Trigger assembly for nebulizer and nebulizer

Abstract

A trigger assembly (1000) for a nebulizer, and a nebulizer. The trigger assembly (1000) comprises: a first component (1010); a second component (1020), wherein the first component (1010) and the second component (1020) are configured such that the second component (1020) can move away from the first component (1010) to a preloaded position upon rotation of the second component (1020) relative to the first component (1010) in a first direction; a first elastic member (1030), configured to store energy when the second component (1020) moves away from the first component (1010); and an actuator (1040), configured to, when the second component (1020) has moved to the preloaded position, prevent the second component (1020) from leaving the preloaded position, and configured to release the second component (1020) when triggered, so that the second component (1020) moves towards the first component (1010) to a trigger position under the action of the first elastic member (1030). The nebulizer comprises the trigger assembly (1000), and the trigger assembly (1000) is configured to trigger the nebulizer to spray an atomized fluid.

Description

Trigger assembly for an atomizer and atomizer

[0001] Cross-reference to related applications

[0002] The present disclosure claims priority to Chinese Patent Application No. 202410885061.4 entitled “Trigger assembly for an atomizer and atomizer” filed on July 3, 2024, and Chinese Patent Application No. 202410885172.5 entitled “Trigger assembly for an atomizer and atomizer” filed on July 3, 2024, which are incorporated by reference in their entirety into this application. TECHNICAL FIELD

[0003] The present disclosure relates to the field of atomization technology, and in particular, to a trigger assembly for an atomizer and an atomizer. BACKGROUND

[0004] An atomizer can atomize a liquid (e.g., a medicament) into droplets. In the related art, a container in an atomizer is filled with a liquid to be atomized or sprayed, and the liquid in the container can be atomized and sprayed from a nozzle of a spray assembly in a stroke in which the container moves relative to the spray assembly. However, the triggering of such an atomizer is often not stable enough, resulting in a liquid atomization and spraying process that is not always smooth.

[0005] The methods described in this section can not necessarily be prior art methods. Unless otherwise indicated, it should not be assumed that any of the methods described in this section qualify as prior art merely by virtue of their inclusion in this section. Similarly, issues mentioned in this section should not be assumed to have been admitted to be prior art in any jurisdiction merely by virtue of their inclusion in this section.

[0006] SUMMARY

[0007] The present disclosure provides a trigger assembly for an atomizer and an atomizer to achieve reliable conversion of the trigger assembly between a preloaded position and a triggered position.

[0008] According to an aspect of the present disclosure, a trigger assembly for an atomizer is provided, the trigger assembly comprising: a first component; a second component, the first component and the second component being configured such that the second component is movable away from the first component to a preloaded position in a case where the second component rotates relative to the first component towards a first direction; a first elastic member configured to store energy in a case where the second component moves away from the first component; and an actuator configured to obstruct the second component from leaving the preloaded position in a case where the second component moves to the preloaded position, and configured to release the second component in a case where the trigger assembly is triggered, to cause the second component to move towards the first component to a triggered position under the action of the first elastic member.

[0009] According to another aspect of the present disclosure, there is provided a trigger assembly for an atomizer, the trigger assembly comprising: a first component; a second component, the first component and the second component being configured such that the second component is movable away from the first component to a pre-loaded position in the event that the second component is rotated relative to the first component in a first direction; an anti-backstop, the anti-backstop being telescopically disposed in the first component for blocking rotation of the second component in a second direction opposite to the first direction in the event that the second component is moved to the pre-loaded position; and an actuator for releasing the second component to move the second component from the pre-loaded position to a trigger position towards the first component.

[0010] According to yet another aspect of the present disclosure, there is provided an atomizer comprising a trigger assembly according to the above aspects of the present disclosure, the trigger assembly being configured to trigger the atomizer to eject an atomized fluid.

[0011] The above description is merely a summary of the application technical solutions, in order to enable more clear understanding of the technical means of the present application, and in order to enable the above and other purposes, features and advantages of the present application to be more obvious and easy to understand, the following specific embodiments of the present application are described in accordance with the content of the specification. BRIEF DESCRIPTION OF DRAWINGS

[0012] In the following description of exemplary embodiments in conjunction with the accompanying drawings, more details, features and advantages of the present disclosure are disclosed, in the drawings:

[0013] FIG. 1 is a schematic diagram illustrating a trigger assembly for an atomizer in a trigger position state according to an exemplary embodiment;

[0014] FIG. 2 is a schematic diagram illustrating a trigger assembly for an atomizer in an intermediate state according to an exemplary embodiment;

[0015] FIG. 3 is another schematic diagram illustrating a trigger assembly for an atomizer in an intermediate state according to an exemplary embodiment;

[0016] FIG. 4 is a schematic diagram illustrating a trigger assembly for an atomizer in a pre-loaded position state according to an exemplary embodiment;

[0017] FIG. 5 is another schematic diagram illustrating a trigger assembly for an atomizer in a pre-loaded position state according to an exemplary embodiment;

[0018] FIG. 6 is a schematic diagram illustrating an actuator and a button connector of a trigger assembly for an atomizer according to an exemplary embodiment;

[0019] FIG. 7 is a schematic diagram illustrating an actuator and a button connector of a trigger assembly for an atomizer mounted on a first component according to an exemplary embodiment;

[0020] FIG. 8 is a schematic diagram illustrating a back-off stopper of a trigger assembly for an atomizer according to an example embodiment;

[0021] FIG. 9 is a perspective view illustrating an atomizer according to an example embodiment;

[0022] FIG. 10 is a side view illustrating an atomizer according to an example embodiment;

[0023] FIG. 11 is a cross-sectional view illustrating the atomizer of FIG. 10 at A-A according to an example embodiment. DETAILED DESCRIPTION

[0024] In the present disclosure, the terms "first", "second", etc. used to describe various elements are not intended to limit the positional relationship, the timing relationship or the importance relationship of the elements, and such terms are only used to distinguish one element from another element. In some examples, the first element and the second element can refer to the same instance of the element, and in some cases, based on the context of the description, they can also refer to different instances.

[0025] The terms used in the description of various described examples in the present disclosure are only for the purpose of describing specific examples, and are not intended to be limiting. Unless the number of elements is specifically limited, the element can be one or more, if the number of elements is not specifically limited. As used herein, the term "plurality" means two or more, and the term "based on" should be interpreted as "at least partially based on". In addition, the terms "and / or" and "at least one of" cover any one and all possible combinations of the listed items.

[0026] In the scope of the present disclosure, "atomizer" refers to a device for atomizing a liquid. Generally, the atomizer is used to atomize a fluid (e.g., a medicinal liquid or a similar fluid) and to spray the atomized fluid to the mouth or nose of a user (e.g., a patient).

[0027] In the related art, a liquid can be sprayed by triggering the atomizer. For example, the atomizer can be triggered by a mechanical method (e.g., pressing or rotating a switch). However, the triggering of the atomizer is often not stable enough, resulting in a process of atomization and spraying of the liquid that is not always smooth.

[0028] In view of this, the present disclosure proposes a trigger assembly for an atomizer and an atomizer. In the context of the present disclosure, the "trigger assembly" refers to an assembly for controlling the triggering of an atomizer, for example, an assembly capable of controlling and / or preventing the atomizer from performing an atomization or ejection operation. The trigger assembly can be installed into the atomizer and can be linked with the push switch and / or the rotary switch of the atomizer. Here, the reliable switching of the trigger assembly between the preloaded position and the trigger position is achieved by the actuator hindering the second component from leaving the preloaded position in the case that the second component moves to the preloaded position, and releasing the second component to move towards the first component to the trigger position in the case that the actuator is triggered.

[0029] The trigger assembly according to exemplary embodiments will be described below with reference to FIGS. 1 to 7. Among them, FIG. 1 is a schematic view illustrating a trigger assembly for an atomizer according to exemplary embodiments in a trigger position state; FIGS. 2 and 3 are schematic views illustrating a trigger assembly for an atomizer according to exemplary embodiments in an intermediate state; and FIGS. 4 and 5 are schematic views illustrating a trigger assembly for an atomizer according to exemplary embodiments in a preloaded position state. In addition, FIG. 6 is a schematic view illustrating an actuator and a button connecting piece of a trigger assembly for an atomizer according to exemplary embodiments; and FIG. 7 is a schematic view illustrating an actuator and a button connecting piece of a trigger assembly for an atomizer according to exemplary embodiments installed on a first component.

[0030] In the context of the present disclosure, the "preloaded position" of the trigger assembly can refer to a position in which the liquid in the atomizer is loaded to be ready to be ejected outward (for example, loaded from the tank body to the pumping chamber), in which position the atomizer cannot autonomously perform atomization ejection without the triggering action of external force, and only when the trigger assembly is triggered by, for example, human operation (for example, pressing), the trigger assembly can be restored from the "preloaded position" to the "trigger position", that is, the liquid in the atomizer is converted from the state of being loaded to be pre-ejected to the state of being atomized and ejected. In the "trigger position", the atomizer can be operated again (for example, screwed) to be converted to the "preloaded position", so the "trigger position" can also be referred to as the initial position.

[0031] First, with reference to FIGS. 1 to 5 and 11, the trigger assembly 1000 for an atomizer includes a first component 1010, a second component 1020, a first elastic member 1030 (for the sake of simplicity of the view, the first elastic member 1030 is not shown in FIGS. 1 to 5, but is shown in FIG. 11), and an actuator 1040.

[0032] It can be seen that the second component 1020 in FIG. 1 is in a trigger position (also an initial position), the second component 1020 in FIG. 4 and FIG. 5 is in a pre-loaded position, and the second component 1020 in FIG. 2 and FIG. 3 is in an intermediate state between the trigger position and the pre-loaded position. In examples, in the case of the pre-loaded position, the drug liquid can be pumped from the storage tank into the pumping chamber located at the first component 1010 or the second component 1020; in the case of the trigger position, the drug liquid can be ejected outward from the pumping chamber through the nozzle, and accordingly, after the ejection is completed, the second component 1020 in the trigger position is in the initial position of the next action cycle, so as to be able to move to the pre-loaded position again.

[0033] The first component 1010 and the second component 1020 are configured such that in the case of rotation of the second component 1020 relative to the first component 1010 towards the first direction D1, the second component 1020 can move away from the first component 1010 to the pre-loaded position. For example, with reference to FIG. 1 to FIG. 5, starting from the position shown in FIG. 1, the second component 1020 rotates relative to the first component 1010 towards the clockwise direction in FIG. 1, and as the second component 1020 rotates, the second component 1020 gradually moves away from the first component 1010 as shown in FIG. 2 and FIG. 3; when the second component 1020 further rotates towards the clockwise direction, the second component 1020 moves to the pre-loaded position shown in FIG. 4 and FIG. 5. In examples, the rotational motion between the first component 1010 and the second component 1020 can be converted into relative movement between the two by a gear-rack mechanism or a screw mechanism.

[0034] The first elastic member 1030 is configured to store energy when the second component 1020 moves away from the first component 1010. For example, the first elastic member 1030 can be a spring or other elastic member, as long as it can store energy by elastic deformation. In examples, the first elastic member 1030 (e.g. a spring) can be arranged on the side of the second component 1020 close to the first component 1010, and when the second component 1020 moves away from the first component 1010, it stretches and deforms to store energy, and when the first elastic member 1030 rebounds, it can push the second component 1020 to the trigger position by pulling force; in the example shown in FIG. 11, the first elastic member 1030 (e.g. a spring) can be arranged on the side of the second component 1020 away from the first component 1010, and when the second component 1020 moves away from the first component 1010, it compresses and deforms to store energy, and when the first elastic member 1030 rebounds, it can push the second component 1020 to the trigger position by pushing force.

[0035] The actuator 1040 is configured to hinder the second component 1020 from leaving the pre-loaded position in the case that the second component 1020 moves to the pre-loaded position, and is configured to release the second component 1020 in the case that it is triggered, so as to make the second component 1020 move towards the first component 1010 to the triggered position under the action of the first elastic member 1030. For example, the actuator 1040 can have a surface for blocking the second component 1020, and the position of the actuator 1040 relative to the second component 1020 can change with the triggering, thereby releasing the second component 1020. In this way, reliable conversion of the trigger assembly 1000 between the pre-loaded position and the triggered position is achieved. Accordingly, the use convenience of the atomizer can be improved.

[0036] In some embodiments, as shown in FIGS. 1-5, the actuator 1040 can be disposed partially around the first component 1010 and / or the second component 1020, for example, the actuator 1040 can be connected with the first component 1010 and disposed partially around the outer periphery of the first component 1010; or the actuator 1040 can be connected with the second component 1020 and disposed partially around the outer periphery of the second component 1020; or the actuator 1040 can be connected with both the first component 1010 and the second component 1020 and disposed partially around both. With further reference to FIGS. 5 and 6, the actuator 1040 includes a bearing portion 1042 extending radially inward from a main body 1041 of the actuator 1040. For example, the main body 1041 of the actuator 1040 can have a generally annular shape, such that its inner periphery can substantially surround the first component 1010 or the second component 1020 having a generally cylindrical outer surface. The bearing portion 1042 of the actuator 1040 extends radially inward from the annular main body 1041 to the annular interior.

[0037] As can be seen from FIGS. 1-5, during the rotation of the second component 1020 relative to the first component 1010, since the actuator 1040 is disposed around the periphery of the first component 1010 and / or the second component 1020, it will not interfere with the rotation of the second component 1020, on the contrary, with the rotation of the second component 1020, the actuator 1040 will slide relative to the outer peripheral surface of the second component 1020. When the second component 1020 moves to the pre-loaded position as shown in FIGS. 4 and 5, the radially inwardly extending bearing portion 1042 of the actuator 1040 is closer to the inside in the radial direction relative to the main body 1041, so as to be able to abut against the second component 1020, thereby hindering the second component 1020 from leaving the pre-loaded position. For example, the upper surface of the bearing portion 1042 in FIG. 5 abuts against the lower surface of a portion of the second component 1020, thereby preventing the second component 1020 from moving further downward to leave the pre-loaded position.

[0038] In some embodiments, further referring to FIGS. 4 and 5, the actuator 1040 can be configured such that when the second component 1020 is disengaged from the first component 1010, the second component 1020 can just abut against the bearing portion 1042 of the actuator 1040. For example, the actuator 1040 can be configured as described above by setting the size of the body 1041 of the actuator 1040 (or the position of the bearing portion 1042 of the actuator 1040). In an example, the actuator 1040 can be connected with the first component 1010, and the position of the bearing portion 1042 of the actuator 1040 can be set at the position where the second component 1020 just disengages from the first component 1010. Thus, when the second component 1020 is disengaged from the first component 1010, the second component 1020 is smoothly abutted by the bearing portion 1042, thereby achieving a smooth transition of the second component 1020 from the intermediate state to the preloaded state, without causing the liquid to be ejected in a small amount due to a non-smooth transition.

[0039] In some embodiments, the bearing portion 1042 can be configured to disengage from the second component 1020 to release the second component 1020 when the actuator 1040 is triggered. For example, the actuator 1040 can be configured as described above by setting the size of the bearing portion 1042 of the actuator 1040. In an example, continuing to refer to FIGS. 1 to 5, the bearing portion 1042 can not necessarily extend inwardly too much, as long as the abutting requirement of the second component 1020 can be met, so that when it is needed to make the second component 1020 transition from the preloaded position to the triggered position, the second component 1020 can be released by slightly moving the position of the bearing portion 1042 (for example, slightly moving the bearing portion 104 outwardly in the radial direction in FIG. 5).

[0040] In some embodiments, as shown in FIG. 4, the trigger assembly 1000 can further include a second elastic member 1050, which is mechanically coupled with the actuator 1040, and the actuator 1040 moves to the position where the bearing portion 1042 abuts against the second component 1020 under the action of the second elastic member 1050 when the second component 1020 moves to the preloaded position.

[0041] For example, the second elastic member 1050 can be a spring or other elastic member, as long as it can store energy by elastic deformation. In an example, the second elastic member 1050 (for example, a spring) can be directly or indirectly connected with the actuator 1040, as long as it can be compressed or stretched by the actuator 1040 to generate deformation, and can promote the actuator 1040 to move to the position where the bearing portion 1042 abuts against the second component 1020 by elastic force when triggered. In an example, the second elastic member 1050 can be arranged inside the first component 1010.

[0042] In some embodiments, as shown in FIGS. 2 and 3, the actuator 1040 is abutted against the sidewall of the second component 1020 under the action of the second elastic member 1020 before the second component 1020 is moved to the preloaded position. Thus, once the second component 1020 is moved to the preloaded position, the actuator 1040 abutting against the inner wall thereof can be quickly moved further radially inward, so as to make the bearing portion 1042 abut against the second elastic member 1020.

[0043] In some embodiments, as shown in FIG. 4, one end of the second elastic member 1050 is coupled with the actuator 1040 through a button connecting member 1060, and the other end of the second elastic member 1050 abuts against the first component 1010. For example, the first component 1010 can be internally provided with a recess for accommodating the second elastic member 1050, and the second elastic member 1050 is arranged between the button connecting member 1060 and the recess. In addition, the button connecting member 1060 can be connected with a button of the atomizer (the button of the atomizer covers the button connecting member in FIG. 5), for example, and a user can press the button, and then press the button connecting member 1060, so as to realize the operation of the actuator 1040. As shown in FIG. 6, the button connecting member 1060 can be provided with a connecting groove 1061, and the actuator 1040 can have a connecting rod 1047 (shown in FIG. 5) inserted into the connecting groove, and the connecting rod can be pivoted in the connecting groove.

[0044] In some embodiments, with continued reference to FIG. 6, the actuator 1040 can be configured in the shape of a curved arm, the curved arm is arranged around the first component 1010 and / or the second component 1020, and a first end portion 1043 (i.e., the end portion away from the button connecting member 1060 in FIG. 6) of the curved arm is used to hinder the second component 1020 from leaving the preloaded position.

[0045] In some embodiments, with continued reference to Figure 6, a second end 1044 of the actuator 1040 opposite the first end 1043 is movably connected with the button link 1060, and a connection point 1045 between the first end 1043 and the second end 1044 of the actuator 1040 is pivotably connected to the first component 1010 and / or the second component 1020, such that the actuator 1040 can be caused to pivot about the connection point 1045 by operating the button link 1060. For example, in Figure 7, the second component is hidden, and it can be seen that the second end 1044 is movably connected with the button link 1060, and the connection point 1045 is pivotably connected to a shaft on the first component 1010, such that when a user presses the button, and thus the button link 1060, the second end 1044 of the actuator 1040 moves radially inward (toward the first component 1010), causing the actuator 1040, which is shaped like a curved arm, to rotate about its own connection point 1045, whereby the first end 1043 will move radially outward (away from the first component 1010).

[0046] It will be appreciated that the connection point 1045 of the actuator 1040 can also be pivotably connected to the second component 1020, which is not described again here.

[0047] In some embodiments, the first component 1010 can include a first helical portion 1011, and the second component 1020 can include a second helical portion 1021, the helical end face of the second helical portion 1021 being configured to mate with the helical end face of the first helical portion 1011. Further, the first helical portion 1011 and the second helical portion 1021 are configured such that the second component 1020 can be moved to the preloaded position in the event that the second component 1020 is rotated relative to the first component 1010 in a first direction D1 (e.g., the clockwise direction in Figures 1-5) along the mating first helical portion 1011 and second helical portion 1021. In other words, the helical end faces of both the first helical portion 1011 and the second helical portion 1021 can be combined, e.g., with the high of one helical portion combining with the low of the other helical portion, and both can enable relative rotation during which (e.g., from Figures 1-3 to Figure 5), the second helical portion 1021 can be gradually moved away from the first component 1010 due to the helical end faces, thereby gradually reaching the preloaded position.

[0048] In some embodiments, referring to FIG. 4 or FIG. 5, the first spiral part 1011 and / or the second spiral part 1021 can be configured to disengage the second spiral part 1021 from the first spiral part 1011 in the case that the second component 1020 is moved to the pre-loaded position. The disengagement of the second spiral part 1021 from the first spiral part 1011 means that no contact occurs between the two, so that when the second component 1020 is released, it can smoothly return to the initial position, i.e. the trigger position.

[0049] In some embodiments, the actuator 1040 can be configured to abut the second spiral part 1021 to hinder the second component 1020 from leaving the pre-loaded position when the second spiral part 1021 is disengaged from the first spiral part 1011. Referring to FIG. 4 or FIG. 5, it can be seen that at this time the second spiral part 1021 has been disengaged from the first spiral part 1011, and in the example, at this time the liquid in the nebulizer has been fully loaded, in the pre-loaded state. In order to maintain the trigger assembly 1000 in this pre-loaded state, the second spiral part 1021, which has been disengaged from the first spiral part 1011, is abutted by the actuator 1040, for example the carrier part 1042 of the actuator 1040.

[0050] In some embodiments, referring to FIG. 1, in the case that the second component 1020 is moved to the trigger position (initial position), the spiral end face of the second spiral part 1021 (as seen in FIG. 5) is fitted with the spiral end face of the first spiral part 1011 (as seen in FIG. 5). When the actuator 1040 is triggered, the actuator 1040 no longer abuts the second spiral part 1021 of the second component 1020, and the second component 1020 can return to the trigger position (initial position) under the action of the first elastic member 1030, at this time the spiral end face of the second spiral part 1021 is fitted with the spiral end face of the first spiral part 1011, and a relatively complete columnar shape can be formed, reducing the space occupation.

[0051] In some embodiments, the first spiral part includes two first spiral parts 1011 which are centrally symmetrical, the second spiral part includes two second spiral parts 1021 which are centrally symmetrical, and the actuator 1040 includes a first actuator 1441 and a second actuator 1442 which are arranged on the two circumferential sides of the first component 1010 and / or the second component 1020, and the first actuator 1441 and the second actuator 1442 are respectively used to abut a corresponding one of the two second spiral parts. As shown in FIG. 7, the first actuator 1441 and the second actuator 1442 are respectively arranged on the two circumferential sides of the first component 1010, and when the second component 1020 is in the pre-loaded position, the first actuator 1441 and the second actuator 1442 can respectively carry the two second spiral parts 1021, thereby improving the carrying stability of the second component 1020.

[0052] In some embodiments, as shown in FIG. 6, the actuator 1040 can include a limit protrusion 1046 disposed adjacent to the bearing portion 1042 and protruding from the bearing surface of the bearing portion 1042. The limit protrusion 1046 is configured to block the rotation of the second component 1020 towards the first direction D1 when the bearing portion 1042 abuts the second helical portion 1021. As shown in FIG. 4, when the second component 1020 is in the preloaded position, the bearing portion 1042 abuts the second helical portion 1021, and the limit protrusion 1046 blocks the rotation of the second component 1020 towards the first direction D1 (the clockwise direction in FIG. 4), thereby preventing the undesired rotation between the second component 1020 and the first component 1010 towards the first direction D1.

[0053] In some embodiments, the end of the second helical portion 1021 of the second component 1020 is provided with a limit step 1022, and the limit protrusion 1046 of the actuator 1040 blocks the rotation of the second component 1020 towards the first direction D1 by abutting the limit step 1022.

[0054] In some embodiments, the trigger assembly 1000 can further include a retreat prevention stopper 1070 telescopically disposed in the first component 1010 and configured to block the rotation of the second component 1020 towards the second direction D2 opposite to the first direction D1 when the second component 1020 is moved to the preloaded position. Referring first to FIG. 5, when the second component 1020 is in the preloaded position, the retreat prevention stopper 1070 is in the state of extending out of the first component 1010 and thus is higher than the highest point of the first component 1010, thereby blocking the rotation of the second component 1020 towards the second direction D2 (the counterclockwise direction in FIG. 5) opposite to the first direction D1. Referring next to FIG. 3, when the second component 1020 is further rotated relative to the first component 1010 towards the first direction D1 (the clockwise direction), the retreat prevention stopper 1070 is in the state of retracting into the first component 1010 and thus does not affect the rotation of the second component 1020 towards the first direction D1.

[0055] Referring to FIG. 8, FIG. 8 is a schematic diagram illustrating an anti-backup stopper of a trigger assembly for an atomizer, according to an example embodiment. In some embodiments, the anti-backup stopper 1070 can include a beveled portion 1071 configured to enable the anti-backup stopper 1070 to at least partially retract into the first component 1010 under the pressing action of the second component 1020. For example, the beveled portion 1071 can generally match the helical end face of the second helical portion 1021 of the second component 1020, and the beveled portion 1071 can also have a generally helical end face. The anti-backup stopper 1070 at least partially retracts into the first component 1010 as long as the anti-backup stopper 1070 does not hinder the rotation of the second component 1020 towards the first direction D1.

[0056] In some embodiments, the anti-backup stopper 1070 can be configured to at least partially extend from the first component 1010 during the disengagement of the second component 1020 from the preloaded position, such that a straight portion 1072 of the anti-backup stopper 1070 opposite the beveled portion 1071 is able to block the rotation of the second component 1020 towards the second direction D2. For example, when the second component 1020 transitions from the position shown in FIG. 3 to the position shown in FIG. 5, the anti-backup stopper 1070 at least partially extends from the first component 1010 such that its straight portion 1072 blocks the rotation of the second component 1020 towards the second direction D2 (counterclockwise direction).

[0057] In some embodiments, as shown in FIG. 8, the trigger assembly 1000 can further include an anti-backup spring 1080, and the first component 1010 can further include a groove for receiving the anti-backup stopper 1080, and the anti-backup spring 1080 is disposed between the anti-backup stopper 1070 and the groove to provide a spring force for the anti-backup stopper 1070 to extend out of the groove. When the second component 1020 no longer presses the anti-backup stopper 1070, the anti-backup stopper 1070 is able to extend from the first component 1010 under the spring force of the anti-backup spring 1080 to block the rotation of the second component 1020 towards the second direction D2.

[0058] In some embodiments, further referring to FIG. 8, the anti-backup stopper 1070 can include a beveled chamfer 1073, which can be located at a first end of the beveled portion 1071. During the rotation and downward pressing of the second component 1020 on the anti-backup stopper 1070, the first end of the beveled portion 1071 is the last part to contact the second component 1020 relative to other parts of the beveled portion 1071. Thus, the beveled chamfer 1073 helps to provide a smooth transition when the second component 1020 disengages from the anti-backup stopper 1070, thereby reducing jamming.

[0059] In some embodiments, further referring to FIG. 8, the anti-backoff stopper 1070 can include a step portion 1074, which can be located at the second end of the ramp portion 1071. During the rotation and downward pressing of the second component 1020 against the anti-backoff stopper 1070, the second end of the ramp portion 1071 first contacts the second component 1020 relative to other parts of the ramp portion 1071. Therefore, the step portion 1074 helps prevent the side edge 1075 of the anti-backoff stopper 1070 from being too high to undesirably block the second component, and accordingly provides a certain installation tolerance for the amount of extension of the anti-backoff stopper 1070 from the first component 1010.

[0060] Further, the operation of some nebulizers still has inconvenience, especially in the case where the user needs multiple operations to complete the nebulization spraying, and it is likely to occur misoperation. For example, when the nebulizer is set to require the user to perform a rotation operation to complete the spraying, the user can perform an undesirable reverse rotation or excessive rotation on the nebulizer. These misoperations can cause the components in the nebulizer to interfere or cause inaccurate nebulization doses.

[0061] Therefore, by providing an anti-backoff stopper that can be extended and retracted, the second component can be blocked from being rotated in the reverse direction undesirably when it moves to the pre-loaded position. Referring to FIGS. 1-5, 8, and 11, the trigger assembly 1000 for the nebulizer includes a first component 1010, a second component 1020, an actuator 1040, and an anti-backoff stopper 1070. As can be seen, the second component 1020 in FIG. 1 is in a triggered position (also the initial position), the second component 1020 in FIGS. 4 and 5 is in a pre-loaded position, and the second component 1020 in FIGS. 2 and 3 is in an intermediate state between the triggered position and the pre-loaded position. In an example, in the pre-loaded position, the drug liquid can be pumped from the reservoir to the pumping chamber located at the first component 1010 or the second component 1020; in the triggered position, the drug liquid can be sprayed outward from the pumping chamber through the nozzle, and accordingly, after the spraying is completed, the second component 1020 in the triggered position is in the initial position of the next action cycle, so that it can move to the pre-loaded position again.

[0062] The first component 1010 and the second component 1020 are configured such that the second component 1020 is movable away from the first component 1010 to a pre-loaded position in the case that the second component 1020 is rotated relative to the first component 1010 towards the first direction D1. For example, with reference to Figures 1 to 5, starting from the position shown in Figure 1, the second component 1020 is rotated relative to the first component 1010 towards the clockwise direction in Figure 1, and as the second component 1020 is rotated, the second component 1020 gradually moves away from the first component 1010 as shown in Figures 2 and 3; when the second component 1020 is further rotated towards the clockwise direction, the second component 1020 moves to the pre-loaded position shown in Figures 4 and 5. In examples, the rotational movement between the first component 1010 and the second component 1020 can be converted to relative movement between the two by a rack and pinion mechanism or a screw mechanism.

[0063] The actuator 1040 is configured to release the second component 1020 to move the second component 1020 from the pre-loaded position towards the first component 1010 to the triggered position.

[0064] The anti-backstop 1070 is telescopically arranged in the first component 1010 and is configured to block rotation of the second component 1020 towards a second direction D2 opposite to the first direction D1 in the case that the second component 1020 is moved to the pre-loaded position. First, with reference to Figure 5, when the second component 1020 is in the pre-loaded position, the anti-backstop 1070 is in an extended state out of the first component 1010, and thus is higher than the highest point of the first component 1010, thereby blocking rotation of the second component 1020 towards the second direction D2 opposite to the first direction D1 (the counterclockwise direction in Figure 5). Next, with reference to Figure 3, when the second component 1020 is further rotated relative to the first component 1010 towards the first direction D1 (the clockwise direction), the anti-backstop 1070 is in a retracted state into the first component 1010, and thus does not affect rotation of the second component 1020 towards the first direction D1. In this way, rotation of the second component 1020 towards the undesired reverse direction can be blocked in the case that the second component 1020 is moved to the pre-loaded position.

[0065] The two aspects of the present disclosure provide an atomizer. The atomizer comprises the trigger assembly 1000 of the present disclosure, which is configured to trigger the atomizer to spray an atomized fluid.

[0066] The atomizer of the present disclosure will be further described below with reference to Figures 9 to 11. Figure 9 is a perspective view illustrating an atomizer according to an example embodiment; Figure 10 is a side view illustrating the atomizer according to an example embodiment; and Figure 11 is a cross-sectional view illustrating the atomizer in Figure 10 at the A-A cross-section according to an example embodiment.

[0067] As shown in FIGS. 9-11, the atomizer 2000 can include an upper housing 2010, a lower housing 2020, a button 2030 disposed in the upper housing portion, and a delivery tube seat 2040 disposed in the lower housing 2020.

[0068] In some embodiments, the first component 1010 can constitute the upper housing 2010 of the atomizer 2000, the second component 1020 constitutes the delivery tube seat 2040 of the atomizer 2000, and the delivery tube seat 2040 is configured to be rotatable with the rotation of the lower housing 2020 of the atomizer 2000. For example, the upper housing 2010 and the lower housing 2020 can be rotatable relative to each other, and the delivery tube seat 2040 is coupled with the lower housing 2020, by rotating the lower housing 2020 relative to the upper housing 2010, the delivery tube seat 2040 can be rotated relative to the upper housing 2010, in other words, by rotating the lower housing 2020 relative to the upper housing 2010, the second component 1020 of the trigger assembly 1000 disposed in the atomizer 2000 can be rotated relative to the first component 1010, and the second component 1020 moves away from the first component 1010 to a preloaded position. In this process, a portion of the liquid stored in the tank of the atomizer 2000 can be pumped into the pumping chamber of the atomizer 2000, for example, for atomization injection.

[0069] In some embodiments, when the user presses the button 2030, the button 2030 can trigger the actuator 1040 through, for example, the button connecting piece 1060, and thus the actuator 1040 can release the delivery tube seat 2040 to move the delivery tube seat 2040 toward the upper housing 2010 under the action of the first elastic piece 1030 to a trigger position. In this process, the volume of the pumping chamber will decrease under the extrusion of the delivery tube seat 2040, and the pressure in the pumping chamber will increase, so as to atomize and inject the liquid in the pumping chamber through the outlet above the upper housing 2010.

[0070] In this way, the use convenience of the atomizer is improved.

[0071] In some embodiments, the atomizer 2000 can include a main rotating body 2050 located inside the lower housing 2020 and disposed outside the delivery tube seat 2040. The main rotating body 2050 can transmit the rotation of the lower housing 2020 to the delivery tube seat 2040, in other words, when the main rotating body 2050 rotates, the delivery tube seat 2040 also rotates; in addition, when the delivery tube seat 2040 is released to move toward the upper housing 2010, the main rotating body 2050 does not move upward with the delivery tube seat 2040.

[0072] In an example, both the upper housing 2010 and the main rotor 2050 can be utilized to longitudinally position the actuator 1040. For example, referring to FIG. 7, one end face of the actuator can be disposed against the rib 1012 of the first component 1010. Returning to FIG. 11, accordingly, it can be seen that the lower end face of the rib of the upper housing 2010 is against the upper end face of the actuator 1040. Further, referring again to FIG. 7, the actuator can have a longitudinal positioning protrusion 1048, returning to FIG. 11, accordingly, it can be seen that the upper end face of a portion of the main rotor 2050 can be against the lower end face of the longitudinal positioning protrusion 1048 of the actuator 1040. Thus, both the upper housing 2010 and the main rotor 2050 can be utilized to longitudinally position the actuator 1040.

[0073] It should be understood that, in the specification, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship or dimensions based on the orientation or positional relationship or dimensions shown in the drawings, and the use of these terms is only for the convenience of description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application.

[0074] In addition, the terms "first", "second", "third" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second", "third" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0075] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "mounting" and the like should be understood broadly, for example, it can be a mounted connection, or a detachable connection, or integrated; it can be a mechanical connection, or an electrical connection, or a communication; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0076] In this application, unless otherwise explicitly specified and limited, "on" or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "over" of a first feature to a second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is horizontally higher than the second feature. "Under", "below" and "underneath" of a first feature to a second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the first feature is horizontally lower than the second feature.

[0077] Although the disclosure has been illustrated and described in detail in the drawings and foregoing description, such illustration and description is to be considered illustrative or schematic and not restrictive; the disclosure is not limited to the disclosed embodiments. Variations to the disclosed embodiments can become apparent to those skilled in the art from a study of the drawings, the disclosure and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps not listed in the claims, the word "a" or "an" does not exclude a plurality, the term "multiple" means two or more, and the term "based on" should not be construed as being restricted to the stated value or values. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

[0078] Some exemplary aspects of the disclosure will be described below.

[0079] Aspect 1, a trigger assembly for an atomizer, comprising: a first component; a second component, wherein the first component and the second component are configured such that the second component can be moved away from the first component to a pre-loaded position in the case that the second component is rotated relative to the first component towards a first direction; a first elastic member configured to store energy when the second component is moved away from the first component; and an actuator configured to block the second component from leaving the pre-loaded position in the case that the second component is moved to the pre-loaded position, and configured to release the second component to move towards the first component to a trigger position under the action of the first elastic member in the case that the trigger assembly is triggered.

[0080] Aspect 2, the trigger assembly according to aspect 1, wherein the actuator is partially arranged around the first component and / or the second component, and the actuator comprises a bearing portion extending radially inward from a main body of the actuator, the bearing portion being used to abut against the second component to block the second component from leaving the pre-loaded position.

[0081] Aspect 3, the trigger assembly according to aspect 2, wherein the actuator is configured to abut against the carrier portion of the actuator when the second component is disengaged from the first component.

[0082] Aspect 4, the trigger assembly according to aspect 2, wherein the carrier portion is configured to disengage from the second component to release the second component in the event that the actuator is triggered.

[0083] Aspect 5, the trigger assembly according to aspect 2, further comprising a second elastic member coupled with the actuator, wherein the actuator is moved to a position in which the carrier portion of the actuator abuts against the second component under the action of the second elastic member when the second component is moved to the pre-loaded position.

[0084] Aspect 6, the trigger assembly according to aspect 5, wherein the actuator is abutted against a side wall of the second component under the action of the second elastic member before the second component is moved to the pre-loaded position.

[0085] Aspect 7, the trigger assembly according to aspect 5, further comprising a button connecting member, wherein one end of the second elastic member is coupled with the actuator through the button connecting member, and the other end of the second elastic member is abutted against the first component.

[0086] Aspect 8, the trigger assembly according to any one of aspects 1 to 7, wherein the actuator is configured in the shape of a curved arm arranged around the first component and / or the second component, and wherein a first end portion of the curved arm is used to hinder the second component from leaving the pre-loaded position.

[0087] Aspect 9, the trigger assembly according to aspect 8, further comprising a button connecting member, wherein a second end portion of the actuator opposite to the first end portion is movably connected with the button connecting member, and wherein a connecting portion between the first end portion and the second end portion of the actuator is pivotably connected to the first component and / or the second component, so that the actuator is able to be pivoted around the connecting portion by operating the button connecting member.

[0088] Aspect 10, the trigger assembly according to aspect 2, wherein the first component comprises a first helical portion, the second component comprises a second helical portion, a helical end face of the second helical portion is able to cooperate with a helical end face of the first helical portion, and wherein the first helical portion and the second helical portion are configured such that the second component is able to be moved to the pre-loaded position in the event that the second component is rotated relative to the first component along the cooperating first helical portion and second helical portion towards the first direction.

[0089] Aspect 11, the trigger assembly according to aspect 10, wherein the first spiral portion and / or the second spiral portion is configured to disengage from the second spiral portion when the second component moves to the pre-loaded position.

[0090] Aspect 12, the trigger assembly according to aspect 11, wherein the actuator is configured to abut against the second spiral portion to hinder the second component from leaving the pre-loaded position when the second spiral portion disengages from the first spiral portion.

[0091] Aspect 13, the trigger assembly according to aspect 10, wherein a spiral end surface of the second spiral portion abuts against a spiral end surface of the first spiral portion when the second component moves to the trigger position.

[0092] Aspect 14, the trigger assembly according to aspect 10, wherein the first spiral portion comprises two first spiral portions that are centrally symmetrical, the second spiral portion comprises two second spiral portions that are centrally symmetrical, and wherein the actuator comprises a first actuator and a second actuator that are disposed on two opposite sides of the first component and / or the second component, the first actuator and the second actuator are respectively configured to abut against a corresponding one of the two second spiral portions.

[0093] Aspect 15, the trigger assembly according to aspect 10, wherein the actuator comprises a limiting protrusion that is disposed adjacent to the carrier portion and protrudes from a carrier surface of the carrier portion, the limiting protrusion is configured to block the rotation of the second component towards the first direction when the carrier portion abuts against the second spiral portion.

[0094] Aspect 16, the trigger assembly according to aspect 15, wherein an end of the second spiral portion of the second component is provided with a limiting step, the limiting protrusion of the actuator blocks the rotation of the second component towards the first direction by abutting against the limiting step.

[0095] Aspect 17, the trigger assembly according to any one of aspects 1 to 7, further comprising an anti-backstop that is telescopically disposed in the first component, the anti-backstop is configured to block the rotation of the second component towards a second direction opposite to the first direction when the second component moves to the pre-loaded position.

[0096] Aspect 18, the trigger assembly according to aspect 17, wherein the anti-backstop comprises a ramped portion that is configured to be at least partially retracted into the first component under the extrusion of the second component.

[0097] Aspect 19, the trigger assembly according to aspect 18, wherein the anti-backup stopper is configured to at least partially extend out of the first component during the second component moving into the pre-loaded position, such that a straight surface portion of the anti-backup stopper opposite to the inclined surface portion is able to block the rotation of the second component towards the second direction.

[0098] Aspect 20, the trigger assembly according to aspect 17, further comprising an anti-backup resilient member, wherein the first component comprises a groove for receiving the anti-backup stopper, and wherein the anti-backup resilient member is disposed between the anti-backup stopper and the groove for providing an elastic force for the anti-backup stopper to extend out of the groove.

[0099] Aspect 21, a trigger assembly for an atomizer, comprising: a first component; a second component, wherein the first component and the second component are configured such that the second component is able to move away from the first component to a pre-loaded position in case the second component rotates relative to the first component towards a first direction; an anti-backup stopper telescopically disposed in the first component for blocking the rotation of the second component towards a second direction opposite to the first direction in case the second component moves to the pre-loaded position; and an actuator for releasing the second component to move the second component from the pre-loaded position towards the first component to a triggered position.

[0100] Aspect 22, the trigger assembly according to aspect 21, further comprising a first resilient member configured to store energy when the second component moves away from the first component, and wherein the actuator is configured to hinder the second component from leaving the pre-loaded position in case the second component moves to the pre-loaded position, and configured to release the second component to move the second component towards the first component to the triggered position under the action of the first resilient member in case the trigger assembly is triggered.

[0101] Aspect 23, the trigger assembly according to aspect 21 or 22, wherein the anti-backup stopper comprises an inclined surface portion configured to be at least partially retracted into the first component under the pressing action of the second component.

[0102] Aspect 24, the trigger assembly according to aspect 23, wherein the anti-backup stopper is configured to partially extend out of the first component during the second component moving into the pre-loaded position, such that a straight surface portion of the anti-backup stopper opposite to the inclined surface portion is able to block the rotation of the second component towards the second direction.

[0103] Aspect 25, the trigger assembly of aspect 23, further comprising an anti-backup resilient member, wherein the first component comprises a groove for receiving the anti-backup stopper, and wherein the anti-backup resilient member is disposed between the anti-backup stopper and the groove for providing a spring force for the anti-backup stopper to protrude out of the groove.

[0104] Aspect 26, the trigger assembly of aspect 23, wherein the anti-backup stopper comprises a chamfered bevel at a first end of the beveled portion that is last to contact the second component.

[0105] Aspect 27, the trigger assembly of aspect 23, wherein the anti-backup stopper comprises a stepped portion at a second end of the beveled portion that is first to contact the second component.

[0106] Aspect 28, the trigger assembly of aspect 21 or 22, wherein the actuator is partially disposed around the first component and / or the second component, and the actuator comprises a carrier portion extending radially inward from a main body of the actuator, the carrier portion for abutting the second component to impede the second component from moving away from the preloaded position.

[0107] Aspect 29, the trigger assembly of aspect 28, wherein the actuator comprises a stop protrusion disposed adjacent to the carrier portion and protruding from a carrier surface of the carrier portion, the stop protrusion for blocking rotation of the second component in the first direction when the carrier portion abuts the second component.

[0108] Aspect 30, the trigger assembly of aspect 29, wherein the second component is provided with a stop step, and the stop protrusion of the actuator blocks rotation of the second component in the first direction by abutting the stop step.

[0109] Aspect 31, the trigger assembly of aspect 21 or 22, wherein the actuator is configured in a shape of a curved arm disposed around the first component and / or the second component, and wherein a first end of the curved arm is for impeding the second component from moving away from the preloaded position.

[0110] Aspect 32, the trigger assembly of aspect 31, wherein the actuator comprises a stop protrusion protruding from the first end of the curved arm for blocking rotation of the second component in the first direction when the second component is moved to the preloaded position.

[0111] Aspect 33, the trigger assembly of Aspect 31, further comprising a button link, wherein a second end of the actuator opposite the first end is movably connected with the button link, and wherein a connection between the first end and the second end of the actuator is pivotably connected to the first part and / or the second part such that the actuator is pivotable about the connection by operating the button link.

[0112] Aspect 34, the trigger assembly of Aspect 21 or 22, wherein the first part comprises a first helical portion, the second part comprises a second helical portion, a helical end face of the second helical portion is mateable with a helical end face of the first helical portion, and wherein the first and second helical portions are configured such that the second part is movable to the pre-loaded position upon rotation of the second part relative to the first part in the first direction along the first and second helical portions.

[0113] Aspect 35, the trigger assembly of Aspect 34, wherein the first and / or second helical portions are configured such that the second helical portion disengages the first helical portion upon movement of the second part to the pre-loaded position.

[0114] Aspect 36, the trigger assembly of Aspect 35, wherein the actuator is configured to abut the second helical portion to obstruct movement of the second part away from the pre-loaded position when the second helical portion disengages the first helical portion.

[0115] Aspect 37, the trigger assembly of Aspect 28, wherein the carrier portion is configured to disengage the second part to release the second part upon the actuator being triggered.

[0116] Aspect 38, the trigger assembly of Aspect 28, further comprising a second resilient member coupled with the actuator, wherein the actuator is moved to a position in which the carrier portion abuts the second part under action of the second resilient member upon movement of the second part to the pre-loaded position.

[0117] Aspect 39, the trigger assembly of Aspect 34, wherein the helical end face of the second helical portion is in abutment with the helical end face of the first helical portion upon movement of the second part to the trigger position.

[0118] Aspect 40, the trigger assembly of Aspect 34, wherein the first spiral portion comprises two first spiral portions that are centrosymmetric, the second spiral portion comprises two second spiral portions that are centrosymmetric, and wherein the actuator comprises a first actuator and a second actuator disposed on two opposite sides of the first component and / or the second component, the first actuator and the second actuator are configured to abut a respective one of the two second spiral portions, respectively.

[0119] Aspect 41, an atomizer comprising the trigger assembly of any one of Aspects 1 to 40, the trigger assembly being configured to trigger the atomizer to spray an atomized fluid.

[0120] Aspect 42, the atomizer of Aspect 41, wherein the first component is configured as an upper housing of the atomizer, the second component is configured as a delivery tube seat of the atomizer, and wherein the delivery tube seat is configured to be rotatable with a rotation of a lower housing of the atomizer.

Claims

1. A trigger assembly for an atomizer, comprising: a first component; a second component, wherein the first and second components are configured such that the second component is movable away from the first component to a pre-loaded position upon rotation of the second component relative to the first component in a first direction; a first resilient member configured to store energy upon movement of the second component away from the first component; and an actuator configured to block the second component from leaving the pre-loaded position upon movement of the second component to the pre-loaded position, and configured to release the second component upon being triggered to move the second component toward the first component to a triggered position under the action of the first resilient member.

2. The trigger assembly of claim 1, wherein, the actuator is disposed partially around the first and / or second components, and the actuator includes a carrier portion extending radially inward from a body of the actuator, the carrier portion for abutting the second component to block the second component from leaving the pre-loaded position.

3. The trigger assembly of claim 2, wherein, the actuator is configured such that the second component abuts the carrier portion of the actuator when the second component is disengaged from the first component.

4. The trigger assembly of claim 2, wherein, the carrier portion is configured to disengage the second component to release the second component upon the actuator being triggered.

5. The trigger assembly of claim 2, further comprising a second resilient member coupled with the actuator, wherein, the actuator is moved to a position in which the carrier portion of the actuator abuts the second component under the action of the second resilient member upon movement of the second component to the pre-loaded position.

6. The trigger assembly of claim 5, wherein, the actuator is abutted against a sidewall of the second component under the action of the second resilient member before the second component is moved to the pre-loaded position.

7. The trigger assembly of claim 5, further comprising a button connector, wherein, one end of the second resilient member is coupled to the actuator via the button link, and the other end of the second resilient member abuts the first component.

8. The trigger assembly of any of claims 1-7, wherein, the actuator is configured in the shape of a curved arm disposed around the first and / or second components, and wherein a first end portion of the curved arm is for blocking the second component from leaving the pre-loaded position.

9. The trigger assembly of claim 8, further comprising a button connector, wherein, a second end portion of the actuator opposite the first end portion is movably connected to the button link, and wherein a connection portion between the first end portion and the second end portion of the actuator is pivotably connected to the first and / or second components such that the actuator is pivotable about the connection portion by operating the button link.

10. The trigger assembly of claim 2, wherein, the first component includes a first helical portion, the second component includes a second helical portion, a helical end face of the second helical portion is mateable with a helical end face of the first helical portion, and wherein the first and second helical portions are configured such that the second component is movable to the pre-loaded position upon rotation of the second component relative to the first component in the first direction along the first and second helical portions that are mated.

11. The trigger assembly of claim 10, wherein, the first and / or second helical portions are configured such that the second helical portion is disengaged from the first helical portion upon movement of the second component to the pre-loaded position.

12. The trigger assembly of claim 11, wherein, The actuator is configured to abut the second helical portion to hinder the second component from moving away from the pre-loaded position when the second helical portion is disengaged from the first helical portion.

13. The trigger assembly of claim 10, wherein, In the case that the second component moves to the trigger position, the helical end surface of the second helical portion abuts the helical end surface of the first helical portion.

14. The trigger assembly of claim 10, wherein, The first helical portion comprises two first helical portions which are centrally symmetrical, the second helical portion comprises two second helical portions which are centrally symmetrical, and wherein the actuator comprises a first actuator and a second actuator which are arranged on the two sides of the circumference of the first component and / or the second component, and are used to abut a respective one of the two second helical portions, respectively.

15. The trigger assembly of claim 10, wherein, The actuator comprises a limiting protrusion which is arranged adjacent to the bearing portion and protrudes from the bearing surface of the bearing portion, and is used to block the rotation of the second component towards the first direction in the case that the bearing portion abuts the second helical portion.

16. The trigger assembly of claim 15, wherein, The end of the second helical portion of the second component is provided with a limiting step, and the limiting protrusion of the actuator blocks the rotation of the second component towards the first direction by abutting the limiting step.

17. The trigger assembly according to any one of claims 1 to 7, further comprising a backstop which is telescopically arranged in the first component, and is used to block the rotation of the second component towards a second direction which is opposite to the first direction in the case that the second component moves to the pre-loaded position.

18. The trigger assembly of claim 17, wherein, The backstop comprises a bevel portion which is configured to be at least partially retracted into the first component under the extrusion of the second component.

19. The trigger assembly of claim 18, wherein, The backstop is configured to be at least partially extended from the first component during the entry of the second component into the pre-loaded position, so that a straight portion of the backstop which is opposite to the bevel portion can block the rotation of the second component towards the second direction.

20. The trigger assembly of claim 17, further comprising a backstop spring, wherein, The first component comprises a groove for receiving the backstop, and wherein the backstop spring is arranged between the backstop and the groove, and is used to provide the backstop with an elastic force to extend out of the groove.

21. A trigger assembly for an atomizer, comprising: a first component; a second component, wherein the first component and the second component are configured such that the second component can move away from the first component to a pre-loaded position in the case that the second component rotates towards a first direction relative to the first component; a backstop which is telescopically arranged in the first component, and is used to block the rotation of the second component towards a second direction which is opposite to the first direction in the case that the second component moves to the pre-loaded position; and an actuator for releasing the second component to move the second component from the pre-loaded position to a trigger position towards the first component.

22. The trigger assembly of claim 21, wherein, The anti-backoff stopper comprises a bevel portion configured to be at least partially retracted into the first component under the extrusion of the second component.

23. The trigger assembly of claim 22, wherein, The anti-backoff stopper is configured to be partially extended from the first component during the second component entering the preloaded position, such that a straight portion of the anti-backoff stopper opposite to the bevel portion is able to block the rotation of the second component towards the second direction.

24. The trigger assembly of claim 22, further comprising a backstop spring, wherein, The first component comprises a groove for receiving the anti-backoff stopper, and wherein the anti-backoff elastic member is disposed between the anti-backoff stopper and the groove for providing the anti-backoff stopper with an elastic force to extend out of the groove.

25. The trigger assembly of claim 22, wherein, The anti-backoff stopper comprises a bevel chamfer at a first end of the bevel portion which is the last to contact the second component.

26. The trigger assembly of claim 22, wherein, The anti-backoff stopper comprises a step portion at a second end of the bevel portion which is the first to contact the second component.

27. An atomizer comprising the trigger assembly according to any one of claims 1 to 26 for triggering the atomizer to spray an atomized fluid.

28. The atomizer of claim 27, wherein, The first component is configured as an upper housing of the atomizer, the second component is configured as a delivery tube seat of the atomizer, and wherein the delivery tube seat is configured to be rotatable with a rotation of a lower housing of the atomizer. The first component is configured as an upper housing of the atomizer, the second component is configured as a delivery tube seat of the atomizer, and wherein the delivery tube seat is configured to be rotatable with a rotation of a lower housing of the atomizer.

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