Atomization device

Abstract

The invention relates to an atomizing device. The atomizing device comprises a container; the power mechanism comprises a piston and a piston rod assembly, the piston is movably mounted in the container, and the piston rod assembly at least comprises a first driving rod and a second driving rod; when the first driving rod moves for the first time, the first driving rod displaces in the first direction relative to the second driving rod, so that the total length of the piston rod assembly is increased, and the piston does not displace in the axial direction of the piston rod assembly; and when the first driving rod performs the second motion, the piston rod assembly integrally and synchronously displaces in the second direction, and the second driving rod drives the piston to displace in the second direction, so that the piston penetrates into the container, and liquid distribution is realized. The atomization device is simple and small in structure and convenient to carry, the risk that liquid in the container is polluted can be reduced, the liquid output pressure is small, and for medicine with relatively complex physicochemical properties, the complete structure and biological activity of the medicine can be kept in the delivery process.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an atomization device. Background Art

[0002] Nanobodies have a small molecular weight, stable structure, and strong tolerance, making them suitable for developing various administration routes. Among them, the administration methods include intravenous injection, subcutaneous administration, oral administration, atomization inhalation, etc. The inhalation administration method of nanobodies can avoid the first-pass effect of oral administration and shows good curative effects in the treatment of lung diseases, and will have good application prospects in the treatment of respiratory and lung diseases.

[0003] When using existing atomization devices (such as air compression or vibrating atomization devices) for drug administration, it is necessary to first add liquid medicine into the air compression or vibrating atomization device. The atomization device can convert the liquid medicine into mist or aerosol particles of appropriate size, and the particle size distribution after atomization will directly affect the subsequent inhalation and treatment effects. This atomization inhalation scheme has the following disadvantages:

[0004] (1) Air compression or vibrating atomization devices are large in volume and complex in structure. For the atomization of small doses of liquid medicine, the waste of liquid medicine is relatively serious, affecting the treatment effect.

[0005] (2) The physicochemical properties of nanobody drugs are relatively complex. When administered through existing air compression or vibrating atomization devices, this process requires the drug to be able to withstand the high pressure and acting force output by the atomization device and maintain the complete structure and biological activity of the drug during the delivery process. Summary of the Invention

[0006] Based on the above defects in the prior art, the purpose of the present invention is to provide an atomization device, which is simple and compact in structure, convenient to carry, with the liquid medicine stored in the storage chamber in advance, without the need to manually add the liquid into the atomization device, simplifying the operation steps and reducing the risk of liquid in the container being contaminated. It is powered by a power mechanism, with a relatively small pressure on the liquid output. For drugs with relatively complex physicochemical properties, it can maintain the complete structure and biological activity of the drug during the delivery process.

[0007] To this end, the present invention provides the following technical solutions.

[0008] The present invention provides an atomization device, which comprises:

[0009] A container for storing liquid;

[0010] A power mechanism, which includes a piston and a piston rod assembly. The piston is movably installed in the container, and the piston rod assembly includes at least a first driving rod and a second driving rod;

[0011] Wherein, when the first drive rod undergoes a first movement, the first drive rod is displaced relative to the second drive rod in a first direction, so that the total length of the piston rod assembly increases, and the piston does not displace axially;

[0012] When the first drive rod undergoes a second movement, the entire piston rod assembly is synchronously displaced in a second direction, and the second drive rod drives the piston to be displaced in the second direction, so that the piston penetrates into the container to achieve liquid dispensing; wherein, the first direction is opposite to the second direction.

[0013] Optionally, the atomization device further includes an operating member, which is connected to the first drive rod;

[0014] When the operating member undergoes a first movement under an external force, it drives the first drive rod to undergo a first movement; when the operating member undergoes a second movement under an external force, it drives the first drive rod to undergo a second movement.

[0015] Optionally, the first movement is configured to rotate in a first rotation while moving in the first direction; the second movement is configured to rotate in a second rotation while moving in the second direction; wherein, the first rotation and the second rotation directions are opposite.

[0016] Optionally, when the first drive rod undergoes a first movement, the second drive rod undergoes a first rotation and does not move in the first direction;

[0017] When the first drive rod undergoes a second movement, the entire piston rod assembly undergoes a second movement, and the second drive rod drives the piston to undergo a second movement.

[0018] Optionally, the piston rod assembly further includes a third drive rod, and the first drive rod, the third drive rod and the second drive rod cooperate in sequence;

[0019] When the first drive rod does not reach the limit position of the first drive rod and undergoes a first movement, the first drive rod is displaced relative to the third drive rod in the first direction, and the third drive rod drives the second drive rod to undergo a first rotation and does not move in the first direction;

[0020] When the first drive rod is displaced relative to the third drive rod in the first direction until the first drive rod is at the limit position of the first drive rod, the first drive rod can no longer be displaced relative to the third drive rod in the first direction. During the process of the first drive rod undergoing a first movement again, the third drive rod drives the first drive rod to be displaced relative to the second drive rod in the first direction, so that the total length of the piston rod assembly increases;

[0021] When the first driving rod makes the second movement, the first driving rod, the third driving rod and the second driving rod do not make relative movement with respect to each other.

[0022] Optionally, when the third drive rod is displaced in the first direction relative to the second drive rod until the third drive rod is in the third drive rod limit position, the third drive rod can no longer be displaced in the first direction relative to the second drive rod, the total length of the piston rod assembly reaches a maximum value, and the container completes its last use.

[0023] Optionally, the first driving rod is provided with a first sawtooth thread, the second driving rod is provided with a second sawtooth thread, and the third driving rod is provided with a third sawtooth thread and a fourth sawtooth thread;

[0024] The first sawtooth thread and the third sawtooth thread are threadedly matched, and the second sawtooth thread and the fourth sawtooth thread are threadedly matched.

[0025] Optionally, the third driving rod is a hollow structure, which is sleeved on the outer circumference of the first driving rod; the second driving rod is a hollow structure, which is sleeved on the outer circumference of the third driving rod;

[0026] The third sawtooth thread is arranged on the circumferential inner wall of the third driving rod, and the fourth sawtooth thread is arranged on the circumferential outer wall of the third driving rod.

[0027] Optionally, the atomization device further comprises an operating component connected to the first driving rod, and the operating component is used to drive the first driving rod to perform a first movement or a second movement;

[0028] The operating component is provided with a first clamping groove and an annular groove at one end facing the piston rod assembly, and the annular groove is arranged around the first clamping groove;

[0029] The first end of the first driving rod, which is away from the piston, extends out of the third driving rod and is clamped in the first clamping groove;

[0030] Before the atomizing device is used for the first time, the ends of the second driving rod and the third driving rod facing away from the piston are inserted into the annular groove.

[0031] Optionally, the power mechanism further comprises a meshing pawl and a ratchet; the pawl is eccentrically arranged at one end of the second driving rod, and the ratchet is coaxially connected to the piston;

[0032] When the first driving rod undergoes a first movement, the pawl rotates independently of the ratchet wheel;

[0033] When the first driving rod undergoes a second movement, the second driving rod pushes the piston to move in the second direction. Meanwhile, the pawl pushes the ratchet wheel to drive the piston to undergo a second rotation.

[0034] Optionally, an eccentric shaft is provided at one end of the second driving rod facing the piston, and the ratchet wheel is mounted on the eccentric shaft;

[0035] and / or, the ratchet wheel is snap-fitted to the piston;

[0036] and / or, a groove is provided at one end of the piston facing the second driving rod. At least two second snap-fit grooves are provided in the groove. At least two snap-fit protrusions are provided on the circumferential side wall of the ratchet wheel. The ratchet wheel is embedded in the groove, and the second snap-fit grooves are snap-fitted to the snap-fit protrusions one by one.

[0037] Optionally, the atomizing device further includes an operating member, which is connected to the first driving rod. The operating member is used to drive the first driving rod to undergo a first movement or a second movement;

[0038] The atomizing device further includes a housing. The container and the power mechanism are both provided in the housing. The operating member is movably inserted into the distal port of the housing, and the operating member is in sealing cooperation with the distal port.

[0039] Optionally, the atomizing device further includes a return sleeve and a return spring. At least part of the container is located in the return sleeve. Two ends of the return spring are respectively connected to the return sleeve and the housing. The return sleeve is connected to the operating member;

[0040] When the operating member undergoes a first movement under an external force, the return sleeve moves synchronously with the operating member, and the return spring is stretched;

[0041] When the operating member undergoes a second movement, the return spring retracts and applies a pulling force in the second direction to the return sleeve. The return sleeve pulls the operating member in the second direction.

[0042] Optionally, the circumferential inner wall of the return sleeve abuts against the circumferential outer wall of the container;

[0043] and / or, the operating member is provided with a driving gear, and the return sleeve is provided with a driven gear. The driving gear meshes with the driven gear and the two are in close cooperation;

[0044] and / or, the operating member is provided with a cap portion. The inner wall of the housing is provided with a first abutting surface, and the distal end of the housing is provided with a second abutting surface;

[0045] When the operating member makes a first movement, when the reset sleeve moves to abut against the first abutting surface, the operating member stops moving in the first direction;

[0046] When the operating member makes a second movement, when the operating member moves to make the cap abut against the second abutting surface, the operating member stops moving in the second direction.

[0047] Optionally, the atomizing device further includes an atomizing chip, which is arranged at the outlet end of the container; when the atomizing device performs liquid distribution, the liquid in the container is processed by the atomizing chip to form atomized fine particles and then escapes;

[0048] And / or, the atomizing device further includes a housing, and the container is arranged in the housing; a ring-shaped protrusion is arranged at the outlet end of the container, and a ring-shaped slot is arranged at the proximal end of the housing, and the ring-shaped protrusion is snap-fitted into the ring-shaped slot.

[0049] Optionally, the atomizing device further includes a mouthpiece assembly, which includes:

[0050] A mouthpiece housing, which is provided with a connection port, an inhalation port and an air intake port, and the connection port is communicated with the outlet end of the container;

[0051] A one-way valve, which is arranged in the air intake port.

[0052] Optionally, the atomizing device further includes an end cap, and the end cap covers the air intake port;

[0053] The end cap is provided with a plurality of air intake holes, and the one-way valve is installed on the side of the end cap facing the mouthpiece housing and covers the plurality of air intake holes.

[0054] The present invention has the following technical effects:

[0055] The present invention provides an atomizing device. By configuring a piston rod assembly and configuring the piston rod assembly to at least include a first driving rod and a second driving rod, and the piston rod assembly cooperates with the piston, the atomizing device has two separate states: a state to be atomized and an atomizing state. When the first driving rod makes a first movement each time to make the atomizing device in the state to be atomized, the total length of the piston rod assembly will increase once. When the first driving rod makes a second movement, the current total length of the piston rod assembly can smoothly push the piston to move in the second direction to achieve atomization, and the single stroke length of the piston is equal to the amount of increase in the total length of the piston rod assembly, so that the atomizing device can atomize quantitatively.

[0056] Moreover, with each use of the atomizing device, the total length of the piston rod assembly increases successively. At the same time, since the piston also gradually penetrates into the container, it can ensure that the overall length of the atomizing device does not increase. By optimizing the structure of the piston rod assembly, this solution is conducive to shortening the initial total length of the piston rod assembly, thereby facilitating the shortening of the overall length of the atomizing device and the miniaturized design of the atomizing device.

[0057] In addition, in the prior art, for the technical solutions of air compression or vibration atomizing devices, it is necessary to manually add liquid to the air compression or vibration atomizing device. However, in this solution, the liquid medicine is stored in the storage chamber in advance, and there is no need to manually add liquid to the atomizing device, which simplifies the operation steps, avoids new air being introduced into the container, and reduces the risk of contamination. Moreover, the atomizing device of this solution has a simple and compact structure, is convenient to carry, can reduce liquid waste for small-dose atomizing work, and the dose is more accurate. Furthermore, the atomizing device of this solution is powered by a power mechanism to achieve atomization, and the pressure on the liquid output is relatively small. For drugs with relatively complex physical and chemical properties (such as nanoantibody drugs), the complete structure and biological activity of the drug can be maintained during the delivery process. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 is an exploded view of the partial structure of the atomizing device of the present invention;

[0059] Figure 2 is a three-dimensional structural schematic diagram of the first driving rod of the present invention;

[0060] Figure 3 is a three-dimensional structural schematic diagram of the third driving rod of the present invention;

[0061] Figure 4 is a three-dimensional structural schematic diagram of the second driving rod of the present invention;

[0062] Figure 5 is a three-dimensional structural schematic diagram of the ratchet of the present invention;

[0063] Figure 6 is a three-dimensional structural schematic diagram of the piston of the present invention;

[0064] Figure 7 is a three-dimensional structural schematic diagram of the power mechanism of the atomizing device of the present invention before the first use;

[0065] Figure 8 is a three-dimensional structural schematic diagram of the operating component of the present invention;

[0066] Figure 9 is a partial structural cross-sectional view of the atomizing device of the present invention before the first use;

[0067] Figure 10 For Figure 9 Enlarged view of part A in

[0068] Figure 11 Partial structural side view of the atomizing device of the present invention in the initial state or after atomization is completed;

[0069] Figure 12 Partial structural cross-sectional view of the atomizing device of the present invention when waiting for atomization in the first stage;

[0070] Figure 13 Partial structural side view of the atomizing device of the present invention when waiting for atomization is completed;

[0071] Figure 14 Partial structural cross-sectional view of the atomizing device of the present invention during atomization;

[0072] Figure 15 Partial structural cross-sectional view of the atomizing device of the present invention when waiting for atomization in the second stage;

[0073] Figure 16 Partial structural cross-sectional view of the atomizing device of the present invention when in the state of terminating use;

[0074] Figure 17 Schematic perspective view of the mouthpiece assembly of the present invention;

[0075] Figure 18 Schematic perspective view of the end cap of the present invention;

[0076] Figure 19 Schematic perspective view of the one-way valve of the present invention.

[0077] Explanation of reference numerals

[0078] 100, Atomizing device;

[0079] 1, Container; 11, Ring-shaped protrusion; 12, Storage chamber;

[0080] 2, Power mechanism;

[0081] 21, Piston; 211, Groove; 2111, Second clamping groove; 212, Sealing ring; 213, Limit post;

[0082] 22, Piston rod assembly; 221, First drive rod; 2211, First serrated thread; 2212, First end; 222, Second drive rod; 2221, Second serrated thread; 2222, Eccentric shaft; 223, Third drive rod; 2231, Third serrated thread; 2232, Fourth serrated thread;

[0083] 23, Pawl;

[0084] 24. Ratchet; 241. Snap projection

[0085] 3. Operating member; 31. First snap groove; 32. Annular groove; 33. Driving tooth; 34. Cap portion; 341. End face of the cap portion; 342. Concavo-convex structure; 35. Cylindrical body

[0086] 4. Outer shell; 41. Distal port; 42. First abutting surface; 43. Second abutting surface; 44. Annular column

[0087] 5. Return sleeve; 51. Driven tooth; 52. End face of the sleeve; 53. Cylindrical body; 531. Connecting column; 54. First annular structure; 55. Second annular structure

[0088] 6. Return spring

[0089] 7. Atomization chip; 71. Flow channel

[0090] 8. Mouthpiece assembly; 81. Mouthpiece housing; 811. Connection port; 812. Suction port; 8121. Biting limit projection; 813. Air intake port; 82. Check valve; 83. End cap; 831. Air intake hole; 832. Mounting post Detailed implementation manners

[0091] To make the technical solutions and beneficial effects of the present invention more obvious and understandable, the following will be described in detail by listing specific embodiments. Unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical and scientific fields to which this application belongs

[0092] In the description of the present invention, unless otherwise clearly defined, the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of simplifying the description of the present invention, rather than indicating that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, that is, it cannot be understood as a limitation to the present invention

[0093] In the present invention, the terms "first" and "second" are only used for the purpose of clear description, and cannot be understood as the relative importance of the indicated features or the number of the indicated technical features. Therefore, the features defined with "first" and "second" may clearly include at least one such feature. In the description of the present invention, "a plurality of" means at least two; "several" means at least one; unless otherwise clearly defined

[0094] In the present invention, unless otherwise clearly defined, terms such as "installed", "connected", "joined", "fixed", "set", etc. shall be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integrally formed connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and can also be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0095] In the present invention, unless otherwise clearly defined, the first feature being "on", "above", "over", "upward", "below", "beneath", "under", or "downward" of the second feature can be that the first feature is in direct contact with the second feature, or the first feature and the second feature are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over", or "upward" of the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than the horizontal height of the second feature. The first feature being "below", "beneath", or "downward" of the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0096] The "first direction a" and "second direction b" mentioned in the present invention are both based on the markings in Figure 9 , Figure 12 , Figures 14 to 16 .

[0097] The following will Figures 1 to 19 describe in detail the atomizing device of the present invention.

[0098] In this embodiment, as Figure 1 , Figure 6 , Figure 7 and Figure 9 shown, the atomizing device 100 includes a container 1 and a power mechanism 2. The container 1 is used to store a liquid (such as a nanobody drug). The power mechanism 2 includes a piston 21 and a piston rod assembly 22. The piston 21 is movably installed in the container 1. The piston 21 is provided with a sealing ring 212. The sealing ring 212 is sealingly connected to the circumferential inner wall of the container 1. A storage chamber 12 is formed between the piston 21 and the inner wall of the container 1. The liquid is stored in the storage chamber 12. The piston rod assembly 22 at least includes a first driving rod 221 and a second driving rod 222.

[0099] As Figure 9 shown, before the first use of the atomizing device 100, the piston rod assembly 22 has an initial total length. When using the atomizing device 100, the atomizing device 100 will go through two steps of being to be atomized and atomized successively. Specifically, the atomizing device 100 includes the following process:

[0100] (1) First, as shown in Figure 12 , an external force causes the first drive rod 221 to perform a first movement. At this time, the first drive rod 221 will displace relative to the second drive rod 222 in the first direction a, so that the total length of the piston rod assembly 22 increases, and the piston 21 does not displace in its axial direction, that is, the spatial size of the storage chamber 12 does not change. When the first drive rod 221 completes the first movement, as shown in Figure 12 and Figure 13 , the atomizing device 100 is in a state to be atomized and has not started atomizing.

[0101] (2) Then, as shown in Figure 14 , when an external force causes the first drive rod 221 to perform a second movement, at this time, the piston rod assembly 22 as a whole synchronously displaces in the second direction b. In this way, the second drive rod 222 can drive the piston 21 to displace in the second direction b, so that the piston 21 penetrates into the container 1, and the space of the storage chamber 12 gradually becomes smaller. The liquid in the storage chamber 12 is squeezed, so that the atomizing device 100 realizes atomization. When the first drive rod 221 completes the second movement, the atomizing device 100 completes atomization. During the atomization process, the position of the piston 21 in the container 1 will further penetrate. This requires that when the atomizing device 100 is used next time, the piston rod assembly 22 needs to be longer in order to smoothly continue to push the piston 21 to move in the second direction b. In this solution, during each process of the atomizing device 100 waiting to be atomized, the total length of the piston rod assembly 22 will increase once, and thus it can smoothly continue to push the piston 21 to move in the second direction b during the current use process. That is, with each use of the atomizing device 100, the total length of the piston rod assembly 22 will increase successively, and since the piston 21 also penetrates into the container 1 successively, it can ensure that the overall length of the atomizing device 100 does not increase.

[0102] Among them, the first direction a is opposite to the second direction b. Specifically, the first direction a is the direction on the axial direction of the piston 21 and towards the distal end of the container 1, and the second direction b is the direction on the axial direction of the piston 21 and towards the proximal end of the atomizing device 100.

[0103] It should be understood that in this article, "proximal end" refers to the end of each component of the atomizing device 100 close to the part (such as the human mouth and nose) where the target object receives atomization during use, and "distal end" refers to the end of each component of the atomizing device 100 far from the part where the target object receives atomization during use.

[0104] In the above technical solution, by configuring the piston rod assembly 22, the piston rod assembly 22 is configured to include at least a first drive rod 221 and a second drive rod 222. When the atomizing device 100 is in use, the piston rod assembly 22 cooperates with the piston 21, so that the atomizing device 100 has two separate states: a state to be atomized and an atomizing state. When the first drive rod 221 makes a first movement each time to make the atomizing device 100 in the state to be atomized, the total length of the piston rod assembly 22 increases once. When the first drive rod 221 makes a second movement, the current total length of the piston rod assembly 22 can smoothly push the piston 21 to move along the second direction b to achieve atomization. Moreover, the single stroke length of the piston 21 is equal to the amount of increase in the total length of the piston rod assembly 22, so that the atomizing device 100 can atomize quantitatively.

[0105] Moreover, with each use of the atomizing device 100, the total length of the piston rod assembly 22 increases successively. At the same time, since the piston 21 also goes deeper into the container 1 successively, it can be ensured that the overall length of the atomizing device 100 does not increase. By optimizing the structure of the piston rod assembly 22, this solution is beneficial to shortening the initial total length of the piston rod assembly 22, and thus beneficial to shortening the overall length of the atomizing device 100, which is beneficial to the miniaturized design of the atomizing device 100.

[0106] In addition, in the prior art, the technical solutions of air compression or vibration type atomizing devices require manual addition of liquid into the air compression or vibration type atomizing devices. However, in this solution, the liquid medicine is stored in the storage chamber 12 in advance, and there is no need to manually add liquid into the atomizing device 100, which simplifies the operation steps, avoids new air being introduced into the container 1, and reduces the pollution risk. Moreover, the atomizing device 100 of this solution has a simple and compact structure and is convenient to carry. For small-dose atomizing work, it can reduce liquid waste and the dose is more accurate. Furthermore, the atomizing device 100 of this solution is powered by the power mechanism 2 to achieve atomization, and the pressure on the liquid output is small. For drugs with relatively complex physical and chemical properties (such as nanobody drugs), the complete structure and biological activity of the drug can be maintained during the delivery process.

[0107] In one embodiment, as Figure 1 and Figure 9As shown, the atomizing device 100 further includes an operating member 3, and the operating member 3 is connected to the first driving rod 221. When the operating member 3 undergoes a first movement under an external force, the operating member 3 drives the first driving rod 221 to undergo a first movement; when the operating member 3 undergoes a second movement under an external force, the operating member 3 drives the driving rod 221 to undergo a second movement. Specifically, since the piston rod assembly 22 needs to be inserted into the container 1 to push the piston 21, the lateral dimension of the first driving rod 221 is limited and relatively small, which is not convenient for the user to hold. In this solution, by configuring the operating member 3, the size of the operating member 3 can be adjusted to facilitate the user's holding.

[0108] In one embodiment, the first movement is configured to rotate first and move along the first direction a at the same time. The second movement is configured to rotate second and move along the second direction b at the same time. Among them, the first rotation and the second rotation are in opposite directions. Specifically, as Figure 9 and Figure 12 shown, when the atomizing device 100 is to be atomized, an external force drives the first driving rod 221 to rotate first and move along the first direction a at the same time, so that the first driving rod 221 undergoes a displacement in the first direction a relative to the second driving rod 222, and the total length of the piston rod assembly 22 increases once. As Figure 12 and Figure 14 shown, when the atomizing device 100 is atomizing, the first driving rod 221 rotates second and moves along the second direction b at the same time. At this time, there is no relative movement between the first driving rod 221 and the second driving rod 222, and the piston rod assembly 22 as a whole undergoes a displacement in the second direction b, so that the second driving rod 222 can drive the piston 21 to undergo a displacement in the second direction b, thereby realizing atomization.

[0109] Furthermore, when the first driving rod 221 undergoes the first movement, the second driving rod 222 rotates first and does not move along the first direction a. It should be understood that when the first driving rod 221 rotates first, the second driving rod 222 also rotates first, but their rotation speeds are different, so that the first driving rod 221 can undergo a displacement relative to the second driving rod 222 in the first direction a. When the first driving rod 221 undergoes the second movement, the piston rod assembly 22 as a whole undergoes the second movement, and the second driving rod 222 drives the piston 21 to undergo the second movement, that is, both the second driving rod 222 and the piston 21 rotate second and move along the second direction b at the same time.

[0110] Furthermore, as Figure 1 and Figure 10As shown, the piston rod assembly 22 further includes a third drive rod 223. The first drive rod 221, the third drive rod 223, and the second drive rod 222 are sequentially engaged, and the third drive rod 223 serves as a connection between the first drive rod 221 and the second drive rod 222.

[0111] As Figure 9 and Figure 12 shown, when the first drive rod 221 has not reached the limit position of the first drive rod and the first drive rod 221 undergoes a first movement to cause the atomization device 100 to be ready for atomization, the first drive rod 221 displaces relative to the third drive rod 223 in the first direction a. The third drive rod 223 drives the second drive rod 222 to undergo a first rotation and does not move along the first direction a. The rotational speeds of the first drive rod 221 and the third drive rod 223 are different. That is, during the atomization preparation process in the first stage, the first drive rod 221 can displace relative to the third drive rod 223 in the first direction a, while the third drive rod 223 and the second drive rod 222 cannot displace in the first direction a, so as to increase the total length of the piston rod assembly 22. When the first drive rod 221 undergoes a second movement, there is no relative movement between the first drive rod 221, the third drive rod 223, and the second drive rod 222, so that the atomization device 100 can perform atomization.

[0112] As Figure 15As shown, as the number of uses of the atomizing device 100 gradually increases, the displacement of the first driving rod 221 in the first direction a also gradually increases. Until the first driving rod 221 is displaced relative to the third driving rod 223 in the first direction a to the extreme position of the first driving rod 221, the first driving rod 221 can no longer be displaced relative to the third driving rod 223 in the first direction a. During the process of the first driving rod 221 making the first movement again, due to the acting forces applied to the first driving rod 221, including the force along the first rotation direction and the force along the first direction a, therefore, the first driving rod 221 will drive the third driving rod 223 to be displaced relative to the second driving rod 222 in the first direction a. The third driving rod 223 and the second driving rod 222 have different rotation speeds, so that the total length of the piston rod assembly 22 increases. That is, during the atomization process to be carried out in the second stage, the first driving rod 221 cannot be displaced relative to the third driving rod 223 in the first direction a, while the third driving rod 223 can be displaced relative to the second driving rod 222 in the first direction a. And due to the cooperation of the first driving rod 221 and the third driving rod 223, the third driving rod 223 will be displaced relative to the second driving rod 222 in the first direction a together with the first driving rod 221. That is, the first driving rod 223 and the third driving rod 223 move synchronously. When the first driving rod 221 makes the second movement, there is no relative movement between the first driving rod 221, the third driving rod 223 and the second driving rod 222, so that the atomizing device 100 can atomize.

[0113] In the above solution, during the entire service life of the atomizing device 100, the atomization to be carried out by the atomizing device 100 has two stages, namely the first stage and the second stage. Among them, the number of uses of the atomizing device 100 corresponding to the first stage and the second stage respectively is related to the lengths of the first driving rod 221, the third driving rod 223 and the second driving rod 222 and the cooperation relationship between them. For example, by limiting the lengths of the first driving rod 221, the third driving rod 223 and the second driving rod 222 and the cooperation relationship between them, the entire service life of the atomizing device 100 is 20 times. The number of uses corresponding to the first stage can be the first 10 times of initial use, and the number of uses corresponding to the second stage is the remaining 10 times. By adding the third driving rod 223, the maximum length that the piston rod assembly 22 can finally reach can be further extended, and thus the total number of uses of the atomizing device 100 can be increased.

[0114] Of course, the piston rod assembly 22 is not limited to including three driving rods, and may further include a fourth driving rod, a fifth driving rod, or even more driving rods to meet the requirements of more usage times. Preferably, for the purpose of facilitating the miniaturization design of the atomizing device 100, the piston rod assembly 22 includes a first driving rod 221, a third driving rod 223, and a second driving rod 222. And when the third driving rod 223 is displaced relative to the second driving rod 222 in the first direction a to the third driving rod limit position, as Figure 16 shown, the third driving rod 223 can no longer be displaced relative to the second driving rod 222 in the first direction a, the total length of the piston rod assembly 22 reaches the maximum value, and the container 1 completes the last use. At this time, the atomizing device 100 is in a state of terminating use. Of course, the last use of the container 1 can also be directly determined by the piston 21, that is, when the piston 21 moves along the second direction b to abut against the inner wall of the outlet end of the container 1, the container 1 completes the last use. At this time, the third driving rod 223 may reach the third driving rod limit position or may not reach the third driving rod limit position.

[0115] In an embodiment, as Figure 2 , Figure 3 , Figure 4 and Figure 10 shown, the first driving rod 221 is provided with a first serrated thread 2211, the second driving rod 222 is provided with a second serrated thread 2221, and the third driving rod 223 is provided with a third serrated thread 2231 and a fourth serrated thread 2232. The first serrated thread 2211 and the third serrated thread 2231 are in threaded engagement with each other, and the second serrated thread 2221 and the fourth serrated thread 2232 are in threaded engagement with each other. Specifically, the first driving rod 221, the third driving rod 223, and the second driving rod 222 are sequentially in threaded engagement through serrated threads, and can transmit a unidirectional axial force. Thus, as Figure 12 shown, during the atomization process to be performed in the first stage, the first driving rod 221 can rotate relative to the third driving rod 223 while being displaced in the first direction a, so that the total length of the piston rod assembly 22 increases. However, during the atomization process, the first driving rod 221 cannot be displaced relative to the third driving rod 223 in the second direction b, and the first driving rod 221, the third driving rod 223, and the second driving rod 222 move synchronously, so that the total length of the piston rod assembly 22 remains unchanged. Similarly, as Figure 15As shown, during the atomization process of the second stage, the third drive rod 223 can rotate relative to the second drive rod 222 while displacing in the first direction a, so as to increase the total length of the piston rod assembly 22. However, during the atomization process, the third drive rod 223 cannot displace relative to the second drive rod 222 in the second direction b, so that the total length of the piston rod assembly 22 remains unchanged. That is to say, the total length of the piston rod assembly 22 can increase during the atomization process and does not change during the atomization process.

[0116] Furthermore, as Figure 2 , Figure 3 , Figure 4 and Figure 10 shown, the third drive rod 223 is of a hollow structure, and the third drive rod 223 is sleeved on the outer periphery of the first drive rod 221; the second drive rod 222 is of a hollow structure, and the second drive rod 222 is sleeved on the outer periphery of the third drive rod 223. The third serrated thread 2231 is provided on the circumferential inner wall of the third drive rod 223, and the fourth serrated thread 2232 is provided on the circumferential outer wall of the third drive rod 223. The structures of the various components of the piston rod assembly 22 in this solution are simple and compactly distributed, which is beneficial to reducing the space occupied by the piston rod assembly 22.

[0117] Furthermore, as Figures 7 to 10 shown, one end of the operating member 3 facing the piston rod assembly 22 is provided with a first clamping groove 31 and an annular groove 32, and the annular groove 32 is arranged around the first clamping groove 31. The first end 2212 of the first drive rod 221 facing away from the piston 21 extends out of the third drive rod 223, and the first end 2212 is clamped in the first clamping groove 31. In this way, the user can drive the first drive rod 221 to move by operating the operating member 3. Before the atomization device 100 is used for the first time, one end of the second drive rod 222 and the third drive rod 223 facing away from the piston 21 is inserted into the annular groove 32, making full use of the space between the operating member 3 and the piston 21 to extend the lengths of the second drive rod 222 and the third drive rod 223 as much as possible, that is, to extend the maximum value of the total length of the piston rod assembly 22 as much as possible.

[0118] In an embodiment, as Figure 1 , Figure 7 and Figure 10As shown, the power mechanism 2 further includes an engaging ratchet pawl 23 and a ratchet wheel 24. The ratchet pawl 23 is eccentrically provided at one end of the second driving rod 222, and the ratchet wheel 24 is coaxially connected to the piston 21. When the first driving rod 221 undergoes a first movement, the second driving rod 222 will undergo a first rotation. Since the ratchet pawl 23 is eccentrically provided on the second driving rod 222, the ratchet pawl 23 will rotate around the central axis of the second driving rod 222. And because the ratchet pawl and ratchet wheel principle is a unidirectional intermittent motion mechanism, during the atomization process to be carried out, the ratchet pawl 23 rotates independently of the ratchet wheel 24, and the ratchet wheel 24 does not rotate, and thus the piston 21 remains stationary. When the first driving rod 221 undergoes a second movement, the second driving rod 222 will undergo a second rotation, and the ratchet pawl 23 rotates in the reverse direction. Therefore, the ratchet pawl 23 will drive the ratchet wheel 24 to rotate, and the ratchet wheel 24 drives the piston 21 to rotate. That is, while the second driving rod 222 pushes the piston 21 to move along the second direction b, the ratchet pawl 23 pushes the ratchet wheel 24 to drive the piston 21 to undergo a second rotation.

[0119] Further, as Figure 4 and Figure 10 shown, an eccentric shaft 2222 is provided at the end of the second driving rod 222 facing the piston 21, and the ratchet pawl 23 is installed on the eccentric shaft 2222, and the assembly of the ratchet pawl 23 is convenient.

[0120] Further, the ratchet wheel 24 is snap-fitted to the piston 21, and the assembly of the ratchet wheel 24 and the piston 21 is convenient.

[0121] Further, as Figure 5 and Figure 6 shown, a groove 211 is provided at the end of the piston 21 facing the second driving rod 222. Two second snap-fit grooves 2111 are provided in the groove 211. Two snap-fit protrusions 241 are provided on the circumferential side wall of the ratchet wheel 24. The ratchet wheel 24 is embedded in the groove 211, and the second snap-fit grooves 2111 and the snap-fit protrusions 241 are snap-fitted one by one. The ratchet wheel 24 and the piston 21 are firmly and stably snap-fitted. In order to improve the stability of the snap-fit between the two, the two snap-fit protrusions 241 are distributed radially along the ratchet wheel 24. Of course, the number of the groove 211 and the snap-fit protrusions 241 is not limited to two, and may also be three or even more.

[0122] In an embodiment, as Figure 1 、 Figure 9 and Figure 11 shown, the atomization device 100 further includes a housing 4. The housing 4 has a hollow cylindrical structure. The container 1 and the power mechanism 2 are both provided in the housing 4. The housing 4 is used to improve the aesthetic appearance of the atomization device 100 and plays a role in protecting and dust-proofing the container 1 and the power mechanism 2. The operating member 3 is movably inserted into the distal port 41 of the housing 4, and the operating member 3 and the distal port 41 are in sealing cooperation.

[0123] Further, asFigure 1 , Figure 9 and Figure 12 As shown in Figure 1 , Figure 9 , and Figure 12 , the atomizing device 100 further includes a reset sleeve 5 and a reset spring 6. Both the reset sleeve 5 and the reset spring 6 are located in the housing 4. The container 1 is at least partially located in the reset sleeve 5. Two ends of the reset spring 6 are respectively connected to the reset sleeve 5 and the housing 4. The reset sleeve 5 is connected to the operating member 3. When the operating member 3 undergoes a first movement under an external force, the reset sleeve 5 moves synchronously with the operating member 3, and the reset spring 6 is stretched, and the reset spring 6 is in an energy storage state. When the operating member 3 undergoes a second movement, the reset spring 6 retracts and applies a pulling force along the second direction b to the reset sleeve 5, and the reset sleeve 5 pulls the operating member 3 along the second direction b. In this solution, by providing the reset sleeve 5 and the reset spring 6, during the atomizing process, the reset spring 6 can apply a pulling force along the second direction b to the operating member 3 to assist the operating member 3 in resetting and save effort for the user. When the atomizing device 100 finishes atomizing, the operating member 3, the reset sleeve 5, and the reset spring 6 all return to their respective initial positions. At this time, the reset spring 6 is in a free state.

[0124] Specifically, as shown in Figure 9 and Figure 12 , when the atomizing device 100 is to be atomized, the user rotates the operating member 3 in the forward direction and manually drives the operating member 3 to move in the first direction a at the same time, so that the operating member 3 drives the first drive rod 221 to undergo a first movement. When the process of waiting for atomization is completed, as shown in Figure 14 , the user rotates the operating member 3 in the reverse direction. At this time, the user does not need to manually apply a force along the second direction b to the operating member 3. Under the acting force of the retraction of the reset spring 6, the reset sleeve 5 applies a force along the second direction b to the operating member 3, so that the operating member 3 drives the first drive rod 221 to undergo a second movement.

[0125] In an embodiment, as shown in Figure 1 and Figure 9 , the circumferential inner wall of the reset sleeve 5 abuts against the circumferential outer wall of the container 1. Specifically, the reset sleeve 5 includes a cylinder body 53, and the circumferential inner wall of the cylinder body 53 abuts against the circumferential outer wall of the container 1. Since the reset sleeve 5 is connected to the operating member 3 and the operating member 3 is installed in the housing 4, the reset sleeve 5 will not shake in the housing 4. In this solution, the container 1 is restricted by the reset sleeve 5 to prevent the container 1 from shaking. Further, the circumferential outer wall of the reset sleeve 5 abuts against the inner wall of the housing 4 to improve the assembly stability of the reset sleeve 5 and further ensure that the container 1 will not shake.

[0126] Among them, as shown in Figure 1 Figure 1 ​​​​​​​​​​As shown, the cylinder body 53 can be composed of a plurality of connecting columns 531, which is beneficial to reducing the weight of the reset sleeve 5. The reset sleeve 5 further includes a first annular structure 54 and a second annular structure 55. The first annular structure 54 and the second annular structure 55 are connected by the connecting columns 531. All the connecting columns 531 are arranged in a circumferential array, and the reset spring 6 is fixedly connected to the second annular structure 55. Of course, the cylinder body 53 can also be an integral annular cylinder structure.

[0127] In one embodiment, as Figure 1 , Figure 8 and Figure 10 shown, the operating member 3 is provided with a driving gear 33, and the reset sleeve 5 is provided with a driven gear 51. The driving gear 33 meshes with the driven gear 51 and the two are closely matched. Specifically, when the operating member 3 rotates, the driving gear 33 transmits the rotational force to the driven gear 51, thereby driving the reset sleeve 5 to rotate. At the same time, since the driving gear 33 and the driven gear 51 are closely matched, the operating member 3 can drive the reset sleeve 5 to move in the first direction a or the second direction b, so that the reset sleeve 5 moves synchronously with the operating member 3.

[0128] In one embodiment, as Figure 1 , Figure 8 , Figure 9 and Figure 12 shown, the operating member 3 is provided with a cap portion 34. The inner wall of the housing 4 is provided with a first abutting surface 42, and the distal end of the housing 4 is provided with a second abutting surface 43. The cap portion 34 is located outside the housing 4, and the cap portion 34 can be held by the user to operate the operating member 3.

[0129] When the operating member 3 makes a first movement, as Figure 12 shown, when the reset sleeve 5 moves to abut against the first abutting surface 42, the operating member 3 stops moving in the first direction a, and the atomizing device 100 completes the atomization to be performed, so as to limit the operating member 3 from continuing to move in the first direction a, and is used to limit the primary increase amount of the total length of the piston rod assembly 22. In each atomization step to be performed by the atomizing device 100, the total length increment of the piston rod assembly 22 is constant. In a specific embodiment, the sleeve end surface 52 of the reset sleeve 5 abuts against the first abutting surface 42, so that the operating member 3 stops moving in the first direction a.

[0130] As Figure 8 and Figure 16As shown, when the operating member 3 makes a second movement, when the operating member 3 moves until the cap portion 34 abuts against the second abutting surface 43, the operating member 3 stops moving in the second direction b, and the atomizing device 100 completes atomization, so as to limit the displacement amount of the operating member 3 in the second direction b, thereby limiting the displacement amount of the piston rod assembly 22 and the piston 21 in the second direction b, so as to ensure that the atomization dose is constant each time. In a specific embodiment, the cap end surface 341 of the cap portion 34 abuts against the second abutting surface 43, so that the operating member 3 stops moving in the second direction b.

[0131] Further, as Figure 8 shown, the circumferential outer wall of the cap portion 34 is provided with a concavo-convex structure 342 to increase the frictional force between the cap portion 34 and the user's hand and prevent slipping. Further, the concavo-convex structure 342 is annular.

[0132] In one embodiment, as Figure 8 shown, the operating portion 3 is provided with a cylinder 35, the end cap 34 is connected to one end of the cylinder 35 away from the housing 4, and the driving gear 33 is connected to the other end of the cylinder 35. The number of driving gears 33 is multiple and is evenly distributed along the circumference of the cylinder 35. The structure of the driven gear 51 matches that of the driving gear 33.

[0133] In one embodiment, as Figure 1 and Figure 9 shown, the atomizing device 100 further includes an atomizing chip 7, and the atomizing chip 7 is arranged in the outlet end of the container 1. The atomizing chip 7 is provided with a plurality of flow channels 71. When the atomizing device 100 performs liquid distribution, the liquid in the container 1 is under the extrusion of the piston 21, and when the hydraulic pressure reaches a preset value, the liquid passes through the flow channels 71 at a certain speed and forms atomized fine particles and then escapes.

[0134] In one embodiment, as Figure 6 and Figure 16 shown, a limiting column 213 is provided at one end of the piston 21 away from the piston rod assembly 22. When the atomizing device 100 completes the last use, the limiting column 213 is inserted into the outlet end of the container 1 and abuts against the atomizing chip 7 to limit the piston 21 from continuing to move in the second direction b.

[0135] In one embodiment, as Figure 1 and Figure 9 shown, the outlet end of the container 1 is provided with an annular protrusion 11, and the proximal end of the housing 4 is provided with an annular card slot (not shown in the figure). The annular protrusion 11 is snap-fitted into the annular card slot to assemble the container 1 and the housing 4 and prevent the container 1 from moving.

[0136] In one embodiment, as Figure 17 and Figure 19As shown, the atomizing device 100 further includes a mouthpiece assembly 8. The mouthpiece assembly 8 includes a mouthpiece housing 81 and a one-way valve 82. The mouthpiece housing 81 is provided with a connection port 811, an inhalation port 812, and an air intake port 813. The connection port 811 communicates with the outlet end of the container 1. The one-way valve 82 is disposed in the air intake port 813, and the inhalation port 812 is for the user to hold with the mouth. Specifically, when using the atomizing device 100, first, the user drives the first driving rod 221 to perform a first movement by operating the operating member 3, so that the atomizing device 100 completes the atomization to be performed; then, the user holds the inhalation port 812 with the mouth, and then operates the operating member 3 with the hand to drive the first driving rod 221 to perform a second movement, so that the atomizing device 100 starts to atomize. The liquid in the container 1 forms atomized fine particles via the atomization chip 7. The atomized fine particles sequentially enter the mouthpiece housing 81 via the connection port 811, and then enter the user's mouth via the inhalation port 812. And, in this process, since the inside of the mouthpiece housing 81 is in a negative pressure state, under the internal and external air pressure difference, external air enters the mouthpiece housing 81 through the one-way valve 82. In this way, by introducing air, the air can be mixed with the droplets, increasing the shearing force of the droplets to optimize the spraying effect of the droplets.

[0137] Further, as Figure 17 shown, the mouthpiece housing 81 is a tee structure, and the inhalation port 812 and the air intake port 813 are opposite in position. The air entering from the air intake port 813 can be quickly mixed with the droplets, improving the spraying effect.

[0138] Further, as Figures 17 to 19 shown, it further includes an end cap 83. The end cap 83 covers the air intake port 813. The end cap 83 is provided with a plurality of air intake holes 831. The one-way valve 82 is installed on the side of the end cap 83 facing the mouthpiece housing 81 and covers the plurality of air intake holes 831. Specifically, the side of the end cap 83 facing the mouthpiece housing 81 is provided with a mounting post 832, and all the air intake holes 831 are distributed around the mounting post 832. The one-way valve 82 is sleeved on the mounting post 832 and covers the air intake holes 831.

[0139] Further, as Figure 17As shown, the inhalation port 812 is overall flat to facilitate the user to hold it in the mouth. Further, on the outer walls of both sides of the inhalation port 812, there are respectively provided bite limit protrusions 8121. After the user holds the inhalation port 812 in the mouth, the teeth abut against the bite limit protrusions 8121. In this solution, by providing the bite limit protrusions 8121 on the outer wall of the inhalation port 812, on the one hand, when the user holds the inhalation port 812 in the mouth, the bite limit protrusions 8121 are used to ensure that the inhalation port 812 is in a proper position in the user's mouth, avoiding being too deep or too shallow, and avoiding improper position, which may affect the inhalation effect and the user's comfort; on the other hand, the bite limit protrusions 8121 are also used to prevent the nozzle assembly 8 from slipping. Of course, for the atomization device 100 with a relatively short inhalation time, the bite limit protrusions 8121 may not be provided on the inhalation port 812. For an atomization device with a relatively long inhalation time (such as atomization for 3 minutes), providing the bite limit protrusions 8121 on the inhalation port 812 is beneficial for the user to easily and labor-savingly hold the inhalation port 812.

[0140] Further, as Figure 9 shown, at the proximal end of the outer shell 4, there is provided an annular column 44. The outlet end of the container 1 is opposite to the channel position of the annular column 44. The connection port 811 of the nozzle housing 81 is hermetically connected to the annular column 44 so that the connection port 811 is communicated with the outlet end of the container 1.

[0141] In one embodiment, as Figure 9 and Figure 17 shown, when the user uses the atomization device 100, the nozzle housing 81 is placed horizontally, and the outer shell 4 is placed vertically. The outer shell 4 is located above the nozzle housing 81, and the cap portion 34 is located above the outer shell 4. In this way, it is convenient for the user to observe the cap portion 34 and smoothly operate the cap portion 34 to start the atomization and atomization process.

[0142] It should be understood that the above embodiments are all exemplary and do not cover all possible implementation manners included in the claims. Without departing from the scope of the present disclosure, various deformations and changes can also be made based on the above embodiments. Similarly, the various technical features of the above embodiments can also be arbitrarily combined to form other embodiments of the present invention that may not be clearly described. Therefore, the above embodiments only represent several implementation manners of the present invention and do not limit the protection scope of the present invention patent.

Claims

1. An atomization device, characterized in that, The atomizing device (100) includes: a container (1) for storing liquid; a power mechanism (2) including a piston (21) and a piston rod assembly (22), the piston (21) being movably installed in the container (1), and the piston rod assembly (22) at least including a first driving rod (221) and a second driving rod (222); wherein, when the first driving rod (221) undergoes a first movement, the first driving rod (221) displaces relative to the second driving rod (222) in a first direction (a) to increase the total length of the piston rod assembly (22), and the piston (21) does not displace axially, so that the atomizing device (100) is in a state to be atomized; when the first driving rod (221) undergoes a second movement, the piston rod assembly (22) as a whole synchronously displaces in a second direction (b), and the second driving rod (222) drives the piston (21) to displace in the second direction (b) so that the piston (21) penetrates into the container (1), enabling the atomizing device (100) to achieve atomization; wherein, the first direction (a) is opposite to the second direction (b).

2. The atomizing device according to claim 1, wherein The atomizing device (100) further includes an operating member (3) connected to the first driving rod (221); when the operating member (3) undergoes a first movement under an external force, it drives the first driving rod (221) to undergo a first movement; when the operating member (3) undergoes a second movement under an external force, it drives the first driving rod (221) to undergo a second movement.

3. The atomizing device according to claim 1 or 2, characterized in that, The first movement is configured to move along the first direction (a) while undergoing a first rotation; the second movement is configured to move along the second direction (b) while undergoing a second rotation; wherein, the first rotation and the second rotation are in opposite directions.

4. The atomization device according to claim 3, wherein, when the first driving rod (221) undergoes a first movement, the second driving rod (222) undergoes a first rotation and does not move along the first direction (a); when the first driving rod (221) undergoes a second movement, the piston rod assembly (22) as a whole undergoes a second movement, and the second driving rod (222) drives the piston (21) to undergo a second movement.

5. The atomizing device according to claim 4, wherein The piston rod assembly (22) further includes a third driving rod (223), and the first driving rod (221), the third driving rod (223) and the second driving rod (222) cooperate in sequence; when the first driving rod (221) has not reached the limit position of the first driving rod and undergoes a first movement, the first driving rod (221) displaces relative to the third driving rod (223) in the first direction (a), and the third driving rod (223) drives the second driving rod (222) to undergo a first rotation and does not move along the first direction (a); When the first driving rod (221) is displaced in the first direction (a) relative to the third driving rod (223) until the first driving rod (221) is at the first driving rod limit position, the first driving rod (221) can no longer be displaced in the first direction (a) relative to the third driving rod (223), and when the first driving rod (221) is in the process of the first movement again, the first driving rod (221) drives the third driving rod (223) to be displaced in the first direction (a) relative to the second driving rod (222), so that the total length of the piston rod assembly (22) is increased; When the first driving rod (221) undergoes the second movement, the first driving rod (221), the third driving rod (223) and the second driving rod (222) do not undergo relative movement with respect to each other.

6. The atomizing device according to claim 5, wherein When the third driving rod (223) is displaced in the first direction (a) relative to the second driving rod (222) until the third driving rod (223) is in the third driving rod limit position, the third driving rod (223) can no longer be displaced in the first direction (a) relative to the second driving rod (222), the total length of the piston rod assembly (22) reaches a maximum value, and the container (1) completes the last use.

7. The atomizing device according to claim 5, characterized in that, The first driving rod (221) is provided with a first sawtooth thread (2211), the second driving rod (222) is provided with a second sawtooth thread (2221), and the third driving rod (223) is provided with a third sawtooth thread (2231) and a fourth sawtooth thread (2232); The first sawtooth thread (2211) and the third sawtooth thread (2231) are threadedly matched, and the second sawtooth thread (2221) and the fourth sawtooth thread (2232) are threadedly matched.

8. The atomization device according to claim 7, wherein The third driving rod (223) is a hollow structure, which is sleeved on the outer circumference of the first driving rod (221); the second driving rod (222) is a hollow structure, which is sleeved on the outer circumference of the third driving rod (223); The third sawtooth thread (2231) is arranged on the circumferential inner wall of the third driving rod (223), and the fourth sawtooth thread (2232) is arranged on the circumferential outer wall of the third driving rod (223).

9. The atomizing device according to claim 8, wherein The atomization device (100) further comprises an operating component (3), which is connected to the first driving rod (221), and the operating component (3) is used to drive the first driving rod (221) to perform a first movement or a second movement; The operating component (3) is provided with a first clamping groove (31) and an annular groove (32) at one end facing the piston rod assembly (22), and the annular groove (32) is arranged around the first clamping groove (31); The first end (2212) of the first driving rod (221) is away from the piston (21), extends out of the third driving rod (223), and is clamped in the first clamping groove (31); Before the first use of the atomizing device (100), one end of each of the second driving rod (222) and the third driving rod (223) facing away from the piston (21) is inserted into the annular groove (32).

10. The atomization device according to claim 4, characterized in that, The power mechanism (2) further includes a pawl (23) and a ratchet wheel (24) that are engaged with each other; the pawl (23) is eccentrically provided at one end of the second driving rod (222), and the ratchet wheel (24) is coaxially connected to the piston (21); When the first driving rod (221) undergoes a first movement, the pawl (23) rotates independently of the ratchet wheel (24); When the first driving rod (221) undergoes a second movement, the second driving rod (222) pushes the piston (21) to move along the second direction (b). At the same time, the pawl (23) pushes the ratchet wheel (24) to drive the piston (21) to perform a second rotation.

11. The atomizing device according to claim 10, wherein, One end of the second driving rod (222) facing the piston (21) is provided with an eccentric shaft (2222), and the pawl (23) is mounted on the eccentric shaft (2222); and / or, the ratchet wheel (24) is clamped to the piston (21); and / or, one end of the piston (21) facing the second driving rod (222) is provided with a groove (211), at least two second clamping grooves (2111) are provided in the groove (211), at least two clamping protrusions (241) are provided on the circumferential side wall of the ratchet wheel (24), the ratchet wheel (24) is embedded in the groove (211), and the second clamping grooves (2111) are clamped to the clamping protrusions (241) one by one.

12. The atomizing device according to claim 3, characterized in that, The atomizing device (100) further includes an operating member (3) that is connected to the first driving rod (221), and the operating member (3) is used to drive the first driving rod (221) to undergo a first movement or a second movement; The atomizing device (100) further includes a housing (4), the container (1) and the power mechanism (2) are both provided in the housing (4), the operating member (3) is movably inserted into the distal port (41) of the housing (4), and the operating member (3) is in sealing cooperation with the distal port (41).

13. The atomizing device according to claim 12, characterized in that, The atomizing device (100) further includes a reset sleeve (5) and a reset spring (6), at least a part of the container (1) is located in the reset sleeve (5), two ends of the reset spring (6) are respectively connected to the reset sleeve (5) and the housing (4), and the reset sleeve (5) is connected to the operating member (3); When the operating member (3) undergoes a first movement under an external force, the reset sleeve (5) moves synchronously with the operating member (3), and the reset spring (6) is stretched; When the operating member (3) undergoes a second movement, the reset spring (6) retracts and applies a pulling force along the second direction (b) to the reset sleeve (5), and the reset sleeve (5) pulls the operating member (3) along the second direction (b).

14. The atomizing device according to claim 13, wherein, The circumferential inner wall of the reset sleeve (5) abuts against the circumferential outer wall of the container (1); And / or, the operating member (3) is provided with a driving tooth (33), the reset sleeve (5) is provided with a driven tooth (51), and the driving tooth (33) meshes with the driven tooth (51) and they are closely fitted; And / or, the operating member (3) is provided with a cap portion (34), the inner wall of the housing (4) is provided with a first abutting surface (42), and the distal end of the housing (4) is provided with a second abutting surface (43); When the operating member (3) makes a first movement, when the reset sleeve (5) moves to abut against the first abutting surface (42), the operating member (3) stops moving along the first direction (a); When the operating member (3) makes a second movement, when the operating member (3) moves to make the cap portion (34) abut against the second abutting surface (43), the operating member (3) stops moving along the second direction (b).

15. The atomizing device according to claim 1, characterized in that, The atomizing device (100) further includes an atomizing chip (7), which is arranged at the outlet end of the container (1); when the atomizing device (100) performs liquid distribution, the liquid in the container (1) is processed by the atomizing chip (7) to form atomized fine particles and then escapes; And / or, the atomizing device (100) further includes a housing (4), and the container (1) is arranged in the housing (4); a ring-shaped protrusion (11) is provided at the outlet end of the container (1), and a ring-shaped card slot is provided at the proximal end of the housing (4), and the ring-shaped protrusion (11) is snap-fitted into the ring-shaped card slot.

16. The atomizing device according to claim 1, characterized in that, The atomizing device (100) further includes a mouthpiece assembly (8), which includes: A mouthpiece housing (81), which is provided with a connection port (811), an inhalation port (812) and an air intake port (813), and the connection port (811) is communicated with the outlet end of the container (1); A one-way valve (82), which is arranged in the air intake port (813).

17. The atomizing device according to claim 16, wherein The mouthpiece assembly further includes an end cap (83), and the end cap (83) covers the air intake port (813); The end cap (83) is provided with a plurality of air intake holes (831), and the one-way valve (82) is installed on the side of the end cap (83) facing the mouthpiece housing (81) and covers the plurality of air intake holes (831).

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