Heat preservation lunch box convenient to seal

Abstract

The utility model relates to the technical field of heat preservation lunch boxes, in particular to a heat preservation lunch box convenient to seal, which comprises a heat preservation shell, an inner container is movably placed in the heat preservation shell, the upper end face of the inner container exceeds the heat preservation shell, and a cover body for sealing the heat preservation shell is fixed above the heat preservation shell through a locking device. A mounting groove is formed in the position, corresponding to the inner container, of the cover body, a sealing ring is arranged in the mounting groove, and the thickness of the sealing ring is smaller than the depth of the mounting groove. The electric cooker has the beneficial effects that when the electric cooker is used, meals are placed in the inner container, then the cover body is covered, the cover body is fixed through the locking device, the cover body and the heat preservation shell are fixed through pressure applied to the cover body by the locking device, and the sealing mode that the opening of the inner container and the sealing ring in the cover body are completely attached and extruded to achieve complete sealing is achieved; the lunch box can avoid food leakage in the carrying process, is easy to close and open, and is suitable for lunch boxes with different shapes and calibers.

Description

TECHNICAL FIELD

[0001] The utility model relates to a heat preservation lunch box technical field especially convenient to seal's heat preservation lunch box. BACKGROUND

[0002] The existing heat preservation lunch box is composed of a plastic heat preservation shell and an inner container, and there are three opening and sealing modes: one, negative pressure type, the elastic silica gel disc on the edge of the cover is attached to the inner wall of the inner container to discharge part of the air and achieve the sealing effect. The disadvantages of this mode are: 1. With the change of food temperature and state, the internal pressure will also change, and there is a risk of leakage of liquid food at any time. 2. Negative pressure needs to discharge part of the internal air, resulting in a smaller available capacity. 3. During the operation process, if the inner wall is sticky with food, etc., negative pressure cannot be formed, and the sealing effect cannot be achieved even with a foolproof operation. Two, screw type, the inner thread of the cover and the external thread on the outer plastic heat preservation layer of the bowl body are used to achieve locking and sealing. The disadvantages of this mode are: 1. The number of turns of the thread generally needs to be more than 3 to achieve the locking and sealing effect, and it is very time-consuming and laborious to open and close, and occasionally because of the food residues or sticky liquid on the thread, it is very difficult to open, like opening a can. 2. Due to the limitation of the size and strength of our ordinary hands, the external diameter of this type of lunch box cannot exceed about 12 centimeters, the caliber is limited, and the shape is also limited. 3. During the rotation process, the sealing strip inside the upper cover is affected by the friction force and may be deformed and displaced, which cannot achieve sealing. Three, slot type, the sliding block on the inner side of the cover and the protruding slot on the outer plastic heat preservation layer of the bowl body are used to achieve locking and sealing. The disadvantages of this mode are: 1. It cannot achieve complete sealing because the slot type is locked by a slope and finally limited by a protruding plastic point. This plastic point will be worn out after a few uses and cannot play a limiting role, which will become looser and finally cannot be used. 2. Due to the limitation of the size and strength of our ordinary hands, the external diameter of this type of lunch box cannot exceed about 12 centimeters, the caliber is limited, and the shape is also limited. 3. During the rotation process, the sealing strip inside the upper cover is affected by the friction force and may be deformed and displaced, which cannot achieve sealing. CONTENT OF THE UTILITY MODEL

[0003] The utility model is just to solve the above-mentioned problems and provide a heat preservation lunch box convenient to seal.

[0004] The technical scheme of the utility model is implemented as follows:

[0005] The utility model provides a heat -preserving lunch box of convenient sealing, including heat -preserving shell, the inner chamber is movably placed in the heat -preserving shell, the inner chamber upper end face exceeds the heat -preserving shell, the heat -preserving shell top utilizes locking device and is fixed with the cover that seals to it, the cover is formed with the mounting groove on the position corresponding the inner chamber, is provided with the sealing ring in the mounting groove, the thickness of sealing ring is less than the depth of mounting groove.

[0006] Further, the heat -preserving shell is cylindrical or square barrel shape.

[0007] Further, the heat -preserving shell and the inner chamber gap fit installation, the inner chamber of the inner chamber is straight cylinder type.

[0008] Further, the cover is rotatably installed with a handle on the cover through a pin shaft.

[0009] Further, the cover is formed with a step groove for hiding the handle.

[0010] Further, at least one set of locking devices is symmetrically installed on the outer side wall of the heat -preserving shell, and the locking device is any one of a rotating buckle, a magnetic attraction buckle, and an elastic band with a magic tape.

[0011] Further, when the cover is fixed on the heat -preserving shell by the locking device, the compression amount of the sealing ring is not less than 0.5mm.

[0012] The above technical scheme is adopted, and the beneficial effects of the utility model are as follows: during use, the food is placed in the inner chamber, then the cover is covered, and the cover is fixed by the locking device, the pressure applied to the cover by the locking device completes the fixation of the cover and the heat -preserving shell, the sealing ring in the inner chamber and the cover is completely attached and extruded to realize the completely sealed sealing mode, which can avoid food leakage during carrying, and the closed and opened operation is simple, and the lunch box is suitable for different shapes and diameters. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0014] Figure 1 It is the perspective view of the utility model;

[0015] Figure 2 It is the front view of the utility model;

[0016] Figure 3 It is the side view of the utility model;

[0017] Figure 4 is a sectional view of the utility model;

[0018] Figure 5 is a plan view of the utility model.

[0019] The reference signs are explained as follows:

[0020] 1, thermal insulation shell; 2, inner container; 3, locking device; 4, cover; 5, mounting groove; 6, sealing ring; 7, handle. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] As shown in Figures 1-5 A thermal insulation lunch box convenient to seal comprises a thermal insulation shell 1 with a size of no less than 12 cm, the thermal insulation shell 1 is made of plastic, is light in weight and low in cost, an inner container 2 is movably arranged in the thermal insulation shell 1, the inner container 2 can be made of glass, ceramic or stainless steel, is easy to form, the upper end face of the inner container 2 is 3 mm longer than the upper end face of the thermal insulation shell 1, the mouth of the inner container 2 is flat, the width of the mouth of the inner container 2 is 2 mm, a cover 4 for sealing is fixed to the thermal insulation shell 1 by a locking device 3, the cover 4 can be made of the same material as the thermal insulation shell 1, a mounting groove 5 is formed on the cover 4 corresponding to the position of the inner container 2, a sealing ring 6 is arranged in the mounting groove 5, the depth of the mounting groove 5 is 5 mm and the width is 2.2 mm, the sealing ring 6 is made of elastic silica gel, the thickness of the sealing ring 6 is 3 mm, the complete sealing of the mouth of the inner container 2 can be realized by the elasticity of the sealing ring 6 and the external pressure applied by the locking device 3, and the inner container 2 can bear a certain internal pressure, so that the operation is simple, fast, completely sealed and the effect is achieved, the material selection and preparation method of the plastic thermal insulation shell 1, the cover 4 and the sealing ring 6 are injection molding or extrusion molding process, which are very mature technologies, and the material selection and preparation method of the inner container 2 are also very mature technologies, so they are not described in detail.

[0023] In the embodiment, the thermal insulation shell 1 is cylindrical or square barrel-shaped, and is not limited by shape and external diameter.

[0024] In the embodiment, the thermal insulation shell 1 and the inner container 2 are installed in clearance fit, and the inner cavity of the inner container 2 is straight cylindrical, since the inner container 2 is movable, the inner container 2 is convenient to take out for cleaning, and is convenient to produce, process, assemble or replace after damage.

[0025] In the embodiment, the handle 7 is rotatably installed on the cover 4 by a pin shaft, so as to facilitate carrying of the large-size thermal lunch box.

[0026] In the embodiment, the stepped groove for hiding the handle 7 is formed on the cover 4, and the stepped groove can be formed on the outer edge or the middle end face of the cover 4. When the stepped groove is formed on the outer edge of the cover 4, the handle 7 is hidden outside the cover 4 after being rotated, and the handle 7 has a large design size. When the stepped groove is formed on the middle end face of the cover 4, the handle 7 is hidden inside the cover 4 after being rotated, and the handle 7 has a small design size.

[0027] In the embodiment, at least one set of locking devices 3 is symmetrically installed on the outer wall of the thermal shell 1, and the locking device 3 is any one of a rotary buckle, a magnetic buckle and an elastic band with a magic tape. The symmetrically installed locking devices 3 can ensure that the pressure applied to the cover 4 is balanced and the sealing effect is ensured. When the locking device 3 is in the form of a rotary buckle, the structure is as shown in Figure 4 In order to ensure the fixing firmness of the buckle, a limiting groove can be formed on the edge of the cover 4, and a wedge-shaped block is formed on the end of the clamping plate and can be clamped into the limiting groove. After the wedge-shaped block on the end of the clamping plate is clamped into the limiting groove, the fixing is completed. When the locking device is opened, the wedge-shaped block can be separated from the limiting groove after the cover 4 is pressed downward, so as to facilitate the rotation of the buckle and the separation of the cover 4.

[0028] In the embodiment, in order to ensure the sealing effect, when the cover 4 is fixed on the thermal shell 1 by the locking device 3, the compression amount of the sealing ring 6 after contacting the opening of the inner container 2 is not less than 0.5 mm.

[0029] The components not described in detail herein are prior art.

[0030] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An insulated lunch box that is easy to seal, characterized in that: The device includes an insulating outer shell (1), an inner liner (2) which is movably placed inside the insulating outer shell (1), the upper surface of the inner liner (2) extending beyond the insulating outer shell (1), and a cover (4) which is fixed above the insulating outer shell (1) by a locking device (3) to seal it. An installation groove (5) is formed on the cover (4) corresponding to the position of the inner liner (2), and a sealing ring (6) is provided in the installation groove (5). The thickness of the sealing ring (6) is less than the depth of the installation groove (5).

2. The insulated lunch box that is easy to seal according to claim 1, characterized in that: The heat-insulating outer shell (1) is cylindrical or square.

3. The insulated lunch box that is easy to seal according to claim 1, characterized in that: The heat-insulating outer shell (1) and the inner liner (2) are fitted together with a clearance, and the inner cavity of the inner liner (2) is cylindrical.

4. The insulated lunch box that is easy to seal according to claim 1, characterized in that: A handle (7) is rotatably mounted on the cover (4) via a pin.

5. A thermal lunch box that is easy to seal according to claim 4, characterized in that: The cover (4) has a stepped groove formed to conceal the handle (7).

6. The insulated lunch box that is easy to seal according to claim 1, characterized in that: At least one set of locking devices (3) are symmetrically installed on the outer wall of the heat-insulating shell (1). The locking device (3) is any one of a rotating buckle, a magnetic buckle, or an elastic band with Velcro.

7. The insulated lunch box that is easy to seal according to claim 1, characterized in that: When the cover (4) is fixed to the heat-insulating shell (1) by the locking device (3), the compression of the sealing ring (6) is not less than 0.5 mm.

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