Refillable spray head

Abstract

The refillable spray head is characterized in that it comprises a spray head unit. A refill base (10) is detachably attached below the spray head unit. This refill base (10) has a continuous liquid channel (9) and a vent channel (15). A downward-facing liquid tube (11) is attached to the liquid channel (9), while a downward-facing vent tube (12) is attached to the vent channel (15). The liquid channel (9) is connected to the inner channel of the spray head unit. A seal is located between the spray head unit and the refill base (10), which completely seals the vent channel (15) when the spray head unit is mounted onto the refill base (10).

Description

Technical area

[0001] This invention relates to the technical field of liquid spray heads, in particular to a refillable spray head. Background technology

[0002] Container bottles refer to bottle containers used to hold water, lotions, emulsions, perfumes, and other liquids. For user-friendly use, such bottles are equipped with components such as emulsion pumps or caps on the bottle neck to facilitate the dispensing of the liquid. Taking a perfume bottle as an example, by pressing the cap on the bottle neck, the perfume can be sprayed in the form of a fine mist. To facilitate the refilling of liquids such as perfume after they have been used up, existing technology often adds an additional refill valve to the bottom of the bottle or to the side wall of the bottle body. The liquid can be introduced into the bottle through this refill valve, ensuring the reusability of the bottle body.

[0003] For example, Chinese Patent Application No. 201310148551.8 discloses a refillable spray bottle, and Chinese Utility Model Patent Application No. 201320246540.9 discloses a detachable and refillable spray bottle that allows for reusability of the bottle body. However, the above-mentioned solution, as well as the refillable spray heads used in existing technology, requires a custom-made bottle structure due to the attachment of a refill valve to the bottle bottom or side wall of the bottle body. If the refill valve has dimensional deviations or a poor fit, leakage may occur, reducing interchangeability and compatibility and making disassembly, cleaning, and assembly complex and inconvenient. Subject of the invention

[0004] The present invention proposes a refillable spray head to solve the problems of existing refillable spray head solutions mentioned in the above background art, which require a custom-made bottle structure, may result in leakage, have low interchangeability and poor compatibility, and have a complex disassembly, cleaning, and assembly process.

[0005] The technical solution of the present invention is implemented as follows: It comprises a spray head unit. A refill base is detachably mounted below the spray head unit. This refill base has a continuous fluid channel and a vent channel. A downward-running fluid tube is attached to the fluid channel, while a downward-running vent tube is attached to the vent channel. The fluid channel is connected to the internal channel of the spray head unit. A sealing element is located between the spray head unit and the refill base, which completely seals the vent channel when the spray head unit is mounted on the refill base.

[0006] It is preferred that the refill base is detachably connected to a bottle body, wherein the liquid tube and the vent tube both extend downwards into the inner position of the bottle body.

[0007] It is preferred that the vent pipe extends into the interior of the bottle body to near the bottle neck, the center of the bottle body or the bottle bottom.

[0008] It is preferred that the liquid channel is arranged in the center position of the refill base.

[0009] It is preferred that the sealing element comprises a first sealing ring mounted below the spray head unit, the downward projection of which can cover the vent channel. After the spray head unit is connected to the refill base, the first sealing ring is compressed to seal the vent channel. It is preferred that the sealing element further comprises a second sealing ring mounted above the liquid channel of the refill base. After the spray head unit is connected to the refill base, the spray head unit will compress the second sealing ring so that the liquid channel is connected to the internal channel of the spray head unit and the connection remains tight.

[0010] Preferably, the spray head unit comprises a housing whose inner center position is provided with an inner sleeve. The housing is removably connected to the refill base. Below the inner sleeve is a downwardly projecting first projection, with the first sealing ring mounted outside the first projection. Below the first projection is a downwardly projecting second projection, the lower end surface of which bears against the second sealing ring.

[0011] The advantageous effects of the present invention adopting the above-mentioned technical solution are as follows: The refillable spray head provided by this invention is suitable for any refill bottles, spray bottles, perfume bottles, liquid bottles, and other containers with bottle necks. Assembly is achieved simply by attaching the spray head to the neck of the bottle body, allowing for easy disassembly and assembly. Furthermore, no specially designed bottle structure is required to realize the filling process. The spray head is characterized by high interchangeability and compatibility, high stability, and leak-preventing properties. Description of the drawing

[0012] In order to more clearly illustrate the technical solutions used in the embodiments of the present invention or in the existing technology, a brief introduction to the drawings necessary to describe the embodiments or the existing technology is provided below. Obviously, the drawings described below are only some embodiments of the present invention. It is possible for those skilled in the art to derive other drawings based on these drawings without resorting to inventive activity. Fig. : Perspective view of the present invention Fig. : Sectional view of the present invention Fig. : Partially enlarged detailed view of Fig. of the present invention Fig. :Perspective view of the inner sleeve of the present invention Including:

[0013] 1. Button; 2. Nozzle; 3. First spring; 4. Valve needle; 5. Inner sleeve; 501. First projection; 502. Second projection; 6. Housing; 7. Second spring; 8. First sealing ring; 9. Liquid passage; 10. Refill base; 11. Liquid tube; 12. Vent tube; 13. Bottle body; 14. Second sealing ring; 15. Vent passage; 16. Piston. Detailed execution

[0014] The technical solution of the present invention will be described clearly and completely below with reference to the accompanying drawings of the embodiments of the invention. Obviously, the described embodiments represent only a portion of the embodiments of the present invention and not all embodiments. All other embodiments that can be derived by those skilled in the art without the use of inventive activity based on the embodiments of the present invention also fall within the scope of the present invention.

[0015] As shown in the figure, the refillable spray head comprises a spray head unit, the lower part of which is detachably connected to a refill base 10. The internal functional structure of the spray head unit corresponds to the conventional arrangements known in the existing art, wherein the liquid is dispensed from the bottle body 13 by pressing outward. The liquid can be an emulsified or non-emulsified liquid, and the dispensing method can be either in the form of a spray or another form. The spray head unit comprises a housing 6, in the inner center position of which an inner sleeve 5 is installed. The inner sleeve 5 is snapped into the center of the housing 6. The difference is that the housing 6 is detachably connected to the refill base 10. In this example, the connection between the housing 6 and the refill base 10 is made by the screw connection.However, other detachable connection methods may also be used without being specified here. Below the inner sleeve 5 is a downwardly projecting first projection 501, and below the first projection 501 is a downwardly projecting second projection 502.

[0016] Specifically, in this example, the spray head unit also includes a piston 16 installed in the center of the inner sleeve 5. The piston 16 is tightly and slidably connected to the inner sleeve 5. Inside the piston 16 is a valve needle 4 with a cross-sectional shape corresponding to an inverted T. The second spring 7 is installed between the bottom of the valve needle 4 and the inside of the bottom of the inner sleeve 5. In the upper position of the piston 16, a nozzle 2 is mounted externally on the valve needle 4. On the outside of the nozzle 2 is the first spring 3. A button 1 is mounted above the nozzle 2 and is axially synchronously connected to the nozzle 2. When the button 1 is pressed, it moves the nozzle 2, the valve needle 4, and the piston 16 downward and compresses the second spring 7, thereby reducing the volume of the space between the piston 16 and the inner sleeve 5.When the button 1 is released, the nozzle 2, the valve needle 4, and the piston 16 move upward under the elastic pressure of the second spring 7, whereby the volume between the piston 16 and the inner sleeve 5 increases, the pressure decreases, and the liquid is supplied from the bottle body 13 via the liquid tube 11 into the space between the piston 16 and the inner sleeve 5. When the button 1 is further pressed, the volume between the piston 16 and the inner sleeve 5 further decreases, and the liquid flows upward through the gap between the valve needle 4 and the piston 16 and is finally discharged to the outside through the inner channel of the button 1, thus completing the entire liquid discharge process.

[0017] The refill base 10 has a continuous liquid channel 9 and a vent channel 15. A downward-extending liquid tube 11 is attached to the liquid channel 9, while a downward-extending vent tube 12 is attached to the vent channel 15. The liquid channel 9 is connected to the inner channel of the spray head unit. A sealing element is located between the spray head unit and the refill base 10, which completely seals the vent channel 15 when the spray head unit is mounted on the refill base 10. The sealing element includes the first sealing ring 8 mounted below the spray head unit, which is specifically attached to the outer edge of the first projection 501. The first sealing ring 8 has a downward projection that can cover the vent channel 15. After the spray head unit is connected to the refill base 10, the first sealing ring 8 is compressed to seal the vent channel 15.As a result, the vent channel 15 remains closed during normal use of the container, preventing the occurrence of leaks.

[0018] The sealing element further includes a second sealing ring 14 mounted above the fluid channel 9 of the refill base 10. After the spray head unit is connected to the refill base 10, the spray head unit will compress the second sealing ring 14, so that the fluid channel 9 is connected to the internal channel of the spray head unit, and the connection remains tight. Specifically, the lower end surface of the downwardly projecting second protrusion 502 of the inner sleeve 5 can abut the top surface of the first sealing ring 8 and compress the first sealing ring 8, thereby sealing the fluid channel 9 of the refill base 10 at the connection point when connected to the internal channel of the spray head unit, preventing leakage. Specifically, the refill base 10 is detachably connected to the bottle body 13 at the bottom.The connection between the refill base 10 and the bottle body 13 can be achieved by methods such as lock housing, gear grip connection, pincer pressing, bracket, screw connection, etc., so that the refill base 10 is securely connected when attached to the bottle body 13 and the connection point is sealed, preventing the occurrence of leaks. The liquid tube 11 and the vent tube 12 both extend into the interior of the bottle body 13. Specifically, the vent tube 12 extends into the interior of the bottle body 13 and reaches near the bottle neck, the center of the bottle body 13, or the bottle bottom. This arrangement is designed to accommodate various filling methods. When the vent tube 12 reaches the bottle bottom, the bottle body 13 can be turned over for filling with another perfume bottle.When the end of the vent tube 12 is positioned near the bottle neck or the bottle body 13, the bottle body 13 remains upright and filling is done with a syringe.

[0019] In this example, the fluid channel 9 is located along the central axis of the refill base 10 and primarily serves to align with the centrally positioned channel of the spray head unit. If the inner channel of the spray head unit is not centered, the fluid channel 9 cannot be positioned in the center of the refill base 10 either.

[0020] Working principle: This refillable spray head is connected to the spray head unit at the top and to the bottle body 13 at the bottom during use. When the button 1 of the spray head unit is pressed, the liquid in the bottle body 13 can flow upward through the liquid tube 11 and finally be discharged to the outside through the internal channel of the spray head unit. During this process, the vent channel 15 remains closed to prevent liquid leakage. When the liquid needs to be refilled, the spray head unit can be removed, and the liquid can be refilled either with another container through the opening of the liquid channel 9 or using a syringe. During the refilling process, the air in the bottle body 13 can escape through the vent channel 15, thereby preventing excessive internal pressure from making liquid refilling difficult.

[0021] The above description merely represents preferred embodiments of the present invention and is not intended to limit the present invention. Any modifications, equivalents, or improvements within the spirit and principles of this invention are intended to be within the scope of this invention. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] CN 201310148551. 8

[0003] CN 201320246540. 9

[0003]

Claims

[1] The refillable spray head, characterized by that it comprises a spray head unit. A refill base (10) is removably attached below the spray head unit. This refill base (10) has a continuous liquid channel (9) and a vent channel (15). A downward liquid tube (11) is attached to the liquid channel (9), while a downward vent tube (12) is attached to the vent channel (15). The liquid channel (9) is connected to the inner channel of the spray head unit. There is a seal between the spray head unit and the refill base (10) which completely seals the vent channel (15) when the spray head unit is mounted on the refill base (10). [2] The refillable spray head according to claim 1, characterized bythat the refill base (10) is detachably connected to a bottle body (13), wherein the liquid tube (11) and the vent tube (12) both extend downwards into the inner position of the bottle body (13). [3] The refillable spray head according to claim 2, characterized by that the vent pipe (12) extends into the interior of the bottle body (13) up to the vicinity of the bottle neck, the center of the bottle body (13) or the bottle bottom. [4] The refillable spray head according to claim 1, characterized by that the liquid channel (9) is arranged in the center position of the refill base (10). [5] The refillable spray head according to claim 1, characterized bythat the sealing element comprises a first sealing ring (8) mounted below the spray head unit, the downward projection of which can cover the vent channel (15). After the spray head unit is connected to the refill base (10), the sealing ring (8) is compressed to seal the vent channel (15). [6] The refillable spray head according to claim 5, characterized by that the sealing element further comprises a second sealing ring (14) mounted above the fluid channel (9) of the refill base (10). After the spray head unit is connected to the refill base (10), the spray head unit will compress the second sealing ring (14) so that the fluid channel (9) is connected to the inner channel of the spray head unit and the connection remains tight. [7] The refillable spray head according to claim 6, characterized byin that the spray head unit comprises a housing (6), the inner center position of which is equipped with an inner sleeve (5). The housing (6) is removably connected to the refill base (10). Below the inner sleeve (5) there is a downwardly projecting first projection (501), with the first sealing ring (8) being mounted outside the first projection (501). Below the first projection (501) there is a downwardly projecting second projection (502), the lower end surface of which bears against the second sealing ring (14).

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