Cover opening and closing mechanism of heat preservation container

Abstract

The invention discloses a cover opening and closing mechanism of a heat preservation container, which not only can ensure the stability of the sealing performance, but also can avoid the influence on the cover opening hand feeling caused by overlarge resistance generated by a sealing element in the cover opening process. The cover opening and closing mechanism of the heat preservation container comprises a cover body, a body, a sealing piece, an inner pressing ring and an outer pressing ring. The cover body is pivoted and matched with the rear side of the body, and a cover closing fixing assembly is arranged between the front sides of the cover body and the body; the body is provided with a through hole and a circle of sealing groove arranged on the outer side of the through hole in a surrounding mode. The inner side and the outer side of the sealing piece are pressed and fixed to the two sides of the sealing groove through an inner pressing ring and an outer pressing ring respectively, and the inner pressing ring and the outer pressing ring are fixed to the body relatively. At least one pair of sealing strips are arranged on two sides of the middle part of the upper surface of the sealing piece; the position, corresponding to the sealing groove, of the lower surface of the cover body protrudes to form a circle of flange, and the flange is movably matched in the sealing groove along with pivoting matching of the cover body and the body.

Description

Technical Field

[0001] The invention belongs to the technical field of heat preservation containers, and in particular relates to a cover opening and closing mechanism of a heat preservation container. Background Art

[0002] An insulated container is a container designed to maintain internal temperature, which can keep hot liquids or food warm, or keep cold items cool. Common insulated containers include insulated boxes, insulated cups, and insulated boxes.

[0003] The sealing performance between the lid and the body of the thermal insulation container is one of the important factors that determine its functionality, and the sealing ring is an important accessory to improve the sealing performance. It is known that the tighter the sealing ring is squeezed, the better the sealing effect, but at the same time, the greater the friction between the sealing ring and the lid body, which will produce greater resistance to the opening of the lid, making it difficult to open and close the lid. Therefore, it is difficult to balance the sealing performance of the product with the flexibility of opening and closing the lid. Summary of the invention

[0004] The main purpose of the present invention is to provide a lid opening and closing mechanism for an insulated container, which solves the problems existing in the prior art, can not only ensure the stability of the sealing performance, but also avoid the seal from generating excessive resistance to the lid opening process and affecting the feel of opening the lid.

[0005] In order to achieve the above object, the solution of the present invention is: The lid opening and closing mechanism of the heat-insulating container comprises a lid body, a main body, a sealing member, an inner pressure ring and an outer pressure ring; the lid body is pivotally connected to the rear side of the main body, and a lid closing fixing assembly is arranged between the front sides of the two; the main body is provided with a through hole and a circle of sealing groove arranged around the outside of the through hole; the inner and outer sides of the sealing member are respectively pressed and fixed to the two sides of the sealing groove by the inner pressure ring and the outer pressure ring, and the inner pressure ring and the outer pressure ring are respectively fixed relatively to the main body; at least one pair of sealing strips are arranged on both sides of the middle part of the upper surface of the sealing member; a circle of flange is protruded on the lower surface of the lid body corresponding to the position of the sealing groove, and the flange is movably fitted in the sealing groove as the lid body and the main body are pivotally connected; when the lid body and the main body are closed, the lower end of the flange abuts the middle part of the upper surface of the sealing member, and causes the middle part to deform toward the bottom direction of the sealing groove, and at the same time, the sealing strip is elastically fitted on both sides of the flange.

[0006] The side wall of the through hole protrudes to form a circle of steps, and the upper surface of the steps is recessed to form the installation groove.

[0007] The cover fixing assembly comprises a movable buckle arranged on the front side of the cover body and a buckling portion arranged on the front side of the main body; when the cover body and the main body are closed, the movable buckle is hooked on the buckling portion.

[0008] Preferably, the movable buckle is fixedly connected to the front side of the lower surface of the cover body; the front side of the main body is recessed to form a clearance groove, and the buckle connection part is arranged in the clearance groove; the front side of the outer pressure ring is provided with a clearance opening for giving way to the movable buckle.

[0009] The body is provided with a plurality of evenly distributed positioning protrusions on both sides of the sealing groove, the sealing member is provided with positioning holes opposite to the positioning protrusions, and the positioning protrusions are embedded in the corresponding positioning holes.

[0010] The upper surface of the sealing member is recessed at the middle portion to form a groove, and opposite sealing strips are arranged on both sides of the groove.

[0011] The cover and the body are both made of hard materials, and the hard materials are injection-molded plastics, metals or solid wood; the sealing element is made of silicone, PVC, TPU or TPR.

[0012] In the above, the lower surfaces of the inner pressure ring and the outer pressure ring are respectively provided with a plurality of first buckles and second buckles, and the upper surface of the body is provided with first buckle holes and second buckle holes for the first buckles and the second buckles to be buckled and matched, respectively, and the first buckle holes and the second buckle holes are respectively located on the inner and outer sides of the sealing groove. Preferably, the first buckle and the second buckle are respectively provided with first spring pieces and second spring pieces on both sides, and the first spring pieces and the second spring pieces are respectively tightly matched at the ends of the length direction of the first buckle holes and the second buckle holes.

[0013] Alternatively, a plurality of first screw columns and second screw columns are respectively provided on the lower surfaces of the inner pressure ring and the outer pressure ring, and a first screw hole and a second screw hole are respectively provided on the main body for embedding the first screw columns and the second screw columns, and the screws are passed through the first screw holes or the second screw holes and locked into the first screw columns or the second screw columns.

[0014] After adopting the above technical solution, the present invention has the following technical effects: (1) Compared with the traditional technology that designs the sealing ring on the side wall of the through hole, the present invention fixes the inner and outer sides of the sealing member to the two sides of the sealing groove on the upper surface of the body through the inner pressure ring and the outer pressure ring respectively. The sealing groove can also provide space for the compression deformation of the sealing member; (2) When the present invention is in a closed state, the lower end of the flange is inserted into the sealing groove, and the middle part of the upper surface of the seal is pressed toward the bottom of the sealing groove, so that the seal is deformed. The seal will fit tightly at the lower end of the flange due to its own elasticity, thereby achieving a sealing of the contact surface between the seal 3 and the flange, thereby achieving a sealing between the cover body and the body, ensuring the sealing performance of the product. At the same time, the sealing strips elastically fitted on both sides of the flange can also achieve further sealing, thereby improving the sealing effect. (3) Since the flange of the cover body mainly acts on the seal in a direction nearly parallel to the axial direction of the through hole, and the seal is also tightly attached to the lower end of the flange, the seal as a whole will not generate friction acting on the side of the flange in the axial direction of the through hole, making the opening and closing of the cover of the present invention easier, smoother, and without jamming, with a good feel, and the user experience is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of a closed state of the first embodiment of the present invention; Figure 2 A three-dimensional diagram of the first embodiment of the present invention in an opened state; Figure 3 Decomposition of the first embodiment of the present invention Figure 1 ; Figure 4 Decomposition of the first embodiment of the present invention Figure 2 ; Figure 5 is a cross-sectional view of a first embodiment of the present invention; Figure 6 for Figure 5 The enlarged view of point A in the middle; Figure 7 A three-dimensional diagram of a closed state of the second embodiment of the present invention; Figure 8 A perspective view of the second embodiment of the present invention in an opened state; Fig. 9 The second embodiment of the present invention is decomposed Figure 1 ; Fig.10 The second embodiment of the present invention is decomposed Figure 2 ; Description of Figure Numbers: 1-cover body; 11-flange; 12-movable buckle; 2-body; 21-through hole; 22-sealing groove; 23-step; 24-movable buckle; 25-giving groove; 26-first buckle hole; 27-second buckle hole; 28-positioning protrusion; 29-installation groove; 210-rib; 220-first screw hole; 230 second screw hole; 3-seal; 31-middle part; 32-seal strip; 33-positioning hole; 34-groove; 4-inner pressure ring; 41-first buckle; 42-first spring piece; 43-first screw column; 5-external pressure ring; 51-giving way; 52-second buckle; 53-second spring piece; 54-second screw column; a- Closing cover fixing assembly. DETAILED DESCRIPTION

[0016] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0017] refer to Figure 1-10 As shown, the present invention discloses a cover opening and closing mechanism for a heat preservation container, comprising a cover body 1, a body 2, a sealing member 3, an inner pressure ring 4 and an outer pressure ring 5; The cover 1 is pivotally connected to the rear side of the body 2, and a cover-closing fixing assembly a is arranged between the front sides of the two; The body 2 is provided with a through hole 21 and a sealing groove 22 surrounding the outside of the inlet end of the through hole 21; The inner and outer sides of the seal 3 are respectively fixed to the two sides of the sealing groove 22 by the inner pressure ring 4 and the outer pressure ring 5, so that in the cross section of the present invention (see Figure 6 ) The sealing member 3 completely covers the sealing groove 22, and the inner pressure ring 4 and the outer pressure ring 5 are fixed relatively to the body 2 respectively; at least one pair of sealing strips 32 are arranged on both sides of the middle part 31 of the upper surface of the sealing member 3; A flange 11 is formed on the lower surface of the cover 1 at a position corresponding to the sealing groove 22. The flange 11 is movably engaged in the sealing groove 22 as the cover 1 and the body 2 are pivotally connected. When the cover 1 and the body 2 are closed, the lower end of the flange 11 abuts against the middle portion 31 of the upper surface of the sealing member 3 , causing the middle portion 31 to deform toward the bottom of the sealing groove 22 , while the sealing strip 32 is elastically fitted on both sides of the flange 11 .

[0018] Through the above scheme, compared with the traditional technology of designing the sealing ring on the side wall of the through hole, the present invention fixes the inner and outer sides of the sealing member 3 on both sides of the sealing groove 22 on the upper surface of the body 2 through the inner pressure ring 4 and the outer pressure ring 5, respectively, and the sealing groove 22 can also provide a space for the compression deformation of the sealing member 3; when the present invention is in a closed state, the lower end of the flange 11 is inserted into the sealing groove 22, and the middle part 31 of the upper surface of the sealing member 3 is pressed toward the bottom of the sealing groove 22, so that the sealing member 3 is deformed, and the sealing member 3 will be tightly fitted at the lower end of the flange 11 due to its own elasticity, so as to realize the seal 3 and the flange 11. The contact surface between them is sealed, thereby achieving the sealing of the cover body 1 and the body 2, ensuring the sealing performance of the product. At the same time, the sealing strips 32 elastically fitted on both sides of the flange 11 can also achieve further sealing, thereby improving the sealing effect. Moreover, since the flange 11 of the cover body 1 mainly acts on the sealing member 3 in a direction nearly parallel to the axial direction of the through hole 21, the sealing member 3 is also tightly attached to the lower end position of the flange 11. The sealing member 3 as a whole will not generate frictional force acting on the side of the flange 11 in the axial direction of the through hole 21, making it easier to open and close the cover of the present invention, smoother, without jamming, with a good hand feel, and improved user experience.

[0019] In some embodiments of the present invention, the cover 1 and the body 2 are both made of hard materials to ensure the strength and hardness of the structure.

[0020] Furthermore, the above-mentioned hard materials are injection-molded plastics, metals or solid wood. The plastics can be polyethylene, polypropylene, ABS, PA, polystyrene, etc. The metals can be iron, stainless steel, aluminum alloy, etc. The solid wood can be cheap and hard wood materials such as pine, rubber wood, birch, etc., which ensure material strength and control costs.

[0021] In some embodiments of the present invention, the sealing member 3 may be made of materials commonly used to make sealing rings, such as silicone, PVC (polyvinyl chloride), TPU (thermoplastic polyurethane) or TPR (thermoplastic rubber).

[0022] In some embodiments of the present invention, when the thickness of the body 2 is relatively thin, a circle of steps 23 may be formed on the side wall of the through hole 21, and the upper surface of the step 23 may be recessed to form the above-mentioned mounting groove 23 to ensure a sufficient mounting area. When the step 23 is designed, the sealing groove 22 is mainly arranged on the side of the step 23 close to the through hole 21, that is, the inner side.

[0023] In some embodiments of the present invention, the above-mentioned cover fixing assembly a includes a movable buckle 12 arranged on the front side of the cover body 1, and a buckle connection portion 24 arranged on the front side of the body 2; when the cover body 1 and the body 2 are closed, the movable buckle 12 is hooked on the buckle connection portion 24 to achieve a detachable fit between the front side of the cover body 1 and the front side of the body 2. The pivotal fit between the movable buckle 12 and the cover body 1 is generally achieved by a torsion spring to achieve reset, that is, to achieve automatic cover opening; the buckle connection portion 24 can be directly integrally formed on the body 2, or can be separately formed and then connected to the body 2.

[0024] Furthermore, the movable buckle 12 is fixedly connected to the front side of the lower surface of the cover 1 (located on the side of the boss 12); the front side of the body 2 is recessed to form a clearance groove 25, and the buckle connection part 24 is arranged in the clearance groove 25; the front side of the outer pressure ring 5 is provided with a clearance opening 51 for the movable buckle 12. After the cover 1 and the body 2 are closed, the movable buckle 12 is fitted in the clearance groove 25 and will not protrude from the front of the cover 1 and the body 2, thereby achieving a flat surface of the heat preservation container.

[0025] In some embodiments of the present invention, the pivot connection between the rear side of the cover 1 and the rear side of the main body 2 may be via a rotating shaft or a hinge, depending on actual needs.

[0026] In some embodiments of the present invention, the above-mentioned main body 2 is provided with a plurality of evenly distributed positioning protrusions 28 on both sides of the sealing groove 22, and the sealing member 3 is provided with positioning holes 33 opposite to the positioning protrusions 28. The positioning protrusions 28 are embedded in the corresponding positioning holes 33 to position the sealing member 3 first to prevent it from being displaced in the horizontal direction of the upper surface of the main body 2.

[0027] In some embodiments of the present invention, the upper surface of the sealing member 3 is recessed at the position of the middle portion 31 to form a groove 34, and opposite sealing strips 32 are arranged on both sides of the groove 34. By designing the groove 34 in the sealing member 3, a recessed shape can be formed before the flange 11 is inserted, providing a certain amount of pre-deformation.

[0028] In some embodiments of the present invention, the above-mentioned cover body 1 can be the entire cover body of the heat-insulating container, or it can be only a part of the cover body 1, which cooperates with the heat-insulating material of the container to form a complete movable cover; similarly, the above-mentioned main body 2 can be the entire main body of the heat-insulating container, and the through hole 21 is connected to the opening of the container cavity, or the main body 2 can also be the container opening part of the heat-insulating container, which cooperates with the heat-insulating material of the container to form a complete container part, and the lower surface of the main body 2 can be provided with a circle of installation grooves 29 for positioning and installing the upper end of the heat-insulating material, and a number of ribs 210 are connected between the two walls of the installation grooves 29 to increase the strength.

[0029] See also Figure 1-6 7-10 respectively show the first embodiment and the second embodiment of the present invention, the difference between the two mainly lies in the fixing method between the inner pressure ring 4, the outer pressure ring 5 and the body 2.

[0030] In the first embodiment, the inner pressure ring 4, the outer pressure ring 5 and the body 2 are fixed by snap connection, specifically: The lower surfaces of the inner pressure ring 4 and the outer pressure ring 5 are respectively provided with a plurality of first snap buckles 41 and second snap buckles 52, and the upper surface of the main body 2 is provided with first snap buckle holes 26 and second snap buckle holes 27 for snapping and matching the first snap buckles 41 and the second snap buckles 52, respectively, so as to realize the snap connection between the inner pressure ring 4, the outer pressure ring 5 and the main body 2. The sealing member 3 can be fixed without relying solely on the mechanical structure, and there is no need to use materials or processes such as glue and welding, so the assembly is simpler and more efficient. The first snap buckle hole 26 and the second snap buckle hole 27 are respectively located on the inner and outer sides of the sealing groove 22.

[0031] Furthermore, the first spring piece 42 and the second spring piece 53 are respectively arranged on both sides of the first clip 41 and the second clip 52. The first spring piece 42 and the second spring piece 53 are respectively tightly fitted at the ends of the first clip hole 26 and the second clip hole 27 in the length direction to avoid the first clip 41 and the second clip 52 from shaking, that is, to ensure that the inner pressure ring 4 and the outer pressure ring 5 will not be displaced after installation, and to ensure the stability of the sealing member 3 being fixed.

[0032] In the second embodiment, the inner pressure ring 4, the outer pressure ring 5 and the body 2 are fixed by screw locking, which can fix the inner pressure ring 4 and the outer pressure ring 5 more tightly and improve the sealing performance. Specifically: The lower surfaces of the inner pressure ring 4 and the outer pressure ring 5 are respectively provided with a plurality of first screw columns 43 and second screw columns 54, and the body 2 is provided with first screw holes 220 and second screw holes 220 for embedding the first screw columns 43 and the second screw columns 54, respectively. The screws are passed through the first screw holes 220 or the second screw holes 220 and locked into the first screw columns 43 or the second screw columns 54 to realize the screw locking installation mode of the inner pressure ring 4 or the outer pressure ring 5. Compared with the first embodiment, the inner pressure ring 4 and the outer pressure ring 5 can be fixed more tightly, so the sealing effect of the product is better.

[0033] 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 cover opening and closing mechanism for a heat preservation container, characterized in that: It includes a cover, a body, a sealing member, an inner pressure ring and an outer pressure ring; The cover body is pivotally connected to the rear side of the main body, and a cover-closing fixing assembly is arranged between the front sides of the two; The body is provided with a through hole and a circle of sealing grooves surrounding the outside of the through hole; The inner and outer sides of the seal are respectively fixed to the two sides of the sealing groove by an inner pressure ring and an outer pressure ring, and the inner pressure ring and the outer pressure ring are respectively fixed relatively to the body; at least one pair of sealing strips are arranged on both sides of the middle part of the upper surface of the seal; A flange is formed on the lower surface of the cover body at a position corresponding to the sealing groove, and the flange is movably engaged in the sealing groove as the cover body and the main body are pivotally connected; When the cover and the body are closed, the lower end of the flange abuts against the middle portion of the upper surface of the seal, causing the middle portion to deform toward the bottom of the sealing groove, while the sealing strip is elastically fitted on both sides of the flange.

2. The cover opening and closing mechanism of the heat preservation container according to claim 1, characterized in that: The side wall of the through hole protrudes to form a circle of steps, and the upper surface of the steps is recessed to form the installation groove.

3. The cover opening and closing mechanism of the heat preservation container according to claim 1, characterized in that: The cover fixing assembly comprises a movable buckle arranged on the front side of the cover body and a buckling portion arranged on the front side of the main body; when the cover body and the main body are closed, the movable buckle is hooked on the buckling portion.

4. The cover opening and closing mechanism of the heat preservation container according to claim 3, characterized in that: The movable buckle is fixedly connected to the front side of the lower surface of the cover body; the front side of the main body is recessed to form a clearance groove, and the buckle connection part is arranged in the clearance groove; the front side of the outer pressure ring is provided with a clearance opening for giving way to the movable buckle.

5. The cover opening and closing mechanism of the heat preservation container according to claim 1, characterized in that: The body is provided with a plurality of evenly distributed positioning protrusions on both sides of the sealing groove, the sealing member is provided with positioning holes opposite to the positioning protrusions, and the positioning protrusions are embedded in the corresponding positioning holes.

6. The cover opening and closing mechanism of the heat preservation container according to claim 1, characterized in that: The upper surface of the sealing member is recessed at the middle portion to form a groove, and opposite sealing strips are arranged on both sides of the groove.

7. The cover opening and closing mechanism of the heat preservation container according to claim 1, characterized in that: The cover and the body are both made of hard materials, and the hard materials are injection-molded plastics, metals or solid wood; the sealing element is made of silicone, PVC, TPU or TPR.

8. The cover opening and closing mechanism of the heat preservation container according to any one of claims 1 to 7, characterized in that: The lower surfaces of the inner pressure ring and the outer pressure ring are respectively provided with a plurality of first buckles and second buckles, and the upper surface of the main body is provided with first buckle holes and second buckle holes for the first buckles and the second buckles to be buckled and matched, respectively, and the first buckle holes and the second buckle holes are respectively located on the inner and outer sides of the sealing groove.

9. The cover opening and closing mechanism of the heat preservation container according to claim 8, characterized in that: A first spring sheet and a second spring sheet are respectively arranged on both sides of the first buckle and the second buckle. The first spring sheet and the second spring sheet are respectively tightly fitted at the ends of the first buckle hole and the second buckle hole in the length direction.

10. The cover opening and closing mechanism of the heat preservation container according to any one of claims 1 to 7, characterized in that: The lower surfaces of the inner pressure ring and the outer pressure ring are respectively provided with a plurality of first screw columns and second screw columns, and the main body is provided with first screw holes and second screw holes for the first screw columns and the second screw columns to be embedded respectively, and the screws are passed through the first screw holes or the second screw holes and locked into the first screw columns or the second screw columns.

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