CN110876545A - Heat insulation cup - Google Patents

Abstract

The invention belongs to the technical field of cups, and in particular relates to a thermos cup, comprising a thermos cup body, a thermos cup cover, a pusher, a sealing ring and a drive part; the drive part is installed on the upper end of the thermos cup cover, and the pusher is installed on the thermos cup cover the lower end; the upper end of the push piece is provided with at least one push rod, and the push rod moves through the insulation cup cover and is connected to the driving piece; the sealing ring is arranged between the insulation cup cover and the push piece; the insulation cup cover covers the cup mouth When the pusher is located in the cup mouth; a gap is formed between the inner wall of the cup mouth and the pusher, and the sealing ring is located in the gap; when the driving piece is pulled to drive the pusher to move upward, the gap is reduced and is The sealing ring is full, so that the lid of the thermos cup is sealed with the cup mouth; the driving part is pulled to drive the pusher to move downward, the sealing ring is elastically reset, and the sealing connection with the inner wall of the cup mouth of the thermos cup body is broken; open or It is very convenient to close the lid of the thermos, and the sealing of the thermos is good.

Description

a thermos cup

technical field

The invention belongs to the technical field of cups, and in particular relates to a thermos cup.

Background technique

A cup is a must for daily drinking water. At present, most thermos cups include a cup body and a cup lid that covers the cup mouth of the cup body; a sealing ring is arranged in the cup lid, and the cup lid and the cup mouth of the cup body are threadedly connected, so that the sealing ring is pressed against the cup body cup. Between the mouth and the lid of the cup to keep the inside of the cup warm. However, the threaded connection between the cup lid and the cup body requires the user to open or close the cup lid by rotating it for many times, which brings great inconvenience to opening or closing the cup lid. There are also some cup lids and cup body and cup mouths that are snap-fitted. Although the lid is easy to open, the sealing performance is poor, resulting in poor thermal insulation effect. Also, when the air pressure inside the cup is greater than or less than the outside air pressure, the threads of the cup mouth and the lid of the cup will be compressed, resulting in the lid needing a lot of force to open, making it inconvenient to open the lid.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a thermos cup, which aims to solve the threaded connection between the lid and the mouth of the cup body in the prior art. Or closing the lid of the cup brings great inconvenience to the technical problem.

In order to achieve the above purpose, the embodiment of the present invention provides a thermos cup, which includes a thermos cup body and a thermos cup lid that is closed on the mouth of the thermos cup body; and further includes:

a driving member, the driving member is installed on the upper end of the thermos cup cover;

a pusher, the pusher is mounted on the lower end of the thermos cup cover; the upper end of the pusher is provided with at least one push rod, the push rod movably passes through the thermos cup cover and is connected to the drive member; and

a sealing ring, which is made of elastic material and is arranged between the thermos cup cover and the pushing member;

When the thermos cup lid covers the cup mouth, the pusher is located in the cup mouth; a gap is formed between the inner wall of the cup mouth and the pusher, and the sealing ring is located in the gap; The driving member drives the pushing member to move upward, and the gap is reduced and filled by the sealing ring, so that the thermos cup lid and the cup mouth are sealedly connected; pulling the driving member drives the pushing member Moving downward, the sealing ring is elastically reset, breaking the sealing connection with the inner wall of the cup mouth of the thermos cup body.

Optionally, the sealing ring includes a first annular connecting portion; the first annular connecting portion is connected to the top inner wall of the thermos cup cover, and the first annular connecting portion extends downward from the first annular sealing portion; The outer diameter of the pusher tapers from bottom to top to form a conical push portion, the conical push portion abuts the inner side of the first annular sealing portion; the first annular sealing portion pushes the conical portion The part is bent outward under the push-up, filling the gap, and sealingly connected with the inner wall of the cup mouth of the thermos cup body.

Optionally, the outer wall ring of the first annular sealing portion is provided with a first sealing groove, the inner wall ring of the cup mouth is provided with an arc-shaped convex portion, and the first sealing groove is pushed by the conical pushing portion. The top and bottom are in sealing contact with the arc-shaped convex portion.

Optionally, the sealing ring includes a second annular connecting portion; the second annular connecting portion is connected with the top inner wall of the thermos cup cover, and the second annular connecting portion extends downward to a second annular sealing portion; The outer diameter of the top of the pushing member is reduced in steps to form a connecting portion, the second annular sealing portion is adapted to fit on the connecting portion, and the lower end of the second annular sealing portion is in contact with the pushing member. The inner wall of the cup mouth of the thermos cup body is provided with a sealing groove, and the second annular sealing portion protrudes to the outside under the pushing of the pushing member and is accommodated in the sealing groove.

Optionally, a second annular connecting protrusion is protruded from the lower end ring of the second annular sealing portion, a second annular connecting groove is dug on the step of the pusher, and the second annular connecting protrusion is inserted into the second annular connecting protrusion. in the second annular connecting groove.

Optionally, a first annular connecting groove is dug on the top of the sealing ring, a first annular connecting protrusion is protruded from the top inner wall of the thermos cup cover, and the first annular connecting protrusion is inserted into the in the first annular connecting groove.

Optionally, an annular sealing table extends outward from the top of the sealing ring, and the upper end surface of the annular sealing table is in contact with the inner wall of the top of the insulation cup cover; the insulation cup cover covers the insulation cup body cup. When the mouth is opened, the lower end surface of the annular sealing platform is in sealing contact with the end of the mouth of the thermos cup body.

Optionally, at least one elastic member is provided between the inner wall of the top of the thermos cup cover and the upper end of the pushing member.

Optionally, the drive member includes a drive plate; the end of the drive plate is provided with a pair of mounting seats, both of the mounting seats are provided with mounting grooves, and each of the mounting grooves is eccentrically provided with a connecting shaft, so that the adjacent two ends on the mounting seat respectively form a distal end and a proximal end; the upper end of the pusher is symmetrically provided with a pair of push rods, and the upper parts of the two push rods are provided with connecting holes, The connecting hole is rotatably connected to the connecting shaft; rotating the driving member drives the distal end of the mounting seat to abut the upper end surface of the thermos cup cover, thereby driving the pushing member to move up and push the The sealing ring is sealedly connected with the inner wall of the cup mouth of the thermos cup body; reversely rotating the drive member drives the proximal end of the mounting seat to abut the upper end surface of the thermos cup cover, thereby driving the push member Moving down, the sealing ring elastically resets and releases the sealing connection with the inner wall of the cup mouth of the thermos cup body.

Optionally, the distal end and the proximal end are both flat ends; the distal end is arranged in parallel with the drive plate, and the proximal end is located at the end of the drive plate and is connected to the drive plate. The driver board is set vertically.

Optionally, an accommodating groove is recessed on the top of the thermos cup cover, and the accommodating groove is provided with a first stepped groove and a second stepped groove that are reduced in steps; the bottom of the second stepped groove penetrates through A pair of through holes are provided, and the upper parts of the two push rods are respectively movable through the two through holes to be rotatably connected to the connecting shaft.

Optionally, the driving plate is semicircular; circular or elliptical through holes are formed through the driving plate.

Optionally, a one-way exhaust valve is provided in the middle of the pusher.

Optionally, the thermos cup further includes an outer cover; the outer cover is covered with the upper end of the thermos cup body, and the thermos cup cover is located inside the outer cover.

The above one or more technical solutions in the thermos cup provided by the embodiment of the present invention have at least one of the following technical effects: the lid of the thermos cup is covered on the mouth of the thermos cup body, and the driving member drives the pushing The component moves up, thereby reducing the gap between the mouth of the cup, the lid of the thermos cup and the pushing component. The sealing ring is bent outwards under the pushing of the pusher to fully fill the gap, so that the cup mouth and the thermos cup cover are sealed and connected, so as to seal the interior of the thermos cup body and achieve heat preservation. Similarly, the driving member drives the pushing member to move down, the gap between the cup mouth, the thermos cup cover and the pushing member increases, the sealing ring is elastically reset, and the cup mouth is released. A sealed connection with the thermos cup cover. Therefore, the thermos cup cover can be locked by rotating the drive plate downward, and the thermos cup cover can be opened by rotating the drive plate upward. It is very convenient to open or close the thermos cup cover, which solves the problem in the prior art. Some disadvantages of the threaded connection between the cup lid and the cup body.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for the present invention. In some embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a cross-sectional view of a thermos cup provided in Embodiment 1 of the present invention.

FIG. 2 is an exploded view of the thermos cup provided in the first embodiment of the present invention.

FIG. 3 is a diagram showing the locking state of the thermos cup lid of the thermos cup provided in the first embodiment of the present invention.

FIG. 4 is a state diagram of an open state of the thermos cup cover of the thermos cup provided in the first embodiment of the present invention.

FIG. 5 is a cross-sectional view of the thermos cup provided in the second embodiment of the present invention.

Among them, each reference sign in the figure:

Insulation cup body 100 , cup mouth 101 , arc-shaped convex portion 110 , elastic member 120 , insulation cup cover 200 , outer wall ring 201 , accommodating groove 202 , first annular connecting protrusion 210 , through hole 220 , first stepped groove 230 , the second stepped groove 240, the vertical groove 250, the pusher 300, the push rod 310, the connection hole 311, the tapered pusher 320, the connection part 330, the step 340, the second annular connection groove 350, the connection hole 360, the air hole 370, void 380, first installation 381, sealing ring 400, first annular connecting groove 410, first annular connecting portion 420, first annular sealing portion 430, first arc-shaped convex portion 440, second annular connecting portion 450, the second annular sealing portion 460, the second annular connecting protrusion 470, the annular sealing table 480, the driving member 500, the driving plate 510, the circular through hole 511, the mounting seat 520, the mounting groove 521, the connecting shaft 522, the distal shaft end 523 , proximal end 524 , one-way exhaust valve 600 , outer cover 700 .

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical" "," "horizontal", "top", "bottom", "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present invention and simplification It is described, rather than indicated or implied, that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the embodiments of the present invention, unless otherwise expressly specified and limited, terms such as “installation”, “connection”, “connection”, and “fixation” should be understood in a broad sense. For example, it may be a fixed connection or a It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of the two elements or the interaction relationship between the two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the embodiments of the present invention according to specific situations.

In an embodiment of the present invention, referring to FIG. 1 and FIG. 2 , a thermos cup is provided, including a thermos cup body 100 , a thermos cup cover 200 , a pushing member 300 , a sealing ring 400 and a driving member 500 .

Referring to FIGS. 1 and 2 , the thermos cup cover 200 is adapted to cover the cup opening 101 of the thermos cup body 100 . Specifically, the outer shell of the thermos cup body 100 is a double-layered shell structure, and a gap is formed between the two double-layered shells. Referring to FIG. 2 , the thermos cup cover 200 is a groove surrounded by an outer wall ring 201 and a top, and an accommodating groove 202 is formed in the middle of the top. When the thermos cup cover 200 covers the thermos cup body 100 , the cup mouth 101 is located between the outer wall ring 201 and the accommodating groove 202 . A plurality of vertical grooves 250 are evenly distributed on the outer wall ring 201 , and the vertical grooves 250 are arranged to facilitate the user to grasp the thermos cup cover 200 .

Referring to FIG. 1 , the driving member 500 is installed in the accommodating groove 202 , and the pushing member 300 is installed outside the accommodating groove 202 . The pushing member 300 is provided with at least one pushing rod 310 , and the pushing rod 310 is movable through the accommodating groove 202 and connected to the driving member 500 . The sealing ring 400 is disposed between the thermos cup cover 200 and the pushing member 300 . When the thermos cup cover 200 is closed on the thermos cup body 100 , the cup mouth 101 is inserted between the accommodating groove 202 and the outer wall ring 201 , and the pusher 300 is located in the cup mouth 101 . A gap is formed between the cup mouth 101 , the thermos cup cover 200 and the pusher 300 , and the seal 400 is located in the gap.

Referring to FIG. 1 , a first annular connecting groove 410 is dug at the top of the sealing ring 400 , and a first annular connecting protrusion 210 is protruded on the inner wall of the top of the thermos cup cover 200 . The lifter 210 is inserted into the first annular connecting groove 410 with an interference fit, so that the sealing ring 400 is stably connected to the top of the thermos cup cover 200 .

Referring to FIGS. 1 and 2 , the sealing ring 400 includes a first annular connecting portion 420 . The top of the first annular connecting portion 420 is provided with the first annular connecting groove 410 . The first annular connecting portion 420 extends downward from the first annular sealing portion 430 . The outer diameter of the push member 300 is tapered from bottom to top to form a conical push portion 320 , and the conical push portion 320 abuts against the inner side of the first annular sealing portion 430 . The driving member 500 drives the conical pushing portion 320 of the pushing member 300 to move upward, thereby narrowing the gap between the cup opening 101 , the thermos cup cover 200 and the pushing member 300 . The first annular sealing portion 430 is bent outward under the pushing of the conical pushing portion 320 to fully fill the gap, so that the cup mouth 101 and the thermos cup cover 200 are sealed and connected, thereby sealing the Inside the thermos cup body 100, heat preservation is achieved. Similarly, the driving member 500 drives the conical pushing portion 320 of the pushing member 300 to move down, and the gap between the cup mouth 101 , the thermos cup cover 200 and the pushing member 300 increases, so The first annular sealing portion 430 is elastically reset, and the sealing connection between the cup mouth 101 and the thermos cup cover 200 is released.

Preferably, the outer wall of the first annular sealing portion 430 is provided with a first sealing groove 440 , the inner wall of the cup mouth 101 of the thermos cup body 100 is provided with an arc-shaped convex portion 110 , and the first sealing groove 440 is in the The conical pushing portion 320 is in sealing contact with the arc-shaped convex portion 110 under the push-up position, so that the first annular sealing portion 430 and the arc-shaped convex portion 110 not only play a role of sealing connection, but also play the role of sealing connection. Snap-on effect, better sealing effect.

1 and 2 , an annular sealing table 480 extends outward from the top of the first annular connecting portion 420 of the sealing ring 400 , and the upper end surface of the annular sealing table 480 abuts against the top inner wall of the thermos cup cover 200 catch. When the thermos cup cover 200 covers the cup opening 101 of the thermos cup body 100, the lower end surface of the annular sealing table 480 is in sealing contact with the end of the cup aperture 101 of the thermos cup body 100, so that the sealing ring The sealing effect between 400 and the thermos cup body 100 is better.

Referring to FIGS. 2-4 , the driving member 500 includes a driving board 510 . The end of the drive plate 510 is provided with a pair of mounting seats 520 , both of the mounting seats 520 are provided with mounting slots 521 , and a pair of mounting holes are dug on both sides of each of the mounting slots 521 . The holes are eccentrically arranged in the mounting grooves 521 . A connecting shaft 522 is inserted into the two mounting holes, so that the two adjacent ends of the mounting seat 510 respectively form a distal end 523 and a proximal end 524. The connecting shaft 522 is arranged in parallel with the driving plate 510 . Preferably, the distal end 523 and the proximal end 524 are both straight ends. The distal end 523 is arranged parallel to the driving plate 510 , and the proximal end 524 is located at the end of the driving plate 510 and is arranged perpendicular to the driving plate 510 .

Referring to FIG. 2 , a pair of the push rods 310 is symmetrically provided on the upper end of the push member 300 , and the upper parts of the two push rods 310 are provided with connection holes 311 . A pair of through holes 220 are formed through the top of the accommodating slot 202 , the upper parts of the two push rods 310 are respectively movable through the two through holes 220 , and the two connecting shafts 522 are respectively rotatably connected to the two connecting shafts. hole 311.

Referring to FIGS. 1 and 3 , when the thermos cup cover 200 needs to be locked, the drive plate 510 is rotated downward to drive the distal end 523 of the mounting seat 520 to abut with the upper end surface of the thermos cup cover 200 . The two push rods 310 are moved up to drive the push members 310 to move up and push the sealing ring 400 to seal the gap, thereby sealingly connecting the thermos cup body 100 and the thermos cup cover 200 . Referring to FIGS. 1 and 4 , when the thermos cup cover 200 needs to be opened, the drive plate 510 is rotated upward to drive the proximal end 524 of the mounting seat 520 to abut with the upper end surface of the thermos cup cover 200, so that the two The position of the push rod 310 moves down, thereby driving the pusher 300 to move down, releasing the sealed connection between the thermos cup body 100 and the thermos cup cover 200, and at this time, the thermos cup cover can be removed 200.

Therefore, in the thermos cup described in the present application, the thermos cup cover 200 can be locked by rotating the drive plate 510 downward, and the thermos cup cover 200 can be opened by rotating the drive board 510 upward, and all The thermos cup cover 200 is very convenient, and solves some drawbacks in the prior art in which the cup cover and the cup body and the mouth of the cup are threadedly connected.

Referring to FIG. 3 , the accommodating groove 202 is provided with a first stepped groove 230 and a second stepped groove 240 that are reduced in steps. Preferably, the first stepped groove 230 and the second stepped groove 240 are cylindrical. A pair of the through holes 220 are formed through the bottom of the second stepped groove 240 . When the driving plate 510 is rotated downward to lock the thermos cup cover 200, the driving board 510 is arranged horizontally and is accommodated in the first stepped groove 230, so that the thermos cup is more beautiful.

1 and 5 , the pushing member 300 is installed on the accommodating groove 202 , and the upper end of the pushing member 300 is provided with an emptying groove 380 for evacuating the accommodating groove 202 . (Delete the reference numeral 260 in the drawing)

Referring to FIG. 3 and FIG. 4 , the driving plate 510 is in a semi-circular shape, and a circular or oval through hole 511 is formed through the driving plate 510 . The circular or elliptical through hole 511 is provided on the driving board 510 to facilitate the user to rotate the driving board 510 and to hold the thermos cup cover 200 by clasping the driving board 510 with fingers.

1 and 2 , at least one elastic member 120 is disposed between the accommodating groove 202 and the upper end of the pushing member 300 . Preferably, the elastic members 120 are provided as a pair. The elastic member 120 is a circular silica gel column with excellent elasticity. The pushing member 300 is provided with a pair of first installations 381 at the bottom of the hollow groove 380 , and the accommodating groove 202 is dug with two first installation grooves 381 corresponding to the two first installation grooves 381 on the bottom surface of the groove. Two installation grooves (not shown), two ends of the elastic member 120 are respectively inserted into the first installation groove 381 and the second installation groove. The elastic member 120 acts as a spring. When the thermos cup cover 200 is locked, the elastic member is in a pressed state. When the thermos cup lid 200 is opened, the elastic member 120 elastically resets and pushes the The pusher 300 moves down, so that the pusher 300 moves down smoothly, so as to prevent the pusher 300 from being stuck so that the thermos cup cover 200 cannot be opened.

Referring to FIGS. 1 and 5 , the bottom of each push rod 310 is sleeved with a gasket 390 . Correspondingly, each of the through holes 220 of the thermos cup cover 200 is formed with a gasket installation groove 270 . . When the driving plate 510 is rotated downward to lock the thermos cup cover 200 , the gasket 390 abuts in the gasket installation groove 270 , thereby sealing the through hole 220 and making the thermos cup Better thermal insulation.

Referring to FIG. 1 and FIG. 2 , a one-way exhaust valve 600 is disposed in the middle of the pushing member 300 . The one-way exhaust valve 600 includes an elastic valve portion 610 . The upper end of the elastic air valve portion 610 is provided with a connecting column 620 with a limiting portion 621 at the top. A connecting hole 360 is formed through the middle of the pushing member 300, and a pair of air holes 370 are further provided on both sides of the connecting hole 360 on the pushing member 300. The connecting post 620 is inserted into the connecting hole 360 and connected to the pushing member 300 through the limiting portion 621 . The elastic air valve portion 610 is in contact with the lower end surface of the pushing member 300 and covers the two air holes 370 . When the internal air pressure of the thermos cup body 100 is lower than the external air pressure, the driving plate 510 is rotated upward to open the thermos cup cover 200 , the external air will enter through the through hole 220 and push the elastic body through the air hole 370 The air valve part 610 forms a gap between the elastic air valve part 610 and the pusher 300, and the outside air enters the inside of the thermos cup body 100 from the gap, so as to balance the air pressure inside the thermos cup body 100 and the outside world, It is prevented that the thermos cup cover 200 cannot be opened. When the internal air pressure of the thermos cup body 100 is greater than the external air pressure, the driving plate 510 is rotated downward to lock the thermos cup cover 200. As the pusher 300 moves upward, the inner space of the thermos cup body 100 changes instantly. If it is large, the air pressure inside the thermos cup body 100 is reduced to prevent the thermos cup cover 200 from being pushed out during the locking process.

Referring to FIG. 3 , the thermos cup further includes an outer cover 700 . The outer cover 700 is closed on the upper end of the thermos cup body 100 , and the thermos cup cover 200 is located inside the outer lid 700 . The outer cover 700 can be used as a bowl and has strong practicability.

Preferably, the sealing ring 400 is configured as a silicone ring or a rubber ring.

Referring to FIG. 5 , in another embodiment of the present invention, the sealing ring 400 includes a second annular connecting portion 450 . The second annular connecting portion 450 is connected to the top inner wall of the thermos cup cover 200 . Specifically, the top of the second annular connecting portion 450 is provided with the first annular connecting groove 410 . The second annular connecting portion 450 extends downward from the second annular sealing portion 460 . The outer diameter of the top of the pushing member 300 is reduced in steps to form the connecting portion 330 , the second annular sealing portion 450 is adapted to be fitted on the connecting portion 330 , and the lower end of the second annular sealing portion 460 is connected to the connecting portion 330 . The step 340 of the pushing member 300 abuts against. The inner wall of the cup mouth 101 of the thermos cup body 100 is annularly provided with a sealing groove 120 .

Referring to FIG. 5 , the driving member 500 drives the pushing member 300 to move upward, and the second annular sealing portion 460 protrudes outward under the pushing of the pushing member 300 and is accommodated in the sealing groove 120 Inside, the second annular sealing portion 460 is sealedly connected with the inner wall of the cup mouth 101 of the thermos cup body 100, and the sealing ring 400 is also in sealing contact with the pusher 300, so that the thermos cup body 100 Internally sealed for thermal insulation. Similarly, the driving member 500 drives the pushing member 300 to move down, and the second annular sealing portion 460 elastically resets away from the sealing groove 120 . The thermos cup cover 200 is described.

Referring to FIG. 5 , a second annular connecting protrusion 470 is protruded from the lower end of the second annular sealing portion 460 , and a second annular connecting groove 350 is dug in the step 340 of the pushing member 300 . The protrusion 470 is inserted into the second annular connecting groove 350 to connect the sealing ring 400 and the pushing member 300 stably.

The above content is a further detailed description of the present invention in combination with specific preferred embodiments, and it cannot be considered that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art to which the present invention pertains, without departing from the concept of the present invention, its architectural form can be flexible and changeable, and a series of products can be derived. Just making some simple deductions or substitutions should be regarded as belonging to the scope of patent protection of the present invention determined by the submitted claims.

Claims (14)

1. A vacuum cup comprises a vacuum cup body and a vacuum cup cover covering the cup opening of the vacuum cup body; it is characterized by also comprising:

the driving piece is arranged at the upper end of the heat-preservation cup cover;

the pushing piece is arranged at the lower end of the heat-preservation cup cover; the upper end of the pushing piece is provided with at least one pushing rod, and the pushing rod movably penetrates through the heat-preservation cup cover to be connected with the driving piece; and

the sealing ring is made of elastic materials and is arranged between the heat-preservation cup cover and the pushing piece;

when the heat-preserving cup cover covers the cup opening, the pushing piece is positioned in the cup opening; a gap is formed between the inner wall of the cup mouth and the pushing piece, and the sealing ring is positioned in the gap; pulling the driving piece to drive the pushing piece to move upwards, and reducing the gap and filling the gap with the sealing ring, so that the heat-preservation cup cover is in sealing connection with the cup opening; pulling the driving piece to drive the pushing piece to move downwards, and the sealing ring is elastically reset to break the sealing connection with the inner wall of the cup opening of the heat-preservation cup body.

2. A thermos cup according to claim 1, wherein: the seal ring comprises a first annular connecting portion; the first annular connecting part is connected with the inner wall of the top of the heat-insulating cup cover, and a first annular sealing part extends downwards from the first annular connecting part; the outer diameter of the pushing piece is gradually reduced from bottom to top to form a conical pushing part, and the conical pushing part is abutted against the inner side of the first annular sealing part; the first annular sealing part is outwards bent under the pushing of the conical pushing part to fill the gap and is in sealing connection with the inner wall of the cup opening of the heat-preservation cup body.

3. A thermos cup according to claim 2, characterized in that: the outer wall ring of first annular sealing portion is equipped with first seal groove, the inner wall ring of rim of a cup is equipped with the arc convex part, first seal groove be in under the ejection of toper promotion portion with the sealed butt of arc convex part.

4. A thermos cup according to claim 1, wherein: the seal ring comprises a second annular connecting part; the second annular connecting part is connected with the inner wall of the top of the heat-insulating cup cover, and a second annular sealing part extends downwards from the second annular connecting part; the outer diameter of the top of the pushing piece is reduced in a stepped manner to form a connecting part, the second annular sealing part is sleeved on the connecting part in a matching manner, and the lower end of the second annular sealing part is abutted to the pushing piece; the inner wall of the cup opening of the heat-preservation cup body is annularly provided with a sealing groove, and the second annular sealing part protrudes outwards under the pushing of the pushing piece and is contained in the sealing groove.

5. A thermos cup according to claim 4, characterized in that: the lower end of the second annular sealing part is annularly and convexly provided with a second annular connecting bulge, the step of the pushing part is dug to be provided with a second annular connecting groove, and the second annular connecting bulge is inserted into the second annular connecting groove.

6. A thermos cup according to claim 1, wherein: the top of sealing washer is dug and is equipped with a first annular spread groove, the protruding first annular of being equipped with of top inner wall of heat preservation bowl cover is connected the arch, first annular is connected the arch peg graft in first annular spread groove.

7. A thermos cup according to claim 6, characterized in that: an annular sealing table extends outwards from the top of the sealing ring, and the upper end face of the annular sealing table is abutted against the inner wall of the top of the vacuum cup cover; when the heat-preservation cup cover covers the rim of the heat-preservation cup body, the lower end face of the annular sealing platform is in sealing butt joint with the end part of the rim of the heat-preservation cup body.

8. A thermos cup according to claim 1, wherein: at least one elastic piece is arranged between the inner wall of the top of the vacuum cup cover and the upper end of the pushing piece.

9. A thermos cup according to any of claims 1-8, characterized in that: the drive member includes a drive plate; the end part of the driving plate is provided with a pair of mounting seats, the two mounting seats are respectively provided with mounting grooves, and a connecting shaft is eccentrically arranged in each mounting groove, so that a far shaft end and a near shaft end are respectively formed at two adjacent ends of the mounting seats; the upper end of the pushing piece is symmetrically provided with a pair of pushing rods, the upper parts of the two pushing rods are both provided with connecting holes, and the connecting holes are rotatably connected to the connecting shaft; the driving piece is rotated to drive the far shaft end of the mounting seat to abut against the upper end face of the heat-preservation cup cover, so that the driving piece is driven to move upwards and push the sealing ring to be in sealing connection with the inner wall of the cup opening of the heat-preservation cup body; and reversely rotating the driving piece to drive the shaft end close to the mounting seat to abut against the upper end surface of the heat-insulating cup cover, so as to drive the pushing piece to move downwards, and elastically resetting the sealing ring and removing the sealing connection with the inner wall of the cup opening of the heat-insulating cup body.

10. A thermos cup according to claim 9, wherein: the distal shaft end and the proximal shaft end are both straight ends; the far shaft end is arranged in parallel with the driving plate, and the near shaft end is positioned at the end part of the driving plate and is arranged perpendicular to the driving plate.

11. A thermos cup according to claim 9, wherein: the top of the heat-preservation cup cover is concavely provided with a containing groove, and a first stepped groove and a second stepped groove which are reduced in a stepped manner are arranged in the containing groove; the bottom of the second step groove is provided with a pair of through holes in a penetrating mode, and the upper portions of the two push rods respectively movably penetrate through the two through holes to be connected with the connecting shaft in a rotating mode.

12. A thermos cup according to claim 9, wherein: the driving plate is semicircular; a circular or oval through hole penetrates through the driving plate.

13. A thermos cup according to any of claims 1-8, characterized in that: the middle part of the pushing piece is provided with a one-way exhaust valve.

14. A thermos cup according to any of claims 1-8, characterized in that: the vacuum cup also comprises an outer cover; the outer cover covers the upper end of the heat-preservation cup body, and the heat-preservation cup cover is located in the outer cover.

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