Injection device

Abstract

The present invention relates to an injection device comprising: a container; the spraying mechanism comprises a liquid conveying component; the actuating mechanism comprises a holding piece and an actuating piece; when the actuating piece rotates, the holding piece drives the infusion component to move in the first direction. The locking mechanism is used for locking the actuating part when the use frequency of the spraying device reaches a preset value and the liquid suction of the liquid conveying part is completed; an unlocking assist mechanism; when the locking mechanism locks the actuating piece, if the container is replaced, a new container is constructed to be capable of pushing the unlocking auxiliary mechanism to move to the unlocking position so as to unlock; if the old container is installed, the old container is constructed to be incapable of pushing the unlocking auxiliary mechanism to move to the unlocking position; in a first liquid suction process after a new container is loaded, the structure of the new container is changed, and the new container becomes an old container. According to the spraying device, the action logic of changing a new container into an old container is improved, the locking safety of the spraying device is improved, and the stability of the spraying device can also be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an injection device. Background Art

[0002] The container of the injection device is a double-layer bottle, and the inner layer is a soft film bag. As the liquid in the container is drawn out, there is no reflux gas in the soft film bag, resulting in a certain tensile force in the soft film bag to resist the extraction of the liquid. As a result, it is easy to cause inaccurate injection metering. Therefore, the injection device usually includes a counting component and a locking component. When the number of uses of the injection device reaches a preset value, the locking component locks the injection device to prevent the user from continuing to use the injection device.

[0003] CN119236237A discloses an injector, including a container, an injection mechanism, an actuating mechanism, a first locking mechanism, and an unlocking assisting mechanism. The first locking mechanism is used to lock the injector in the fully liquid-absorbed state during the normal use of the injector to prevent the user from accidentally triggering injection by rotating the actuating member. The second locking mechanism is used to lock the injector in the fully liquid-absorbed state when the number of uses of the injector reaches a preset value. The unlocking assisting mechanism includes a first pusher, a second pusher, a second assisting member, and a fourth elastic member. The new container serves as the key to unlock the second locking mechanism. During the process of installing the new container, the new container pushes the second pusher to move in the second direction. In this way, the second pusher pushes the first pusher to move in the second direction, and the first pusher pushes the locking component of the second locking mechanism to move in the second direction, so that the locking component releases the locking of the actuating member of the actuating mechanism. Then, during the first injection of the injector after installing the new container, the second pusher presses against the first assisting member of the container in the first direction and presses the first assisting member from the first position to the second position, thereby converting the container into an old container.

[0004] The technical solution of CN119236237A has the following two defects:

[0005] (1) After unlocking the second locking mechanism with a new container, at this time, the injector has completed liquid absorption and has not yet performed the first injection, and the new container has not yet been converted into an old container. The user can remove the newly installed new container and replace it with the original old container to crack the locking of the device, and the security of the device locking needs to be improved.

[0006] (2) In this technical solution, the new container is converted into an old container during the injection process of the injector. However, when the injector is initially used with a new container installed, since the actual liquid in the chamber of the injector is less than the theoretical value, the impact during the first injection process is relatively strong. Therefore, the structural strength requirements for the unlocking assisting mechanism are relatively high, otherwise it will affect the stability of the injector. Summary of the Invention

[0007] Based on the above defects in the prior art, the object of the present invention is to provide an injection device, which improves the action logic of the new container becoming an old container, enhances the safety of locking the injection device, and can also improve the stability of the injection device.

[0008] To this end, the present invention provides the following technical solutions.

[0009] The present invention provides an injection device, which includes:

[0010] A container for containing liquid;

[0011] An injection mechanism including an infusion component;

[0012] An actuating mechanism including a holding member and an actuating member, the holding member being used to hold the infusion component and being movably connected to the actuating member; when the actuating member rotates, the holding member drives the infusion component to move in a first direction so that the infusion component sucks liquid from the container;

[0013] A locking mechanism, when the number of uses of the injection device reaches a preset value and the infusion component has completed sucking liquid, the locking mechanism locks the actuating member, and the holding member can drive the infusion component to move in a second direction under an external force to trigger injection; the first direction and the second direction are opposite;

[0014] An unlocking auxiliary mechanism located on the side of the container facing the holding member;

[0015] Wherein, when the locking mechanism locks the actuating member, if the container is replaced, the new container is configured to be able to push the unlocking auxiliary mechanism to move to the unlocking position to release the locking of the actuating member by the locking mechanism; if the old container is installed, the old container is configured not to be able to push the unlocking auxiliary mechanism to move to the unlocking position;

[0016] During the first liquid suction process after installing a new container, the structure of the new container changes to become an old container.

[0017] Optionally, the injection device further includes a locking mechanism;

[0018] When the number of uses of the injection device has not reached the preset value and the infusion component has completed sucking liquid, the locking mechanism locks the actuating member, and the holding member can drive the infusion component to move in a second direction under an external force to trigger injection.

[0019] Optionally, the unlocking auxiliary mechanism includes a first pushing member and a second pushing member;

[0020] When the locking mechanism locks the actuating member, if the container is replaced, the new container is configured to be able to push the second pusher to move in the second direction, so that the second pusher pushes the first pusher to move in the second direction to the unlocking position; if the old container is installed, the old container is configured not to be able to push the first pusher to the unlocking position through the second pusher.

[0021] Optionally, the spraying device further includes a guide member;

[0022] When the actuating member rotates, the guide member is used to guide the holding member to move in the first direction to trigger liquid suction;

[0023] When the holding member moves in the first direction to the full liquid suction position, the guide member is used to prevent the holding member from moving in the second direction to trigger spraying.

[0024] Optionally, the container is detachably mounted on the holding member;

[0025] During the first liquid suction process after installing a new container, the guide member is further used to guide the second pusher to move in the first direction, and the moving speed of the second pusher is greater than the moving speed of the holding member, so that the second pusher can displace relative to the container in the first direction, and further enable the second pusher to apply a force on the new container in the first direction to turn the new container into an old container.

[0026] Optionally, the spraying device further includes a counting disk, which realizes counting by rotating;

[0027] The locking mechanism includes a locking member, and the locking member moves to switch between an initial position and a locking position;

[0028] When the number of uses of the spraying device does not reach a preset value, the counting disk can prevent the locking member from moving from the initial position to the locking position;

[0029] When the number of uses of the spraying device reaches the preset value, the counting disk does not prevent the locking member from moving from the initial position to the locking position.

[0030] Optionally, the guide member includes a first guiding inclined surface and a third guiding inclined surface, the holding member includes a second guiding inclined surface, the second pusher is provided with a fourth guiding inclined surface and the second pusher can rotate with the holding member;

[0031] When the actuating member rotates to trigger liquid suction, the first guiding inclined surface cooperates with the second guiding inclined surface, so that the holding member can rotate with the actuating member and move relative to the actuating member in the first direction at the same time;

[0032] During the first liquid suction process after a new container is loaded, the third guiding inclined surface cooperates with the fourth guiding inclined surface, so that while the second pushing member rotates along with the holding member, it can move relative to the holding member in a first direction;

[0033] The inclination of the third guiding inclined surface is greater than that of the first guiding inclined surface, so that the moving speed of the second pushing member is greater than that of the holding member.

[0034] Optionally, the second pushing member and the holding member are inserted into each other to limit the rotation of the second pushing member relative to the holding member, and do not limit the movement of the second pushing member in the first direction and the second direction.

[0035] Optionally, the holding member is provided with a plurality of through holes, and adjacent two through holes are separated by limiting ribs; the second pushing member is provided with a limiting groove, and the limiting rib is inserted into the limiting groove in the first direction and has a clearance fit with the limiting groove.

[0036] Optionally, the first guiding inclined surface and the third guiding inclined surface are staggered in the first direction.

[0037] Optionally, a convex block is provided on one side of the guiding member facing the container, and the third guiding inclined surface is provided on the convex block.

[0038] Optionally, the holding member is provided with a through hole; when a new container is installed and the spraying device is not in use, the convex block passes through the through hole so that the third guiding inclined surface abuts against the fourth guiding inclined surface.

[0039] Optionally, the container includes a container body and an auxiliary member, and the auxiliary member is detachably connected to the container body;

[0040] When the container is not enabled, the auxiliary member is in a first position;

[0041] When a new container is loaded, the second pushing member abuts against the auxiliary member in the first direction;

[0042] During the first liquid suction process after a new container is loaded, the second pushing member applies a force in the first direction to the auxiliary member, so that the auxiliary member is disconnected from the container body, and the second pushing member drives the auxiliary member to move to a second position, so that the container becomes an old container.

[0043] Optionally, the container body includes a cover body and a body, and the cover body is installed on the body;

[0044] The auxiliary part is connected to the cover body through a connecting rib. When the force applied to the auxiliary part by the second pushing part is greater than a preset value, the connecting rib is damaged, so that the auxiliary part is disconnected from the container body.

[0045] Optionally, the cover body is in a hollow cylindrical shape and is sleeved on the outer periphery of the body; a cavity is formed between the inner wall of the cover body and one end face of the body facing the auxiliary part;

[0046] When the auxiliary part is in the first position, the auxiliary part is connected to the inner wall of the cover body through a connecting rib;

[0047] When the auxiliary part is in the second position, the auxiliary part is located in the cavity.

[0048] Optionally, the spraying device further includes a triggering part, which is used to trigger the holding part to move in the second direction and unlock the locking mechanism, but cannot unlock the locking mechanism.

[0049] The present invention has the following technical effects:

[0050] The present invention provides a spraying device. The new container becomes an old container during the first liquid suction process after the new container is loaded. During the process of loading the new container, the new container releases the locking of the actuating part by the locking mechanism. After unlocking, during the first liquid suction process, the new container becomes an old container. When the liquid infusion component completes liquid suction, the container has already become an old container. The action logic of the new container becoming an old container is more perfect. Compared with the technical solution of CN119236237A, this solution can further ensure the safety of locking. In addition, in the technical solution of CN119236237A, the new container becomes an old container during the first spraying process after the new container is loaded, while in this solution, the new container becomes an old container during the first liquid suction process after the new container is loaded. The liquid suction process does not have the impact generated by the spraying process, and the stability of the spraying device is better. Description of the Drawings

[0051] Figure 1 It is a structural sectional view of the spraying device when the spraying device is in the initial state of the present invention;

[0052] Figure 2 is Figure 1 the enlarged view at A in

[0053] Figure 3 It is a three-dimensional structural schematic diagram of the guiding part of the present invention Figure 1 ;

[0054] Figure 4 It is a three-dimensional structural schematic diagram of the guiding part of the present invention Figure 2 ;

[0055] Figure 5 Schematic perspective view of the holding member of the present invention Figure 1 ;

[0056] Figure 6 Schematic perspective view of the holding member of the present invention Figure 2 ;

[0057] Figure 7 Schematic perspective view of the second pushing member of the present invention;

[0058] Figure 8 Exploded view of the assembly structure of the locking mechanism, balance mechanism, guiding member, container, first pushing member and second pushing member of the present invention;

[0059] Figure 9 Top view of the assembly structure of the cover body and the auxiliary member of the present invention;

[0060] Figure 10 Schematic perspective view of the assembly structure of the cover body and the auxiliary member of the present invention;

[0061] Figure 11 Schematic perspective sectional view of the partial structure of the injection device of the present invention Figure 1 ;

[0062] Figure 12 Schematic perspective sectional view of the partial structure of the injection device of the present invention Figure 2 ;

[0063] Figure 13 Exploded schematic perspective sectional view of the partial structure of the injection device of the present invention;

[0064] Figure 14 Schematic perspective view of the actuating member of the present invention;

[0065] Figure 15 Schematic perspective view of the first outer shell of the present invention.

[0066] Explanation of reference numerals

[0067] 100, injection device;

[0068] 1, container; 11, container body; 111, cover body; 112, body; 12, auxiliary member; 13, connecting rib; 14, cavity; 15, gap;

[0069] 2, injection mechanism; 21, infusion component; 22, injection main body; 221, nozzle; 222, pressure chamber; 223, pump body;

[0070] 3. Actuating mechanism; 31. Retaining member; 311. Second guiding inclined surface; 312. Second abutting surface; 313. Limiting rib; 314. Claw; 315. Through hole; 316. Groove; 317. Guide groove; 32. Actuating member; 321. First locking groove; 322. Second locking groove; 323. Outer convex structure; 324. Guide projection; 325. Abutting surface; 326. Elastic arm; 3261. Ratchet structure; 3262. Abutting projection; 327. Second limiting groove; 328. Protrusion structure; 33. Fourth elastic member;

[0071] 41. Locking mechanism; 411. Locking component; 4111. First abutting portion; 4112. First clamping rib; 412. First elastic member;

[0072] 42. Locking mechanism; 421. Locking component; 4211. Second ratchet structure; 4212. Second clamping rib; 422. Second elastic member;

[0073] 51. Triggering member; 511. Triggering portion;

[0074] 52. Guiding member; 521. First guiding inclined surface; 522. First abutting surface; 523. Extending projection; 524. First limiting groove; 525. Bump; 5251. Third guiding inclined surface;

[0075] 6. Counting disk; 61. Blocking structure; 62. Notch; 63. Fourth ratchet structure;

[0076] 7. Balancing mechanism; 71. Balancing element; 711. Third ratchet structure; 72. Third elastic member;

[0077] 8. Unlocking assisting mechanism; 81. First pushing member; 811. Pushed portion; 812. Unlocking portion; 813. Connecting portion; 82. Second pushing member; 821. Base; 8211. Supporting rib; 82111. Fourth guiding inclined surface; 822. Extending rib; 8221. Pushing portion; 823. Limiting groove;

[0078] 91. First housing; 911. First mounting post; 912. First limiting rib; 913. Ring-shaped protrusion; 9131. Concave portion; 914. Mounting opening;

[0079] 92. Second housing. Detailed implementation manners

[0080] To make the technical solutions and beneficial effects of the present invention more obvious and understandable, the following provides a detailed description by listing specific embodiments. Unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical and scientific fields to which this application belongs.

[0081] In the description of the present invention, unless otherwise clearly defined, the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of simplifying the description of the present invention, rather than indicating that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, that is, it cannot be understood as a limitation to the present invention.

[0082] In the present invention, the terms "first" and "second" are only used for the purpose of clear description and cannot be understood as the relative importance of the indicated features or the number of the indicated technical features. Therefore, the features defined with "first" and "second" may clearly include at least one such feature. In the description of the present invention, the meaning of "a plurality" is at least two; the meaning of "several" is at least one; unless otherwise clearly defined.

[0083] In the present invention, unless otherwise clearly defined, terms such as "installation", "connection", "coupling", "fixing", "setting", etc. shall be understood in a broad sense. 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 directly connected or indirectly connected through an intermediate medium, and can also be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0084] In the present invention, unless otherwise clearly defined, the first feature being "on", "above", "over" and "upon" the second feature, or "under", "beneath", "below" or "underneath" the second feature can be that the first feature is in direct contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "upon" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than the horizontal height of the second feature. The first feature being "under", "beneath", "below" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0085] The "upper" and "lower" mentioned in the present invention are both based on Figure 1 the markings in

[0086] Next, according to Figures 1 to 15 the injection device of the present invention will be described in detail.

[0087] In the present embodiment, asFigure 1 , Figure 2 and Figure 8 As shown in Figure 1 , Figure 2 and Figure 8 , the spraying device 100 includes a container 1, a spraying mechanism 2, an actuating mechanism 3, a locking mechanism 42 and an unlocking assisting mechanism 8. The container 1 is used to hold a liquid. The container 1 is a double-layer bottle, with an inner soft film bag. The liquid is contained in the soft film bag. The unlocking assisting mechanism 8 is located on the side of the container 1 facing the holding member 31. The spraying mechanism 2 includes an infusion component 21 and a spraying main body 22. The spraying main body 22 includes a nozzle 221, a pressure chamber 222 and a pump body 223. One end of the infusion component 21 is inserted into the container 1, and the other end is movably inserted into the pump body 223 of the spraying main body 22. The actuating mechanism 3 includes a holding member 31 and an actuating member 32. The holding member 31 is used to hold the infusion component 21, and the holding member 31 is movably connected to the actuating member 32. When the actuating member 32 rotates, the holding member 31 drives the infusion component 21 to move in a first direction, so that the infusion component 21 sucks the liquid from the container 1 and transports it to the pressure chamber 222 of the spraying main body 22 for temporary storage. When the infusion component 21 moves in a second direction, the liquid in the pressure chamber 222 is ejected through the nozzle 221. The first direction and the second direction are opposite.

[0088] When the number of uses of the spraying device 100 reaches a preset value, the soft film bag of the container 1 has a certain tensile force to resist the extraction of the liquid. If the current container 1 is continued to be used, the spraying measurement will be inaccurate. In this solution, a locking mechanism 42 is configured. When the number of uses of the spraying device 100 reaches the preset value and the infusion component 21 has completed sucking the liquid, the locking mechanism 42 locks the actuating member 32, and the user cannot continue to rotate the actuating member 32. Moreover, the holding member 31 can drive the infusion component 21 to move in the second direction under an external force to trigger spraying, completing the last use within the limited number of uses of the old container 1. When the last spraying corresponding to the container 1 is completed, since the user cannot continue to rotate the actuating member 32, the infusion component 21 cannot perform the next liquid suction operation, thereby restricting the further use of the spraying device 100.

[0089] When the locking mechanism 42 locks the actuating member 32, if the container 1 is replaced, the new container 1 is configured to be able to push the unlocking assisting mechanism 8 to move to the unlocking position to release the locking of the actuating member 32 by the locking mechanism 42. In this way, the spraying device 100 can be further used. If the old container 1 is installed, the old container 1 is configured not to be able to push the unlocking assisting mechanism 8 to move to the unlocking position. In this way, the spraying device 100 still cannot be further used. In this solution, the new container 1 is used as the unlocking key, and the user must install the new container 1 to continue using the spraying device 100.

[0090] Moreover, during the first liquid suction process after the new container 1 is loaded, the structure of the new container 1 changes to become the old container 1. In this solution, the new container 1 and the old container 1 have structural differences to ensure that only the new container 1 can serve as the key to unlock the unlocking mechanism 42. And this structural difference occurs during the first liquid suction process after the new container 1 is loaded, that is, during the loading process of the new container 1, the new container 1 unlocks the locking of the actuating member 32 by the unlocking mechanism 42. After unlocking, during the first liquid suction process, the new container 1 becomes the old container 1. When the liquid infusion component 21 finishes liquid suction, the container 1 has already become the old container, and the user does not need to remove the current old container 1 and replace it with the previous old container 1. The action logic of the new container 1 becoming the old container 1 is more perfect. That is, compared with the technical solution of CN119236237A, this solution can further increase the cracking difficulty of the locking mechanism of the injection device and ensure the security of locking. In addition, in the technical solution of CN119236237A, the new container 1 becomes the old container 1 during the first injection process after the new container 1 is loaded, while in this solution, the new container 1 becomes the old container 1 during the first liquid suction process after the new container 1 is loaded. The liquid suction process does not have the impact generated by the injection process, and the stability of the injection device 100 is better.

[0091] In one embodiment, as Figure 1 shown, the direction in which the holding member 31 moves downward is the first direction, and the direction in which it moves upward is the second direction. Of course, the movement direction of the holding member 31 is not limited to this, and it can also move in other directions such as the front-back direction or the left-right direction.

[0092] In one embodiment, as Figure 11 shown, the injection device 100 further includes a locking mechanism 41. When the number of uses of the injection device 100 has not reached the preset value and the liquid infusion component 21 finishes liquid suction, the locking mechanism 41 locks the actuating member 32, that is, locks the actuating member 32 every time liquid suction is completed to prevent the user from accidentally triggering injection by rotating the actuating member 32. And the holding member 31 can drive the liquid infusion component 21 to move along the second direction under an external force so that the liquid in the pressure chamber 222 is ejected through the nozzle 221 to trigger injection.

[0093] In one embodiment, as Figure 1 and Figure 2As shown, the unlocking assisting mechanism 8 includes a first pushing member 81 and a second pushing member 82. When the locking mechanism 42 locks the actuating member 32, if the container 1 is replaced, during the process of loading a new container 1, the moving new container 1 can push the second pushing member 82 to move in the second direction, so that the second pushing member 82 pushes the first pushing member 81 to move in the second direction to the unlocking position. The first pushing member 81 at the unlocking position can release the locking of the actuating member 32 by the locking mechanism 42, achieving unlocking. If the old container 1 is loaded, the moving old container 1 cannot push the first pushing member 81 to the unlocking position by pushing the second pushing member 82, and thus cannot release the locking of the actuating member 32 by the locking mechanism 42, so as to ensure that the user cannot continue to use the old container 1 when the number of uses of the spraying device 100 reaches the preset value. Among them, as Figure 2 and Figure 8 shown, the first pushing member 81 and the second pushing member 82 are two independent components, which is convenient for assembling the unlocking assisting mechanism 8 in the limited space inside the spraying device 100. Of course, the first pushing member 81 and the second pushing member 82 can also be integrated on one component to reduce the number of components. Preferably, in this solution, the first pushing member 81 and the second pushing member 82 are two independent components.

[0094] Furthermore, as Figure 1 shown, the spraying device 100 further includes a guiding member 52. When the actuating member 32 rotates, the guiding member 52 is used to guide the holding member 31 to move in the first direction to trigger liquid suction. When the holding member 31 moves in the first direction to the full liquid suction position, the guiding member 52 is used to prevent the holding member 31 from moving in the second direction to trigger spraying. At the same time, the locking mechanism 41 locks the actuating member 32 to prevent the user from rotating the actuating member 32, so that the actuating member 32 drives the holding member 31 to rotate, resulting in the holding member 31 breaking away from the blocking of the guiding member 52 and accidentally triggering spraying.

[0095] Furthermore, the container 1 is detachably mounted on the holding member 31. In this way, when the holding member 31 moves in the first direction or the second direction, the container 1 will move together with the holding member 31. Specifically, as Figure 1 and Figure 6As shown, the holding member 31 holds the container 1 by means of the pawls 314. During the first liquid suction after a new container 1 is loaded, the guiding member 52 is further used to guide the second pushing member 82 to move in the first direction, and the moving speed of the second pushing member 82 is greater than that of the holding member 31, so that the second pushing member 82 can be displaced relative to the container 1 in the first direction, and further, the second pushing member 82 can apply a force to the new container 1 in the first direction to change the new container 1 into an old container 1. In addition, in this solution, during the liquid suction process of the infusion member 21, by the force applied by the second pushing member 82 of the unlocking auxiliary mechanism 8, the new container 1 is changed into an old container 1. Since there is no impact generated by the jetting process during the liquid suction process, the requirement for the structural strength of the unlocking auxiliary mechanism 8 can be reduced.

[0096] Further, as Figure 2 and Figure 11 shown, the jetting device 100 further includes a counting disk 6. The counting disk 6 is provided with numbers, and the counting disk 6 rotates to achieve counting. As Figure 2 and Figure 11 shown, the locking mechanism 42 includes a locking member 421. The locking member 421 moves to switch between the initial position and the locking position.

[0097] When the number of uses of the jetting device 100 has not reached the preset value, the counting disk 6 can prevent the locking member 421 from moving from the initial position to the locking position. That is, during the use of the jetting device 100, the counting disk 6 can keep the locking member 421 in the initial position to avoid the locking member 421 restricting the use of the jetting device 100. When the number of uses of the jetting device 100 reaches the preset value, the counting disk 6 does not prevent the locking member 421 from moving from the initial position to the locking position. In this way, when the infusion member 21 completes the last liquid extraction from the current container 1 within the limited number of uses, the locking member 421 can move to the locking position to lock the actuating member 32. After the jetting device 100 completes the jetting corresponding to the current container 1, the current old container 1 is removed, a new container 1 is replaced, the locking of the actuating member 32 by the locking member 421 is released, and then, after the first liquid suction after the new container 1 is replaced, the jetting device 100 starts a new round of use. Since the number of uses in the new round has not reached the preset value, the counting disk 6 can prevent the locking member 421 from moving to the locking position again. In this way, when the second pushing member 82 moves in the first direction to change the new container 1 into an old container 1, the locking member 421 will not move to the locking position due to the separation of the unlocking auxiliary mechanism 8, so as to ensure that the locking mechanism 42 does not interfere with the jetting device 100 during the new round of use.

[0098] In one embodiment, as Figure 1 and Figure 2As shown, the actuator 32 is sleeved on the outer periphery of the holder 31, such as Figure 5 and Figure 6 As shown, a guiding groove 317 is provided on the outer periphery of the holder 31, and the guiding groove 317 extends along a first direction, such as Figure 12 and Figure 14 As shown, a guiding protrusion 324 is provided on the inner wall of the actuator 32, and the guiding protrusion 324 is movably inserted into the guiding groove 317. In this way, when the actuator 32 rotates, the actuator 32 can drive the holder 31 to rotate together.

[0099] In one embodiment, such as Figures 3 to 5 、 Figure 7 and Figure 8 As shown, the guiding member 52 includes a first guiding inclined surface 521 and a third guiding inclined surface 5251, the holder 31 includes a second guiding inclined surface 311, the second pushing member 82 is provided with a fourth guiding inclined surface 82111, and the second pushing member 82 can rotate along with the holder 31.

[0100] When the actuator 32 rotates to trigger liquid suction, the actuator 32 drives the holder 31 to rotate together. At the same time, the first guiding inclined surface 521 cooperates with the second guiding inclined surface 311, so that the second guiding inclined surface 311 slides along the first guiding inclined surface 521, and further enables the holder 31 to move in the first direction relative to the actuator 32 while rotating along with the actuator 32. At this time, the guiding groove 317 is displaced relative to the guiding protrusion 324.

[0101] During the first liquid suction process after a new container 1 is loaded, the actuator 32 drives the holder 31 to rotate, the first guiding inclined surface 521 cooperates with the second guiding inclined surface 311 to guide the holder 31 to move in the first direction. At the same time, the holder 31 drives the second pushing member 82 to rotate, the third guiding inclined surface 5251 cooperates with the fourth guiding inclined surface 82111, so that the fourth guiding inclined surface 82111 slides along the third guiding inclined surface 5251, and further enables the second pushing member 82 to move in the first direction relative to the holder 31 while rotating along with the holder 31. Among them, by defining that the inclination of the third guiding inclined surface 5251 is greater than that of the first guiding inclined surface 521, so that the moving speed of the second pushing member 82 is greater than that of the holder 31, and further enabling the second pushing member 82 to move in the first direction relative to the holder 31. Finally, the second pushing member 82 applies a force to the newly loaded container 1 in the first direction, and turns the new container 1 into an old container 1.

[0102] In addition, such as Figures 3 to 5As shown, the guide member 52 includes a first abutting surface 522, and the holding member 31 includes a second abutting surface 312. When the actuating member 32 rotates to trigger liquid absorption, when the holding member 31 moves in the first direction to the fully liquid-absorbed position, the first abutting surface 522 abuts against the second abutting surface 312 in the first direction to prevent the holding member 31 from moving in the second direction to trigger spraying. At the same time, the locking mechanism 41 locks the actuating member 32.

[0103] Further, the second pusher 82 and the holding member 31 are inserted into each other to limit the relative rotation of the second pusher 82 with respect to the holding member 31. In this way, when the holding member 31 rotates, the second pusher 82 can rotate together with the holding member 31. Moreover, the relationship of the second pusher 82 and the holding member 31 being inserted into each other does not limit the movement of the second pusher 82 in the first direction and the second direction. In this way, the new container 1 can move the second pusher 82 and the first pusher 81 in the second direction to release the locking of the locking mechanism 42 on the actuating member 32, and the second pusher 82 can move in the first direction to turn the new container 1 into the old container 1.

[0104] Further, as Figures 5 to 7 shown, the holding member 31 is provided with two through holes 315, and the two through holes 315 are separated by a limiting rib 313; the second pusher 82 is provided with a limiting groove 823, and the limiting rib 313 is inserted into the limiting groove 823 in the first direction and has a clearance fit therewith. In this way, the second pusher 82 can rotate together with the holding member 31, and it does not limit the movement of the second pusher 82 in the first direction and the second direction either. Of course, the number of the through holes 315 is not limited to two, and can also be three, four or even more, and the adjacent two through holes 315 are separated by the limiting rib 313.

[0105] In an embodiment, as Figure 3 and Figure 4 shown, the first guiding inclined surface 521 and the third guiding inclined surface 5251 are staggeredly distributed in the first direction to avoid interference between the cooperation relationships of the holding member 31 and the second pusher 82 with the guide member 52 respectively.

[0106] In an embodiment, as Figure 3 and Figure 4 shown, a convex block 525 is provided on the side of the guide member 52 facing the container 1, and the third guiding inclined surface 5251 is provided on the convex block 525, with a simple structure and convenient for processing.

[0107] Further, as Figures 3 to 5 、 Figure 8As shown, when the new container 1 is installed and the spraying device 100 is not in use, the bump 525 passes through the through hole 315 of the holder 31, so that the third guiding inclined surface 5251 abuts against the fourth guiding inclined surface 82111. When the second pusher 82 moves in the second direction, the through hole 315 is also used to make way for the displacement of the second pusher 82.

[0108] In one embodiment, as Figure 2 , Figure 7 and Figure 8 shown, the second pusher 82 further includes a connected base 821 and two extending ribs 822. The extending ribs 822 are provided with pushing portions 8221. The first pusher 81 is provided with a pushed portion 811, an unlocking portion 812 and a connecting portion 813. The pushed portion 811 and the unlocking portion 812 are respectively connected to the connecting portion 813. The pushing portion 8221 of one of the extending ribs 822 is opposite to the pushed portion 811 provided on the first pusher 81 in the second direction. As Figure 2 and Figure 6 shown, the outer wall of the holder 31 is provided with a groove 316 extending in the second direction. The pushing portion 8221 and the pushed portion 811 are arranged in the groove 316 in sequence in the second direction. The groove 316 is used to limit the rotation of the first pusher 81 and the second pusher 82. As Figure 2 and Figure 14 shown, the actuator 32 is provided with a second limiting groove 327. The unlocking portion 812 is at least partially located in the second limiting groove 327. When a new container 1 is loaded, the end face of the base 821 facing the container 1 abuts against the auxiliary member 12 of the container 1. The auxiliary member 12 pushes the second pusher 82 to move in the second direction. The pushing portion 8221 pushes the pushed portion 811, and the unlocking portion 812 pushes the locking member 421 upward, so that the locking member 421 releases the locking of the actuator 32.

[0109] Furthermore, as Figure 7 shown, the base 821 is provided with two supporting ribs 8211. The two supporting ribs 8211 are relatively spaced apart and a limiting groove 823 is formed between them. A fourth guiding inclined surface 82111 is formed on one side of the supporting rib 8211. The guiding member 51 is provided with two bumps 525. The bumps 525 are arranged in one-to-one correspondence with the supporting ribs 8211, so that one fourth guiding inclined surface 82111 is in one-to-one cooperation with the third guiding inclined surface 5251 of one bump 525.

[0110] In one embodiment, as Figure 1 described, the container 1 includes a container body 11 and an auxiliary member 12. The auxiliary member 12 is detachably connected to the container body 11. As Figure 1As shown, when the container 1 is not enabled, the auxiliary member 12 is in the first position, and at this time, the container 1 is new. When a new container 1 is loaded, the second pusher 82 abuts against the auxiliary member 12 in the first direction. During the first liquid suction process after loading the new container 1, the actuator 32 drives the holder 31 to rotate, the holder 31 drives the second pusher 82 to rotate, the third guiding inclined surface 5251 cooperates with the fourth guiding inclined surface 82111, so that the fourth guiding inclined surface 82111 slides along the third guiding inclined surface 5251, and further enables the second pusher 82 to move relative to the holder 31 in the first direction while rotating with the holder 31. The second pusher 82 applies a force in the first direction to the auxiliary member 12, so that the auxiliary member 12 is disconnected from the container body 11, and the second pusher 82 drives the auxiliary member 12 to move to the second position (not shown in the figure), so that the container 1 becomes an old container 1. Through the position change of the auxiliary member 12 in the first direction, a structural difference between the new container 1 and the old container 1 is formed. It should be understood that if the old container 1 is reloaded, the auxiliary member 12 in the second position cannot contact the second pusher 82, or the auxiliary member 12 in the second position can contact the second pusher 82 but the distance it pushes the second pusher 82 upward is not enough to move the first pusher 81 to unlock the locking mechanism 42.

[0111] Further, as Figures 8 to 10 shown, the container body 11 includes a cover 111 and a body 112, the cover 111 is installed on the body 112, and the auxiliary member 12 is connected to the cover 111 through a connecting rib 13. When the force applied by the second pusher 82 to the auxiliary member 12 in the first direction is greater than a preset value, the connecting rib 13 is damaged, so that the auxiliary member 12 is disconnected from the container body 11, and after the connecting rib 13 is damaged, it cannot be repaired, and the user cannot adjust the position of the auxiliary member 12 of the old container 1 by himself to forcibly use the old container 1. In addition, since the auxiliary member 12 needs to push the second pusher 82 in the second direction during the process of unlocking the locking mechanism 42 by loading a new container 1, the force required to damage the connecting rib 13 needs to be greater than the force required to unlock the locking mechanism 42 through the second pusher 82 and the first pusher 81, so as to avoid the connecting rib 13 being damaged during the process of unlocking the locking mechanism 42 by the new container 1, resulting in unlocking failure. And since the container 1 is detachably installed on the holder 31, the force required to damage the connecting rib 13 also needs to be less than the force required for the container 1 and the holder 31 to be disconnected from each other, so as to avoid the container 1 and the holder 31 being disconnected from each other during the process of damaging the connecting rib 13 by the second pusher 82, which affects the use of the spraying device 100.

[0112] Of course, the connection manner between the auxiliary member 12 and the cover 111 is not limited to the connecting rib, and it can also be a snap connection, a magnetic adsorption connection and other connection manners that can be disconnected under a certain external force.

[0113] Further, as Figure 1 and Figure 10 shown, the cover body 111 is in a hollow cylindrical shape, and the cover body 111 is sleeved on the outer periphery of the body 112. A cavity 14 is formed between the inner wall of the cover body 111 and one end face of the body 112 facing the auxiliary member 12. As Figure 10 shown, when the auxiliary member 12 is in the first position, the auxiliary member 12 is connected to the inner wall of the cover body 111 through the connecting rib 13, and there is a gap 15 between the outer peripheral surface of the auxiliary member 12 and the inner wall of the cover body 111. The setting of the gap 15 can reduce the force required for the auxiliary member 12 and the cover body 111 to be disconnected. As Figure 1 shown, when the connecting rib 13 is damaged, the auxiliary member 12 falls into the cavity 14 under its own gravity or moves into the cavity 14 under the extrusion of the auxiliary member 12. At this time, the auxiliary member 12 is in the second position.

[0114] In an embodiment, as Figure 11 shown, the spraying device 100 further includes a trigger member 51. The trigger member 51 is used to trigger the holding member 31 to move in the second direction and unlock the locking mechanism 41, but cannot unlock the locking mechanism 42. Specifically, the trigger member 51 can be a button structure or other mechanical switch structures such as a trigger structure. The trigger member 51 serves as the unlocking trigger member of the locking mechanism 41. The triggering of liquid suction and spraying are respectively two actions of operating the actuating member 32 and operating the trigger member 51, which is more convenient to use.

[0115] The spraying device 100 of this solution is an improvement based on the technical solution of CN119236237A. The structures related to the liquid suction action, spraying action, structure of the locking mechanism 42, structure of the locking mechanism 41, etc. of the spraying device 100 are substantially the same as those in CN119236237A. This solution will be elaborated again below for details.

[0116] In an embodiment, as Figure 1 , Figure 2 , Figure 11 and Figure 12As shown, the spraying device 100 further includes a first housing 91 and a second housing 92 that are detachably connected. The second housing 92 is rotatable relative to the first housing 91. The interior of the first housing 91 is provided with a hollow first mounting post 911. The pump body 223 is installed in the first mounting post 911, and the nozzle 221 is located at the upper part of the first mounting post 911. One end of the actuating member 32 extends into the first housing 91. The actuating member 32 is rotatably connected to the first housing 91 through a raised structure 328 provided on its outer wall. The other end of the actuating member 32 extends into the second housing 92 and is detachably connected to the second housing 92. The bottom of the container 1 extends into the second housing 92. When using the spraying device 100, the user rotates the second housing 92 to drive the actuating member 32 to rotate. When the container 1 needs to be replaced, the container 1 can be detached after removing the second housing 92.

[0117] In one embodiment, the actuating member 32 cannot be detached from the first housing 91. As Figure 1 shown, the locking mechanism 42 is isolated within the first housing 91 by the actuating member 32. In this way, the user cannot forcibly unlock the locking mechanism 42 with other tools.

[0118] In one embodiment, as Figure 1 shown, the actuating mechanism 3 includes a fourth elastic member 33. The fourth elastic member 33 is sleeved on the outer periphery of the container 1. One end of the fourth elastic member 33 abuts against the holding member 31, and the other end is restricted from moving in the first direction. When the second housing 92 is rotated to trigger liquid suction, when the holding member 31 drives the liquid infusion component 21 to move in the first direction, the fourth elastic member 33 is compressed; when the user presses the trigger member 51, the first abutting surface 522 leaves the second abutting surface 312, and the fourth elastic member 33 rebounds to push the holding member 31 to drive the liquid infusion component 21 to move in the second direction, thereby triggering spraying.

[0119] In one embodiment, as Figure 11 and Figure 12 shown, the trigger member 51 is movably installed in the mounting opening 914 of the first housing 91. The trigger member 51 is provided with a trigger portion 511. The guiding member 52 is provided with an extending protrusion 523. When the liquid infusion component 21 finishes liquid suction, the user presses the trigger member 51, and the trigger portion 511 pushes the extending protrusion 523, causing the guiding member 52 to rotate by a certain angle. As a result, the first abutting surface 522 leaves the second abutting surface 312 due to the rotation. As Figure 3 and Figure 15 shown, the guiding member 52 is provided with a first limiting groove 524, and the first housing 91 is provided with a first limiting rib 912. The groove width of the first limiting groove 524 is greater than the width of the first limiting rib 912. The first limiting rib 912 extends into the first limiting groove 524. Through the cooperation of the first limiting groove 524 and the first limiting rib 912, the rotatable angle of the guiding member 52 is restricted. When the actuating member 32 is rotated again to trigger liquid suction, asFigure 3 and Figure 5 As shown in Figure 5 , the second guiding inclined surface 311 of the holding member 31 applies a driving force to the first guiding inclined surface 521 of the guiding member 52, and the holding member 31 and the guiding member 52 rotate synchronously. At this time, the guiding member 52 rotates to push the triggering member 51 to reset. Moreover, since the holding member 31 and the guiding member 52 rotate synchronously, the holding member 31 only rotates and does not move relative to the actuating member 32. When the guiding member 52 is reset to the position where it is restricted by the first limiting rib 912 and cannot rotate further, the holding member 31 rotates and moves to trigger liquid suction.

[0120] In an embodiment, as Figure 11 shown, the locking mechanism 41 includes a locking member 411 and a first elastic member 412. The locking member 411 includes a first abutting portion 4111. When the injection device 100 is in the initial state, under the elastic force of the first elastic member 412, the first abutting portion 4111 abuts against the holding member 31 along the first direction and is stationary. When the holding member 31 moves along the first direction, since the holding member 31 moves in the direction away from the first abutting portion 4111, therefore, under the elastic force of the first elastic member 412, the locking member 411 synchronously moves along the first direction. And, during the process that the locking member 411 synchronously moves along the first direction, the first abutting portion 4111 is always in the state of abutting against the holding member 31. When the liquid infusion member 21 finishes liquid suction, the locking member 411 moves to the locking position and locks the actuating member 32. When triggering injection, during the process that the holding member 31 moves along the second direction, the holding member 31 can push the first abutting portion 4111 along the second direction, so that the locking member 411 moves away from the locking position to release the locking.

[0121] In an embodiment, as Figure 11 、 Figure 12 and Figure 14 shown, the actuating member 32 includes a first locking groove 321. When the locking member 411 moves along the first direction together with the holding member 31 until the locking member 411 abuts against the abutting surface 325 of the actuating member 32, the locking member 411 stops moving along the first direction, and the actuating member 32 continues to rotate, so that the holding member 31 continues to drive the liquid infusion member 21 to move along the first direction until the liquid infusion member 21 finishes liquid suction. At the same time, the actuating member 32 rotates until the first locking groove 321 is located below the locking member 411. Under the elastic force of the first elastic member 412, the locking member 411 moves along the first direction until the first clamping rib 4112 of the locking member 411 is clamped in the first locking groove 321, thereby locking the actuating member 32.

[0122] Furthermore, as Figure 11 and Figure 14 shown, the first locking groove 321 is arranged at one end of the actuating member 32 facing the injection main body 22, and the end face of this end constitutes the abutting surface 325.

[0123] In one embodiment, as Figure 2 , Figure 8 , Figure 11 and Figure 13 shown, the locking mechanism 42 includes a locking member 421 and a second elastic member 422, and the counting disk 6 includes a blocking structure 61. When the number of uses does not reach the preset value, under the elastic force of the second elastic member 422, the locking member 421 abuts against the blocking structure 61 in the first direction, and the blocking structure 61 prevents the locking member 421 from moving to the locking position. When the number of uses reaches the preset value, the blocking structure 61 gives way, and under the elastic force of the second elastic member 422, the locking member 421 moves to the locking position in the first direction to lock the actuating member 32.

[0124] Further, as Figure 2 shown, the projections of the locking member 421 and the holding member 31 in the second direction do not overlap. In this way, when the locking mechanism 42 locks the actuating member 32, by pressing the triggering member 51, the holding member 31 can drive the infusion member 21 to move in the second direction to trigger injection, and since the holding member 31 does not contact the locking member 421 during the movement in the second direction, the movement of the holding member 31 cannot release the locking of the locking mechanism 42.

[0125] In one embodiment, as Figure 11 and Figure 14 shown, the actuating member 32 is provided with a second locking groove 322, and the first locking groove 321 and the second locking groove 322 are spaced apart circumferentially along the actuating member 32. When the number of uses does not reach the preset value, due to the limitation of the blocking structure 61 on the locking member 421, the locking member 421 does not contact the second locking groove 322, and during the rotation of the actuating member 32, the locking member 421 also does not contact the first locking groove 321. When the number of uses reaches the preset value, due to the blocking structure 61 giving way, the locking member 421 moves in the first direction under the elastic force of the second elastic member 422 until the second latching rib 4212 of the locking member 421 is latched in the second locking groove 322 to achieve locking.

[0126] Further, as Figure 14As shown, the first locking groove 321 and the second locking groove 322 are both provided at one end of the actuating member 32, and the position heights of the first locking groove 321 and the second locking groove 322 are the same, that is, the upper surfaces of the first locking groove 321 and the second locking groove 322 are flush, which is convenient for processing. Since the first locking groove 321 and the second locking groove 322 are spaced apart along the circumferential direction of the actuating member 32, when the number of uses does not reach the preset value and liquid suction is triggered, the locking member 411 moves in the first direction to abut against the abutting surface 325 of the actuating member 32. By defining the groove shape difference or size difference between the first locking groove 321 and the second locking groove 322, interference of the second locking groove 322 on the locking member 411 during the continuous rotation of the actuating member 32 can be avoided.

[0127] Further, as Figure 14 shown, in order to improve the locking stability, the number of the first locking grooves 321 is three, the number of the second locking grooves 322 is three, the locking member 411 includes three first engaging ribs 4112 arranged in one-to-one correspondence with the three first locking grooves 321, and the locking member 421 includes three second engaging ribs 4212 arranged in one-to-one correspondence with the three second locking grooves 322. Among the three first locking grooves 321, the length of the middle first locking groove 321 is smaller than the lengths of the first locking grooves 321 on its two sides. Among the three second locking grooves 322, the width of the middle second locking groove 322 is smaller than the widths of the second locking grooves 322 on its two sides.

[0128] In an embodiment, as Figures 11 to 14 shown, the actuating member 32 is provided with two groups of first locking grooves 321, each group having three first locking grooves 321. The two groups of first locking grooves 321 are distributed along the radial direction of the actuating member 32. The second locking groove 322 is located in the middle of the two groups of first locking grooves 321 and the three groups of locking grooves are equally spaced. The locking mechanism 41 and the locking mechanism 42 are arranged at an interval of 45° along the circumferential direction of the actuating member 32. In this way, when the number of uses does not reach the preset value, the user rotates the second housing 92 half a turn, that is, when the second housing 92 drives the actuating member 32 to rotate half a turn, the locking member 411 is clamped in one of the groups of first locking grooves 321, and the liquid infusion member 21 completes liquid suction. Then, the user presses the trigger member 51 to trigger injection. When triggering injection next time, the second housing 92 is rotated half a turn again, and the locking member 411 is clamped in the other group of first locking grooves 321. When the number of uses reaches the preset value, that is, when the user triggers liquid suction for the last time, when the second housing 92 is rotated half a turn, the locking member 411 is clamped in one of the groups of first locking grooves 321, and the locking member 421 is clamped in the second locking groove 322. By pressing the trigger member 51, the locking mechanism 41 can be unlocked.

[0129] In an embodiment, as Figure 11As shown, the locking mechanism 41 and the locking mechanism 42 are both located above the counting disk 6. The upper end surface of the counting disk 6 is provided with a first ratchet structure and a notch 62. The first ratchet structure and the notch 62 are distributed along the circumference of the counting disk 6. The locking member 421 is provided with a second ratchet structure 4211. When the number of uses does not reach the preset value, under the elastic force of the second elastic member 422, the second ratchet structure 4211 meshes with the first ratchet structure so that the counting disk 6 rotates unidirectionally. Among them, the first ratchet structure forms a blocking structure 61. When the number of uses reaches the preset value, the counting disk 6 rotates until the notch 62 and the second ratchet structure 4211 are relatively positioned in the first direction. The notch 62 is used to allow the locking member 421 to move to the second locking position.

[0130] Further, as Figure 1 、 Figure 8 and Figure 12 shown, the spraying device 100 further includes a balancing mechanism 7. The balancing mechanism 7 includes a balancing element 71 and a third elastic member 72. The balancing element 71 is provided with a third ratchet structure 711. Under the elastic force of the third elastic member 72, the third ratchet structure 711 meshes with the first ratchet structure, and the counting disk 6 can only rotate unidirectionally under the action of the ratchets of the balancing element 71 and the locking member 421. Among them, the dimension of the third ratchet structure 711 in the circumferential direction of the counting disk 6 is greater than the width of the notch 62. In this way, when the counting disk 6 rotates until the notch 62 is located below the third ratchet structure 711, the third ratchet structure 711 of the balancing element 71 will not fall into the notch 62, avoiding interference with the normal rotation of the counting disk 6. The balancing element 71 does not have a locking rib that can be engaged with the first locking groove 321 and the second locking groove 322, and the balancing element 71 does not have a locking function.

[0131] Further, as Figure 1 、 Figures 11 to 13 shown, the counting disk 6 is sleeved on the outer periphery of the actuating member 32. The locking mechanism 42 and the balancing mechanism 7 are distributed on the radial two sides of the actuating member 32. In this way, the locking member 421 and the balancing element 71 can respectively press against the two radial sides of the upper end surface of the counting disk 6, which is beneficial to the stable rotation of the counting disk 6.

[0132] In an embodiment, the locking member 411, the locking member 421 and the balancing element 71 are respectively movably limited in the first housing 91, and the first housing 91 restricts the locking member 411, the locking member 421 and the balancing element 71 from rotating.

[0133] In an embodiment, as Figure 11 and Figure 14As shown, the actuator 32 is provided with a convex structure 323. The convex structure 323 is located on the abutting surface 325. The height by which the convex structure 323 protrudes from the abutting surface 325 is approximately 0.5 mm. The convex structure 323 and the second locking groove 322 are sequentially distributed along the rotation direction of the actuator 32. When the locking mechanism 42 is unlocked, if the spraying device 100 is enabled again, it is necessary to make the locking member 421 engage with the counting disk 6 again. Due to the meshing relationship between the locking member 421 and the counting disk 6, when the locking mechanism 42 is unlocked, the lowest point of the locking member 421 is lower than the highest point of the counting disk 6. In order for the counting disk 6 to rotate smoothly, by providing the convex structure 323, during the process of rotating the actuator 32 again after unlocking the locking mechanism 42, the convex structure 323 jacks up the locking member 421 in the second direction. In this way, the counting disk 6 can rotate smoothly. When the actuator 32 rotates until the convex structure 323 leaves the locking member 421, the first ratchet structure of the locking member 421 engages with the counting disk 6 again. Moreover, during the process of the convex structure 323 jacking up the locking member 421, since the balancing element 71 still remains engaged with the counting disk 6, the situation of tooth skipping can be prevented.

[0134] In an embodiment, when the counting disk 6 and the actuator 32 are in a cooperating state, the actuator 32 can drive the counting disk 6 to rotate for counting. When the counting disk 6 and the actuator 32 are in a non-cooperating state, the actuator 32 can rotate independently of the counting disk 6 to ensure that the counting disk 6 has a large counting capacity.

[0135] As Figure 12 shown, the actuator 32 is provided with an elastic arm 326. The elastic arm 326 is provided with a pawl structure 3261 and an abutting protrusion 3262. The pawl structure 3261 and the abutting protrusion 3262 are spaced apart in the first direction. As Figure 15 shown, the inner wall of the first housing 91 is provided with an annular protrusion 913. An inner concave portion 9131 is provided inside the annular protrusion 913. As Figure 13 shown, the inner wall of the counting disk 6 is provided with a fourth ratchet structure 63. The elastic arm 326 partially extends into the inner wall of the counting disk 6. When the actuator 32 rotates until the abutting protrusion 3262 extends into the inner concave portion 9131, the elastic arm 326 is in an initial state, and the pawl structure 3261 engages with the fourth ratchet structure 63. At this time, the counting disk 6 and the actuator 32 are in a cooperating state, and the counting disk 6 rotates along with the actuator 32 for counting. When the actuator 32 rotates until the abutting protrusion 3262 abuts against the annular protrusion 913, the groove wall of the annular protrusion 913 radially inwardly presses the abutting protrusion 3262, forcing the elastic arm 326 to deform inwardly, and further causing the pawl structure 3261 to disengage from the fourth ratchet structure 63. At this time, the counting disk 6 and the actuator 32 are in a non-cooperating state, and the counting disk 6 does not rotate along with the actuator 32.

[0136] In an embodiment, asFigure 1 , Figure 8 and Figure 12 As shown in Figure 1 , Figure 8 and Figure 12 , the first elastic member 412, the second elastic member 422, the third elastic member 72 and the fourth elastic member 33 are all springs, with simple structures.

[0137] It should be understood that "completing liquid suction" herein refers to the state of the spraying device 100 when the spraying device 100 completes one metered liquid suction.

[0138] It should be understood that the above embodiments are all exemplary and are not used to cover all possible implementation manners included in the claims. Without departing from the scope of the present disclosure, various deformations and changes can also be made on the basis of the above embodiments. Similarly, the technical features of the above embodiments can also be arbitrarily combined to form other embodiments of the present invention that may not be clearly described. Therefore, the above embodiments only represent several implementation manners of the present invention and do not limit the protection scope of the present invention patent.

Claims

1. A spraying device, characterized in that: The injection device (100) comprises: A container (1) for containing a liquid; The spray mechanism (2) comprises an infusion component (21); an actuating mechanism (3), comprising a retaining member (31) and an actuating member (32); the retaining member (31) is used to retain the infusion component (21) and is movably connected to the actuating member (32); when the actuating member (32) rotates, the retaining member (31) drives the infusion component (21) to move along a first direction, so that the infusion component (21) absorbs liquid from the container (1); a locking mechanism (42), wherein when the number of times the spray device (100) is used reaches a preset value and the infusion component (21) completes the liquid aspiration, the locking mechanism (42) locks the actuating member (32), and the retaining member (31) can drive the infusion component (21) to move along a second direction under an external force to trigger spraying; the first direction and the second direction are opposite; an unlocking auxiliary mechanism (8) located on a side of the container (1) facing the retaining member (31); When the locking mechanism (42) locks the actuator (32), if the container (1) is replaced, the new container (1) is configured to be able to push the unlocking auxiliary mechanism (8) to move to the unlocking position so as to release the locking mechanism (42) from locking the actuator (32); if an old container (1) is installed, the old container (1) is configured not to be able to push the unlocking auxiliary mechanism (8) to move to the unlocking position; During the first liquid aspiration process after the new container (1) is loaded, the structure of the new container (1) changes and becomes the old container (1).

2. The spraying device according to claim 1, characterized in that The injection device (100) further comprises a locking mechanism (41); When the number of times the injection device (100) is used does not reach a preset value and the infusion component (21) completes the absorption of liquid, the locking mechanism (41) locks the actuating member (32), and the retaining member (31) can drive the infusion component (21) to move along the second direction under an external force to trigger injection.

3. The spraying device according to claim 1 or 2, characterized in that: The unlocking auxiliary mechanism (8) comprises a first pushing member (81) and a second pushing member (82); When the locking mechanism (42) locks the actuating member (32), if the container (1) is replaced, the new container (1) is constructed to be able to push the second pushing member (82) to move along the second direction, so that the second pushing member (82) pushes the first pushing member (81) to move along the second direction to the unlocking position; if an old container (1) is installed, the old container (1) is constructed to be unable to push the first pushing member (81) to the unlocking position through the second pushing member (82).

4. The spraying device according to claim 3, characterized in that The spraying device (100) further includes a guide member (52); When the actuating member (32) rotates, the guiding member (52) is used to guide the retaining member (31) to move along a first direction to trigger liquid suction; When the retaining member (31) moves along the first direction to a complete liquid aspiration position, the guiding member (52) is used to prevent the retaining member (31) from moving along the second direction to trigger spraying.

5. The spraying device according to claim 4, characterized in that The container (1) is detachably mounted on the retaining member (31); During the first liquid aspiration process after the new container (1) is loaded, the guide member (52) is also used to guide the second push member (82) to move along the first direction, and the moving speed of the second push member (82) is greater than the moving speed of the retaining member (31), so that the second push member (82) can be displaced relative to the container (1) along the first direction, thereby enabling the second push member (82) to apply a force on the new container (1) along the first direction to transform the new container (1) into an old container (1).

6. The spraying device according to claim 5, characterized in that The spraying device (100) further comprises a counting disk (6) which realizes counting by rotating; The locking mechanism (42) comprises a locking component (421), and the locking component (421) is capable of switching between an initial position and a locking position by moving; When the number of times the spray device (100) is used does not reach a preset value, the counting disk (6) can prevent the locking component (421) from moving from the initial position to the locking position; When the number of times the spray device (100) is used reaches a preset value, the counting disk (6) does not prevent the locking component (421) from moving from the initial position to the locking position.

7. The spraying device according to claim 5, characterized in that The guiding member (52) comprises a first guiding inclined surface (521) and a third guiding inclined surface (5251), the retaining member (31) comprises a second guiding inclined surface (311), the second pushing member (82) is provided with a fourth guiding inclined surface (82111), and the second pushing member (82) can rotate together with the retaining member (31); When the actuating member (32) rotates to trigger liquid aspiration, the first guiding inclined surface (521) cooperates with the second guiding inclined surface (311) so that the retaining member (31) can move relative to the actuating member (32) along with the rotating of the actuating member (32); During the first liquid aspiration process after a new container (1) is loaded, the third guiding inclined surface (5251) cooperates with the fourth guiding inclined surface (82111) so that the second pushing member (82) can move relative to the holding member (31) along with the rotation of the holding member (31) and in the first direction; The inclination of the third guiding inclined surface (5251) is greater than the inclination of the first guiding inclined surface (521), so that the moving speed of the second pushing member (82) is greater than the moving speed of the retaining member (31).

8. The spraying device according to claim 7, characterized in that The second pushing member (82) and the retaining member (31) are plugged into each other to limit the second pushing member (82) from rotating relative to the retaining member (31), while not limiting the movement of the second pushing member (82) in the first direction and the second direction.

9. The spraying device according to claim 8, characterized in that The retaining member (31) is provided with a plurality of through holes (315), and two adjacent through holes (315) are separated by a limiting rib (313); the second pushing member (82) is provided with a limiting groove (823), and the limiting rib (313) is inserted into the limiting groove (823) along the first direction and the two are clearance-matched.

10. The spraying device according to claim 7, characterized in that The first guiding inclined surface (521) and the third guiding inclined surface (5251) are staggered and distributed along the first direction.

11. The spraying device according to claim 7, characterized in that: A protrusion (525) is provided on the side of the guide member (52) facing the container (1), and the third guide inclined surface (5251) is provided on the protrusion (525).

12. The spraying device according to claim 11, characterized in that The retaining member (31) is provided with a through hole (315); when a new container (1) is installed and the spraying device (100) is not in use, the protrusion (525) passes through the through hole (315) so that the third guide slope (5251) abuts against the fourth guide slope (82111).

13. The spraying device according to claim 5, characterized in that The container (1) comprises a container body (11) and an auxiliary component (12), wherein the auxiliary component (12) is detachably connected to the container body (11); When the container (1) is not activated, the auxiliary member (12) is in a first position; When a new container (1) is loaded, the second pushing member (82) abuts against the auxiliary member (12) along the first direction; During the first liquid aspiration process after a new container (1) is loaded, the second push member (82) applies a force on the auxiliary member (12) along a first direction to disconnect the auxiliary member (12) from the container body (11), and the second push member (82) drives the auxiliary member (12) to move to a second position, so that the container (1) becomes an old container (1).

14. The spraying device according to claim 13, characterized in that The container body (11) comprises a cover (111) and a container body (112), wherein the cover (111) is mounted on the container body (112); The auxiliary component (12) is connected to the cover body (111) via a connecting rib (13); when the force applied by the second push member (82) to the auxiliary component (12) is greater than a preset value, the connecting rib (13) is broken, so that the auxiliary component (12) is disconnected from the container body (11).

15. The spraying device according to claim 14, characterized in that The cover body (111) is in the shape of a hollow cylinder and is sleeved on the outer circumference of the body (112); a cavity (14) is formed between the inner wall of the cover body (111) and an end surface of the body (112) facing the auxiliary component (12); When the auxiliary member (12) is in the first position, the auxiliary member (12) is connected to the inner wall of the cover body (111) via the connecting rib (13); When the auxiliary member (12) is in the second position, the auxiliary member (12) is located in the cavity (14).

16. The spraying device according to claim 2, characterized in that The spray device (100) further comprises a trigger member (51) which is used to trigger the retaining member (31) to move along the second direction and unlock the locking mechanism (41), but cannot unlock the locking mechanism (42).

Images