A self-priming sealed heat-insulating cover

Abstract

The present invention discloses a self-inhalation sealed heat-insulating cover, comprising an outer cover and an inner cover which are press-fitted, a mounting hole being provided in the middle of the inner cover, an inner plug being fixedly mounted in the mounting hole, a concave cavity being provided in the middle of the inner plug, a sealed cavity being formed between the concave cavity and the outer cover, an automatic air-inhalation sealing mechanism being installed in the concave cavity, the sealing mechanism comprising an air-inhalation chamber surrounded by a shell and arranged in the concave cavity, the air-inhalation chamber being separated from the sealed chamber as an independent chamber, an air inlet of the air-inhalation chamber being located on the side wall of the inner plug at a corresponding position thereof, an air-permeable hole and a fixing hole for fixing a sealing gasket being provided on the bottom end surface of the air-permeable chamber, a disc-shaped sealing gasket for sealing the air-permeable hole being fixedly installed in the fixing hole. The present invention changes the structure of the traditional cover body, and through the structure of the sealed cavity in the inner plug, the heat exchange between the cup body and the outside air can be reduced, thereby prolonging the heat-insulating time, and at the same time, when the heat is dissipated to the point where the air pressure in the cup is lower than the outside pressure, it is convenient to open.

Description

Technical Field

[0001] The invention relates to the field of heat-insulating sealing covers, and mainly to a self-air-suction type sealed heat-insulating cover. Background Art

[0002] At present, although the thermal insulation lids on the market adopt a double-layer structure and a sealing structure, which have a certain thermal insulation effect, they are only separated from the inner cavity of the cup lid and the outside space by the lid bodies on both sides. They have fast heat conduction and poor thermal insulation effect. Moreover, during use, after the cup is filled with hot water, the cup lid is directly covered, and the pressure inside the cup lid exceeds the external pressure. In this case, after the temperature inside the cup drops, the cup lid is prone to negative pressure and is difficult to open. Therefore, it is necessary to improve the cup lid structure so that it can solve the problems of thermal insulation performance and easy opening, thereby improving the use value of the thermal insulation cup. Summary of the invention

[0003] The purpose of the present invention is to make up for the defects of the existing technology and provide a self-air-priming sealed heat-insulating cover: the structure of the traditional cover body is changed, and the heat exchange between the cup body and the outside air is reduced through the structural combination of the closed cavity in the inner plug and the sealing ring on the side wall of the inner plug, thereby extending the heat preservation time. At the same time, when the heat is dissipated to the point that the air pressure in the cup is lower than the external pressure, it is easy to open.

[0004] The present invention is achieved through the following technical solutions:

[0005] A self-air-inhaling sealed heat-insulating cover comprises an outer cover and an inner cover which are press-fitted, a mounting hole being provided in the middle of the inner cover, an inner plug being fixedly mounted in the mounting hole, a concave cavity being provided in the middle of the inner plug, a closed cavity being formed between the concave cavity and the outer cover, a sealing mechanism for automatic air intake being installed in the concave cavity, the sealing mechanism comprising an air intake chamber which is arranged in the concave cavity and surrounded by a shell, the air intake chamber is separated from the sealing chamber as an independent chamber, an air inlet of the air intake chamber is located on the side wall of the inner plug at a corresponding position thereof, an air vent and a fixing hole for fixing a sealing gasket being provided on the bottom end surface of the air intake chamber, a disc-shaped sealing gasket for sealing the air vent being fixedly mounted in the fixing hole, a sealing groove being provided on the outer side surface of the bottom end portion of the inner plug, a first sealing ring being fixedly mounted in the sealing groove.

[0006] The inner side wall of the bottom end of the outer cover is provided with convex ribs protruding inward at intervals, and a limiting boss for clamping the inner cover is provided between the convex ribs. The outer side wall of the bottom end of the inner cover is provided with a limiting ring cooperating with the limiting boss, and the limiting ring is provided with a clamping groove cooperating with the convex rib on the outer cover.

[0007] A limiting convex rib is provided on the outer side wall at the upper port of the inner plug, and the limiting convex rib is engaged with the boss at the upper port of the inner cover in a limiting manner.

[0008] A slot is provided at the upper port of the inner plug cavity, a step surface is provided on the outer side of the upper end of the inner plug, a limit block is provided on the step surface, and an insert block matching the slot is provided at the upper port of the inner cover.

[0009] A second sealing ring is clamped between the upper end surface of the step surface and the inner cover, and a limiting step for limiting the second sealing ring is provided on the inner end surface of the inner cover.

[0010] The air suction chamber is a hollow cavity structure surrounded by an upper panel, a side panel and a bottom panel. The upper panel, the side panel and the bottom panel are an integral structure with the inner plug and are integrated by injection molding.

[0011] The bottom panel is located above the bottom end surface of the inner plug, and an installation cavity for clamping a disc-shaped sealing gasket is formed between the bottom of the bottom panel and the side panel. An annular boss that cooperates with the disc-shaped sealing gasket is provided on the upper end surface of the installation cavity, and the air vent and fixing hole are both located in the annular boss.

[0012] An auxiliary cover plate cooperating with the installation cavity is installed in the installation cavity, and an air vent is provided on the side of the auxiliary cover plate facing the inner plug side wall, and limiting protrusions are provided on both sides of the air vent, and a limiting groove that engages with the limiting protrusion is provided on the inner plug side wall in the installation cavity.

[0013] A limiting protrusion is provided on the side walls on both sides of the air vent of the auxiliary cover plate, a limiting groove is provided on the inner wall of the inner plug in the installation cavity to cooperate with the limiting protrusion, a limiting protrusion is provided on the side wall at the rear end of the auxiliary cover plate, and a limiting groove is provided on the inner wall of the installation cavity to cooperate with the limiting protrusion.

[0014] A buffer groove is provided in the middle of the first sealing ring, the notch of the buffer groove opens downward, and the outer side surface of the buffer groove is slightly inclined inward.

[0015] The principle is: the structure of the traditional lid body is changed, through the structure of the inner plug, the sealing ring on the side of the inner plug and the sealing mechanism of the automatic air intake in the inner plug, on the one hand, the closed cavity in the inner plug can reduce the heat exchange between the cup body and the outside air, thereby extending the insulation time and making the insulation performance of the thermos cup better; on the other hand, when the heat is dissipated to the point that the air pressure in the cup is lower than the outside pressure, the disc-shaped sealing gasket is concave downward, and the air circulation in the closed cavity inhales air to achieve pressure balance, making it easy to open.

[0016] The advantages of the present invention are:

[0017] The structural design of the present invention is reasonable, and the structure of the traditional cover body is changed. Through the structural combination of the closed cavity in the inner plug and the sealing ring on the side wall of the inner plug, the heat exchange between the cup body and the outside air can be reduced, thereby extending the heat preservation time. At the same time, when the heat is dissipated to the point that the air pressure in the cup is lower than the outside pressure, it is easy to open. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention.

[0019] Figure 2 Schematic diagram of the structure of the outer cover.

[0020] Figure 3 It is a schematic diagram of the structure of the inner cover.

[0021] Figure 4 It is a schematic diagram of the structure of the inner plug.

[0022] Figure 5 It is a structural schematic diagram of the auxiliary cover.

[0023] Figure 6 It is a schematic diagram of the structure of a disc-shaped sealing gasket.

[0024] Figure 7 This is a schematic diagram of the structure of the inner plug from another angle.

[0025] Figure 8 Schematic diagram of the cross-sectional structure of the sealing ring.

[0026] Reference numerals:

[0027] 1. Outer cover; 2. Inner cover; 3. Inner plug; 4. Concave cavity; 5. Intake chamber; 6. Ventilation hole; 7. Fixing hole; 8. Disc-shaped sealing gasket; 9. Raised rib; 10. Limiting boss; 11. Limiting ring; 12. Limiting rib; 13. Slot; 14. Step surface; 15. Limiting block; 16. Second sealing ring; 17. Limiting step; 18. Installation cavity; 19. Auxiliary cover; 20. Ventilation port; 21. Limiting protrusion 1; 22. Limiting slot 1; 23. First sealing ring; 24. Sealing groove; 25. Annular boss; 26. Buffer groove. DETAILED DESCRIPTION

[0028] See attached picture.

[0029] A self-inhaling sealed heat-insulating cover comprises an outer cover 1 and an inner cover 2 which are press-fitted, a mounting hole being provided in the middle of the inner cover 2, an inner plug 3 being fixedly mounted in the mounting hole, a concave cavity 4 being provided in the middle of the inner plug 3, a closed cavity being formed between the concave cavity 4 and the outer cover 1, a sealing mechanism for automatic air suction being installed in the concave cavity 4, the sealing mechanism comprising an air suction chamber 5 which is arranged in the concave cavity 4 and surrounded by a shell, the air suction chamber 5 is separated from the sealing cavity as an independent chamber, an air inlet of the air suction chamber 5 is located on the side wall of the inner plug 3 at its corresponding position, an air vent 6 and a fixing hole 7 for fixing a sealing gasket are provided on the bottom end surface of the air suction chamber 5, a disc-shaped sealing gasket 8 for sealing the air vent is fixedly mounted in the fixing hole 7, a sealing groove is provided on the outer side surface of the bottom end portion of the inner plug 3, a first sealing ring 23 is fixedly mounted in the sealing groove; the structure of the first sealing ring ensures the sealing performance between the inner plug and the cup body during use.

[0030] Furthermore, convex ribs 9 are arranged on the inner side wall of the bottom end of the outer cover 1, and limiting bosses 10 for clamping the inner cover are arranged between the convex ribs 9. A limiting ring 11 cooperating with the limiting boss 10 is arranged on the outer side wall of the bottom end of the inner cover 2, and a clamping groove cooperating with the convex rib on the outer cover 1 is arranged on the limiting ring 11; the convex rib and limiting boss of the outer cover are clamped together with the limiting ring and the clamping groove of the inner cover to achieve a fixed connection between the two, and the assembly is convenient and easy to operate.

[0031] Furthermore, a limiting convex rib 12 is provided on the outer wall at the upper port of the inner plug 3, and the limiting convex rib 12 is clamped and limited with the boss at the upper port of the inner cover 2; the clamping and fitting of the limiting convex rib of the inner plug and the boss of the inner cover assists the compression connection and fixation of the inner cover and the inner plug. A slot 13 is provided at the upper port of the concave cavity of the inner plug 3, a step surface 14 is provided on the outer side of the upper end of the inner plug 3, and a limiting block 15 is provided on the step surface 14, and an insert block matching with the slot 13 is provided at the upper port of the inner cover 2; the clamping and fixing of the inner plug and the inner cover is realized through the structure of the step surface, and the direct clamping and limiting of the inner plug and the inner cover are realized through the slot and the insert block. A second sealing ring 16 is clamped between the upper end surface of the step surface 14 and the inner cover 2, and a limiting step 17 for limiting the second sealing ring is provided on the inner end surface of the inner cover 2; the sealing between the inner plug and the inner cover is realized through the structure of the second sealing ring, and the stability of the clamping of the second sealing ring is ensured through the structure of the limiting step on the inner cover.

[0032] Furthermore, the air intake chamber 5 is a hollow cavity structure surrounded by an upper panel, a side panel and a bottom panel. The upper panel, the side panel and the bottom panel are an integrated structure with the inner plug 3, and are integrated by injection molding. The air intake chamber is arranged in a concave cavity in the inner cavity, and the space of the concave cavity is reasonably used. At the same time, direct injection molding is convenient for processing, so that the air intake chamber is separated from the closed cavity, and the sealing and heat conductivity between them is good. The bottom panel is located above the bottom end surface of the inner plug 3, and the bottom of the bottom panel and the side panels form an installation cavity 18 for clamping a disc-shaped sealing gasket. The upper end surface of the installation cavity 18 is provided with an annular boss that cooperates with the disc-shaped sealing gasket 8, and the air vent 6 and the fixing hole 7 are both located in the annular boss; through the structure of the installation cavity, it is used to accommodate the disc-shaped sealing gasket, and at the same time, it is convenient for the installation and fixation of the disc-shaped sealing gasket. An auxiliary cover plate 19 cooperating with the installation cavity 18 is installed in the installation cavity 18, and a vent 20 is provided on the side of the auxiliary cover plate 19 facing the side wall of the inner plug 3; through the structure of the auxiliary cover plate, on the one hand, it is ensured that when in use, the gas in the cup body directly contacts with the disc-shaped sealing gasket to protect the disc-shaped sealing gasket, and on the other hand, it can be used to limit the disc-shaped sealing gasket to avoid it from falling off during the force application process.

[0033] Furthermore, a limiting protrusion 21 is provided on the side walls on both sides of the air vent 20 of the auxiliary cover 19, a limiting groove 1 cooperating with the limiting protrusion 21 is provided on the inner wall of the inner plug in the installation cavity 18, a limiting protrusion 22 is provided on the side wall at the rear end of the auxiliary cover 19, and a limiting groove 2 cooperating with the limiting protrusion 22 is provided on the inner wall of the installation cavity 18; the structure of the limiting protrusions 1 and 2 at the front and rear ends of the auxiliary cover facilitates the installation of the auxiliary cover, and the auxiliary cover can be directly buckled into the installation cavity. The auxiliary cover is opened by inserting the auxiliary tool into the air vent, and the auxiliary cover can be directly tilted up, which is convenient for cleaning the butterfly sealing gasket after long-term use or installing the butterfly sealing gasket when it falls off.

[0034] Furthermore, a buffer groove 26 is provided in the middle of the first sealing ring 23, the notch opening of the buffer groove 26 is downward, and the outer side surface of the buffer groove 26 is slightly inclined inward; through the structure of the buffer groove, when the temperature inside the cup body or the pot body is high, according to the characteristics of thermal expansion and contraction, the first sealing ring can be closer to the inner wall of the cup body or the pot body, and the sealing and heat preservation performance is better. At the same time, the buffer groove has a certain buffering property, which reduces the fit between the first sealing ring and the inner wall of the cup body or the pot body, thereby facilitating opening.

[0035] The specific installation and use process of the above structure is: first, embed the inner cover into the outer cover, and then clamp and fix the inner plug in the inner cover. After the inner plug is fixed, install the butterfly sealing gasket in the fixing hole. During use, the bottom end of the inner cover is screwed to the mouth of the cup or the pot. After screwing, due to the relatively high temperature in the cup body or the pot body, the temperature in the cup body or the pot body will enter the installation cavity from the air inlet of the auxiliary cover plate, and then enter the air intake cavity from the air vent of the installation cavity. At this time, the disc-shaped sealing gasket will be forced upward, and the edge of the disc-shaped sealing gasket will be tightly sealed with the annular boss in the installation cavity, thereby preventing the heat exchange between the closed cavity above it and the cup body, thereby playing the role of a partition. When the heat of the cup body is dissipated to the cup or the pot and the air pressure is lower than the external pressure, the disc-shaped sealing gasket is pressed downward by the upper pressure and is not sealed with the annular boss, and the air circulation in the closed cavity inhales air to achieve pressure balance, which is convenient for opening.

[0036] In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-priming sealed heat-insulating cover, comprising an outer cover (1) and an inner cover (2) which are press-fitted, characterized in that: The inner cover (2) is provided with a mounting hole in the middle, an inner plug (3) is fixedly mounted in the mounting hole, a concave cavity (4) is provided in the middle of the inner plug (3), a closed cavity is formed between the concave cavity (4) and the outer cover (1), an automatic air suction sealing mechanism is installed in the concave cavity (4), the sealing mechanism comprises an air suction chamber (5) arranged in the concave cavity (4) and surrounded by a shell, the air suction chamber (5) is separated from the sealing chamber to form an independent chamber, an air inlet of the air suction chamber (5) is located on the side wall of the inner plug (3) at a corresponding position, an air vent (6) and a fixing hole (7) for fixing a sealing gasket are provided on the bottom end surface of the air suction chamber (5), a disc-shaped sealing gasket (8) for sealing the air vent is fixedly mounted in the fixing hole (7), a sealing groove (24) is provided on the outer side surface of the bottom end of the inner plug (3), a first sealing ring (23) is fixedly mounted in the sealing groove (24).

2. The self-priming sealed heat-insulating cover according to claim 1, characterized in that: The inner side wall of the bottom end of the outer cover (1) is provided with convex ribs (9) protruding inwardly at intervals, and a limiting boss (10) for clamping the inner cover is provided between the convex ribs (9). The outer side wall of the bottom end of the inner cover (2) is provided with a limiting ring (11) cooperating with the limiting boss (10), and the limiting ring (11) is provided with a clamping groove cooperating with the convex rib on the outer cover (1).

3. The self-priming sealed heat-insulating cover according to claim 1, characterized in that: A limiting convex rib (12) is provided on the outer side wall at the upper end of the inner plug (3), and the limiting convex rib (12) is engaged with the boss at the upper end of the inner cover (2) in a limiting manner.

4. The self-priming sealed heat-insulating cover according to claim 1, characterized in that: A slot (13) is provided at the upper end of the concave cavity of the inner plug (3), a step surface (14) is provided on the outer side of the upper end of the inner plug (3), a limit block (15) is provided on the step surface (14), and an insert block matching the slot (13) is provided at the upper end of the inner cover (2).

5. The self-priming sealed heat-insulating cover according to claim 4, characterized in that: A second sealing ring (16) is clamped between the upper end surface of the step surface (14) and the inner cover (2), and a limiting step (17) for limiting the second sealing ring is provided on the inner end surface of the inner cover (2).

6. The self-priming sealed heat-insulating cover according to claim 1, characterized in that: The air intake chamber (5) is a hollow cavity structure surrounded by an upper panel, a side panel and a bottom panel, and the upper panel, the side panel and the bottom panel are an integral structure with the inner plug (3) and are formed into one piece by injection molding.

7. The self-priming sealed heat-insulating cover according to claim 6, characterized in that: The bottom panel is located above the bottom end surface of the inner plug (3), and a mounting cavity (18) for mounting a disc-shaped sealing gasket is formed between the bottom of the bottom panel and the side panel. An annular boss (25) cooperating with the disc-shaped sealing gasket (8) is provided on the upper end surface of the mounting cavity (18), and the air vent (6) and the fixing hole (7) are both located in the annular boss (25).

8. The self-priming sealed heat-insulating cover according to claim 7, characterized in that: An auxiliary cover plate (19) which is buckled with the installation cavity (18) is installed in the installation cavity (18), and a ventilation opening (20) is provided on a side of the front end of the auxiliary cover plate (19) facing the side wall of the inner plug (3).

9. The self-air-inhaling sealed heat-insulating cover according to claim 8, characterized in that: A limiting protrusion (21) is provided on the side walls on both sides of the air vent (20) of the auxiliary cover plate (19), a limiting groove (21) is provided on the inner side wall of the inner plug in the installation cavity (18) and cooperates with the limiting protrusion (21), a limiting protrusion (22) is provided on the side wall at the rear end of the auxiliary cover plate (19), and a limiting groove (2) is provided on the inner side wall of the installation cavity (18) and cooperates with the limiting protrusion (22).

10. The self-priming sealed heat-insulating cover according to claim 1, characterized in that: A buffer groove (26) is provided in the middle of the first sealing ring (23), the notch opening of the buffer groove (26) faces downward, and the outer side surface of the buffer groove (26) is arranged to be slightly inclined inwards.

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