CN220160277U - Actuating mechanism of injection device and injection device - Google Patents

Abstract

The utility model relates to an actuating mechanism of a spraying device and the spraying device, comprising: the connecting piece is used for connecting the piston piece; the actuating piece is provided with a first limiting structure; one end of the first power storage spring is connected with the connecting piece, and the other end of the first power storage spring is in a propping state; the unlocking structure is used for enabling the connecting piece to be separated from the first limiting structure; a second limit structure; when the actuating mechanism is in an initial state, the connecting piece is limited on the first limiting structure and is abutted against the second limiting structure; when the actuating piece moves under the external force to trigger the spraying device, the connecting piece synchronously moves and compresses the first power storage spring under the limit of the first limit structure, the connecting piece moves to trigger the unlocking structure to separate from the first limit structure, the first power storage spring rebounds to enable the connecting piece to reversely move, and the connecting piece is limited in the first limit structure after reset again under the limit of the second limit structure. The actuating mechanism is simple in structure and convenient to operate, and can ensure accurate and stable injection dosage.

Description

Actuating mechanism of injection device and injection device

Technical Field

The present disclosure relates to a spraying device, and particularly to an actuating mechanism of a spraying device and a spraying device.

Background

The main structure of the manual spraying device on the market at present comprises a manual dispensing pump, a spraying head and a container, wherein a one-way valve is arranged in a cavity of the manual dispensing pump, and the cavity of the manual dispensing pump is connected with the liquid container. When spraying manually, the liquid and air are extruded by compressing the internal cavity of the manual dispensing pump, and then the liquid in the liquid container is pumped into the cavity by the cooperation of the manual dispensing pump and the one-way valve for the next spraying. Because the difference of user's applied force can influence the dose that manual atomizer sprayed, and the spraying effect can't accomplish fog formula stability, measures accurately.

Disclosure of Invention

Based on the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide an actuating mechanism of an injection device, which can ensure that the injection dosage of the injection device is accurate and stable, and has a simple structure and convenient operation.

Therefore, the utility model provides the following technical scheme.

The present utility model provides an actuation mechanism for an injection device, the actuation mechanism comprising:

a connecting member for connecting a piston member of an injection mechanism of the injection device;

an actuating member provided with a first limit structure;

one end of the first power accumulating spring is connected with the connecting piece, and the other end of the first power accumulating spring is in a propping state;

the unlocking structure is used for enabling the connecting piece to be separated from the first limiting structure;

a second limit structure; when the actuating mechanism is in an initial state, the connecting piece is limited in the first limiting structure and is abutted against the second limiting structure;

when the external force is removed, the first force storage spring rebounds to enable the connecting piece to reversely move, and the connecting piece is limited by the second limiting structure and is limited by the first limiting structure after reset.

Preferably, the device further comprises a second power storage spring, one end of the second power storage spring is connected with the actuating piece, and the other end of the second power storage spring is in a propped state;

the second power spring is compressed when the actuator moves to trigger the injection device; when the connecting piece is separated from the first limiting structure, the second power spring rebounds to enable the actuating piece to reset.

Preferably, the piston member further comprises a first mounting member for connecting the piston member; the connecting piece and the first mounting piece are propped against each other, and the connecting piece can rotate relative to the first mounting piece.

Preferably, the first mounting member is configured to be connected to a bottle receiving mounting member of the spraying device, and the first mounting member is configured to cooperate with the bottle receiving mounting member to clamp the connecting member.

Preferably, the connecting piece is used for sleeving the periphery of the accommodating bottle mounting piece, and the first mounting piece is used for being in threaded connection with the accommodating bottle mounting piece.

Preferably, the first power spring is used for being sleeved on the periphery of the accommodating bottle of the injection device, and one end of the first power spring is used for being abutted to the accommodating bottle mounting piece.

Preferably, the actuating member includes a guide structure along which the connecting member moves towards the second limit structure as the first power spring bounces.

Preferably, a second mounting member is also included, provided with a hollow portion, the connecting member being located at least partially within the hollow portion.

Preferably, the actuating member is at least partially sleeved on the outer periphery of the second mounting member; the second mounting piece is provided with an opening, and the connecting piece is provided with a protruding part;

when the actuating mechanism is in an initial state, the protruding part penetrates through the opening and is limited to the first limiting structure.

Preferably, the second power accumulating spring is sleeved on the periphery of the second mounting piece, and one end of the second power accumulating spring is connected to the second mounting piece.

Preferably, a side wall of the opening is an inclined plane, which is used for forming the unlocking structure;

when the connecting piece moves to the state that the protruding portion is in contact with the unlocking structure, the protruding portion rotates under the guidance of the unlocking structure, so that the protruding portion is separated from the first limiting structure.

Preferably, the other side wall of the opening is an inclined plane, which is used for forming the second limiting structure;

in the resetting process of the connecting piece, the protruding part rotates under the guidance of the second limiting structure to be limited by the first limiting structure, and the second limiting structure abuts against the protruding part to prevent the protruding part from being separated from the first limiting structure.

Preferably, the first limiting structure and the guiding structure are both groove structures, and the guiding structure extends along the axial direction of the piston member.

Preferably, the extending direction of the first limiting structure is perpendicular to the extending direction of the guiding structure.

The utility model also provides a spraying device comprising an actuating mechanism of the spraying device as described above.

The utility model has the following technical effects:

the utility model provides an actuating mechanism of an injection device, when acting force is applied on an actuating member to trigger the injection device to inject, the actuating mechanism is limited by the structure of the actuating mechanism, once the injection is triggered, a connecting member of the actuating mechanism can drive a piston member to reciprocate in a fixed stroke, so that the influence of different applied forces of a user on the injected dosage is avoided, the accurate and stable injected dosage is ensured, and the actuating mechanism has a simple integral structure and is easy and convenient to operate.

Drawings

FIG. 1 is an exploded view of a partial structure of a spray device of the present utility model;

FIG. 2 is a partial cross-sectional view of the spray device of the present utility model;

fig. 3 is a partial structural sectional view of the injection device of the present utility model.

Description of the reference numerals

100. A spraying device;

1. an actuating mechanism;

11. a connecting piece; 111. a boss; 112. an annular portion;

12. an actuator; 121. a first limit structure; 122. a guide structure; 123. a relief notch; 124. a first housing; 125. a second housing;

13. a first power spring;

14. a second power spring;

15. a second mounting member; 151. a hollow portion; 152. an opening; 1521. an unlocking structure; 1522. a second limit structure; 153. a first pipe section; 154. a second pipe section;

16. a first mounting member; 161. a screw connection part; 162. a cavity;

2. a spraying mechanism; 21. a piston member; 22. a pump body; 221. a first pump port; 222. a second pump port; 23. a nozzle;

3. accommodating a bottle mount;

4. containing the bottle.

Detailed Description

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

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

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

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

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

The references to "upper" and "lower" in this utility model are both made to the designation in fig. 2.

The spraying device of the present utility model will be described in detail with reference to fig. 1 to 3.

In the present embodiment, as shown in fig. 1 to 3, the spraying device 100 includes an actuating mechanism 1, a spraying mechanism 2, and a containing bottle 4, the containing bottle 4 is used to store liquid, the spraying mechanism 2 includes a piston member 21 and a pump body 22, the piston member 21 is slidably connected with a cavity of the pump body 22, and the pump body 2 is connected with the containing bottle 4.

As shown in fig. 1 to 3, the actuating mechanism 1 includes a connecting member 11, an actuating member 12, a first power spring 13, an unlocking structure 1521, and a second limiting structure 1522. The connecting member 11 is connected to a piston member 21 of the injection mechanism of the injection device 100, and the piston member 21 can move synchronously with the connecting member 11. The actuating member 12 is provided with a first limiting structure 121, when the actuating mechanism 1 is in an initial state, the positions of the first limiting structure 121 and the second limiting structure 1522 are corresponding, the connecting member 11 is limited to the first limiting structure 121, and the connecting member 11 abuts against the second limiting structure 1522, so as to limit the initial position of the connecting member 11. One end of the first power spring 13 is connected to the connecting member 11, and the other end is in a stopped state. The unlocking structure 1521 is configured to disengage the connecting member 11 from the first limiting structure 121.

When the actuating member 12 moves under the external force to trigger the spraying device 100 to spray, the connecting member 11 moves synchronously along with the first limiting structure 121 due to the fact that the connecting member 11 is limited on the first limiting structure 121 of the actuating member 12, and the connecting member 11 compresses the first power spring 13 due to the movement. When the connecting member 11 moves to the unlocking structure 1521, the unlocking structure 1521 is triggered to disengage the connecting member 11 from the first limiting structure 121, and at this time, the connecting member 11 drives the piston member 21 to perform a forward movement of a fixed distance (the distance is the distance between the initial position of the connecting member 11 and the position when the connecting member 11 is disengaged from the first limiting structure 121). Then, when the external force is removed, the connecting piece 11 moves reversely under the rebound force of the first power storage spring 13, the connecting piece 11 moving reversely moves to contact the second limiting structure 1522, the connecting piece 11 changes the moving direction under the limit of the second limiting structure 1522, after the actuating piece 12 is reset, the connecting piece 11 is limited on the first limiting structure 121 of the actuating piece 12 after reset, so that the actuating mechanism 1 is restored to the initial state, and in this way, the connecting piece 11 drives the piston piece 21 to move reversely in a fixed way (the distance between the position when the connecting piece 11 is separated from the first limiting structure 121 and the initial position of the connecting piece 11). The piston member 21 is driven by the actuating mechanism 1 to reciprocate by a fixed stroke so that the spraying mechanism 2 performs both the quantitative spraying and the quantitative pipetting from the bottle 4.

Through adopting above-mentioned technical scheme, when the user is through exerting effort in order to trigger injection device 100 and spray on actuating piece 12, can drive piston piece 21 to take place the reciprocating motion of fixed stroke through actuating mechanism 1, avoid the user to exert the difference and influence the dose of spraying of force to ensure accurate and stable of injection dose, and actuating mechanism 1 overall structure is simple and easy and simple to handle.

In one embodiment, the injection device 100 further includes a second power spring 14 having one end connected to the actuator 12 and the other end in an abutting state. When the actuator 12 moves to trigger the spraying device 100, the second power spring 14 is compressed by the moving actuator 12; when the connecting piece 11 is separated from the first limiting structure 121, the second power spring 14 rebounds to reset the actuating piece 12, and the connecting piece 11 moves to the first limiting structure 121 of the reset actuating piece 12 under the limit of the second limiting structure 1522. It should be appreciated that the resetting of the actuator 12 is not limited thereto and may also be manually reset.

In one embodiment, as shown in fig. 1 to 3, the actuating mechanism 1 further comprises a first mounting member 16, the first mounting member 16 being adapted to be coupled to the piston member 21. The connecting piece 11 is propped against the first mounting piece 16, so that the first mounting piece 16 can be driven to move along the axial direction of the piston piece 21 together when the connecting piece 11 moves, and then the first mounting piece 16 drives the piston piece 21 to synchronously move, so that the air pressure in the cavity of the pump body 22 is changed. In addition, the connecting piece 11 can rotate relative to the first mounting piece 16, so when the connecting piece 11 moves to touch the unlocking structure 1521, the connecting piece 11 can rotate with the assistance of the unlocking structure 1521 to separate from the first limiting structure 121, and during the reverse movement of the connecting piece 11, the connecting piece 11 can rotate under the limitation of the second limiting structure 1522 to be limited again on the first limiting structure 121. The limit or the unlocking between the connecting piece 11 and the first limit structure 121 is realized through the rotation of the connecting piece 11, the operation is simple and convenient, and the piston piece 21 is indirectly connected to the connecting piece 11 through the first mounting piece 16, so that the rotation of the connecting piece 11 can not lead to the rotation of the piston piece 21, the assembly relation between the piston piece 21 and the pump body 22 is avoided to prevent the rotation of the connecting piece 11, and meanwhile, the sealing performance of the assembly part of the piston piece 21 and the pump body 22 can be prevented from being influenced by the rotation of the connecting piece 11 to drive the piston piece 21.

Further, as shown in fig. 1 and 2, the spraying device 100 includes a containing bottle mount 3, and the containing bottle mount 3 is used to mount the containing bottle 4. The first mounting member 16 is connected with the accommodating bottle mounting member 3, the first mounting member 16 and the accommodating bottle mounting member 3 cooperate to clamp the connecting member 11, the connecting member 11 is simple to assemble, no additional fixing structure (such as a screw) is required to fix the connecting member 11, and in addition, the clamping force of the first mounting member 16 and the accommodating bottle mounting member 3 to the connecting member 11 is limited, so that the connecting member 11 can rotate around the axial direction thereof.

In one embodiment, as shown in fig. 1 to 3, the spraying mechanism 2, the first mounting member 16, the connecting member 11, the accommodating bottle mounting member 3 and the accommodating bottle 4 are arranged in this order from top to bottom, and the arrangement is compact. The injection mechanism 2 comprises a nozzle 23, the pump body 22 comprises a first pump opening 221 and a second pump opening 222, the first pump opening 221 is used for being connected with the nozzle 23, one end of the piston member 21 is connected with the second pump opening 222, the other end of the piston member 21 stretches into the accommodating bottle 4, and at the moment, the piston member 21 is further provided with a one-way valve, so that the pump body 22 is simple and small in structure. When the actuating member 12 moves downward under an external force, the connecting member 11, the first mounting member 16 and the piston member 21 move downward synchronously, and at this time, the space in the cavity of the pump body 22 becomes large, and under the action of the varying air pressure, the check valve structure inside the piston member 21 opens, and the liquid in the holding bottle 4 enters the pump body 22 through the piston member 21, thereby achieving liquid suction. When the actuating member 12, the connecting member 11, the first mounting member 16 and the piston member 21 are reset, the space in the cavity of the pump body 22 becomes small, the check valve structure inside the piston member 21 is closed, and the injection mechanism 2 achieves injection.

In one embodiment, as shown in fig. 1 to 3, the connector 11 includes a protrusion 111 and an annular portion 112, the protrusion 111 is connected to an outer peripheral wall of the annular portion 112, and the annular portion 112 is sleeved on an outer periphery of the accommodating bottle mounting member 3. The first mounting piece 16 comprises the screw connection part 161, the first mounting piece 16 is in screw connection with the accommodating bottle mounting piece 3 through the screw connection part 161, and the first mounting piece 16, the connecting piece 11 and the accommodating bottle mounting piece 3 are easy and convenient to assemble.

Further, as shown in fig. 1, the first mounting member 16 is provided with a cavity 162, the second pump port 222 extends into the cavity, and the cavity 162 can perform positioning and mounting functions on the assembly of the first mounting member 16 and the pump body 22, so that the assembly of the first mounting member 16 and the pump body 22 is facilitated.

In an embodiment, as shown in fig. 1 to 3, the first power spring 13 is sleeved on the outer periphery of the accommodating bottle 4 of the injection device 100, one end of the first power spring 13 is abutted to the accommodating bottle mounting member 3, so that the occupied space of the first power spring 13 is reduced, and the miniaturization design of the injection device 100 is facilitated.

In one embodiment, as shown in fig. 2, the actuating member 12 includes a guiding structure 122, and when the first power spring 13 rebounds, the connecting member 11 moves along the guiding structure 122 toward the second limiting structure 1522, so as to facilitate quick return of the connecting member 11.

Further, the guiding structure 122 and the first limiting structure 121 are disposed close to each other, so that when the connecting piece 11 is moved to the second limiting structure 1522 along the guiding structure 122 in the resetting process of the connecting piece 11, the connecting piece 11 can move to the first limiting structure 121 rapidly and be limited to the first limiting structure 121 again under the limitation of the second limiting structure 1522.

Of course, the arrangement of the guide structure 122 is not limited to this, and the guide structure 122 may not be provided on the actuator 12, and the guide structure 122 may be provided on a member located at any position on the reset path of the connecting member 11 and matched with the first limiting structure 121.

In an embodiment, as shown in fig. 1 to 3, the actuating mechanism 1 further comprises a second mounting member 15 provided with a hollow 151, the connecting member 11 being at least partially located within the hollow 151, the direction of movement of the connecting member 11 being limited by the hollow 151 such that the connecting member 11 moves in the axial direction of the piston member 21 without movement in other directions.

Further, as shown in fig. 1 and 2, the actuating member 12 is at least partially sleeved on the outer periphery of the second mounting member 15, the second mounting member 15 is provided with an opening 152, the connecting member 11 is provided with a protruding portion 111, the annular portion 112 of the connecting member 11 is located in the hollow portion 151, and the protruding portion 111 penetrates out of the hollow portion 151 from the opening 152. When the actuating mechanism 1 is in the initial state, the protruding portion 111 passes through the opening 152 and is limited to the first limiting structure 121. In this way, the connection 11, the actuating member 12 and the second mounting member 15 are arranged compactly, saving space.

Of course, the assembly structure of the connecting member 11, the actuating member 12 and the second mounting member 15 is not limited thereto, and the second mounting member 15 may not be provided with the opening 152, and the actuating member 12 may partially extend into the hollow portion 151 to achieve the limitation of the first limitation structure 121 to the protruding portion 111.

In an embodiment, as shown in fig. 1 to 3, the second power spring 14 is sleeved on the outer side Zhou Judi of the second mounting member 15, one end of the second power spring 14 is connected to the second mounting member 15, and the second power spring 14 is mounted by effectively using the space on the outer periphery of the second mounting member 15, which is beneficial to the miniaturization design of the actuating mechanism 1. In addition, the outer peripheral wall of the second mounting member 15 restricts the movement direction of the second power spring 14 such that the second power spring 14 moves in the axial direction of the piston member 21 during compression or rebound

Further, as shown in fig. 1 to 3, 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 that of the second pipe section 154, the annular portion 112 of the connecting member 11 is located in the first pipe section 153, and one end of the second power spring 14 abuts against the end face of the second pipe section 154 facing the first pipe section 153, so that the end of the second power spring 14 is in an abutting state, and the second power spring 14 is convenient to assemble.

In an embodiment, as shown in fig. 1 and 3, a side wall of the opening 152 is a slope, the slope extends from a first end thereof close to the first limiting structure 121 to a second end thereof in a direction away from the first limiting structure 121 and away from the spraying mechanism 2, the slope forms an unlocking structure 1521, and the unlocking structure 1521 is formed by the side wall of the opening 152 to simplify the unlocking structure 1521. As shown in fig. 1 to 3, when the connection member 11 moves until the protrusion 111 contacts the unlocking structure 1521, the protrusion 111 of the connection member 11 rotates along the surface of the unlocking structure 1521 toward the second end of the unlocking structure 1521 under the guiding action of the inclined surface structure of the unlocking structure 1521, so that the protrusion 111 is separated from the first limiting structure 121.

In an embodiment, as shown in fig. 1 and 3, the other side wall of the opening 152 is a slope, and the slope extends from a first end of the slope close to the first limiting structure 121 to a second end of the slope in a direction away from the first limiting structure 121 and away from the injection mechanism 2, where the slope forms a second limiting structure 1522, and the first end of the second limiting structure 1522 is opposite to the first end of the unlocking structure 1521, and the second end of the second limiting structure 1522 is opposite to the second end of the unlocking structure 1521. As shown in fig. 1 to 3, during the resetting process of the connecting piece 11, the protruding portion 111 moves until the protruding portion contacts the second limiting structure 1522, the protruding portion 111 rotates along the surface of the second limiting structure 1522 towards the direction of the first end of the second limiting structure 1522, the protruding portion 111 rotates to be re-limited to the first limiting structure 121, and the inclined surface structure of the second limiting structure 1522 can play a role of propping against the protruding portion 111 to prevent the protruding portion 111 from being separated from the first limiting structure 121.

In one embodiment, as shown in fig. 2, the first limiting structure 121 and the guiding structure 122 are both groove structures, the guiding structure 122 extends along the axial direction of the piston member 21, and the actuating member 12 is simple in structure and convenient to process.

Further, as shown in fig. 2, the extending direction of the first limiting structure 121 is perpendicular to the extending direction of the guiding structure 122, so that the first limiting structure 121 is convenient to stably limit the protruding portion 111 of the connecting member 11 when the actuating mechanism is in the initial state, and the protruding portion 111 is convenient to separate from the first limiting structure 121 when the spraying device is triggered.

In one embodiment, as shown in fig. 1 and 2, the actuating member 12 is a casing structure, the actuating member 12 is provided with a yielding gap 123, the spraying mechanism 2 is located in the actuating member 12, and the spraying mechanism 2 and the yielding gap 123 are located opposite to each other, so that the actuating member 12 and the spraying mechanism 2 do not interfere with each other when moving under an external force. The second mounting member 15 is at least partially located within the actuating member 12 and the arrangement of the components is compact, facilitating a compact design of the actuating mechanism 1. As shown in fig. 1 to 3, the actuating member 12 is pressed downward to trigger the spraying device 100, the first limiting structure 121 drives the boss 111 of the connecting member 11 to move downward synchronously, and the connecting member 11 moves downward synchronously together with the piston member 21, the first mounting member 16, the bottle mounting member 3 and the bottle, the first power spring 13 is compressed under the pressing of the bottle mounting member 3, and the second power spring 14 is compressed under the pressing of the boss 111. When the protrusion 111 moves along the opening 152 until it contacts with the unlocking structure 1521, the protrusion 111 rotates the connecting piece 11 under the guiding of the inclined surface structure of the unlocking structure 1521, so that the protrusion 111 is separated from the first limiting structure 121 of the actuating piece 12, and then enters the guiding structure 122 after being separated from the first limiting structure 121, and moves along the guiding structure 122 until it contacts with the second limiting structure 1522 under the rebound of the first power spring 13, and the protrusion 111 reversely rotates the connecting piece 11 under the guiding of the inclined surface structure of the second limiting structure 1522, so that the protrusion 111 is blocked into the first limiting structure 121 again.

Further, as shown in fig. 2, the actuator 12 includes a first housing 124 and a second housing 125, the first housing 124 being located within the second housing 125, and the first limiting structure 121 and the guiding structure 122 being disposed on the first housing 124. By providing the second cover 125 to conceal the first limiting structure 121 and the guiding structure 122, the aesthetic appearance of the spraying device 100 is improved.

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

Claims (15)

1. An actuation mechanism of an injection device, characterized in that the actuation mechanism (1) comprises:

a connecting element (11) for connecting a piston element (21) of an injection mechanism of the injection device (100);

an actuator (12) provided with a first limit structure (121);

a first power storage spring (13) with one end connected to the connecting piece (11) and the other end in a propped state;

an unlocking structure (1521) for disengaging the connecting piece (11) from the first limiting structure (121);

a second limit structure (1522); when the actuating mechanism (1) is in an initial state, the connecting piece (11) is limited on the first limiting structure (121) and is abutted against the second limiting structure (1522);

when the actuating member (12) moves under external force to trigger the spraying device (100), the connecting member (11) moves synchronously and compresses the first power storage spring (13) under the limit of the first limit structure (121), the connecting member (11) moves to trigger the unlocking structure (1521) to be separated from the first limit structure (121), when the external force is removed, the first power storage spring (13) rebounds to enable the connecting member (11) to move reversely, and the connecting member (11) is limited to the first limit structure (121) after reset again under the limit of the second limit structure (1522).

2. An actuating mechanism for an injection device according to claim 1, further comprising a second power spring (14) having one end connected to said actuating member (12) and the other end in an abutting condition;

-said second power spring (14) is compressed when said actuating member (12) moves to trigger said injection device (100); when the connecting piece (11) is separated from the first limiting structure (121), the second power storage spring (14) rebounds to enable the actuating piece (12) to reset.

3. The actuation mechanism of the injection device according to claim 1, further comprising a first mounting member (16) for connecting the piston member (21); the connecting piece (11) is propped against the first mounting piece (16), and the connecting piece (11) can rotate relative to the first mounting piece (16).

4. An actuation mechanism of a spraying device according to claim 3, characterized in that the first mounting (16) is adapted to be connected to a containing bottle mounting (3) of the spraying device (100), the first mounting (16) being adapted to cooperate with the containing bottle mounting (3) to hold the connecting member (11).

5. The actuation mechanism of the spraying device according to claim 4, characterized in that the connecting piece (11) is arranged to be sleeved on the outer periphery of the containing bottle mounting piece (3), and the first mounting piece (16) is arranged to be screwed to the containing bottle mounting piece (3).

6. The actuating mechanism of the injection device according to claim 4, wherein the first power spring (13) is arranged to be sleeved on the outer periphery of the accommodating bottle (4) of the injection device (100), and one end of the first power spring (13) is arranged to be abutted against the accommodating bottle mounting member (3).

7. The actuation mechanism of a spraying device according to any one of claims 1-6, characterized in that the actuation member (12) comprises a guiding structure (122), the connection member (11) being moved along the guiding structure (122) towards the second limit structure (1522) when the first power spring (13) is sprung back.

8. An actuation mechanism of a spraying device according to claim 2, characterized in that it further comprises a second mounting member (15) provided with a hollow (151), said connecting member (11) being located at least partially within said hollow (151).

9. An actuating mechanism of a spraying device according to claim 8, characterized in that the actuating member (12) is at least partly sleeved on the outer periphery of the second mounting member (15); the second mounting piece (15) is provided with an opening (152), and the connecting piece (11) is provided with a protruding part (111);

wherein, when the actuating mechanism (1) is in an initial state, the protruding part (111) passes through the opening (152) and is limited to the first limiting structure (121).

10. The actuating mechanism of an injection device according to claim 9, wherein the second power spring (14) is sleeved on the outer periphery of the second mounting member (15) and one end of the second power spring (14) is connected to the second mounting member (15).

11. The actuation mechanism of a spraying device according to claim 9, characterized in that a side wall of the opening (152) is a bevel, which is used to constitute the unlocking structure (1521);

wherein, when the connecting piece (11) moves to the protruding part (111) to contact with the unlocking structure (1521), the protruding part (111) rotates under the guidance of the unlocking structure (1521) so that the protruding part (111) is separated from the first limiting structure (121).

12. The actuation mechanism of the spraying device according to claim 9, characterized in that the other side wall of the opening (152) is a bevel, which is used to constitute the second limit structure (1522);

during the resetting process of the connecting piece (11), the protruding part (111) rotates under the guidance of the second limiting structure (1522) to be limited by the first limiting structure (121), and the second limiting structure (1522) abuts against the protruding part (111) to prevent the protruding part (111) from being separated from the first limiting structure (121).

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

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

15. A spray device comprising an actuation mechanism of a spray device as claimed in any one of claims 1 to 14.