A stopper for a dropper bottle and a dropper bottle

Abstract

This utility model discloses an inner stopper for a dropper bottle and a dropper bottle. The inner stopper includes a dropper channel, an outer sealing part, and an inner sealing part. The inner sealing part is located below the outer sealing part, and the dropper channel is located inside the outer sealing part. The dropper channel includes an inner recess and a dropper storage channel. The inner recess is located at the outlet end of the dropper head and includes a channel that is recessed from the outlet inward, with an anti-drip fine hole at the end of the channel. The inner recess is connected to the dropper storage channel through the anti-drip fine hole, and the dropper storage channel extends to the inlet end. The dropper bottle has a bottle body as the container and an outer protective cover as the outer cap. The inner wall of the outer cap is provided with a three-threaded internal thread for matching the three-threaded external thread of the inner stopper. A sealing post is provided at the inner top of the outer cap for inserting into the inner recess of the dropper head to form a seal. The opening of the bottle body connecting to the inner stopper is provided with a protrusion and a recess, and is equipped with a snap ring and a sealing groove.

Description

Technical Field

[0001] This utility model belongs to the field of pharmaceutical packaging technology, specifically relating to an inner stopper for a dropper bottle and a dropper bottle. Background Technology

[0002] Currently, eye drop devices on the market have several technical defects. When used upside down, the liquid cannot be dispensed in drops, but rather sprays out in a straight line. This results in the liquid dripping out even when it is not ready to be dispensed, and there are also technical defects such as squeezing the liquid to dispense it, resulting in a large amount of liquid being sprayed out in a straight, continuous stream. Utility Model Content

[0003] This application provides an inner stopper for a dropper bottle and a dropper bottle. The inner stopper includes a dropper channel, an outer sealing part, and an inner sealing part.

[0004] The inner sealing part is located below the outer sealing part. The outer sealing part is used to connect to the outer protective cover, and the inner sealing part is used to seal the connected container.

[0005] The drip channel is located inside the outer sealing part, and the outlet end of the drip channel extends out of the outer sealing part to form a drip column head, while the inlet end of the drip channel extends out of the inner sealing part to extend into and connect with the container.

[0006] The drip channel includes an indentation and a drip storage channel;

[0007] The concave opening is located at the outlet end of the droplet column head. The concave opening includes a channel that is recessed inward from the outlet, and an anti-drip pore is provided at the end of the channel.

[0008] The concave opening is connected to the drip storage channel through anti-drip fine holes, and the drip storage channel extends to the liquid inlet end.

[0009] The technical solution provided in this application also has the following technical features:

[0010] Preferably, in one embodiment of this application, the length of the droplet column is greater than 2 mm.

[0011] Preferably, in one embodiment of this application, the diameter of the anti-drip pores is less than 2 mm.

[0012] Preferably, in one embodiment of this application, the width and length of the cross-section of the anti-drip orifice perpendicular to the liquid flow direction are both less than 2 mm.

[0013] Preferably, in one embodiment of this application, the diameter of the anti-drip orifice is 0.15-0.4 times the diameter of the flow channel orifice at the outlet end of the droplet column head.

[0014] Preferably, in one embodiment of this application, the diameter of the anti-drip orifice is 0.19-0.2 times the diameter of the flow channel orifice at the outlet end of the droplet column head.

[0015] Preferably, in one embodiment of this application, the concave opening is composed of a dripping funnel-shaped opening, a uniform flow channel, and a gradually narrowing flow channel connected in sequence.

[0016] Preferably, in one embodiment of this application, the dripping funnel is formed by a smooth edge of the outlet end of a uniform flow channel, the uniform flow channel being a straight circular channel, and the gradually narrowing flow channel being a circular channel with a gradually decreasing cross-sectional area.

[0017] Preferably, in one embodiment of this application, the lower sealing portion is provided with an annular groove, the groove being used to seal the connecting container;

[0018] The inner walls on both sides of the groove are respectively provided with a snap ring and a sealing groove. The sealing groove is used to form a seal with the inner wall of the container opening, and the snap ring is used to form an anti-detachment connection with the outer wall of the container opening.

[0019] Preferably, in one embodiment of this application, the outer surface of the outer sealing part is provided with a three-headed external thread.

[0020] Preferably, in one embodiment of this application, anti-rotation teeth are provided on the outer surface of the inner sealing portion.

[0021] Preferably, in one embodiment of this application, an anti-rotation block is provided on the outer end face of the liquid inlet end of the dripping temporary storage channel.

[0022] Preferably, in one embodiment of this application, the outer surface of the drip channel is provided with reinforcing ribs, which are used to connect the outer sealing part and / or the inner sealing part.

[0023] Preferably, in one embodiment of this application, the maximum flow cross-sectional radius of the liquid inlet end of the drip storage channel is 2-4 times the flow cross-sectional radius of the uniform flow channel of the concave opening.

[0024] Preferably, in one embodiment of this application, the maximum flow cross-sectional radius of the liquid inlet end of the drip storage channel is three times the flow cross-sectional radius of the uniform flow channel of the concave opening.

[0025] Preferably, in one embodiment of this application, the flow cross-section of the liquid inlet end of the drip storage channel towards the anti-drip pore remains unchanged or gradually decreases.

[0026] Preferably, in one embodiment of this application, the drip storage channel covers the concave opening, and the gap between the channel and the outer wall of the concave opening is provided to facilitate manufacturing and save injection molding materials;

[0027] Preferably, in one embodiment of this application, a sealing connection is provided at the anti-drip fine hole near the concave opening of the drip storage channel, connecting the outer wall of the concave opening or the end face where the anti-drip fine hole is located, so that the gap between the drip storage channel and the outer wall of the concave opening is a sealed cavity, preventing the medicine from entering, and the medicine that enters will enter the dead corner and cannot be utilized.

[0028] Preferably, in one embodiment of this application, the end of the drip storage channel is connected to the end face of the anti-drip hole near the concave opening, which is the terminal end of the drip storage channel.

[0029] Preferably, in one embodiment of this application, a dropper bottle uses the aforementioned inner stopper, the container is a bottle body, and the outer protective cover is an outer cap;

[0030] The inner wall of the outer cover is provided with a three-thread internal thread for matching the three-thread external thread of the inner plug;

[0031] A sealing post is provided at the inner top of the outer cover, which is used to insert into the inner recess of the droplet head to form a seal;

[0032] The opening of the inner plug connecting the bottle body is provided with protrusions and recesses, and is equipped with a snap ring and a sealing groove.

[0033] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0034] This application addresses the problem of inverted liquid dripping and straight-line spraying, enabling precise control of the dripping dosage, flow rate, and velocity. Furthermore, the entire top structure facilitates mold processing. Adjusting the composition of the dripping channels at the top allows for effective control of the dripping dosage.

[0035] 1. The concave opening of this application utilizes the inwardly recessed channel of the outlet to create a dripping tendency that slows down the dripping and avoids the dripping in a straight line; the anti-drip fine holes effectively control the flow channel formed by the extrusion, so that the kinetic energy of the liquid after extrusion is absorbed by the rapidly expanding concave opening.

[0036] 2. To address the issues of inverted dripping and operational difficulties, a channel is designed to connect to the concave opening, serving as a drip storage channel. This allows the liquid to collect within the channel and only enter the concave opening through anti-drip micropores before dripping out. This controls the flow rate and increases the pressure required for compression, preventing accidental dripping defects caused by forceful compression or temperature rise. Temperature rise causes the internal air to expand, compressing the liquid outward. This application, through the combination of the concave opening and the drip storage channel, along with the anti-drip micropores, achieves effective drip control. Furthermore, the concave opening is designed with a channel that can be further narrowed for more precise droplet control.

[0037] 3. This application utilizes an indented opening and a drip storage channel, requiring force to be applied to the bottle structure before the bottle deforms and the liquid can drip out. This achieves precise control of the dripping dosage, flow rate, and flow velocity, with a control accuracy within 10%, ensuring dosage stability and preventing leakage when inverted.

[0038] 4. The three-threaded connection of this application is not a common single-turn threaded structure, but is composed of three turns of thread, which can effectively improve the stability of the connection and ensure the seal between the outer cover and the inner plug.

[0039] 5. The shape of the droplet column in this application facilitates mold processing and improves mold life. Attached Figure Description

[0040] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0041] Figure 1 This is a perspective view of a dropper bottle according to the present invention;

[0042] Figure 2 This is a front view of a dropper bottle according to the present invention;

[0043] Figure 3 This is a top view of a dropper bottle according to the present invention;

[0044] Figure 4 This is a cross-sectional view (AA) of a dropper bottle according to the present invention;

[0045] Figure 5 This is a BB cross-sectional view of a dropper bottle according to the present invention;

[0046] Figure 6 This is an exploded view of a dropper bottle according to the present invention;

[0047] Figure 7 This is a front view of an inner stopper for a dropper bottle according to the present invention;

[0048] Figure 8 This is a CC cross-sectional view of an inner stopper for a dropper bottle according to the present invention;

[0049] Figure 9 A top-view color stereoscopic image of an inner stopper for a dropper bottle according to this utility model;

[0050] Figure 10 A top-view black and white perspective view of the inner stopper of a dropper bottle according to this utility model;

[0051] Figure 11 This is a perspective view of the inner stopper of a dropper bottle according to the present invention, taken from an upward angle.

[0052] Figure 12 This is a three-dimensional sectional view of an inner stopper for a dropper bottle according to the present invention;

[0053] Figure 13 This is a cross-sectional view of a variant structure of the inner stopper of a dropper bottle according to the present invention;

[0054] Figure 14 This is a cross-sectional view of a variant structure of the inner stopper of a dropper bottle according to the present invention;

[0055] Components in the diagram:

[0056] 100. Outer cover

[0057] 101. Three-start internal thread

[0058] 1041. Sealing column

[0059] 200. Internal plug

[0060] 201. Three-start external thread

[0061] 202. Anti-rotation gear

[0062] 203. Anti-rotation block

[0063] 204. Droplet column head

[0064] 2041, Inward notch

[0065] 20411. Anti-drip pores

[0066] 2042, Drip Storage Channel

[0067] 2043, Reinforcing Rib

[0068] 205. Thread loop

[0069] 206. Sealing recessed groove

[0070] 300. Bottle body. Detailed Implementation

[0071] The specific embodiments of this application will be further described in detail below with reference to the accompanying drawings. These embodiments are only for illustrating this application and are not intended to limit the scope of this utility model.

[0072] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0073] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0074] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0075] like Figure 7-12 A type of inner stopper for a dropper bottle, the inner stopper 200 including a dropper channel, an outer sealing part, and an inner sealing part;

[0076] The inner sealing part is located below the outer sealing part. The outer sealing part is used to connect to the outer protective cover, and the inner sealing part is used to seal the connected container.

[0077] The drip channel is located inside the outer sealing part, and the outlet end of the drip channel extends out of the outer sealing part to form a drip column head 204. The inlet end of the drip channel extends out of the inner sealing part to extend into and connect with the container.

[0078] The drip channel includes an indentation 2041 and a drip storage channel 2042;

[0079] The concave opening 2041 is provided at the outlet end of the droplet column head 204. The concave opening 2041 includes a channel that is recessed inward from the outlet, and an anti-drip fine hole 20411 is provided at the end of the channel.

[0080] The concave opening 2041 is connected to the drip storage channel 2042 through the anti-drip fine hole 20411, and the drip storage channel 2042 extends to the liquid inlet end;

[0081] When this application is implemented, compared with the original structure, the liquid will drip out when the bottle is inverted and the bottle body is not squeezed. The concave opening 2041 and the liquid storage channel 2042 of this application effectively avoid the above problem. After applying force to the bottle body structure, the bottle body will deform and the liquid can drip out.

[0082] Specifically, in one embodiment of this application, the length of the droplet column 204 is greater than 2 mm; the diameter of the anti-drip micro-orifice 20411 is less than 2 mm; and the width and length of the cross-section of the anti-drip micro-orifice 20411 perpendicular to the liquid flow direction are both less than 2 mm.

[0083] Specifically, in one embodiment of this application, the diameter of the anti-drip fine orifice 20411 is 0.15-0.4 times the diameter of the flow channel orifice at the outlet end of the drip column head 204; the diameter of the anti-drip fine orifice 20411 is 0.19-0.2 times the diameter of the flow channel orifice at the outlet end of the drip column head 204; the concave opening 2041 is composed of a drip bell mouth, a uniform flow channel, and a gradually narrowing flow channel connected in sequence.

[0084] Specifically, in one embodiment of this application, the dripping funnel is formed by a smooth edge of the outlet end of a uniform flow channel, the uniform flow channel being a straight circular channel, and the gradually narrowing flow channel being a circular channel with a gradually decreasing cross-sectional area.

[0085] The lower sealing part is provided with an annular groove, which is used to seal the connection container;

[0086] The inner walls on both sides of the groove are respectively provided with a snap ring 205 and a sealing groove 206. The sealing groove 206 is used to cooperate with the inner wall of the container opening to form a seal and prevent leakage.

[0087] The snap ring 205 is used to form an anti-detachment connection with the outer wall of the container opening, and it fits with the container or bottle body to prevent the inner plug structure from falling off;

[0088] Specifically, in one embodiment of this application, the outer surface of the outer sealing part is provided with a three-headed external thread 201. The three-headed thread structure is used to connect the outer cover and ensure the seal between the outer cover and the inner plug.

[0089] The outer surface of the inner sealing part is provided with anti-rotation teeth 202, which facilitate mold forming.

[0090] An anti-rotation block 203 is provided on the outer end face of the liquid inlet end of the dripping temporary storage channel 2042. The anti-rotation block facilitates production and assembly. A reinforcing rib 2043 is provided on the outer surface of the dripping channel. The reinforcing rib 2043 is used to connect the outer sealing part and / or the inner sealing part. The reinforcing rib is used to improve the strength of the entire product.

[0091] Specifically, in one embodiment of this application, such as Figure 7-14The maximum flow cross-sectional radius of the liquid inlet end of the drip storage channel is 2-4 times the flow cross-sectional radius of the uniform flow channel of the concave opening. This setting is conducive to controlling the liquid through flow guidance and adapting to the squeezing and extrusion volume generated by pressing the bottle through the flow ratio of the two, so as to form precise droplets.

[0092] Specifically, in one embodiment of this application, the maximum flow cross-sectional radius of the liquid inlet end of the drip storage channel is three times the flow cross-sectional radius of the uniform flow channel of the concave opening, as described in this application. Figure 7-14 The ratio is optimal and suitable for production and drip control.

[0093] Specifically, in one embodiment of this application, the flow cross-section of the liquid inlet end of the dripping temporary storage channel remains unchanged or gradually decreases towards the anti-drip fine hole, which is beneficial to manufacturing. This is because the channel area of ​​the dripping temporary storage channel is larger than the flow cross-section of the concave opening. Therefore, during manufacturing, the dripping temporary storage channel is also gradually reduced to facilitate structural connection.

[0094] Specifically, in one embodiment of this application, the drip storage channel is wrapped around the concave opening, and the gap between the channel and the outer wall of the concave opening is provided to facilitate manufacturing and save injection molding materials;

[0095] like Figure 13 Near the anti-drip fine hole of the inner concave opening, a sealing connection is provided between the outer wall of the inner concave opening and the end face where the anti-drip fine hole is located in the drip storage channel, so that the gap between the drip storage channel and the outer wall of the inner concave opening is a sealed cavity, preventing the medicine from entering. If the medicine enters, it will enter the dead corner and cannot be used.

[0096] Specifically, in one embodiment of this application, such as Figure 14 The drip storage channel is located near the anti-drip fine hole of the concave opening. The end of the drip storage channel connects to the end face of the anti-drip fine hole, which is the terminal end of the drip storage channel.

[0097] Specifically, in one embodiment of this application, such as Figure 1-6 A dropper bottle, the container being a bottle body 300 and the outer protective cover being an outer cap 100;

[0098] The inner wall of the outer cover 100 is provided with a three-start internal thread 101, which is used to match the three-start external thread 201 of the inner plug 200;

[0099] A sealing post 1041 is provided at the inner top of the outer cover 100, which is used to insert into the inner recess 2041 of the drip column head 204 to form a seal and prevent leakage.

[0100] At the opening of the inner plug 200 of the bottle body 300, there are protrusions and recesses, and matching fastening rings 205 and sealing grooves 206.

[0101] The recessed opening 2041 and the temporary storage channel 2042 of the dripping channel in this application require force to be applied to the bottle body before the bottle body can be deformed and the liquid can drip out.

[0102] In summary, this utility model aims to solve the problem of liquid dripping when the liquid is inverted and spraying out in a straight line when pressed in existing dropper bottles. It provides a solution that can precisely control the dripping dosage, control the dripping flow rate and velocity, and whose entire top structure is conducive to mold processing. The inner stopper and dropper bottle can effectively control the dripping dosage. This innovative product is formed by adjusting the dripping channel at the top.

[0103] This application utilizes an inwardly recessed channel at the outlet to create a dripping trend that slows down the squeezing process, avoiding straight dripping. Anti-drip micropores effectively control the flow channel formed by squeezing, allowing the kinetic energy of the squeezed liquid to be absorbed by the rapidly expanding concave opening. By utilizing the concave opening and drip storage channel, force needs to be applied to the bottle structure before the bottle deforms and the liquid can drip out, achieving precise control of the dripping dosage, flow rate, and velocity, with a control accuracy within 10%. This improves the stability of the extruded dosage and prevents leakage when inverted.

[0104] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A stopper for a dropper bottle, the stopper (200) comprising a dropper channel, an outer sealing portion, and an inner sealing portion; The inner sealing part is located below the outer sealing part. The outer sealing part is used to connect to the outer protective cover, and the inner sealing part is used to seal the connected container. The dripping channel is located inside the outer sealing part, and the outlet end of the dripping channel extends out of the outer sealing part to form a dripping column head (204). The inlet end of the dripping channel extends out of the inner sealing part for insertion into and communication with the container. Its characteristic is that... The drip channel includes an indentation (2041) and a drip storage channel (2042); The concave opening (2041) is provided at the outlet end of the droplet column head (204). The concave opening (2041) includes a channel that is recessed inward from the outlet, and an anti-drip pore (20411) is provided at the end of the channel. The concave opening (2041) is connected to the drip storage channel (2042) through the anti-drip fine hole (20411), and the drip storage channel (2042) extends to the liquid inlet end.

2. A dropper bottle closure as defined in claim 1, wherein, The length of the droplet column (204) is greater than 2 mm; the diameter of the anti-drip orifice (20411) is less than 2 mm, or the width and length of the cross section of the anti-drip orifice (20411) perpendicular to the liquid flow direction are both less than 2 mm.

3. A dropper bottle closure as defined in claim 2, wherein, The diameter of the anti-drip fine orifice (20411) is 0.15-0.4 times the diameter of the flow channel orifice at the outlet end of the droplet column head (204).

4. A dropper bottle closure as defined in claim 1, wherein, The diameter of the anti-drip fine orifice (20411) is 0.19-0.2 times the diameter of the flow channel orifice at the outlet end of the droplet column head (204).

5. A dropper bottle closure as defined in claim 1, wherein, The concave opening (2041) is composed of a dripping funnel-shaped opening, a uniform flow channel, and a gradually narrowing flow channel connected in sequence.

6. A dropper bottle closure as defined in claim 5, wherein, The drip nozzle is formed by a smooth edge at the outlet end of a uniform flow channel, which is a straight circular channel, and the gradually narrowing flow channel is a circular channel with a gradually decreasing cross-sectional area.

7. A dropper bottle closure as defined in claim 1, wherein The lower sealing part is provided with an annular groove, which is used to seal the connection container; The inner walls on both sides of the groove are respectively provided with a snap ring (205) and a sealing groove (206). The sealing groove (206) is used to form a seal with the inner wall of the container opening, and the snap ring (205) is used to form an anti-detachment connection with the outer wall of the container opening.

8. A dropper bottle closure as defined in claim 1, wherein, The outer surface of the outer sealing part is provided with a three-headed external thread (201); the outer surface of the inner sealing part is provided with an anti-rotation tooth (202); and the outer end face of the liquid inlet end of the dripping temporary storage channel (2042) is provided with an anti-rotation block (203).

9. A dropper bottle closure as defined in claim 1, wherein, The outer surface of the drip channel is provided with reinforcing ribs (2043), which are used to connect the outer sealing part and / or the inner sealing part.

10. A dispensing bottle characterized by The dropper bottle includes the inner stopper as described in any one of claims 1-9, the container is a bottle body (300), and the outer protective cover is an outer cap (100); The inner wall of the outer cover (100) is provided with a three-start internal thread (101) for matching the three-start external thread (201) of the inner plug (200); A sealing post (1041) is provided at the inner top of the outer cover (100) for inserting into the inner recess (2041) of the dropper head (204) to form a seal; The opening of the inner plug (200) of the bottle body (300) is provided with a protrusion and a recess, and is equipped with a fastening ring (205) and a sealing groove (206).

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