CN219481154U - Trigger structure for quantitative atomization device and quantitative atomization device - Google Patents

Abstract

The utility model relates to a trigger structure for a quantitative atomization device and the quantitative atomization device, wherein the quantitative atomization device comprises a valve core, and the trigger structure comprises: the liquid inlet triggering mechanism comprises a first button piece and a driving assembly, and the driving end of the driving assembly is used for being connected with the valve core; the atomization triggering mechanism comprises a second button piece and a limiting piece; when the first button piece is pressed by external force, the first button piece moves, so that the driving end drives the valve core to move along a first direction in the axial direction of the valve core, and the driving end stops when moving to be limited on the limiting piece, so that liquid feeding is triggered; when the second button piece is pressed by external force, the limiting piece moves to be separated from the driving end, and the driving end resets along with the valve core after limiting release so as to trigger atomization. According to the trigger structure, the valve core liquid inlet is triggered by the liquid inlet trigger mechanism, the valve core spray is triggered by the atomization trigger mechanism, the liquid inlet trigger and the atomization trigger are separately and independently carried out, and the accuracy of metering and drug delivery is prevented from being influenced by misoperation.

Description

Trigger structure for quantitative atomization device and quantitative atomization device

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a triggering structure for a quantitative atomization device and the quantitative atomization device.

Background

The oral-nasal inhalation administration is an administration mode requiring the coordination of a medicine instrument, and is an important administration way for treating various diseases including lung and whole body. When the medicine is used for atomization administration, the medicine is required to be matched with a spraying device for use in the inhalation process, and high requirements are put on the inhalation device by good medicine administration efficiency and treatment effect.

At present, the bag valve type atomizing device has the advantages of portability and instant use, the bag valve structure is formed by prefilling liquid medicine and high-pressure air, and the built-in atomizing chip atomizes the liquid medicine into fine medicine aerosol for treating upper respiratory diseases.

The patent with the application number of 202121399318.3 is improved based on the existing bag valve type atomizing device, atomized particles are thinned by optimizing an atomizing chip, and a metering valve is added, so that quantitative administration of the atomizing device is realized. However, when the atomization device is used, after the upper cover is rotated to trigger liquid feeding, the liquid feeding can be stopped and the spraying can be triggered only by pressing the button when the outlet starts to spray mist drops, and the liquid medicine is wasted because the button can be pressed only when the outlet starts to spray mist drops in the initial atomization process. And moreover, the atomizing device is complex to operate, if a user does not operate according to the operation requirement, the atomizing device is always in a liquid inlet state and continuously sprays, the function of quantitative dosage is invalid, and the user cannot accurately dose.

Disclosure of Invention

Based on the above-mentioned drawbacks in the prior art, an object of the present utility model is to provide a triggering structure for a quantitative atomizing device, which does not trigger atomization without pressing a second button member when liquid feeding is completed, thereby avoiding waste of liquid medicine and functional failure of quantitative dosage caused by improper operation.

Therefore, the utility model provides the following technical scheme.

The utility model provides a trigger structure for a quantitative atomization device, which comprises a valve core, wherein the trigger structure comprises:

the liquid inlet triggering mechanism comprises a first button piece and a driving assembly which are matched, and the driving end of the driving assembly is used for being connected with the valve core;

the atomization triggering mechanism comprises a second button piece and a limiting piece which are matched with each other;

when the first button piece is pressed by external force, the first button piece moves, so that the driving end drives the valve core to move along a first direction in the axial direction of the valve core, and the driving end stops when moving to be limited by the limiting piece, so that liquid feeding is triggered;

when the second button piece is pressed by external force, the limiting piece moves to be separated from the driving end, and the driving end resets along with the valve core after limiting is released, so that atomization is triggered.

Preferably, the movement direction of the first button member is opposite to or intersects with the movement direction of the second button member.

Preferably, the first button member and the second button member are different in shape and/or size.

Preferably, the first button member is provided with a waist-shaped hole extending in the axial direction;

the driving assembly comprises a shaft rod and at least two groups of connecting rod mechanisms, wherein the connecting rod mechanisms comprise a first connecting rod and a second connecting rod, and the shaft rod is connected to the waist-shaped hole in a penetrating way; one end of the first connecting rod is hinged to the fixed position, and the other end of the first connecting rod is hinged to the shaft rod; one end of the second connecting rod forms the driving end and is hinged to the valve core, and the other end of the second connecting rod is hinged to the shaft rod.

Preferably, the two sets of said linkages are symmetrically arranged about said axis.

Preferably, one end of the rod body of the second connecting rod is connected with a connecting piece, the connecting piece forms the driving end, one end of the connecting piece is hinged to the valve core, and the other end of the connecting piece is matched with the limiting piece to realize limiting or disengaging.

Preferably, the atomization triggering mechanism comprises a button reset elastic piece, one end of the button reset elastic piece is connected with the second button piece, the other end of the button reset elastic piece is in a propped state, and the button reset elastic piece is used for resetting the second button piece.

Preferably, the limiting piece comprises a first abutting wall and a second abutting wall; when the driving end is limited by the limiting piece, the first abutting wall and the second abutting wall are respectively abutted to the two surface walls of the driving end.

Preferably, the atomization triggering mechanism comprises a connecting piece, wherein the connecting piece is rotatably connected to a first connecting shaft of the quantitative atomization device, and the second button piece and the limiting piece are respectively connected to two sides of the connecting piece;

when the second button piece is pressed, the second button piece moves and drives the connecting piece to rotate so as to change the position of the limiting piece in the circumferential direction of the connecting piece, and the limiting piece is matched with the driving end to realize limiting or separation.

Preferably, the connecting piece is provided with a first connecting arm and a second connecting arm, and the first connecting arm and the second connecting arm are uniformly distributed along the circumferential direction of the connecting piece; the second button piece is connected to the first connecting arm, and the limiting piece is connected to the second connecting arm.

The utility model also provides a quantitative atomization device which comprises a valve core and the triggering mechanism, wherein the driving end of the driving assembly is connected with the valve core.

The utility model has the following technical effects:

the utility model provides a trigger structure for a quantitative atomization device, which comprises a liquid inlet trigger mechanism and an atomization trigger mechanism, wherein liquid inlet of a valve core is triggered by the liquid inlet trigger mechanism, valve core spraying is triggered by the atomization trigger mechanism, and liquid inlet triggering and atomization triggering are carried out separately and independently.

The utility model provides a quantitative atomization device, which does not trigger atomization without pressing a second button piece when liquid feeding is finished, avoids liquid medicine waste and functional failure of quantitative dosage caused by the fact that the quantitative atomization device is always in a state of simultaneous liquid feeding and spraying due to improper operation, can improve the stability of drug delivery, and ensures that accurate metering drug delivery can be realized.

Drawings

FIG. 1 is a schematic diagram of an explosive structure of a quantitative atomizing device of the present utility model;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is an exploded view of a partial structure of the liquid feed trigger mechanism of the present utility model;

FIG. 4 is a schematic diagram of an exploded view of the atomizing trigger mechanism of the present utility model;

FIG. 5 is a schematic view of a partial perspective view of a quantitative atomizing device in an initial state;

FIG. 6 is a sectional view showing the structure of the quantitative atomizing apparatus of the present utility model in an initial state;

FIG. 7 is an enlarged view of FIG. 6 at B;

FIG. 8 is a second cross-sectional view of the quantitative atomizer of the present utility model in an initial state;

FIG. 9 is an enlarged view of FIG. 8 at C;

FIG. 10 is a cross-sectional view of a quantitative atomizer of the present utility model in a liquid feed state;

FIG. 11 is an enlarged view of FIG. 10 at D;

FIG. 12 is a second cross-sectional view of the quantitative atomizer of the present utility model in a liquid feed state;

FIG. 13 is an enlarged view of FIG. 12 at E;

FIG. 14 is a cross-sectional view showing the structure of the quantitative atomizing apparatus of the present utility model in an atomized state;

FIG. 15 is an enlarged view of F in FIG. 14;

FIG. 16 is a sectional view showing a structure of a quantitative atomizing apparatus according to the present utility model in an atomized state;

fig. 17 is an enlarged view at G in fig. 16.

Description of the reference numerals

100. A quantitative atomizing device;

1. a bag valve assembly;

11. a valve core; 111. a first cavity; 112. a third through hole; 12. a valve core resetting elastic piece; 13. a tank body; 14. a bag body; 15. a valve body; 151. a first through hole; 152. a first limit structure; 16. a metering chamber; 161. a second through hole; 162. a first separator; 1621. a fourth through hole; 163. a second separator; 1631. a fifth through hole; 164. a first chamber; 165. a second chamber; 166. a third chamber; 167. a metering plate; 168. resetting the elastic piece of the metering plate; 169. an air pressure balancing channel; 1691. a filter; 17. a mounting base; 171. a second limit structure; 18. an atomization chip;

2. a liquid inlet trigger mechanism;

21. a first button member; 211. a first button body; 212. a first connection portion; 2121. a waist-shaped hole; 22. a drive assembly; 221. a shaft lever; 222. a link mechanism; 2221. a first link; 2222. a second link; 22221. a connecting piece;

3. an atomization triggering mechanism;

31. a second button member; 311. a second button body; 312. an abutting portion; 313. a second connecting portion; 32. a limiting piece; 321. a first abutment wall; 322. a second abutment wall; 33. a button reset elastic member; 34. a linking member; 341. a first connecting arm; 342. a second connecting arm;

4. a mounting member;

41. a first connecting shaft; 42. a sixth through hole; 45. a second cavity; 46. a second connecting shaft; 47. and (5) mounting holes.

Detailed Description

In order to make the technical scheme and the beneficial effects of the utility model more obvious and understandable, the following detailed description is given by way of example. Unless defined otherwise, technical and scientific terms used herein have the same meaning as technical and scientific terms in the technical field to which this application belongs.

In the description of the present utility model, unless explicitly defined otherwise, terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., refer to an orientation or positional relationship based on that shown in the drawings, and are merely for convenience of simplifying the description of the present utility model, and do not indicate that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, i.e., are not to be construed as limiting the present utility model.

In the present utility model, the terms "first", "second" are used for descriptive purposes only and are not to be construed as relative importance of the features indicated or the number of technical features indicated. Thus, a feature defining "first", "second" may explicitly include at least one such feature. In the description of the present utility model, "plurality" means at least two; "plurality" means at least one; unless otherwise specifically defined.

In the present utility model, the terms "mounted," "connected," "secured," "disposed," and the like are to be construed broadly, unless otherwise specifically limited. For example, "connected" may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, or can be communicated between two elements or the interaction relationship between the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless explicitly defined otherwise, a first feature "on", "above", "over" and "above", "below" or "under" a second feature may be that the first feature and the second feature are in direct contact, or that the first feature and the second feature are in indirect contact via an intermediary. Moreover, a first feature "above," "over" and "on" a second feature may be that the first feature is directly above or obliquely above the second feature, or simply indicates that the level of the first feature is higher than the level of the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the level of the first feature is less than the level of the second feature.

References to "front", "back", "left", "right", "upper" and "lower" in this disclosure are all made to the designation in fig. 1.

The trigger structure of the present utility model will be described in detail with reference to fig. 1 to 17.

In the present embodiment, the quantitative atomizing device 100 includes a bag valve assembly 1 and a trigger structure, the bag valve assembly 1 is used for storing liquid and quantitatively spraying, the bag valve assembly 1 includes a valve core 11 and a valve core resetting elastic member 12, and the valve core resetting elastic member 12 is abutted against a surface wall of one end of the valve core 11. It should be understood that the structure of the liquid inlet and outlet of the quantitative atomizing device 100 is not limited to the bag valve assembly 1, but may be any other structure including a valve core 11 capable of reciprocating and capable of realizing liquid inlet and outlet during the reciprocating movement of the valve core 11.

The trigger structure includes feed liquor trigger mechanism 2 and atomizing trigger mechanism 3, and feed liquor trigger mechanism 2 includes matched with first button piece 21 and drive assembly 22, and drive end connection in case 11 of drive assembly 22, and feed liquor trigger mechanism 2 is used for triggering the case 11 feed liquor of bag valve assembly 1. The atomization triggering mechanism 3 comprises a second button piece 31 and a limiting piece 32 which are matched, and the atomization triggering mechanism 3 is used for triggering the valve core 11 of the bag valve assembly 1 to spray atomized aerosol.

As shown in fig. 6-9, there is no positional relationship between the stop 32 and the drive end of the drive assembly 22 when the metered dose atomizing device 100 is in the initial state. As shown in fig. 10 to 13, when an external force presses the first button member 21, the first button member 21 can move, the moving first button member 21 can enable the driving end to move along a first direction in the axial direction of the valve core 11, the driving end drives the valve core 11 to synchronously move, the moving valve core 11 compresses the valve core reset elastic member 12, when the driving end moves to be limited at the limiting member 32, stopping, the external force driving the first button member 21 is removed, and at the moment, the valve core 11 also moves to a position for triggering liquid inlet and then stopping, and the bag valve assembly 1 advances liquid. It should be appreciated that the first button member 21 may be in a depressed state at all times during movement of the driving end to the limit stop 32, with the application of an external force to continuously maintain movement of the first button member 21. Of course, the external force can be removed after the first button member 21 is driven to move for a certain distance by the external force, and the first button member 21 is driven to move continuously by the mechanical structure (such as providing power by a spring) of the liquid inlet triggering mechanism 2, so that the driving end stops when moving to be limited by the limiting member 32.

As shown in fig. 14 to 17, after the liquid feeding is completed, when the spraying is required to be triggered, the second button member 31 is pressed by an external force, the second button member 31 can move, the moving second button member 31 enables the limiting member 32 to move so as to be separated from the driving end, the valve core 11 moves in a second direction opposite to the first direction under the rebound of the valve core reset elastic member 12, and as the valve core 11 is connected with the driving end of the driving assembly 22, the driving end resets along with the valve core 11 after the limit release, and after the valve core 11 resets, the bag valve assembly 1 quantitatively sprays.

By adopting the technical scheme, the liquid inlet of the bag valve assembly 1 is triggered by the liquid inlet triggering mechanism 2, the spraying of the bag valve assembly 1 is triggered by the atomization triggering mechanism 3, and the liquid inlet triggering and the atomization triggering are carried out separately and independently. The quantitative atomization device 100 of this scheme easy operation and stability, the second button piece 31 then can not trigger the atomizing when the feed liquor finishes, avoids causing the liquid medicine extravagant to and avoid leading to the functional failure of quantitative dosage because of the improper state that makes quantitative atomization device be in feed liquor and spraying go on simultaneously always, can improve the stability of dosing, ensures to realize accurate measurement and doses.

In an embodiment, the movement direction of the first button member 21 is opposite to or intersects with the movement direction of the second button member 31, so that the user can distinguish the first button member 21 from the second button member 31, and avoid pressing wrong buttons. As shown in fig. 5, the movement direction of the first button member 21 is perpendicular to the movement direction of the second button member 31.

In an embodiment, the first button member 21 and the second button member 31 are different in shape and/or size so as to facilitate the user to distinguish between the first button member 21 and the second button member 31 and avoid pressing wrong buttons.

In one embodiment, the first button member 21 is provided with a waist-shaped hole 2121, and the waist-shaped hole 2121 extends in the axial direction. The driving assembly 22 comprises a shaft 221 and two groups of link mechanisms 222, the link mechanisms 222 comprise a first link 2221 and a second link 2222, and the shaft 221 is connected to the waist-shaped hole 2121 in a penetrating way; one end of the first link 2221 is hinged at the fixed position, and the other end is hinged at the shaft 221; one end of the second link 2222 constitutes a driving end and is hinged to the valve core 11, and the other end is hinged to the shaft 221. In this scheme, the liquid inlet triggering mechanism 2 has a simple structure and is easy to operate, and the movement direction and movement path of the shaft lever 221 are limited by the waist-shaped hole 2121 so as to quantitatively drive the valve core 11 to move.

Taking the direction shown in fig. 1 as an example for specific explanation, in this embodiment, the first link 2221 is located above the second link 2222, and the movement direction of the first button element 21 is perpendicular to the movement direction of the second button element 31. As shown in fig. 7 and 11, when the first button member 21 is pressed leftwards, the first button member 21 pushes the shaft 221 leftwards, the end portion of the first link 2221 and the second link 2222 hinged to the shaft 221 moves leftwards along with the shaft 221, and since one end of the first link 2221 is fixed, the hinge point of the second link 2222 and the valve core 11 moves downwards, at this time, the shaft 221 moves downwards along the waist-shaped hole 2121, thereby driving the valve core 11 to move downwards and the valve core resetting elastic member 12 is compressed, until the second link 2222 stops moving when moving to be limited by the limiting member 32, and liquid feeding is triggered. When the second button member 31 is pressed backward so that the second link 2222 is disengaged from the stopper 32 as shown in fig. 13 and 17, the spool return elastic member 12 is bounced so that the spool 11 moves upward as shown in fig. 11 and 15, the spool 11 pushes the second link 2222 upward so that the driving assembly 22 is returned, and at the same time, the shaft 221 pushes the first button member 21 rightward so that the first button member 21 is returned rightward, and at this time, the shaft 221 moves upward along the waist-shaped hole 2121 to trigger atomization. It should be understood that the movement scheme of the valve core 11 is not limited thereto, and if the first link 2221 is located below the second link 2222, the valve core 11 moves upward to trigger the liquid feeding when the first button member 21 is pressed leftward, and moves downward to trigger the atomization when the second button member 31 is pressed.

Further, as shown in fig. 3 and 5, the two sets of link mechanisms 222 are symmetrically disposed with respect to the axial direction of the valve core 11, and the two second links 2222 are symmetrically hinged to both sides of the valve core 11, so that the reciprocating motion of the valve core 11 can be stably driven.

It should be understood that the number of the link mechanisms 222 may be three or more, and the assembly relationship of the plurality of link mechanisms 222 may be slightly complicated, so that the reciprocating motion of the valve element 11 can be driven by the interlocking relationship.

Further, as shown in fig. 9, 13 and 17, one end of the rod body of the second connecting rod 2222 is connected with a connecting piece 22221, the connecting piece 22221 forms a driving end, one end of the connecting piece is hinged to the valve core 11, and the other end of the connecting piece is matched with the limiting piece 32 to realize limiting or separating. The second link 2222 is constructed in a structure of a detachably connected rod body and the connector 22221 so as to simplify the processing.

Further, as shown in fig. 3, the first button member 21 includes a first button body 211 and a first connection portion 212 connected to each other, the waist-shaped hole 2121 is formed in the first connection portion 212, and the thickness of the first button body 211 is greater than that of the first connection portion 212, so that the first button body 211 has a larger area for a user to press, and is convenient to operate, and the first connection portion 212 is thinner, and the depth of the waist-shaped hole 2121 is smaller, so as to reduce the friction resistance generated when the waist-shaped hole 2121 moves to the shaft 221.

In an embodiment, as shown in fig. 4, 5, 13 and 17, the atomizing trigger mechanism 3 includes a button return elastic member 33, one end of which is connected to the second button member 31, and the other end of which is in a stop state, and the button return elastic member 33 is used for returning the second button member 31, so that the structure is simple and the return is quick.

In one embodiment, as shown in fig. 4, the limiting member 32 includes a first abutment wall 321 and a second abutment wall 322; as shown in fig. 13, when the driving end is limited to the limiting member 32, the first abutting wall 321 and the second abutting wall 322 respectively abut against two surface walls of the driving end, so as to stably limit the driving end of the driving assembly 22, and the driving end of the driving assembly 22 can be easily separated from the limiting member 32 when the second button member 31 is pressed.

Further, as shown in fig. 5 and 13, the limiting member 32 is configured to limit the connecting member 22221 of the second connecting rod 2222, the connecting member 22221 is cylindrical, the first abutting wall 321 is configured to abut against an outer wall of a side of the connecting member 22221 facing away from the valve core resetting elastic member 12, and the second abutting wall 322 is configured to abut against an end surface of the connecting member 22221. Since the connection member 22221 is cylindrical, the surface of the first abutment wall 321 is arc-shaped, and the first abutment wall 321 can be stably abutted against the outer wall of the side of the connection member 22221 facing away from the spool return elastic member 12.

In one embodiment, as shown in fig. 1, 6 and 9, the quantitative atomization device 100 includes a mounting member 4, and both the liquid inlet trigger mechanism 2 and the atomization trigger mechanism 3 are mounted to the mounting member 4.

Further, as shown in fig. 9, the mount 4 is provided with a first connecting shaft 41. The atomizing trigger mechanism 3 includes an engaging member 34 rotatably connected to the first connecting shaft 41, and the second button member 31 and the limiting member 32 are respectively connected to both sides of the engaging member 34. As shown in fig. 9, when the quantitative atomizing device 100 is in an initial state, the limiting member 32 and the driving end (such as the connecting member 22221) of the driving assembly 22 are staggered in the axial direction of the valve core 11, so, as shown in fig. 11, when the first button member 21 moves under an external force, the driving end of the driving assembly 22 drives the valve core 11 to move along the first direction, as shown in fig. 13, the driving end of the driving assembly 22 moves towards the position of the limiting member 32, when the driving end of the driving assembly 22 contacts the limiting member 32, as the limiting member 32 is pressed by the driving end of the driving assembly 22, the limiting member 32 slightly deforms and/or the engaging member 34 is stressed to slightly rotate, so that the driving end is limited by the limiting member 32, and when the driving end is limited at the moment of the limiting member 32, a mechanical collision sound can be emitted, so that a user can be prompted to finish triggering of liquid inlet, and the user can release the first button member 21. After the liquid is fed, as shown in fig. 17, the second button member 31 is pressed by an external force, and when the second button member 31 moves, one side of the connecting member 34 is pressed to rotate the connecting member 34, the connecting member 34 drives the limiting member 32 to rotate together, so that the position of the limiting member 32 in the circumferential direction of the connecting member 34 is changed, and the driving end of the driving assembly 22 is conveniently separated from the limiting member 32. The atomization triggering mechanism 3 is simple in structure and convenient to operate, and can rapidly limit or release the limit of the driving end of the driving assembly 22.

Further, as shown in fig. 4 and 9, the engagement member 34 is provided with a first connecting arm 341 and a second connecting arm 342, and the first connecting arm 341 and the second connecting arm 342 are distributed, preferably uniformly, along the circumferential direction of the engagement member 34; the second button member 31 is connected to the first connecting arm 341, the first connecting arm 341 is configured to increase the moment of the second button member 31 on the connecting member 34, the limiting member 32 is connected to the second connecting arm 342, and the second connecting arm 342 is configured to increase the moment of the limiting member 32 on the connecting member 34, so as to reduce the external force applied to the first button member 21 when the liquid feeding is triggered and the external force applied to the second button member 31 when the atomization is triggered, thereby facilitating easy operation. Further, the second button member 31 abuts against the first connecting arm 341, which facilitates assembly.

Further, as shown in fig. 2, 4 and 9, the mounting member 4 is provided with a second cavity 45, the second button member 31 includes a second button body 311, an abutment portion 312 and a second connection portion 313 which are sequentially connected, the button return elastic member 33 is sleeved on the outer periphery of the second connection portion 313, one end of the second button body 311 extends into the second cavity 45, the abutment portion 312 and the button return elastic member 33 are located in the second cavity 45, two ends of the button return elastic member 33 are respectively abutted against inner walls of the abutment portion 312 and the second cavity 45, and one end of the second connection portion 313 passes through the second cavity 45 and is connected with the first connection arm 341. As shown in fig. 9, when the second button member 31 is in the non-pressed state, the button return elastic member 33 abuts the abutment portion 312 on the inner wall of the second cavity 45 on the side close to the second button body 311; as shown in fig. 17, when the second button member 31 is pressed by an external force, the abutment portion 312 compresses the button return elastic member 33; when the external force is removed, the button return elastic member 33 rebounds to return the abutment portion 312. Further, one end of the second connection portion 313 abuts against the first connection arm 341.

Further, as shown in fig. 9 and 11, the mounting member 4 is provided with a second connection shaft 46, and one end of the first link 2221 of the driving assembly 22 is hinged to the second connection shaft 46.

Further, as shown in fig. 2 and 6, the mounting member 4 is provided with a mounting hole 47, the first button member 21 is movably mounted to the mounting hole 47, and the second button member 31 is movably mounted to the second cavity 45.

In one embodiment, as shown in fig. 6, the mounting member 4 is covered on the outer circumferences of the valve core 11, the liquid inlet triggering mechanism 2 and the atomization triggering mechanism 3, and the assembly is simple and attractive.

Further, as shown in fig. 11, the mount 4 is provided with a sixth through hole 42, which is opposite to the outlet position of the spool 11; the mounting member 4 is open at one end to form a suction channel. Thus, the mounting member 4 can form a suction channel in addition to the functions of mounting the liquid inlet trigger mechanism 2 and the atomization trigger mechanism 3, and the opening of the mounting member 4 can be aligned with the mouth and nose when the quantitative atomization device 100 is used by a user, thereby being beneficial to the miniaturization design of the quantitative atomization device 100.

In one embodiment, as shown in fig. 1, 6 and 7, the bag valve assembly 1 further includes a tank 13, a bag 14, a valve body 15, and a metering chamber 16, where the tank 13 is used to hold compressed gas, the bag 14 is located in the tank 13 and is used to hold liquid, the valve body 15 is provided with a first through hole 151, one end of the valve body extends into the bag 14, the metering chamber 16 is connected to the valve body 15 and is provided with a second through hole 161, and the second through hole 161 is in communication with the chamber of the valve body 15 and is opposite to the first through hole 151. One end of the valve core 11 extends into the valve body 15 and is in clearance fit with the valve body, the other end of the valve core 11 is positioned outside the tank body 13, and the valve core 11 is provided with a first concave cavity 111 and a third through hole 112 which are sequentially distributed along the axial direction of the valve core.

When the quantitative atomizing device 100 is in the initial state, as shown in fig. 7, the inner wall of the valve body 15 abuts against the outline of the opening of the first cavity 111 to close the first cavity 111, the inner wall of the valve core 11 closes the first through hole 151 of the valve body 15, and the liquid in the bag 14 cannot enter the first cavity 111 through the first through hole 151 of the valve body 15, so that liquid cannot enter. Further, the third through hole 112 of the spool 11 and the second through hole 161 of the metering chamber 16 are located opposite to each other, and both are in a communicating state.

When the first button 21 is pressed to trigger the quantitative atomizing device 100 to be in a liquid feeding state, the valve core 11 moves to a liquid feeding position, and at this time, as shown in fig. 11, the first through hole 151, the first cavity 111 and the second through hole 161 are sequentially communicated to form a liquid feeding channel, the inner wall of the valve body 15 seals the third through hole 112 of the valve core 11, and the liquid in the bag body 14 flows into the metering cavity 16 through the liquid feeding channel under the extrusion of the compressed gas in the tank body 13.

After the liquid is fed, when the second button piece 31 is pressed to trigger the quantitative atomization device 100 to be in an atomization state, as shown in fig. 15, the valve core 11 moves reversely and resets, the second through hole 161 and the third through hole 112 are communicated to form a liquid outlet channel, and the liquid in the metering cavity 16 enters the valve core 11 through the liquid outlet channel and is atomized and sprayed out.

Through adopting above-mentioned technical scheme, through setting up measurement chamber 16 in order to realize quantitative atomizing, through optimizing the structure of the feed liquor passageway and the drain channel of bag valve assembly 1 and separating measurement chamber 16 and bag body 14 and set up for two processes of feed liquor and atomizing are carried out completely separately, avoid making quantitative atomizing device be in the state that feed liquor and spraying go on simultaneously always because of mishandling, in addition, bag valve assembly 1 overall structure is simple and stable, and feed liquor and atomizing operation process are simple.

In one embodiment, the first cavity 111 is an annular cavity, reducing the accuracy requirements of the mounting position of the spool 11.

In one embodiment, as shown in FIG. 7, the metering chamber 16 includes a first diaphragm 162, a second diaphragm 163, a metering plate 167, a metering plate return spring 168, and a pneumatic balance channel 169. The first partition 162 is provided with a fourth through hole 1621, and the second partition 163 is provided with a fifth through hole 1631; the first partition 162 and the second partition 163 are sequentially distributed in a direction toward the second through hole 161, and partition the metering chamber 16 to form a first chamber 164, a second chamber 165, and a third chamber 166. The metering plate 167 is movably located within the second chamber 165, and the peripheral side wall of the metering plate 167 abuts the inner wall of the second chamber 165. The metering plate return spring 168 is connected at one end to the wall of the first chamber 164 and at the other end to the metering plate 167. The air pressure balancing channel 169 is respectively communicated with the first chamber 164 and the outside, and the air pressure balancing channel 169 is used for balancing the internal and external air pressure of the space of the metering plate 167 facing one side of the metering plate return elastic member 168 in the liquid feeding and atomizing process, so that the metering plate 167 can smoothly reciprocate.

As shown in fig. 7, when the metering device 100 is in the initial state, the metering plate return elastic member 168 passes through the fourth through hole 1621 and presses the metering plate 167 against the second partition 163, and the metering plate 167 closes the fifth through hole 1631 of the second partition 163. As shown in fig. 11, when the quantitative atomizing device 100 is in the liquid-feeding state, the liquid in the bag 14 flows into the metering chamber 16 through the liquid-feeding passage under the extrusion of the compressed gas in the tank 13, the liquid pushes the metering plate 167 to move toward the first partition 162 and the metering plate return elastic member 168 is compressed until the metering plate 167 abuts against the first partition 162, and the liquid feeding is completed, and in this process, the air in the space of the metering plate 167 on the side facing the metering plate return elastic member 168 is discharged to the outside through the air pressure balance passage 169.

As shown in fig. 15, when the quantitative atomizing device 100 is in an atomized state, the second through hole 161 and the third through hole 112 are communicated to form a liquid outlet channel, the metering plate return elastic member 168 rebounds and pushes the metering plate 167 to move toward the second partition plate 163, so that the liquid in the metering chamber 16 is extruded into the valve core 11 until the metering plate 167 abuts against the second partition plate 163, and atomization is completed, and in this process, the outside air enters into the space of the metering plate 167 toward one side of the metering plate return elastic member 168 through the air pressure balance channel 169. The volume of the space of the second chamber 165 between the first partition 162 and the second partition 163 corresponds to the amount of intake fluid and the amount of atomization, and the size of the space of the second chamber 165 is adjusted to match different dosing requirements.

Further, as shown in fig. 2, a filter 1691 is disposed at the connection between the air pressure balancing channel 169 and the atmosphere to filter the air entering the air pressure balancing channel 169 from the outside, so as to prevent the impurity from entering the metering chamber 16 and affecting the movement of the metering plate 167.

It should be appreciated that the pressure within the canister 13 is greater than the pressure required by the metering plate 167 to move from the second baffle 163 to the first baffle 162 in order to facilitate fluid intake.

It should be appreciated that the metered dose atomizing device 100 requires several iterations of feeding and atomizing prior to use to expel air from the valve cartridge 11 and metering chamber 16, which may be done prior to shipment or after shipment to guide the user.

It should be understood that, as shown in fig. 11, since the second chamber 165 and the third chamber 166 are filled with liquid after the liquid feeding is completed and the volume of the liquid ejected during atomization is equal to the volume of the liquid in the second chamber 165, after the atomization is completed, the liquid in the third chamber 166 remains at least partially in the valve core 11 until the liquid level in the valve core 11 is equal to the liquid level in the third chamber 166 when the quantitative atomization device 100 is in the initial state after multiple liquid feeding and atomization, and the remaining liquid in the valve core 11 maintains a stable liquid level.

In the above technical solution, the whole structure of the metering chamber 16 is simple, and the metering chamber can realize instantaneous liquid feeding and instantaneous atomization by matching the metering plate reset elastic member 168 with the metering plate 167.

In one embodiment, as shown in fig. 1 and 6, the bag-valve assembly 1 further includes a mounting seat 17 for connecting and sealing the canister 13 and the bag 14 and for connecting and sealing the bag 14 and the valve body 15.

Further, as shown in fig. 6, a first limiting structure 152 is disposed in the valve body 15, and is used for limiting the stop position of the valve core 11 when moving along the first direction, that is, limiting the liquid inlet position of the valve core 11. Specifically, the first limiting structure 152 is an annular protrusion, when the liquid inlet is triggered, the valve core 11 moves along the first direction, and the valve core resetting elastic member 12 is compressed, so that the valve core 11 moves to abut against the first limiting structure 152 to stop moving.

Further, as shown in fig. 6 and 7, the mounting seat 17 is provided with a second limit structure 171 for limiting the stop position when the spool 11 moves in the second direction, that is, limiting the initial position of the spool 11. When the atomization is triggered, the valve core resetting elastic member 12 rebounds and passes through the first limiting structure 152 to push the valve core 11 to move reversely, the valve core 11 moves to abut against the second limiting structure 171 to stop moving, and at this time, the quantitative atomization device 100 is restored to the initial state.

Further, as shown in fig. 6 and 7, the spool return elastic member 12 is located in the valve body 15 to facilitate assembly.

In a specific embodiment, as shown in fig. 7, the first button member 21 limits the distance of the reciprocating motion of the shaft 221 through the waist-shaped hole 2121, and serves as a primary limit for the reciprocating motion of the valve core 11; in addition, as shown in fig. 6, the first limiting structure 152 and the second limiting structure 171 also serve as secondary limiting for the reciprocating movement of the valve core 11, so as to improve the limiting effect.

In one embodiment, as shown in fig. 7, the bag valve assembly 1 further includes an atomizing chip 18 disposed at the outlet end of the valve cartridge 11 to convert the liquid ejected from the valve cartridge 11 into aerosol.

In one embodiment, the valve core return elastic member 12 and/or the button return elastic member 33 are springs, which are simple in structure and easy to assemble. Of course, the structure of the valve core return elastic member 12 and/or the button return elastic member 33 is not limited thereto, and any other structure having elasticity and return ability may be used.

It should be understood that the above examples are illustrative and are not intended to encompass all possible implementations encompassed by the claims. Various modifications and changes may be made in the above embodiments without departing from the scope of the disclosure. Likewise, the individual features of the above embodiments can also be combined arbitrarily to form further embodiments of the utility model which may not be explicitly described. Therefore, the above examples merely represent several embodiments of the present utility model and do not limit the scope of protection of the patent of the present utility model.

Claims (11)

1. A trigger structure for a quantitative atomizing device, the quantitative atomizing device comprising a valve core (11), characterized in that the trigger structure comprises:

the liquid inlet triggering mechanism (2) comprises a first button piece (21) and a driving assembly (22) which are matched, and the driving end of the driving assembly (22) is used for being connected with the valve core (11);

an atomization triggering mechanism (3) which comprises a second button piece (31) and a limiting piece (32) which are matched with each other;

when an external force presses the first button piece (21), the first button piece (21) moves, so that the driving end drives the valve core (11) to move along a first direction in the axial direction of the valve core (11), and the driving end stops when being limited at the limiting piece (32) to trigger liquid feeding;

when the second button piece (31) is pressed by external force, the limiting piece (32) moves to be separated from the driving end, and the driving end is reset along with the valve core (11) subjected to limiting release so as to trigger atomization.

2. Trigger structure for a dosing device according to claim 1, characterized in that the direction of movement of the first button member (21) is opposite or intersects the direction of movement of the second button member (31).

3. Trigger structure for a dosing device according to claim 1, characterized in that the first button member (21) and the second button member (31) are different in shape and/or size.

4. A trigger structure for a dosing device according to any one of claims 1-3, characterized in that the first button member (21) is provided with a kidney-shaped aperture (2121), the kidney-shaped aperture (2121) extending in the axial direction;

the drive assembly (22) comprises a shaft (221) and at least two groups of link mechanisms (222), wherein the link mechanisms (222) comprise a first link (2221) and a second link (2222), and the shaft (221) is connected with the waist-shaped hole (2121) in a penetrating way; one end of the first connecting rod (2221) is hinged to a fixed position, and the other end of the first connecting rod is hinged to the shaft lever (221); one end of the second connecting rod (2222) forms the driving end and is used for being hinged to the valve core (11), and the other end of the second connecting rod is hinged to the shaft rod (221).

5. Trigger structure for a metered dose atomizing device according to claim 4, characterized in that two sets of said linkage (222) are symmetrically arranged with respect to said axis.

6. The trigger structure for a quantitative atomizer according to claim 4, wherein one end of the rod body of the second link (2222) is connected with a connecting member (22221), the connecting member (22221) constitutes the driving end, one end thereof is hinged to the valve core (11), and the other end thereof cooperates with the limiting member (32) to achieve the limiting or the disengaging.

7. Trigger structure for a dosing and atomizing device according to claim 1, characterized in that said atomizing trigger mechanism (3) comprises a button return elastic member (33) having one end connected to said second button member (31) and the other end in a stopped state, said button return elastic member (33) being adapted to return said second button member (31).

8. Trigger structure for a dosing device according to claim 1, characterized in that the stop (32) comprises a first abutment wall (321) and a second abutment wall (322); when the driving end is limited to the limiting piece (32), the first abutting wall (321) and the second abutting wall (322) are respectively abutted to two surface walls of the driving end.

9. Trigger structure for a quantitative atomizing device according to claim 1, characterized in that said atomizing trigger mechanism (3) comprises an engagement member (34) rotatably connected to a first connecting shaft (41) of said quantitative atomizing device, said second button member (31) and said stopper member (32) being respectively connected to both sides of said engagement member (34);

when the second button piece (31) is pressed, the second button piece (31) moves and drives the connecting piece (34) to rotate so as to change the position of the limiting piece (32) in the circumferential direction of the connecting piece (34), and the limiting piece (32) is matched with the driving end to achieve limiting or separation.

10. Trigger structure for a quantitative atomizing device according to claim 9, characterized in that the engagement member (34) is provided with a first connecting arm (341) and a second connecting arm (342), the first connecting arm (341) and the second connecting arm (342) being uniformly distributed along the circumferential direction of the engagement member (34); the second button piece (31) is connected to the first connecting arm (341), and the limiting piece (32) is connected to the second connecting arm (342).

11. A dosing and atomizing device, characterized by comprising a valve core (11) and a triggering mechanism according to any one of claims 1-10, the driving end of the driving assembly (22) being connected to the valve core (11).