Quantitative atomization device

Abstract

The present invention relates to a quantitative atomization device, comprising: a bag valve assembly; the bag valve assembly includes a valve core and a first elastic member; a liquid inlet triggering mechanism, including a first button member and a driving assembly, wherein the driving end of the driving assembly is connected to the valve core; an atomization triggering mechanism, including a second button member and a limiting member; when an external force presses the first button member, the first button member drives the driving end to move, which drives the valve core to move and compresses the first elastic member, and the driving end stops when it moves to the limiting member, and the valve core is located in a liquid inlet position to trigger liquid inlet; when an external force presses the second button member, the limiting member moves to release the limit, and the first elastic member rebounds to drive the valve core to move to an atomization position and drive the driving end to reset to trigger atomization. In the quantitative atomization device of the present invention, atomization will not be triggered if the second button member is not pressed when liquid inlet is completed, thereby avoiding waste of liquid medicine and failure of the quantitative dosage function due to improper operation, thereby ensuring that accurate metered drug administration can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a quantitative atomization device. Background Art

[0002] Oral and nasal inhalation is a drug delivery method that requires drug-device coordination and is an important route for treating a variety of pulmonary and systemic diseases. Nebulized drug delivery requires the use of a nebulizer during inhalation, placing higher demands on the inhaler for optimal drug delivery efficiency and therapeutic efficacy.

[0003] At present, the bag-valve nebulizer device has the advantages of being portable and ready to use. The nebulizer device forms a bag-valve structure by pre-filling the drug solution and high-pressure gas. The built-in nebulizer chip atomizes the drug solution into fine drug aerosol for the treatment of upper respiratory tract diseases.

[0004] The patent with application number 202121399318.3 is an improvement based on the existing bag-valve atomizer device. The atomized particles are refined by optimizing the atomizer chip, and the metering valve is added to realize the quantitative drug delivery of the atomizer device. However, when the atomizer device is in use, after the liquid inlet is triggered by rotating the upper cover, the button can be pressed when the outlet starts to spray droplets to stop the liquid inlet and trigger the spray. During the initial atomization process, the button must be pressed when the outlet starts to spray droplets, resulting in waste of liquid medicine. In addition, the atomizer device is complicated to operate. If the user does not operate according to the operating requirements, the atomizer device will be in a liquid-inlet state and continue to spray, resulting in the failure of the quantitative dosage function, and the user cannot accurately dose the medicine. Summary of the Invention

[0005] Based on the above-mentioned defects in the prior art, the purpose of the present invention is to provide a quantitative atomization device, which will not trigger atomization if the second button is not pressed when the liquid is filled, thereby avoiding waste of liquid medicine and failure of the quantitative dosage function due to improper operation, thereby ensuring that accurate metered drug delivery can be achieved.

[0006] To this end, the present invention provides the following technical solutions.

[0007] The present invention provides a quantitative atomization device, which comprises:

[0008] A bag valve assembly for storing liquid and spraying it quantitatively; the bag valve assembly includes a valve core and a first elastic member, wherein the first elastic member abuts against a surface wall of one end of the valve core;

[0009] A liquid inlet trigger mechanism, comprising a first button member and a drive assembly that cooperate with each other, wherein a drive end of the drive assembly is connected to the valve core;

[0010] An atomization trigger mechanism, comprising a second button component and a limiting component that cooperate with each other;

[0011] When an external force presses the first button member, the first button member moves to drive the driving end to move, and the driving end drives the valve core to move and compresses the first elastic member. The driving end stops when it moves to the limit member. At this time, the valve core is located in the liquid inlet position to trigger liquid inlet.

[0012] When an external force presses the second button component, the limit component moves to release the limit, and the first elastic component rebounds to drive the valve core to move to the atomization position and drive the driving end to reset synchronously to trigger atomization.

[0013] Preferably, the liquid inlet trigger mechanism and the atomization trigger mechanism are located above the bag valve assembly.

[0014] Preferably, the first button member includes a waist-shaped hole, and the waist-shaped hole extends along the axial direction of the valve core;

[0015] The driving assembly includes a shaft and at least two sets of connecting rod mechanisms, the connecting rod mechanisms include a first connecting rod and a second connecting rod, the shaft is connected to the waist-shaped hole; one end of the first connecting rod is hinged to a fixed position, and the other end is hinged to the shaft; one end of the second connecting rod constitutes the driving end and is hinged to the valve core, and the other end is hinged to the shaft.

[0016] Preferably, the atomization trigger mechanism includes a second elastic member, one end of which is connected to the second button member, and the other end is in a stopped state, and the second elastic member is used to reset the second button member.

[0017] Preferably, the quantitative atomization device includes a mounting member, and the liquid inlet trigger mechanism and the atomization trigger mechanism are both mounted on the mounting member.

[0018] Preferably, the mounting member is provided with a first connecting shaft; the atomization trigger mechanism includes a connecting member rotatably connected to the first connecting shaft, and the second button member and the limiting member are respectively connected to two sides of the connecting member;

[0019] When the second button is pressed, the second button moves and drives the connecting member to rotate to change the circumferential position of the limiting member on the connecting member, and the limiting member cooperates with the driving end to achieve the limiting or releasing the limiting.

[0020] Preferably, the bag valve assembly further comprises:

[0021] A tank for containing compressed gas;

[0022] a bag body, located in the tank body and used to contain liquid;

[0023] a valve body, which is provided with a first through hole and one end of which extends into the bag body;

[0024] a metering chamber connected to the valve body and having a second through hole, the second through hole being in communication with the chamber of the valve body and being opposite to the first through hole;

[0025] One end of the valve core extends into the valve body with clearance fit between the two, and the other end is located outside the tank body; the valve core is provided with a first concave cavity and a third through hole distributed in sequence along its axial direction;

[0026] Wherein, when the quantitative atomization device is in an initial state, the inner wall of the valve body closes the first concave cavity;

[0027] When the quantitative atomization device is in a liquid-intake state, the first through hole, the first concave cavity, and the second through hole are sequentially connected to form a liquid inlet channel, and the liquid in the bag body flows into the metering cavity through the liquid inlet channel under the pressure of the compressed gas;

[0028] When the quantitative atomization device is in an atomizing state, the second through hole and the third through hole are connected to form a liquid outlet channel, and the liquid in the metering chamber enters the valve core through the liquid outlet channel and is then atomized and sprayed out.

[0029] Preferably, the metering chamber comprises:

[0030] a first partition plate having a fourth through hole;

[0031] a second partition plate having a fifth through hole; the first partition plate and the second partition plate are sequentially distributed in a direction toward the second through hole and separate the metering cavity into a first chamber, a second chamber, and a third chamber;

[0032] a metering plate movably located in the second chamber, with a peripheral side wall of the metering plate abutting against an inner wall of the second chamber;

[0033] a third elastic member, one end of which is connected to the cavity wall of the first cavity and the other end of which is connected to the metering plate;

[0034] an air pressure balance channel, which is in communication with the first chamber and the outside respectively;

[0035] Wherein, when the quantitative atomization device is in an initial state, the third elastic member passes through the fourth through hole and presses the metering plate against the second partition plate.

[0036] Preferably, a filter is provided at the connection point between the air pressure balance channel and the atmosphere.

[0037] Preferably, the bag-valve assembly further comprises a mounting seat for connecting and sealing the tank body and the bag body and for connecting and sealing the bag body and the valve body.

[0038] Preferably, a first limiting structure is provided in the valve body, for limiting the stop position of the valve core when it moves along the first direction.

[0039] Preferably, the mounting seat is provided with a second limiting structure for limiting the stop position of the valve core when it moves along the second direction.

[0040] Preferably, the mounting cover is provided on the periphery of the valve core, the liquid inlet trigger mechanism and the atomization trigger mechanism.

[0041] Preferably, the mounting member is provided with a sixth through hole, which is opposite to the outlet position of the valve core; one end of the mounting member is open to form a suction channel.

[0042] Preferably, the mounting member is provided with an air inlet and an air outlet, the air inlet is communicated with the outside, and the air outlet is communicated with the suction channel.

[0043] Preferably, the bag valve assembly further includes an atomization chip, which is arranged at the outlet end of the valve core.

[0044] The present invention has the following technical effects:

[0045] The present invention provides a quantitative atomization device, which triggers the bag valve assembly to inflate liquid via a liquid inlet trigger mechanism and triggers the bag valve assembly to spray via an atomization trigger mechanism, wherein the triggering of liquid inlet and triggering of atomization are performed separately and independently. The quantitative atomization device of the present invention is simple and stable to operate. If the second button is not pressed when liquid inlet is completed, atomization will not be triggered, thereby avoiding waste of liquid medicine and preventing the quantitative dosage function from being inoperative due to improper operation, which causes the quantitative atomization device to be in a state of simultaneous liquid inlet and spraying. The device can improve the stability of drug administration and ensure that precise metered drug administration can be achieved. In addition, the first elastic member provides instantaneous reset power to the valve core, and the valve core reset structure is simple and can spray quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a schematic diagram of the explosion structure of the quantitative atomization device of the present invention;

[0047] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0048] Figure 3 It is an exploded view of the local structure of the liquid inlet trigger mechanism of the present invention;

[0049] Figure 4 Schematic diagram of the explosion structure of the atomization trigger mechanism of the present invention;

[0050] Figure 5It is a schematic diagram of the partial three-dimensional structure of the quantitative atomization device of the present invention in an initial state;

[0051] Figure 6 This is a cross-sectional view of the structure of the quantitative atomization device of the present invention in its initial state. Figure 1 ;

[0052] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0053] Figure 8 This is a cross-sectional view of the structure of the quantitative atomization device of the present invention in its initial state. Figure 2 ;

[0054] Figure 9 for Figure 8 Enlarged view of point C in the middle;

[0055] Figure 10 This is a cross-sectional view of the structure of the quantitative atomization device of the present invention when it is in the liquid-injecting state. Figure 1 ;

[0056] Figure 11 for Figure 10 Enlarged view of point D in the middle;

[0057] Figure 12 This is a cross-sectional view of the structure of the quantitative atomization device of the present invention when it is in the liquid-injecting state. Figure 2 ;

[0058] Figure 13 for Figure 12 Enlarged view of point E in the middle;

[0059] Figure 14 This is a cross-sectional view of the structure of the quantitative atomization device of the present invention when it is in the atomization state Figure 1 ;

[0060] Figure 15 for Figure 14 Enlarged view of point F in the middle;

[0061] Figure 16 This is a cross-sectional view of the structure of the quantitative atomization device of the present invention when it is in the atomization state Figure 2 ;

[0062] Figure 17 for Figure 16 Enlarged view of point G in the middle;

[0063] Figure 18 A structural cross-sectional view of a mounting member in one embodiment of the present invention;

[0064] Figure 19 It is a structural cross-sectional view of a mounting member in another embodiment of the present invention.

[0065] Description of Reference Numerals

[0066] 100. Quantitative atomization device;

[0067] 1. Bag valve assembly;

[0068] 11. Valve core; 111. First concave cavity; 112. Third through hole; 12. First elastic member; 13. Tank body; 14. Bag body; 15. Valve body; 151. First through hole; 152. First position-limiting structure; 16. Metering chamber; 161. Second through hole; 162. First partition; 1621. Fourth through hole; 163. Second partition; 1631. Fifth through hole; 164. First chamber; 165. Second chamber; 166. Third chamber; 167. Metering plate; 168. Third elastic member; 169. Air pressure balance channel; 1691. Filter element; 17. Mounting seat; 171. Second position-limiting structure; 18. Atomizer chip;

[0069] 2. Liquid inlet trigger mechanism;

[0070] 21. First button member; 211. First button body; 212. First connecting portion; 2121. Waist-shaped hole; 22. Driving assembly; 221. Shaft; 222. Link mechanism; 2221. First connecting rod; 2222. Second connecting rod; 22221. Connecting member;

[0071] 3. Atomization trigger mechanism;

[0072] 31. Second button member; 311. Second button body; 312. Abutment portion; 313. Second connecting portion; 32. Positioning member; 321. First abutment wall; 322. Second abutment wall; 33. Second elastic member; 34. Connecting member; 341. First connecting arm; 342. Second connecting arm;

[0073] 4. Mounting parts;

[0074] 41. First connecting axis; 42. Sixth through hole; 43. Air inlet; 44. Air outlet; 45. Second concave cavity; 46. Second connecting axis; 47. Mounting hole. DETAILED DESCRIPTION

[0075] To make the technical solutions and beneficial effects of the present invention more clearly understood, the following is a detailed description by listing specific embodiments. Unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application belongs.

[0076] In the description of the present invention, unless otherwise expressly defined, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of simplifying the description of the present invention, and do not indicate that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and should not be understood as a limitation to the present invention.

[0077] In this disclosure, the terms "first" and "second" are used solely for descriptive clarity and should not be construed as indicating the relative importance of the features indicated or the quantity of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly include at least one such feature. In the description of this disclosure, "plurality" means at least two, and "several" means at least one, unless expressly specified otherwise.

[0078] In the present invention, unless otherwise expressly defined, the terms "installed," "connected," "connect," "fixed," and "disposed" should be understood broadly. For example, "connection" can mean fixed connection, removable connection, or integral molding; it can be mechanical or electrical; it can be direct or indirect through an intermediary; it can also refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0079] In the present invention, unless otherwise clearly defined, when a first feature is “on,” “above,” “above,” “above,” “below,” “below,” or “below” a second feature, the first feature and the second feature may be in direct contact, or the first feature and the second feature may be in indirect contact via an intermediate medium. Moreover, when a first feature is “on,” “above,” or “above” a second feature, it may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than the horizontal height of the second feature. When a first feature is “below,” “below,” or “below” a second feature, it may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0080] The terms "front", "back", "left", "right", "up" and "down" mentioned in this invention are all in the Figure 1 The markings in the table shall prevail.

[0081] The following is based on Figures 1 to 19 The quantitative atomization device of the present invention is described in detail.

[0082] In this embodiment, if Figures 1 to 6 As shown, the quantitative atomization device 100 includes a bag valve assembly 1, a liquid inlet trigger mechanism 2 and an atomization trigger mechanism 3. Figure 6 As shown, the bag-valve assembly 1 is used to store liquid and spray it in a fixed amount. The bag-valve assembly 1 includes a valve core 11 and a first elastic member 12. The first elastic member 12 abuts against the surface wall of one end of the valve core 11. The liquid inlet trigger mechanism 2 includes a matching first button member 21 and a drive assembly 22. The drive end of the drive assembly 22 is connected to the valve core 11. The liquid inlet trigger mechanism 2 is used to trigger the bag-valve assembly 1 to inflate liquid. The atomization trigger mechanism 3 includes a matching second button member 31 and a limit member 32. The atomization trigger mechanism 3 is used to trigger the bag-valve assembly 1 to spray.

[0083] like Figures 6 to 9 As shown, when the quantitative atomization device 100 is in the initial state, there is no limit relationship between the limiting member 32 and the driving end of the driving assembly 22. Figures 10 to 13 As shown, when an external force presses the first button member 21, the first button member 21 can move. The moving first button member 21 can drive the driving end to move in a first direction axially of the valve core 11. The driving end drives the valve core 11 to move, and the moving valve core 11 compresses the first elastic member 12. When the driving end moves to the limit member 32 and stops, the external force driving the first button member 21 is removed. At this time, the valve core 11 also moves to the liquid inlet position and stops, and the bag valve assembly 1 begins to fill with liquid. It should be understood that during the process of the driving end moving to the limit member 32, the first button member 21 can remain in a pressed state, and the movement of the first button member 21 can be continuously maintained by applying an external force. Of course, the first button member 21 can also be driven by an external force to move a certain distance, and then the external force is removed, and the mechanical structure of the liquid inlet trigger mechanism 2 (such as a spring to provide power) drives the first button member 21 to continue moving, so that the driving end stops when it moves to the limit member 32.

[0084] like Figures 14 to 17 As shown, after the liquid is filled, when the spray needs to be triggered, an external force presses the second button component 31, and the second button component 31 can move. The moved second button component 31 causes the limit component 32 to move to disengage from the driving end. After the second button component 31 is released from the limit, the valve core 11 moves in a second direction opposite to the first direction under the rebound of the first elastic component 12. Since the valve core 11 is connected to the driving end of the driving assembly 22, the valve core 11 can drive the driving end to reset synchronously. When the valve core 11 moves to the atomization position, the bag valve assembly 1 sprays quantitatively.

[0085] By adopting the above technical solution, the bag valve assembly 1 is triggered to inflate liquid through the liquid inlet trigger mechanism 2, and the bag valve assembly 1 is triggered to spray through the atomization trigger mechanism 3. The triggering of liquid inlet and triggering of atomization are performed separately and independently. The quantitative atomization device 100 of this solution is simple and stable to operate. If the second button 31 is not pressed when liquid inlet is completed, atomization will not be triggered, thereby avoiding waste of liquid medicine and preventing the quantitative atomization device from being in a state of simultaneous liquid inlet and spraying due to improper operation, which may lead to the failure of the quantitative dosage function. It can improve the stability of drug administration and ensure that accurate metered drug administration can be achieved. In addition, the first elastic member 12 provides instantaneous reset power to the valve core 11, and the reset structure of the valve core is simple and can spray quickly.

[0086] In one embodiment, the liquid inlet trigger mechanism 2 and the atomization trigger mechanism 3 are located above the bag valve assembly 1 to facilitate user operation.

[0087] In one embodiment, if Figure 3 and Figure 5 As shown, the first button member 21 includes a waist-shaped hole 2121 extending axially along the valve core 11. The drive assembly 22 includes a shaft 221 and two linkages 222. The linkages 222 include a first linkage 2221 and a second linkage 2222. The shaft 221 extends through the waist-shaped hole 2121. One end of the first linkage 2221 is hinged to a fixed position, and the other end is hinged to the shaft 221. The second linkage 2222 has one end forming the driving end and hinged to the valve core 11, and the other end is hinged to the shaft 221. In this embodiment, the liquid inlet trigger mechanism 2 is simple in structure and easy to operate. The waist-shaped hole 2121 limits the movement direction and distance of the shaft 221, thereby driving the valve core 11 in a fixed manner.

[0088] by Figure 1 Taking the direction shown in FIG. 2 as an example, in this embodiment, the first connecting rod 2221 is located above the second connecting rod 2222, and the movement direction of the first button member 21 is perpendicular to the movement direction of the second button member 31. Figure 7 and Figure 11 As shown, when the first button 21 is pressed to the left, the first button 21 pushes the shaft 221 to the left, and the first connecting rod 2221 and the second connecting rod 2222 are hinged to the ends of the shaft 221 and move to the left along with the shaft 221. Since one end of the first connecting rod 2221 is fixed, the hinge point of the second connecting rod 2222 and the valve core 11 moves downward. At this time, the shaft 221 moves downward along the waist-shaped hole 2121, thereby driving the valve core 11 to move downward and the first elastic member 12 is compressed until the second connecting rod 2222 stops moving when it moves to the limiter 32, triggering the liquid inlet. Figure 13 and Figure 17 As shown, when the second button 31 is pressed backward to make the second connecting rod 2222 break away from the limit of the limit member 32, as shown in FIG. Figure 11 and Figure 15 As shown, the first elastic member 12 rebounds, causing the valve core 11 to move upward. The valve core 11 pushes the second connecting rod 2222 upward, causing the drive assembly 22 to reset. At the same time, the shaft 221 pushes the first button member 21 to the right, causing the first button member 21 to reset to the right. At this time, the shaft 221 moves upward along the waist-shaped hole 2121, triggering atomization. It should be understood that the movement scheme of the valve core 11 is not limited to this. If the first connecting rod 2221 is located below the second connecting rod 2222, then when the first button member 21 is pressed to the left, the valve core 11 moves upward to trigger liquid inlet, and when the second button member 31 is pressed, the valve core 11 moves downward to trigger atomization.

[0089] Further, if Figure 3 and Figure 5 As shown, the two sets of connecting rod mechanisms 222 are symmetrically arranged about the axial direction of the valve core 11, and the two second connecting rods 2222 are symmetrically hinged on both sides of the valve core 11, which can stably drive the reciprocating motion of the valve core 11.

[0090] It should be understood that the number of the connecting rod mechanisms 222 can also be three or even more. The assembly relationship of the multiple connecting rod mechanisms 222 is slightly complicated, and it is sufficient to drive the reciprocating motion of the valve core 11 through the linkage relationship.

[0091] Further, if Figure 9 、 Figure 13 and Figure 17 As shown, one end of the rod body of the second connecting rod 2222 is connected to a connecting member 22221. The connecting member 22221 constitutes the driving end. One end of the connecting member 22221 is hinged to the valve core 11, and the other end cooperates with the limiting member 32 to achieve or release the limiting. The second connecting rod 2222 is constructed as a structure with a detachable rod body and connecting member 22221 to simplify processing.

[0092] Further, if Figure 3 As shown, the first button member 21 includes a first button body 211 and a first connecting portion 212 connected to each other, a waist-shaped hole 2121 is set on the first connecting portion 212, and the thickness of the first button body 211 is greater than the thickness of the first connecting portion 212. In this way, the first button body 211 has a larger area for the user to press, which is convenient for operation. The first connecting portion 212 is thinner and the depth of the waist-shaped hole 2121 is smaller, so as to reduce the friction resistance generated by the waist-shaped hole 2121 on the shaft rod 221 when it moves.

[0093] In one embodiment, if Figure 4 、 Figure 5 、 Figure 13 and Figure 17As shown, the atomization trigger mechanism 3 includes a second elastic member 33, one end of which is connected to the second button member 31 and the other end is in a stopped state. The second elastic member 33 is used to reset the second button member 31, with a simple structure and fast reset.

[0094] In one embodiment, if Figure 4 As shown, the limiting member 32 includes a first abutting wall 321 and a second abutting wall 322; Figure 13 As shown, when the driving end is limited to the limiting member 32, the first abutment wall 321 and the second abutment wall 322 respectively abut against the two surface walls of the driving end, so as to stably limit the driving end of the driving component 22, and when the second button member 31 is pressed, the driving end of the driving component 22 can also be easily disengaged from the limiting member 32.

[0095] Further, if Figure 5 and Figure 13 As shown, the limiting member 32 is used to limit the connecting member 22221 of the second connecting rod 2222. The connecting member 22221 is cylindrical, the first abutting wall 321 is used to abut the outer wall of the connecting member 22221 on the side facing away from the first elastic member 12, and the second abutting wall 322 is used to abut the end surface of the connecting member 22221. Since the connecting member 22221 is cylindrical and the surface of the first abutting wall 321 is arc-shaped, the first abutting wall 321 can stably abut the outer wall of the connecting member 22221 on the side facing away from the first elastic member 12.

[0096] In one embodiment, if Figure 1 、 Figure 6 and Figure 9 As shown, the quantitative atomization device 100 includes a mounting member 4 , and the liquid inlet trigger mechanism 2 and the atomization trigger mechanism 3 are both mounted on the mounting member 4 .

[0097] Further, if Figure 9 As shown, the mounting member 4 is provided with a first connecting shaft 41; the atomization trigger mechanism 3 includes a connecting member 34, which is 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 connecting member 34. Figure 9 As shown, when the quantitative atomization device 100 is in the initial state, the limiting member 32 and the driving end of the driving assembly 22 (such as the connecting member 22221) are staggered in the axial direction of the valve core 11, so that Figure 11 As shown, when the first button member 21 moves under 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. Figure 13As shown, the driving end of the driving component 22 moves toward the position of the limiting member 32. When the driving end of the driving component 22 contacts the limiting member 32, the limiting member 32 is pressed by the driving end of the driving component 22, and the limiting member 32 is slightly deformed and / or the connecting member 34 is slightly rotated due to the force, so that the driving end is limited by the limiting member 32. When the driving end is limited by the limiting member 32, a mechanical collision sound is emitted, which can prompt the user to complete the triggering of liquid injection, and the user can release the first button member 21. After the liquid injection is completed, as shown in FIG. Figure 17 As shown, external force is applied to the second button member 31. When the second button member 31 moves, it presses against one side of the connecting member 34, causing the connecting member 34 to rotate. The connecting member 34 drives the limiting member 32 to rotate together, changing the position of the limiting member 32 in the circumferential direction of the connecting member 34, so that the driving end of the driving assembly 22 can be separated from the limiting member 32. The atomization trigger mechanism 3 has a simple structure and is easy to operate, and can quickly limit or release the driving end of the driving assembly 22.

[0098] Further, if Figure 4 and Figure 9 As shown, the connecting member 34 is provided with a first connecting arm 341 and a second connecting arm 342, which are evenly distributed along the circumference of the connecting member 34; the second button member 31 is connected to the first connecting arm 341, and the first connecting arm 341 is used to increase the torque 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 used to increase the torque of the limiting member 32 on the connecting member 34, thereby reducing the external force applied to the first button member 21 when triggering liquid inlet and the external force applied to the second button member 31 when triggering atomization, thereby facilitating easy operation. Furthermore, the second button member 31 abuts against the first connecting arm 341, resulting in a simple structure.

[0099] Further, if Figure 2 、 Figure 4 and Figure 9 As shown, the mounting member 4 is provided with a second concave cavity 45, and the second button member 31 includes a second button body 311, an abutting portion 312, and a second connecting portion 313 connected in sequence. The second elastic member 33 is sleeved on the outer periphery of the second connecting portion 313, and one end of the second button body 311 extends into the second concave cavity 45. The abutting portion 312 and the second elastic member 33 are located in the second concave cavity 45. The two ends of the second elastic member 33 abut against the abutting portion 312 and the inner wall of the second concave cavity 45 respectively. One end of the second connecting portion 313 passes through the second concave cavity 45 and is connected to the first connecting arm 341. Figure 9 As shown, when the second button member 31 is in an unpressed state, the second elastic member 33 abuts the abutting portion 312 against the inner wall of the second cavity 45 close to the second button body 311; Figure 17As shown, when the second button 31 is pressed by an external force, the abutting portion 312 compresses the second elastic member 33; when the external force is removed, the second elastic member 33 rebounds to restore the abutting portion 312. Furthermore, one end of the second connecting portion 313 abuts against the first connecting arm 341.

[0100] Further, if Figure 9 and Figure 11 As shown, the mounting member 4 is provided with a second connecting shaft 46 , and one end of the first connecting rod 2221 of the driving assembly 22 is hinged to the second connecting shaft 46 .

[0101] Further, if Figure 2 and Figure 6 As shown, the mounting member 4 is provided with a mounting hole 47 , the first button member 21 is movably mounted in the mounting hole 47 , and the second button member 31 is movably mounted in the second cavity 45 .

[0102] In one embodiment, if Figure 6 As shown, the mounting member 4 is covered on the periphery of the valve core 11 , the liquid inlet trigger mechanism 2 and the atomization trigger mechanism 3 , and the assembly is simple and beautiful.

[0103] Further, if Figure 11 、 Figure 18 and Figure 19 As shown, the mounting member 4 is provided with a sixth through hole 42, which is opposite the outlet of the valve core 11. One end of the mounting member 4 is open to form an inhalation passage. In this way, in addition to mounting the liquid inlet trigger mechanism 2 and the atomization trigger mechanism 3, the mounting member 4 also forms an inhalation passage. When using the metered-dose atomization device 100, the user simply aligns their mouth and nose with the open end of the mounting member 4, which facilitates the miniaturization of the metered-dose atomization device 100.

[0104] Further, if Figure 6 As shown, the mounting member 4 is provided with an air inlet 43 and an air outlet 44. The air inlet 43 is connected to the outside, and the air outlet 44 is connected to the inhalation channel, providing an air inlet channel when the user inhales the spray. The outside air passes through the air inlet 43 and the air outlet 44 in turn and enters the user's mouth and nose.

[0105] Further, in one embodiment, if Figure 18 As shown, the air inlet 43 is located on the side wall of the mounting member 4, and the opening of the end of the mounting member 4 forms the air outlet 44. In another embodiment, as shown in FIG. Figure 19 As shown, the air inlet 43 is located on the side wall of the mounting member 4, and the air outlet 44 is provided near the sixth through hole 42. The airflow direction of the air outlet 44 is the same as that of the sixth through hole 42. It should be understood that the shape, number, and position of the air inlet 43 and the air outlet 44 can be arbitrarily set.

[0106] In one embodiment, if Figure 1、 Figure 6 and Figure 7 As shown, the bag-valve assembly 1 further includes a tank body 13, a bag body 14, a valve body 15, and a metering chamber 16. The tank body 13 is used to contain compressed gas, the bag body 14 is located within the tank body 13 and is used to contain liquid, the valve body 15 is provided with a first through hole 151, one end of which extends into the bag body 14, the metering chamber 16 is connected to the valve body 15 and is provided with a second through hole 161, the second through hole 161 is in communication with the chamber of the valve body 15 and is located opposite to the first through hole 151. One end of the valve core 11 extends into the valve body 15 with a clearance fit, and the other end is located outside the tank body 13. The valve core 11 is provided with a first concave cavity 111 and a third through hole 112 distributed sequentially along its axial direction.

[0107] When the quantitative atomization device 100 is in the initial state, as shown in FIG. Figure 7 As shown, the inner wall of the valve body 15 abuts against the contour of the opening of the first concave cavity 111 to seal the first concave cavity 111. The inner wall of the valve core 11 seals the first through hole 151 of the valve body 15, preventing the liquid in the bag 14 from entering the first concave cavity 111 through the first through hole 151 of the valve body 15. In addition, the third through hole 112 of the valve core 11 and the second through hole 161 of the metering cavity 16 are positioned opposite each other and are in a connected state.

[0108] When the first button 21 is pressed to trigger the quantitative atomization device 100 to be in the liquid-intake state, the valve core 11 moves to the liquid-intake position. Figure 11 As shown, the first through hole 151, the first concave cavity 111 and the second through hole 161 are connected in sequence to form a liquid inlet channel, the inner wall of the valve body 15 closes 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 inlet channel under the compression of the compressed gas in the tank body 13.

[0109] After the liquid is added, when the second button 31 is pressed to trigger the quantitative atomization device 100 to be in the atomization state, Figure 15 As shown, the valve core 11 moves in the reverse direction and resets, the second through hole 161 and the third through hole 112 are connected to form a liquid outlet channel, and the liquid in the metering chamber 16 enters the valve core 11 through the liquid outlet channel and is sprayed out in atomized form.

[0110] By adopting the above technical solution, a metering chamber 16 is provided to achieve quantitative atomization. By optimizing the structure of the liquid inlet and liquid outlet channels of the bag valve assembly 1 and separating the metering chamber 16 from the bag body 14, the liquid intake and atomization processes are completely separated, thereby avoiding the quantitative atomization device being in a state of simultaneous liquid intake and spraying due to improper operation. In addition, the overall structure of the bag valve assembly 1 is simple and stable, and the liquid intake and atomization operation processes are simple.

[0111] Further, if Figure 7As shown, the diameter of the first through hole 151 , the diameter of the second through hole 161 , the diameter of the third through hole 112 and the height of the first concave cavity 111 are equal.

[0112] Further, if Figure 7 As shown, the distance between the center of the first cavity 111 of the valve core 11 and the center of the third through hole 112 is greater than or equal to the hole diameter of the third through hole 112 to avoid the situation where liquid is simultaneously flowing into and out of the metering cavity 16.

[0113] In one embodiment, the first cavity 111 is an annular cavity, which reduces the accuracy requirement on the assembly position of the valve core 11 .

[0114] In one embodiment, if Figure 7 As shown, metering chamber 16 includes a first partition 162, a second partition 163, a metering plate 167, a third elastic member 168, and an air pressure balance passage 169. First partition 162 is provided with a fourth through-hole 1621, and second partition 163 is provided with a fifth through-hole 1631. The first and second partitions 162, 163 are arranged sequentially toward second through-hole 161, dividing metering chamber 16 into a first chamber 164, a second chamber 165, and a third chamber 166. Metering plate 167 is movably positioned within second chamber 165, with its peripheral sidewall abutting the inner wall of second chamber 165. One end of third elastic member 168 is connected to the wall of first chamber 164, and the other end is connected to metering plate 167. The air pressure balance channel 169 is connected to the first chamber 164 and the outside respectively. The air pressure balance channel 169 is used to balance the internal and external air pressure of the space on the side of the metering plate 167 facing the third elastic member 168 during the liquid intake and atomization process, so that the metering plate 167 can move back and forth smoothly.

[0115] like Figure 7 As shown, when the metered-quantity atomization device 100 is in the initial state, the third 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. Figure 11 As shown, when the metering atomization device 100 is in the liquid filling state, the liquid in the bag body 14 flows into the metering chamber 16 through the liquid inlet channel under the pressure of the compressed gas in the tank body 13, and the liquid pushes the metering plate 167 to move toward the first partition 162 and the third elastic member 168 is compressed until the metering plate 167 abuts against the first partition 162, completing the liquid filling. During this process, the air in the space on the side of the metering plate 167 toward the third elastic member 168 is discharged to the outside through the air pressure balance channel 169.

[0116] like Figure 15As shown, when the metered-dose atomization device 100 is in the atomization state, the second through hole 161 and the third through hole 112 are connected to form a liquid outlet channel. The rebound of the third elastic member 168 pushes the metering plate 167 toward the second partition 163, squeezing the liquid in the metering chamber 16 into the valve core 11 until the metering plate 167 abuts the second partition 163, completing the atomization. During this process, the outside air enters the space on the side of the metering plate 167 facing the third elastic member 168 through the air pressure balance channel 169. The volume of the second chamber 165 between the first partition 162 and the second partition 163 corresponds to the amount of liquid inlet and the amount of atomization. The size of the second chamber 165 can be adjusted to meet different drug delivery requirements.

[0117] Further, if Figure 2 As shown, a filter 1691 is provided at the connection between the air pressure balance channel 169 and the atmosphere to filter the air from the outside entering the air pressure balance channel 169 to prevent impurities from entering the metering cavity 16 and affecting the movement of the metering plate 167.

[0118] It should be understood that the pressure in the tank body 13 is greater than the pressure required for the metering plate 167 to move from the second partition 163 to the first partition 162, so as to facilitate smooth liquid inflow.

[0119] It should be understood that before use, the metered atomization device 100 needs to repeat the liquid filling and atomization several times to exhaust the air in the valve core 11 and the metering chamber 16. This operation can be completed before leaving the factory or the user can be instructed to complete it after leaving the factory.

[0120] It should be understood that Figure 11 As shown, after the liquid is filled, the second chamber 165 and the third chamber 166 are filled with liquid, and the volume of the liquid sprayed during atomization is equal to the volume of the liquid in the second chamber 165. Then, after the atomization is completed, the liquid in the third chamber 166 at least partially remains in the valve core 11. After multiple liquid injections and atomizations, when the quantitative atomization device 100 is in the initial state, the liquid level in the valve core 11 is equal to the liquid level in the third chamber 166, and the residual liquid in the valve core 11 maintains a stable liquid level.

[0121] In the above technical solution, the overall structure of the metering chamber 16 is simple, and it cooperates with the metering plate 167 through the third elastic member 168 to achieve instantaneous liquid inflow and instantaneous atomization.

[0122] In one embodiment, if Figure 1 and Figure 6 As shown, the bag-valve assembly 1 further includes a mounting seat 17 for connecting and sealing the tank body 13 and the bag body 14 and for connecting and sealing the bag body 14 and the valve body 15 .

[0123] Further, if Figure 6As shown, a first limiting structure 152 is provided within the valve body 15 to limit the stop position of the valve core 11 when it moves in the first direction, that is, to limit the liquid inlet position of the valve core 11. Specifically, the first limiting structure 152 is an annular protrusion. When liquid inlet is triggered, the valve core 11 moves in the first direction, and the first elastic member 12 is compressed. The valve core 11 moves until it abuts the first limiting structure 152 and stops moving.

[0124] Further, if Figure 6 and Figure 7 As shown, the mounting base 17 is provided with a second limiting structure 171, which is used to limit the stop position of the valve core 11 when it moves in the second direction, that is, to limit the atomization position of the valve core 11. The atomization position of the valve core 11 is also the initial position of the valve core 11. When atomization is triggered, the first elastic member 12 rebounds and passes through the first limiting structure 152, pushing the valve core 11 to move in the opposite direction. The valve core 11 moves until it abuts the second limiting structure 171 and stops moving. At this time, the metered-dose atomization device 100 returns to its initial state.

[0125] Further, if Figure 6 and Figure 7 As shown, the first elastic member 12 is located inside the valve body 15 for easy assembly.

[0126] In one embodiment, Figure 7 As shown, the first button 21 limits the reciprocating motion of the shaft 221 through the waist-shaped hole 2121, thereby limiting the reciprocating motion of the valve core 11. In addition, as shown in FIG. Figure 6 As shown, the first limiting structure 152 and the second limiting structure 171 also provide secondary limiting for the reciprocating motion of the valve core 11 to improve the limiting effect.

[0127] In one embodiment, if Figure 7 As shown, the bag valve assembly 1 further includes an atomization chip 18, which is arranged at the outlet end of the valve core 11 to convert the liquid sprayed from the valve core 11 into an atomized aerosol.

[0128] In one embodiment, the first elastic member 12 and / or the second elastic member 33 are springs, which have a simple structure and are easy to assemble. Of course, the structure of the first elastic member 12 and / or the second elastic member 33 is not limited to this, and can also be any other structure with elasticity and restorability.

[0129] It should be understood that the above embodiments are exemplary and are not intended to encompass all possible implementations of the claims. Various modifications and variations may be made to the above embodiments without departing from the scope of this disclosure. Similarly, the various technical features of the above embodiments may be arbitrarily combined to form additional embodiments of the present invention that may not be explicitly described. Therefore, the above embodiments merely illustrate several implementations of the present invention and do not limit the scope of protection of the patent of this invention.

Claims

1. A quantitative atomization device, characterized in that: The quantitative atomization device (100) comprises: A bag valve assembly (1) for storing liquid and spraying it quantitatively; the bag valve assembly (1) comprises a valve core (11) and a first elastic member (12), wherein the first elastic member (12) abuts against one end of the valve core (11); the bag valve assembly (1) comprises a tank body (13), a bag body (14) and a valve body (15), wherein the tank body (13) is used to contain compressed gas, the bag body (14) is located in the tank body (13) and is used to contain liquid, and one end of the valve body (15) extends into the bag body (14); A liquid inlet trigger mechanism (2) comprising a first button member (21) and a drive assembly (22) that cooperate with each other, wherein the drive end of the drive assembly (22) is connected to the valve core (11); An atomization trigger mechanism (3), comprising a matching second button component (31) and a limiting component (32); A mounting member (4), wherein the mounting member (4) is provided with a sixth through hole (42), and the sixth through hole (42) is opposite to the outlet position of the valve core (11); one end of the mounting member (4) is open to form a suction channel; When an external force presses the first button member (21), the first button member (21) drives the driving end to move, and the driving end drives the valve core (11) to move and compresses the first elastic member (12). The driving end stops when it moves to the limit position of the limit member (32). At this time, the valve core (11) is located at the liquid inlet position to trigger liquid inlet, and during the liquid inlet process, the liquid in the bag body (14) does not enter the valve core (11); When an external force presses the second button member (31), the limiting member (32) moves to release the limit, and the first elastic member (12) rebounds to drive the valve core (11) to move to the atomization position and drive the driving end to reset synchronously to trigger atomization. During the atomization process, liquid enters the valve core (11) and flows to the outlet of the valve core (11). The two processes of liquid intake and atomization are completely separated. When liquid intake is completed, atomization will not be triggered if the second button member (31) is not pressed.

2. The quantitative atomization device according to claim 1, characterized in that: The liquid inlet trigger mechanism (2) and the atomization trigger mechanism (3) are located above the bag valve assembly (1).

3. The quantitative atomization device according to claim 1, characterized in that: The first button member (21) comprises a waist-shaped hole (2121), and the waist-shaped hole (2121) extends along the axial direction of the valve core (11); The driving assembly (22) includes a shaft (221) and at least two groups of connecting rod mechanisms (222), wherein the connecting rod mechanisms (222) include a first connecting rod (2221) and a second connecting rod (2222), wherein the shaft (221) is connected to the waist-shaped hole (2121); one end of the first connecting rod (2221) is hinged to a fixed position, and the other end is hinged to the shaft (221); one end of the second connecting rod (2222) constitutes the driving end and is hinged to the valve core (11), and the other end is hinged to the shaft (221).

4. The quantitative atomization device according to claim 1, characterized in that: The atomization trigger mechanism (3) comprises a second elastic member (33), one end of which is connected to the second button member (31) and the other end of which is in a stopped state. The second elastic member (33) is used to reset the second button member (31).

5. The quantitative atomization device according to any one of claims 1 to 4, characterized in that: The liquid inlet trigger mechanism (2) and the atomization trigger mechanism (3) are both mounted on the mounting member (4).

6. The quantitative atomization device according to claim 5, characterized in that: The mounting member (4) is provided with a first connecting shaft (41); the atomization trigger mechanism (3) includes a connecting member (34) which is rotatably connected to the first connecting shaft (41); the second button member (31) and the limiting member (32) are respectively connected to two sides of the connecting member (34); When the second button member (31) is pressed, the second button member (31) moves and drives the connecting member (34) to rotate, so as to change the circumferential position of the limiting member (32) on the connecting member (34), and the limiting member (32) cooperates with the driving end to realize the limiting or the releasing of the limiting.

7. The quantitative atomization device according to any one of claims 1 to 4, characterized in that: The valve body (15) is provided with a first through hole (151); the bag valve assembly (1) further comprises: a metering chamber (16), which is connected to the valve body (15) and is provided with a second through hole (161), wherein the second through hole (161) is in communication with the chamber of the valve body (15) and the second through hole (161) is positioned opposite to the first through hole (151); One end of the valve core (11) extends into the valve body (15) and the two are clearance-fitted, and the other end is located outside the tank body (13); the valve core (11) is provided with a first concave cavity (111) and a third through hole (112) distributed in sequence along its axial direction; Wherein, when the quantitative atomization device (100) is in an initial state, the inner wall of the valve body (15) closes the first concave cavity (111); When the metered-quantity atomization device (100) is in a liquid-intake state, the first through hole (151), the first concave cavity (111), and the second through hole (161) are sequentially connected to form a liquid inlet channel, and the liquid in the bag body (14) flows into the metering cavity (16) through the liquid inlet channel under the pressure of the compressed gas; When the quantitative atomization device (100) is in an atomizing state, the second through hole (161) and the third through hole (112) are connected to form a liquid outlet channel, and the liquid in the metering chamber (16) enters the valve core (11) through the liquid outlet channel and is then atomized and sprayed out.

8. The quantitative atomization device according to claim 7, characterized in that: The metering chamber (16) comprises: A first partition (162) having a fourth through hole (1621); a second partition (163) having 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 separate the metering cavity (16) into a first chamber (164), a second chamber (165), and a third chamber (166); a metering plate (167) movably located in the second chamber (165), with a peripheral side wall of the metering plate (167) abutting against an inner wall of the second chamber (165); a third elastic member (168), one end of which is connected to the cavity wall of the first cavity (164) and the other end of which is connected to the metering plate (167); an air pressure balance channel (169), which is in communication with the first chamber (164) and the outside world; Wherein, when the quantitative atomization device (100) is in an initial state, the third elastic member (168) passes through the fourth through hole (1621) and presses the metering plate (163) against the second partition plate (163).

9. The quantitative atomization device according to claim 8, characterized in that: A filter element (1691) is provided at the connection point between the air pressure balance channel (169) and the atmosphere.

10. The quantitative atomization device according to claim 7, characterized in that: The bag valve assembly (1) further comprises a mounting seat (17) for connecting and sealing the tank body (13) and the bag body (14) and for connecting and sealing the bag body (14) and the valve body (15).

11. The quantitative atomization device according to claim 7, characterized in that: A first position limiting structure (152) is provided in the valve body (15) for limiting the liquid inlet position of the valve core (11).

12. The quantitative atomization device according to claim 10, characterized in that: The mounting seat (17) is provided with a second limiting structure (171) for limiting the atomization position of the valve core (11).

13. The quantitative atomization device according to claim 5, characterized in that: The mounting member (4) is covered on the periphery of the valve core (11), the liquid inlet trigger mechanism (2) and the atomization trigger mechanism (3).

14. The quantitative atomization device according to claim 1, characterized in that: The mounting member (4) is provided with an air inlet (43) and an air outlet (44), the air inlet (43) is communicated with the outside, and the air outlet (44) is communicated with the suction channel.

15. The quantitative atomization device according to any one of claims 1 to 4, characterized in that: The bag valve assembly (1) further comprises an atomizing chip (18), which is arranged at the outlet end of the valve core (11).

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