A novel heat-insulating container and its production method

Abstract

The present invention discloses a novel heat preservation container and a production method thereof, comprising a cover, a main body, an opening and closing assembly and a sealing ring; the main body is provided with a storage space; the opening and closing assembly comprises an upper connecting member and a lower connecting member made of hard material, the upper connecting member is sealedly connected to the cover, and the lower connecting member is sealedly connected to the opening of the storage space; the upper connecting member and the lower connecting member are pivotally connected at the rear ends, and a switch mechanism is provided at the front ends of the two; the lower connecting member is provided with a through hole connected to the storage space, the upper connecting member is provided with a protrusion matching the through hole, and the sealing ring is sealedly matched between the through hole and the protrusion. The present invention uses hard materials to make the upper connecting member and the lower connecting member as the shape frame of the heat preservation container. In its production process, the shapes of the two are fixed, which is more convenient to assemble with the soft cover and main body. The production process is convenient and simple, and can improve production efficiency, product quality rate and sealing performance; the sealing is achieved between the protrusion and the side wall of the through hole by the sealing ring to ensure the sealing effect of the heat preservation container after assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of bags, and in particular to a novel heat-insulating container and a production method thereof. Background Art

[0002] Thermal containers are containers with thermal insulation properties. In daily life, thermal bags are more common, especially in areas such as takeout, medicine, scientific research, etc., where items need to be carried and kept warm. Compared with ordinary storage bags, thermal bags are made of special materials to achieve both thermal insulation and heat preservation, so that the body has a short-term thermal insulation effect, which is convenient for storing food, medicines, samples, etc., and provides a stable temperature environment to maintain the temperature and freshness of the above items.

[0003] Existing thermal insulation bags mainly use zippers as the opening and closing structure to achieve the opening and closing coordination between the cover and the box. The disadvantages of using zippers are: ① The zipper itself is a soft structure, which is difficult to shape during assembly operation, and it is difficult to assemble with the cover / box, which affects production efficiency and product quality rate; ② The zipper is fixed by the teeth on both sides biting each other, but the gap between the teeth is easy to cause air or liquid leakage, resulting in the product's sealing performance not meeting the use requirements. Summary of the invention

[0004] The object of the present invention is to provide a novel thermal insulation container and a production method thereof, so that the assembly process of the thermal insulation container is more convenient and simple, and the production efficiency, the quality rate of the product and the sealing performance are improved.

[0005] In order to achieve the above object, the solution of the present invention is:

[0006] A new type of heat-insulating container, comprising a cover, a body, an opening and closing assembly and a sealing ring; the body forms a storage space; the opening and closing assembly comprises an upper connecting member and a lower connecting member made of hard material, the upper connecting member is sealedly connected to the cover, and the lower connecting member is sealedly connected to the opening of the storage space; the upper connecting member and the lower connecting member are pivotally matched at the rear ends, and a switch mechanism is provided at the front ends of both; the lower connecting member is provided with a through hole connected to the storage space, the upper connecting member is provided with a protrusion matching the through hole, and the sealing ring is sealingly matched between the through hole and the protrusion.

[0007] The cover body includes a first outer liner, a first interlayer and a first inner liner which are stacked, the upper connecting piece is provided with a hollow structure which runs through the upper and lower surfaces thereof, the first interlayer is matched with the hollow structure, the first outer liner and the first inner liner are respectively sealed and connected to the upper and lower surfaces of the upper connecting piece; the main body includes a second outer liner, a second interlayer and a second inner liner which are stacked, the lower surface of the lower connecting piece is provided with a circle of mounting grooves, the upper end of the second interlayer is matched with the mounting grooves, the second outer liner and the second inner liner are respectively matched with the outer side and the inner side of the second interlayer, and the upper ends of both are respectively sealed and connected to the outer side and the inner side of the mounting grooves.

[0008] The first outer liner, the first inner liner, the second outer liner and the second inner liner are all made of cloth, and the cloth is made of a composite material of PVC, TPU, EVA or PEVA material and textile material; the first interlayer and the second interlayer are both made of plastic material, and the plastic material is PE cotton, EVA, TPR, foam or NBR material; the sealing ring is made of PVC, TPU, TPR, rubber or silicone material; the hard material is an injection moldable plastic.

[0009] The cover body and the upper connecting piece, and the body and the lower connecting piece are sealed and connected by bonding.

[0010] The switch mechanism comprises a buckle member arranged at the front end of the upper connecting member and a buckle connection portion arranged at the front end of the lower connecting member. When the upper connecting member covers the lower connecting member, the buckle member is buckled on the buckle connection portion.

[0011] A circle of steps is provided on the side wall of the through hole, and a circle of first flange is formed on the side of the step facing the protrusion, and the sealing ring is fitted on the first flange; when the upper connecting member and the lower connecting member are covered, the protrusion contacts the sealing ring and squeezes the sealing ring to deform, so as to achieve sealing between the protrusion and the step.

[0012] The sealing ring is fitted on the periphery of the lower end of the protrusion, and a circle of steps is provided on the side wall of the through hole. A circle of first flanges arranged opposite to the sealing ring are formed on the side of the step facing the sealing ring; when the upper connecting member and the lower connecting member are covered, the first flange contacts the sealing ring and squeezes the sealing ring to deform, so as to achieve sealing between the protrusion and the step.

[0013] A first sealing ring groove for assembling the sealing ring is arranged at the periphery of the lower end of the protruding portion; the sealing ring is bonded in the first sealing ring groove.

[0014] The sealing ring is fitted on the side wall of the protrusion; when the upper connecting member is covered with the lower connecting member, the side wall of the through hole contacts the sealing ring and squeezes the sealing ring to deform, so as to achieve sealing between the protrusion and the through hole.

[0015] A circle of second sealing ring groove is formed on the side wall of the protruding portion, and the sealing ring is bonded in the second sealing ring groove.

[0016] The side wall of the through hole is formed with a second flange arranged opposite to the second sealing ring groove. When the upper connecting member is covered with the lower connecting member, the second flange presses the sealing ring toward the second sealing ring groove. The surface of the second flange is a smooth arc surface.

[0017] The sealing ring is fitted on the side wall of the through hole; when the upper connecting member is covered with the lower connecting member, the side wall of the protrusion contacts the sealing ring and squeezes the sealing ring to deform, so as to achieve sealing between the protrusion and the through hole.

[0018] A circle of third sealing ring groove is formed on the side wall of the through hole, and the sealing ring is bonded in the third sealing ring groove.

[0019] The side wall of the protrusion is formed with a third flange arranged opposite to the third sealing ring groove. When the upper connecting member is covered with the lower connecting member, the third flange presses the sealing ring toward the third sealing ring groove; the surface of the third flange is a smooth arc surface.

[0020] A method for producing a novel heat-insulating container comprises the following steps:

[0021] Step 1: Use hard materials to make upper connecting parts and lower connecting parts that are pivotally connected to each other and assemble them;

[0022] Step 2: Place the interlayer of the thermal insulation container body into the outer liner, and then place the inner liner into the interlayer, and then bond the top of the overall structure to the lower connecting piece; place the interlayer of the thermal insulation container cover into the upper connecting piece, and then place the outer liner and the inner liner on the upper and lower surfaces of the upper connecting piece respectively and bond them.

[0023] After adopting the above technical scheme, the present invention uses hard materials to make the upper connecting parts and the lower connecting parts as the shape frame of the heat-insulating container. In its production process, the upper connecting parts and the lower connecting parts are more convenient to assemble with the soft cover and the main body due to their hard characteristics and fixed shapes. The production process is more convenient and simple, which can improve production efficiency, product quality and sealing performance. At the same time, the sealing ring is used to achieve sealing between the protrusion and the side wall of the through hole to ensure the sealing effect of the heat-insulating container after assembly. When the upper connecting part and the lower connecting part are covered, the sealing ring is squeezed and deformed and filled between the protrusion and the through hole to ensure good sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional diagram of a specific embodiment of the present invention in a closed state;

[0025] Figure 2 A three-dimensional diagram of an open state of a specific embodiment of the present invention;

[0026] Figure 3 The front view of a specific embodiment of the present invention

[0027] Figure 4 It is a rear view of a specific embodiment of the present invention;

[0028] Figure 5 A top view of a specific embodiment of the present invention;

[0029] Figure 6 for Figure 5 Sectional view in the AA direction;

[0030] Figure 7 for Figure 5 Cross-sectional view in the BB direction;

[0031] Figure 8 It is a three-dimensional diagram of a first embodiment of an opening and closing assembly of the present invention;

[0032] Fig. 9 It is an exploded view of the first embodiment of the opening and closing assembly of the present invention;

[0033] Fig.10 is a cross-sectional view of a first embodiment of an opening and closing assembly of the present invention;

[0034] Fig.11 is a perspective view of a second embodiment of the opening and closing assembly of the present invention;

[0035] Fig.12 It is an exploded view of the second embodiment of the opening and closing assembly of the present invention;

[0036] Fig.13 is a cross-sectional view of a second embodiment of the opening and closing assembly of the present invention;

[0037] Fig.14 is a three-dimensional diagram of a third embodiment of an opening and closing assembly of the present invention;

[0038] Fig.15 It is an exploded view of the third embodiment of the opening and closing assembly of the present invention;

[0039] Fig.16 is a cross-sectional view of a third embodiment of an opening and closing assembly of the present invention;

[0040] Fig.17 is a perspective view of a fourth embodiment of an opening and closing assembly of the present invention;

[0041] Fig.18 It is an exploded view of a fourth embodiment of the opening and closing assembly of the present invention;

[0042] Fig.19 is a cross-sectional view of a fourth embodiment of an opening and closing assembly of the present invention;

[0043] Explanation of the accompanying drawings: cover body 1; first outer liner 11; first interlayer 12; first inner liner 13; main body 2; storage space 21; second outer liner 22; second interlayer 23; second inner liner 24; sealing ring 3; upper connecting member 4; protrusion 41; hollow structure 42; first sealing ring groove 43; second sealing ring groove 44; third flange 45; lower connecting member 5; through hole 51; mounting groove 52; buckling portion 53; give way groove 54; step 55; first flange 56; second flange 57; third sealing ring groove 58; snap member 6. DETAILED DESCRIPTION

[0044] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0045] See also Figures 1 to 19 As shown, the present invention includes a novel heat-insulating container, the structure of which includes a cover body 1, a body 2, an opening and closing assembly and a sealing ring 3.

[0046] The body 2 is formed with a storage space 21;

[0047] The opening and closing assembly includes an upper connecting member 4 and a lower connecting member 5 made of hard material. The upper connecting member 4 is sealedly connected to the cover body 1, and the lower connecting member 5 is sealedly connected to the opening of the storage space 21; the rear ends of the upper connecting member 4 and the lower connecting member 5 are pivotally matched, and the front ends of both are provided with a switch mechanism; the lower connecting member 5 is provided with a through hole 51 connected to the storage space 21, and the upper connecting member 4 is provided with a protrusion 41 matching the through hole 51, and the sealing ring 3 is sealed between the through hole 51 and the protrusion 41.

[0048] refer to Figures 1 to 7 Shown is a specific embodiment of the present invention.

[0049] The upper connecting member 4 and the lower connecting member 5 may be pivotally connected via a rotating shaft or via a hinge, depending on actual needs.

[0050] The cover body 1 comprises a first outer liner 11, a first interlayer 12 and a first inner liner 13 which are stacked. The upper connecting piece 4 is provided with a hollow structure 42 which runs through the upper and lower surfaces thereof. The first interlayer 12 is fitted in the hollow structure 42. The first outer liner 11 and the first inner liner 13 are respectively sealed and connected to the upper and lower surfaces of the upper connecting piece 4.

[0051] The above-mentioned main body 2 includes a second outer liner 22, a second interlayer 23 and a second inner liner 24 which are stacked. The lower surface of the lower connecting member 5 is provided with a circle of mounting grooves 52. The upper end of the second interlayer 23 is fitted in the mounting groove 52. The second outer liner 22 and the second inner liner 24 are respectively fitted on the outer side and the inner side of the second interlayer 23. The upper ends of the two are respectively sealed and connected to the outer side and the inner side of the mounting groove 52.

[0052] The first outer liner 11, the first inner liner 13, the second outer liner 22 and the second inner liner 24 are all made of cloth, and the cloth is made of a composite material of PVC, TPU, EVA or PEVA material and a textile material; the first interlayer 12 and the second interlayer 23 are both made of a plastic material, and the plastic material is made of a material with thermal insulation properties such as PE cotton, EVA, TPR, foam or NBR; the sealing ring 3 is made of PVC, TPU, TPR, rubber or silicone material.

[0053] The cover body 1 and the upper connecting member 4, and the body 2 and the lower connecting member 5 are sealed and connected by bonding.

[0054] The switch mechanism includes a snap-fit ​​member 6 disposed at the front end of the upper connecting member 4 and a buckle connection portion 53 disposed at the front end of the lower connecting member 5. When the upper connecting member 4 and the lower connecting member 5 are covered, the snap-fit ​​member 6 is buckled on the buckle connection portion 53 to achieve buckle connection between the front ends of the upper connecting member 4 and the lower connecting member 5. In this embodiment, the snap-fit ​​member 6 is pivotally connected with the front end of the upper connecting member 4; the front end of the lower connecting member 5 is provided with a clearance groove 54, and the buckle connection portion 53 is disposed in the clearance groove 54. After the upper connecting member 4 and the lower connecting member 5 are covered, the snap-fit ​​member 6 is located in the clearance groove 54 and does not protrude from the front ends of the upper connecting member 4 and the lower connecting member 5, so that the front ends are kept flat, that is, the surface of the heat preservation container is flat.

[0055] The hard material is injection moldable plastic.

[0056] In practical applications, the body 2 is generally made into a box or a bag. Of course, the present invention can also design the heat preservation container into two parts in other forms.

[0057] See also Figures 8 to 10 , which is the first embodiment of the opening and closing assembly of the present invention.

[0058] The side wall of the through hole 51 is provided with a circle of steps 55, and a circle of first flanges 56 are formed on the side of the step 55 facing the protrusion 41, and the sealing ring 3 is fitted on the first flanges 56; when the upper connecting member 4 and the lower connecting member 5 are closed, the protrusion 41 contacts the sealing ring 3 and squeezes the sealing ring 3 to deform, so as to achieve the seal between the protrusion 41 and the step 55. The sealing ring 3 is fixed on the first flange 56 of the step 55, and the sealing ring 3 is not easy to loosen when the opening and closing assembly is closed or opened; the first flange 56 presses against the sealing ring 3 to deform the sealing ring 3, the force-bearing area is small, the deformation of the sealing ring 3 is more sufficient, and the sealing effect is better.

[0059] The sealing ring 3 has a C-shaped cross section, and the sealing ring 3 covers the upper surface and both side surfaces of the first flange 56. In the first embodiment, the sealing ring 3 is bonded to the first flange 56.

[0060] See also Figures 11 to 13 , which is the second embodiment of the opening and closing assembly of the present invention.

[0061] The sealing ring 3 is matched with the periphery of the lower end of the protrusion 41, and the side wall of the through hole 51 is provided with a circle of steps 55, and the side of the step 55 facing the sealing ring 3 is formed with a circle of first flanges 56 arranged opposite to the sealing ring 3; when the upper connecting member 4 and the lower connecting member 5 are covered, the first flange 56 contacts the sealing ring 3 and squeezes the sealing ring 3 to deform, so as to achieve the seal between the protrusion 41 and the step 55. Then the sealing ring 3 is matched with the lower end of the protrusion 41 and moves with the protrusion 41, which is more convenient for observation and replacement; the first flange 56 abuts against the sealing ring 3 to deform the sealing ring 3, the force-bearing area is small, the deformation of the sealing ring 3 is more sufficient, and the sealing effect is better.

[0062] The lower edge of the protrusion 41 is provided with a first sealing ring groove 43 for assembling the sealing ring 3. In the second embodiment, the sealing ring 3 is bonded in the first sealing ring groove 43, or the sealing ring 3 can be inserted in the first sealing ring groove 43 in a tight fit manner and ensured not to fall off.

[0063] See also Figures 14 to 16 , which is the third embodiment of the opening and closing assembly of the present invention.

[0064] The sealing ring 3 is fitted on the side wall of the protrusion 41; when the upper connecting member 4 and the lower connecting member 5 are covered, the side wall of the through hole 51 contacts the sealing ring 3 and squeezes the sealing ring 3 to deform, so as to achieve the seal between the protrusion 41 and the through hole 51. The sealing ring 3 is fitted on the side wall of the protrusion 41 in an annular sleeve form, and the elastic force of the sealing ring 3 can ensure that it is tightly fitted on the protrusion 41, so as to avoid the position change of the sealing ring 3 and affect the sealing effect.

[0065] The side wall of the protrusion 41 is formed with a circle of second sealing ring groove 44, and the sealing ring 3 is fitted in the second sealing ring groove 44. In the third embodiment, the sealing ring 3 is bonded in the second sealing ring groove 44, or the sealing ring 3 can be tightly fitted in the second sealing ring groove 44. Since the sealing ring 3 is annularly sleeved on the outer peripheral side wall of the protrusion 41, it can be prevented from falling.

[0066] The side wall of the through hole 51 is formed with a second flange 57 arranged opposite to the second sealing ring groove 44. When the upper connecting member 4 and the lower connecting member 5 are covered, the second flange 57 presses the sealing ring 3 toward the second sealing ring groove 44 to achieve a better sealing effect. In the third embodiment, the surface of the second flange 57 is a smooth arc surface to avoid interference with the protruding portion 41 when covering / opening, which is convenient for users to operate.

[0067] See also Figures 17 to 19 , which is the fourth embodiment of the opening and closing assembly of the present invention.

[0068] The sealing ring 3 is fitted on the side wall of the through hole 51; when the upper connecting member 4 and the lower connecting member 5 are covered, the side wall of the protrusion 41 contacts the sealing ring 3 and squeezes the sealing ring 3 to deform, so as to achieve the seal between the protrusion 41 and the through hole 51. The sealing ring 3 is fitted on the side wall of the through hole 51 and is fixed, so that the sealing performance of the designated position can be guaranteed.

[0069] The side wall of the through hole 51 is formed with a circle of third sealing ring grooves 58, and the sealing ring 3 fits in the third sealing ring grooves 58. In the fourth embodiment, the sealing ring 3 is bonded in the third sealing ring grooves 58, or the sealing ring 3 can be tightly fitted in the third sealing ring grooves 58, or some structures that can hold the sealing ring 3 are provided on the wall of the third sealing ring grooves 58 to prevent it from falling.

[0070] The side wall of the protruding portion 41 is formed with a third flange 45 arranged opposite to the third sealing ring groove 58. When the upper connecting member 4 and the lower connecting member 5 are covered, the third flange 45 presses the sealing ring 3 toward the third sealing ring groove 58 to achieve a better sealing effect. In the fourth embodiment, the surface of the third flange 45 is a smooth arc surface to avoid interference with the protruding portion 41 (upper connecting member 4) when covering / opening, which is convenient for users to operate.

[0071] The present invention also includes a method for producing a novel heat-insulating container, comprising the following steps:

[0072] Step 1: Use hard materials to make upper connecting parts 4 and lower connecting parts 5 that are pivotally connected to each other and assemble them;

[0073] Step 2: Place the interlayer of the insulation container body 2 into the outer liner, and then place the inner liner into the interlayer, and then bond the top of the overall structure to the lower connecting piece 5; place the interlayer of the insulation container cover 1 into the upper connecting piece 4, and then place the outer liner and inner liner on the upper and lower surfaces of the upper connecting piece 4 respectively and bond them.

[0074] In the above step 2, the inner liner of the body 2 and the cover 1 of the heat-insulating container is made into an airtight inner liner to improve the airtightness of the final product.

[0075] Through the above scheme, the present invention uses hard materials to make the upper connecting member 4 and the lower connecting member 5 as the shape frame of the heat-insulating container. In its production process, the upper connecting member 4 and the lower connecting member 5 are more convenient to assemble with the soft cover body 1 and the main body 2 due to their hard characteristics and fixed shapes. The production process is more convenient and simple, which can improve production efficiency, product quality rate and sealing performance; at the same time, the sealing ring 3 is used to achieve sealing between the protrusion 41 and the side wall of the through hole 51 to ensure the sealing effect of the heat-insulating container after assembly. When the upper connecting member 4 and the lower connecting member 5 are covered, the sealing ring 3 is squeezed and deformed and filled between the protrusion 41 and the through hole 51 to ensure good sealing performance.

[0076] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A heat-insulating container, characterized in that: It includes a cover, a body, an opening and closing assembly and a sealing ring; The body is formed with a storage space; The opening and closing assembly comprises an upper connecting member and a lower connecting member made of hard material, wherein the upper connecting member is sealedly connected to the cover body, and the lower connecting member is sealedly connected to the opening of the storage space; the upper connecting member and the lower connecting member are pivotally matched at the rear ends, and a switch mechanism is arranged at the front ends of the two members; the lower connecting member is provided with a through hole communicating with the storage space, the upper connecting member is provided with a protrusion matching with the through hole, and the sealing ring is sealedly matched between the through hole and the protrusion; The cover and the upper connecting piece, and the body and the lower connecting piece are sealed and connected by bonding; The cover body comprises a first outer liner, a first interlayer and a first inner liner which are stacked, the upper connecting piece is provided with a hollow structure which penetrates the upper and lower surfaces thereof, the first interlayer is matched with the hollow structure, and the first outer liner and the first inner liner are respectively sealed and connected to the upper and lower surfaces of the upper connecting piece; The main body includes a second outer liner, a second interlayer and a second inner liner which are stacked together. A circle of mounting grooves is provided on the lower surface of the lower connecting piece. The upper end of the second interlayer is fitted in the mounting groove. The second outer liner and the second inner liner are respectively fitted on the outer side and the inner side of the second interlayer. The upper ends of the two are respectively sealed and connected to the outer side and the inner side of the mounting groove.

2. A thermal insulation container according to claim 1, characterized in that: The first outer liner, the first inner liner, the second outer liner and the second inner liner are all made of cloth, and the cloth is made of a composite material of PVC, TPU, EVA or PEVA material and textile material; the first interlayer and the second interlayer are both made of plastic material, and the plastic material is PE cotton, EVA, TPR, foam or NBR material; the sealing ring is made of PVC, TPU, TPR, rubber or silicone material; the hard material is an injection moldable plastic.

3. A thermal insulation container according to claim 1, characterized in that: The switch mechanism comprises a buckle member arranged at the front end of the upper connecting member and a buckle connection portion arranged at the front end of the lower connecting member. When the upper connecting member covers the lower connecting member, the buckle member is buckled on the buckle connection portion.

4. A thermal insulation container according to any one of claims 1 to 3, characterized in that: A circle of steps is provided on the side wall of the through hole, and a circle of first flange is formed on the side of the step facing the protrusion, and the sealing ring is fitted on the first flange; when the upper connecting member and the lower connecting member are covered, the protrusion contacts the sealing ring and squeezes the sealing ring to deform, so as to achieve sealing between the protrusion and the step.

5. A thermal insulation container according to any one of claims 1 to 3, characterized in that: The sealing ring is fitted on the periphery of the lower end of the protrusion, and a circle of steps is provided on the side wall of the through hole. A circle of first flanges arranged opposite to the sealing ring are formed on the side of the step facing the sealing ring; when the upper connecting member and the lower connecting member are covered, the first flange contacts the sealing ring and squeezes the sealing ring to deform, so as to achieve sealing between the protrusion and the step.

6. A heat-insulating container according to claim 5, characterized in that: A first sealing ring groove for assembling the sealing ring is arranged at the periphery of the lower end of the protruding portion; the sealing ring is bonded in the first sealing ring groove.

7. A thermal insulation container according to any one of claims 1 to 3, characterized in that: The sealing ring is fitted on the side wall of the protrusion; when the upper connecting member is covered with the lower connecting member, the side wall of the through hole contacts the sealing ring and squeezes the sealing ring to deform, so as to achieve sealing between the protrusion and the through hole.

8. A heat-insulating container according to claim 7, characterized in that: A circle of second sealing ring groove is formed on the side wall of the protruding portion, and the sealing ring is bonded in the second sealing ring groove.

9. A heat-insulating container according to claim 8, characterized in that: The side wall of the through hole is formed with a second flange arranged opposite to the second sealing ring groove. When the upper connecting member is covered with the lower connecting member, the second flange presses the sealing ring toward the second sealing ring groove. The surface of the second flange is a smooth arc surface.

10. A heat-insulating container according to any one of claims 1 to 3, characterized in that: The sealing ring is fitted on the side wall of the through hole; when the upper connecting member is covered with the lower connecting member, the side wall of the protrusion contacts the sealing ring and squeezes the sealing ring to deform, so as to achieve sealing between the protrusion and the through hole.

11. A heat-insulating container according to claim 10, characterized in that: A circle of third sealing ring groove is formed on the side wall of the through hole, and the sealing ring is bonded in the third sealing ring groove.

12. A heat-insulating container according to claim 11, characterized in that: The side wall of the protrusion is formed with a third flange arranged opposite to the third sealing ring groove. When the upper connecting member is covered with the lower connecting member, the third flange presses the sealing ring toward the third sealing ring groove; the surface of the third flange is a smooth arc surface.

13. A method for producing a heat-insulating container, used for producing a heat-insulating container as claimed in any one of claims 1 to 12, characterized in that The following steps are involved: Step 1: Use hard materials to make upper connecting parts and lower connecting parts that are pivotally connected to each other and assemble them; Step 2: Place the second interlayer of the heat-insulating container body into the second outer liner, and then place the second inner liner into the second interlayer, and then bond the top of the overall structure to the lower connecting piece; place the first interlayer of the heat-insulating container cover into the upper connecting piece, and then place the first outer liner and the first inner liner on the upper and lower surfaces of the upper connecting piece respectively and bond them.

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