Heat preservation container and opening and closing assembly thereof

Abstract

The utility model discloses a heat preservation container and an opening and closing assembly thereof. The stability of sealing performance is improved. The opening and closing assembly comprises an upper connecting piece, a lower connecting piece and a sealing ring. The upper connecting piece and the lower connecting piece are both made of hard materials. The rear sides of the upper connecting piece and the lower connecting piece are pivoted and matched, and a switch device is arranged between the front sides of the upper connecting piece and the lower connecting piece; the lower connecting piece is provided with a through hole, the side wall of the through hole protrudes to form a circle of step, and the upper surface of the step sinks to form a circle of sealing groove; the sealing ring is matched with the upper surface of the step, and the two sides of the sealing ring are fixed to the two sides of the sealing groove respectively; the lower surface of the upper connecting piece protrudes to form a circle of flange corresponding to the position of the sealing groove, and the flange is movably matched in the sealing groove along with the pivoting matching of the upper connecting piece and the lower connecting piece; when the upper connecting piece and the lower connecting piece are closed, the lower end of the flange abuts against the middle portion between the two sides of the sealing ring, and the middle portion deforms towards the bottom of the sealing groove.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal insulation containers, in particular to a thermal insulation container and an opening and closing component thereof. Background Art

[0002] An insulated container is a container with heat-insulating properties that contains a certain amount of storage space. It is mainly used in application scenarios where the temperature of objects needs to be maintained. It is common in industries or fields such as takeout, medicine, and scientific research. The sealing performance between the lid and the body of an insulated container is one of the important factors that determine its functionality. Generally speaking, the sealing ring is an important accessory to improve the sealing performance, and it is known that the tighter the sealing ring is squeezed, the better the sealing effect. However, at the same time, the sealing ring may also create resistance to the opening of the lid, making it difficult to open the lid.

[0003] Patent CN117819052A discloses an insulation container product previously developed by the inventor. Its opening and closing mechanism is achieved through the cooperation between the flange of the upper connecting part and the hook of the sealing ring fixed in the lower connecting part. When the opening and closing mechanism is in the closed state, the flange will be inserted into the groove of the hook and the hook will be stretched downward, so that the hook of the sealing ring is tightly fitted on the flange, achieving a sealed fit between the flange (upper connecting part) and the sealing ring (lower connecting part). In addition, during the opening process of the opening and closing mechanism, the sealing ring will not generate friction in the axial direction of the through hole, making the opening and closing of the opening and closing mechanism easy and labor-saving.

[0004] During production and use, the following problems were discovered: the sealing ring is typically made of rubber, which is prone to softening and deformation when exposed to high temperatures. Similarly, the upper and lower connectors of the opening and closing mechanism are also susceptible to deformation due to heat. As a result, after a period of use, the flange and hook of the thermal insulation container may not be fully aligned, resulting in a decrease in or even loss of sealing performance. Therefore, the inventors aim to improve upon the previous technical solutions and address the corresponding issues. Utility Model Content

[0005] The purpose of the utility model is to provide a heat-insulating container and an opening and closing component thereof, so as to solve the problems existing in the prior art, improve the sealing structure of the opening and closing component, extend its service life, and ensure the stability of the sealing performance.

[0006] In order to achieve the above objectives, one of the solutions of the present invention is:

[0007] An open-close assembly comprises an upper connecting piece, a lower connecting piece and a sealing ring; the upper connecting piece and the lower connecting piece are made of hard material; the upper connecting piece is pivotally connected with the rear side of the lower connecting piece, and a switch device is arranged between the front sides of the two; the lower connecting piece is provided with a through hole, the side wall of the through hole is protruded to form a step, and the upper surface of the step is recessed to form a sealing groove; the sealing ring is fitted on the upper surface of the step, and the two sides of the sealing ring are fixed on the two sides of the sealing groove; the lower surface of the upper connecting piece is protruded to form a flange at the position corresponding to the sealing groove, and the flange is movably fitted in the sealing groove along with the pivotal connection of the upper connecting piece and the lower connecting piece; when the upper connecting piece and the lower connecting piece are closed, the lower end of the flange abuts against the middle part between the two sides of the sealing ring, and the middle part is deformed towards the bottom of the sealing groove.

[0008] The hard material is injection-molded plastic, metal or solid wood.

[0009] The lower surface of the upper connecting piece is protruded to form a boss matching the shape of the through hole; the size of the boss is smaller than the through hole, and the boss is movably fitted in the through hole along with the pivotal connection of the upper connecting piece and the lower connecting piece; the flange is formed on the lower surface of the boss.

[0010] The switch device comprises a movable buckle arranged on the front side of the upper connecting piece and a buckling part arranged on the front side of the lower connecting piece; when the upper connecting piece and the lower connecting piece are closed, the movable buckle is buckled on the buckling part.

[0011] Preferably, the movable buckle is fixedly connected on the front side of the lower surface of the upper connecting piece; the front side of the lower connecting piece is recessed to form a clearance groove, and the buckling part is arranged in the clearance groove.

[0012] The open-close assembly further comprises a fixing ring; the fixing ring is installed on the side wall of the through hole and above the step, the fixing ring presses the first side of the sealing ring against the upper surface of the step; the side edge of the step is protruded to form a limiting flange, and the second side of the sealing ring is provided with a hook part buckled on the limiting flange.

[0013] Preferably, the circumferential surface of the fixing ring is provided with a plurality of buckles, the side wall of the through hole is provided with buckle holes matching the buckles, and the buckles are buckled and fitted in the buckle holes.

[0014] Preferably, the lower surface of the fixing ring is recessed to form a first limiting groove, and the upper surface of the step is recessed to form a second limiting groove corresponding to the position of the first limiting groove; the upper and lower surfaces of the first side of the sealing ring are respectively protruding to form a first protrusion and a second protrusion, and the first protrusion and the second protrusion are respectively embedded in the first limiting groove and the second limiting groove.

[0015] The second solution of the utility model is:

[0016] A heat-insulating container comprises the opening and closing assembly and a container body; the lower connecting piece is sealedly connected to the upper end of the container body, and the through hole is connected to the interior of the container body.

[0017] After adopting the above technical solution, the utility model has the following technical effects:

[0018] The utility model changes the sealing ring installation method of the existing opening and closing assembly, installs the sealing ring on the step of the lower connecting piece, and opens a sealing groove on the step to provide a space for the sealing ring to be compressed and deformed; when the opening and closing assembly is in a closed state, the lower end of the flange is inserted into the sealing groove, and the middle part of the sealing ring is pressed to the bottom of the sealing groove, causing the sealing ring to deform, and the sealing ring fits tightly with the lower end of the flange due to its own elasticity, thereby realizing the contact surface sealing between the sealing ring and the flange, and then realizing the sealing of the upper connecting piece and the lower connecting piece, ensuring the sealing performance of the mechanical structure after closing; at the same time, since the upper connecting piece mainly acts on the sealing ring in the axial direction of the through hole, and the sealing ring is tightly attached to the lower end of the flange, the sealing ring as a whole does not generate friction force acting on the side surface of the flange in the axial direction of the through hole, making the opening and closing mechanism easier, smoother, and without jamming, and providing a better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional diagram of the closed state of the cover opening assembly of the utility model;

[0020] Figure 2 This is a three-dimensional diagram of the opening state of the cover opening assembly of the utility model;

[0021] Figure 3 Decomposition of the cover opening assembly of the utility model Figure 1 ;

[0022] Figure 4 Decomposition of the cover opening assembly of the utility model Figure 2 ;

[0023] Figure 5 This is a cross-sectional view of the cover opening assembly of the utility model;

[0024] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0025] Figure 7 This is a schematic cross-sectional view of the sealing ring of the utility model under normal conditions;

[0026] Figure 8 A three-dimensional diagram of the thermal insulation container of the present invention;

[0027] Description of Figure Numbers:

[0028] 1-upper connecting piece; 11-flange; 12-boss; 2-lower connecting piece; 21-through hole; 211-snapping hole; 22-step; 221-limiting flange; 222-second limiting groove; 23-sealing groove; 24-yielding groove; 25-installing groove; 3-sealing ring; 31-middle part; 32-hook; 33-first protrusion; 34-second protrusion; 4-switch device; 41-movable buckle; 42-buckle connection part; 43-torsion spring; 5-fixing ring; 51-snapping; 52-first limiting groove; 6-container body; 7-cover. DETAILED DESCRIPTION

[0029] In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific embodiments.

[0030] refer to Figures 1 to 7 As shown, the utility model discloses an opening and closing assembly, comprising an upper connecting member 1, a lower connecting member 2 and a sealing ring 3; the upper connecting member 1 and the lower connecting member 2 are both made of hard materials;

[0031] The upper connecting member 1 and the lower connecting member 2 are pivotally connected at their rear sides, and a switch device 4 is provided between their front sides;

[0032] The lower connecting member 2 is provided with a through hole 21, the side wall of the through hole 21 protrudes to form a circle of steps 22, and the upper surface of the step 22 is recessed to form a circle of sealing grooves 23; the sealing ring 3 is fitted on the upper surface of the step 22, and the two sides of the sealing ring 3 are respectively fixed on the two sides of the sealing groove 23, so that on the cross section of the opening and closing component (see Figure 6 ) The sealing ring 3 spans both sides of the sealing groove 23;

[0033] A circle of flange 11 is protruded from the lower surface of the upper connecting member 1 at the position corresponding to the sealing groove 23. The flange 11 is movably engaged in the sealing groove 23 as the upper connecting member 1 and the lower connecting member 2 are pivotally connected. When the upper connecting member 1 and the lower connecting member 2 are closed, the lower end of the flange 11 abuts the middle part 31 between the two sides of the sealing ring 3, causing the middle part 31 to deform toward the bottom of the sealing groove 23.

[0034] By the above scheme, the utility model discloses the sealing ring installation mode of the prior open-close assembly is changed, the sealing ring 3 is installed on the step 22 of lower connecting piece 2, and the sealing groove 23 is set up on the step 22 to provide the space for the pressure deformation of sealing ring 3, when the open-close assembly is in the closed state, the lower end of flange 11 is inserted into sealing groove 23, and the middle part 31 of sealing ring 3 is pressed to the bottom of sealing groove 23, so that sealing ring 3 is deformed, and sealing ring 3 is tightly matched in the lower end of flange 11 due to the elasticity of itself, the contact surface sealing between sealing ring 3 and flange 11 is realized, and then the sealing of upper connecting piece 1 and lower connecting piece 2 is realized, the sealing performance after the closure of mechanical structure is guaranteed, and simultaneously, since upper connecting piece 1 mainly acts on sealing ring 3 in the axial direction of through hole 21, and sealing ring 3 is attached to the lower end of flange 11, the friction force on the side surface of flange 11 is not generated in the axial direction of through hole 21, so that the opening and closing of open-close mechanism are more easy, smooth, not jammed, and the user experience is better.

[0035] Figures 1 to 7 The specific embodiment of the open-close assembly is shown.

[0036] The hard material is injection-molded plastic, metal or solid wood, the plastic can be polyethylene, polypropylene, ABS, PA, polystyrene, etc., the metal can be iron, stainless steel, aluminum alloy, etc., and the solid wood can be pine, rubber wood, birch, etc. cheap and hard wood material; the sealing ring 3 can be made of rubber, silicone, PVC, TPU or TPR.

[0037] The lower surface of the upper connecting piece 1 is protruded to form a boss 12 matched with the shape of the through hole 21; the size of the boss 12 is smaller than the through hole 21, and is movably matched in the through hole 21 with the pivotal connection of the upper connecting piece 1 and the lower connecting piece 2; the flange 11 is formed on the lower surface of the boss 12. By setting the boss 12 and forming the flange 11 thereon, the thickness of the upper connecting piece 1 can be increased to improve the strength.

[0038] The above-mentioned switch device 4 includes a movable buckle 41 arranged on the front side of the upper connecting piece 1, and a buckle connecting part 42 arranged on the front side of the lower connecting piece 2, when the upper connecting piece 1 and the lower connecting piece 2 are closed, the movable buckle 41 is buckled on the buckle connecting part 42 to realize the detachable cooperation between the front side of the upper connecting piece 1 and the front side of the lower connecting piece 2. The movable buckle 41 is generally pivotally connected with the upper connecting piece 1, and is reset by relying on the torsional spring 43; the buckle connecting part 42 can be directly integrally formed on the lower connecting piece 2, or can be separately formed and connected on the lower connecting piece 2.

[0039] Furthermore, the movable buckle 41 is fixedly connected to the front side of the lower surface of the upper connecting member 1 (located on the side of the boss 12); the front side of the lower connecting member 2 is recessed to form a clearance groove 24, and the buckle portion 42 is disposed within the clearance groove 24. When the upper and lower connecting members 1 and 2 are closed, the movable buckle 41 fits within the clearance groove 24 and does not protrude from the front of the upper and lower connecting members 1 and 2, thus ensuring a smooth surface of the thermal insulation container.

[0040] The pivotal connection between the rear side of the upper connecting member 1 and the rear side of the lower connecting member 2 can be through a rotating shaft or a hinge, depending on actual needs.

[0041] The present invention further includes a retaining ring 5 , which is mounted on the sidewall of the through-hole 21 and positioned above the step 22 . The retaining ring 5 presses the side of the sealing ring 3 closest to the sidewall of the through-hole 21 (hereinafter referred to as the first side) against the upper surface of the step 22 . A limiting flange 221 is formed on the side of the step 22 , and a hook 32 is provided on the side of the sealing ring 3 facing away from the sidewall of the through-hole 21 (hereinafter referred to as the second side) to engage with the limiting flange 221 . During product assembly, the sealing ring 3 is simply placed on the step 22 , the hook 32 on its second side engaging the limiting flange 221 , and the retaining ring 5 is then pressed against the first side of the sealing ring 3 and secured relative to the lower connector 2 . This mechanical structure secures the sealing ring 3 , eliminating the need for glue, welding, or other materials or processes, resulting in simpler and more efficient assembly. Of course, other embodiments utilizing glue, welding, or other methods to secure the sealing ring 3 are not excluded.

[0042] Furthermore, a plurality of clips 51 are provided on the circumferential surface of the fixing ring 5, and clip holes 211 matching the clips 51 are provided on the side walls of the through hole 21. The clips 51 are snap-fitted into the clip holes 211 to achieve relative fixation of the fixing ring 5 and the lower connecting member 2, ensuring that the fixing ring 5 can press the first side of the sealing ring 3 to complete the fixation of the sealing ring 3.

[0043] At the same time, the lower surface of the fixing ring 5 is recessed to form a first limiting groove 52, and the upper surface of the step 22 is recessed to form a second limiting groove 222 at a position corresponding to the first limiting groove 52. The upper and lower surfaces of the first side of the sealing ring 3 are respectively protruding to form a first protrusion 33 and a second protrusion 34, which are respectively embedded in the first limiting groove 52 and the second limiting groove 222. When the fixing ring 5 is pressed against the first side of the sealing ring 3, the first protrusion 33 and the first limiting groove 52, and the second protrusion 34 and the second limiting groove 222 respectively provide a limiting function in the horizontal direction of the step 22 between the contact surfaces of the fixing ring 5 and the sealing ring 3, and between the contact surfaces of the sealing ring 3 and the step 22.

[0044] As described above, since the limiting flange 221 and the hook 32, the first protrusion 33 and the first limiting groove 52, and the second protrusion 34 and the second limiting groove 222 mainly play a limiting role and do not affect the sealing performance of the utility model, there is no specific limitation on their length, shape, etc. They can be connected end to end to form a circle to match the shape of the sealing ring 3, or they can be evenly distributed on the entire circle of the sealing ring 3.

[0045] See also Figure 8 The present invention further discloses a thermal insulation container comprising the aforementioned opening and closing assembly and a container body 6; a lower connecting member 2 is sealedly connected to the upper end of the container body 6, and a through hole 21 communicates with the interior of the container body 6. In practical applications, the container body 6 is generally formed in the shape of a box or a bag; alternatively, the thermal insulation container may be designed as two separate parts in other forms.

[0046] The lower surface of the lower connecting member 2 is provided with a circle of mounting grooves 25 for the upper end of the container body 6 to fit into.

[0047] The upper connecting member 1 can be directly used as the cover of the heat-insulating container. When the middle part of the upper connecting member 1 is hollowed out to design a storage space, a cover 7 can be set above the storage space.

[0048] 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. An opening and closing assembly, characterized in that: It includes an upper connecting piece, a lower connecting piece and a sealing ring; The upper connecting member and the lower connecting member are both made of hard material; the upper connecting member is pivotally connected to the rear side of the lower connecting member, and a switch device is provided between the front sides of the upper connecting member and the lower connecting member; The lower connecting member is provided with a through hole, the side wall of the through hole protrudes to form a circle of steps, the upper surface of the step is recessed to form a circle of sealing grooves; the sealing ring is fitted on the upper surface of the step, and the two sides of the sealing ring are respectively fixed on the two sides of the sealing groove; A circle of flange is protruded from the lower surface of the upper connecting member at a position corresponding to the sealing groove, and the flange is engaged in the sealing groove as the upper connecting member and the lower connecting member are pivotally connected and engaged with each other; when the upper connecting member and the lower connecting member are closed, the lower end of the flange abuts the middle part between the two sides of the sealing ring, and causes the middle part to deform toward the bottom of the sealing groove.

2. The opening and closing assembly according to claim 1, wherein: The hard material is injection-molded plastic, metal or solid wood.

3. The opening and closing assembly according to claim 1, wherein: The lower surface of the upper connecting member is protruded to form a boss that matches the shape of the through hole; the size of the boss is smaller than the through hole, and is engaged in the through hole as the upper connecting member and the lower connecting member are pivotally connected; the flange is formed on the lower surface of the boss.

4. The opening and closing assembly according to claim 1, wherein: The switch device includes a movable buckle arranged on the front side of the upper connecting member and a buckling portion arranged on the front side of the lower connecting member. When the upper connecting member and the lower connecting member are closed, the movable buckle is buckled on the buckling portion.

5. The opening and closing assembly according to claim 4, wherein: The movable buckle is fixedly connected to the front side of the lower surface of the upper connecting member; the front side of the lower connecting member is recessed to form a clearance groove, and the buckling portion is arranged in the clearance groove.

6. The opening and closing assembly according to claim 1, wherein: It also includes a fixing ring; the fixing ring is installed on the side wall of the through hole and is located above the step, and the fixing ring presses the first side of the sealing ring against the upper surface of the step; a limiting flange is protruded on the side of the step, and a hook portion is provided on the second side of the sealing ring to hook onto the limiting flange.

7. The opening and closing assembly according to claim 6, wherein: A plurality of buckles are provided on the circumferential surface of the fixing ring, and buckle holes matching the buckles are provided on the side walls of the through hole, and the buckles are buckled and fitted in the buckle holes.

8. The opening and closing assembly according to claim 6, wherein: The lower surface of the fixing ring is recessed to form a first limiting groove, and the upper surface of the step is recessed to form a second limiting groove corresponding to the position of the first limiting groove; the upper and lower surfaces of the first side of the sealing ring are respectively protruding to form a first protrusion and a second protrusion, and the first protrusion and the second protrusion are respectively embedded in the first limiting groove and the second limiting groove.

9. A thermal insulation container, characterized in that It comprises an opening and closing assembly as described in any one of claims 1 to 8, and a container body; the lower connecting piece is sealedly connected to the upper end of the container body, and the through hole is connected to the interior of the container body.

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