Actuating mechanism of a spraying device and spraying device

Abstract

The application relates to an actuating mechanism of a spraying device and the spraying device, and the actuating mechanism comprises a connecting piece used for connecting a piston piece, an actuating piece provided with a first limiting structure, a first force storage spring with one end connected to the connecting piece and the other end in an abutting state, an unlocking structure used for making the connecting piece disengage from the first limiting structure, and a second limiting structure. When the actuating mechanism is in an initial state, the connecting piece is limited by the first limiting structure and abuts against the second limiting structure. When the actuating piece moves under external force to trigger the spraying device, the connecting piece moves synchronously under the limitation of the first limiting structure and compresses the first force storage spring, the connecting piece moves to the unlocking structure to disengage from the first limiting structure, the first force storage spring rebounds to make the connecting piece move reversely, and the connecting piece is re-limited to the reset first limiting structure under the limitation of the second limiting structure. The actuating mechanism is simple in structure and convenient to operate, and can ensure that the spraying dose is accurate and stable.

Description

Technical Field

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

[0002] Currently available manual spraying devices mainly consist of a manual dispensing pump, a spray head, and a container. The manual dispensing pump's chamber contains a one-way valve and is connected to the liquid container. During manual spraying, the internal chamber of the manual dispensing pump is compressed, expelling liquid and air. Then, the pump and the one-way valve work together to draw liquid from the container into the chamber for the next spray. Because the force applied by the user varies, the dosage sprayed by the manual spraying device can be affected, resulting in inconsistent mist patterns and inaccurate metering. Summary of the Invention

[0003] In view of the above-mentioned defects in the prior art, the purpose of the present invention is to provide an actuation mechanism for a spraying device that can ensure accurate and stable spraying dosage, and has a simple structure and convenient operation.

[0004] Therefore, the present invention provides the following technical solution.

[0005] This invention provides an actuation mechanism for a spraying device, the actuation mechanism comprising:

[0006] A connector for connecting the piston component of the injection mechanism of the injection device;

[0007] The actuator is provided with a first limiting structure;

[0008] The first storage spring has one end connected to the connecting member and the other end in a stop state;

[0009] An unlocking structure is used to disengage the connector from the first limiting structure;

[0010] Second limiting structure; when the actuation mechanism is in the initial state, the connecting member is limited to the first limiting structure and abuts against the second limiting structure;

[0011] When the actuator moves under external force to trigger the injection device, the connecting member moves synchronously under the limitation of the first limiting structure and compresses the first energy storage spring. The connecting member moves to trigger the unlocking structure to disengage from the first limiting structure. When the external force is removed, the first energy storage spring rebounds, causing the connecting member to move in the opposite direction. The connecting member is then limited again to the reset first limiting structure under the limitation of the second limiting structure.

[0012] Preferably, it further includes a second storage spring, one end of which is connected to the actuator and the other end is in a stop state;

[0013] When the actuator moves to trigger the injection device, the second storage spring is compressed; when the connector disengages from the first limiting structure, the second storage spring rebounds to reset the actuator.

[0014] Preferably, it further includes a first mounting member for connecting the piston member; the connecting member abuts against the first mounting member and the connecting member is rotatable relative to the first mounting member.

[0015] Preferably, the first mounting member is used to connect with the receiving bottle mounting member of the spraying device, and the first mounting member is used to cooperate with the receiving bottle mounting member to clamp the connecting member.

[0016] Preferably, the connector is used to be sleeved on the outer periphery of the container bottle mounting member, and the first mounting member is used to be screwed onto the container bottle mounting member.

[0017] Preferably, the first storage spring is used to be sleeved on the outer periphery of the receiving bottle of the spraying device, and one end of the first storage spring is used to abut against the receiving bottle mounting component.

[0018] Preferably, the actuator includes a guide structure, and when the first storage spring rebounds, the connecting member moves along the guide structure toward the second limiting structure.

[0019] Preferably, it further includes a second mounting component having a hollow portion, wherein the connector is at least partially located within the hollow portion.

[0020] Preferably, the actuator is at least partially fitted onto the outer periphery of the second mounting member; the second mounting member has an opening, and the connector has a protrusion;

[0021] When the actuation mechanism is in its initial state, the protrusion passes through the opening and is confined within the first limiting structure.

[0022] Preferably, the second storage spring is sleeved on the outer periphery of the second mounting member and one end of the second storage spring is connected to the second mounting member.

[0023] Preferably, one side wall of the opening is a slope, which is used to form the unlocking structure;

[0024] When the connector moves to the point where the protrusion contacts the unlocking structure, the protrusion rotates under the guidance of the unlocking structure so that the protrusion disengages from the first limiting structure.

[0025] Preferably, the other sidewall of the opening is a slope, which is used to form the second limiting structure;

[0026] During the resetting process of the connector, the protrusion rotates under the guidance of the second limiting structure to be confined to the first limiting structure, and the second limiting structure abuts against the protrusion to prevent the protrusion from disengaging from the first limiting structure.

[0027] Preferably, both the first limiting structure and the guide structure are groove structures, and the guide structure extends along the axial direction of the piston.

[0028] Preferably, the extension direction of the first limiting structure is perpendicular to the extension direction of the guide structure.

[0029] The present invention also provides a spraying device, including the actuation mechanism of the spraying device as described above.

[0030] The present invention has the following technical effects:

[0031] This invention provides an actuation mechanism for a spraying device. When a force is applied to the actuating element to trigger the spraying device, the structure of the actuation mechanism limits the reciprocating motion of the piston element to a fixed stroke once the spraying is triggered. This avoids the difference in the force applied by the user affecting the spraying dosage, thus ensuring that the spraying dosage is accurate and stable. Furthermore, the actuation mechanism has a simple overall structure and is easy to operate. Attached Figure Description

[0032] Figure 1 This is a partial exploded view of the spray device of the present invention;

[0033] Figure 2 This is a partial structural cross-sectional view of the injection device of the present invention. Figure 1 ;

[0034] Figure 3 This is a partial structural cross-sectional view of the injection device of the present invention. Figure 2 .

[0035] Explanation of reference numerals in the attached figures

[0036] 100. Spraying device;

[0037] 1. Actuation mechanism;

[0038] 11. Connector; 111. Protrusion; 112. Annular part;

[0039] 12. Actuator; 121. First limiting structure; 122. Guide structure; 123. Relief notch; 124. First cover; 125. Second cover;

[0040] 13. First storage spring;

[0041] 14. Second storage spring;

[0042] 15. Second mounting component; 151. Hollow section; 152. Opening; 1521. Unlocking structure; 1522. Second limiting structure; 153. First pipe section; 154. Second pipe section;

[0043] 16. First mounting component; 161. Threaded connection; 162. Cavity;

[0044] 2. Injection mechanism; 21. Piston component; 22. Pump body; 221. First pump port; 222. Second pump port; 23. Nozzle;

[0045] 3. Bottle mounting components;

[0046] 4. Container bottle. Detailed Implementation

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] In this invention, "upper" and "lower" are both used in the sense of... Figure 2 The markings in the text shall prevail.

[0053] The following is based on Figures 1 to 3 The spraying device of the present invention will be described in detail.

[0054] In this embodiment, such as Figures 1 to 3 As shown, the spraying device 100 includes an actuation mechanism 1, a spraying mechanism 2, and a container bottle 4. The container bottle 4 is used to store liquid. The spraying mechanism 2 includes a piston 21 and a pump body 22. The piston 21 is slidably connected to the cavity of the pump body 22, and the pump body 2 is connected to the container bottle 4.

[0055] like Figures 1 to 3As shown, the actuation mechanism 1 includes a connector 11, an actuator 12, a first storage spring 13, an unlocking structure 1521, and a second limiting structure 1522. The connector 11 is connected to the piston 21 of the injection mechanism of the injection device 100, and the piston 21 can move synchronously with the connector 11. The actuator 12 is provided with a first limiting structure 121. When the actuation mechanism 1 is in the initial state, the first limiting structure 121 and the second limiting structure 1522 are positioned correspondingly, the connector 11 is limited by the first limiting structure 121 and abuts against the second limiting structure 1522, thereby limiting the initial position of the connector 11. One end of the first storage spring 13 is connected to the connector 11, and the other end is in a resisting state. The unlocking structure 1521 is used to disengage the connector 11 from the first limiting structure 121.

[0056] When the actuator 12 moves under external force to trigger the injection device 100 to inject, the connecting member 11 is confined to the first limiting structure 121 of the actuator 12. The connecting member 11 moves synchronously with the first limiting structure 121, and the connecting member 11 compresses the first storage spring 13 due to the movement. When the connecting member 11 moves to the unlocking structure 1521, it triggers the unlocking structure 1521 to disengage the connecting member 11 from the first limiting structure 121. At this time, the connecting member 11 drives the piston 21 to move forward for a fixed stroke (this stroke is the distance between the initial position of the connecting member 11 and the position when the connecting member 11 disengages from the first limiting structure 121). Then, as the connecting member 11 disengages from the first limiting structure 121, when the external force is removed, the connecting member 11 moves in the opposite direction under the rebound force of the first storage spring 13. The connecting member 11, which has moved in the opposite direction, moves to contact the second limiting structure 1522. Under the limitation of the second limiting structure 1522, the connecting member 11 changes its direction of movement. After the actuator 12 is reset, the connecting member 11 is again limited to the first limiting structure 121 of the reset actuator 12, so that the actuator mechanism 1 returns to its initial state. In this way, the connecting member 11 drives the piston 21 to move in the opposite direction for a fixed stroke (this stroke is the distance between the position of the connecting member 11 when it disengages from the first limiting structure 121 and the initial position of the connecting member 11). By driving the piston 21 to reciprocate for a fixed stroke through the actuator 1, the spraying mechanism 2 can realize quantitative spraying and quantitative liquid aspiration from the self-accepting bottle 4.

[0057] By adopting the above technical solution, when the user applies a force to the actuator 12 to trigger the injection device 100 to inject, the actuator 1 can drive the piston 21 to perform a fixed-stroke reciprocating motion, avoiding the influence of different applied forces on the injection dosage, thus ensuring that the injection dosage is accurate and stable. Furthermore, the actuator 1 has a simple overall structure and is easy to operate.

[0058] In one embodiment, the spraying device 100 further includes a second storage spring 14, one end of which is connected to the actuator 12, and the other end is in a stopped state. When the actuator 12 moves to trigger the spraying device 100, the second storage spring 14 is compressed by the moving actuator 12; when the connecting member 11 disengages from the first limiting structure 121, the second storage spring 14 rebounds to reset the actuator 12, and the connecting member 11 moves under the limitation of the second limiting structure 1522 to be re-limited by the first limiting structure 121 of the reset actuator 12. It should be understood that the reset of the actuator 12 is not limited to this, and can also be manually reset.

[0059] In one implementation, such as Figures 1 to 3 As shown, the actuation mechanism 1 also includes a first mounting member 16, which is used to connect the piston member 21. The connecting member 11 abuts against the first mounting member 16, so that when the connecting member 11 moves, it can drive the first mounting member 16 to move together along the axial direction of the piston member 21, and then drive the piston member 21 to move synchronously through the first mounting member 16, thereby changing the air pressure in the cavity of the pump body 22. In addition, the connecting member 11 can rotate relative to the first mounting member 16. Thus, when the connecting member 11 moves to touch the unlocking structure 1521, the connecting member 11 can rotate with the assistance of the unlocking structure 1521 to disengage from the first limiting structure 121, and during the reverse movement of the connecting member 11, the connecting member 11 can rotate under the limitation of the second limiting structure 1522 to re-limit itself in the first limiting structure 121. The limiting or unlocking between the connecting member 11 and the first limiting structure 121 is achieved by rotating the connecting member 11, which is simple to operate. The piston 21 is indirectly connected to the connecting member 11 through the first mounting member 16. In this way, the rotation of the connecting member 11 will not cause the piston 21 to rotate, thus avoiding the assembly relationship between the piston 21 and the pump body 22 from hindering the rotation of the connecting member 11. At the same time, it can also prevent the connecting member 11 from driving the piston 21 to rotate, which would affect the sealing of the assembly of the piston 21 and the pump body 22.

[0060] Furthermore, such as Figure 1 and Figure 2 As shown, the spraying device 100 includes a container bottle mounting member 3 for mounting a container bottle 4. A first mounting member 16 is connected to the container bottle mounting member 3, and the first mounting member 16 and the container bottle mounting member 3 cooperate to clamp the connector 11. The connector 11 is easy to assemble and does not require additional fixing structures (such as screws) to fix the connector 11. In addition, by limiting the clamping force of the first mounting member 16 and the container bottle mounting member 3 on the connector 11, the connector 11 can rotate about its axial direction.

[0061] In one implementation, such as Figures 1 to 3As shown, the injection mechanism 2, the first mounting part 16, the connecting part 11, the container bottle mounting part 3, and the container bottle 4 are arranged from top to bottom in a compact manner. The injection mechanism 2 includes a nozzle 23, and the pump body 22 includes a first pump port 221 and a second pump port 222. The first pump port 221 is used to connect the nozzle 23. One end of the piston 21 is connected to the second pump port 222, and the other end of the piston 21 extends into the container bottle 4. At this time, the piston 21 also functions as a one-way valve. Thus, the pump body 22 has a simple and compact structure. When the actuator 12 moves downward under external force, the connecting part 11, the first mounting part 16, and the piston 21 move downward synchronously. At this time, the internal space of the pump body 22 increases. Under the action of the changing air pressure, the one-way valve structure inside the piston 21 opens, and the liquid in the container bottle 4 enters the pump body 22 through the piston 21, realizing liquid suction. When the actuator 12, connector 11, first mounting member 16 and piston member 21 are reset, the internal space of the pump body 22 becomes smaller, the one-way valve structure inside the piston member 21 is closed, and the injection mechanism 2 realizes injection.

[0062] In one implementation, such as Figures 1 to 3 As shown, the connector 11 includes a protrusion 111 and an annular portion 112. The protrusion 111 is connected to the outer peripheral wall of the annular portion 112, and the annular portion 112 is sleeved on the outer periphery of the bottle-containing mounting component 3. The first mounting component 16 includes a screw connection portion 161, which is screwed to the bottle-containing mounting component 3. The assembly of the first mounting component 16, the connector 11, and the bottle-containing mounting component 3 is simple and convenient.

[0063] Furthermore, such as Figure 1 As shown, the first mounting component 16 is provided with a cavity 162, and the second pump port 222 extends into the cavity. The cavity 162 can play a positioning and installation role in the assembly of the first mounting component 16 and the pump body 22, which facilitates the assembly of the first mounting component 16 and the pump body 22.

[0064] In one implementation, such as Figures 1 to 3 As shown, the first storage spring 13 is sleeved on the outer periphery of the receiving bottle 4 of the spraying device 100, and one end of the first storage spring 13 abuts against the receiving bottle mounting part 3, which reduces the space occupied by the first storage spring 13 and is conducive to the miniaturization design of the spraying device 100.

[0065] In one implementation, such as Figure 2 As shown, the actuator 12 includes a guide structure 122. When the first storage spring 13 rebounds, the connecting member 11 moves along the guide structure 122 toward the second limiting structure 1522, which is conducive to the rapid reset of the connecting member 11.

[0066] Furthermore, the guide structure 122 and the first limiting structure 121 are positioned close to each other, so that during the resetting process of the connector 11, when the connector 11 moves along the guide structure 122 to the second limiting structure 1522, it can quickly move towards the first limiting structure 121 under the limitation of the second limiting structure 1522 and be re-limited by the first limiting structure 121.

[0067] Of course, the arrangement of the guide structure 122 is not limited to this. The guide structure 122 may not be arranged on the actuator 12. The guide structure 122 may be arranged on any component located on the reset path of the connector 11 and matching the first limiting structure 121.

[0068] In one implementation, such as Figures 1 to 3 As shown, the actuation mechanism 1 also includes a second mounting member 15, which has a hollow portion 151. The connecting member 11 is at least partially located in the hollow portion 151. The hollow portion 151 restricts the movement direction of the connecting member 11, so that the connecting member 11 moves along the axial direction of the piston member 21 without moving in other directions.

[0069] Furthermore, such as Figure 1 and Figure 2 As shown, the actuator 12 is at least partially fitted onto the outer periphery of the second mounting member 15. The second mounting member 15 has an opening 152, and the connector 11 has a protrusion 111. The annular portion 112 of the connector 11 is located within the hollow portion 151, and the protrusion 111 extends out of the hollow portion 151 from the opening 152. When the actuation mechanism 1 is in its initial state, the protrusion 111 passes through the opening 152 and is confined to the first limiting structure 121. In this way, the connector 11, the actuator 12, and the second mounting member 15 are arranged compactly, saving space.

[0070] Of course, the assembly structure of the connector 11, actuator 12 and second mounting member 15 is not limited to this. The second mounting member 15 may not have an opening 152, and the actuator 12 may partially extend into the hollow part 151 to limit the protrusion 111 by the first limiting structure 121.

[0071] In one implementation, such as Figures 1 to 3 As shown, the second storage spring 14 is sleeved on the outer periphery of the second mounting member 15, and one end of the second storage spring 14 is connected to the second mounting member 15. This effectively utilizes the space around the second mounting member 15 to install the second storage spring 14, which is beneficial for the miniaturization design of the actuation mechanism 1. In addition, the outer peripheral wall of the second mounting member 15 restricts the direction of movement of the second storage spring 14, causing the second storage spring 14 to move axially along the piston member 21 during compression or rebound.

[0072] Furthermore, such as Figures 1 to 3As shown, the second mounting member 15 is tubular and includes a first pipe section 153 and a second pipe section 154. The outer diameter of the first pipe section 153 is smaller than the outer diameter of the second pipe section 154. The annular portion 112 of the connector 11 is located inside the first pipe section 153. One end of the second storage spring 14 abuts against the end face of the second pipe section 154 facing the first pipe section 153, so that this end of the second storage spring 14 is in a stopped state. The second storage spring 14 is easy to assemble.

[0073] In one implementation, such as Figure 1 and Figure 3 As shown, one sidewall of the opening 152 is a slope. This slope extends obliquely from its first end near the first limiting structure 121 to its second end in a direction away from the first limiting structure 121 and away from the spraying mechanism 2. This slope constitutes the unlocking structure 1521. The unlocking structure 1521 is formed through the sidewall of the opening 152 to simplify the unlocking structure 1521. Figures 1 to 3 As shown, when the connector 11 moves to the point where the protrusion 111 contacts the unlocking structure 1521, under the guidance of the inclined structure of the unlocking structure 1521, the protrusion 111 of the connector 11 rotates along the surface of the unlocking structure 1521 toward the second end of the unlocking structure 1521, so that the protrusion 111 disengages from the first limiting structure 121.

[0074] In one implementation, such as Figure 1 and Figure 3 As shown, the other sidewall of the opening 152 is a slope. This slope extends obliquely from its first end near the first limiting structure 121 in a direction away from the first limiting structure 121 and away from the spraying mechanism 2 to its second end. This slope constitutes the second limiting structure 1522. The first end of the second limiting structure 1522 and the first end of the unlocking structure 1521 are positioned opposite each other, and the second end of the second limiting structure 1522 and the second end of the unlocking structure 1521 are also positioned opposite each other. Figures 1 to 3 As shown, during the resetting process of the connector 11, the protrusion 111 moves to contact the second limiting structure 1522, and the protrusion 111 rotates along the surface of the second limiting structure 1522 toward the first end of the second limiting structure 1522. The protrusion 111 rotates to be re-limited in the first limiting structure 121, and the inclined structure of the second limiting structure 1522 can abut against the protrusion 111 to prevent the protrusion 111 from disengaging from the first limiting structure 121.

[0075] In one implementation, such as Figure 2 As shown, both the first limiting structure 121 and the guide structure 122 are groove structures. The guide structure 122 extends along the axial direction of the piston 21. The actuator 12 has a simple structure and is easy to process.

[0076] Furthermore, such as Figure 2As shown, the extension direction of the first limiting structure 121 is perpendicular to the extension direction of the guide structure 122. When the actuation mechanism is in the initial state, the first limiting structure 121 can stably limit the protrusion 111 of the connector 11, and when the injection device is triggered, the protrusion 111 can disengage from the first limiting structure 121.

[0077] In one implementation, such as Figure 1 and Figure 2 As shown, the actuator 12 is a housing structure with a clearance notch 123. The injection mechanism 2 is located inside the actuator 12, and the injection mechanism 2 and the clearance notch 123 are positioned opposite each other. This ensures that when the actuator 12 moves under external force, it and the injection mechanism 2 do not interfere with each other. The second mounting member 15 is at least partially located inside the actuator 12. The compact arrangement of all components facilitates the miniaturization design of the actuator mechanism 1. Figures 1 to 3 As shown, pressing down on the actuator 12 triggers the injection device 100. The first limiting structure 121 drives the protrusion 111 of the connector 11 to move downward synchronously. The connector 11, together with the piston 21, the first mounting member 16, the container mounting member 3 and the container, move downward synchronously. The first storage spring 13 is compressed under the pressure of the container mounting member 3, and the second storage spring 14 is compressed under the pressure of the protrusion 111. When the protrusion 111 moves along the opening 152 to contact the unlocking structure 1521, the protrusion 111, guided by the inclined structure of the unlocking structure 1521, causes the connector 11 to rotate, thereby causing the protrusion 111 to disengage from the first limiting structure 121 of the actuator 12. After disengaging from the first limiting structure 121, the protrusion 111 enters the guide structure 122 and moves along the guide structure 122 to contact the second limiting structure 1522 under the rebound of the first storage spring 13. Under the guidance of the inclined structure of the second limiting structure 1522, the protrusion 111 causes the connector 11 to rotate in the opposite direction, thereby causing the protrusion 111 to re-enter the first limiting structure 121.

[0078] Furthermore, such as Figure 2 As shown, the actuator 12 includes a first cover 124 and a second cover 125. The first cover 124 is located inside the second cover 125. The first limiting structure 121 and the guide structure 122 are both disposed on the first cover 124. By providing the second cover 125, the first limiting structure 121 and the guide structure 122 are hidden, thereby improving the aesthetic appearance of the spraying device 100.

[0079] 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 present 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. An actuation mechanism for a spraying device, the spraying device comprising a spraying mechanism (2) and a receiving bottle (4), the spraying mechanism (2) comprising a piston (21) and a pump body (22), the piston (21) being slidably connected to a cavity of the pump body (22), the pump body (22) being connected to the receiving bottle (4), characterized in that, The actuation mechanism (1) includes: Connector (11), which is used to connect the piston (21) of the injection mechanism of the injection device (100). Actuator (12) is provided with a first limiting structure (121); The first energy storage spring (13) has one end connected to the connector (11) and the other end in a stop state; Unlocking structure (1521) is used to disengage the connector (11) from the first limiting structure (121). Second limiting structure (1522); when the actuation mechanism (1) is in the initial state, the connecting member (11) is limited to the first limiting structure (121) and abuts against the second limiting structure (1522). When the actuator (12) moves under external force to trigger the injection device (100), the connector (11) moves synchronously under the limitation of the first limiting structure (121) and compresses the first energy storage spring (13). The connector (11) moves to trigger the unlocking structure (1521) to disengage from the first limiting structure (121). When the external force is removed, the first energy storage spring (13) rebounds, causing the connector (11) to move in the opposite direction. The connector (11) is then limited to the reset first limiting structure (121) under the limitation of the second limiting structure (1522). The piston (21) is driven by the actuation mechanism (1) to perform a fixed-stroke reciprocating motion, so that the spraying mechanism (2) can perform quantitative spraying and quantitative liquid aspiration from the self-accepting bottle (4).

2. The actuation mechanism of the injection device according to claim 1, characterized in that, It also includes a second storage spring (14), one end of which is connected to the actuator (12), and the other end is in a stop state; When the actuator (12) moves to trigger the injection device (100), the second storage spring (14) is compressed; when the connector (11) disengages from the first limiting structure (121), the second storage spring (14) rebounds to reset the actuator (12).

3. The actuation mechanism of the injection device according to claim 1, characterized in that, It also includes a first mounting member (16) for connecting the piston member (21); the connecting member (11) abuts against the first mounting member (16) and the connecting member (11) is rotatable relative to the first mounting member (16).

4. The actuation mechanism of the injection device according to claim 3, characterized in that, The first mounting member (16) is used to connect with the container mounting member (3) of the spraying device (100), and the first mounting member (16) is used to cooperate with the container mounting member (3) to clamp the connector (11).

5. The actuation mechanism of the injection device according to claim 4, characterized in that, The connector (11) is used to be fitted onto the outer periphery of the container bottle mounting member (3), and the first mounting member (16) is used to be screwed onto the container bottle mounting member (3).

6. The actuation mechanism of the injection device according to claim 4, characterized in that, The first energy storage spring (13) is used to be sleeved on the outer periphery of the container (4) of the spray device (100), and one end of the first energy storage spring (13) is used to abut against the container mounting part (3).

7. The actuation mechanism of the injection device according to any one of claims 1-6, characterized in that, The actuator (12) includes a guide structure (122), and when the first energy storage spring (13) rebounds, the connector (11) moves along the guide structure (122) toward the second limiting structure (1522).

8. The actuation mechanism of the injection device according to claim 2, characterized in that, It also includes a second mounting component (15) having a hollow portion (151), wherein the connector (11) is at least partially located within the hollow portion (151).

9. The actuation mechanism of the injection device according to claim 8, characterized in that, The actuator (12) is at least partially fitted around the outer periphery of the second mounting member (15); the second mounting member (15) has an opening (152), and the connector (11) has a protrusion (111). When the actuation mechanism (1) is in the initial state, the protrusion (111) passes through the opening (152) and is confined to the first limiting structure (121).

10. The actuation mechanism of the injection device according to claim 9, characterized in that, The second energy storage spring (14) is sleeved on the outer periphery of the second mounting member (15) and one end of the second energy storage spring (14) is connected to the second mounting member (15).

11. The actuation mechanism of the injection device according to claim 9, characterized in that, One side wall of the opening (152) is a slope, which is used to form the unlocking structure (1521). When the connector (11) moves to the point where the protrusion (111) contacts the unlocking structure (1521), the protrusion (111) rotates under the guidance of the unlocking structure (1521) so that the protrusion (111) disengages from the first limiting structure (121).

12. The actuation mechanism of the injection device according to claim 9, characterized in that, The other sidewall of the opening (152) is a slope, which is used to form the second limiting structure (1522). During the resetting process of the connector (11), the protrusion (111) rotates under the guidance of the second limiting structure (1522) to be limited to the first limiting structure (121), and the second limiting structure (1522) abuts against the protrusion (111) to prevent the protrusion (111) from disengaging from the first limiting structure (121).

13. The actuation mechanism of the injection device according to claim 7, characterized in that, The first limiting structure (121) and the guide structure (122) are both groove structures, and the guide structure (122) extends along the axial direction of the piston (21).

14. The actuation mechanism of the injection device according to claim 13, characterized in that, The extension direction of the first limiting structure (121) is perpendicular to the extension direction of the guide structure (122).

15. A spraying device, characterized in that, Includes the actuation mechanism of the injection device as described in any one of claims 1-14.

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