Quantitative eyedrop bottle

Abstract

The utility model belongs to the technical field of liquid containers, and particularly relates to a quantitative eyedrop bottle which comprises a liquid storage bottle and a connecting cover connected to the liquid storage bottle, a pump assembly is arranged in the connecting cover in a penetrating mode and comprises a liquid outlet rod, a first liquid outlet channel is arranged in the liquid outlet rod, a fixing base is arranged at the upper end of the liquid outlet rod, and a second liquid outlet channel is arranged at the lower end of the fixing base. A first liquid outlet hole communicated with the first liquid outlet channel is formed in the top of the fixing seat, an elastic liquid outlet seat is sleeved outside the fixing seat, a second liquid outlet hole is formed in the top of the elastic liquid outlet seat, the first liquid outlet hole and the second liquid outlet hole are arranged in a non-coaxial mode, and when the pump assembly is pressed, liquid in the liquid storage bottle is pumped into the first liquid outlet hole through the pump assembly and pushes the top of the elastic liquid outlet seat to move upwards. When the elastic liquid outlet seat is elastically deformed, the liquid outlet hole I is communicated with the liquid outlet hole II; when the pump assembly is loosened, the elastic liquid outlet seat is reset, the top of the elastic liquid outlet seat moves downwards, and the first liquid outlet hole is not communicated with the second liquid outlet hole. The liquid outlet channel in the eyedrop bottle can be prevented from being polluted, and the quality of liquid used next time is prevented from being affected.

Description

Technical field:

[0001] The utility model belongs to the technical field of liquid containers, in particular to a quantitative eye drops bottle. Background technology:

[0002] A Chinese utility model patent (publication number CN219707776U, application date 2023.05.26, publication date 2023.09.19) discloses a liquid spray pump, comprising a connecting cover whose lower end is connected to a liquid storage bottle, a pump assembly being provided through the connecting cover, the pump assembly comprising a pump body, a piston, a liquid discharge rod, a non-metallic spring and a movable rod, a liquid inlet channel connecting the liquid storage bottle and the pump chamber being provided at the lower end of the pump body, the inner side wall of the upper end of the liquid inlet channel being a conical surface 1 with a larger diameter at the top and a smaller diameter at the bottom, a lower valve being provided at the lower end of the movable rod, and the outer side wall of the lower end of the lower valve being a conical surface 2 adapted to the conical surface 1, and the liquid inlet channel being sealed when the conical surface 2 conflicts with the conical surface 1. The upper end of the pump body is fixedly connected to the connecting cover through a filter plug, and the lower end of the liquid discharge rod is slidably arranged in the filter plug, and the upper end of the liquid discharge rod is provided with an annular convex edge, and the non-metallic spring is sleeved outside the liquid discharge rod and limited between the annular convex edge and the filter plug, and the lower end of the movable rod is provided with a sealing portion, and the piston is slidably sleeved on the movable rod, and the lower end of the liquid discharge rod and the sealing portion limit the sliding range of the piston relative to the movable rod, and the upper end of the movable rod extends out of the piston and is axially fixedly connected to the liquid discharge rod, and a liquid discharge channel 1 is provided between the movable rod and the liquid discharge rod, and a liquid discharge channel 2 connecting the liquid discharge channel 1 and the pump chamber is provided between the piston and the movable rod. When the liquid discharge rod moves downward, the movable rod is driven downward, and the liquid in the pump chamber is discharged through the liquid discharge channel 2 and the liquid discharge channel 1. After the liquid discharge rod is reset under the elastic force of the non-metallic spring, the piston disconnects the connecting channel between the liquid discharge channel 2 and the pump chamber. The invention also comprises a pressing cap which is covered on the liquid outlet rod, wherein the pressing cap is provided with a liquid spraying channel which is connected with the liquid outlet channel, and the liquid is sprayed out after being atomized by the spraying plate.

[0003] The disadvantage of the above liquid spray pump is that if the outer cover is not promptly closed after use, the first and second liquid outlet channels and the liquid spray channel are easily contaminated by the external environment, thereby affecting the quality of the liquid during the next use. Summary of the invention:

[0004] The utility model aims to provide a quantitative eye drops bottle, which can prevent the liquid outlet channel inside the eye drops bottle from being contaminated, thereby avoiding affecting the quality of the liquid when it is used next time.

[0005] The utility model is achieved in this way:

[0006] A quantitative eye drop bottle comprises a liquid storage bottle and a connecting cover connected to the liquid storage bottle, wherein a pump assembly is provided through the connecting cover, and the pump assembly comprises a liquid discharge rod, a liquid discharge channel 1 is provided in the liquid discharge rod, a fixing seat is provided at the upper end of the liquid discharge rod, a liquid discharge hole 1 connected to the liquid discharge channel 1 is provided on the top of the fixing seat, an elastic liquid discharge seat is provided on the outside of the fixing seat, a liquid discharge hole 2 is provided on the top of the elastic liquid discharge seat, and the liquid discharge hole 1 and the liquid discharge hole 2 are non-coaxially arranged. When the pump assembly is pressed, the liquid in the liquid storage bottle is pumped into the liquid discharge hole 1 through the pump assembly and pushes the top of the elastic liquid discharge seat to move upward, the elastic liquid discharge seat undergoes elastic deformation, and the liquid discharge hole 1 is connected to the liquid discharge hole 2; when the pump assembly is released, the elastic liquid discharge seat is reset, the top of the elastic liquid discharge seat moves downward, and the liquid discharge hole 1 is disconnected from the liquid discharge hole 2.

[0007] In the above-mentioned quantitative eye drops bottle, the connection method between the liquid outlet hole 1 and the liquid outlet channel 1 is as follows: a liquid outlet channel 2 is provided in the fixing seat, and the upper end of the liquid outlet channel 2 is connected to the liquid outlet hole 1, and the lower end is connected to the liquid outlet channel 1.

[0008] In the above-mentioned quantitative eye drops bottle, the liquid outlet hole 1 and the liquid outlet hole 2 are disconnected in a manner that: a protrusion 1 protrudes from the top of the fixing seat toward the side of the elastic liquid outlet seat, and when the elastic liquid outlet seat is reset, the protrusion 1 blocks the liquid outlet hole 2.

[0009] In the above-mentioned quantitative eye drops bottle, the liquid outlet hole 1 and the liquid outlet hole 2 may be disconnected in the following manner: a protrusion 2 protrudes from the top of the elastic liquid outlet seat toward the side of the fixed seat, and the liquid outlet hole 2 is arranged on the protrusion 2. When the elastic liquid outlet seat is reset, the protrusion 2 contacts the upper surface of the fixed seat, and the upper surface of the fixed seat blocks the liquid outlet hole 2.

[0010] In the above-mentioned quantitative eye drops bottle, the liquid outlet hole 1 and the liquid outlet hole 2 can also be disconnected in the following manner: a bump 1 is protruded from the top of the fixed seat toward the side of the elastic liquid outlet seat, and a bump 2 is protruded from the top of the elastic liquid outlet seat toward the side of the fixed seat, and the liquid outlet hole 2 is arranged on the bump 2. When the elastic liquid outlet seat is reset, the bump 1 contacts the bump 2, and the bump 1 blocks the liquid outlet hole 2.

[0011] In the above-mentioned quantitative eye drops bottle, the connection mode between the fixing seat and the liquid discharge rod can be: the fixing seat is tightly fitted with the upper end of the liquid discharge rod.

[0012] In the above-mentioned quantitative eye drops bottle, the connection mode between the fixing seat and the liquid outlet rod may also be: the fixing seat is threadedly connected to the upper end of the liquid outlet rod.

[0013] In the above-mentioned quantitative eye drops bottle, the elastic liquid outlet seat includes an elastic part arranged around the outer periphery of the fixing seat and a liquid outlet portion arranged above the fixing seat, the second liquid outlet hole is arranged on the liquid outlet portion, and the lower end of the fixing seat is provided with an annular mounting plate, the lower end of the elastic part is mounted on the annular mounting plate through the mounting seat, the mounting seat is sleeved outside the elastic part, and the elastic part and the upper end of the fixing seat both extend out of the mounting seat. When the pump assembly is pressed, the liquid in the liquid storage bottle is pumped into the liquid outlet hole 1 through the pump assembly and pushes the liquid outlet portion upward, the elastic part undergoes elastic deformation, and the liquid outlet hole 1 is connected with the liquid outlet hole 2; when the pump assembly is released, the elastic part is reset, the liquid outlet portion moves downward, and the liquid outlet hole 1 is no longer connected with the liquid outlet hole 2.

[0014] In the above-mentioned quantitative eye drops bottle, the outer cover of the mounting seat is provided with a dust cover, and the dust cover is provided with a blocking column for blocking the second liquid outlet hole.

[0015] In the above-mentioned quantitative eye drops bottle, the elastic part includes a cylindrical part sleeved on the outer circumference of the fixing seat and an annular assembly part arranged at the lower end of the cylindrical part. The inner ring of the annular assembly part is connected to the lower end of the cylindrical part, and the outer circumference of the annular assembly part is clamped between the mounting seat and the annular mounting plate.

[0016] In the above-mentioned quantitative eye drops bottle, the upper surface of the annular mounting plate is concave to form a groove, and a supporting portion extending into the groove is provided below the annular assembly portion.

[0017] In the above-mentioned quantitative eye drops bottle, a limiting protrusion is provided on the inner side wall of the mounting seat for limiting the lower position of the annular mounting plate.

[0018] In the above-mentioned quantitative eye drops bottle, the pump assembly also includes a pump body, a piston, a non-metallic spring, a movable rod and an assembly seat. The upper end of the pump body is connected to the assembly seat, the lower end of the liquid discharge rod is slidably arranged in the assembly seat, the upper end of the liquid discharge rod is provided with an annular convex edge, the non-metallic spring is sleeved outside the liquid discharge rod, and is limited between the annular convex edge and the assembly seat, the piston is slidably sleeved on the movable rod, the upper end of the movable rod extends out of the piston axially and is fixedly connected to the liquid discharge rod, and the liquid discharge channel 1 is formed between the movable rod and the liquid discharge rod, the lower end of the movable rod is provided with a sealing portion, the lower end of the liquid discharge rod and the sealing portion limit the sliding range of the piston relative to the movable rod, and the piston is in the pump body. The cavity is divided into an upper cavity and a lower cavity, and a liquid outlet channel three connecting the liquid outlet channel one and the lower cavity is provided between the piston and the movable rod, and a liquid inlet channel connecting the inner cavity of the liquid storage bottle and the lower cavity is provided at the lower end of the pump body, and a one-way valve is provided on the liquid inlet channel. When the liquid outlet rod moves downward, the one-way valve blocks the liquid inlet channel under the action of the pressure difference between the lower cavity and the liquid storage bottle, and the liquid in the lower cavity is discharged through the liquid outlet channel three and the liquid outlet channel one; when the liquid outlet rod is loosened, the liquid outlet rod is reset under the elastic force of the non-metallic spring, and the one-way valve opens the liquid inlet channel under the action of the pressure difference between the lower cavity and the liquid storage bottle, and the liquid in the liquid storage bottle enters the lower cavity through the liquid inlet channel, and the piston and the sealing part clash to disconnect the communication channel between the liquid outlet channel three and the lower cavity.

[0019] In the above-mentioned quantitative eye drops bottle, the annular convex edge is arranged below the annular mounting plate.

[0020] In the above-mentioned quantitative eye drops bottle, the connection method between the pump body and the assembly seat is: a hook is provided on the upper end of the pump body, and a slot adapted to the hook is provided on the assembly seat, and the pump body is fixedly connected to the assembly seat by being engaged in the slot through the hook.

[0021] In the above-mentioned quantitative eye drops bottle, a pressure cover is provided on the outside of the mounting seat. The pressure cover is cylindrical with an open lower end. A through hole is provided on the upper end of the pressure cover for the fixing seat to extend out, and the lower end of the pressure cover extends to the outside of the liquid storage bottle.

[0022] In the above-mentioned quantitative eye drops bottle, the liquid storage bottle includes an outer bottle and an inner bottle with variable volume. The inner bottle is arranged in the outer bottle, and the upper end of the inner bottle is fixedly connected to the outer bottle. The outer bottle is provided with an air inlet connecting the outside and the inner cavity.

[0023] In the above-mentioned quantitative eye drops bottle, a second limiting protrusion is provided on the outer side wall of the upper end of the outer bottle, a first limiting plate and a third limiting protrusion are provided on the inner side of the connecting cover, a second limiting plate is provided on the outer periphery of the assembly seat, and the second limiting plate and the second limiting protrusion are clamped between the first limiting plate and the third limiting protrusion.

[0024] In the above-mentioned quantitative eye drops bottle, the material of the liquid storage bottle is LDPE (low-density polyethylene), the material of the connecting cover is HDPE (high-density polyethylene), the material of the fixing seat is HDPE (high-density polyethylene), the material of the elastic liquid outlet seat is LDPE (low-density polyethylene), the material of the mounting seat is HDPE (high-density polyethylene), and the material of the pressure cap is HDPE (high-density polyethylene).

[0025] The outstanding advantages of the utility model compared with the prior art are:

[0026] 1. The utility model is provided with a fixed seat and an elastic liquid outlet seat, and a liquid outlet hole 1 is provided on the top of the fixed seat, and a liquid outlet hole 2 is provided on the top of the elastic liquid outlet seat. After use, the elastic liquid outlet seat is reset, disconnecting the connection between the liquid outlet hole 1 and the liquid outlet hole 2, effectively preventing external air from entering the liquid outlet hole 1, thereby effectively preventing the liquid outlet hole 1 and the liquid outlet channel 1 from being contaminated, avoiding affecting the quality of the liquid during the next use;

[0027] 2. The utility model provides an outer bottle and an inner bottle, and the volume of the inner bottle is variable, so that there is no need to introduce air to balance the pressure difference between the inside and outside of the inner bottle cap, thereby effectively preventing air from entering and contaminating the liquid in the inner bottle, effectively delaying the deterioration of the liquid and extending the service life of the liquid. Description of the drawings:

[0028] Figure 1 It is a cross-sectional view of the sealing state of the utility model;

[0029] Figure 2 It is a cross-sectional view of the utility model in the water outlet state without the dust cover;

[0030] Figure 3 It is a cross-sectional view of the elastic liquid outlet seat of the utility model.

[0031] Figure numerals: 1, liquid storage bottle; 2, connecting cover; 3, liquid discharge rod; 4, liquid discharge channel 1; 5, fixing seat; 6, liquid discharge hole 1; 7, elastic liquid discharge seat; 71, elastic part; 711, cylindrical part; 712, annular assembly part; 713, supporting part; 72, liquid discharge part; 8, liquid discharge hole 2; 9, liquid discharge channel 2; 10, annular mounting plate; 11, mounting seat; 12, groove; 13, limiting protrusion 1; 14, pump body; 15, piston ; 16. Non-metallic spring; 17. Movable rod; 18. Assembly seat; 19. Annular ridge; 20. Sealing part; 21. Liquid outlet channel three; 22. Liquid inlet channel; 23. One-way valve; 24. Outer bottle; 25. Inner bottle; 26. Air inlet hole; 27. Limiting protrusion two; 28. Limiting plate one; 29. ​​Limiting protrusion three; 30. Limiting plate two; 31. Dust cover; 32. Blocking column; 33. Pressure cover; 34. Bump one; 35. Bump two. Specific implementation method:

[0032] The present invention is further described below with reference to specific embodiments. Figure 1 —3:

[0033] A quantitative eye drops bottle, comprising a liquid storage bottle 1 and a connecting cover 2 connected to the liquid storage bottle 1, wherein a pump assembly is provided through the connecting cover 2, and the pump assembly comprises a liquid discharge rod 3, a liquid discharge channel 1 4 is provided in the liquid discharge rod 3, a fixing seat 5 is provided at the upper end of the liquid discharge rod 3, a liquid discharge hole 1 6 connected to the liquid discharge channel 1 4 is provided at the top of the fixing seat 5, an elastic liquid discharge seat 7 is sheathed on the outside of the fixing seat 5, a liquid discharge hole 2 8 is provided at the top of the elastic liquid discharge seat 7, and the liquid discharge hole 1 6 and the liquid discharge hole 2 8 are non-coaxially arranged. When the pump assembly is pressed, the liquid in the liquid storage bottle 1 is pumped into the liquid discharge hole 1 6 through the pump assembly and pushes the top of the elastic liquid discharge seat 7 to move upward, the elastic liquid discharge seat 7 undergoes elastic deformation, and the liquid discharge hole 1 6 is connected with the liquid discharge hole 2 8; when the pump assembly is released, the elastic liquid discharge seat 7 is reset, the top of the elastic liquid discharge seat 7 moves downward, and the liquid discharge hole 1 6 is not connected with the liquid discharge hole 2 8.

[0034] The working principle of this utility model is as follows: Figure 1-3As shown, when the pump assembly is pressed, the liquid in the liquid storage bottle 1 is pumped into the liquid outlet hole 1 6 through the pump assembly and pushes the top of the elastic liquid outlet seat 7 to move upward, the elastic liquid outlet seat 7 is elastically deformed, the liquid outlet hole 1 6 is connected with the liquid outlet hole 2 8, and the liquid flows out through the liquid outlet hole 2 8; when the pump assembly is released, the elastic liquid outlet seat 7 is reset, the top of the elastic liquid outlet seat 7 moves downward, and the liquid outlet hole 1 6 is no longer connected with the liquid outlet hole 2 8.

[0035] like Figure 1-3 As shown, the present invention is provided with a fixing seat 5 and an elastic liquid outlet seat 7, and a liquid outlet hole 1 6 is provided on the top of the fixing seat 5, and a liquid outlet hole 2 8 is provided on the top of the elastic liquid outlet seat 7. After use, the elastic liquid outlet seat 7 is reset, disconnecting the connection between the liquid outlet hole 1 6 and the liquid outlet hole 2 8, effectively preventing external air from entering the liquid outlet hole 1 6, thereby effectively preventing the liquid outlet hole 1 6 and the liquid outlet channel 1 4 from being contaminated, thereby avoiding affecting the quality of the liquid during the next use.

[0036] The connection mode between the liquid outlet hole 1 6 and the liquid outlet channel 1 4 is as follows: a liquid outlet channel 2 9 is provided in the fixing seat 5 , and the upper end of the liquid outlet channel 2 9 is connected to the liquid outlet hole 1 6 , and the lower end is connected to the liquid outlet channel 1 4 .

[0037] In order to enable the liquid to better push the top of the elastic liquid outlet seat 7 to move upward and achieve a better liquid discharge effect, a bump 1 34 is protruded from the top of the fixed seat 5 toward the side of the elastic liquid outlet seat 7, and a bump 2 35 is protruded from the top of the elastic liquid outlet seat 7 toward the side of the fixed seat 5. The liquid outlet hole 2 8 is set on the bump 2 35. When the elastic liquid outlet seat 7 is reset, the bump 1 34 contacts the bump 2 35, and the bump 1 34 blocks the liquid outlet hole 2 8.

[0038] The connection mode between the fixing seat 5 and the liquid outlet rod 3 is: the fixing seat 5 is tightly fitted to the upper end of the liquid outlet rod 3 .

[0039] The structure and installation structure of the elastic liquid outlet seat 7: Figure 1-3 As shown, the elastic liquid outlet seat 7 includes an elastic portion 71 arranged around the outer periphery of the fixing seat 5 and a liquid outlet portion 72 arranged above the fixing seat 5, the liquid outlet hole 2 8 is arranged on the liquid outlet portion 72, and the lower end of the fixing seat 5 is provided with an annular mounting plate 10, and the lower end of the elastic portion 71 is mounted on the annular mounting plate 10 through the mounting seat 11, and the mounting seat 11 is sleeved outside the elastic portion 71, and the elastic portion 71 and the upper end of the fixing seat 5 both extend out of the mounting seat 11. When the pump assembly is pressed, the liquid in the liquid storage bottle 1 is pumped into the liquid outlet hole 1 6 through the pump assembly and pushes the liquid outlet portion 72 to move upward, the elastic portion 71 undergoes elastic deformation, and the liquid outlet hole 1 6 is connected with the liquid outlet hole 2 8; when the pump assembly is released, the elastic portion 71 is reset, the liquid outlet portion 72 moves downward, and the liquid outlet hole 1 6 is no longer connected with the liquid outlet hole 2 8.

[0040] In order to prevent the second liquid outlet hole 8 from being exposed to the air and contaminated, the outer cover of the mounting seat 11 is provided with a dust cover 31 , and the dust cover 31 has a blocking column 32 for blocking the second liquid outlet hole 8 .

[0041] The structure of the elastic portion 71: The elastic portion 71 comprises a cylindrical portion 711 that fits over the outer circumference of the fixing seat 5, and an annular assembly portion 712 disposed at the lower end of the cylindrical portion 711. The inner ring of the annular assembly portion 712 connects to the lower end of the cylindrical portion 711, and the outer circumference of the annular assembly portion 712 is sandwiched between the mounting seat 11 and the annular mounting plate 10. When the pump assembly is pressed, the liquid in the liquid storage bottle 1 is pumped into the liquid outlet hole 6 through the pump assembly, pushing the liquid outlet portion 72 upward, causing the annular assembly portion 712 to rotate upward and the cylindrical portion 711 to move upward. When the pump assembly is released, the annular assembly portion 712 returns downward, driving the cylindrical portion 711 downward and back to its original position, which in turn drives the liquid outlet portion 72 downward and back to its original position.

[0042] In order to support the annular assembly portion 712 , the upper surface of the annular mounting plate 10 is concave to form a groove 12 , and a supporting portion 713 extending into the groove 12 is provided below the annular assembly portion 712 .

[0043] The mounting structure of the annular mounting plate 10: A limiting protrusion 13 for limiting the lower position of the annular mounting plate 10 is provided on the inner side wall of the mounting seat 11.

[0044] The specific structure of the pump assembly: the pump assembly also includes a pump body 14, a piston 15, a non-metallic spring 16, a movable rod 17 and an assembly seat 18. The upper end of the pump body 14 is connected to the assembly seat 18, and the lower end of the liquid discharge rod 3 is slidably arranged in the assembly seat 18. The upper end of the liquid discharge rod 3 is provided with an annular ridge 19, and the non-metallic spring 16 is sleeved outside the liquid discharge rod 3 and limited between the annular ridge 19 and the assembly seat 18. The piston 15 is slidably sleeved on the movable rod 17. The upper end of the movable rod 17 extends out of the piston 15 and is axially fixedly connected to the liquid discharge rod 3, and the liquid discharge channel 4 is formed between the movable rod 3 and the liquid discharge rod 3. The lower end of the movable rod 17 is provided with a sealing portion 20. The lower end of the liquid discharge rod 3 and the sealing portion 20 limit the sliding range of the piston 15 relative to the movable rod 17. The piston 15 will pump the pump body. The inner cavity 14 is divided into an upper cavity and a lower cavity, and a liquid outlet channel 3 21 connecting the liquid outlet channel 1 4 and the lower cavity is provided between the piston 15 and the movable rod 17. A liquid inlet channel 22 connecting the inner cavity of the liquid storage bottle 1 and the lower cavity is provided at the lower end of the pump body 14. A one-way valve 23 is provided on the liquid inlet channel 22. When the liquid outlet rod 3 moves downward, the one-way valve 23 blocks the liquid inlet channel 22 under the action of the pressure difference between the lower cavity and the liquid storage bottle 1, and the liquid in the lower cavity is discharged through the liquid outlet channel 3 21 and the liquid outlet channel 1 4; when the liquid outlet rod 3 is loosened, the liquid outlet rod 3 is reset under the elastic force of the non-metallic spring 16, and the one-way valve 23 opens the liquid inlet channel 22 under the action of the pressure difference between the lower cavity and the liquid storage bottle 1, and the liquid in the liquid storage bottle 1 enters the lower cavity through the liquid inlet channel 22. The piston 15 and the sealing part 20 conflict to disconnect the communication channel between the liquid outlet channel 3 21 and the lower cavity.

[0045] Working principle of the pump assembly: When the liquid discharge rod 3 moves downward, it drives the movable rod 17 to move downward. After the liquid discharge rod 3 contacts the piston 15, it pushes the piston 15 downward. The one-way valve 23 blocks the liquid inlet channel 22 under the pressure difference between the lower chamber and the liquid storage bottle 1. The liquid in the lower chamber is discharged through the liquid discharge channel 3 21 and the liquid discharge channel 1 4. Figure 2 As shown; after the liquid discharge rod 3 is loosened, the liquid discharge rod 3 moves upward under the elastic force of the non-metallic spring 16, and the movable rod 17 moves upward. The sealing portion 20 at the lower end of the movable rod 17 contacts the piston 15 and disconnects the communication channel between the liquid discharge channel 3 21 and the lower chamber, and drives the piston 15 to move upward. The one-way valve 23 opens the liquid inlet channel 22 under the pressure difference between the lower chamber and the liquid storage bottle 1. The liquid in the liquid storage bottle 1 enters the lower chamber through the liquid inlet channel 22 until the pressure difference between the lower chamber and the liquid storage bottle 1 is equal, and the one-way valve 23 blocks the liquid inlet channel 22, as shown in 1.

[0046] The structure of the one-way valve 23: The one-way valve 23 includes a mounting ring installed on the pump body 14, a valve core arranged in the mounting ring, and an elastic connecting part connecting the mounting ring and the valve core. When the pressure in the liquid storage bottle 1 is greater than the pressure in the lower chamber, the valve core is pushed upward, the elastic connecting part is deformed, and the valve core opens the liquid inlet channel 22; when the pressure in the liquid storage bottle 1 is equal to the pressure in the lower chamber, the elastic connecting part is reset, and the valve core blocks the liquid inlet channel 22; when the pressure in the liquid storage bottle 1 is less than the pressure in the lower chamber, the valve core still blocks the liquid inlet channel 22.

[0047] Furthermore, the annular protrusion 22 is arranged below the annular mounting plate 10 .

[0048] The pump body 14 is connected to the assembly seat 21 in the following manner: a hook is provided on the upper end of the pump body 14 , and a slot matching the hook is provided on the assembly seat 21 , and the pump body 14 is fixedly connected to the assembly seat 21 by being engaged in the slot with the hook.

[0049] To facilitate pressing the mounting base 11, a pressure cap 33 is mounted on the mounting base 11. The pressure cap 33 is cylindrical with an open lower end. The upper end of the pressure cap 33 is provided with a through hole for the fixing base 5 to extend outward. The lower end of the pressure cap 33 extends to the outside of the liquid storage bottle 1. Pressing the pressure cap 33 drives the mounting base 11, the elastic liquid outlet seat 7, the fixing base 5, and the liquid outlet rod 3 to move downward.

[0050] The structure of the liquid storage bottle 1 includes an outer bottle 24 and a variable-volume inner bottle 25. The inner bottle 25 is positioned within the outer bottle 24, with its upper end fixedly connected to the outer bottle 24. The outer bottle 24 is provided with an air inlet 26 that connects the exterior and interior, thereby balancing the pressure difference between the interior and exterior of the outer bottle 24. As the amount of liquid in the inner bottle cap 25 decreases, the inner bottle 25 collapses, and the volume of the inner bottle 25 decreases.

[0051] The utility model provides an outer bottle 24 and an inner bottle 25, and the volume of the inner bottle 25 is variable, so that there is no need to introduce air to balance the pressure difference between the inside and outside of the inner bottle cap 25, thereby effectively preventing air from entering and contaminating the liquid in the inner bottle 25, effectively delaying the deterioration of the liquid, and extending the service life of the liquid.

[0052] In this embodiment, the inner bottle cap 25 is a plastic film bag.

[0053] The installation structure of the liquid storage bottle 1, the connecting cover 2 and the assembly seat 21: a second limiting protrusion 27 is provided on the outer side wall of the upper end of the outer bottle 24, a limiting plate 1 28 and a limiting protrusion 3 29 are provided on the inner side of the connecting cover 2, and a limiting plate 2 30 is provided on the outer periphery of the assembly seat 18, and the limiting plate 2 30 and the limiting protrusion 2 27 are clamped between the limiting plate 1 28 and the limiting protrusion 3 29.

[0054] Preferably, the material of the liquid storage bottle 1 is LDPE (low-density polyethylene), the material of the connecting cover 2 is HDPE (high-density polyethylene), the material of the fixing seat 5 is HDPE (high-density polyethylene), the material of the elastic liquid outlet seat 7 is LDPE (low-density polyethylene), the material of the mounting seat 11 is HDPE (high-density polyethylene), and the material of the pressure cap 33 is HDPE (high-density polyethylene).

[0055] The above embodiment is only one of the preferred embodiments of the present invention and is not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes made based on the shape, structure, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A quantitative eye drop bottle, comprising a liquid storage bottle (1) and a connecting cover (2) connected to the liquid storage bottle (1), wherein a pump assembly is provided through the connecting cover (2), the pump assembly comprises a liquid discharge rod (3), and a liquid discharge channel (4) is provided in the liquid discharge rod (3), characterized in that: The upper end of the liquid discharge rod (3) is provided with a fixed seat (5), the top of the fixed seat (5) is provided with a liquid discharge hole (6) connected to the liquid discharge channel (4), the fixed seat (5) is provided with an elastic liquid discharge seat (7) on the outside, the top of the elastic liquid discharge seat (7) is provided with a liquid discharge hole (8), the liquid discharge hole (6) and the liquid discharge hole (8) are non-coaxially arranged, when the pump assembly is pressed, the liquid in the liquid storage bottle (1) is pumped into the liquid discharge hole (6) through the pump assembly and pushes the top of the elastic liquid discharge seat (7) to move upward, the elastic liquid discharge seat (7) undergoes elastic deformation, and the liquid discharge hole (6) is connected to the liquid discharge hole (8); when the pump assembly is released, the elastic liquid discharge seat (7) is reset, the top of the elastic liquid discharge seat (7) moves downward, and the liquid discharge hole (6) is not connected to the liquid discharge hole (8).

2. A quantitative eye drops bottle according to claim 1, characterized in that: The elastic liquid outlet seat (7) comprises an elastic portion (71) arranged around the outer periphery of the fixed seat (5) and a liquid outlet portion (72) arranged above the fixed seat (5); the second liquid outlet hole (8) is arranged on the liquid outlet portion (72); an annular mounting plate (10) is provided at the lower end of the fixed seat (5); the lower end of the elastic portion (71) is mounted on the annular mounting plate (10) through a mounting seat (11); the mounting seat (11) is sleeved on the outer periphery of the elastic portion (71); The elastic part (71) and the upper end of the fixing seat (5) both extend out of the mounting seat (11). When the pump assembly is pressed, the liquid in the liquid storage bottle (1) is pumped into the liquid outlet hole 1 (6) through the pump assembly and pushes the liquid outlet part (72) upward, the elastic part (71) is elastically deformed, and the liquid outlet hole 1 (6) is connected to the liquid outlet hole 2 (8); when the pump assembly is released, the elastic part (71) is reset, the liquid outlet part (72) moves downward, and the liquid outlet hole 1 (6) is no longer connected to the liquid outlet hole 2 (8).

3. A quantitative eye drops bottle according to claim 2, characterized in that: The elastic portion (71) comprises a cylindrical portion (711) sleeved on the outer periphery of the fixing seat (5) and an annular assembly portion (712) arranged at the lower end of the cylindrical portion (711); the inner ring of the annular assembly portion (712) is connected to the lower end of the cylindrical portion (711); and the outer periphery of the annular assembly portion (712) is clamped between the mounting seat (11) and the annular mounting plate (10).

4. A quantitative eye drops bottle according to claim 3, characterized in that: The upper surface of the annular mounting plate (10) is concave to form a groove (12), and a support portion (713) extending into the groove (12) is provided below the annular assembly portion (712).

5. A quantitative eye drops bottle according to claim 3, characterized in that: A limiting protrusion (13) for lower limiting the annular mounting plate (10) is provided on the inner side wall of the mounting seat (11).

6. A quantitative eye drops bottle according to claim 1, characterized in that: The pump assembly further comprises a pump body (14), a piston (15), a non-metallic spring (16), a movable rod (17) and an assembly seat (18). The upper end of the pump body (14) is connected to the assembly seat (18). The lower end of the liquid discharge rod (3) is slidably arranged in the assembly seat (18). The upper end of the liquid discharge rod (3) is provided with an annular convex edge (19). The non-metallic spring (16) is sleeved outside the liquid discharge rod (3) and is limited between the annular convex edge (19) and the assembly seat (18). The piston (15) is slidably mounted on the movable rod (17). The upper end of the movable rod (17) extends out of the piston (15) and is axially fixedly connected to the liquid outlet rod (3). The liquid outlet channel (4) is formed between the movable rod (17) and the liquid outlet rod (3). The lower end of the movable rod (17) is provided with a sealing portion (20). The lower end of the liquid outlet rod (3) and the sealing portion (20) limit the sliding range of the piston (15) relative to the movable rod (17). The piston (15) moves the pump body (14 ) the inner cavity is divided into an upper cavity and a lower cavity, a liquid outlet channel 1 (4) communicating with the liquid outlet channel 3 (21) of the lower cavity is provided between the piston (15) and the movable rod (17), a liquid inlet channel (22) communicating with the inner cavity of the liquid storage bottle (1) and the lower cavity is provided at the lower end of the pump body (14), a one-way valve (23) is provided on the liquid inlet channel (22), and when the liquid outlet rod (3) moves downward, the one-way valve (23) blocks the liquid inlet channel (22) under the action of the pressure difference between the lower cavity and the liquid storage bottle (1) The liquid in the lower chamber is discharged through the liquid outlet channel 3 (21) and the liquid outlet channel 1 (4); the liquid outlet rod (3) is loosened, and the liquid outlet rod (3) is reset under the elastic force of the non-metallic spring (16), and the one-way valve (23) opens the liquid inlet channel (22) under the pressure difference between the lower chamber and the liquid storage bottle (1), and the liquid in the liquid storage bottle (1) enters the lower chamber through the liquid inlet channel (22), and the piston (15) and the sealing part (20) are in contact with each other to disconnect the communication channel between the liquid outlet channel 3 (21) and the lower chamber.

7. A quantitative eye drops bottle according to claim 6, characterized in that: The liquid storage bottle (1) comprises an outer bottle (24) and an inner bottle (25) with a variable volume. The inner bottle (25) is arranged in the outer bottle (24), and the upper end of the inner bottle (25) is fixedly connected to the outer bottle (24). The outer bottle (24) is provided with an air inlet (26) communicating with the outside and the inner cavity.

8. A quantitative eye drops bottle according to claim 7, characterized in that: A second limiting protrusion (27) is provided on the outer side wall of the upper end of the outer bottle (24), a first limiting plate (28) and a third limiting protrusion (29) are provided on the inner side of the connecting cover (2), a second limiting plate (30) is provided on the outer periphery of the assembly seat (18), and the second limiting plate (30) and the second limiting protrusion (27) are clamped between the first limiting plate (28) and the third limiting protrusion (29).

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