Spraying device

Abstract

The present application relates to a kind of injection devices, injection device includes: actuating mechanism, to form linear driving force;Pump body assembly, including piston rod and pump body, piston rod one end is connected with the driving part of actuating mechanism, the other end is slidably connected in the cavity of pump body;Nozzle assembly, it is connected to pump body and includes spout;Button piece, it can be moved under the pressing of external force and trigger actuating mechanism operation;Spout seal assembly, it includes spout seal, spout seal is connected to button piece;When injection device is in initial state, spout seal seals spout;Wherein, when button piece is moved under the pressing of external force, actuating mechanism drives piston rod to occur quantitative movement and spout seal occurs synchronous movement to open spout, nozzle assembly realizes injection.The injection device of the present application is simple in overall structure, injection metering is accurate, can be accurately delivered and has good sealing performance.

Description

Technical Field

[0001] This invention relates to the field of spraying device technology, and in particular to a spraying device. Background Technology

[0002] Spraying devices can apply fluid materials to the surface of a target object in small quantities, and are therefore increasingly used in daily life and industry.

[0003] When a spray device is used for drug delivery, the dosage of the drug reaching the affected area is strictly controlled. Insufficient dosage will not achieve the desired therapeutic effect, while excessive dosage may cause significant side effects. Therefore, precise dosage control and accurate delivery of the drug to the affected area are crucial. Existing compact spray devices are structured like perfume bottles, squeezing liquid out of the cavity by pressing. The dispensing nozzle is located on a button, and the nozzle moves with the button, affecting the accurate delivery of the drug. Furthermore, no liquid is sprayed during the initial stroke of the press, resulting in inaccurate dosage.

[0004] Furthermore, if the nozzle is exposed to the external environment for an extended period during the use of the spraying device, bacteria can easily grow, affecting the safety of drug use. Existing spraying devices use an outer cover at the nozzle to prevent dust, but the cover's sealing is poor, and users often forget to put it on, making operation inconvenient. Summary of the Invention

[0005] In view of the above-mentioned defects in the prior art, the purpose of the present invention is to provide a spraying device with a simple overall structure, accurate spray metering, precise delivery, and good sealing performance.

[0006] Therefore, the present invention provides the following technical solution.

[0007] This invention provides a spraying device, the spraying device comprising:

[0008] An actuation mechanism, used to generate linear driving force;

[0009] A pump body assembly, comprising a piston rod and a pump body, wherein one end of the piston rod is connected to the drive part of the actuation mechanism, and the other end is slidably connected to the cavity of the pump body;

[0010] A nozzle assembly, which is connected to the pump body and includes a nozzle;

[0011] A button component that can move under external pressure and trigger the operation of the actuation mechanism;

[0012] A nozzle sealing assembly includes a nozzle seal connected to the button; when the spraying device is in the initial state, the nozzle seal seals the nozzle.

[0013] When the button moves under external pressure, the actuation mechanism drives the piston rod to move in a fixed amount and the nozzle seal moves synchronously to open the nozzle, and the nozzle assembly realizes spraying.

[0014] Preferably, it further includes a housing, the housing having an outlet, the outlet and the nozzle being positioned opposite each other; the button is at least partially slidably connected within the housing.

[0015] Preferably, a first one-way valve is provided at the assembly point of the nozzle assembly and the pump body.

[0016] Preferably, it also includes a receiving bottle connected to the pump body, with a second one-way valve provided at the assembly point of the two.

[0017] Preferably, it also includes a mounting bracket, which is connected to the container bottle and the pump body respectively.

[0018] Preferably, the connection method between the container bottle and the mounting bracket includes snap-fit, screw-fit, or magnetic adsorption.

[0019] Preferably, the actuation mechanism, the pump assembly, the mounting bracket, and the container are arranged in sequence from top to bottom.

[0020] Preferably, the actuation mechanism includes:

[0021] A connecting member, which is connected to the piston rod;

[0022] A first elastic element is connected to the connecting element;

[0023] An actuator, wherein the first end of the first elastic member abuts against the actuator;

[0024] The limiting member includes a first limiting position and a second limiting position; when the actuation mechanism is in the initial state, the connecting member is locked at the first limiting position;

[0025] When the button moves under external pressure, the actuator moves under the drive of the button to compress the first elastic member and cause the connector to disengage from the first limiting position. The connector disengaged from the first limiting position can move to the second limiting position in a direction away from the actuator under the action of the first elastic member.

[0026] Preferably, the actuation mechanism further includes a second elastic element, one end of which is used to abut against the actuation element, and the other end is in a resisting state;

[0027] When the connector reaches the second limiting position, the second elastic element is compressed by the actuator and rebounds, so that the actuator, the connector and the first elastic element are reset, the button is reset together with the actuator and the nozzle seal is resealed.

[0028] Preferably, the limiting member is connected to the pump body.

[0029] Preferably, the nozzle sealing assembly further includes an assembly connected to the button; the assembly has a fourth mounting portion, and the nozzle seal is fixed to the fourth mounting portion.

[0030] Preferably, the surface of the assembly facing away from the nozzle seal is provided with a fourth protrusion; the spraying device includes a housing, and the inner wall of the housing is provided with a first pressing part;

[0031] When the spraying device is in the initial state, the fourth protrusion abuts against the first pressing part, so that the nozzle seal is pressed against the nozzle; when the spraying device is in the triggered state, the movement direction of the assembly is perpendicular to the axial direction of the nozzle, and the four protrusions disengage from the first pressing part and move away from the nozzle along the axial direction.

[0032] Preferably, the outer casing is provided with a groove that connects to the first pressing part;

[0033] When the spray is triggered, the fourth protrusion disengages from the first pressing part and enters the groove.

[0034] Preferably, the spraying device further includes a mounting bracket, the mounting bracket having a second pressing part, the second pressing part pressing against the assembly; when the fourth protrusion disengages from the first pressing part, the second pressing part pushes the assembly away from the nozzle.

[0035] Preferably, the spraying device includes a counting mechanism for recording the number of times the spraying device is used.

[0036] Preferably, the counting mechanism includes:

[0037] A counting component, used for counting;

[0038] A gear, which, when rotated, triggers the counting component to count;

[0039] The first engagement block and the second engagement block are both connected to the button component; the first engagement block and the second engagement block are distributed sequentially along the direction of the central axis of the gear, and the first engagement block and the second engagement block are offset along the circumferential direction of the gear;

[0040] When the injection device is in its initial state, the gear and the first meshing block are engaged, and the second meshing block is positioned opposite to one tooth of the gear.

[0041] When the button is moved under the action of an external force to trigger the spraying device to spray, the gear and the second meshing block engage; when the button is reset to trigger the spraying device to aspirate liquid, the gear and the first meshing block engage, so that the gear rotates in one direction to trigger the counting component.

[0042] Preferably, the counting mechanism includes:

[0043] A counting disc, with a gear section on one side;

[0044] A ratchet assembly includes a first ratchet portion and an eccentric wheel arranged coaxially, the eccentric wheel being used to mesh with the gear portion;

[0045] A first pawl is used to connect to the button, and the first pawl engages with the first ratchet portion;

[0046] When the button moves under external force to trigger the spraying device to spray, the first pawl moves synchronously and drives the ratchet to rotate, and the eccentric wheel drives the counting disk to rotate, thereby realizing counting.

[0047] The present invention has the following technical effects:

[0048] This invention provides a spraying device that controls the stroke of a piston rod via an actuation mechanism to precisely control the spray dosage. By controlling the liquid level in the chamber, the liquid level after absorption is ensured to be above the nozzle assembly, preventing any liquid from being sprayed during the initial stroke of the piston rod. Furthermore, since the nozzle assembly is mounted on the pump body, it remains stationary during the movement of the actuation mechanism and piston rod, ensuring accurate drug delivery by aligning the nozzle assembly with the destination. Additionally, in the initial state, the position of the button ensures the nozzle seal is closed, preventing bacterial growth due to contact with the external environment; the seal is automatic and effective. When the button is activated to trigger spraying, the nozzle seal moves synchronously with the button, moving away from the nozzle and opening it to facilitate spraying; sealing and unsealing are convenient. The overall structure of the spraying device is simple, providing accurate metering, precise delivery, and excellent sealing performance. Attached Figure Description

[0049] Figure 1 This is an exploded view of the spraying device in the first embodiment of the present invention. Figure 1 ;

[0050] Figure 2 This is an exploded view of the spraying device in the first embodiment of the present invention. Figure 2 ;

[0051] Figure 3 This is a cross-sectional view of the assembly structure of the actuation mechanism, pump body assembly, and nozzle assembly in the first embodiment of the present invention.

[0052] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0053] Figure 5 This is a partial enlarged cross-sectional view of the assembly structure of the pump body assembly and the nozzle assembly during injection, according to the first embodiment of the present invention.

[0054] Figure 6 This is a cross-sectional view of the assembly structure of the actuation mechanism, pump body assembly, and nozzle assembly in the second embodiment of the present invention.

[0055] Figure 7 for Figure 6 Enlarged view at point B in the middle;

[0056] Figure 8 This is a partial enlarged cross-sectional view of the assembly structure of the pump body assembly and the nozzle assembly during injection, according to the second embodiment of the present invention.

[0057] Figure 9 This is a cross-sectional view of the assembly structure of the pump body assembly and the nozzle assembly in the third embodiment of the present invention;

[0058] Figure 10 This is an exploded view of the assembly structure of the actuation mechanism and piston rod of the present invention. Figure 1 ;

[0059] Figure 11 This is an exploded view of the assembly structure of the actuation mechanism and piston rod of the present invention. Figure 2

[0060] Figure 12 This is a three-dimensional structural diagram of the actuation mechanism of the present invention in its initial state.

[0061] Figure 13 This is a schematic diagram showing the assembly structure relationship of the actuator, the first elastic member, the connecting member, and the piston rod during the assembly process of the present invention. Figure 1 ;

[0062] Figure 14 This is a schematic diagram showing the assembly structure relationship of the actuator, the first elastic member, the connecting member, and the piston rod during the assembly process of the present invention. Figure 2 ;

[0063] Figure 15This is a schematic diagram of the assembly structure of the actuator, the first elastic element, the connecting element, and the piston rod of the present invention after assembly.

[0064] Figure 16 This is a partial cross-sectional view of the assembly structure of the actuation mechanism and the piston rod in the initial state of the present invention.

[0065] Figure 17 This is a partial cross-sectional view of the assembly structure of the actuation mechanism and the piston rod when the actuation mechanism of the present invention is in the actuated state;

[0066] Figure 18 This is a partial cross-sectional view of the assembly structure of the actuation mechanism and the piston rod when the actuation mechanism of the present invention is in the state of single-stroke actuation completion.

[0067] Figure 19 This is an exploded view of the assembly structure of the button, actuation mechanism and piston rod of the present invention.

[0068] Figure 20 This is a partial structural cross-sectional view of the injection device of the present invention;

[0069] Figure 21 This is a partial structural cross-sectional view of the spraying device in the first embodiment of the present invention;

[0070] Figure 22 for Figure 21 Enlarged view at point C;

[0071] Figure 23 This is an exploded view of a partial structure of the injection device in the first embodiment of the present invention;

[0072] Figure 24 This is an exploded view of the assembly structure of the button component, the nozzle sealing assembly, and the first housing according to the first embodiment of the present invention;

[0073] Figure 25 This is an exploded view of the assembly structure of the counting mechanism and the button component in the first embodiment of the present invention;

[0074] Figure 26 for Figure 25 Enlarged view at point D;

[0075] Figure 27 This is an exploded view of the assembly structure of the button, the counting mechanism, and the first housing in the first embodiment of the present invention;

[0076] Figure 28 This is a schematic diagram of the assembly structure of the button, the counting mechanism, and the first housing in the first embodiment of the present invention;

[0077] Figure 29 This is a cross-sectional view of the spraying device in the first embodiment of the present invention;

[0078] Figure 30 This is a partial three-dimensional structural diagram of the spraying device in the fourth embodiment of the present invention;

[0079] Figure 31 This is an exploded view of the counting mechanism in the fourth embodiment of the present invention;

[0080] Figure 32 This is a three-dimensional structural diagram of the counting mechanism in the fourth embodiment of the present invention;

[0081] Figure 33 This is a schematic diagram of the exploded structure of the injection device in the fourth embodiment of the present invention;

[0082] Figure 34 This is a three-dimensional structural diagram of the spraying device in the fourth embodiment of the present invention.

[0083] Explanation of reference numerals in the attached figures

[0084] 100. Spraying device;

[0085] 1. Actuation mechanism;

[0086] 11. Connector; 111. First protrusion; 112. Column; 1121. Second mounting hole; 1122. Second protrusion; 113. Pin; 12. First elastic element; 13. Actuator; 131. First hollow cavity; 132. First notch; 1321. First guide surface; 1322. Fourth guide surface; 133. Second notch; 134. First through hole; 135. Second through hole; 136. Rib; 14. Limiting element; 141. First limiting stop; 142. Second limiting stop; 143. Second hollow cavity; 144. Second limiting groove; 1441. Stop; 145. Third limiting groove; 1451. Second guide surface; 146. Third guide surface; 147. Slide groove; 148. Fifth protrusion; 15. Second elastic element;

[0087] 2. Pump body assembly;

[0088] 21. Piston rod; 22. Pump body; 221. First pump port; 2211. Fourth inclined surface; 2212. First abutment part; 222. Second pump port; 2221. Second step part; 223. Third pump port; 2231. First step part; 224. Cavity; 23. First check valve; 231. Third inclined surface; 232. Column; 233. Third protrusion part; 24. Second check valve; 241. First inclined surface; 25. Inlet pipe; 251. Pipe port; 2511. Second inclined surface; 261. First seal; 262. Second seal; 27. Piston head; 281. First mounting part; 282. Second mounting part;

[0089] 3. Nozzle assembly; 31. Nozzle; 311. Nozzle port; 312. Recess; 313. Nozzle core; 32. Third mounting component; 33. Third seal; 34. Fourth seal;

[0090] 4. Button component; 41. Curved surface; 42. Third abutting rib; 43. Fourth abutting rib; 44. Boss;

[0091] 5. Nozzle sealing assembly; 51. Assembly parts; 511. Fourth mounting part; 512. Fourth protrusion; 513. Third through hole; 52. Nozzle seal;

[0092] 6. Outer shell; 61. First shell; 611. First pressing part; 612. Groove; 613. Outlet; 6141. Window; 6142. Indicator mark; 6151. First mounting part; 6152. Second mounting part; 6153. Third mounting part; 616. Indicator port; 6171. First snap-fit ​​protrusion; 6172. Third snap-fit ​​protrusion; 6181. First abutting rib; 6182. Fifth abutting rib; 6191. First mounting groove; 6192. Second mounting groove; 62. Second shell; 621. Second snap-fit ​​protrusion; 622. Second abutting rib; 623. Sixth abutting rib; 624. Third mounting groove; 625. Fourth mounting groove; 626. Fourth snap-fit ​​protrusion; 63. Mounting ring;

[0093] 71. Mounting bracket; 711. Second pressing part; 712. Mounting plate; 713. Claw; 714. Screw connection; 72. Container bottle;

[0094] 8. Counting mechanism;

[0095] 81. Counting component; 811. Screw; 8111. Threaded part; 8112. Optical shaft part; 812. Indicator; 8121. Second abutment part; 82. Gear; 821. Gear tooth; 8211. Third guide slope; 83. First meshing block; 831. Second guide slope; 84. Second meshing block; 841. First guide slope;

[0096] 85. Counting disc; 851. Gear section; 852. Indicator section; 853. Rotating shaft; 86. Ratchet component; 861. First ratchet section; 862. Eccentric wheel; 8621. Axle; 8622. Wheel body; 863. Second ratchet section; 87. First pawl component; 88. Second pawl component;

[0097] 9. Cover; 91. Fifth snap-fit ​​protrusion. Detailed Implementation

[0098] To make the technical solution and beneficial effects of the present invention more apparent and understandable, a detailed description is provided below 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 pertains.

[0099] In the description of this invention, unless otherwise expressly defined, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this invention and do not indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. That is, they should not be construed as limiting this invention.

[0100] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating the relative importance of the indicated features or the number of indicated technical features. Therefore, a feature specified as "first" or "second" can explicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two; "several" means at least one; unless otherwise expressly defined.

[0101] In this invention, unless otherwise explicitly defined, the terms "installation," "connection," "linking," "fixing," and "setting," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral molding; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0102] In this invention, unless otherwise explicitly defined, the terms "above," "on top of," "over," "above," "below," "below," "below," or "below" for "first feature above second feature" can refer to the first and second features being in direct contact, or to the first and second features being in indirect contact through an intermediate medium. Furthermore, "above," "over," and "below" for "first feature above second feature" can mean the first feature is directly above or diagonally above the second feature, or simply indicates that the horizontal height of the first feature is higher than the horizontal height of the second feature. Similarly, "below," "below," and "below" for "first feature below second feature" can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0103] In this invention, "upper" and "lower" are both used in the sense of... Figure 1 , Figure 3 , Figure 10 , Figure 20 , Figure 21 , Figure 25 , Figure 29 and Figure 30 The markings in the middle shall prevail, with "front", "back", "left" and "right" according to the symbols. Figure 1 The markings in the text shall prevail.

[0104] The following is based on Figures 1 to 34 The spraying device of the present invention will be described in detail.

[0105] First Implementation Method

[0106] The following is based on Figures 1 to 3 and Figures 8 to 29 The spraying device according to the first embodiment of the present invention will be described.

[0107] In this embodiment, such as Figure 1 , Figure 2 and Figure 29 As shown, the injection device 100 includes an actuation mechanism 1, a pump body assembly 2, a nozzle assembly 3, a button 4, and a nozzle sealing assembly 5. The pump body assembly 2 includes a piston rod 21 and a pump body 22. One end of the piston rod 21 is connected to the drive part of the actuation mechanism 1, and the other end is slidably connected to the cavity 224 of the pump body 22. The nozzle assembly 3 is connected to the pump body 22 and includes a nozzle 311. The button 4 can move under external force and trigger the operation of the actuation mechanism 1. When the actuation mechanism 1 is running, it can drive the piston rod 21 to move linearly within the cavity 224, and the stroke of the piston rod 21 is controllable, thereby changing the pressure within the cavity 224 to achieve injection from the nozzle 311. The nozzle sealing assembly 5 includes a nozzle seal 52, which is connected to the button 4. When the spraying device 100 is in the initial state, the nozzle seal 52 seals the nozzle 311. When the button 4 is pressed by an external force, the nozzle seal 52 moves synchronously to open the nozzle 311 so that spraying can be performed.

[0108] By adopting the above technical solution, the stroke of the piston rod 21 is controlled by the actuation mechanism 1 to precisely control the spray dosage. By controlling the liquid level in the cavity 224, the liquid level after absorption is ensured to be above the nozzle assembly 3, preventing the phenomenon of no liquid being sprayed during the initial stroke of the piston rod 21. In addition, since the nozzle assembly 3 is installed on the pump body 22, the nozzle assembly 3 remains stationary during the movement of the actuation mechanism 1 and the piston rod 21. By aligning the nozzle assembly 3 with the destination, accurate delivery of the drug can be guaranteed. Furthermore, when the spray device 100 is in the initial state, the position of the button 4 limits the nozzle seal 52 to seal the nozzle 311, preventing the nozzle 311 from contacting the external environment and causing bacterial growth. The automatic sealing is effective and provides good sealing. When the button 4 is moved under external force to trigger the spray, the nozzle seal 52 moves synchronously with the button 4 to move the nozzle seal 52 away from the nozzle 311, allowing the nozzle 311 to open and cooperate with the spray. The sealing and unsealing operations are convenient. The spray device 100 has a simple overall structure, accurate spray metering, precise delivery, and good sealing performance.

[0109] In one embodiment, the button 4 is a cover structure, which covers the upper part of the pump body assembly 2. Pressing the button 4 downwards triggers the spray, conforming to the user's usage habits. At this time, the seal 52 moves downwards away from the nozzle 311. Of course, the position of the button 4 is not limited to this. It can also be set on any side of the pump body assembly 2, such as the lower part of the pump body assembly 2. When using it, the user can place the bottom of the button 4 on the surface of an object (such as a tabletop) and press down on the top surface of the spray device 100 to trigger the spray.

[0110] In one implementation, such as Figure 1 and Figure 2 As shown, the spraying device 100 also includes a housing 6, which improves the neatness and aesthetics of the spraying device 100's appearance. The housing 6 has an outlet 613, which is positioned opposite to the nozzle 311. When the nozzle seal 52 opens the nozzle 311, the nozzle 311 and the outlet 613 communicate to achieve spraying. A button 4 is at least partially slidably connected within the housing 6. The inner wall of the housing 6 restricts the movement direction of the button 4. Furthermore, the portion of the button 4 exposed outside the housing 6 is for the user to press.

[0111] Furthermore, to facilitate the assembly of internal components, such as Figure 1 and Figure 2 As shown, the outer casing 6 includes a first casing 61 and a second casing 62. The connection method of the first casing 61 and the second casing 62 includes, but is not limited to, snap-fit ​​or ultrasonic welding.

[0112] Furthermore, in order to improve the aesthetics of the outer shell 6, such as Figure 1 and Figure 2 As shown, the first housing 61 and the second housing 62 constitute the front housing and the rear housing, respectively, and the outlet 613 is provided on the first housing 61.

[0113] Furthermore, such as Figure 1 and Figure 2 As shown, the inner wall of the first housing 61 is provided with a first abutting rib 6181, and the inner wall of the second housing 62 is provided with a second abutting rib 622. The first abutting rib 6181 and the second abutting rib 622 abut against the front surface and the rear surface of the button 4, respectively, so as to restrict the movement of the button 4 in the front and back directions and reduce the contact area between the front and back surfaces of the button 4 and the housing 6, so as to facilitate the up and down movement of the button 4.

[0114] Furthermore, such as Figure 1 and Figure 2 As shown, the left and right surfaces of the button 4 are respectively provided with a third abutting rib 42 and a fourth abutting rib 43. The third abutting rib 42 and the fourth abutting rib 43 abut against the inner wall of the outer shell 6, so as to restrict the movement of the button 4 in the left and right directions and reduce the contact area between the front and rear surfaces of the button 4 and the outer shell 6, so as to facilitate the up and down movement of the button 4.

[0115] Furthermore, such as Figure 1 and Figure 2 As shown, the inner wall of the first housing 61 is provided with a fifth abutting rib 6182, the inner wall of the second housing 62 is provided with a sixth abutting rib 623, and the button 4 is provided with a boss 44. The fifth abutting rib 6182 and the sixth abutting rib 623 abut against the upper surface of the boss 44 to restrict the upward movement of the button 4 and to limit the initial position of the button 4 in the vertical direction.

[0116] In one implementation, such as Figures 3 to 5 As shown, the pump body 22 includes a first pump port 221, a second pump port 222, and a third pump port 223. The first pump port 221 is located between the second pump port 222 and the third pump port 223. The second pump port 222 is located below the third pump port 223. The piston rod 21 is slidably connected to the cavity 224 of the pump body 22 through the third pump port 223. The first pump port 221 is used to connect the nozzle assembly 3. A first one-way valve 23 is provided at the assembly point of the nozzle assembly 3 and the first pump port 221 of the pump body 22.

[0117] In one implementation, such as Figure 1 , Figure 2 and Figure 20 As shown, the spraying device 100 also includes a receiving bottle 72, which is connected to the second pump port 222 of the pump body 22 and the assembly of the two is provided with a second one-way valve 24, so that the pump body assembly 2 can draw liquid, enabling the spraying device 100 to spray multiple times.

[0118] like Figures 3 to 5 and Figure 29 As shown, when the piston rod 21 moves away from the container bottle 72, a vacuum negative pressure is formed in the cavity 224. The first one-way valve 23 closes the first pump port 221, and the second one-way valve 24 opens the second pump port 222. The liquid in the container bottle 72 flows into the cavity 224 until the piston rod 21 completes its forward stroke, and the pump assembly 2 completes one liquid suction cycle. Figure 3 As shown, when the piston rod 21 moves toward the container bottle 72, the liquid in the cavity 224 is squeezed, the first one-way valve 23 opens the first pump port 221, and the second one-way valve 24 closes the second pump port 222 until the piston rod 21 completes its negative stroke, and the pump assembly 2 completes one injection.

[0119] Furthermore, such as Figures 3 to 5 As shown, the pump assembly 2 includes an inlet pipe 25, which is inserted into the receiving bottle 72 to facilitate the pump assembly 2 to draw liquid.

[0120] Furthermore, such as Figure 4 and Figure 5 As shown, the second check valve 24 is disposed within the port 251 of the inlet pipe 25. The inlet pipe 25 has a simple structure. By assembling the second check valve 24 into the inlet pipe 25, instead of assembling the second check valve 24 and the pump body 22 separately, the structure of the pump body 22 can be simplified. Furthermore, during assembly, the second check valve 24 and the inlet pipe 25 are assembled first, and then the inlet pipe 25 and the pump body 22 are assembled, which reduces the assembly difficulty. Of course, the second check valve 24 can also be directly assembled into the cavity 224 of the pump body 22.

[0121] Furthermore, such as Figure 4 and Figure 5 As shown, the peripheral wall of the second check valve 24 is clearance-fitted with the wall of the pipe port 251. The second check valve 24 is provided with a first inclined surface 241, and the pipe port 251 is provided with a second inclined surface 2511. Figure 5 As shown, when the piston rod 21 moves toward the receiving bottle 72, the liquid (not shown in the figure) in the cavity 224 is compressed. Under the compression of the liquid, the first inclined surface 241 abuts against the second inclined surface 2511, and the second one-way valve 24 closes the port 251. Figure 4 As shown, when the piston rod 21 moves away from the container bottle 72, a vacuum negative pressure is formed in the cavity 224. The first inclined surface 241 disengages from the second inclined surface 2511, allowing liquid to flow into the cavity 224 from the gap between the outer wall of the second one-way valve 24 and the wall of the port 251, thus achieving liquid suction. In this embodiment, the second one-way valve 24 has a simple structure and is easy to open and close.

[0122] In one implementation, such as Figures 3 to 5The first check valve 23 shown is a filter element. The inner wall of the first check valve 23 and the first pump port 221 are press-fitted. The filter element's pore size is designed to allow liquid to pass through under hydraulic pressure while preventing air from passing through. During the reciprocating motion of the piston rod 21, the first check valve 23 remains stationary and prevents air from passing through, thus isolating it from external air and preventing contamination of the liquid in the cavity 224 and the container bottle 72. When the pump assembly 2 draws in liquid, a vacuum is created in the cavity 224, causing the first check valve 23 to close the first pump port 221. When the pump assembly 2 sprays liquid, the liquid compresses the cavity 224, and the first check valve 23 is subjected to hydraulic pressure, causing the liquid to be ejected after passing through the filter holes of the first check valve 23.

[0123] Furthermore, the pore size of the filter element is 5μm-50μm, preferably 5μm.

[0124] In one implementation, such as Figure 3 As shown, the pump body assembly 2 includes a first seal 261, which is used to seal the assembly gap between the piston rod 21 and the third pump port 223 to prevent outside air from entering the cavity 224.

[0125] Furthermore, such as Figure 3 As shown, the pump body assembly 2 includes a first mounting member 281, which is screwed onto the outer periphery of the third pump port 223. The third pump port 223 has a first stepped portion 2231, and a first groove is formed between the first stepped portion 2231 and the first mounting member 281. A first sealing member 261 is engaged in the first groove, and the first sealing member 261 is easy to assemble. In a specific embodiment, the limiting member 14 of the actuation mechanism 1 is screwed onto the outer periphery of the third pump port 223. In this case, one end of the limiting member 14 constitutes the first mounting member 281.

[0126] In one implementation, such as Figure 3 As shown, the pump body assembly 2 includes a second seal 262, which is used to seal the assembly gap between the liquid inlet pipe 25 and the second pump port 222 to prevent outside air from entering the cavity 224.

[0127] Furthermore, such as Figure 3 As shown, the pump body assembly 2 includes a second mounting member 282, which is screwed onto the second pump port 222. The second pump port 222 has a second stepped portion 2221, and a second groove is formed between the second stepped portion 2221 and the second mounting member 282. A second seal 262 is engaged in the second groove, and the second seal 262 is easy to assemble. In a specific embodiment, the spraying device 100 includes a mounting bracket 71 for mounting the receiving bottle 72. The screwed portion 714 of the mounting bracket 71 is screwed onto the outer periphery of the second pump port 222, where the screwed portion 714 constitutes a first mounting member.

[0128] In one implementation, such as Figure 3 As shown, the nozzle assembly 3 includes a nozzle 31, a third mounting member 32, and a third seal member 33. The nozzle 31 is used to spray liquid in a mist form. The third mounting member 32 is screwed to the outer periphery of the first pump port 221 and is used to install the nozzle 31 inside the first pump port 221. The third seal member 33 is used to seal the assembly gap between the nozzle 31 and the first pump port 221.

[0129] Furthermore, such as Figure 3 As shown, the nozzle 31 has a recessed portion 312 on the side facing the cavity 224, and a nozzle core 313 is provided in the recessed portion 312. The liquid in the cavity 224 passes through the nozzle core 313 and the nozzle 311 in sequence to spray out a mist of medicine.

[0130] In one implementation, such as Figure 1 and Figure 2 The spraying device 100 also includes a mounting bracket 71, which is connected to the container bottle 72 and the pump body 22 respectively, so as to facilitate the assembly of the container bottle 72.

[0131] Furthermore, the connection between the container bottle 72 and the mounting bracket 71 can be achieved by snap-fit, screw-fit, or magnetic adsorption. The container bottle 72 is easy to assemble and disassemble, so as to replace the container bottle 72 or add liquid to the container bottle 72 in a timely manner.

[0132] Furthermore, such as Figure 1 , Figure 23 and Figure 29 The mounting bracket 71 includes a mounting plate 712, a retainer 713, and a screw connection 714. The retainer 713 is connected to the bottom wall of the mounting plate 712 and is used to hold the receiving bottle 72. The screw connection 714 is connected to the top wall of the mounting plate 712 and is used to screw the second pump port 222 of the pump body 22. The mounting plate 712 is provided with a clearance hole (not shown in the figure) to allow the bottle mouth of the receiving bottle 72 and the second pump port 222 to face each other.

[0133] Furthermore, such as Figure 29 As shown, the bottom of the container bottle 72 is located outside the housing 6 of the spraying device 100, so that the container bottle 72 can be loaded and unloaded without opening the housing 6, which is convenient for the user.

[0134] Furthermore, such as Figure 1 , Figure 2 and Figure 29 As shown, to improve the aesthetic appearance of the spraying device 100, the spraying device 100 also includes a cover 9, which is connected to the outer shell 6 and covers the portion of the container bottle 72 that is exposed outside the outer shell 6. In addition, the cover 9 can increase the surface area of ​​the bottom wall of the spraying device 100, which is beneficial for stable placement.

[0135] Furthermore, such as Figure 1 As shown, the left and right outer walls of the first housing 61 are provided with third snap-fit ​​protrusions 6172, the left and right outer walls of the second housing are provided with fourth snap-fit ​​protrusions 626, and the left and right inner walls of the cover 9 are provided with fifth snap-fit ​​protrusions 91. After the first housing 61 and the second housing 62 are assembled, they are snapped together by the third snap-fit ​​protrusions 6172 and the fourth snap-fit ​​protrusions 626 and the fifth snap-fit ​​protrusions 91, making it easy to install and remove.

[0136] In one implementation, such as Figure 1 , Figure 2 and Figure 29 As shown, the actuation mechanism 1, pump body assembly 2, mounting bracket 71 and receiving bottle 72 are arranged from top to bottom, which is conducive to compact layout and reduces space occupation.

[0137] In one implementation, such as Figure 10 and Figure 11 As shown, the actuation mechanism 1 includes a connector 11, a first elastic member 12, an actuator 13, and a limiting member 14. The connector 11 is connected to the piston rod 21, the first elastic member 12 is connected to the connector 11, and the first end of the first elastic member 12 abuts against the actuator 13. The limiting member 14 includes a first limiting position 141 and a second limiting position 142.

[0138] like Figure 12 and Figure 16 As shown, when the connector 11 is locked in the first limiting position 141, the actuation mechanism 1 is in its initial state. When the spraying device 100 sprays, the button 4 moves under external force, and the actuator 13 moves under the drive of the button 4. Since the first end of the first elastic member 12 abuts against the actuator 13, the moving actuator 13 compresses the first elastic member 12, causing the first elastic member 12 to press the connector 11, thereby causing the connector 11 to disengage from the first limiting position 141 to trigger spraying. Since the connector 11 disengages from the limiting position 141, the first elastic member 12, which is in a compressed state, rebounds in a direction away from the actuator 13. Therefore, as Figure 17 As shown, under the action of the first elastic member 12, the connecting member 11 can continue to move in the direction toward the second limiting position 142. At this time, the actuating mechanism 1 is in the actuated state (causing the piston rod 21 to move). Figure 18 As shown, when the connecting member 11 moves to the second limiting position 142 and stops, the actuation mechanism 1 is in the single-stroke actuation completed state. The connecting member 11 and the piston rod 21 are displaced together in a metered manner. As the piston rod 21 moves, the liquid in the cavity of the pump body 22 is squeezed, thereby realizing metered injection.

[0139] The spraying device 100 is equipped with an actuation mechanism 1. A first limiting position 141 limits the initial position of the connecting member 11, and a second limiting position 142 limits the stop position of the connecting member 11. When the connecting member 11 moves to the stop position, the nozzle assembly completes one spray. That is, the limiting member 14 limits the travel of the connecting member 11 during the spraying process, and the movement of the connecting member 11 is driven by the cooperation of the first elastic member 12 and the actuating member 13. Whenever the user triggers the spray, the connecting member 11 can reach the second limiting position 142 under the action of the first elastic member 12. This allows for precise control of the travel of the piston rod 21 within the cavity of the pump body 22, preventing variations in the force applied by the user from affecting the spray dosage, ensuring the stability of the spray dosage, accurate measurement, and improved spraying effect. Furthermore, the first elastic member 12 provides instantaneous driving force to the connecting member 11, enabling the piston rod 21 to move instantaneously, which is beneficial for stable mist formation. In addition, the actuation mechanism 1 has a simple overall structure and is easy to operate.

[0140] In one implementation, such as Figure 10 As shown, the first elastic element 12 is a spring, which has a simple structure.

[0141] In one embodiment, the upper part of the pump body 22 is connected to the actuation mechanism 1, the lower part is connected to the receiving bottle 72, and the lower part of the limiting member 14 is screwed to the pump body 22.

[0142] In one implementation, such as Figure 19 As shown, the actuation mechanism 1 is located inside the button 4 to conceal the actuation mechanism 1 and improve the aesthetics of the appearance. The top wall of the actuation member 13 is opposite to the inner wall of the button 4. When the spraying device 100 is used, the actuation member 13 is moved by pressing the button 4.

[0143] In one implementation, such as Figure 10 , Figure 11 , Figures 16 to 18 As shown, the actuation mechanism 1 also includes a second elastic member 15, one end of which abuts against the actuating member 13, and the other end abuts against the limiting member 14 to be in a stopped state. Figures 16 to 18As shown, when the injection device 100 injects, the actuator 13 moves under external force, compressing the second elastic element 15. When the connecting element 11 reaches the second limiting position 142, the injection device 100 completes one accurate dose injection. Then, the compressed second elastic element 15 rebounds, causing the actuator 13, along with the connecting element 11 and the first elastic element 12, to reset. At this time, the connecting element 11 drives the piston rod 21 to move in the opposite direction, creating a vacuum negative pressure in the cavity 224 of the pump body 22. The pump body 22 draws liquid from the container bottle, completing one liquid aspiration. The actuation mechanism 1, through the reciprocating motion of the actuator 13, can drive the piston rod 21 to perform a quantitative reciprocating motion, ultimately achieving multiple stable dose injections. In addition, at the same time as the actuator 13 resets, the button 4 moves and resets along with the actuator 13, causing the nozzle seal 52 to reseal the nozzle 311, ensuring the sealing at the nozzle 311.

[0144] Of course, the reset structure of the actuation mechanism 1 is not limited to this. It can also be reset by manually resetting the actuator 13 or other structures.

[0145] Furthermore, such as Figure 10 As shown, the second elastic element 15 is a spring, which has a simple structure.

[0146] In one implementation, such as Figure 13 and Figure 15 As shown, the actuator 13 has a first hollow cavity 131, and the connecting member 11 and the first elastic member 12 are located inside the first hollow cavity 131. The first end of the first elastic member 12 abuts against the cavity wall of the first hollow cavity 131. Containing the connecting member 11 and the first elastic member 12 within the actuator 13 helps to reduce the overall size of the actuation mechanism 1, and the actuator 13 prevents the connecting member 11 and the first elastic member 12 from wobbling when moving along the axial direction of the piston rod 21.

[0147] Of course, the structure of the actuator 13 is not limited to this. The actuator 13 can also be constructed as a plate structure or other structures, as long as it can compress the first elastic member 12 and cause the connecting member 11 to disengage from the first limiting position 141 when it moves.

[0148] Furthermore, such as Figure 13 and Figure 16As shown, the actuator 13 has a first notch 132, and the connector 11 includes a first protrusion 111. The first protrusion 111 passes through the first notch 132 and engages with the limiting member 14. When the actuator 1 is in the initial state, the first protrusion 111 is locked in the first limiting member 141, which facilitates the assembly of the connector 11 and the limiting member 14. It should be understood that when the connector 11 and the first elastic member 12 are assembled into the actuator 13, the first elastic member 12 is in a compressed state, so that the first protrusion 111 can be firmly pressed against the corner of the first notch 132.

[0149] Furthermore, such as Figure 11 and Figure 12 As shown, the limiting member 14 has a second hollow cavity 143, and the actuator 13 is partially located within the second hollow cavity 143, which helps to reduce the overall size of the actuation mechanism 1, and the two are slidably engaged to facilitate the movement of the actuator 13 within the second hollow cavity 143. In one specific embodiment, as... Figure 11 As shown, the actuator 13 has two protruding ribs 136 at the two corners of its outer wall, and the limiting member 14 has two sliding grooves 147. The protruding ribs 136 and the sliding grooves 147 are matched one by one so that the actuator 13 is slidably connected to the limiting member 14.

[0150] Of course, the structure of the limiting member 14 is not limited to this. It can also be constructed as a plate structure or other structures, as long as it can cooperate with the connecting member 11 to limit the travel of the connecting member 11.

[0151] Furthermore, such as Figure 13 As shown, the first notch 132 is provided with a first guide surface 1321. When the spraying device 100 sprays, the actuator 13 moves under external force. At this time, as... Figure 16 As shown, due to the restriction of the first limiting position 141 on the connector 11, the connector 11 does not move until the actuator 13 moves to the point where the first guide surface 1321 abuts against the first protrusion 111, as... Figure 17 As shown, the first guide surface 1321 changes the direction of the thrust applied by the actuator 13 to the first protrusion 111, that is, the first protrusion 111 moves along the first guide surface 1321 and eventually disengages from the first limiting position 141.

[0152] In one implementation, such as Figure 10 and Figure 11As shown, the limiting member 14 includes a first limiting groove and a second limiting groove 144 that are connected to each other. The first limiting groove constitutes a first limiting position 141; the second limiting groove 144 extends along the movement direction of the connecting member 11, and the end of the second limiting groove 144 away from the first limiting groove constitutes a second limiting position 142. The first protrusion 111 of the connecting member 11 can be inserted into the first limiting position 141 (first limiting groove) to achieve limiting, and the limiting operation is simple. When the first protrusion 111 disengages from the first limiting position 141, it moves along the second limiting groove 144 to the second limiting position 142 and is stopped by the second limiting position 142. The limiting operation is simple, and the second limiting groove 144 can also restrict the movement direction of the connecting member 11 to prevent the connecting member 11 from shaking during the triggering of the injection process, which would affect the stability of the connection between the connecting member 11 and the piston rod 21.

[0153] Of course, the structure of the first limiting position 141 and the second limiting position 142 is not limited to this, and can also be constructed as a stop protrusion or other structures.

[0154] Furthermore, such as Figure 10 and Figure 11 As shown, the first limiting position 141 is connected to one side of the second limiting groove 144, and the extending direction of the first limiting position 141 is perpendicular to the extending direction of the second limiting groove 144.

[0155] Furthermore, such as Figure 11 As shown, the limiting member 14 includes a third limiting groove 145, and the third limiting groove 145 is provided with a second guide surface 1451, which is used to guide the installation of the connector 11. When assembling the connector 11 and the limiting member 14, the first protrusion 111 of the connector 11 is first inserted into the third limiting groove 145. Under external force, the first protrusion 111 moves along the second guide surface 1451. The second guide surface 1451 applies a force to the first protrusion 111 in a direction away from the first limiting groove 141. With the cooperation of the first elastic member 12, the connector 11 rotates at a certain angle around its own central axis, and the rotation of the connector 11 applies a pre-torque to the first elastic member 12. When the first protrusion 111 moves with the connector 11 to the slot of the first limiting position 141, the first elastic member 12 causes the connector 11 to rotate in the opposite direction under the pre-torque, thereby guiding the first protrusion 111 into the first limiting position 141 to lock the initial position of the connector 11, making installation simple.

[0156] Furthermore, such as Figure 11 As shown, the limiting member 14 includes a third guide surface 146, which is connected to the second guide surface 1451. The third guide surface 146 is located on a surface of the limiting member 14 facing the connector 11. When the connector 11 and the limiting member 14 are assembled, the third guide surface 146 is used to guide the connector 11 to partially extend into the third limiting groove 145 for easy assembly.

[0157] In one specific embodiment, during assembly, the connecting member 11 and the first elastic member 12 are first inserted into the first hollow cavity 131 of the actuator 13, and then the actuator 13 is inserted into the second hollow cavity 143 of the limiting member 14. During the insertion of the actuator 13 into the second hollow cavity 143, the first protrusion 111 first contacts the third guide surface 146, moves along the third guide surface 146 to the second guide surface 1451, and under the guidance of the second guide surface 1451, the first protrusion 111 enters the first limiting position 141, and the actuation mechanism 1 is assembled.

[0158] Furthermore, such as Figure 11 As shown, the third limiting groove 145 is located at the connection between the first limiting groove 141 and the second limiting groove 144, as... Figure 12 As shown, the second limiting groove 144 is provided with a stop part 1441, which is used to prevent the connector 11 from entering the third limiting groove 145 when the connector 11 is reset.

[0159] In one specific implementation, such as Figure 11 and Figure 12 As shown, the third limiting groove 145 is located above the second limiting groove 144, the first limiting groove 141 is located on one side of the second limiting groove 144, and the actuator 13 moves downward to assemble with the limiting member 14. Figure 16 As shown, when the spraying device 100 sprays, the actuator 13 moves downward until the first guide surface 1321 of the actuator 13 contacts the first protrusion 111 that is limited by the first limiting position 141, causing the first protrusion 111 to disengage from the first limiting position 141 and enter the second limiting groove 144, as shown. Figure 17 and Figure 18 As shown, the compressed first elastic element 12 rebounds downward, causing the connecting member 11 to move downward until the first protrusion 111 is limited to the second limiting position 142, completing one metered injection. Then, under the rebound of the second elastic element 15, the actuator 13, together with the connecting member 11 and the first elastic element 12 located inside it, returns to its original position upward, as shown. Figure 12 As shown, when the connecting member 11 moves to the stop part 1441, it is blocked and its upward movement is temporarily slowed down. At this time, under the action of the pre-torque of the first elastic member 12, the first protrusion 111 rotates and enters the first limiting position 141, and returns to the initial position. The pump body assembly completes one quantitative liquid aspiration.

[0160] In one implementation, such as Figures 13 to 15As shown, the actuator 13 includes a second notch 133 and a first through hole 134 and a second through hole 135 that are connected to each other. Both the first through hole 134 and the second through hole 135 communicate with the first hollow cavity 131 of the actuator 13. The second notch 133 is located on one side of the first notch 132 and the two are connected. The first notch 132 is provided with a fourth guide surface 1322. When the connector 11 and the actuator 13 are assembled, as follows... Figure 13 As shown, the column 112 of the connector 11 is aligned with the first through hole 134, and the first protrusion 111 of the connector 11 is aligned with the second through hole 135. At this time, the first elastic member 12 has a pre-torque force, inserting the connector 11 into the first hollow cavity 131. When the first protrusion 111 moves to the second notch 133, because the first protrusion 111 disengages from the actuator 13, the first elastic member 12 with the pre-torque force causes the connector 11 to rotate at a certain angle, such as... Figure 14 As shown, this causes the first protrusion 111 to protrude through the second notch 133. Then, under the pre-torque and rebound force of the first elastic member 12, the first protrusion 111 of the connector 11 moves along the fourth guide surface 1322 to a corner of the first notch 132. At this time, the first elastic member 12 still has pre-torque, as shown. Figure 15 As shown, this is so that the first protrusion 111 can stably abut against the corner.

[0161] Furthermore, such as Figure 15 and Figure 16 As shown, the fourth guide surface 1322 is inclined toward the first limiting position 141. During the resetting process of the actuator 13, the fourth guide surface 1322 can also apply a force toward the first limiting position 141 to the first protrusion 111 to ensure that the first protrusion 111 can be reset to the initial position locked in the first limiting position 141.

[0162] In one implementation, such as Figure 10 and Figure 11 As shown, the connector 11 includes a column 112 and a pin 113. The column 112 is connected to the first elastic member 12. The column 112 is provided with a second mounting hole 1121. The pin 113 is inserted into the column 112 through the second mounting hole 1121. The part of the pin 113 located outside the column 112 forms a first protrusion 111. The connector 11 has a simple structure and is easy to process.

[0163] Furthermore, such as Figure 13 As shown, one end of the column 112 is provided with a second protrusion 1122, and the first elastic member 12 is sleeved on the outer periphery of the second protrusion 1122. The two are simple and quick to assemble.

[0164] Furthermore, the other end of the column 112 is provided with a first mounting hole (not shown in the figure), which is used to install the piston rod 21, and the two are simple and quick to assemble.

[0165] In one implementation, such as Figure 1 and Figure 2 As shown, the first housing 61 is provided with a first mounting groove 6191 and a second mounting groove 6192, and the second housing 62 is provided with a third mounting groove 624 and a fourth mounting groove 625. After the actuation mechanism 1, the pump body assembly 2, and the nozzle assembly 3 are assembled, the container bottle 72 is assembled to the pump body assembly 2 through the mounting bracket 71. The two sides of the actuation mechanism 1 are respectively assembled to the first mounting groove 6191 and the third mounting groove 624. The side wall of the mounting plate 712 of the mounting bracket 71 is snapped in place through the second mounting groove 6192 and the fourth mounting groove 625. The pump body assembly 2 is partially snapped in the third mounting groove 624.

[0166] Furthermore, the limiting member 14 of the actuation mechanism 1 is provided with a fifth protrusion 148 on both sides, and the limiting member 14 is engaged with the first mounting groove 6191 and the third mounting groove 624 through the fifth protrusion 148.

[0167] In one implementation, such as Figures 22 to 24 As shown, the nozzle sealing assembly 5 also includes a mounting part 51, which is connected to the button 4. The mounting part 51 has a fourth mounting portion 511, and the nozzle seal 52 is fixed to the fourth mounting portion 511. The nozzle seal 52 is connected to the button 4 through the mounting part 51. In this way, the nozzle sealing assembly 5 can install the nozzle seal 52 by setting the mounting part 51, and the nozzle seal 52 can move synchronously with the button 4. Therefore, during the spraying process, the nozzle sealing assembly 5 can automatically open the nozzle 311, and after spraying, it can automatically seal the nozzle 311 without the user having to manually seal it. The operation is simple and can continuously and effectively maintain the sealing performance.

[0168] In one implementation, such as Figure 22 , Figure 24 and Figure 5 As shown, the fourth mounting part 511 has a groove structure, and the nozzle seal 52 is embedded in the fourth mounting part 511, making the assembly of the nozzle seal 52 simple and quick. Of course, the structure of the fourth mounting part 511 is not limited to this; it can also be other mounting structures that can assemble the nozzle seal 52, such as mounting holes or snap-fit ​​structures.

[0169] In one implementation, such as Figure 22 and Figure 23As shown, the surface of the assembly 51 facing away from the nozzle seal 52 is provided with a fourth protrusion 512; the spraying device 100 includes a housing 6, and the inner wall of the housing 6 is provided with a first pressing part 611. When the spraying device 100 is in the initial state, the fourth protrusion 512 abuts against the first pressing part 611, and the first pressing part 611 applies a force to the fourth protrusion 512 in the direction toward the nozzle assembly 3, so that the nozzle seal 52 is pressed against the nozzle 311, thereby improving the sealing performance of the nozzle seal 52 to the nozzle 311. When the spray device 100 is in the triggered state, the movement direction of the accessory 51 is perpendicular to the axial direction of the nozzle 311. During the movement of the accessory 51 to bring the seal 52 away from the nozzle 311, the fourth protrusion 512 disengages from the first pressing part 611. As the force exerted by the first pressing part 611 on the fourth protrusion 512 is removed, the fourth protrusion 512 moves in the axial direction away from the nozzle 311. Thus, the fourth protrusion 512 drives the seal 52 axially away from the nozzle 311. That is, the seal 52 moves in two directions (axially away from the nozzle 311 and in the direction perpendicular to the axial direction of the nozzle 311) to facilitate the disengagement of the seal 52 from the nozzle 311. Further, the first pressing part 611 is provided on the first housing 61.

[0170] Furthermore, the assembly 51 is an elastic component with a certain elastic deformation capability. Thus, under the pressure of the first pressing part 611, the fourth protrusion 512 can cause the assembly 51 to press against the nozzle 311, thereby causing the nozzle seal 52 to be pressed against the nozzle 311.

[0171] It should be understood that assembly 51 can be a plastic structure, the properties of which give it a certain degree of elastic deformation capability. Of course, assembly 51 can also be constructed as a thinner plate-like structure to have a certain degree of elastic deformation capability.

[0172] Furthermore, such as Figure 23 As shown, there is one fourth protrusion 512. The fourth mounting part 511 and the fourth protrusion 512 are distributed along the center line of the vertical direction of the mounting part 51, so that the pressure of the first pressing part 611 on the fourth protrusion 512 can be evenly transmitted to the fourth mounting part 511.

[0173] Of course, the number and location of the fourth protrusion 512 are not limited to this. Preferably, the fourth protrusion 512 is positioned such that the pressure from the first pressing part 611 is evenly transmitted to the fourth mounting part 511.

[0174] In one implementation, such as Figure 22 and Figure 24As shown, a groove 612 is provided on the surface of the housing 6 facing the fitting 51, and the groove 612 is connected to the first pressing part 611. In one specific embodiment, the button 4 is located on the upper part of the nozzle assembly 3. When an external force presses the button 4, the button 4 moves downward to trigger the spray. The fitting 51 moves downward along with the button 4, thereby causing the fourth protrusion 512 to disengage from the first pressing part 611. The fitting 51 continues to move downward, causing the fourth protrusion 512 to enter the groove 612. The groove 612 is used to accommodate the fourth protrusion 512, which reduces the force exerted by the fitting 51 on the nozzle seal 52 against the nozzle 311, so that the fitting 51 can continue to move downward, eventually causing the nozzle seal 52 to completely disengage from the nozzle 311. Further, the groove 612 is provided on the first housing 61.

[0175] Furthermore, such as Figure 22 and Figure 24 As shown, the surface of the first pressing part 611 that presses against the fourth protrusion 512 is inclined, extending obliquely towards the groove 612. While pressing against the fourth protrusion 512, the first pressing part 611 also acts as a guide when the spray is triggered, facilitating the fourth protrusion 512 to disengage from the first pressing part 611 and enter the groove 612. In this way, the user can easily trigger the spray without applying excessive force to drive the button 4 and the nozzle sealing assembly 5 to move.

[0176] Of course, the structure of the fitting 51 and the housing 6 is not limited to this. The fitting 51 may not have the fourth protrusion 512, and the housing 6 may not have the first pressing part 611 and the groove 612. By limiting the assembly gap between the fitting 51 and the nozzle assembly 3, the nozzle seal 52 can seal the nozzle 311. Furthermore, when the spray is triggered and the fitting 51 moves synchronously with the button 4, the nozzle seal 52 is squeezed between the fitting 51 and the nozzle assembly 3. Under the flexible deformation of the nozzle seal 52, the fitting 51 can move synchronously with the button 4. In this solution, the fitting 51 can be an elastic component or a non-elastic component.

[0177] In one embodiment, the mounting bracket 71 is provided with a second pressing part 711, which abuts against the mounting part 51. When the atomizing device 100 triggers the spray, the mounting part 51 moves together with the button 4 until the fourth protrusion 512 disengages from the first pressing part 611. At this time, the groove 612 can allow the fourth protrusion 512 to move away from the nozzle 311, and the second pressing part 711 applies a force to the mounting part 51 in the direction away from the nozzle 311 to push the mounting part 51 away from the nozzle 311 so that the mounting part 51 can continue to move.

[0178] Furthermore, such as Figure 22 and Figure 23 As shown, the second pressing part 711 has a protruding structure and a simple structure. The second pressing part 711 extends obliquely in the direction toward the assembly 51, thereby being able to apply a force to the assembly 51 in the direction away from the nozzle 311.

[0179] Furthermore, the second pressing part 711 is an elastic component, and the second pressing part 711 has a certain elastic deformation capability. In this way, the second pressing part 711 can deform in the axial direction of the nozzle 311 to match the change in the axial position of the assembly 51 in the nozzle 311 during the reciprocating motion.

[0180] Of course, the second pressing part 711 can also be a non-elastic component. In this case, the fitting 51 is an elastic component. When the spraying device 100 is in the initial state, the fitting 51 is squeezed by the nozzle assembly 3 and the housing 6 so that the nozzle seal 52 can be pressed tightly against the nozzle 311. When the spraying device 100 triggers the spray, under the pressure of the second pressing part 711, the part of the fitting 51 opposite to the groove 612 can extend, thereby reducing the friction between the fitting 51 and the housing 6, which is beneficial for the fitting 51 to continue moving.

[0181] In one specific implementation, such as Figures 21 to 23 As shown, the button 4 is located on the upper part of the nozzle assembly 3, and the mounting bracket 71 is located below the nozzle assembly 3. The fourth mounting part 511 is provided above the fourth protrusion 512, the fourth protrusion 512 is provided near the bottom end of the mounting part 51, and the second pressing part 711 abuts against the lower part of the surface of the fourth mounting part 511 facing the nozzle 311.

[0182] In one implementation, such as Figure 24 and Figure 25 As shown, the button component 4 and the assembly component 51 are integrally formed, eliminating the need for assembly between the two.

[0183] In one implementation, such as Figures 22 to 24 As shown, the assembly 51 is provided with a third through hole 513. When the spray is triggered, the assembly 51 moves to the nozzle seal 52 to open the nozzle 311. At this time, the third through hole 513 and the outlet 613 are aligned, thereby opening the nozzle 311, and the nozzle assembly 3 sprays from the outlet 613.

[0184] In one embodiment, the spraying device 100 includes a counting mechanism 8 for recording the number of times the spraying device 100 is used.

[0185] In one implementation, such as Figures 25 to 28As shown, the counting mechanism 8 includes a counting component 81, a gear 82, a first meshing block 83, and a second meshing block 84. The counting component 81 is used for counting, and the gear 82 can trigger the counting component 81 to count when it rotates. Both the first meshing block 83 and the second meshing block 84 are connected to the button 4 of the spraying device 100, so that the first meshing block 83 and the second meshing block 84 can move along with the button 4. The first meshing block 83 and the second meshing block 84 are distributed sequentially along the central axis of the gear 82, and are offset circumferentially from the gear 82. When the spraying device 100 is in its initial state, the gear 82 and the first meshing block 83 are engaged, and the second meshing block 84 is positioned opposite one tooth of the gear 82.

[0186] When the button 4 moves under external force to trigger the spraying device 100 to spray, the first engaging block 83 and the second engaging block 84 move downward together with the button 4. The first engaging block 83 disengages from the gear 82, and the second engaging block 84 moves downward until it contacts one tooth of the gear 82. The gear 82 rotates under the pressure of the second engaging block 84 until the gear 82 and the second engaging block 84 mesh. When the button 4 moves upward to reset and trigger the spraying device 100 to aspirate liquid, the second engaging block 84 disengages from the gear 82, and the first engaging block 83 moves until it contacts one tooth of the gear 82. The gear 82 rotates under the pressure of the first engaging block 83 until the gear 82 and the first engaging block 83 mesh. When the button 4 moves to trigger one spray and one aspiration, the first engaging block 83 and the second engaging block 84 engage so that the gear 82 rotates in one direction to trigger the counting component 81.

[0187] By setting the first meshing block 83 and the second meshing block 84 and defining their positional relationship, during the movement of the button 4, the first meshing block 83 and the second meshing block 84 alternately mesh with the gear 82, guiding the gear 82 to rotate in one direction. The rotation of the gear 82 then triggers the counting component 81 to start counting. The gear 82, the first meshing block 83, and the second meshing block 84 work together to form the driving component of the counting mechanism 8. The structure is simple and compact, which helps to reduce the overall size of the counting mechanism 8.

[0188] In one implementation, such as Figures 25 to 28As shown, the counting component 81 includes a screw 811 and an indicator 812. One end of the screw 811 is coaxially connected to the gear 82, and the indicator 812 is screwed onto the screw 811. The button 4 moves along the axial direction of the screw 811. When the gear 82 rotates, it drives the screw 811 to rotate synchronously. The indicator 812 is restricted so that it cannot rotate with the screw 811. Therefore, during the rotation of the screw 811, the indicator 812 moves unidirectionally along the axial direction of the screw 811, and the position of the indicator 812 changes. Counting is achieved by controlling the position of the indicator 812.

[0189] In one implementation, such as Figure 25 and Figure 26 As shown, the second engagement block 84 has a first guide slope 841 at one end facing the first engagement block 83. When the button 4 moves downward to trigger the injection, the second engagement block 84 moves downward until the first guide slope 841 contacts a tooth 821 of the gear 82. As the second engagement block 84 continues to move downward, the tooth 821 moves along the first guide slope 841, and the first guide slope 841 pushes the tooth 821 to rotate, thereby causing the gear 82 to rotate so that the second engagement block 84 enters the tooth groove of the gear 82, so that the second engagement block 84 and the gear 82 mesh.

[0190] Furthermore, such as Figure 25 and Figure 26 As shown, the first engaging block 83 has a second guide slope 831 at one end facing the second engaging block 84. The second guide slope 831 and the first guide slope 841 are inclined towards each other. When the button 4 moves upward to reset, the first engaging block 83 moves until the second guide slope 831 contacts a tooth 821 of the gear 82. As the first engaging block 83 continues to move upward, the tooth 821 moves along the second guide slope 831, which pushes the tooth 821 to rotate, thereby causing the gear 82 to continue to rotate so that the first engaging block 83 enters the tooth groove of the gear 82, so that the first engaging block 83 and the gear 82 mesh.

[0191] Furthermore, such as Figure 25 and Figure 26 As shown, the gear 82 has a third guide slope 8211 at one end of its teeth 821 facing the second meshing block 84. The third guide slope 8211 and the first guide slope 841 cooperate to guide the gear 82 to rotate, which further facilitates the meshing of the second meshing block 84 and the gear 82.

[0192] Furthermore, in order to facilitate the meshing of the first meshing block 83 and the gear 82, the other end of the gear tooth 821 of the gear 82 is provided with a fourth guide slope (not shown in the figure), and the fourth guide slope and the second guide slope 831 cooperate to guide the gear 82 to rotate.

[0193] Taking gear 82, which includes five teeth 821, as an example, the gear 82 includes a first tooth groove, a second tooth groove, a third tooth groove, a fourth tooth groove, and a fifth tooth groove in sequence. The spraying device 100 triggers spraying and liquid suction by moving the button 4 up and down. The first meshing block 83 is located below the second meshing block 84. When the spraying device 100 is not in use, the first engaging block 83 engages with the first tooth groove of the gear 82. Upon first use, pressing the button 4 downwards disengages the gear 82 from the first engaging block 83 and engages with the second engaging block 84. At this time, the gear 82 rotates a certain angle, and the position of the tooth 821 on one side of the first tooth groove changes. The projection of this tooth 821 onto the plane of the end face of the gear 82 at least partially overlaps with the projection of the first engaging block 83. When the button 4 resets, the first engaging block 83 moves to contact the tooth 821. The upward-moving first engaging block 83 pushes the tooth 821. During the rotation of the gear 82, the first engaging block 83 enters the second tooth groove and engages. During the entire process of one spray and one liquid aspiration by the spraying device 100, the gear 82 rotates 72°. During continuous use of the spraying device 100, the first engaging block 83 sequentially engages with the third, fourth, and fifth tooth grooves before re-entering the first tooth groove and repeating the cycle. During the process of the spraying device 100 completing one spray and one liquid suction, the two tooth grooves of the gear 82 that mesh with the first meshing block 83 and the second meshing block 84 respectively can be adjacent or not adjacent.

[0194] It should be understood that the structure of the first meshing block 83, the second meshing block 84, and the gear 82 is not limited to this. The aforementioned guide slope may not be provided. By limiting the projections of the first meshing block 83 and the second meshing block 84 on the plane where the end face of the gear 82 is located, the projections of the first meshing block 83 and the second meshing block 84 on the plane where the end face of the gear 82 is located are not to overlap or only partially overlap, so as to avoid the spacing between the first meshing block 83 and the second meshing block 84 in the direction where the end face of the gear 82 is located being too small, which would affect the alternating meshing of the first meshing block 83 and the second meshing block 84 with the gear 82.

[0195] In one implementation, such as Figure 27 As shown, the housing 6 is provided with a window 6141, which extends along the axial direction of the screw 811 of the counting assembly 81. The user views the indicator 812 from the window 6141 and obtains the current fuzzy counting result based on the position of the indicator 812.

[0196] Furthermore, the housing 6 is provided with an indicator mark 6142, which is disposed on one side of the window 6141. There can be one indicator mark 6142; when the position of the indicator 812, viewed from the window 6141, corresponds to the indicator mark 6142, the indicator mark 6142 indicates that the current spray count has reached a preset value. There can also be multiple indicator marks 6142, all of which are evenly spaced along the extension direction of the window 6141. The user, viewing the indicator 812 from the window 6141, obtains the current count result based on the indicator mark 6142 matching the position of the indicator 812.

[0197] Furthermore, to facilitate users in viewing the counting results, window 6141 and indicator mark 6142 are provided on the front of housing 6, that is, window 6141 and indicator mark 6142 are provided on the first housing 61.

[0198] Furthermore, the indicator mark 6142 can be a scale mark or a text mark, thus enabling precise counting. Of course, the indicator mark 6142 can also be a simple position mark, and the indicator mark 6142 and the window 6141 can be matched to achieve fuzzy counting.

[0199] Furthermore, the window 6141 and the multiple indicator marks 6142 are positioned opposite to the cover 9, which is a transparent part that is aesthetically pleasing, dustproof, and makes it easy to view the indicator marks 6142.

[0200] In one implementation, such as Figure 28 As shown, gear 82 is rotatably connected to housing 6, and screw 811 of counting assembly 81 is rotatably connected to housing 6, making the counting mechanism 8 easy to assemble. Indicator 812 of counting assembly 81 rests against housing 6 so that indicator 812 does not rotate with screw 811.

[0201] Furthermore, such as Figure 25 and Figure 28 As shown, the indicator 812 is provided with a second abutting part 8121, which abuts against the inner wall of the outer casing 6.

[0202] Furthermore, such as Figure 28 As shown, the inner wall of the first housing 61 is provided with a first mounting part 6151 and a second mounting part 6152. One end of the gear 82 is rotatably connected to the first mounting part 6151, and one end of the screw 811 is rotatably connected to the second mounting part 6152.

[0203] Furthermore, such as Figure 25 and Figure 28 As shown, the screw 811 includes a threaded portion 8111 and an optical shaft portion 8112. The inner wall of the first housing 61 is provided with a third mounting portion 6153, and the optical shaft portion 8112 is rotatably connected to the third mounting portion 6153.

[0204] In one implementation, such as Figure 25 and Figure 26 As shown, the inner wall of one side of the button 4 has an arc surface 41, which is in clearance fit with the gear 82. The first meshing block 83 and the second meshing block 84 are respectively connected to the arc surface 41. The arc surface 41 is designed so that the first meshing block 83 and the second meshing block 84 are offset along the circumference of the gear 82.

[0205] In one implementation, such as Figure 25 and Figure 26 As shown, the first engaging block 83 and the second engaging block 84 are integrally formed on the button part 4 to simplify assembly. Of course, the connection between the first engaging block 83 and the second engaging block 84 and the button part 4 is not limited to this. The first engaging block 83 and the second engaging block 84 can be independent components and installed on the button part 4 by other connection methods such as snap-fit ​​or fastener connection.

[0206] Second Implementation Method

[0207] The following is based on Figures 6 to 8 The spraying device according to the second embodiment of the present invention will be described.

[0208] The spraying device in this embodiment has a structure that is largely the same as that in the first embodiment. The differences between the two embodiments will be mainly described below.

[0209] In this embodiment, such as Figures 6 to 8 As shown, the peripheral sidewall of the first one-way valve 23 is clearance-fitted with the first pump port 221. The first one-way valve 23 is provided with a third inclined surface 231, and the first pump port 221 is provided with a fourth inclined surface 2211. Figure 7 As shown, when the piston rod 21 moves away from the container, a vacuum negative pressure is formed in the cavity 224. The third inclined surface 231 and the fourth inclined surface 2211 abut against each other, and the first one-way valve 23 closes the first pump port 221. At this time, the second one-way valve 24 opens the pipe port 251 to achieve liquid aspiration. Figure 8 As shown, when the piston rod 21 moves toward the container bottle 72, the liquid in the cavity 224 is compressed. Under the compression of the liquid, the third inclined surface 231 separates from the fourth inclined surface 2211, and the first one-way valve 23 opens the first pump port 221 to achieve injection. In this embodiment, the first one-way valve 23 has a simple structure and is easy to open and close.

[0210] Third Implementation Method

[0211] The following is based on Figure 9 The spraying device according to the third embodiment of the present invention will be described.

[0212] The spraying device in this embodiment has a structure that is largely the same as that in the first embodiment. The differences between the two embodiments will be mainly described below.

[0213] In this embodiment, such as Figure 9 As shown, the first one-way valve 23 includes a connected column 232 and a third protrusion 233, and the first pump port 221 includes a first abutment portion 2212, with the column 232 and the first pump port 221 in clearance fit. Figure 9 As shown, when the piston rod 21 moves away from the container bottle, a vacuum negative pressure is formed in the cavity 224. The third protrusion 233 abuts against the first contact part 2212, and the first one-way valve 23 closes the first pump port 221. At this time, the second one-way valve 24 opens the pipe port 251 to achieve liquid suction. When the piston rod 21 moves towards the container bottle (not shown in the figure), the liquid in the cavity 224 is squeezed. Under the pressure of the liquid, the third protrusion 233 disengages from the first contact part 2212, and the first one-way valve 23 opens the first pump port 221 to achieve spraying. In this embodiment, the first one-way valve 23 has a simple structure and is easy to open and close.

[0214] In this embodiment, such as Figure 9 As shown, a piston head 27 is provided at one end of the piston rod 21. The piston head 27 is used to seal the end of the piston rod 21 and the contact point of the third pump port 223, thereby achieving a seal and simplifying the assembly structure of the piston rod 21.

[0215] In this embodiment, such as Figure 9 As shown, the second pump port 222 is located above the third pump port 223, and at this time, the container bottle 72 is installed above the pump body assembly 2.

[0216] In this embodiment, such as Figure 9 As shown, the second one-way valve 24 is disposed in the second pump port 222, and the second inclined surface 2511 is disposed on the end face of the inlet pipe 25.

[0217] Fourth Implementation Method

[0218] The following is based on Figures 30 to 34 The spraying device according to the fourth embodiment of the present invention will be described.

[0219] The spraying device in this embodiment has a structure that is largely the same as that in the first to third embodiments. The main differences are described below.

[0220] In this embodiment, such as Figures 30 to 32As shown, the counting mechanism 8 includes a counting disk 85, a ratchet member 86, and a first pawl member 87. A gear portion 851 is provided on one side of the counting disk 85. The ratchet member 86 includes a first ratchet portion 861 and an eccentric wheel 862 coaxially arranged, with the eccentric wheel 862 meshing with the gear portion 851. The first pawl member 87 is connected to the button member 4 of the spraying device 100, and it engages with the first ratchet portion 861. When the button member 4 moves under external force to trigger the spraying device 100 to spray, the first pawl member 87 moves synchronously. Because the first pawl member 87 engages with the first ratchet portion 861, the moving first pawl member 87 can drive the ratchet member 86 to rotate. When the eccentric wheel 862 meshes with the gear portion 851, the counting disk 85 rotates together with the eccentric wheel 862, thus achieving counting.

[0221] By adopting the above technical solution, the ratchet component 86 and the first pawl component 87 are set to form a drive assembly for driving the counting disk 85 to rotate. The overall structure of the counting mechanism 8 is simple and compact. The first pawl component 87 moves synchronously with the button component 4. When the user triggers the spraying and liquid suction by pressing the button component 4, the rotation of the eccentric wheel 862 is also triggered simultaneously, making the operation simple. Furthermore, due to the structural limitations of the eccentric wheel 862, it engages with the gear part 851 of the counting disk 85 once per rotation. When the eccentric wheel 862 and the gear part 851 are not engaged, the eccentric wheel 862 rotates while the counting disk 85 remains stationary during the movement of the button 4. When the eccentric wheel 862 engages with the gear part 851 during its rotation, it will actuate the counting disk 85 once, that is, the counting disk 85 rotates by the angle of one tooth. The counting disk 85 rotates intermittently, which reduces the total number of rotations of the counting disk 85, reduces the drive load of the ratchet part 86, and thus reduces the external force required for the movement of the button 4, making it easier for the user to operate.

[0222] It should be understood that the total number of rotations of the eccentric wheel 862 corresponds to the total number of actual uses of the spray device 100, and each count by the counting disk 85 represents the actual number of uses corresponding to one revolution of the eccentric wheel 862.

[0223] In one implementation, such as Figure 2As shown, the eccentric wheel 862 includes an axle 8621 and a wheel body 8622. The wheel body 8622 is connected to one side of the axle 8621, and the axle 8621 and the first ratchet portion 861 are coaxially arranged. When the first ratchet portion 861 rotates, the axle 8621 rotates synchronously with the first ratchet portion 861. At this time, the wheel body 8622 rotates around the axle 8621. During one rotation of the wheel body 8622, the position of the wheel body 8622 in the circumferential direction of the counting disk 85 changes. Therefore, when the wheel body 8622 rotates once, it meshes with the gear portion 851 of the counting disk 85 once. When the wheel body 8622 passes over the corresponding tooth of the gear portion 851, it will cause the gear portion 851 to rotate by one tooth angle. The eccentric wheel 862 has a simple and compact structure, which can reduce the total number of rotations of the counting disk 85 and is conducive to the miniaturization design of the counting mechanism 8.

[0224] In one implementation, such as Figure 33 and Figure 34 As shown, the outer casing 6 includes a mounting ring 63, with a slot at its bottom. The top of the first casing 61 has a first engaging protrusion 6171, and the top of the second casing 62 has a second engaging protrusion 621. After the first casing 61 and the second casing 62 are assembled, the first engaging protrusion 6171 and the second engaging protrusion 621 together form an annular protrusion, and the mounting ring 63 engages with this annular protrusion to reinforce the connection between the first casing 61 and the second casing 62. Alternatively, the first engaging protrusion 6171, the second engaging protrusion 621, and the mounting ring 63 may not be provided. In this case, the tops of the first casing 61 and the second casing 62 can be integrally formed, creating an opening to accommodate the button component 4.

[0225] In one implementation, such as Figure 30 and Figure 33 As shown, the pump body assembly 2 is located on one side of the counting disk 85, and the ratchet 86 is located on the upper part of the other side of the counting disk 85. The pump body assembly 2 and the counting mechanism 8 are arranged compactly.

[0226] In one embodiment, when the spraying device 100 is in an unused state, the first pawl 87 and the first ratchet 861 do not contact each other, and there is a gap between the first pawl 87 and the first ratchet 861. In this way, when the user accidentally touches the button 4 but does not trigger the spraying, the counting will not be triggered.

[0227] In one implementation, such as Figure 30As shown, the counting mechanism 8 includes a second pawl member 88; the ratchet member 86 includes a second ratchet portion 863, the orientation of the ratchet teeth of the second ratchet portion 863 being the same as the orientation of the ratchet teeth of the first ratchet portion 861. The second ratchet portion 863 and the second pawl member 88 cooperate, with the second pawl member 88 abutting against the ratchet teeth of the second ratchet portion 863 to prevent the ratchet member 86 from reversing and affecting the accuracy of the counting on the counting disk 85.

[0228] Furthermore, such as Figure 30 As shown, there are two first ratchet portions 861, located on both sides of the second ratchet portion 863. There are also two first pawls 87. The two first pawls 87 and the two first ratchet portions 861 are matched one-to-one. In this way, the force applied by the two first pawls 87 to the ratchet 86 is balanced, so as to avoid the ratchet 86 being subjected to uneven force for a long time, which would cause its position to shift and affect the drive of the eccentric wheel 862 to the counting disk 85.

[0229] Furthermore, such as Figure 31 and Figure 32 As shown, the thickness of the first ratchet portion 861 is less than the thickness of the second ratchet portion 863, and the width of the first pawl member 87 is less than the width of the second pawl member 88. This ensures the stability of the engagement between the ratchet member 86, the first pawl member 87, and the second pawl member 88, while also facilitating the miniaturization design of the counting mechanism 8.

[0230] In one embodiment, the first ratchet part 861 includes five ratchet teeth. Each time the spraying device 100 sprays, the ratchet part 86 advances one ratchet tooth, that is, the ratchet part 86 rotates 72°. Each rotation of the ratchet part 86 indicates that the spraying device 100 has been used five times. At this time, the counting disk 85 rotates once.

[0231] In one implementation, such as Figure 31 and Figure 32 As shown, the outer periphery of the counting disk 85 is provided with an indicator 852 for counting. The counting disk 85 has a simple structure.

[0232] Furthermore, the indicator unit 852 includes multiple different color indicator areas, which represent the corresponding remaining usage intervals to achieve fuzzy counting. For example, the indicator unit 852 includes a green indicator area and a red indicator area, with the green indicator area being longer than the red indicator area. When the spraying device 100 is started, the user sees the green indicator area. The green indicator area indicates that there are many usages remaining in the current interval, and the device can be used freely; the red indicator area indicates that there are few usages remaining in the current interval, and the liquid in the container should be replaced or replenished in time.

[0233] Of course, the structure of the indicator 852 is not limited to this; it can also be configured as a scale indicator or a text indicator to achieve accurate counting.

[0234] In one implementation, such as Figure 32 As shown, the gear part 851 is located inside the counting disk 85, and the gear part 851 is an internal gear structure. The gear part 851 is hidden, so the user will not see the gear part 851 when looking at the indicator part 852, thus improving the user experience.

[0235] In one implementation, such as Figure 30 As shown, the first pawl 87 is integrally formed on the button 4 to simplify the assembly of the two. Of course, the connection between the first pawl 87 and the button 4 is not limited to this. The first pawl 87 can be an independent component, installed on the button 4 by other connection methods such as snap-fit ​​or fastener connection.

[0236] In one implementation, such as Figure 30 As shown, the second pawl 88 of the counting mechanism 8 is connected to the housing 6.

[0237] Furthermore, the second pawl 88 is integrally formed into the housing 6 to simplify the assembly of the two. Of course, the connection between the second pawl 88 and the housing 6 is not limited to this; the second pawl 88 can be a separate component, installed on the housing 6 by other connection methods such as snap-fit ​​or fastener connection.

[0238] In one embodiment, the second housing 62 is provided with a first mounting bracket and a second mounting bracket (not shown in the figure). The first mounting bracket has a mounting hole, and the ratchet member 86 is rotatably disposed in the mounting hole. The second mounting bracket includes a first support rib and a second support rib (not shown in the figure) arranged in parallel. The first support rib has a first snap-fit ​​structure, and the second support rib has a second snap-fit ​​structure (not shown in the figure). The two ends of the rotating shaft 853 of the counting disk 85 are respectively snapped to the first snap-fit ​​structure and the second snap-fit ​​structure, making it easy to install and remove the counting disk 85.

[0239] In one implementation, such as Figure 33 and Figure 34 As shown, the outer casing 6 is provided with an indicator port 616, which is used to view the counting results of the counting disk 85.

[0240] In one implementation, such as Figure 33 As shown, the fitting 51 is provided with two fourth protrusions 512, which are located on both sides of a surface of the fitting 51 facing the outlet 613. In this way, the pressure of the first housing 61 on the fourth protrusions 512 can be evenly transmitted to the fourth mounting part for mounting the nozzle seal.

[0241] It should be understood that the above embodiments are exemplary and are not intended to encompass all possible implementations included in the claims. Various modifications and changes can be made to the above embodiments without departing from the scope of this disclosure. Similarly, the various technical features of the above embodiments can be arbitrarily combined to form other embodiments of the invention that may not be explicitly described. Therefore, the above embodiments only illustrate several implementations of the present invention and do not limit the scope of protection of this patent.

Claims

1. A spraying device, characterized in that, The spraying device (100) includes: Actuation mechanism (1) is used to generate linear driving force; The pump assembly (2) includes a piston rod (21) and a pump body (22). One end of the piston rod (21) is connected to the drive part of the actuation mechanism (1), and the other end is slidably connected to the cavity (224) of the pump body (22). Nozzle assembly (3), which is connected to the pump body (22) and includes a nozzle (311); The button (4) can move under external force and trigger the operation of the actuation mechanism (1); The nozzle sealing assembly (5) includes a nozzle seal (52) connected to the button (4); when the spraying device (100) is in the initial state, the nozzle seal (52) seals the nozzle (311). The nozzle sealing assembly (5) also includes a fitting (51); The assembly (51) has a fourth protrusion (512) on one surface away from the nozzle seal (52); the spraying device (100) includes a housing (6), and the inner wall of the housing (6) has a first pressing part (611). When the button (4) moves under external pressure, the actuation mechanism (1) drives the piston rod (21) to move in a fixed amount and the nozzle seal (52) moves synchronously to open the nozzle (311), and the nozzle assembly (3) realizes spraying. The spraying device (100) further includes a mounting bracket (71), which is provided with a second pressing part (711) that abuts against the fitting (51). When the fourth protrusion (512) disengages from the first pressing part (611), the second pressing part (711) pushes the fitting (51) away from the nozzle (311).

2. The spraying device according to claim 1, characterized in that, It also includes a housing (6) having an outlet (613) and the nozzle (311) being positioned opposite each other; the button (4) is at least partially slidably connected within the housing (6).

3. The spraying device according to claim 1, characterized in that, A first check valve (23) is provided at the assembly point of the nozzle assembly (3) and the pump body (22).

4. The spraying device according to claim 1, characterized in that, It also includes a container bottle (72), which is connected to the pump body (22) and a second check valve (24) is provided at the assembly point of the two.

5. The spraying device according to claim 4, characterized in that, It also includes a mounting bracket (71), which is connected to the container bottle (72) and the pump body (22), respectively.

6. The spraying device according to claim 5, characterized in that, The connection method between the container bottle (72) and the mounting bracket (71) includes snap-fit, screw-fit, or magnetic adsorption.

7. The spraying device according to claim 5, characterized in that, The actuation mechanism (1), the pump assembly (2), the mounting bracket (71), and the container bottle (72) are arranged in order from top to bottom.

8. The spraying device according to any one of claims 1-7, characterized in that, The actuation mechanism (1) includes: Connector (11), which is connected to the piston rod (21); The first elastic element (12) is connected to the connecting element (11); Actuator (13), the first end of the first elastic member (12) abuts against the actuator (13); The limiting member (14) includes a first limiting position (141) and a second limiting position (142); when the actuation mechanism (1) is in the initial state, the connecting member (11) is locked to the first limiting position (141). When the button (4) moves under external pressure, the actuator (13) moves under the drive of the button (4) to compress the first elastic member (12) and can cause the connector (11) to disengage from the first limiting position (141). The connector (11) disengaged from the first limiting position (141) can move to the second limiting position (142) in a direction away from the actuator (13) under the action of the first elastic member (12).

9. The spraying device according to claim 8, characterized in that, The actuation mechanism (1) further includes a second elastic element (15), one end of which is used to abut against the actuation element (13), and the other end is in a stop state; When the connector (11) reaches the second limiting position (142), the second elastic member (15) is compressed by the actuator (13) and rebounds, so that the actuator (13) resets together with the connector (11) and the first elastic member (12), and the button (4) resets together with the actuator (13) and causes the nozzle seal (52) to reseal the nozzle (311).

10. The spraying device according to claim 8, characterized in that, The limiting member (14) is connected to the pump body (22).

11. The spraying device according to any one of claims 1-7, characterized in that, The fitting (51) is connected to the button (4); the fitting (51) is provided with a fourth mounting part (511), and the nozzle seal (52) is fixed to the fourth mounting part (511).

12. The spraying device according to claim 11, characterized in that, When the spraying device (100) is in the initial state, the fourth protrusion (512) abuts against the first pressing part (611) so that the nozzle seal (52) is pressed against the nozzle (311); when the spraying device (100) is in the triggered state, the movement direction of the assembly (51) is perpendicular to the axial direction of the nozzle (311), and the four protrusions (512) disengage from the first pressing part (611) and move away from the nozzle (311) along the axial direction.

13. The spraying device according to claim 12, characterized in that, The outer shell (6) is provided with a groove (612) which is connected to the first pressing part (611); When the spray is triggered, the fourth protrusion (512) disengages from the first pressing part (611) and enters the groove (612).

14. The spraying device according to any one of claims 1-7, characterized in that, The spraying device (100) includes a counting mechanism (8) for recording the number of times the spraying device (100) is used.

15. The spraying device according to claim 14, characterized in that, The counting mechanism (8) includes: A counting component (81) is used for counting; The gear (82) can trigger the counting component (81) to count when it rotates; The first engagement block (83) and the second engagement block (84) are both connected to the button (4); the first engagement block (83) and the second engagement block (84) are distributed sequentially along the direction of the central axis of the gear (82), and the first engagement block (83) and the second engagement block (84) are offset along the circumferential direction of the gear (82); When the injection device (100) is in the initial state, the gear (82) and the first meshing block (83) are engaged, and the second meshing block (84) is opposite to one tooth of the gear (82); When the button (4) moves under the action of an external force to trigger the spraying device (100) to spray, the gear (82) and the second meshing block (84) mesh; when the button (4) is reset to trigger the spraying device (100) to aspirate liquid, the gear (82) and the first meshing block (83) mesh, so that the gear (82) rotates in one direction to trigger the counting component (81).

16. The spraying device according to claim 14, characterized in that, The counting mechanism (8) includes: A counting disk (85) has a gear part (851) on one side; The ratchet component (86) includes a first ratchet portion (861) and an eccentric wheel (862) arranged coaxially, the eccentric wheel (862) being used to mesh with the gear portion (851); A first pawl (87) is used to connect to the button (4), and the first pawl (87) and the first ratchet (861) cooperate with each other. When the button (4) moves under external force to trigger the spraying device (100) to spray, the first pawl (87) moves synchronously and drives the ratchet (86) to rotate, and the eccentric wheel (862) drives the counting disk (85) to rotate, thereby realizing counting.

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