CN209939378U

CN209939378U - Leakage-proof bottle cap and liquid bottle

Info

Publication number: CN209939378U
Application number: CN201920040603.2U
Authority: CN
Inventors: 刘尊峰; 张芸婷; 阮志远
Original assignee: Xiaowei (shanghai) Biotechnology Co Ltd
Current assignee: Xiaowei (shanghai) Biotechnology Co Ltd
Priority date: 2019-01-10
Filing date: 2019-01-10
Publication date: 2020-01-14
Anticipated expiration: 2029-01-10

Abstract

The utility model provides a leak protection bottle lid and liquid bottle, the bottle lid includes bottom surface and first side, be equipped with the bleeder vent on the bottom surface, be equipped with the check valve on the bleeder vent, the check valve can control the bleeder vent is one-way to be opened, makes outside air can get into in the liquid bottle via the bleeder vent, the check valve is one of first check valve or second check valve or third check valve, the leak protection bottle lid and liquid bottle have simple structure, spare part is few, the assembly is convenient, be difficult for the weeping, accumulate dust, the card stopper foreign matter and ageing advantage; in addition, the air holes of the leakage-proof bottle cap are quick and sensitive to open and close and are accurate to control.

Description

Leakage-proof bottle cap and liquid bottle

Technical Field

The utility model relates to a bottle lid, in particular to leak protection bottle lid and liquid bottle.

Background

In daily life, people often use a plurality of bottles and cans to contain liquid, such as shampoo, hand sanitizer, shower cream, face lotion, edible oil and the like, cleaning products used in bathrooms or seasonings used in kitchens.

There are two main ways of discharging the liquid from the bottle: firstly, a pressing type liquid outlet device is additionally arranged on a bottle mouth, and a user can extrude liquid out of a bottle body immediately by slightly pressing the device, so that the method is convenient to use, but the pressing type liquid outlet device is expensive and is not beneficial to wide application; the other mode is that an intelligent liquid outlet device is adopted, an intelligent sensing device is connected with a liquid bottle, and liquid in the bottle can be pumped out when sensing. In the second mode, in order to ensure the balance of the air pressure inside and outside the liquid bottle when in use, the inner cover is provided with the air hole, but the air hole is directly connected with the outside, so that the problem of liquid leakage exists when the bottle is inverted.

The chinese patent application No. 200710077215.3 provides a leakproof cap structure for an inverted soft bottle with one-way liquid outlet and one-way air permeability, which mainly comprises a cap body arranged at the outlet of a bottle body in an airtight manner, an opening is formed at the bottom of the cap body, at least one air vent penetrating through the bottom of the cap body is formed on the outer ring of the opening, at least one first one-way valve arranged on the opening of the cap body and at least one second one-way valve arranged inside the cap body, the first one-way valve can control one-way liquid outlet of the bottle body, the second one-way valve can control one-way air inlet of the air vent of the cap body, so that the bottle is in an inverted state when not in use, liquid in the bottle does not leak, and the liquid can be constantly gathered at one end of the bottle mouth, and even if the remaining liquid in the bottle is not much, a user can press out. Although the patent solves the problem of liquid leakage when the air holes are inverted, the patent still has the following problems: firstly, the method comprises the following steps: the sealing performance of the joint of the one-way valve and the bottle cap is poor, and liquid is easy to seep out from the joint of the one-way valve and the bottle cap; secondly, the method comprises the following steps: the bottle cap has a complex structure and numerous parts, and is not beneficial to industrial production and improvement of assembly efficiency; thirdly, the method comprises the following steps: the first one-way valve and the second one-way valve are exposed outside the bottle cap, liquid is easy to seep outwards when the first one-way valve is squeezed by external force in the transportation process, and dust or foreign matters are easy to accumulate or block at the second one-way valve; fourth, adopt the duckbilled valve to control the break-make of bleeder vent, the duckbilled valve bulky, open and shut sensitivity low, be unfavorable for carrying out accurate control to the break-make of bleeder vent, and the duckbilled valve generally adopts rubber preparation, and is ageing easily.

The present application is proposed to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a leak protection bottle lid and liquid bottle to solve present leak protection bottle lid and liquid bottle structure complicacy, the assembly is inconvenient, the junction leakproofness of check valve and bottle lid is poor and the check valve content easily accumulates dust, the jam foreign matter and ageing technical problem.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides a leak protection bottle lid, the bottle lid includes bottom surface and first side, be equipped with the bleeder vent on the bottom surface, be equipped with the check valve on the bleeder vent, the check valve can control the bleeder vent is one-way to be opened for outside air can via in the bleeder vent gets into the liquid bottle, the check valve is one of first check valve or second check valve or third check valve: the first one-way valve is a duckbill valve and comprises a valve nozzle and a first connecting part, the first connecting part is of a cylindrical structure with a hollow inner part, a first convex ring is arranged on the outer side of the first connecting part, and the first convex ring is an annular bulge arranged along the circumferential direction of the first connecting part; the second one-way valve comprises a peripheral frame, a first valve body and a crank arm, wherein the first valve body is of a bowl-shaped structure, the first valve body is provided with a spherical surface protruding to one side far away from the peripheral frame, the peripheral frame is of a circular ring-shaped structure, the crank arm is of a bent strip-shaped structure, and the peripheral frame is connected with the first valve body through the crank arm; the third check valve comprises a second valve body, a second connecting portion and a stopping portion, the second valve body is of a bowl-shaped structure, the second valve body is provided with a spherical surface protruding towards one side of the second connecting portion, the second connecting portion is of a cylindrical structure, the stopping portion is arranged to enable the second connecting portion to be far away from the protrusion of one end of the second valve body, and a notch is formed in the stopping portion.

Furthermore, the first convex ring is located the one end that first connecting portion is close to the valve mouth the one end that first connecting portion kept away from the valve mouth is equipped with the second convex ring, the second convex ring is for following the cyclic annular arch that the circumference of first connecting portion set up.

Furthermore, the air hole is provided with a side wall which is of a circular ring structure, and the first convex ring and the second convex ring are respectively clamped at two ends of the air hole.

Furthermore, on the side where the first side surface is located, the air vent is provided with a circular side wall, a bowl-shaped accommodating cavity is arranged at one end, far away from the bottom surface, of the side wall, and the accommodating cavity is configured to accommodate the second one-way valve or the third one-way valve.

Furthermore, one side of the accommodating cavity, which is far away from the bottom surface, is open, and one side of the accommodating cavity, which is close to the bottom surface, is provided with a bowl-shaped bottom surface.

Furthermore, a lug is arranged at an opening of one side of the accommodating cavity, which is far away from the bottom surface, and the lug is of a convex structure arranged at the opening of the accommodating cavity.

Furthermore, after the second one-way valve and the air holes in the bottle cap are assembled, the second one-way valve is located in the containing cavity, the first valve body is attached to the bowl-shaped bottom surface of the containing cavity, the peripheral frame is located on one side, close to the bottom surface, of the lug, and the peripheral frame is clamped and fixed in the containing cavity through the lug.

Furthermore, after the third one-way valve and the air holes are assembled, the second valve body is located in the accommodating cavity, the second connecting portion penetrates through the air holes, the stopping portion is located on one side, far away from the accommodating cavity, of the air holes, and the outer diameter of the stopping portion is larger than the minimum outer diameter of the air holes.

Further, still be equipped with out the liquid hole on the bottle lid, bleeder vent and play liquid hole are kept away from one side of first side sets up the valve plug, the valve plug includes the bottom plate and sets up stand on the bottom plate, the stand with bleeder vent and play liquid hole correspond the setting, be equipped with on the bottom surface of bottle lid and be used for holding the depressed part of valve plug, the shape of depressed part with the shape of bottom plate corresponds the setting.

A liquid bottle, the liquid bottle has foretell leak protection bottle lid.

Compared with the prior art, the leakage-proof bottle cap has the advantages of simple structure, few parts and convenient assembly, and in addition, through the arrangement of the valve plug, the optimization of the structure of the one-way valve and the optimization of the assembly structure of the one-way valve and the bottle cap, on one hand, the leakage-proof bottle cap is not easy to leak liquid, accumulate dust, block foreign matters and age when in an unused state such as transportation; on the other hand, the air holes of the leakage-proof bottle cap are opened and closed quickly and sensitively and are controlled accurately.

Another object of the present invention is to provide a liquid bottle, which has the same advantages as the above leakage-proof bottle cap with respect to the prior art, and is not repeated herein.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural view of a liquid bottle according to an embodiment of the present invention;

FIG. 2 is another schematic view of the bottle body according to the embodiment of the present invention;

fig. 3 is another schematic structural view of the bottle body according to the embodiment of the present invention;

fig. 4 is a schematic view of a partial structure of a bottle mouth according to an embodiment of the present invention;

fig. 5 is another schematic partial structure diagram of the bottle mouth according to the embodiment of the present invention;

fig. 6 is a schematic view of a first structure of the bottle cap according to the embodiment of the present invention;

fig. 7 is a second structural schematic view of the bottle cap according to the embodiment of the present invention;

fig. 8 is a schematic view of a third structure of the bottle cap according to the embodiment of the present invention;

fig. 9 is a fourth schematic structural view of the bottle cap according to the embodiment of the present invention;

fig. 10 is a fifth structural schematic view of the bottle cap according to the embodiment of the present invention;

FIG. 11 is a schematic view of a valve plug according to an embodiment of the present invention;

FIG. 12 is another schematic illustration of a valve plug according to an embodiment of the present invention;

FIG. 13 is a schematic view of another embodiment of a valve plug according to the present invention;

fig. 14 is a schematic structural view of a first check valve according to an embodiment of the present invention;

fig. 15 is a sixth schematic structural view of the bottle cap according to the embodiment of the present invention;

fig. 16 is a seventh structural schematic view of the bottle cap according to the embodiment of the present invention;

fig. 17 is an eighth schematic structural view of the bottle cap according to the embodiment of the present invention;

fig. 18 is a schematic structural view of a second check valve according to an embodiment of the present invention;

fig. 19 is another schematic structural view of a second check valve according to an embodiment of the present invention;

fig. 20 is a schematic view of a second check valve according to an embodiment of the present invention;

fig. 21 is a ninth structural schematic view of the bottle cap according to the embodiment of the present invention;

FIG. 22 is an enlarged schematic view of a partial structure of the liquid outlet and the air holes according to the embodiment of the present invention;

fig. 23 is a schematic structural view of a third check valve according to an embodiment of the present invention;

fig. 24 is a schematic view of an assembly structure of the first check valve and the bottle cap according to the embodiment of the present invention;

fig. 25 is a schematic view of another assembly structure of the first check valve and the bottle cap according to the embodiment of the present invention;

fig. 26 is a schematic view of an assembly structure of the second check valve and the bottle cap according to the embodiment of the present invention;

fig. 27 is a schematic view of an assembly structure of the third check valve and the bottle cap according to the embodiment of the present invention.

Description of reference numerals:

1-a bottle cap, 11-a bottom surface, 12-a first side surface, 13-a second side surface, 14-a first snap-in part, 15-a second snap-in part, 16-a snap-in groove, 17-a vent hole, 171-a side wall, 172-a snap-in part, 173-a receiving cavity, 174-a lug, 18-a one-way valve, 181-a first one-way valve, 1811-a valve nozzle, 1812-a first connecting part, 1813-a convex ring, 1814-a second convex ring, 182-a second one-way valve, 1821-a first valve body, 1822-a peripheral frame, 1823-a curved arm, 183-a third one-way valve, 1831-a second valve body, 1832-a second connecting part, 1833-a stopping part, 1834-a notch, 19-a liquid outlet, 2-a bottle body, 21-a bottle mouth, 22-a first projection, 23-second protrusion, 24-groove, 3-valve plug, 31-bottom plate, 32-first upright post, 321-first cone, 33-second upright post, 331-second cone and 4-liquid outlet pipe.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example 1

As shown in fig. 1-27, a leakage-proof bottle cap, said bottle cap 1 comprises a bottom surface 11 and a first side surface 12, said first side surface 12 is vertically arranged at one side edge of said bottom surface 11, said first side surface 12 is provided with a second side surface 13 at the inner side, said second side surface 13 is vertically arranged with said bottom surface 11. The first side surface 12 and the second side surface 13 are inner sides on the sides close to the circle center.

Further, the bottom surface 11 is of a circular structure, and the first side surface 12 and the second side surface 13 are of circular ring structures.

Further, the height of the second side surface 13 in the axial direction is lower than the height of the first side surface 12 in the axial direction.

Further, the inboard of first side 12 is equipped with first joint portion 14, first joint portion 14 is for following the inboard circumference of first side 12 extends strip arch.

Preferably, a plurality of the first clamping portions 14 are arranged at intervals inside the first side surface 12.

Further, the inboard of first side 12 still is equipped with second joint portion 15, second joint portion 15 is for following the inboard axial extension's of first side 12 strip is protruding.

Preferably, the second clamping portion 15 is located in a gap between two adjacent first clamping portions 14.

Further, a clamping groove 16 is formed in one side of the first side surface 12, which is far away from the bottom surface 11, and the clamping groove 16 is a notch formed in the first side surface 12.

Furthermore, the bottom surface 11 is provided with air holes 17, and the air holes 17 are through holes penetrating through the bottom surface 11. The air hole 17 is provided with a one-way valve 18, the one-way valve 18 can control the air hole 17 to be opened in one way, so that external air can enter the liquid bottle through the air hole 17, and liquid in the liquid bottle cannot be discharged out of the liquid bottle through the air hole 17.

Further, the check valve 18 is one of a first check valve 181, a second check valve 182, or a third check valve 183.

Further, the first check valve 181 is a duckbill valve, the first check valve 181 includes a valve nozzle 1811 and a first connecting portion 1812, the first connecting portion 1812 is a cylindrical structure with a hollow interior, a first convex ring 1813 is disposed on the outer side of the first connecting portion 1812, and the first convex ring 1813 is an annular protrusion disposed along the circumference of the first connecting portion 1812. The first check valve 181 is clamped and fixed on the air hole 17 through the first convex ring 1813.

Further, the second one-way valve 182 includes an outer peripheral frame 1822, a first valve body 1821, and a curved arm 1823, the first valve body 1821 is a bowl-shaped structure, and the first valve body 1821 has a spherical surface protruding to a side away from the outer peripheral frame 1822. The peripheral frame 1822 has a circular ring-shaped structure. The curved arm 1823 is a strip-shaped structure having a bend, and on one hand, when two ends of the curved arm 1823 are subjected to an external force, the curved arm 1823 can be deformed by the bend. The outer peripheral frame 1822 and the first valve body 1821 are connected by the curved arm 1823, so that the distance between the outer peripheral frame 1822 and the first valve body 1821 can be changed by deformation of the curved arm 1823. On the other hand, by the provision of the curved arm 1823, a hollowed gap is formed between the outer peripheral frame 1822 and the first valve body 1821, so that air can flow through the gap on both sides of the second check valve 182.

Preferably, one end of the curved arm 1823 is connected to the inner side of the outer circumferential frame 1822, and the other end of the curved arm 1823 is connected to the edge of the first valve body 1821.

Further, the third one-way valve 183 includes a second valve body 1831, a second connecting portion 1832 and a stopper 1833, the second valve body 1831 is a bowl-shaped structure, and the second valve body 1831 has a spherical surface protruding to a side close to the second connecting portion 1832. The second connecting portion 1832 is a cylindrical structure, and the stopping portion 1833 is a protrusion disposed at one end of the second connecting portion 1832 away from the second valve body 1831.

Further, the second valve body 1831 and the blocking portion 1833 can be respectively clamped at two ends of the vent hole 17.

Preferably, the stopping portion 1833 is an annular protrusion disposed at an end of the second connecting portion 1832 away from the second valve body 1831, and the stopping portion 1833 is provided with a notch 1834.

Furthermore, a liquid outlet hole 19 is formed in the bottom surface 11 of the bottle cap 1, a liquid outlet pipe 4 is arranged on one side of the liquid outlet hole 19 close to the bottle body 2, the liquid outlet pipe 4 is communicated with the liquid outlet hole 19, and the liquid outlet pipe 4 is configured to output liquid in the bottle body 2 outwards.

Example 2

As shown in fig. 1 to 27, a liquid bottle comprises a bottle cap 1 and a bottle body 2, wherein a bottle opening 21 is arranged on the bottle body 2, and the bottle cap 1 is covered at the bottle opening 21. The bottle cap 1 has the structure described in embodiment 1, and is not described herein again.

Further, the bottle mouth 21 is a circular bottle mouth, a first protrusion 22 is arranged on the outer side of the bottle mouth 21, the first protrusion 22 is an annular protrusion arranged on the periphery of the bottle mouth 21, and the first protrusion 22 is clamped with the first clamping portion 14. Specifically, when the bottle cap 1 is closed to the bottle opening 21, the first clamping portion 14 first contacts with one side of the first protrusion 22 away from the bottom of the bottle body 2, and then under the action of external force, the first clamping portion 14 deforms and slides over the first protrusion 22, so that the bottle cap 1 can continue to move to one side close to the bottom of the bottle body 2 until the first clamping portion 14 moves to one side of the first protrusion 22 close to the bottom of the bottle body 2, and the first protrusion 22 is clamped with the first clamping portion 14.

Further, the outside of bottleneck 21 still is equipped with recess 24, recess 24 is followed the axial setting of bottleneck 21, recess 24 with the relative setting in position of second joint portion 15, recess 24 with the unsmooth joint of second joint portion 15, through recess 24 with the setting of second joint portion 15 is right the combination of bottle lid 1 and bottleneck 21 is led and is spacing, makes bottle lid 1 can be covered more easily, accurately on the bottleneck 21.

Furthermore, a second protrusion 23 is further disposed on the outer side of the bottle mouth 21, and the second protrusion 23 is a block-shaped protrusion disposed on the outer side of the bottle mouth 21. The second protrusion 23 corresponds to the slot 16, and the second protrusion 23 can be in concave-convex clamping connection with the slot 16. In this embodiment, the bottle mouth 21 and the bottle cap 1 are further guided and limited by the second protrusion 23 and the clamping groove 16, so that the bottle cap 1 and the bottle mouth 21 are combined more tightly.

Example 3

In order to further solve the technical problems that the existing leakage-proof bottle cap is complex in structure and inconvenient to assemble, the sealing performance of the joint of the one-way valve and the bottle cap is poor, and dust, blocking foreign matters and aging are easily accumulated in the one-way valve, on the basis of embodiment 1, the structure of the first one-way valve 181 and the assembly structure of the bottle cap 1 in embodiment 1 are further optimized:

specifically, as shown in fig. 14, the first check valve 181 is a duckbill valve, the first check valve 181 includes a valve nozzle 1811 and a first connecting portion 1812, the first connecting portion 1812 is a cylindrical structure with a hollow interior, a first convex ring 1813 is disposed on the outer side of the first connecting portion 1812, the first convex ring 1813 is an annular protrusion disposed along the circumference of the first connecting portion 1812, and the first convex ring 1813 is located at one end of the first connecting portion 1812 close to the valve nozzle 1811. A second convex ring 1814 is disposed at an end of the first connecting portion 1812 far from the valve mouth 1811, and the second convex ring 1814 is an annular protrusion disposed along a circumferential direction of the first connecting portion 1812. The first check valve 181 is clamped on the vent hole 17 through the first convex ring 1813 and the second convex ring 1814.

Further, as shown in fig. 15 and 25, the bottom surface 11 of the bottle cap 1 is provided with air holes 17, the air holes 17 are through holes formed in the bottom surface 11, the air holes 17 are formed in the side where the second side surface 13 is located, and the side wall 171 is in a circular structure.

Preferably, the air hole 17 is a stepped hole, and the cross-sectional area of the end of the air hole 17 close to the first clamping portion 14 is smaller than the cross-sectional area of the end far away from the first clamping portion 14.

Furthermore, the outer diameter of the second convex ring 1814 is equal to the inner diameter of the air hole 17 at the end far away from the first clamping part 14; the outer diameter of the first connecting part 1812 is equal to the inner diameter of the middle part of the breather hole 17; the outer diameter of the first convex ring 1813 is larger than the inner diameter of the air hole 17 near one end of the first clamping portion 14.

After the first one-way valve 181 is assembled and connected with the vent hole 17, the second convex ring 1814 is clamped in one end of the vent hole 17 far away from the first clamping portion 14, the first connecting portion 1812 is located in the middle of the vent hole 17, and the first convex ring 1813 is located on one side of the vent hole 17 close to the first clamping portion 14, that is, the first convex ring 1813 is located outside the vent hole 17. The first check valve 181 is clamped at both ends of the vent hole 17 by the first convex ring 1813 and the second convex ring 1814. Through the change of the radius of each part of the first connecting part 1812 and the air hole 17, the concave-convex clamping connection of the first one-way valve 181 and the air hole 17 is realized, and the first one-way valve 181 is tightly connected with the air hole 17, so that liquid leakage is not easy to occur. And the external air can balance and adjust the air pressure in the liquid bottle through the first one-way valve 181, thereby ensuring smooth liquid discharge.

Further, bleeder vent 17 and play liquid hole 19 are kept away from one side of first joint portion 14 sets up valve plug 3, valve plug 3 includes bottom plate 31 and sets up stand on the bottom plate 31, the stand with bleeder vent 17 corresponds the setting with play liquid hole 19, the stand is configured to be right in the transportation, or other long-term when not suitable bleeder vent 17 seals with play liquid hole 19 to avoid entering such as dust or foreign matter bleeder vent 17 and play liquid hole 19.

Furthermore, the upright posts comprise a first upright post 32 and a second upright post 33, the first upright post 32 is a protrusion with the shape consistent with that of the liquid outlet 19, and the second upright post 33 is a protrusion with the shape consistent with that of the air hole 17.

Further, a first taper 321 is arranged at an end of the first upright post 32 far away from the bottom plate 31, and a cross-sectional area of the first taper 321 gradually decreases from the end close to the first upright post 32 to the end far away from the first upright post 32; the end of the second upright column 33 far away from the bottom plate 31 is provided with a second cone 331, and the cross-sectional area of the second cone 331 gradually decreases from the end near the second upright column 33 to the end far away from the second upright column 33. When the valve plug 3 is installed on the liquid outlet hole 19 and the air vent 17, the first cone 321 and the second cone 331 are respectively located in the liquid outlet hole 19 and the air vent 17, and then the liquid outlet hole 19 and the air vent 17 are sealed.

Preferably, be equipped with on the bottom surface 11 of bottle lid 1 and be used for holding the depressed part of valve plug 3, the depressed part is located bottom surface 11 is kept away from one side of first joint portion 14, the shape of depressed part with the shape of the bottom plate 31 of valve plug 3 corresponds the setting, works as valve plug 3 installs when in the depressed part, bottom plate 31 is located completely in the depressed part, in order to avoid valve plug 3 drops in the transportation.

More preferably, the bottom plate 31 may be made of a soft material so that the user can easily pull out the valve plug 3 before use.

Further, the valve plug 3 is detachably connected with the bottle cap 1, so that a user can repeatedly use the valve plug 3.

Furthermore, the bottom plate 31 is provided with sticky material on the side contacting with the bottom surface 11, and the bottom plate 31 is pasted on the bottom surface 11 through the sticky material, so as to further prevent the valve plug 3 from falling off in the using process.

Example 4

In order to further solve the technical problems that the existing leakage-proof bottle cap is complex in structure and inconvenient to assemble, the sealing performance of the joint of the one-way valve and the bottle cap is poor, and dust, blocking foreign matters and aging are easily accumulated in the one-way valve, on the basis of embodiment 1, the structure of the first one-way valve 181 of embodiment 1 and another assembly structure of the bottle cap 1 are further optimized:

Further, as shown in fig. 16, 17 and 24, an air hole 17 is formed in the bottom surface 11 of the bottle cap 1, the air hole 17 is a through hole formed in the bottom surface 11, the air hole 17 has a side wall 171 on the side where the second side surface 13 is located, and the side wall 171 is a circular ring-shaped structure. A clamping portion 172 is disposed at one end of the side wall 171 close to the first clamping portion 14, and the clamping portion 172 is a plate-shaped structure perpendicular to the side wall 171.

Preferably, two clamping portions 172 are oppositely arranged at one end of the air hole 17 close to the first clamping portion 14, and the clamping portions 172 are in a semicircular structure vertically arranged with the side wall 171, so that the clamping portions 172 have arc-shaped edges and straight edges, the arc-shaped edges of the clamping portions 172 are connected with the edges of the air hole 17, the straight edges of the two clamping portions 172 are oppositely arranged in parallel, and a gap for the first check valve 181 to pass through is formed between the straight edges of the two clamping portions 172.

Further, the air hole 17 is a stepped hole, and the cross-sectional area of the end of the air hole 17 close to the first clamping portion 14 is smaller than the cross-sectional area of the end far away from the first clamping portion 14.

Furthermore, the outer diameter of the second convex ring 1814 is equal to the inner diameter of the air hole 17 at the end far away from the first clamping part 14; the outer diameter of the first convex ring 1813 is equal to the inner diameter of the air hole 17 near one end of the first clamping portion 14, and the outer diameter of the first convex ring 1813 is greater than the distance between the straight edges of the two clamping portions 172.

When the first check valve 181 is assembled and connected with the vent hole 17, the second convex ring 1814 is clamped in one end of the vent hole 17 far away from the first clamping portion 14, the first connecting portion 1812 is located in the middle of the vent hole 17, the first convex ring 1813 is located on one side of the clamping portion 172 far away from the first clamping portion 14, the first convex ring 1813 is fixed in the vent hole 17 through the clamping portion 172, and meanwhile, the clamping portion 172 can seal the connection between the first convex ring 1813 and the vent hole 17. The first check valve 181 is clamped on the vent hole 17 through the first convex ring 1813 and the second convex ring 1814.

Furthermore, the air holes 17 have three different inner diameters, the inner diameter of one end of the air hole 17 far away from the first clamping part 14 is denoted as R1, the inner diameter of one end of the air hole 17 close to the first clamping part 14 is denoted as R3, and the inner diameter of the middle area of the air hole 17 is denoted as R2, so that R1 is greater than R3 is greater than R2; correspondingly, when the outer diameter of the middle region of the first connecting portion 1812 is denoted as R2, the outer diameter of the second convex ring 1814 is denoted as R1, and the outer diameter of the first convex ring 1813 is denoted as R3, there are R1 > R3 > R2, R1 ═ R1, R2 ═ R2, and R3 ═ R3. When first check valve 181 with during bleeder vent 17 assembled connection, the part that first check valve 181 radius is R1 with bleeder vent 17 radius is the regional cooperation connection of R1, the part that first check valve 181 radius is R2 with bleeder vent 17 radius is the regional cooperation connection of R2, the part that first check valve 181 radius is R3 with bleeder vent 17 radius is the regional cooperation connection of R3. The relative sizes of the radii of the vent hole 17 and each part of the first check valve 181 are adjusted, so that the first convex ring 1813 and the second convex ring 181 of the first check valve 181 are clamped and fixed at two ends of the vent hole 17, and the vent hole 17 and the first check valve 181 are tightly combined and are not easy to fall off, leak gas and leak liquid.

Example 5

In order to further solve the technical problems that the existing leakage-proof bottle cap is complex in structure and inconvenient to assemble, the sealing performance of the joint of the one-way valve and the bottle cap is poor, and dust, blocking foreign matters and aging are easily accumulated in the one-way valve, on the basis of embodiment 1, the structure of the second one-way valve 182 and the assembly structure of the second one-way valve and the bottle cap 1 in embodiment 1 are further optimized:

specifically, as shown in fig. 18 to 22 and 26, the second check valve 182 includes an outer peripheral frame 1822, a first valve body 1821, and a curved arm 1823, the first valve body 1821 is a bowl-shaped structure, and the first valve body 1821 has a spherical surface protruding to a side away from the outer peripheral frame 1822. The peripheral frame 1822 has a circular ring-shaped structure. The curved arm 1823 is a strip-shaped structure having a bend, and when the two ends of the curved arm 1823 are subjected to an external force, the curved arm 1823 can be deformed by the bend. The outer peripheral frame 1822 and the first valve body 1821 are connected by the curved arm 1823, so that the distance between the outer peripheral frame 1822 and the first valve body 1821 can be changed by deformation of the curved arm 1823.

Further, the air hole 17 is a through hole formed in the bottom surface 11, the air hole 17 has a circular side wall 171 on the side where the first side surface 12 is located, a bowl-shaped accommodating cavity 173 is formed in the side of the side wall 171 far away from the bottom surface 11, and the accommodating cavity 173 is configured to accommodate the second one-way valve 182. The accommodating cavity 173 is close to one side of the first clamping portion 14 and is open, and one side of the accommodating cavity 173, which is far away from the first clamping portion 14, is provided with a bowl-shaped bottom surface.

Furthermore, a lug 174 is disposed at an opening of the accommodating cavity 173 near the first clamping portion 14, and the lug 174 is a convex structure disposed at the opening of the accommodating cavity 173.

Preferably, the lug 174 is circumferentially disposed at the opening of the receiving cavity 173.

More preferably, 2 to 8 lugs 174 are uniformly spaced at the opening of the accommodating cavity 173. Furthermore, the lugs 174 are provided in an equal number and one-to-one correspondence with the curved arms 1823.

After the second one-way valve 182 is assembled with the vent 17 on the bottle cap 1, the second one-way valve 182 is located in the accommodating cavity 173, the first valve body 1821 is attached to the bowl-shaped bottom surface of the accommodating cavity 173, the outer frame 1822 is located on one side of the lug 174 away from the first clamping portion 14, and the outer frame 1822 is clamped in the accommodating cavity 173 through the lug 174, so that the second one-way valve 182 is clamped in the accommodating cavity 173.

When the pressure in the liquid bottle is lower than the external pressure, the first valve body 1821 moves to one side far away from the air hole 17 under the action of the external pressure, and the air hole 17 is opened; when the pressure in the liquid bottle is equal to the external pressure, the first valve body 1821 moves to one side close to the vent hole 17 under the restoring force of the curved arm 1823, and the vent hole 17 is closed.

Example 6

In order to further solve the technical problems that the existing leakage-proof bottle cap is complex in structure and inconvenient to assemble, the sealing performance of the joint of the one-way valve and the bottle cap is poor, and dust, blocking foreign matters and aging are easily accumulated in the one-way valve, on the basis of embodiment 1, the structure of the third one-way valve 183 and the assembly structure of the bottle cap 1 in embodiment 1 are further optimized:

specifically, as shown in fig. 23 and 27, the third one-way valve 183 includes a second valve body 1831, a second connecting portion 1832, and a stopper 1833, the second valve body 1831 is a bowl-shaped structure, and the second valve body 1831 has a spherical surface protruding toward a side close to the second connecting portion 1832. The second connecting portion 1832 is a bar structure, and the stopping portion 1833 is a protrusion disposed at an end of the second connecting portion 1832 away from the second valve body 1831.

Preferably, the stopping portion 1833 is an annular protrusion disposed at one end of the second connecting portion 1832 away from the second valve body 1831. The stopping portion 1833 is provided with a notch 1834.

Further, the air hole 17 is a through hole formed in the bottom surface 11, the air hole 17 has a circular side wall 171 on the side where the second side surface 13 is located, a bowl-shaped accommodating cavity 173 is formed in the side wall 171 close to the first clamping portion 14, and the accommodating cavity 173 is configured to accommodate the third one-way valve 183. The accommodating cavity 173 is close to one side of the first clamping portion 14 and is open, and one side of the accommodating cavity 173, which is far away from the first clamping portion 14, is provided with a bowl-shaped bottom surface.

After the third one-way valve 183 is assembled with the air hole 17, the second valve body 1831 is located in the accommodating cavity 173, the second connecting portion 1832 passes through the air hole 17, the stopping portion 1833 is located on one side of the air hole 17 far away from the first clamping portion 14, and the outer diameter of the stopping portion 1833 is greater than the minimum outer diameter of the air hole 17, so that the third one-way valve 183 can be clamped and fixed on the air hole 17 through the stopping portion 1833.

When the liquid bottle is inverted and the liquid is discharged outwards, namely the bottle body 2 is positioned above the bottle cap 1, the third one-way valve 183 moves towards one side far away from the first clamping part 14 under the action of gravity until the second valve 1831 is in contact with the accommodating cavity 173, so that the air holes 17 are completely blocked, and the liquid is prevented from flowing out through the air holes 17; when the liquid bottle is placed in the forward direction, that is, when the bottle body 2 is located below the bottle cap 1, the third one-way valve 183 moves towards one side close to the first clamping portion 14 under the action of gravity, the air vent 17 is opened, so that external air can enter the bottle body 2 through the air vent 17, and after the third one-way valve 183 moves towards one side close to the first clamping portion 14 to be in contact with the lug 174, the movement is stopped under the clamping action of the lug 174, and the air vent 17 is kept in an open state.

Further, go out liquid hole 19 and keep away from one side of first joint portion 14 sets up valve plug 3, valve plug 3 includes bottom plate 31 and sets up stand on the bottom plate 31, the stand with go out liquid hole 19 and correspond the setting, the stand is configured to be in the transportation, or other long-term when not suitable right it seals to go out liquid hole 19 to avoid entering such as dust or foreign matter go out liquid hole 19.

Furthermore, the upright column comprises a first upright column 32, and the first upright column 32 is a protrusion with a shape consistent with the liquid outlet hole 19.

Furthermore, a first taper 321 is disposed at an end of the first upright column 32 away from the bottom plate 31, and a cross-sectional area of the first taper 321 gradually decreases from the end close to the first upright column 32 to the end away from the first upright column 32. When the valve plug 3 is installed on the liquid outlet hole 19, the first taper 321 is located in the liquid outlet hole 19 to seal the liquid outlet hole 19.

In summary, the leakage-proof bottle cap and the liquid bottle have the advantages of simple structure, few parts and convenient assembly, in addition, the check valve 18 can be made of various materials through the arrangement of the valve plug 3, the optimization of the structure of the check valve 18 and the optimization of the assembly structure of the check valve 18 and the bottle cap 1, and on one hand, the leakage-proof bottle cap is not easy to leak liquid, accumulate dust, block foreign matters and age when in transportation and other unused states; on the other hand, the air holes 17 of the leakage-proof bottle cap are opened and closed quickly and sensitively and are controlled accurately.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a leak protection bottle lid, its characterized in that, the bottle lid includes bottom surface (11) and first side (12), be equipped with bleeder vent (17) on bottom surface (11), be equipped with check valve (18) on bleeder vent (17), check valve (18) can be controlled bleeder vent (17) are one-way to be opened for outside air can via in bleeder vent (17) the entering liquid bottle, check valve (18) are one in first check valve (181) or second check valve (182) or third check valve (183):

the first one-way valve (181) is a duckbill valve, the first one-way valve (181) comprises a valve nozzle (1811) and a first connecting part (1812), the first connecting part (1812) is of a cylindrical structure with a hollow interior, a first convex ring (1813) is arranged on the outer side of the first connecting part (1812), and the first convex ring (1813) is an annular bulge arranged along the circumferential direction of the first connecting part (1812);

the second one-way valve (182) comprises a peripheral frame (1822), a first valve body (1821) and a curved arm (1823), the first valve body (1821) is of a bowl-shaped structure, the first valve body (1821) is provided with a spherical surface protruding to one side far away from the peripheral frame (1822), the peripheral frame (1822) is of a circular ring-shaped structure, the curved arm (1823) is of a bent strip-shaped structure, and the peripheral frame (1822) and the first valve body (1821) are connected through the curved arm (1823);

third check valve (183) includes second valve body (1831), second connecting portion (1832) and backstop portion (1833), second valve body (1831) is bowl-shaped structure, second valve body (1831) have to being close to the bellied sphere in second connecting portion (1832) one side, second connecting portion (1832) are column structure, backstop portion (1833) are for setting up second connecting portion (1832) are kept away from the arch of second valve body (1831) one end, be equipped with breach (1834) on backstop portion (1833).

2. The leak-proof bottle cap according to claim 1, wherein the first convex ring (1813) is located at an end of the first connecting portion (1812) close to the valve mouth (1811), a second convex ring (1814) is provided at an end of the first connecting portion (1812) far from the valve mouth (1811), and the second convex ring (1814) is an annular protrusion provided along a circumferential direction of the first connecting portion (1812).

3. The leakage-proof bottle cap as claimed in claim 2, wherein the vent hole (17) has a side wall (171), the side wall (171) is a circular ring structure, and the first and second collars (1813, 1814) are respectively fastened to both ends of the vent hole (17).

4. Leak-proof bottle cap according to claim 1, characterized in that the venting hole (17) has a circular side wall (171) on the side of the first side surface (12), the end of the side wall (171) remote from the bottom surface (11) being provided with a bowl-shaped receiving cavity (173), the receiving cavity (173) being configured to receive the second one-way valve (182) or the third one-way valve (183).

5. Leak-proof bottle cap according to claim 4, characterized in that the side of the receiving cavity (173) remote from the bottom surface (11) is open, and the side of the receiving cavity (173) close to the bottom surface (11) has a bowl-shaped bottom surface.

6. The leak-proof bottle cap as claimed in claim 5, wherein the receiving cavity (173) is provided with a lug (174) at an opening on a side thereof away from the bottom surface (11), and the lug (174) is a convex structure provided at the opening of the receiving cavity (173).

7. The leak-proof bottle cap as claimed in claim 6, wherein the second one-way valve (182) is located in the receiving cavity (173) after the second one-way valve (182) is assembled with the vent hole (17) of the bottle cap (1), the first valve body (1821) is attached to the bowl-shaped bottom surface of the receiving cavity (173), the outer frame (1822) is located on the side of the lug (174) close to the bottom surface (11), and the outer frame (1822) is clamped in the receiving cavity (173) through the lug (174).

8. The leakage-proof bottle cap according to claim 4, wherein after the third one-way valve (183) is assembled with the vent hole (17), the second valve body (1831) is located in the accommodating cavity (173), the second connecting portion (1832) passes through the vent hole (17), the stopper portion (1833) is located at a side of the vent hole (17) away from the accommodating cavity (173), and an outer diameter of the stopper portion (1833) is larger than a minimum outer diameter of the vent hole (17).

9. The leak-proof bottle cap according to claim 1, wherein a liquid outlet hole (19) is further formed in the bottle cap (1), a valve plug (3) is arranged on one side, away from the first side face (12), of the liquid outlet hole (19) and the air hole (17), the valve plug (3) comprises a bottom plate (31) and a stand column arranged on the bottom plate (31), the stand column corresponds to the liquid outlet hole (19) and the air hole (17), a recessed portion used for accommodating the valve plug (3) is formed in the bottom face (11) of the bottle cap (1), and the shape of the recessed portion corresponds to the shape of the bottom plate (31).

10. A liquid bottle comprising the leak-proof cap according to any one of claims 1 to 9.