Thermal container and opening and closing mechanism thereof

Abstract

The application provides a heat preservation container and an opening and closing mechanism thereof, which can keep the advantages of easy assembly, high yield, good sealing, optimize the disadvantages of difficult opening and closing, and is convenient to operate and good in user experience. The opening and closing mechanism comprises an upper connecting piece, a lower connecting piece and a sealing ring. The upper and lower connecting pieces are made of hard material, the rear ends of the two are pivotally connected, and the front ends of the two are provided with an opening and closing assembly. The lower connecting piece is provided with a through hole, and the upper connecting piece is provided with a protruding part matched with the shape of the through hole. The size of the protruding part is smaller than that of the through hole, and the protruding part is movably matched in the through hole along with the pivotal connection of the upper connecting piece and the lower connecting piece. The sealing ring comprises a sealing ring body fixedly matched on the side wall of the through hole, and a hook part integrally connected to the lower edge of the inner side of the sealing ring body, and the groove of the hook part faces upward. The lower surface of the protruding part is outwardly protruded to form a flange, the flange abuts against the groove of the hook part along with the closing of the opening and closing mechanism, and stretches the hook part in the direction away from the through hole to deform the hook part.

Description

Technical Field

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

[0002] Thermal containers are containers with heat-insulating properties, most commonly insulated luggage. They are primarily used in areas such as food delivery, medicine, and scientific research where items need to be portable and temperature-maintained. The seal between the lid and the container is the most crucial factor in determining its functionality.

[0003] Traditional thermal insulation bags mainly use airtight zippers as the opening and closing structure to achieve movable opening and closing between the cover and the main body. Since the zipper itself is a soft structure and has no fixed shape, it is difficult to shape it during the production process, especially during the assembly stage of the zipper, the cover and the main body, which affects the production efficiency and the yield rate of the product. At the same time, airtight zippers are more expensive than ordinary zippers. For this reason, the applicant proposed "A New Type of Thermal Insulation Container" in the utility model patent CN214297238U, which uses hard materials to make upper and lower connecting parts as the shape frame of the thermal insulation 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, which 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, ensuring the sealing effect of the thermal insulation container after assembly.

[0004] However, the product of the above patent has the following problems during actual use: since the sealing ring is mainly arranged between the peripheral surface of the protrusion of the upper connecting part and the side wall of the through hole of the lower connecting part, when the opening and closing component is closed, the above protrusion and the through hole squeeze the sealing ring toward each other, causing the sealing ring to deform and fill the gap between the protrusion and the through hole to achieve the purpose of sealing. At the same time, the contact area between the sealing ring and the protrusion and the through hole will become larger, thereby increasing the friction between the accessories. The sealing ring itself is made of materials such as rubber, which may produce sticking at high temperatures, which may make the opening and closing component difficult and laborious to open after closing, resulting in a poor user experience. Summary of the Invention

[0005] The purpose of the present invention is to provide a thermal insulation container and its opening and closing mechanism to solve the problems existing in the prior art, maintain the advantages of easy assembly, high yield and good sealing of the original opening and closing components, optimize the disadvantages of difficult opening and closing, make operation more convenient and provide better user experience.

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

[0007] The utility model provides a kind of open-close mechanism, including upper connecting piece, lower connecting piece and sealing ring;The upper connecting piece, lower connecting piece are made of hard material;The rear end of the upper connecting piece is pivotally connected with the lower connecting piece, and the front end of the two is provided with switch assembly;The lower connecting piece is provided with through hole, and the upper connecting piece is provided with convex part matched with the shape of the through hole;The size of the convex part is less than the through hole, and it is movably matched in the through hole along with the pivotally connected cooperation of the upper connecting piece and the lower connecting piece;The sealing ring includes sealing ring body fixedly matched in the side wall of the through hole, and hook portion integrally connected in the inside surface lower edge of the sealing ring body, and the recess of the hook portion faces upward;The lower surface periphery of the convex part is protruded downward to form a flange, and the flange is abutted to the recess of the hook portion along with the closure of the upper connecting piece and the lower connecting piece, and the hook portion is stretched in the direction away from the through hole to be deformed.

[0008] Connecting portion is provided between the sealing ring body and the hook portion, and the thickness of the connecting portion is less than the thickness of the hook portion.

[0009] The lower end of the flange is integrally connected with bending portion, the bending portion is bent and inclined towards the center line direction of the convex part, and the bending portion is abutted to the recess of the hook portion along with the closure of the upper connecting piece and the lower connecting piece, and the hook portion is stretched in the direction away from the through hole to be deformed.

[0010] The switch assembly includes buckle piece provided in the front end of the upper connecting piece, and buckling portion provided in the front end of the lower connecting piece, and the buckle piece is buckled on the buckling portion when the upper connecting piece and the lower connecting piece are closed.

[0011] Preferably, the buckle piece is fixedly connected to the lower surface of the front end of the upper connecting piece, and the front end of the lower connecting piece is provided with accommodation slot, and the buckling portion is arranged in the accommodation slot.

[0012] The open-close mechanism further includes fixing ring, the side wall of the through hole is protruded to form a step, the upper surface of the step is recessed to form mounting groove, the lower edge of the outside surface of the sealing ring body is provided with first positioning ring, the first positioning ring is embedded in the mounting groove, and the fixing ring is matched on the upper surface of the step and buckled with the side wall of the through hole to compress and fix the sealing ring body.

[0013] Preferably, the upper surface of the sealing ring body is provided with second positioning ring, the lower surface of the fixing ring is provided with limiting slot matched with the second positioning ring, the second positioning ring is embedded in the limiting slot, the side wall of the through hole is provided with buckling groove, and the circumferential surface of the fixing ring is provided with clamping hook movably matched in the buckling groove.

[0014] Alternatively, the side wall of the through hole is protruded to form a circle of steps, and the sealing ring body is fixedly fitted on the steps and closely adheres to the side wall of the through hole.

[0015] Preferably, the upper surface of the sealing ring body is higher than the upper surface of the lower connecting piece, and a cavity is provided in the sealing ring body; when the upper connecting piece and the lower connecting piece are closed, the lower surface of the upper connecting piece presses the upper surface of the sealing ring body downward to deform the cavity.

[0016] The second solution of the present invention is:

[0017] A heat-insulating container comprises the above-mentioned opening and closing mechanism, a cover and a body; the cover is sealedly connected to the upper surface of the upper connecting piece; the lower connecting piece is sealedly connected to the opening of the cavity of the body, and the through hole is connected to the cavity of the body.

[0018] After adopting the above technical solution, the present invention has the following technical effects:

[0019] ① The sealing method of the existing opening and closing assembly, in which the circumference of the protrusion and the side wall of the through hole squeeze the sealing ring toward each other, is changed. Through the cooperation between the hook of the sealing ring and the flange of the upper connecting member, 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, thereby tightening the sealing ring fixedly fitted to the side wall of the through hole and deforming it in the direction of the protrusion. The elasticity of the sealing ring itself reacts on the flange, making the hook close to the surface of the flange, thereby achieving a sealing fit between the hook and the flange, that is, achieving a sealing fit between the upper connecting member and the lower connecting member, and ensuring the sealing performance after the structure is closed;

[0020] ② Since the upper connecting member mainly acts on the hook in the axial direction of the through-hole and stretches the hook away from the through-hole, the sealing ring as a whole does not generate friction force acting on the protrusion in the axial direction of the through-hole, making the opening and closing mechanism easier, smoother, and more user-friendly.

[0021] ③ The upper connecting piece and the lower connecting piece of the present invention are still made of hard materials and can be used as the shape frame of the thermal insulation container. During the assembly process, it is more convenient to assemble and connect with the cover and body of the thermal insulation container, thereby improving production efficiency and yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional diagram of the opening and closing mechanism in a closed state according to the first embodiment of the present invention;

[0023] Figure 2 A three-dimensional diagram of the opening and closing mechanism of the first embodiment of the present invention in an open state;

[0024] Figure 3A sectional view of the sealing ring of the first embodiment of the present application;

[0025] Figure 4 A sectional view of the opening and closing mechanism of the first embodiment of the present application;

[0026] Figure 5 A sectional view of the opening and closing mechanism of the first embodiment of the present application; Figure 4 A sectional view of the opening and closing mechanism of the first embodiment of the present application;

[0027] Figure 6 A sectional view of the opening and closing mechanism of the second embodiment of the present application;

[0028] Figure 7 A perspective view of the heat preservation container of the specific embodiment of the present application;

[0029] Explanation of the reference signs:

[0030] 1 - upper connecting piece; 11 - protruding part; 12 - flange; 13 - bent part; 14 - buckle piece;

[0031] 2 - lower connecting piece; 21 - through hole; 22 - step; 23 - buckling part; 24 - accommodation slot; 25 - installation slot; 26 - buckle slot;

[0032] 3 - sealing ring; 31 - sealing ring body; 32 - hook part; 33 - connecting part; 34 - cavity; 35 - first positioning ring; 36 - second positioning ring;

[0033] 4 - fixed ring; 41 - limiting slot; 42 - clamping hook;

[0034] 5 - cover body;

[0035] 6 - body. DETAILED DESCRIPTION

[0036] In order to further explain the technical solutions of the present application, the present application will be described in detail below through specific embodiments.

[0037] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort shall fall within the scope of the present invention to be protected.

[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0040] In the description of the embodiments of the present invention, it should be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. These are merely simplified descriptions for the convenience of describing the embodiments of the present invention, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0041] Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0042] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two elements or the interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0043] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0044] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and configurations of specific examples are described below. Of course, these are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or configurations discussed.

[0045] Furthermore, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the application of other processes and / or the use of other materials.

[0046] refer to Figures 1 to 6 As shown, the present invention discloses an opening and closing mechanism, 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;

[0047] The rear ends of the upper connecting member 1 and the lower connecting member 2 are pivotally connected, and a switch assembly is provided between the front ends of the two.

[0048] The lower connecting member 2 is provided with a through hole 21, and the upper connecting member 1 is provided with a protrusion 11 that matches the shape of the through hole 21; the protrusion 11 is smaller than the through hole 21 and is movably engaged in the through hole 21 as the upper connecting member 1 and the lower connecting member 2 are pivotally connected;

[0049] The sealing ring 3 includes a sealing ring body 31 fixedly fitted on the side wall of the through hole 21, and a hook portion 32 integrally connected to the lower edge of the inner side of the sealing ring body 31, with the groove of the hook portion 32 facing upward;

[0050] The lower surface periphery of the protruding portion 11 protrudes downward to form a flange 12 . As the upper connecting member 1 and the lower connecting member 2 are closed, the flange 12 abuts against the groove of the hook 32 and stretches the hook 32 away from the through hole 21 to deform it.

[0051] By the above scheme, the present application changes the sealing mode of the existing opening and closing assembly, in which the convex portion 11 is used to extrude the sealing ring 3 against the side wall of the through hole 21. When the opening and closing mechanism is in the closed state, the flange 12 will be inserted into the groove of the hook portion 32 and stretch the hook portion 32 downward, thereby tensioning the sealing ring 3 fixedly fitted on the side wall of the through hole 21 and deforming it in the direction of the convex portion 11. The elasticity of the sealing ring 3 itself acts on the flange 12, so that the hook portion 32 is tightly attached to the surface of the flange 12, thereby realizing the sealing cooperation between the hook portion 32 and the flange 12, that is, realizing the sealing cooperation between the upper connecting piece 1 and the lower connecting piece 2, and ensuring the sealing performance after the structure is closed. At the same time, since the upper connecting piece 1 mainly acts on the hook portion 32 in the axial direction of the through hole 21 and stretches the hook portion 32 in the direction away from the through hole 21, the sealing ring 3 as a whole does not generate friction force acting on the convex portion 11 in the axial direction of the through hole 21, so that the opening and closing of the opening and closing mechanism is easier, smoother and not jammed, and the user experience is better. Furthermore, the upper connecting piece 1 and the lower connecting piece 2 of the present application are still made of hard material and can be used as the shape frame of the heat preservation container. In the assembly process, it is more convenient to assemble and connect the cover body and the body of the heat preservation container, thereby improving the production efficiency and the yield.

[0052] Referring to Figures 1 to 5 , a first embodiment of the present application is shown.

[0053] The above-mentioned hard material is an injection moldable plastic; the sealing ring 3 is made of rubber, silicone, PVC, TPU or TPR material, etc.

[0054] The connecting portion 33 between the sealing ring body 31 and the hook portion 32 is provided, and the thickness of the connecting portion 33 is less than the thickness of the hook portion 32, generally 1 / 3-1 / 2 of the thickness of the hook portion 32, so that the hook portion 32 is more easily stretched by the flange 12 to avoid the phenomenon that the hook portion 32 slips off the flange 12 due to the flange 12 being unable to stretch the hook portion 32. It can be understood that the above-mentioned hook portion 32 and connecting portion 33 are both in the shape of a whole circle connected at the inner side of the sealing ring body 31. In the first embodiment, the thickness of the connecting portion 33 is 1mm.

[0055] The side wall of the above-mentioned through hole 21 is formed with a step 22, and the sealing ring body 31 is fixedly fitted on the step 22 by gluing or the like and tightly attached to the side wall of the through hole 21.

[0056] Furthermore, the upper surface of the sealing ring body 31 is higher than the upper surface of the lower connector 2, and a cavity 34 is provided within the sealing ring body 31. When the upper connector 1 and the lower connector 2 are closed, the lower surface of the upper connector 1 (located outside the protrusion 11) presses downward against the upper surface of the sealing ring body 31, deforming the cavity 34. This allows the upper surface of the sealing ring body 31 to fit tightly against the lower surface of the upper connector 1, achieving a secondary seal and further improving the sealing performance of the opening and closing mechanism. Furthermore, because the protrusion 11 itself is smaller than the through-hole 21, it provides space for the sealing ring body 31 to deform, minimizing friction between the sealing ring body 31 and the surrounding surface of the protrusion 11.

[0057] The lower end of the flange 12 is integrally connected to a bent portion 13, which bends and tilts toward the centerline of the protrusion 11. As the upper and lower connectors 1 and 2 close, the bent portion 13 abuts against the groove of the hook 32, stretching the hook 32 away from the through-hole 21 and deforming it. The tilt of the bent portion 13 generates a pulling force both downward and toward the centerline of the protrusion 11, thereby simultaneously stretching the hook 32 in both directions, achieving a better sealing effect.

[0058] The above-mentioned switch assembly includes a snap-fitting member 14 arranged at the front end of the upper connecting member 1, and a buckling portion 23 arranged at the front end of the lower connecting member 2. When the upper connecting member 1 and the lower connecting member 2 are closed, the snap-fitting member 14 is buckled on the buckling portion 23 to achieve detachable cooperation between the front end of the upper connecting member 1 and the front end of the lower connecting member 2.

[0059] Furthermore, the aforementioned latch 14 is fixedly connected to the lower surface of the front end of the upper connector 1; the front end of the lower connector 2 is provided with a clearance groove 24, and the buckle portion 23 is disposed within the clearance groove 24. When the upper connector 1 and the lower connector 2 are closed, the latch 14 fits within the clearance groove 24 and does not protrude from the front ends of the upper and lower connectors 1 and 2, thus maintaining a flat front end and achieving a flat surface of the thermal insulation container.

[0060] The rear end of the upper connecting member 1 and the rear end of the lower connecting member 2 can be pivotally connected via a rotating shaft or a hinge, depending on actual needs.

[0061] See also Figure 6 , shows a second embodiment of the present invention, mainly a cross-sectional view of the opening and closing mechanism.

[0062] The second embodiment differs from the first embodiment mainly in the mounting mode of the sealing ring 3, in particular, the second embodiment further comprises a fixing ring 4; the side wall of the through hole 21 is protruded to form a step 22, the upper surface of the step 22 is recessed to form a mounting groove 25; the outer side of the sealing ring body 31 is provided with a first positioning ring 35, the first positioning ring 35 is embedded in the mounting groove 25; the fixing ring 4 is matched on the upper surface of the step 22 and is buckled with the side wall of the through hole 21, for pressing and fixing the sealing ring body 31, so as to realize the positioning and mounting of the sealing ring 3 on the step 22.

[0063] Further, the upper surface of the sealing ring body 31 is provided with a second positioning ring 36, the lower surface of the fixing ring 4 is provided with a limiting groove 41 matched with the second positioning ring 36; the second positioning ring 36 is embedded in the limiting groove 41, so as to realize the mutual limiting between the sealing ring 3 and the fixing ring 4.

[0064] Meanwhile, the side wall of the through hole 21 is provided with a buckle groove 26; the circumferential surface of the fixing ring 4 is provided with a clamping hook 42 movably matched in the buckle groove 26, so as to realize the buckle connection between the fixing ring 4 and the side wall of the through hole 21, facilitating the dismounting of the fixing ring 4

[0065] Referring to Figure 7 , the third embodiment of the present application is shown, which discloses a heat preservation container, comprising the opening and closing mechanism, and the cover 5 and the body 6; the cover 5 is sealingly connected with the upper surface of the upper connecting piece 1; the lower connecting piece 2 is sealingly connected with the opening of the cavity of the body 6, and the through hole 21 is communicated to the cavity of the body 6.

[0066] In actual application, the body 6 is generally made into the shape of a box or a bag; or, the heat preservation container can be designed into two parts in other forms.

[0067] The above embodiments and drawings are not limited to the product shape and style of the present application, and any appropriate changes or modifications made by those skilled in the art shall be considered as not departing from the patent scope of the present application.

Claims

1. An opening and closing mechanism, characterized in that: It includes 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 upper connecting member and the rear end of the lower connecting member are pivotally connected, and a switch assembly is provided between the front ends of the two; The lower connecting member is provided with a through hole, and the upper connecting member is provided with a protrusion matching the shape of the through hole; the protrusion is smaller than the through hole and is movably fitted into the through hole as the upper connecting member and the lower connecting member are pivotally connected; The sealing ring includes a sealing ring body fixedly fitted on the side wall of the through hole, and a hook portion integrally connected to the lower edge of the inner side surface of the sealing ring body, with the groove of the hook portion facing upward; The lower surface of the protruding portion protrudes downward to form a flange, which abuts against the groove of the hook portion as the upper connecting member and the lower connecting member are closed, and stretches the hook portion in a direction away from the through hole to deform it; A connecting portion is provided between the sealing ring body and the hook portion, and the thickness of the connecting portion is smaller than the thickness of the hook portion; The lower end of the flange is integrally connected with a bent portion; the bent portion is bent and inclined toward the center line of the protruding portion; the bent portion abuts against the groove of the hook portion as the upper connecting member and the lower connecting member are closed, and stretches the hook portion in a direction away from the through hole to deform it; It also includes a fixing ring; the side wall of the through hole protrudes to form a circle of steps, and the upper surface of the step is recessed to form a mounting groove; a first positioning ring is provided on the lower edge of the outer side surface of the sealing ring body, and the first positioning ring is embedded in the mounting groove; the fixing ring is fitted on the upper surface of the step and is snap-connected to the side wall of the through hole for pressing and fixing the sealing ring body.

2. The opening and closing mechanism according to claim 1, wherein: The switch assembly includes a snap member arranged at the front end of the upper connecting member, and a buckling portion arranged at the front end of the lower connecting member. When the upper connecting member and the lower connecting member are closed, the snap member is buckled on the buckling portion.

3. The opening and closing mechanism according to claim 2, wherein: The snap fastener is fixedly connected to the lower surface of the front end of the upper connecting member; the front end of the lower connecting member is provided with a clearance groove, and the buckling portion is provided in the clearance groove.

4. The opening and closing mechanism according to claim 1, wherein: A second positioning ring is provided on the upper surface of the sealing ring body, and a limiting groove matching the second positioning ring is provided on the lower surface of the fixing ring; the second positioning ring is embedded in the limiting groove; a snap groove is provided on the side wall of the through hole; and a snap hook that movably fits in the snap groove is provided on the circumferential surface of the fixing ring.

5. The opening and closing mechanism according to any one of claims 1 to 3, characterized in that: The side wall of the through hole protrudes to form a circle of steps, and the sealing ring body is fixedly fitted on the steps and closely adheres to the side wall of the through hole.

6. The opening and closing mechanism according to claim 5, wherein: The upper surface of the sealing ring body is higher than the upper surface of the lower connecting piece, and a cavity is provided in the sealing ring body; when the upper connecting piece and the lower connecting piece are closed, the lower surface of the upper connecting piece presses the upper surface of the sealing ring body downward to deform the cavity.

7. A thermal insulation container comprising the opening and closing mechanism according to any one of claims 1 to 6, characterized in that: It also includes a cover and a body; the cover is sealed to the upper surface of the upper connecting piece; the lower connecting piece is sealed to the opening of the cavity of the body, and the through hole is connected to the cavity of the body.

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