by vacuum pumping is provided between the double-layered metals of the case 500.

In this embodiment, the box 500 is a metal box 500, and the box 500 has a vacuum insulation effect, and the structure principle of vacuum insulation of the box 500 is similar to that of the box cover body 100, specifically, the box 500 has an inner-outer double-layer structure, i.e. a double-layer metal structure, so that a vacuum inner cavity 510 is formed in the double-layer metal, and the vacuum inner cavity 510 has a similar effect to that of the vacuum cavity 110, and the insulation effect is realized through the vacuum structure.

It should be noted that, the box body 500 and the box cover body 100 in the present embodiment are all metal structures in practice, and the whole cutlery box keeps warm through the vacuum structure, so the cutlery box has very strong thermal insulation effect.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, descriptions such as those referred to herein as "first," "second," "a," and the like are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or an implicit indication of the number of features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise.

In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.

Claims

1. A vacuum insulation box cover, comprising:

a lid body (100);

the box cover comprises a box-shaped bracket (200), wherein the box-shaped bracket (200) is connected with a box cover body (100), the box-shaped bracket (200) is provided with at least one rotatable buckling lug (300), and the buckling lug (300) is provided with an air hole plug (310);

the sealing ring (400), the sealing ring (400) is connected with the box cover body (100), and the sealing ring (400) is provided with an exhaust hole (410) for communicating the inside and the outside of the box body (500);

the air hole plug (310) is in interference fit with the air vent hole (410) when the buckling lug (300) is buckled so as to block the air vent hole (410); the air hole stopper (310) is separated from the air vent hole (410) when the button lug (300) is turned open so as to unblock the air vent hole (410).

2. A vacuum insulation pack cover as claimed in claim 1, wherein: the box cover body (100) is arranged to be of a hollow structure, and the inside of the box cover body (100) is vacuumized to form a vacuum cavity (110).

3. A vacuum insulation pack cover as claimed in claim 2, wherein: the box cover body (100) comprises a first sheet (120) and a second sheet (130) which are formed through stamping, wherein the first sheet (120) and the second sheet (130) are folded and connected through welding, and the vacuum cavity (110) is located between the first sheet (120) and the second sheet (130).

4. A vacuum insulation pack according to claim 3, wherein: the edge of the lower surface of the box cover body (100) is provided with a circle of step part (170) with a Z-shaped cross section, and the sealing ring (400) is sleeved on the step part (170) and is clamped by the step part (170).

5. A vacuum insulation pack cover as claimed in claim 1, wherein: the frame-shaped support (200) is provided with a buckling block (210), the frame-shaped support (200) is mounted on the upper surface of the box cover body (100), and the buckling block (210) is buckled with the edge of the lower surface of the box cover body (100) so that the frame-shaped support (200) is fixed with the box cover body (100).

6. A vacuum insulation pack according to claim 3, wherein: the upper surface of lid body (100) is provided with decorative groove (140), have in decorative groove (140) and be used for evacuating air pocket (150), be provided with decorative piece (160) in decorative groove (140), and decorative piece (160) shelter from air pocket (150).

7. A vacuum insulation pack cover as claimed in claim 1, wherein: the exhaust hole (410) laterally penetrates through the sealing ring (400), and two ends of the exhaust hole (410) are respectively positioned on the outer side face and the inner side face of the sealing ring (400).

8. The vacuum insulation pack cover as claimed in claim 7, wherein: the sealing ring (400) is arranged as a lip-inward lip-shaped sealing ring (400).

9. A vacuum insulation cutlery box, characterized by comprising the vacuum insulation box cover according to any one of claims 1 to 8, and further comprising a box body (500), wherein when the vacuum insulation box cover is connected with the box body (500), the box cover body (100) is connected with the box body (500) through a sealing ring (400), and a buckling lug (300) is buckled with the box body (500).

10. The vacuum insulation cutlery box of claim 9, wherein: the box body (500) is arranged into a double-layer metal structure, and a vacuum inner cavity (510) formed by vacuumizing is arranged between the double-layer metals of the box body (500).