Air-exhausting and quick-opening cup cover

Abstract

The invention discloses an exhaust quick-opening cup cover which is characterized in that a base, an outer cover and an inner plug are encircled to form a cavity, and the base is inserted into a cup opening; the outer cover is arranged above the base and is connected with the base in a lifting manner; the inner plug is arranged below the base and connected with the base in a lifting mode, and a bottom plate of the inner plug is provided with exhaust holes. The upper and lower ends of the flexible sealing sleeve are respectively connected with the base and the inner plug; the exhaust valve is used for opening and closing the exhaust hole; the driving mechanism is arranged in the inner cavity and can link the lifting of the outer cover, the inner plug and the exhaust valve; the locking mechanism is movably arranged on the outer cover, and the locking mechanism and the base are locked in a clamped mode and unlocked in a separated mode; when the cover is closed, the outer cover moves downwards, the driving mechanism drives the exhaust valve to seal the exhaust hole, the inner plug is pulled to ascend to extrude the flexible sealing sleeve to form a sealing blocking part which abuts against the inner wall of the cup body for sealing and limiting, and the locking mechanism and the base are clamped and locked. When the cover is opened, the locking mechanism is separated from the base, the outer cover ascends, the driving mechanism is linked with the exhaust valve to move downwards to open the exhaust hole, the inner plug is driven to move downwards, and the flexible sealing sleeve is relieved from deformation and restored.

Description

Technical Field

[0001] The invention belongs to the technical field of water cups, and in particular relates to an exhaust quick-opening cup cover. Background Art

[0002] In the prior art, the connection between the cup body and the cup lid of the thermos cup mostly adopts a threaded structure, which requires multiple turns to unscrew or tighten, which is cumbersome to operate and cannot be opened quickly; moreover, most of the cup lids do not have a venting structure, which can easily cause the cup lid to be adsorbed on the cup mouth due to the negative pressure in the cup, making it difficult to open the lid. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a quick-opening exhaust cup cover.

[0004] To achieve the above purpose, the present invention adopts the following technical solution.

[0005] A quick-opening exhaust cup cover comprises a base, an outer cover and an inner plug, which are enclosed to form a cavity, wherein the base is inserted into the cup mouth in a restricted downward direction; the outer cover is arranged above the base and is connected to the base in a lifting manner; the inner plug is arranged below the base and is connected to the base in a lifting manner, and the bottom plate thereof is also provided with an exhaust hole; the upper and lower ends of the flexible sealing sleeve are respectively connected to the base and the inner plug; the exhaust valve is used to open and close the exhaust hole; the driving mechanism is arranged in the inner cavity and can link the lifting and lowering of the outer cover, the inner plug and the exhaust valve; the locking mechanism is movably arranged on the outer cover and is used to lock with the base When the lid is closed, it is locked and when the lid is disengaged, it is unlocked; when the lid is closed, the outer lid moves downward, and the exhaust valve is driven to seal the exhaust hole through the driving mechanism. At the same time, the exhaust valve pulls the inner plug up to squeeze the flexible sealing sleeve to deform and expand and bend outward to form a sealing barrier. The outer diameter of the sealing barrier is larger than the inner diameter of the cup mouth, and it contacts and seals with the inner wall of the cup body and limits the position. At the same time, the locking mechanism is engaged and locked with the base; when the lid is opened, the locking mechanism is disengaged and unlocked from the base, the outer lid rises, and the driving mechanism links the exhaust valve to move down to open the exhaust hole, and at the same time drives the inner plug down, and the flexible sealing sleeve is released from deformation and restored.

[0006] Preferably, the driving mechanism includes a gear-cam assembly, a rack and a connecting rod; the gear-cam assembly is rotatably connected to the base, with a gear at the upper end and a cam at the lower end; the rack is vertically arranged on the outer cover and meshes with the gear; the upper and lower ends of the connecting rod are rotatably connected to the cam and the exhaust valve respectively.

[0007] Preferably, the connecting rod includes a first connecting rod, a second connecting rod and a latch; the upper and lower ends of the first connecting rod are respectively provided with an upper plug rod and a lower plug rod facing the second connecting rod; the second connecting rod is correspondingly provided with an upper plug hole and a lower plug hole; the upper plug rod and the lower plug rod are vertically penetrated with connecting holes; the upper plug rod passes through the cam through-hole and the upper plug hole on the cam in sequence, and the lower plug rod passes through the valve through-hole and the lower plug hole on the exhaust valve in sequence, and the two ends of the latch are respectively inserted into the connecting holes of the upper plug rod and the lower plug rod.

[0008] Preferably, the exhaust valve includes a valve body and a valve sealing ring; the valve through hole is provided at the upper end of the valve body and is placed above the exhaust hole; the valve sealing ring is sleeved on the valve body and is placed below the exhaust hole for sealing the exhaust hole.

[0009] Preferably, the valve body comprises a valve stem and a valve seat from top to bottom; the valve through hole is arranged at the upper end of the valve stem; the valve sealing ring is sleeved on the valve stem and abuts against the valve seat; the valve stem moves up and down in the exhaust hole, and an exhaust channel is provided between the exhaust hole and the valve stem; the outer diameter of the valve seat is larger than the valve stem; and the outer diameter of the valve sealing ring is larger than the exhaust hole.

[0010] Preferably, the locking mechanism includes two buttons that are restricted from sliding inward and outward and are arranged in sliding holes on both sides of the outer cover; it also includes a button spring arranged between the button and the outer cover to provide elastic restoring force for the button; one end of the button is provided with a radially outward undercut and extends into the movable hole, and the other end is a pressing part exposed outside the movable hole; the base is correspondingly provided with a radially inward buckle and the undercut cooperates to lock.

[0011] Preferably, the base includes a main body, which is an annular structure that passes through from top to bottom and can be inserted into the cup mouth; a limiting portion is provided radially outwardly at the upper end of the main body, which abuts against the upper end surface of the cup mouth for limiting position; a first clamping groove is also provided at the lower end of the main body for clamping connection with the upper end of the flexible sealing sleeve.

[0012] Preferably, the outer cover is a cylindrical structure with an open lower end, and is provided with an outer cylinder and an inner cylinder from the outside to the inside; the inner cylinder is evenly provided with at least 2 guide grooves in the circumference; a positioning block is correspondingly provided on the inner side wall of the base; the positioning block is restricted from moving up and down and is arranged in the guide groove.

[0013] Preferably, a guide cylinder is provided above the bottom plate of the inner plug; a second clamping groove is provided on the outer wall of the lower end of the guide cylinder for clamping and connecting with the lower end of the flexible sealing sleeve; the guide cylinder moves up and down in the movable hole at the lower end of the base; the outer diameter of the bottom plate is larger than the guide cylinder.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting the exhaust valve and exhaust hole, the driving mechanism first drives the exhaust valve to open the exhaust hole to exhaust and release pressure before opening the lid, so as to avoid the negative pressure in the cup adsorbing the cup lid to the cup mouth and making it unable to be pulled out; 2. The outer cover, the inner plug and the exhaust valve are linked by a driving mechanism, and the outer cover and the inner plug are connected to the base for lifting. The outer cover and the inner plug move in opposite directions, and the sealing and fixing are achieved by setting a deformation of a flexible sealing sleeve between the inner plug and the base; and the locking is maintained by setting a locking mechanism; the cup cover can be closed on the cup mouth by pressing the outer cover downward, the locking mechanism is unlocked, and the outer cover is moved upward to open and remove the cup cover, so that the cup cover can be opened quickly, and the cover opening is simple and fast, which solves the problems existing in the prior art; 3. By setting the driving mechanism as a combination structure of a rack, a gear cam assembly and a connecting rod, the outer cover and the inner plug can be stably linked to move toward or away from each other; 4. By setting the locking mechanism as a matching structure between the button's undercut and the base interface, the structure is simple and can efficiently achieve locking and unlocking. In addition, the buttons on both sides are ergonomically designed, and the cover can be opened with one hand; 5. The flexible sealing sleeve, inner plug and base are all connected by snap-fit, which is convenient for assembly and disassembly; 6. By providing the matching structures of the guide groove and the positioning block on the outer cover and the base respectively, it can be ensured that the outer cover moves up and down in a directional manner and operates stably, and the outer cover will not be separated from the base; 7. By setting the exhaust valve and exhaust hole, the air can be exhausted and the pressure can be released before opening the lid to avoid the negative pressure in the cup sucking the cup lid to the cup mouth and making it unable to be pulled out. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional exploded structure of the cup cover of the present invention.

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the cup cover of the present invention when it is opened.

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the cup cover of the present invention when the cup cover is closed.

[0018] Figure 4 It is a schematic diagram of the cross-sectional three-dimensional structure of the base.

[0019] Figure 5 It is a schematic diagram of the cross-sectional structure of the outer cover.

[0020] Figure 6 It is a schematic diagram of the cross-sectional structure of the inner plug.

[0021] Figure 7 It is a three-dimensional structural diagram of the gear cam assembly.

[0022] Figure 8 It is a schematic diagram of the three-dimensional structure of the connecting rod.

[0023] Fig. 9 It is a schematic diagram of the three-dimensional structure of the exhaust valve.

[0024] Fig.10 It is a schematic diagram of the three-dimensional structure of a button. DETAILED DESCRIPTION

[0025] In order to make the technical solution of the present invention clearer, the following Figures 1 to 10It should be understood that the specific implementation methods described in this specification are only for explaining the present invention, and are not intended to limit the protection scope of the present invention.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0027] The present invention is a threadless quick-open cup lid, comprising a base 1, an outer cover 2 and an inner plug 3, which together form an inner cavity, wherein the outer cover 2 is connected to the top of the base 1 in a liftable manner, and the inner plug 3 is connected to the bottom of the base 1 in a liftable manner; it also comprises a flexible sealing sleeve 4, the upper and lower ends of which are respectively connected to the base 1 and the inner plug 3, and the inner plug 3 rises to squeeze the flexible sealing sleeve 4 to deform, expand and bend outward to form a sealing blocking portion 41, and the sealing blocking portion 41 contacts and seals with the inner wall of the cup body and limits the position; it also comprises a driving mechanism 5 arranged in the inner cavity, the driving mechanism 5 can link the lifting and lowering of the outer cover 2 and the inner plug 3, the outer cover 2 moves downward to link the inner plug 3 to rise, the outer cover 2 moves upward to link the inner plug 3 to move downward, and the inner plug 3 moves downward to link the outer cover 2 to rise; a locking mechanism 6 is also provided on the outer cover 2, which is used for locking and engaging with the base 1 and unlocking and disengaging.

[0028] Specifically, the flexible sealing sleeve 4 is generally made of food-grade silicone material, which is elastic enough to support formation and rebound recovery, and also has sealing and anti-slip properties, and is a relatively ideal material; its upper and lower ends are connecting parts, and the middle is a deformation part, and the deformation part is complexly pressurized to form a sealing barrier part 41.

[0029] Specifically, the base 1 includes a main body 11, which is an annular structure that passes through from top to bottom and can be inserted into the cup mouth; the upper end of the main body 11 is radially extended outward to be provided with a limit portion 12, and the limit portion 12 is abutted against the upper end surface of the cup mouth for limit positioning; the lower end of the main body 11 is also provided with a first clamping groove 13 for clamping and connecting with the upper end of the flexible sealing sleeve 4.

[0030] Specifically, the inner plug 3 includes a bottom plate 31 and a guide cylinder column 32 from bottom to top; a second clamping groove 33 is provided on the outer side wall of the lower end of the guide cylinder column 32 for clamping and connecting with the lower end of the flexible sealing sleeve 4; the guide cylinder column 32 moves up and down in the movable hole 14 at the lower end of the base 1; the bottom plate 31 is placed below the cup mouth; and the outer diameter of the bottom plate 31 is larger than the guide cylinder column 32, so that the bottom plate 31 can squeeze the flexible sealing sleeve 4 to deform, expand and bend outward to form a sealing blocking portion 41, and the outer diameter of the sealing blocking portion 41 is larger than the inner diameter of the cup mouth.

[0031] Specifically, the outer cover 2 is a cylindrical structure with an opening at the lower end, and is provided with an outer cylinder 21 and an inner cylinder 22 from the outside to the inside, with a gap layer 23 between the outer cylinder 21 and the inner cylinder 22; the inner cylinder 22 is evenly provided with at least 2 guide grooves 24 in the circumferential direction, and the present embodiment preferably has 4 guide grooves 24, and a positioning block 15 is correspondingly provided on the inner side wall of the base 1, and the positioning block 15 is restricted from moving up and down and is arranged in the guide groove 24; in this way, the outer cover 2 can be connected to the base 1 with limited activities and will not fall off.

[0032] Specifically, the locking mechanism 6 includes two buttons 61 that are restricted from sliding inward and outward and are arranged in the sliding holes 25 on both sides of the outer cover 2, and also includes a button spring 62 that is arranged between the button 61 and the inner tube 22 of the outer cover 2 to provide elastic restoring force for the button 61; one end of the button 61 is provided with a radially outward buckle 611 that extends into the movable hole 25, and the other end is a pressing portion 612 that is exposed outside the movable hole 25, and a corresponding radially inward buckle 16 is provided on the base 1 to cooperate with the buckle 611 to lock and engage.

[0033] In some embodiments, the buckle 16 is arranged above the limiting portion 12 and placed in the gap layer 23 of the outer cover 2, and the inverted buckle 611 can be radially extended and retracted inward and outward to enter or exit the gap layer 23; by pressing the pressing portion 612 of the button 61, the inverted buckle 611 moves inward to exit the gap layer 23 and can be unlocked and disengaged from the buckle 16; by releasing the button 61, the button 61 can be reset and moved outward under the action of the button spring 62, and the inverted buckle 611 can re-enter the gap layer 23 and lock and engage with the buckle 16.

[0034] In some embodiments, both sides of the pressing portion 612 of the button 61 are further provided with limiting buckles 613 extending into the movable hole 25 and being able to abut against the edge of the movable hole 25 to limit the button 61 from being separated from the movable hole 25 .

[0035] In some embodiments, the button 61 is further provided with a guide groove 614 facing the movable hole 25, and a guide block 26 is correspondingly provided on the outer cover 2. The guide block 26 is movably arranged in the guide groove 614 to limit the movement of the button 61 in the up and down directions. The movable hole 25 limits the movement of the button 61 in the left and right directions, so that the button 61 is restricted to radial inward and outward movement, thereby preventing the button 61 from shaking and ensuring its stable stroke.

[0036] In some embodiments, a fixing column 27 is provided on the outer side wall of the inner cylinder 22 of the outer cover 2 for sleeve-mounting the button spring 62 .

[0037] Specifically, the driving mechanism 5 includes a gear cam assembly 51, a rack 52 and a connecting rod 53; wherein the gear cam assembly 51 is rotatably connected to the base 1, the rack 52 is vertically arranged on the outer cover 2, and the upper and lower ends of the connecting rod 53 are rotatably connected to the gear cam assembly 51 and the inner plug 3 respectively; when the outer cover 2 moves up and down, the gear cam assembly 51 can be driven to rotate by the rack 52, thereby driving the connecting rod 53 to pull the inner plug 3 to move up and down.

[0038] Specifically, the upper end of the gear cam assembly 51 is a gear 511, the lower end is a cam 512, and a rotating shaft 513 is provided on both sides in the middle; the rack 52 is engaged with the gear 511, the upper end of the connecting rod 53 is rotatably connected to the cam 512, and the rotating shaft 513 is rotatably engaged in the reaming hole 17 on the inner wall of the base 1.

[0039] In some embodiments, an exhaust hole 34 is also provided on the bottom plate 31 of the inner plug 3, and the exhaust valve 7 can move up and down to open and close the exhaust hole 34, which includes a valve body 71 and a valve sealing ring 72; the valve sealing ring 72 is sleeved on the valve body 71 to seal the exhaust hole 34; the valve through hole 73 is provided at the upper end of the valve body 71 and is rotatably connected to the lower end of the connecting rod 53, the connecting rod 53 moves upward to drive the valve body 71 to move upward so that the valve sealing ring 72 seals the exhaust hole 34, and the connecting rod 53 moves downward to drive the valve body 71 to move downward so that the sealing ring 72 moves away from the exhaust hole 34 and opens the exhaust hole 34.

[0040] In some embodiments, the valve body 71 includes a valve stem 711 and a valve seat 712 from top to bottom, and the valve sealing ring 72 is sleeved on the valve stem 711 and abuts against the valve seat 712; the valve stem 711 moves up and down in the exhaust hole 34, and there is an exhaust channel between the exhaust hole 34 and the valve stem 711, the outer diameter of the valve seat 712 is larger than the valve stem 71 to facilitate blocking the valve sealing ring 72, and the outer diameter of the valve sealing ring 72 is larger than the exhaust hole 34 to facilitate sealing the exhaust hole 34.

[0041] In some embodiments, the connecting rod 53 includes a first connecting rod 531, a second connecting rod 532 and a latch 533, wherein the upper and lower ends of the first connecting rod 531 are respectively provided with an upper plug rod 5311 and a lower plug rod 5312 facing the second connecting rod 532, and the second connecting rod 532 is correspondingly provided with an upper plug hole 5321 and a lower plug hole 5322; the upper plug rod 5311 and the lower plug rod 5312 are vertically penetrated with connecting holes; the upper plug rod 5311 passes through the cam through hole 5121 and the upper plug hole 5321 on the cam 512 in sequence, and the lower plug rod 5312 passes through the valve through hole 73 and the lower plug hole 5322 on the exhaust valve 7 in sequence, and the two ends of the latch 533 are respectively inserted into the connecting holes of the upper plug rod 5311 and the lower plug rod 5312.

[0042] When in use, the cup cover is placed on the cup mouth, the main body 11 of the base 1 is inserted into the cup mouth and is limited by the upper end surface of the cup mouth through the limiting part 12, the inner plug 3 is placed below the base 1, especially the bottom plate 31 is below the cup mouth, the outer cover 2 is placed above the base 1, and the side wall of the cup mouth and the side wall of the inner plug 3 are inserted into the gap layer 23 of the outer cover 2, at this time, the outer cover 2 moves up to the top, and the inner plug 3 moves down to the bottom; the outer cover 2 is pressed downward, the rack 52 drives the gear cam assembly 51 to rotate, and the exhaust valve 7 is driven by the connecting rod 53 to drive the inner plug 3 to move up, and the bottom plate 31 of the inner plug 3 squeezes the flexible sealing sleeve 4 to form an outward expansion and bending to form a sealing barrier 41 that contacts and seals with the inner wall of the cup body and limits When the lid is opened, the valve sealing ring 72 closes the exhaust hole 34, and the undercut 611 of the button 61 is locked and fastened with the buckle 16 on the base 1, and the cup cover is in a closed and sealed state; when opening the cover, it is only necessary to press the buttons 61 on both sides inward, the undercut 611 is unlocked and disengaged from the buckle 16, lift the outer cover 2 and move it upward, the rack 52 drives the gear cam assembly 51 to rotate and reset, the connecting rod 53 first drives the exhaust valve 7 to move downward, the valve sealing ring 72 opens the exhaust hole 36, and exhaust and pressure are relieved through the exhaust channel; then it drives the inner plug 3 to move downward and reset, and the flexible sealing sleeve 4 is released from deformation and reset; at this time, the cup cover is in an open state, and the cup cover can be removed from the cup mouth to achieve the purpose of exhaust and pressure relief and quick lid opening. Of course, during the process of opening the lid, since the flexible seal 4 is elastic and can rebound and reset from the deformed state by itself, it is only necessary to unlock and disengage the undercut 611 and the connecting buckle 16, and the flexible seal 4 can drive the inner plug 3 to move downward under the action of the elastic restoring force, thereby linking the outer cover 2 and the exhaust valve 7 to reset, and lifting the outer cover 2 can also be used only for exhaust and pressure relief.

Claims

1. An exhaust quick-opening cup cover, comprising a base (1), an outer cover (2) and an inner plug (3), which together form a cavity, characterized in that: A base (1) which is inserted into the cup mouth in a restrained downward position; An outer cover (2) is disposed above the base (1) and is connected to the base (1) in a liftable manner; An inner plug (3) is disposed below the base (1) and is connected to the base (1) in a liftable manner; its bottom plate (31) is also provided with an exhaust hole (34); A flexible sealing sleeve (4), the upper and lower ends of which are respectively connected to the base (1) and the inner plug (3); The exhaust valve (7) is used to open and close the exhaust hole (34); A driving mechanism (5) is disposed in the inner cavity and is capable of linking the lifting and lowering of the outer cover (2), the inner plug (3) and the exhaust valve (7); A locking mechanism (6) movably disposed on the outer cover (2) and used for engaging and locking with the base (1) and disengaging and unlocking; When the lid is closed, the outer lid (2) moves downward, and the exhaust valve (7) is driven by the driving mechanism (5) to seal the exhaust hole (34). At the same time, the exhaust valve (7) pulls the inner plug (3) upward to squeeze the flexible sealing sleeve (4) to deform, expand and bend outward to form a sealing blocking portion (41). The outer diameter of the sealing blocking portion (41) is larger than the inner diameter of the cup mouth, and contacts with the inner wall of the cup body to seal and limit the position. At the same time, the locking mechanism (6) is engaged and locked with the base (1); When the cover is opened, the locking mechanism (6) is disengaged from the base (1) and unlocked, the outer cover (2) rises, the driving mechanism (5) links the exhaust valve (7) to move downward to open the exhaust hole (34), and at the same time drives the inner plug (3) to move downward, and the flexible sealing sleeve (4) releases its deformation and recovers.

2. The exhaust quick-opening cup cover according to claim 1, characterized in that: The driving mechanism (5) comprises a gear-cam assembly (51), a rack (52) and a connecting rod (53); The gear-cam assembly (51) is rotatably connected to the base (1), with the upper end of the gear (511) and the lower end of the gear-cam assembly (512); The rack (52) is vertically arranged on the outer cover (2) and meshes with the gear (511); The upper and lower ends of the connecting rod (53) are rotatably connected to the cam (512) and the exhaust valve (7) respectively.

3. The exhaust quick-opening cup cover according to claim 2, characterized in that: The connecting rod (53) comprises a first connecting rod (531), a second connecting rod (532) and a latch (533); An upper insert rod (5311) and a lower insert rod (5312) are respectively provided at the upper and lower ends of the first connecting rod (531) facing the second connecting rod (532); The second connecting rod (532) is correspondingly provided with an upper plug hole (5321) and a lower plug hole (5322); The upper plug rod (5311) and the lower plug rod (5312) are both vertically penetrated with connection holes; The upper plug rod (5311) sequentially passes through the cam through hole (5121) and the upper plug hole (5321) on the cam (512), the lower plug rod (5312) sequentially passes through the valve through hole (73) and the lower plug hole (5322) on the exhaust valve (7), and the two ends of the latch pin (533) are respectively inserted into the connecting holes of the upper plug rod (5311) and the lower plug rod (5312).

4. The exhaust quick-opening cup cover according to claim 3, characterized in that: The exhaust valve (7) comprises a valve body (71) and a valve sealing ring (72); The valve through hole (73) is provided at the upper end of the valve body (71) and is located above the exhaust hole (34); The valve sealing ring (72) is sleeved on the valve body (71) and is placed below the exhaust hole (34) to seal the exhaust hole (34).

5. The exhaust quick-opening cup cover according to claim 4, characterized in that: The valve body (71) comprises, from top to bottom, a valve stem (711) and a valve seat (712); The valve through hole (73) is provided at the upper end of the valve stem (711); The valve sealing ring (72) is sleeved on the valve stem (711) and abuts against the valve seat (712); The valve stem (711) moves up and down in the exhaust hole (34), and an exhaust passage is provided between the exhaust hole (34) and the valve stem (711); The outer diameter of the valve seat (712) is larger than the valve stem (711); The outer diameter of the valve sealing ring (72) is larger than the exhaust hole (34).

6. The exhaust quick-opening cup cover according to claim 1, characterized in that: The locking mechanism (6) comprises two buttons (61) which are restricted from sliding inward and outward and are arranged in sliding holes (25) on both sides of the outer cover (2); It also includes a button spring (62) disposed between the button (61) and the outer cover (2) to provide an elastic restoring force for the button (61); One end of the button (61) is provided with a radially outward undercut (611) which extends into the movable hole (25), and the other end is a pressing portion (612) which protrudes out of the movable hole (25); The base (1) is provided with a corresponding radially inwardly facing buckle (16) which cooperates with the undercut (611) to engage and lock.

7. The exhaust quick-opening cup cover according to claim 1, characterized in that: The base (1) comprises a main body (11), which is a ring-shaped structure that penetrates from top to bottom and can be inserted into the mouth of a cup; A limiting portion (12) is provided radially outwardly at the upper end of the main body (11), and is abutted against the upper end surface of the cup mouth for limiting position; The lower end of the main body (11) is also provided with a first clamping groove (13) for clamping and connecting with the upper end of the flexible sealing sleeve (4).

8. The exhaust quick-opening cup cover according to claim 7, characterized in that: The outer cover (2) is a cylindrical structure with an open lower end, and is provided with an outer cylinder (21) and an inner cylinder (22) in sequence from the outside to the inside; The inner cylinder (22) is evenly provided with at least two guide grooves (24) in the circumferential direction; A positioning block (15) is correspondingly provided on the inner side wall of the base (1); The positioning block (15) is restricted from moving up and down and is arranged in the guide groove (24).

9. The exhaust quick-opening cup cover according to claim 7, characterized in that: A guide column (32) is also provided above the bottom plate (31) of the inner plug (3); A second clamping groove (33) is provided on the outer side wall of the lower end of the guide cylinder (32) for clamping and connecting with the lower end of the flexible sealing sleeve (4); The guide cylinder (32) moves up and down in a movable hole (14) at the lower end of the base (1); The outer diameter of the bottom plate (31) is larger than that of the guide cylinder (32).

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