Leakage-proof breathable pump head and packaging bottle
By sticking a waterproof and breathable film on the outside of the vent hole and combining the design of the piston assembly and the one-way valve assembly, the problem of liquid leakage when the pump head is held upside down, placed on its side or tilted is solved, achieving a balance between air permeability and leak-proofness, ensuring normal liquid discharge and rebound of the packaging bottle.
Patent Information
- Application Number
- CN202422834367.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-20
AI Technical Summary
When the conventional press pump head is held upside down, placed sideways, or tilted beyond a certain angle and pressed for use, the liquid in the packaging bottle is likely to flow into the pump core through the vent hole, resulting in poor rebound and leakage.
A leak-proof and breathable pump head is designed. By sticking a waterproof and breathable membrane on the outside of the air hole, combined with a piston assembly and a one-way valve assembly, air permeability is ensured while blocking the inflow of liquid. It includes a pressure head, a liquid storage cylinder, a piston assembly and a one-way valve assembly. The air hole is located no lower than the highest point of the piston assembly, and a waterproof and breathable membrane is connected to the outer wall of the liquid storage cylinder.
It prevents the liquid from flowing back into the pump head or leaking while maintaining air permeability, ensuring that the packaging bottle can absorb air and rebound normally after being squeezed without affecting the liquid discharge effect.
Smart Images
Figure CN223396673U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of daily necessities packaging, in particular to a leak-proof and breathable pump head and a packaging bottle. Background Art
[0002] In people's daily washing and care process, many cosmetics and toiletries are used. Among these cosmetics and toiletries, some of them are taken out by pressing the pump head on the packaging bottle to discharge the liquid.
[0003] To prevent the bottle from shrinking and failing to rebound after squeezing the liquid out of the bottle, the common pump heads for cosmetics and toiletries on the market usually have an air vent that allows air to flow from inside and outside the bottle. However, when these pump heads are held upside down, placed on their sides, or tilted beyond a certain angle, the liquid in the bottle can easily flow through the vent into the pump core of the pump head, leading to poor rebound and leakage. Utility Model Content
[0004] In view of this, the utility model provides a leak-proof and breathable pump head and packaging bottle, which are used to solve the problem in the prior art that when the pressing pump head of the packaging bottle is held upside down, placed on its side or tilted beyond a certain angle for use, the liquid in the packaging bottle easily flows into the pump core of the pressing pump head through the air vent.
[0005] To achieve one, part, or all of the above purposes or other purposes, the present invention provides: a leak-proof and breathable pump head, comprising: a pressure head, a liquid storage cylinder, a piston assembly, and a one-way valve assembly, wherein the pressure head is connected to the piston assembly, the one-way valve assembly is connected to the piston assembly, and the piston assembly is movably disposed in the liquid storage cylinder along the axial direction of the liquid storage cylinder;
[0006] A vent hole is provided on the side wall of the liquid storage cylinder, and the position of the vent hole is not lower than the highest point where the piston assembly is connected to the inner side wall of the liquid storage cylinder;
[0007] A waterproof and breathable membrane is connected to the outer side wall of the liquid storage cylinder, and the waterproof and breathable membrane is adhered and covered on the outer end of the breathable hole.
[0008] Preferably, the piston assembly includes a hollow piston column, a piston head and a spring, the upper end of the piston column is connected to the bottom of the pressure head, the piston head is connected to the circumferential side wall of the piston column, the spring is sleeved in the piston column, the upper end of the spring can abut against the upper end of the piston column, the lower end of the spring can abut against the lower end of the liquid storage cylinder, and the piston head slides against the inner side wall of the liquid storage cylinder.
[0009] Preferably, the one-way valve assembly includes an upper column valve and a lower ball valve, the upper column valve is sleeved in the piston column and sleeved with the spring, the lower ball valve is movably arranged at the lower end of the liquid storage cylinder, the lower end of the spring abuts against the lower ball valve, the upper column valve is used to control the opening and closing of the upper end of the liquid storage cylinder, and the lower ball valve is used to control the opening and closing of the lower end of the liquid storage cylinder.
[0010] Preferably, the piston head includes an air pump plug head and a liquid pump plug head respectively arranged at both ends of the piston column, and the liquid storage cylinder includes a gas tank and a liquid tank connected up and down, the air pump plug head slides and abuts against the inner side wall of the gas tank, and the liquid pump plug head slides and abuts against the inner side wall of the liquid tank.
[0011] Preferably, the top of the gas bin is respectively provided with an air inlet and an air outlet, the lower end of the air inlet is provided with an air inlet valve flap, and the upper end of the air outlet is provided with an air outlet valve flap. When air is taken in, the air inlet valve flap opens and the air outlet valve flap closes; when air is discharged, the air outlet valve flap opens and the air inlet valve flap closes.
[0012] Preferably, the pressure head is provided with a liquid outlet and an infusion channel, one end of the infusion channel is communicated with the liquid outlet, and the other end is communicated with the upper end of the piston column.
[0013] Preferably, the air outlet is communicated with the lower end of the infusion channel.
[0014] Preferably, the upper end of the liquid storage cylinder is connected to a bottle mouth cover, the lower end of the liquid storage cylinder is connected to a straw, and the bottle mouth cover is used to be connected to the bottle mouth of the packaging bottle.
[0015] Preferably, a protective cover is connected to the upper end of the bottle cap, and the protective cover is used to cover the pressure head.
[0016] The utility model further proposes: a packaging bottle, comprising a bottle body and any one of the above-mentioned leak-proof and breathable pump heads, wherein the leak-proof and breathable pump head is connected to the bottle body.
[0017] The implementation of the present invention will have the following beneficial effects:
[0018] After adopting the above-mentioned leak-proof and breathable pump head, the air holes are sealed by pasting a waterproof and breathable film on the outside of the air holes, so that the air holes can block the liquid while maintaining air permeability. This does not affect the air intake and rebound of the packaging bottle after being squeezed, and can prevent the liquid in the packaging bottle from flowing into the pump head or leaking through the air holes. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0020] in:
[0021] Figure 1 This is a schematic cross-sectional view of the leak-proof and breathable pump head proposed in the present invention;
[0022] Figure 2 for Figure 1 A schematic diagram of the structure of the middle part A;
[0023] Figure 3 This is a schematic diagram of the cross-sectional structure of the packaging bottle proposed in the present utility model.
[0024] Figure numerals: 10, pressure head; 11, liquid outlet; 12, infusion channel; 20, liquid storage cylinder; 201, gas tank; 202, liquid tank; 21, air vent; 22, waterproof breathable membrane; 23, air inlet; 24, air outlet; 25, air inlet valve flap; 26, air outlet valve flap; 27, bottle cap; 28, straw; 29, protective cover; 30, piston assembly; 31, piston column; 32, piston head; 321, air pump plug; 322, liquid pump plug; 33, spring; 40, one-way valve assembly; 41, upper column valve; 42, lower ball valve. DETAILED DESCRIPTION
[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this invention pertains; the terms used in the specification of the application are for the purpose of describing specific embodiments only and are not intended to limit this invention; the terms "including" and "having" and any variations thereof in the specification and claims of this invention and the accompanying drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" and the like in the specification and claims of this invention and the accompanying drawings are used to distinguish different objects, not to describe a specific order.
[0026] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0027] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
[0028] like Figure 1-3 The following are examples provided by the present invention.
[0029] An embodiment of the present utility model provides a leak-proof and breathable pump head, comprising: a pressure head 10, a liquid storage cylinder 20, a piston assembly 30 and a one-way valve assembly 40. The pressure head 10 is connected to the piston assembly 30, and the one-way valve assembly 40 is connected to the piston assembly 30. The piston assembly 30 is movably arranged in the liquid storage cylinder 20 along the axial direction of the liquid storage cylinder 20. Pressing the pressure head 10 can drive the piston assembly 30 to move back and forth up and down in the liquid storage cylinder 20, and enable the one-way valve assembly 40 to realize opening and closing conversion. It can be understood that the working principle of the leak-proof and breathable pump head provided in this embodiment is the same as that of a conventional press pump head, which utilizes air pressure changes to pump out the liquid in the packaging bottle. Common examples include hand soap press pump heads, shampoo, and shower gel press pump heads. A vent hole 21 is provided on the side wall of the liquid storage cylinder 20. The function of the vent hole 21 is to keep the air pressure in the packaging bottle the same as the external air pressure, so as to prevent the air pressure in the packaging bottle from becoming low and causing the bottle body to shrink after the liquid in the packaging bottle is pumped out by the pump head. The position of the vent hole 21 is not lower than the highest point where the piston assembly 30 is connected to the inner wall of the liquid storage cylinder 20, so that the liquid pumped into the liquid storage cylinder 20 The liquid in the liquid storage cylinder 20 will not be higher than the position of the air hole 21, which will affect the liquid discharge effect. A waterproof breathable membrane 22 is connected to the outer wall of the liquid storage cylinder 20. The waterproof breathable membrane 22 is pasted and covered on the outer end of the air hole 21. The waterproof breathable membrane 22 is a polymer waterproof material membrane, which can also be called breathing paper. It has the effect of waterproof and breathable. The air hole 21 is sealed with the waterproof breathable membrane 22, so that the air hole 21 can block the liquid while maintaining air permeability, which does not affect the bottle's rebound after being squeezed, and can prevent the liquid in the bottle from flowing back into the pump head through the air hole 21 or leaking out of the bottle.
[0030] Furthermore, the piston assembly 30 includes a hollow piston column 31, a piston head 32 and a spring 33. The upper end of the piston column 31 is connected to the bottom of the pressure head 10. Pressing the pressure head 10 can drive the piston column 31 to move. The piston head 32 is connected to the circumferential side wall of the piston column 31. The spring 33 is sleeved in the piston column 31. The upper end of the spring 33 can abut against the upper end of the piston column 31, and the lower end of the spring 33 can abut against the lower end of the liquid storage cylinder 20. The piston head 32 slides against the inner side wall of the liquid storage cylinder 20, and the movable The plug head 32 is usually a rubber plug made of flexible material, which can tightly abut against the inner wall of the liquid storage cylinder 20. When the piston head 32 moves to the uppermost position, the position of the air vent 21 is flush with the middle of the piston head 32, and the lower end of the piston head 32 is lower than the position of the air vent 21, so that during the downward pressure of the piston column 31, the liquid storage cylinder 20 located below the piston head 32 can always remain in a sealed state. In addition, one of the functions of the spring 33 is to reset the piston column 31 and reset the pressure head 10 synchronously.
[0031] Furthermore, the one-way valve assembly 40 includes an upper column valve 41 and a lower ball valve 42. The upper column valve 41 is sleeved in the piston column 31 and sleeved with the spring 33. The lower ball valve 42 is movably arranged at the lower end of the liquid reservoir 20. The lower end of the spring 33 abuts against the lower ball valve 42. The upper column valve 41 is used to control the opening and closing of the upper end of the liquid reservoir 20, and the lower ball valve 42 is used to control the opening and closing of the lower end of the liquid reservoir 20. When the pressure head 10 is pressed downward, the upper column valve 41 moves upward relatively, so that the upper end of the liquid reservoir 20 is unblocked. At the same time, the lower ball valve 42 tightly blocks the lower end of the liquid storage cylinder 20 under the action of its own gravity and air pressure. The air in the liquid storage cylinder 20 is discharged and negative pressure is formed. When the pressure head 10 is reset upward, the upper column valve 41 moves downward to block the upper end of the liquid storage cylinder 20. Under the action of the negative pressure in the liquid storage cylinder 20, the lower ball valve 42 is separated from the lower end of the liquid storage cylinder 20, and the liquid in the packaging bottle is sucked into the liquid storage cylinder 20. By pressing the pressure head 10 back and forth continuously, the liquid in the packaging bottle can be continuously pumped out.
[0032] Specifically, the piston head 32 includes an air pump plug head 321 and a liquid pump plug head 322 respectively arranged at both ends of the piston column 31, and the liquid storage cylinder 20 includes a gas tank 201 and a liquid tank 202 connected up and down, the air pump plug head 321 slides and abuts against the inner wall of the gas tank 201, and the liquid pump plug head 322 slides and abuts against the inner wall of the liquid tank 202, wherein the inner diameter and volume of the gas tank 201 are larger than those of the liquid tank 202, so as to increase the air pressure difference in the gas tank 201 during operation to generate a stronger pump suction force, and the liquid pump plug head 322 is a hollow tube, which is connected to the liquid tank 202 to form a sleeve, so that when the liquid is sucked into the liquid storage cylinder 20, it will be pumped out upward along the liquid tank 202 and the liquid pump plug head 322, and will not enter the gas tank 201.
[0033] Furthermore, an air inlet 23 and an air outlet 24 are respectively provided at the top of the gas chamber 201. An air inlet valve flap 25 is provided at the lower end of the air inlet 23, and an air outlet valve flap 26 is provided at the upper end of the air outlet 24. When air is taken in, the air inlet valve flap 25 is opened and the air outlet valve flap 26 is closed. When air is discharged, the air outlet valve flap 26 is opened and the air inlet valve flap 25 is closed.
[0034] Specifically, the pressure head 10 is provided with a liquid outlet 11 and an infusion channel 12. One end of the infusion channel 12 is connected to the liquid outlet 11, and the other end is connected to the upper end of the piston column 31. The air outlet 24 is connected to the lower end of the infusion channel 12, so that when the liquid is discharged, the liquid can be mixed with the air. A foaming net is then provided in the infusion channel 12 and the liquid outlet 11, so that the pumped liquid can become foamy.
[0035] Specifically, the upper end of the liquid storage cylinder 20 is connected to the bottle mouth cover 27, and the lower end of the liquid storage cylinder 20 is connected to the straw 28. The bottle mouth cover 27 is used to connect to the bottle mouth of the packaging bottle. The lower end of the straw 28 extends to the bottom of the packaging bottle for drawing liquid from the packaging bottle.
[0036] Furthermore, a protective cover 29 is connected to the upper end of the bottle cap 27 , and the protective cover 29 is used to cover the pressure head 10 to prevent the pressure head 10 from being accidentally pressed, and also to reduce dust contamination at the liquid outlet 11 .
[0037] The utility model further proposes: a packaging bottle, comprising a bottle body and the leak-proof and breathable pump head, wherein the leak-proof and breathable pump head is connected to the bottle body.
[0038] Obviously, the embodiments described above are only some of the embodiments of the present invention, rather than all of the embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned specific embodiments, or to make equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the present invention specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of protection of the present invention patent.
Claims
1. A leak-proof and breathable pump head, characterized in that: include: A pressure head (10), a liquid storage cylinder (20), a piston assembly (30) and a one-way valve assembly (40), wherein the pressure head (10) is connected to the piston assembly (30), the one-way valve assembly (40) is connected to the piston assembly (30), and the piston assembly (30) is movably arranged in the liquid storage cylinder (20) along the axial direction of the liquid storage cylinder (20); A vent hole (21) is provided on the side wall of the liquid storage cylinder (20), and the position of the vent hole (21) is not lower than the highest point where the piston assembly (30) is connected to the inner side wall of the liquid storage cylinder (20); A waterproof and breathable membrane (22) is connected to the outer side wall of the liquid storage cylinder (20), and the waterproof and breathable membrane (22) is glued and covered on the outer end of the breathable hole (21).
2. The leak-proof and breathable pump head according to claim 1, characterized in that: The piston assembly (30) includes a hollow piston column (31), a piston head (32) and a spring (33). The upper end of the piston column (31) is connected to the bottom of the pressure head (10), the piston head (32) is connected to the circumferential side wall of the piston column (31), and the spring (33) is sleeved in the piston column (31). The upper end of the spring (33) can abut against the upper end of the piston column (31), and the lower end of the spring (33) can abut against the lower end of the liquid storage cylinder (20). The piston head (32) slides and abuts against the inner side wall of the liquid storage cylinder (20).
3. The leak-proof and breathable pump head according to claim 2, characterized in that: The one-way valve assembly (40) includes an upper column valve (41) and a lower ball valve (42). The upper column valve (41) is sleeved in the piston column (31) and sleeved with the spring (33). The lower ball valve (42) is movably arranged at the lower end of the liquid storage cylinder (20). The lower end of the spring (33) abuts against the lower ball valve (42). The upper column valve (41) is used to control the opening and closing of the upper end of the liquid storage cylinder (20), and the lower ball valve (42) is used to control the opening and closing of the lower end of the liquid storage cylinder (20).
4. The leak-proof and breathable pump head according to claim 3, characterized in that: The piston head (32) includes an air pump plug head (321) and a liquid pump plug head (322) respectively arranged at both ends of the piston column (31); the liquid storage cylinder (20) includes a gas tank (201) and a liquid tank (202) connected to each other up and down; the air pump plug head (321) is in sliding contact with the inner side wall of the gas tank (201); and the liquid pump plug head (322) is in sliding contact with the inner side wall of the liquid tank (202).
5. The leak-proof and breathable pump head according to claim 4, characterized in that: The top of the gas chamber (201) is respectively provided with an air inlet (23) and an air outlet (24), the lower end of the air inlet (23) is provided with an air inlet valve flap (25), and the upper end of the air outlet (24) is provided with an air outlet valve flap (26). When air is inletted, the air inlet valve flap (25) is opened and the air outlet valve flap (26) is closed; when air is out, the air outlet valve flap (26) is opened and the air inlet valve flap (25) is closed.
6. The leak-proof and breathable pump head according to claim 5, characterized in that: The pressure head (10) is provided with a liquid outlet (11) and an infusion channel (12); one end of the infusion channel (12) is communicated with the liquid outlet (11), and the other end is communicated with the upper end of the piston column (31).
7. The leak-proof and breathable pump head according to claim 6, characterized in that: The air outlet (24) is communicated with the lower end of the infusion channel (12).
8. The leak-proof and breathable pump head according to claim 1, characterized in that: The upper end of the liquid storage cylinder (20) is connected to a bottle mouth cover (27), the lower end of the liquid storage cylinder (20) is connected to a straw (28), and the bottle mouth cover (27) is used to be connected to the bottle mouth of the packaging bottle.
9. The leak-proof and breathable pump head according to claim 8, characterized in that: The upper end of the bottle cap (27) is connected to a protective cover (29), and the protective cover (29) is used to cover the pressure head (10).
10. A packaging bottle, characterized in that: The invention comprises a bottle body and the leak-proof and breathable pump head according to any one of claims 1 to 9, wherein the leak-proof and breathable pump head is connected to the bottle body.