AUTOMATIC AIR-RELEASE BOX LID AND PRESERVATION BOX

Abstract

Provided is an automatic air-release box lid, including: a box lid body provided with an air hole, the air hole being configured as a through-hole structure, openings at two ends of the air hole being located on an upper surface and a lower surface of the box lid body respectively; and a fastening lug having a rotating shaft part by which the fastening lug is hinged to the upper surface of the box lid body, the rotating shaft part and one opening of the air hole being arranged corresponding to each other and one above the other, the rotating shaft part having a blocking surface. Further provided is a preservation box, including: an automatic air-release box lid and a box body. The box lid is fitted to cover the box body.

Description

BACKGROUND OF THE INVENTION

1. Technical Field

This disclosure belongs to the technical field of food preservation boxes and relates to an automatic air-release box lid and a preservation box.

2. Description of Related Art

At present, a traditional preservation box usually achieves sealing by virtue of a seal ring between a box lid and a box body. Since the preservation box generally have a sealed space inside, when hot food is placed in the box, the air in the box expands and becomes thin. After the food cools, the air inside will contract to form a low pressure, the box lid is sucked tightly and it is difficult to open the box lid. In this case, it is required to arrange an air hole to balance the pressure difference between the inside and the outside, so that the box lid can be opened easily.

For example, a utility model patent application No. CN201520753408.6 discloses a preservation box, including a container body and a box lid matched and engaged with the container body. The box lid is provided with an air release hole, and an air release valve that can open and close the air release hole is mounted on the air release hole. The air release valve includes an air release contact shaft and an air release valve lip that are mounted in the air release hole. A peripheral surface of the air release contact shaft is provided with at least one air release groove that runs through two opposite ends of the air release contact shaft. The air release valve lip and a top surface of the box lid together form a closed space covering the air release contact shaft. The air release groove communicates the closed space with the container body.

Since the above-mentioned preservation box is set with an air release valve and the air release valve needs to be operation additionally to open or close the box lid, it is very troublesome to use the preservation box.

BRIEF SUMMARY OF THE INVENTION

An objective of this disclosure is directed to the problems existing in the prior art and provides an automatic air-release box lid and a preservation box.

The objective of this disclosure can be achieved through the following technical solution: a box lid, including:

• • a box lid body, the box lid body being provided with an air hole, the air hole being configured as a through-hole structure, one opening of the air hole being located on an upper surface of the box lid body and the other opening being located on a lower surface of the box lid body; and
  • a fastening lug, the fastening lug having a rotating shaft part by which the fastening lug is hinged to the upper surface of the box lid body, the rotating shaft part and one opening of the air hole being arranged corresponding to each other and one above the other, the rotating shaft part having a blocking surface, the fastening lug being rotatable to a fastened position and an open position; wherein
  • when the fastening lug is at the fastened position, the blocking surface blocks the opening of the air hole; and when the fastening lug is at the open position, the blocking surface is separated from the opening of the air hole to unblock the air hole.

Preferably, the upper surface of the box lid body is provided with a recessed hinge groove near its edge, one opening of the air hole is located at a bottom surface of the hinge groove, and the rotating shaft part is rotatably arranged in the hinge groove.

Preferably, two side walls of the hinge groove are each provided with a shaft hole, and two ends of the rotating shaft part are connected to the two shaft holes respectively.

Preferably, the rotating shaft part is provided with an air guide groove along its radial direction, and the air guide groove comes into butt joint with the air hole when the fastening lug is at the open position.

Preferably, the air hole is internally provided with a hole-purposed sealing gasket.

Preferably, the fastening lug is provided with a fastening block.

Preferably, an annular seal ring is arranged on the lower surface of the box lid body.

Further disclosed is a preservation box, including: an automatic air-release box lid and further including a box body, wherein the automatic air-release box lid is fitted to cover the box body; when the fastening lug of the automatic air-release box lid is rotated to the fastened position, the box body is fastened by the fastening lug so that the automatic air-release box lid is fixedly connected to the box body, and when the fastening lug is rotated to the open position, the automatic air-release box lid is separated from the box body.

Compared with the prior art, this disclosure has the following beneficial effects:

• • 1. The opening and closing of the air hole is cleverly combined with the action of the fastening lug. When the air hole is automatically opened when the fastening lug is opened, and the air hole is automatically closed after the fastening lug is snapped shut, which is very convenient in use.
  • 2. The air hole extends downward from the bottom surface of the hinge groove and runs through the box lid body, and the rotating shaft part is arranged in the hinge groove and located above the air hole so as to block the air hole when the box lid is closed.
  • 3. The hole-purposed sealing gasket is arranged inside the air hole and its upper end extends out of the air hole, thus forming a circle of sealing gasket structure around the upper opening of the air hole. When the fastening lug is rotated to the fastened position, the blocking surface exactly presses the hole-purposed sealing gasket, thus completely sealing the upper opening of the air hole.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

FIG. 1 is a schematic diagram of a box lid according to this disclosure in a state where a fastening lug is at a fastened position.

FIG. 2 is a schematic diagram of the box lid according to this disclosure in a state where the fastening lug is at an open position.

FIG. 3 shows an enlarged schematic diagram of part A in FIG. 1.

FIG. 4 is a schematic structural diagram of the fastening lug according to this disclosure.

FIG. 5 is a structural diagram of a box lid body according to this disclosure.

FIG. 6 is a schematic structural diagram of a preservation box according to this disclosure.

In the figures, 100, box lid body; 110, air hole; 120, hinge groove; 130, shaft hole; 140, hole-purposed sealing gasket; 150, seal ring; 200, fastening lug; 210, fastening block; 300, rotating shaft part; 310, blocking surface; 320, air guide groove; and 400, box body.

DETAILED DESCRIPTION OF THE INVENTION

The following is specific embodiments of this disclosure and further describes the technical solution of this disclosure with reference to the drawings, but this disclosure is not limited to these embodiments.

As shown in FIGS. 1 to 6, provided is an automatic air-release box lid, including: a box lid body 100 and a fastening lug 200. The box lid body 100 is provided with an air hole 110, and the air hole 110 is configured as a through-hole structure. One opening of the air hole 110 is located on an upper surface of the box lid body 100 and the other opening is located on a lower surface of the box lid body 100. The fastening lug 200 has a rotating shaft part 300 by which the fastening lug 200 is hinged to the upper surface of the box lid body 100. The rotating shaft part 300 and one opening of the air hole 110 are arranged corresponding to each other and one above the other. The rotating shaft part 300 has a blocking surface 310. The fastening lug 200 can be rotated to a fastened position and an open position. When the fastening lug 200 is at the fastened position, the blocking surface 310 blocks the opening of the air hole 110. When the fastening lug 200 is at the open position, the blocking surface 310 is separated from the opening of the air hole 110 to unblock the air hole 110.

The box lid body 100 is provided with the air hole 110 near its edge. The upper opening of the air hole 110 is located on the upper surface of the box lid body 100 and the lower opening of the air hole 110 is located on the lower surface of the box lid body 100. The air hole 110 is arranged in correspondence with the rotating shaft part 300. The upper opening of the air hole 110 is located below the rotating shaft part 300. The surface of the rotating shaft part 300 has a relatively protruding blocking surface 310. The fastening lug 200 is rotated by the rotating shaft part 300.

It should be noted that the fastened position refers to the position where the fastening lug 200 is located when the box body 400 is fastened by the fastening lug 200. The open position refers to the position where the fastening lug 200 is located after it is flipped outward from the fastened position, and in short, any position where the fastening lug 200 is located when the blocking surface 310 of the rotating shaft part 300 is separated from the air hole 110 can be the open position.

Specifically, when the fastening lug 200 is rotated to the fastened position, the fastening lug 200 can fasten the box body 400 so that the box lid body 100 is connected to the box body 400, and in this case the blocking surface 310 is facing the upper opening of the air hole 110, and the blocking surface 310 exactly blocks the upper opening so that the air hole 110 is sealed. When the fastening lug 200 is rotated to the open position, the blocking surface 310 is moved away from the upper opening of the air hole 110 so that the air hole 110 is opened.

The opening and closing of the air hole 110 in the box lid is cleverly combined with the action of the fastening lug 200. When the air hole 110 is automatically opened when the fastening lug 200 is opened, and the air hole 110 is automatically closed after the fastening lug 200 is snapped shut, which is very convenient in use.

As shown in FIGS. 1 to 5, the upper surface of the box lid body 100 is provided with a recessed hinge groove 120 near its edge, one opening of the air hole 110 is located at a bottom surface of the hinge groove 120, and the rotating shaft part 300 is rotatably arranged in the hinge groove 120. Specifically, the air hole 110 extends downward from the bottom surface of the hinge groove 120 and runs through the box lid body, and the rotating shaft part 300 is arranged in the hinge groove 120 and located above the air hole 110 so as to block the air hole 120 when the box lid is closed.

Preferably, two side walls of the hinge groove 120 are each provided with a shaft hole 130, and two ends of the rotating shaft part 300 are connected to the two shaft holes 130 respectively. In an actual structure, the rotating shaft part 300 is located at an end of the fastening lug 200, and the two sides of the rotating shaft part 300 are connected to the shaft holes 130 so that the rotating shaft part 300 is hinged in the hinge groove 120.

The rotating shaft part 300 is provided with an air guide groove 320 along its radial direction, and the air guide groove 320 comes into butt joint with the air hole 110 when the fastening lug 200 is at the open position.

The air guide groove 320 is actually a groove structure extending on the surface of the rotating shaft part 300 along the radial direction of the rotating shaft part 300. When the fastening lug 200 is in the open position, the air guide groove 320 is exactly aligned with the air hole 110, so as to unblock the air hole 110 and guide the air coming out of the air hole 110 to release along the air guide groove 320.

As shown in FIGS. 1, 2, 3 and 5, the air hole 110 is internally provided with a hole-purposed sealing gasket 140. The hole-purposed sealing gasket 140 is arranged inside the air hole 110 and its upper end extends out of the air hole 110, thus forming a circle of sealing gasket structure around the upper opening of the air hole 110. When the fastening lug 200 is rotated to the fastened position, the blocking surface 310 exactly presses the hole-purposed sealing gasket 140, thus completely sealing the upper opening of the air hole 110.

As shown in FIGS. 1 to 4, the fastening lug 200 is provided with a fastening block 210, and the fastening block 210 is configured to fasten the box body 400 when the fastening lug 200 is rotated to the fastened position.

Preferably, an annular seal ring 150 is arranged on the lower surface of the box lid body 100, and the box lid body 100 is sealed to the box body 400 by the annular seal ring 150.

As shown in FIGS. 1 to 6, disclosed is a preservation box, including: an automatic air-release box lid and further including the box body 400. The automatic air-release box lid is fitted to cover the box body 400. When the fastening lug 200 of the automatic air-release box lid is rotated to the fastened position, the box body 400 is fastened by the fastening lug 200 so that the automatic air-release box lid is fixedly connected to the box body 400, and when the fastening lug 200 is rotated to the open position, the automatic air-release box lid is separated from the box body 400.

In actual use, when the fastening lug 200 is in the fastened position, the blocking surface 310 blocks the upper opening of the air hole 110. If there is an air pressure difference between the inside of the box body 400 and the outside, after the fastening lug 200 is opened outward (i.e., in the open position), the blocking surface 310 is separated from the upper opening of the air hole 110 to unblock the air hole 110, and in this case the air pressure difference between the inside of the box body 400 and the outside can be balanced by the air hole 110.

It should be noted that all directional indications (such as up, down, left, right, front, back . . . ) in the embodiments of this disclosure are only used to explain a relative positional relationship, motion, etc. between the various components in a specific attitude (as shown in the accompanying drawings). If the specific attitude changes, the directional indications will also change accordingly.

In addition, descriptions such as “first”, “second”, “one”, etc. in this disclosure are only used for description purposes, and should not be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defined by the term “first” or “second” may include at least one of the features, either explicitly or implicitly. In the description of the present disclosure, the meaning of “a plurality of” is at least two, such as two, three, etc., unless specifically defined otherwise.

In this disclosure, unless otherwise expressly specified and defined, the terms “connected”, “fixed” and the like should be understood in a broad sense. For example, the connection may be either a fixed connection or a detachable connection, or in one piece; it may be a mechanical connection, or it may be an electrical connection; it may be a direct connection or indirect connection through an intermediate medium, and may be an internal communication of two components or an interaction relationship between two components, unless otherwise expressly defined. It will be apparent to those skilled in the art that the specific meanings of the above terms in this disclosure can be understood according to the specific conditions.

In addition, the technical solutions of the various embodiments of this disclosure can be combined with each other, but must be based on the implementation by those of ordinary skill in the art. When the combination of technical solutions contradicts each other or cannot be implemented, it should be considered that such combination of technical solutions does not exist and does not fall within the scope of this disclosure.

Claims

1. An automatic air-release box lid, comprising: a box lid body, the box lid body being provided with an air hole, the air hole being configured as a through-hole structure, one opening of the air hole being located on an upper surface of the box lid body and the other opening being located on a lower surface of the box lid body; anda fastening lug, the fastening lug having a rotating shaft part by which the fastening lug is hinged to the upper surface of the box lid body, the rotating shaft part and one opening of the air hole being arranged corresponding to each other and one above the other, the rotating shaft part having a blocking surface, the fastening lug being rotatable to a fastened position and an open position, whereinwhen the fastening lug is at the fastened position, the blocking surface blocks the opening of the air hole; andwhen the fastening lug is at the open position, the blocking surface is separated from the opening of the air hole to unblock the air hole.

2. The automatic air-release box lid according to claim 1, wherein the upper surface of the box lid body is provided with a recessed hinge groove near its edge, one opening of the air hole is located at a bottom surface of the hinge groove, and the rotating shaft part is rotatably arranged in the hinge groove.

3. The automatic air-release box lid according to claim 2, wherein two side walls of the hinge groove are each provided with a shaft hole, and two ends of the rotating shaft part are connected to the two shaft holes respectively.

4. The automatic air-release box lid according to claim 1, wherein the rotating shaft part is provided with an air guide groove along its radial direction, and the air guide groove comes into butt joint with the air hole when the fastening lug is at the open position.

5. The automatic air-release box lid according to claim 4, wherein the air hole is internally provided with a hole-purposed sealing gasket.

6. The automatic air-release box lid according to claim 1, wherein the fastening lug is provided with a fastening block.

7. The vacuum heat-preservation box lid according to claim 1, wherein an annular seal ring is arranged on the lower surface of the box lid body.

8. A preservation box, comprising: the automatic air-release box lid according to claim 1; anda box body, wherein the automatic air-release box lid is fitted to cover the box body;when the fastening lug of the automatic air-release box lid is rotated to the fastened position, the box body is fastened by the fastening lug so that the automatic air-release box lid is fixedly connected to the box body, and when the fastening lug is rotated to the open position, the automatic air-release box lid is separated from the box body.