Variable dose spray assembly and spray device
By designing a variable-dose spray assembly in the spray device and switching the guide channels of the guide section and the dose adjustment component, the internal space of the spray pump can be changed, which solves the shortcomings of fixed-dose spray devices, improves the accuracy and convenience of medication, and reduces costs and environmental pressure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHENZHEN BONA MEDICINAL PACKAGING MATERIAL CO LTD
- Filing Date
- 2026-04-03
- Publication Date
- 2026-05-26
Smart Images
Figure CN122075845A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of medical device technology, and in particular to a variable dose spray assembly and spray device. Background Technology
[0002] Traditional nebulizers can only dispense a fixed dose of medication, failing to meet the diverse needs of different users and scenarios. For example, adults, children, and the elderly require different dosages; different stages of treatment (prevention, treatment, maintenance) also require different dosages; and different application sites (nasal cavity, oral cavity, skin) also require different dosages. Furthermore, rapid dosage adjustments are necessary when combining medications or switching between acute and stable phases of the illness. Traditional single-dose nebulizers cannot handle these challenges. They also suffer from the problem of either dispensing the full dose or not dispensing at all, making precise dosage control difficult and potentially leading to over- or under-dosing, affecting treatment efficacy and posing safety risks. Additionally, traditional single-dose nebulizers only provide one dosage, requiring patients to carry multiple nebulizers with different dosages, which is inconvenient and increases the burden of medication use. From a manufacturing perspective, producing and transporting nebulizers with different dosages separately increases production costs and generates more packaging waste, failing to meet environmental protection requirements. With the continuous advancement of medical technology, the requirements for the accuracy, safety, and convenience of medication administration are becoming increasingly stringent. Traditional spray pumps can no longer meet these demands. Therefore, there is an urgent need to develop a spray pump that can switch between two dosages to solve these problems. Summary of the Invention
[0003] Embodiments of the present invention provide a variable dose spray assembly and spray device, which aims to solve the problem that existing spray devices can only provide a single dose and cannot meet the needs of differentiated doses.
[0004] In a first aspect, the present invention provides a variable-dose spray assembly, comprising: A nozzle is used to spray out liquid medicine. The end of the nozzle away from the direction of liquid medicine spraying is provided with a connecting part that is enclosed. A guide part is provided on the side wall of the connecting part. A spray pump, coaxially arranged with the nozzle, compresses its internal space as the nozzle is pressed axially to pump the liquid medicine into the nozzle. A dose adjustment component is formed therein, the dose adjustment component is sleeved with the connecting part, and a first dose guiding channel and a second dose guiding channel are provided between the side wall of the dose adjustment component and the side wall of the connecting part, which are arranged along the axial direction of the spray pump. The guiding part can be switched to be connected to the first dose guiding channel and the second dose guiding channel respectively and can move along the first dose guiding channel and the second dose guiding channel respectively. Wherein, the travel distance of the guide portion along the first dose guiding channel is greater than the travel distance along the second dose guiding channel.
[0005] Furthermore, a switching channel is provided between the sidewall of the dose adjustment component and the sidewall of the connecting part, which is arranged circumferentially along the nozzle. The switching channel is connected to the first dose guide channel and the second dose guide channel respectively. The guide part can move along the switching channel as the nozzle rotates to switch to the first dose guide channel and the second dose guide channel.
[0006] Furthermore, the first dose guiding channel includes a pair of radially symmetrical first guide grooves formed on the inner wall of the connecting portion, the pair of first guide grooves extending axially from the top of the connecting portion to the bottom of the connecting portion; the second dose guiding channel includes a pair of radially symmetrical second guide grooves formed on the inner wall of the connecting portion, the pair of second guide grooves extending axially from a position below the top of the connecting portion to the bottom of the connecting portion.
[0007] Furthermore, the switching channel includes a pair of spiral guide grooves extending circumferentially along the inner wall of the connecting portion; one of the spiral guide grooves has its two ends connected to one of the first guide grooves and one of the second guide grooves respectively; and the other spiral guide groove has its two ends connected to another of the first guide grooves and another of the second guide grooves respectively.
[0008] Furthermore, one end of the spiral guide groove is connected to the top of the first guide groove, and the other end is connected to the top of the second guide groove. One end of the spiral guide groove is higher than the other end of the spiral guide groove. The top of the first guide groove and / or the second guide groove is also provided with a locking part, and the guide part elastically abuts against the locking part under the elastic force of the spray pump.
[0009] Furthermore, the spiral guide groove extends at an angle of 90° in the circumferential direction of the connection part, so that the nozzle can complete the dose switching within a 90° rotation range.
[0010] Furthermore, the guide portion includes a pair of guide posts that are radially symmetrical along the connecting portion, the guide posts protruding radially outward from the outer wall of the connecting portion; when the guide portion is switched to connect with the first dose guiding channel, the pair of guide posts are respectively connected to the pair of first guide grooves; when the guide portion is switched to connect with the second dose guiding channel, the pair of guide posts are respectively connected to the pair of second guide grooves; when the guide portion is switched to connect with the switching channel, the pair of guide posts are respectively connected to the pair of spiral guide grooves.
[0011] Furthermore, the variable dose spray assembly also includes a cap, which is fixedly connected to the spray pump and the dose adjustment component respectively. The cap is axially through the spray pump, the dose adjustment component is fixedly connected to the top of the cap, and the spray pump is fixedly connected to the cap and passes through the cap and the dose adjustment component.
[0012] Furthermore, the sidewall of the dose adjustment component is transparent, and a first dose mark and a second dose mark are provided on the sidewall of the dose adjustment component. The first dose mark is adjacent to the first dose guiding channel, and the second dose mark is adjacent to the second dose guiding channel.
[0013] Secondly, the present invention also provides a spraying device, including the above-described variable dose spraying assembly.
[0014] This invention provides a variable-dose spray assembly and spray device. By providing a guide portion on the nozzle's connection and a first and second dose-guiding channel extending axially along the spray pump on the dose adjustment component, the guide portion can be switched between connecting to and moving along either the first or second dose-guiding channel. Since the guide portion's travel distance along the first dose-guiding channel is greater than its travel distance along the second dose-guiding channel, when the guide portion is located in the first dose-guiding channel, the nozzle can be pressed for a larger distance, resulting in a larger compressible internal space for the spray pump, thus pumping more medication. When the guide portion is located in the second dose-guiding channel, the nozzle can be pressed for a smaller distance, resulting in a smaller compressible internal space for the spray pump, thus pumping less medication. This allows for flexible switching between two doses using a single device, meeting the differentiated dosage needs of different populations, different disease stages, and different medication scenarios, thereby improving the accuracy and convenience of medication administration. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 A schematic diagram of a variable-dose spray assembly according to an embodiment of the present invention is shown; Figure 2 An exploded schematic diagram of the variable-dose spray assembly according to an embodiment of the present invention is shown; Figure 3 A cross-sectional schematic diagram of a variable-dose spray assembly according to an embodiment of the present invention is shown; Figure 4 Another cross-sectional schematic diagram of the variable dose spray assembly according to an embodiment of the present invention is shown; Figure 5 A schematic diagram of the dosage adjustment element of the variable dosage spray assembly according to an embodiment of the present invention is shown; Figure 6 A schematic diagram of a transparent dose adjustment element of a variable dose spray assembly according to an embodiment of the present invention is shown; Figure 7 A schematic diagram of the nozzle of the variable dose spray assembly according to an embodiment of the present invention is shown; Figure 8 A schematic diagram of the cap of the variable-dose spray assembly according to an embodiment of the present invention is shown; Figure label: 1. Nozzle; 11. Connecting part; 12. Guide part; 2. Spray pump; 3. Dosage adjustment component; 31. First dose guiding channel; 32. Second dose guiding channel; 33. Switching channel; 34. Locking part; 35. Fixing groove; 36. First dose mark; 37. Second dose mark; 4. Bottle cap; 41. Fixing bone position; 42. Clearance groove. Detailed Implementation
[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0018] The directional terms used in this invention, such as "up," "down," "front," "back," "left," "right," "inner," "outer," and "side," are merely for reference to the accompanying drawings. Therefore, the directional terms used are for illustrating and understanding this invention, and not for limiting it. Furthermore, in the drawings, structures that are similar or identical are indicated by the same reference numerals.
[0019] In fields such as pharmaceutical delivery and daily care, spray devices are widely used due to their convenience and uniform drug delivery. However, existing spray devices generally adopt a single-dose structure design, which can only output a fixed dose of liquid medicine. They cannot flexibly adjust the dosage according to the actual needs of different user groups, application sites, and disease stages. They are difficult to adapt to the dosage differences between adults, children, and the elderly, and cannot meet the differentiated dosage requirements in different scenarios such as prevention, treatment, and disease maintenance. The single-dose design defect greatly limits the applicability and flexibility of spray devices, which has become a key problem that urgently needs to be solved in the practical application of spray devices.
[0020] To address this, embodiments of the present invention provide a variable-dose spray assembly and spray device. By switching between the guide section and different dose guide channels, two different doses of liquid medicine can be pumped, thereby specifically solving the problem that existing spray devices can only provide a single dose and cannot meet the differentiated dose requirements. Ultimately, the variable-dose spray assembly can flexibly switch the dosage and accurately adapt to the differentiated dose requirements of different usage scenarios and populations.
[0021] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.
[0022] Please see Figures 1-8 This invention provides a spraying device, including a variable dose spray assembly and a bottle (not shown in the figure). The variable dose spray assembly includes a nozzle 1, a spray pump 2, and a dose adjustment component 3.
[0023] The bottle is used to store the liquid medicine. The bottle has an opening, and the variable dose spray assembly is installed at the opening of the bottle. The bottle and the cap 4 of the variable dose spray assembly can be fixedly connected by means of threaded connection, snap connection or interference fit. The bottle can be made of glass, plastic or other materials suitable for storing liquid medicine. The shape of the bottle can be cylindrical, square or other shapes suitable for holding. The capacity of the bottle can be designed according to actual needs, such as 10ml, 15ml, 20ml, etc., and is not limited here.
[0024] The nozzle 1 is used to spray out the liquid medicine. The end of the nozzle 1 away from the direction of liquid medicine spraying is provided with a connecting part 11. The connecting part 11 has a cylindrical structure. The side wall of the connecting part 11 is provided with a guide part 12. The guide part 12 can be formed by radially protruding outward from the outer wall of the connecting part 11. The guide part 12 can be a pair of symmetrically arranged guide columns or other shaped protrusion structures. The top of the nozzle 1 is provided with a nozzle. The nozzle is connected to the outlet of the spray pump 2. When the spray pump 2 is compressed, the liquid medicine is sprayed out in the form of atomization through the nozzle. The nozzle 1 is coaxially arranged with the spray pump 2. The nozzle 1 can rotate and move axially relative to the dosage adjustment component 3.
[0025] The spray pump 2 is coaxially arranged with the nozzle 1. The spray pump 2 compresses its internal space as the nozzle 1 is axially pressed to pump the liquid medicine into the nozzle 1. The spray pump 2 includes a pump body, a piston, a spring, and a suction tube. A metering chamber is formed inside the pump body. The piston is slidably disposed within the pump body, and the spring is located between the piston and the pump body to provide a restoring force. The suction tube is connected to the bottom of the pump body and extends into the liquid medicine in the bottle. When the nozzle 1 is pressed, the piston moves downward, compressing the liquid medicine in the metering chamber, causing the liquid medicine to be sprayed out through the nozzle 1. When the nozzle 1 is released, the spring pushes the piston back to its original position, creating a negative pressure in the metering chamber, drawing the liquid medicine from the bottle into the metering chamber through the suction tube. It is understood that the structure of the spray pump 2 is well known to those skilled in the art, such as the structures of the spray pump 2 in CN202223693U and CN120790399A. Regardless of the structural form of the spray pump 2, as long as it can pump the liquid medicine, it is acceptable; therefore, no limitation is made, and further details will not be provided.
[0026] The dosage adjustment component 3 is enclosed and has a cylindrical structure. The dosage adjustment component 3 is sleeved with the connecting part 11. A first dosage guide channel 31 and a second dosage guide channel 32 are provided between the side wall of the dosage adjustment component 3 and the side wall of the connecting part 11, which are arranged along the axial direction of the spray pump 2. The first dosage guide channel 31 and the second dosage guide channel 32 can be opened on the inner wall of the dosage adjustment component 3 or on the outer wall of the connecting part 11. The extension length of the first dosage guide channel 31 along the axial direction of the spray pump 2 is greater than the extension length of the second dosage guide channel 32 along the axial direction of the spray pump 2. The guide part 12 can be switched to connect with the first dosage guide channel 31 and the second dosage guide channel 32 respectively and move along the first dosage guide channel 31 and the second dosage guide channel 32 respectively. The dosage adjustment component 3 can also be provided with a switching channel 33, which is arranged circumferentially along the nozzle 1. The switching channel 33 connects the first dosage guide channel 31 and the second dosage guide channel 32 respectively. The guide part 12 can move along the switching channel 33 as the nozzle 1 rotates to switch between the first dosage guide channel 31 and the second dosage guide channel 32.
[0027] The dosage adjustment component 3 is enclosed and has a cylindrical structure. The dosage adjustment component 3 is sleeved with the connecting part 11. A first dosage guide channel 31 and a second dosage guide channel 32 are provided between the side wall of the dosage adjustment component 3 and the side wall of the connecting part 11, which are arranged along the axial direction of the spray pump 2. The first dosage guide channel 31 and the second dosage guide channel 32 can be opened on the inner wall of the dosage adjustment component 3 or on the outer wall of the connecting part 11. The extension length of the first dosage guide channel 31 along the axial direction of the spray pump 2 is greater than the extension length of the second dosage guide channel 32 along the axial direction of the spray pump 2. The guide part 12 can be switched to connect with the first dosage guide channel 31 and the second dosage guide channel 32 respectively and move along the first dosage guide channel 31 and the second dosage guide channel 32 respectively. The dosage adjustment component 3 can also be provided with a switching channel 33, which is arranged circumferentially along the nozzle 1. The switching channel 33 connects the first dosage guide channel 31 and the second dosage guide channel 32 respectively. The guide part 12 can move along the switching channel 33 as the nozzle 1 rotates to switch between the first dosage guide channel 31 and the second dosage guide channel 32. The top of the first dose guiding channel 31 and the second dose guiding channel 32 is provided with a locking part 34. The locking part 34 has a groove-shaped structure. When the guide part 12 moves to the position of the locking part 34, the guide part 12 elastically abuts against the locking part 34 under the upward elastic force of the spray pump 2, that is, it is stuck into the groove, generating a certain damping feeling, so that the guide part 12 is positioned at this position, thereby preventing the guide part 12 from being accidentally displaced due to vibration or accidental touch, and at the same time providing the user with obvious tactile feedback to indicate that the dose has been switched to the correct position.
[0028] The working process and principle of this embodiment are as follows: When it is necessary to switch the dosage, a circumferential rotational force is applied to the nozzle 1. The nozzle 1 drives its connecting part 11 and the guide part 12 on the outer wall of the connecting part 11 to rotate circumferentially simultaneously, so that the guide part 12 disengages from one of the currently matched dosage guide channels and switches to be embedded in another dosage guide channel, completing the selection and locking of the dosage level; after selecting the corresponding dosage level, a pressing force is applied to the nozzle 1 along the axial direction of the spray pump 2. The nozzle 1 drives the guide part 12 to move axially along the currently matched dosage guide channel. Since the movement stroke of the guide part 12 along the first dosage guide channel 31 is greater than the movement stroke along the second dosage guide channel 32, the movement stroke of the guide part 12 directly limits the axial pressing stroke of the nozzle 1, thereby causing the internal space of the spray pump 2 to be compressed differently with the pressing of the nozzle 1, and the guide part 12 to move axially. When the guide part 12 is located in the first dose guiding channel 31, the internal space of the spray pump 2 is larger, and the amount of liquid medicine pumped is greater. When the guide part 12 is located in the second dose guiding channel 32, the internal space of the spray pump 2 is smaller, and the amount of liquid medicine pumped is less. After the pressing action is completed and the liquid medicine is sprayed out from the atomizing nozzle of the nozzle 1, the pressing force on the nozzle 1 is removed. The reset elastic structure inside the spray pump 2 drives the internal components of the spray pump 2 to reset. At the same time, the nozzle 1 and the guide part 12 move upward along the current dose guiding channel axis to return to the initial position. At this time, according to the actual medication needs, the nozzle 1 can be rotated circumferentially again to switch the dose level, or the nozzle 1 can be pressed again to complete the next liquid medicine pumping. Through the switching and coordination of the guide part 12 with different dose guiding channels and the stroke limitation, the flexible and precise pumping of two different dose liquid medicines can be achieved.
[0029] As stated above, with reference to Figures 1-4 This invention provides a variable dosage spray assembly, comprising: a nozzle 1, a spray pump 2, and a dosage adjustment component 3. The nozzle 1 is used to spray a liquid medicine, and a connecting portion 11 is provided at one end away from the direction of liquid medicine spraying. A guide portion 12 is provided on the side wall of the connecting portion 11. The spray pump 2 is coaxially arranged with the nozzle 1 and compresses its internal space to pump the liquid medicine to the nozzle 1 when the nozzle 1 is pressed axially. The dosage adjustment component 3 is formed by the nozzle 1 and is sleeved with the connecting portion 11. A first dosage guiding channel 31 and a second dosage guiding channel 32 are provided between the side wall of the dosage adjustment component 3 and the side wall of the connecting portion 11, and are arranged axially along the spray pump 2. The guide portion 12 can be switched to be connected to the first dosage guiding channel 31 and the second dosage guiding channel 32 respectively and can move along the first dosage guiding channel 31 and the second dosage guiding channel 32 respectively. The travel distance of the guide portion 12 along the first dosage guiding channel 31 is greater than the travel distance along the second dosage guiding channel 32.
[0030] Specifically, the nozzle 1 is used to spray the liquid medicine. The nozzle 1 has a cylindrical structure, and a connecting part 11 is provided at the end of the nozzle 1 away from the direction of liquid medicine spraying. The connecting part 11 has a cylindrical or annular structure, and a guide part 12 is provided on the side wall of the connecting part 11. The guide part 12 can be a protrusion structure formed by the side wall of the connecting part 11 protruding outward, a pin structure embedded in the side wall of the connecting part 11, or a rib structure formed by the side wall of the connecting part 11 itself. The shape of the guide part 12 can be cylindrical, square, triangular, or other shapes suitable for cooperating with the guide channel. A nozzle is provided at the top of the nozzle 1, and the nozzle is used to atomize and spray the liquid medicine. The spray pump 2 is coaxially arranged with the nozzle 1 and is located below the nozzle 1. The spray pump 2 compresses its internal space as the nozzle 1 is pressed axially to pump the liquid medicine into the nozzle 1. The spray pump 2 can adopt a piston pump body structure, a diaphragm pump body structure, or other structures that can achieve liquid medicine pumping through compression. The dosage adjustment component 3 is enclosed and has a cylindrical or annular structure. The dosage adjustment component 3 is sleeved onto the connecting part 11, with the dosage adjustment component 3 positioned on the outside of the connecting part 11, or the connecting part 11 positioned on the outside of the dosage adjustment component 3. A first dosage guide channel 31 and a second dosage guide channel 32 are provided between the sidewall of the dosage adjustment component 3 and the sidewall of the connecting part 11, arranged axially along the spray pump 2. The first dosage guide channel 31 and the second dosage guide channel 32 can be located on the inner wall of the dosage adjustment component 3, or on the outer wall of the connecting part 11, or they can be formed by the inner wall of the dosage adjustment component 3 and the outer wall of the connecting part 11 together. The guide part 12 can be switched to connect to the first dosage guide channel 31 and the second dosage guide channel 32 respectively, and can move along the first dosage guide channel 31 and the second dosage guide channel 32 respectively. The guide part 12 can be switched by rotation, sliding, or plugging / unplugging, which is not limited here.
[0031] Specifically, since the first dose guiding channel 31 and the second dose guiding channel 32 are arranged along the axial direction of the spray pump 2, when the guide part 12 moves along the first dose guiding channel 31, the nozzle 1 can be pressed for a larger stroke, and the internal space that the spray pump 2 can compress is larger. When the guide part 12 moves along the second dose guiding channel 32, the nozzle 1 can be pressed for a smaller stroke, and the internal space that the spray pump 2 can compress is smaller. By switching and cooperating with different dose guiding channels, the internal space that the spray pump 2 can compress varies, thereby enabling a single device to flexibly switch between two doses, meeting the differentiated dose requirements of different populations, different stages of illness, and different medication scenarios.
[0032] Reference Figure 5In one embodiment, a switching channel 33 is further provided between the side wall of the dose adjustment member 3 and the side wall of the connecting part 11, which is arranged circumferentially along the nozzle 1. The switching channel 33 is connected to the first dose guide channel 31 and the second dose guide channel 32 respectively. The guide part 12 can move along the switching channel 33 as the nozzle 1 rotates to switch to the first dose guide channel 31 and the second dose guide channel 32.
[0033] Specifically, a switching channel 33 is provided between the side wall of the dose adjusting member 3 and the side wall of the connecting part 11, arranged circumferentially along the nozzle 1. The switching channel 33 has an arc-shaped or spiral structure. The switching channel 33 connects the first dose guiding channel 31 and the second dose guiding channel 32 respectively. The switching channel 33 can be located on the inner wall of the dose adjusting member 3 or on the outer wall of the connecting part 11. The shape and length of the switching channel 33 are designed according to the needs of the nozzle 1 to rotate and switch. The guide part 12 can move along the switching channel 33 as the nozzle 1 rotates to switch to the first dose guiding channel 31 and the second dose guiding channel 32. Specifically, when a dose needs to be switched, the user rotates the nozzle 1, and the guide part 12 moves from the first dose guide channel 31 into the switching channel 33, moves along the switching channel 33 and then enters the second dose guide channel 32, or moves from the second dose guide channel 32 into the switching channel 33, moves along the switching channel 33 and then enters the first dose guide channel 31. By setting the switching channel 33, the guide part 12 can smoothly switch between the first dose guide channel 31 and the second dose guide channel 32, allowing the user to switch doses through a simple rotation operation, thus improving the convenience of operation.
[0034] Reference Figure 6 In this embodiment, the first dose guiding channel 31 includes a pair of radially symmetrical first guide grooves formed on the inner wall of the connecting portion 11, the pair of first guide grooves extending axially from the top of the connecting portion 11 to the bottom of the connecting portion 11; the second dose guiding channel 32 includes a pair of radially symmetrical second guide grooves formed on the inner wall of the connecting portion 11, the pair of second guide grooves extending axially from a position below the top of the connecting portion 11 to the bottom of the connecting portion 11.
[0035] Specifically, the first dose guiding channel 31 includes a pair of radially symmetrical first guide grooves formed on the inner wall of the connecting portion 11. The first guide grooves have an elongated groove structure. The pair of first guide grooves extend axially from the top of the connecting portion 11 to the bottom of the connecting portion 11. The extension direction of the first guide grooves is parallel to the axis of the spray pump 2. The length of the first guide grooves determines the pressing stroke of the nozzle 1 at the first dose setting. The second dose guiding channel 32 includes a pair of radially symmetrical second guide grooves formed on the inner wall of the connecting portion 11. The second guide grooves have an elongated groove structure. The pair of second guide grooves extend axially from a position below the top of the connecting portion 11 to the bottom of the connecting portion 11. The starting position of the second guide groove is lower than the starting position of the first guide groove, so that the axial length of the second guide groove is less than the axial length of the first guide groove. Specifically, since the first guide groove extends from the top of the connecting part 11, the guide part 12 can move downward from the top of the connecting part 11 after entering the first guide groove, with a large movement stroke. On the other hand, the second guide groove extends from a position below the top of the connecting part 11, and the guide part 12 can only move downward from this lower position after entering the second guide groove, with a smaller movement stroke. By designing the different starting positions of the first guide groove and the second guide groove, two guide channel structures with different movement strokes are realized, thereby corresponding to two different dosage levels.
[0036] Continue to refer to Figure 6 In this embodiment, the switching channel 33 includes a pair of spiral guide grooves extending circumferentially along the inner wall of the connecting portion 11; one of the spiral guide grooves is connected to one of the first guide grooves and one of the second guide grooves at both ends; and the other spiral guide groove is connected to another of the first guide grooves and another of the second guide grooves at both ends.
[0037] Specifically, the switching channel 33 includes a pair of spiral guide grooves extending circumferentially along the inner wall of the connecting portion 11. The spiral guide grooves have an arc-shaped groove structure and, while extending circumferentially along the connecting portion 11, also have a certain height change in the axial direction. The two ends of one spiral guide groove are respectively connected to one first guide groove and one second guide groove, and the two ends of the other spiral guide groove are respectively connected to another first guide groove and another second guide groove, forming two mutually symmetrical dose switching paths. When the guide portion 12 rotates with the nozzle 1, it can make a combined circumferential and a small amount of axial movement along the spiral guide groove to achieve a smooth switching from the first guide groove to the corresponding second guide groove. Specifically, when the nozzle 1 rotates, the guide part 12 moves along the spiral guide groove. Since the spiral guide groove has a height change in the axial direction, the guide part 12 will also undergo axial displacement during the movement along the spiral guide groove, thereby realizing the switching from the first guide groove to the second guide groove or from the second guide groove to the first guide groove. By setting the spiral guide groove, the rotational motion of the nozzle 1 is converted into the axial displacement of the guide part 12, realizing the motion conversion in the dosage switching process and making the switching process smoother.
[0038] Furthermore, continue to refer to Figure 6 One end of the spiral guide groove is connected to the top of the first guide groove, and the other end is connected to the top of the second guide groove. One end of the spiral guide groove is higher than the other end of the spiral guide groove. The top of the first guide groove and / or the second guide groove is also provided with a locking part 34. The guide part 12 elastically abuts against the locking part 34 under the elastic force of the spray pump.
[0039] Specifically, the spiral guide groove extends circumferentially along the inner wall of the connecting part 11, with one end connected to the top of the first guide groove and the other end connected to the top of the second guide groove. The height of one end of the spiral guide groove is higher than that of the other end, forming a spiral extension trajectory with a height difference. When the guide part 12 moves along the spiral guide groove, it can synchronously adjust its axial height along the trajectory. The top of the first guide groove is also provided with a locking part 34, or the top of the second guide groove is also provided with a locking part 34, or both the tops of the first and second guide grooves are provided with locking parts 34. The locking part 34 has a groove-shaped structure and is located at the top of the guide groove. The spray pump 2 is provided with an elastic reset structure, which can continuously generate an upward axial elastic force, which will continuously act on the nozzle 1. When the guide part 12 rotates with the nozzle 1 to the top of the first or second guide groove, it engages with the locking part 34 under the upward elastic force of the spray pump 2, forming a stable dose level lock. This engagement process provides clear tactile feedback, indicating to the user that the dose has been switched to the correct position. When switching the dose channel again, simply apply a circumferential rotational force to the nozzle 1 to overcome the continuous upward elastic force of the spray pump 2, allowing the guide part 12 to pass over the locking part 34 groove and enter the spiral guide groove connected to the guide groove for switching between different dose channels. The height difference design of the spiral guide groove, combined with the elastic locking part 34, enables simultaneous dose switching and level locking, effectively preventing dose drift and accidental dose switching, ensuring the accuracy of dose setting and the stability of the structure. Furthermore, the engagement and passage over the groove provides clear tactile feedback, allowing the user to intuitively determine whether the dose has been switched to the correct position, thus optimizing the user experience.
[0040] Furthermore, continue to refer to Figure 6 The spiral guide groove extends at an angle of 90° in the circumferential direction of the connecting part 11, so that the nozzle 1 can complete the dose switching within a 90° rotation range.
[0041] Specifically, the spiral guide groove extends 90° in the circumferential direction of the connecting part 11, meaning that the spiral guide groove spans a 90° circumferential angle from one end to the other. When the nozzle 1 rotates 90°, the guide part 12 moves from one end of the spiral guide groove to the other, completing the switch from the first guide groove to the second guide groove or from the second guide groove to the first guide groove. In essence, the user only needs to rotate the nozzle 1 90° to complete the dose switching, making the operation simple and convenient. By designing the circumferential extension angle of the spiral guide groove to 90°, the nozzle 1 completes the dose switching within a 90° rotation range, ensuring the convenience of the switching operation while avoiding the problems of inconvenience caused by excessive rotation angle or accidental switching due to insufficient rotation angle.
[0042] Reference Figure 7In this embodiment, the guide portion 12 includes a pair of guide posts that are radially symmetrical along the connecting portion 11. The guide posts protrude radially outward from the outer wall of the connecting portion 11. When the guide portion 12 is switched to be connected to the first dose guiding channel 31, the pair of guide posts are respectively connected to the pair of first guide grooves. When the guide portion 12 is switched to be connected to the second dose guiding channel 32, the pair of guide posts are respectively connected to the pair of second guide grooves. When the guide portion 12 is switched to be connected to the switching channel 33, the pair of guide posts are respectively connected to the pair of spiral guide grooves.
[0043] Specifically, the guide portion 12 includes a pair of guide posts radially symmetrical along the connecting portion 11. The guide posts are cylindrical or square-shaped, protruding radially outward from the outer wall of the connecting portion 11. The guide posts can be integrally formed with the connecting portion 11, or fixed to the connecting portion 11 by embedding or welding. When the guide portion 12 is switched to connect with the first dose guiding channel 31, the pair of guide posts are respectively connected to a pair of first guide grooves, and the guide posts can move along the first guide grooves. When the guide portion 12 is switched to connect with the second dose guiding channel 32, the pair of guide posts are respectively connected to a pair of second guide grooves, and the guide posts can move along the second guide grooves. When the guide portion 12 is switched to connect with the switching channel 33, the pair of guide posts are respectively connected to a pair of spiral guide grooves, and the guide posts can move along the spiral guide grooves. Specifically, a pair of guide posts cooperate with a pair of first guide grooves, a pair of second guide grooves, or a pair of spiral guide grooves to guide and limit the movement between the nozzle 1 and the dosage adjustment component 3. When the nozzle 1 is pressed, the guide posts move axially along the first or second guide groove, limiting the direction and stroke of the nozzle 1. When the nozzle 1 is rotated, the guide posts move along the spiral guide groove, realizing the switching of the guide part 12 between the first and second guide grooves. Through the cooperation of the guide posts, guide grooves, and spiral guide grooves, the stable movement and precise positioning of the nozzle 1 are achieved, ensuring the accuracy of dosage switching and liquid spraying.
[0044] Reference Figure 8 In one embodiment, the variable dose spray assembly further includes a cap 4, which is fixedly connected to the spray pump 2 and the dose adjustment member 3 respectively. The cap 4 is axially through, the dose adjustment member 3 is fixedly connected to the top of the cap 4, and the spray pump 2 is fixedly connected in the cap 4 and passes through the cap 4 and the dose adjustment member 3.
[0045] Specifically, the variable dosage spray assembly also includes a cap 4, which has a cylindrical structure. The cap 4 is fixedly connected to the spray pump 2 and the dosage adjustment component 3, respectively. The cap 4 is axially through-hole, with openings at both the top and bottom. The dosage adjustment component 3 is fixedly connected to the top of the cap 4. The dosage adjustment component 3 can be fixed to the top of the cap 4 by snap-fit connection, threaded connection, or interference fit. Preferably, in this embodiment, the top of the cap 4 is provided with multiple circumferentially spaced fixing ribs 41, and the bottom of the dosage adjustment component 3 is provided with multiple circumferentially spaced fixing grooves 35. The fixing grooves 35 and the fixing ribs 41 are matched one-to-one to achieve a fixed connection between the two. The spray pump 2 is fixedly connected in the cap 4 and passes through the cap 4 and the dosage adjustment component 3. The spray pump 2 can be fixed in the cap 4 by snap-fit connection, threaded connection, or interference fit. Specifically, the bottle cap 4 serves as a connector, fixing the dosage adjustment component 3 and the spray pump 2 together to form an integrated variable dosage spray assembly. At the same time, the bottle cap 4 is also used to install the variable dosage spray assembly onto the bottle body. Through the setting of the bottle cap 4, the stable connection and overall assembly of each component are achieved, which facilitates the production, transportation and use of the variable dosage spray assembly.
[0046] In other embodiments, the protruding structure at the top of the bottle cap 4 is provided with circumferentially spaced clearance grooves 42. The position of the clearance grooves 42 corresponds to the bottom position of the first guide groove and the second guide groove, so that the clearance grooves 42 are axially connected with the first guide groove and the second guide groove, respectively. When the dosage adjustment member 3 is fixed to the top of the bottle cap 4, the protruding structure at the top of the bottle cap 4 will block the first guide groove and the second guide groove. Therefore, by providing clearance grooves 42 on the protruding structure at the top of the bottle cap 4, the clearance grooves 42 can be axially connected with the first guide groove and the second guide groove, respectively, thereby avoiding obstruction of the movement of the guide part 12 in the first guide groove and the second guide groove.
[0047] Continue to refer to Figure 6 In one embodiment, the sidewall of the dose adjustment member 3 is transparent, and a first dose mark 36 and a second dose mark 37 are provided on the sidewall of the dose adjustment member 3. The first dose mark 36 is adjacent to the first dose guiding channel 31, and the second dose mark 37 is adjacent to the second dose guiding channel 32.
[0048] Specifically, the sidewall of the dose adjuster 3 is transparent, and the material of the dose adjuster 3 can be transparent plastic or transparent glass. A first dose mark 36 and a second dose mark 37 are provided on the sidewall of the dose adjuster 3. The first dose mark 36 and the second dose mark 37 can be numbers, letters, symbols, or color markings, for example, markings of 0.10ml or 0.20ml. The first dose mark 36 is adjacent to the first dose guide channel 31, and the second dose mark 37 is adjacent to the second dose guide channel 32. Specifically, when the guide part 12 is located in the first dose guide channel 31, the user can see the first dose mark 36 through the transparent sidewall of the dose adjuster 3, indicating that the current dose is the first dose. When the guide part 12 is located in the second dose guide channel 32, the user can see the second dose mark 37 through the transparent sidewall of the dose adjuster 3, indicating that the current dose is the second dose. Through the setting of the transparent sidewall and dose marks, the dose is visualized, allowing the user to intuitively identify the current dose level and reducing the risk of misoperation.
[0049] Reference Figures 1-8 The present invention also provides a spraying device, which includes the variable dose spraying component described in the above embodiments. The variable dose spraying component has been described in detail in the above embodiments, and will not be described again here for the sake of brevity.
[0050] Specifically, this embodiment applies the aforementioned variable-dose spray component to a spray device, enabling the spray device to have a variable-dose spray function. This breaks through the design limitation of traditional spray devices that can only output a single dose, and solves the technical problem that traditional spray devices cannot meet the differentiated dosage requirements of different scenarios and populations. By integrating the variable-dose spray component into the spray device, the dosage of the spray device can be flexibly switched, greatly improving the applicability of the spray device. It can adapt to the dosage requirements of different populations, different application sites, and different stages of the disease, thus improving the practicality and versatility of the spray device.
[0051] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.
Claims
1. A variable-dose spray assembly, characterized in that, include: A nozzle is used to spray out liquid medicine. The end of the nozzle away from the direction of liquid medicine spraying is provided with a connecting part that is enclosed. A guide part is provided on the side wall of the connecting part. A spray pump, coaxially arranged with the nozzle, compresses its internal space as the nozzle is pressed axially to pump the liquid medicine into the nozzle. A dose adjustment component is formed therein, the dose adjustment component is sleeved with the connecting part, and a first dose guiding channel and a second dose guiding channel are provided between the side wall of the dose adjustment component and the side wall of the connecting part, which are arranged along the axial direction of the spray pump. The guiding part can be switched to be connected to the first dose guiding channel and the second dose guiding channel respectively and can move along the first dose guiding channel and the second dose guiding channel respectively. Wherein, the travel distance of the guide portion along the first dose guiding channel is greater than the travel distance along the second dose guiding channel.
2. The variable dosage spray assembly according to claim 1, characterized in that, A switching channel is also provided between the side wall of the dose adjustment component and the side wall of the connecting part, which is arranged circumferentially along the nozzle. The switching channel is connected to the first dose guide channel and the second dose guide channel respectively. The guide part can move along the switching channel as the nozzle rotates to switch to the first dose guide channel and the second dose guide channel.
3. The variable dosage spray assembly according to claim 2, characterized in that, The first dose guiding channel includes a pair of radially symmetrical first guide grooves formed on the inner wall of the connecting part, the pair of first guide grooves extending axially from the top of the connecting part to the bottom of the connecting part respectively; The second dose guiding channel includes a pair of radially symmetrical second guide grooves formed on the inner wall of the connecting portion, the pair of second guide grooves extending axially from a position below the top of the connecting portion toward the bottom of the connecting portion.
4. The variable dosage spray assembly according to claim 3, characterized in that, The switching channel includes a pair of spiral guide grooves extending circumferentially along the inner wall of the connecting portion; the two ends of one spiral guide groove are respectively connected to one of the first guide grooves and one of the second guide grooves; the two ends of the other spiral guide groove are respectively connected to another of the first guide grooves and another of the second guide grooves.
5. The variable dosage spray assembly according to claim 4, characterized in that, One end of the spiral guide groove is connected to the top of the first guide groove, and the other end is connected to the top of the second guide groove. One end of the spiral guide groove is higher than the other end of the spiral guide groove. The top of the first guide groove and / or the second guide groove is also provided with a locking part. The guide part elastically abuts against the locking part under the elastic force of the spray pump.
6. The variable dosage spray assembly according to claim 4, characterized in that, The spiral guide groove extends at an angle of 90° in the circumferential direction of the connection part, so that the nozzle can complete the dose switching within a 90° rotation range.
7. The variable dosage spray assembly according to claim 4, characterized in that, The guide portion includes a pair of guide posts that are radially symmetrical along the connecting portion, and the guide posts protrude radially outward from the outer wall of the connecting portion; When the guide section is switched to be connected to the first dose guiding channel, the pair of guide posts are respectively connected to the pair of first guide grooves; When the guide section is switched to be connected to the second dose guiding channel, the pair of guide posts are respectively connected to the pair of second guide grooves; When the guide section is switched to connect with the switching channel, the pair of guide posts are respectively connected to the pair of spiral guide grooves.
8. The variable dosage spray assembly according to any one of claims 1-7, characterized in that, It also includes a bottle cap, which is fixedly connected to the spray pump and the dosage adjustment component respectively. The bottle cap is axially through, the dosage adjustment component is fixedly connected to the top of the bottle cap, and the spray pump is fixedly connected to the bottle cap and passes through the bottle cap and the dosage adjustment component.
9. The variable dosage spray assembly according to any one of claims 1-7, characterized in that, The sidewall of the dose adjustment device is transparent, and a first dose mark and a second dose mark are provided on the sidewall of the dose adjustment device. The first dose mark is adjacent to the first dose guiding channel, and the second dose mark is adjacent to the second dose guiding channel.
10. A spraying device, characterized in that, Includes the variable-dose spray assembly as described in any one of claims 1-9.