Liquid dispensing device and adjustment mechanism

Abstract

The present application relates to a liquid dispensing device and a regulating mechanism, the liquid dispensing device comprising: a container assembly for containing liquid; a dispensing assembly comprising a liquid guiding element; a liquid sucking trigger assembly comprising a holding member and a triggering member, the holding member being movably connected to the triggering member; when the triggering member is rotated, the holding member drives the liquid guiding element to move in a first direction so that the liquid guiding element sucks liquid from the container assembly; a locking mechanism, when the dispensing times of the dispensing assembly reach a preset value, the locking mechanism directly locks the liquid dispensing device or locks the liquid dispensing device in the process of the triggering member being rotated again to trigger liquid sucking, so as to limit the further use of the liquid dispensing device; a regulating mechanism located on the side of the container assembly facing the holding member; wherein, when the locking mechanism locks the triggering member, if the container assembly is replaced, the new container assembly is configured to be able to push the regulating mechanism to move to an unlocked position to unlock the locking mechanism; if the old container assembly is installed, the old container assembly is configured to be unable to push the regulating mechanism to move to the unlocked position. The liquid dispensing device of the present application can prevent the user from forcibly unlocking by other tools and avoid the user from continuing to use the old container assembly.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a liquid dispensing device and regulating mechanism. Background Technology

[0002] To ensure accurate measurement, liquid dispensing devices are typically equipped with a counting mechanism, a locking mechanism, and an unlocking mechanism. The counting mechanism measures the number of times the liquid dispensing device has been used since the current container was installed. When the number of dispensing times reaches a preset value, the locking mechanism engages to prevent the user from continuing to use the liquid dispensing device, which could lead to inaccurate drug delivery. When a new container is installed, the unlocking mechanism can unlock the locking mechanism so that the user can restart the liquid dispensing device.

[0003] CN111821546B discloses a sprayer in which a blocking part disposed within an indicator device abuts axially against a driving part disposed on the bottom wall of the outer casing. The driving part prevents the blocking part from moving downward, thus preventing the container from moving downward and locking the container. Furthermore, after the outer casing is removed, the locking component of the locking device cooperates with a locking spring to lock the inner component and the upper outer casing, preventing the user from continuing to use the sprayer by directly rotating the inner component, thus functioning as a locking device. After the outer casing is installed, an actuator disposed on the outer casing can push the locking component upward to unlock it. In this design, the actuator is a columnar structure, allowing the user to forcibly unlock and continue using the old container using any columnar structure after the outer casing is removed. Summary of the Invention

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a liquid dispensing device that can prevent users from forcibly unlocking it with other tools and prevent users from continuing to use old container components.

[0005] Therefore, the present invention provides the following technical solution.

[0006] The first objective of this invention is to provide a liquid dispensing device, the liquid dispensing device comprising:

[0007] Container components used to hold liquids;

[0008] A dispensing assembly, which includes a liquid guiding element;

[0009] A liquid aspiration trigger assembly includes a retainer and a trigger, the retainer being movably connected to the trigger; when the trigger rotates, the retainer drives the liquid guiding element to move in a first direction, so that the liquid guiding element aspirates liquid from the container assembly;

[0010] A locking mechanism is provided so that when the number of dispensing operations of the dispensing component reaches a preset value, the locking mechanism directly locks the liquid dispensing device or locks the liquid dispensing device during the process of the trigger rotating again to trigger liquid aspiration, thereby restricting further use of the liquid dispensing device.

[0011] An adjustment mechanism is located on the side of the container assembly facing the retainer;

[0012] When the locking mechanism locks the trigger, if the container assembly is replaced, the new container assembly is configured to push the adjustment mechanism to the unlock position to unlock the locking mechanism; if the old container assembly is installed, the old container assembly is configured not to push the adjustment mechanism to the unlock position.

[0013] Preferably, the locking mechanism includes a locking component, which moves to a first locking position to lock the trigger when the number of distributions reaches a preset value;

[0014] During the process of the adjustment mechanism moving to the unlock position, the adjustment mechanism pushes the locking component to move away from the first locking position.

[0015] Preferably, during the first triggering of the dispensing component after unlocking, the new container component undergoes a structural change and becomes the old container component.

[0016] Preferably, the container assembly includes a container body and an adjustable component, wherein the adjustable component is mounted on the container body; wherein,

[0017] When the adjustable member is in the first position, the container assembly is a new container assembly; when the adjustable member is in the second position, the container assembly is an old container assembly, and the first position and the second position are distributed sequentially along the first direction.

[0018] Preferably, the container body includes a first mounting portion;

[0019] When the container assembly is not in use, the adjustable member is detachably connected to the first mounting part, and at this time, the adjustable member is in the first position;

[0020] When a new container assembly is inserted along the second direction, the adjustable member abuts against the adjustment mechanism and pushes the adjustment mechanism to move to the unlocked position, wherein the first direction and the second direction are opposite;

[0021] During the first triggering of the dispensing component after unlocking, the adjustable component disengages from the first mounting part and moves to the second position;

[0022] When the adjustable member is in the second position, the adjustable member cannot push the adjustment mechanism to the unlock position.

[0023] Preferably, the adjustable element is a plug.

[0024] Preferably, the container body includes a second mounting portion;

[0025] During the first triggering of the dispensing component after unlocking, the adjustable member detaches from the first mounting part and moves to be connected to the second mounting part. At this time, the adjustable member is in the second position.

[0026] Preferably, the adjustable member is connected to the first mounting part and / or the second mounting part by means of fastening, snapping, or adsorption.

[0027] Preferably, the container body includes a body and a lid, the lid being connected to the body; the lid has openings at both ends, and the first mounting portion and the second mounting portion are disposed at the lid.

[0028] Preferably, the liquid dispensing device includes an auxiliary component, and the adjusting mechanism includes a first pusher, the auxiliary component and the first pusher being distributed sequentially along the first direction;

[0029] During the first triggering of liquid dispensing after unlocking, the retaining member drives the container assembly and the liquid guiding element to move along the second direction, the adjustable member pushes the first pusher to move, and under the pressure of the auxiliary member, the adjustable member disengages from the first mounting part and moves to the second position.

[0030] Preferably, the adjustment mechanism includes a second pusher movably connected to the trigger; the first pusher pushes the second pusher to move along the second direction to unlock the locking mechanism.

[0031] Preferably, the second pusher is movably connected to the trigger along the first direction or the second direction.

[0032] Preferably, the trigger is sleeve-shaped, the first pusher is located inside the trigger, and the locking mechanism is located outside the trigger.

[0033] Preferably, the trigger member is provided with a first limiting groove, and the second push member includes an unlocking part, a connecting part and a first abutting part connected in sequence, wherein the connecting part is movably engaged with the first limiting groove;

[0034] The first pusher pushes the first abutting part so that the unlocking part pushes the locking mechanism along the second direction.

[0035] Preferably, the first pusher includes a limiting rib, the retainer has a through hole, and the limiting rib is movably inserted into the through hole; the through hole and the limiting rib are shaped to restrict the first pusher from rotating.

[0036] Preferably, the adjustment mechanism includes a second pusher; the first pusher includes a first extension arm, the first extension arm having a second abutment portion, the second abutment portion being used to push the second pusher to move along the second direction to unlock the locking mechanism.

[0037] Preferably, the liquid dispensing device includes a counting dial, which is provided with a limiting part and a clearance part;

[0038] When the number of allocations reaches a preset value and locking is triggered, the locking component and the yielding part are positioned opposite each other in the first direction, and the yielding part is used to allow the locking component to move to the first locking position;

[0039] When liquid aspiration is triggered after unlocking, the code disk rotates until the limiting part and the locking component are positioned opposite each other in the first direction. The limiting part is used to restrict the movement of the locking component to the first locking position.

[0040] Preferably, when a new container assembly is loaded, the liquid dispensing device uses an air-jet operation to rotate the encoder to the initial counting position.

[0041] Preferably, the code disk is fitted onto the trigger element;

[0042] When the code disk and the trigger are in a cooperative state, the trigger can drive the code disk to rotate to perform counting;

[0043] When the code disk and the trigger are not in a mating state, the trigger can rotate independently of the code disk.

[0044] Preferably, the auxiliary component is provided with a first guide portion, and the retaining component is provided with a second guide portion; the first guide portion and the second guide portion cooperate to guide the retaining component to move relative to the triggering component along the first direction.

[0045] Preferably, when the liquid guiding element has completed liquid absorption and the number of dispensing operations has not reached a preset value, the locking mechanism locks the trigger element.

[0046] Preferably, the locking mechanism includes a locking component, and the trigger is provided with a first limiting structure and a second limiting structure. The first limiting structure and the second limiting structure are distributed sequentially along the circumference of the trigger and are staggered along the first direction.

[0047] When the number of allocations reaches a preset value and locking is triggered, the locking component moves along the first direction and locks itself to the first limiting structure;

[0048] When the number of allocations fails to reach a preset value and a locking mechanism is triggered, the locking component moves along the first direction and locks itself to the second limiting structure.

[0049] Preferably, when the retainer moves in the second direction to reset, the retainer pushes the locking member away from the second limiting structure to unlock; wherein the first direction and the second direction are opposite.

[0050] A second objective of the present invention is to provide an adjustment mechanism disposed between a container assembly and a liquid-suction trigger assembly of a liquid dispensing device;

[0051] During the first use of the liquid dispensing device after a new container assembly has been installed, the adjustment mechanism causes the construction of the new container assembly to change, making it the old container assembly; wherein the new container assembly can release the locking mechanism from restricting the use of the liquid dispensing device, while the old container assembly cannot release the restriction.

[0052] Preferably, during the first triggering of the liquid dispensing device's dispensing component after replacing with a new container component, the adjusting mechanism changes the new container component back to the old container component.

[0053] Preferably, the container assembly includes a connected container body and an adjustable component;

[0054] During the first triggering of the dispensing component after replacing with a new container assembly, the adjustment mechanism causes the adjustable member to move from a first position to a second position. When the adjustable member is in the first position, the container assembly is the new container assembly; when the adjustable member is in the second position, the container assembly is the old container assembly. The first position and the second position are distributed sequentially along a first direction.

[0055] Preferably, the adjustment mechanism includes a first pusher, which pushes the adjustable member from a first position to a second position during the first triggering of the dispensing component to dispense liquid.

[0056] Preferably, the adjusting mechanism includes a second pusher. During the loading of a new container assembly, the container assembly pushes the first pusher, which in turn pushes the second pusher to move. The second pusher releases the locking mechanism from restricting the use of the liquid dispensing device.

[0057] The present invention has the following technical effects:

[0058] (1) The liquid dispensing device provided by the present invention has the adjustment mechanism set on the side of the container assembly facing the retainer, which can prevent the user from pushing the adjustment mechanism with other tools to forcibly unlock it.

[0059] (2) The liquid dispensing device provided by the present invention constructs the new container component and the old container component into different structures. Only when the new container component is installed can the adjustment mechanism be driven to unlock. If the old container component is reinstalled, it cannot be unlocked, which can ensure the security of the lock and prevent the user from continuing to use the old container component.

[0060] (3) The present invention also provides an adjustment mechanism. During the first use of the liquid dispensing device after a new container component has been replaced, the adjustment mechanism can change the structure of the new container component so that the new container component becomes the old container component. In this way, when the number of times the liquid dispensing device is used reaches a preset value and is restricted from further use by the locking mechanism, the liquid dispensing device can only be used after the new container component is replaced and the locking mechanism is unlocked. Attached Figure Description

[0061] Figure 1 This is a partial structural cross-sectional view of the liquid dispensing device of the present invention. Figure 1 ;

[0062] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0063] Figure 3 This is a three-dimensional structural diagram of the first pusher of the present invention;

[0064] Figure 4 This is a three-dimensional structural diagram of the second pusher of the present invention;

[0065] Figure 5 This is a cross-sectional view of the container assembly when the adjustable component of the present invention is connected to the first mounting part;

[0066] Figure 6 This is a cross-sectional view of the container assembly when the adjustable component of the present invention is connected to the second mounting part;

[0067] Figure 7 This is a three-dimensional structural diagram of the adjustable component of the present invention;

[0068] Figure 8 This is a three-dimensional structural diagram of the cover body of the present invention;

[0069] Figure 9 This is a schematic diagram of the assembly structure of the retainer and the liquid guiding element of the present invention;

[0070] Figure 10 This is a partial structural cross-sectional view of the liquid dispensing device of the present invention. Figure 2;

[0071] Figure 11 for Figure 10 Enlarged view at point B in the middle;

[0072] Figure 12 This is a three-dimensional structural diagram of the trigger element of the present invention;

[0073] Figure 13 This is a schematic diagram of the assembly structure of the trigger and the second pusher of the present invention;

[0074] Figure 14 This is a three-dimensional structural diagram of the liquid dispensing device of the present invention;

[0075] Figure 15 for Figure 14 Enlarged view at point C;

[0076] Figure 16 This is a three-dimensional structural cross-sectional view of the liquid dispensing device of the present invention;

[0077] Figure 17 for Figure 16 Enlarged view at point D;

[0078] Figure 18 This is a three-dimensional structural diagram of the first housing of the present invention;

[0079] Figure 19 This is the three-dimensional structure of the retaining member of the present invention;

[0080] Figure 20 This is a three-dimensional structural diagram of the auxiliary component of the present invention;

[0081] Figure 21 This is a three-dimensional structural diagram of the second housing of the present invention.

[0082] Explanation of reference numerals in the attached figures

[0083] 100. Liquid distribution device;

[0084] 1. Container assembly; 11. Container body; 111. Container body; 112. Cover; 1121. First mounting part; 1122. Second mounting part; 1123. Snap groove; 1124. Second snap; 12. Adjustable part; 121. First snap;

[0085] 2. Dispensing assembly; 21. Liquid guiding element; 22. Dispensing structure; 221. Nozzle; 222. Pressure chamber; 223. Pump body;

[0086] 3. Liquid aspiration trigger assembly; 31. Holding member; 311. Through hole; 312. Second guide part; 3121. Second guide surface; 3122. Third stop surface; 3123. Second reset guide surface; 313. Third latch; 314. Second limiting groove; 315. Third limiting groove; 316. Boss; 32. Trigger; 321. First limiting groove; 322. First limiting structure; 323. Second limiting structure; 324. First limiting protrusion; 325. Abutment surface; 3251. First slope; 3252. Second slope; 326. Arc-shaped protrusion; 327. Second limiting protrusion; 328. Elastic arm; 3281. Pawl structure; 3282. Abutment protrusion;

[0087] 4. Locking mechanism; 41. Locking component; 411. Locking structure; 412. Third abutment part; 413. Fourth abutment part; 414. Second fixing post; 42. Second reset elastic element;

[0088] 5. Adjustment mechanism; 51. First pusher; 511. Limiting rib; 512. First extension arm; 5121. Second abutment part; 52. Second pusher; 521. Unlocking part; 522. Connecting part; 523. First abutment part; 524. Abutment block;

[0089] 6. Auxiliary component; 61. First guide part; 611. First stop surface; 612. First guide surface; 613. Second stop surface; 614. First reset guide surface; 62. Second extension arm;

[0090] 7. Encoder; 71. Limiting part; 72. Clearing part; 73. Ratchet structure;

[0091] 81. First housing; 811. Guide groove; 812. First annular groove; 813. First fixing post; 814. Second annular groove; 8141. Recess;

[0092] 82. Second housing; 821. Fourth limiting groove;

[0093] 91. First reset elastic element;

[0094] 92. Button. Detailed Implementation

[0095] To make the technical solution and beneficial effects of the present invention more apparent and understandable, a detailed description is provided below by listing specific embodiments. Unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application pertains.

[0096] In the description of this invention, unless otherwise expressly defined, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this invention and do not indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. That is, they should not be construed as limiting this invention.

[0097] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating the relative importance of the indicated features or the number of indicated technical features. Therefore, a feature specified as "first" or "second" can explicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two; "several" means at least one; unless otherwise expressly defined.

[0098] In this invention, unless otherwise explicitly defined, the terms "installation," "connection," "linking," "fixing," and "setting," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral molding; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0099] In this invention, unless otherwise explicitly defined, the terms "above," "on top of," "over," "above," "below," "below," "below," or "below" for "first feature above second feature" can refer to the first and second features being in direct contact, or to the first and second features being in indirect contact through an intermediate medium. Furthermore, "above," "over," and "below" for "first feature above second feature" can mean the first feature is directly above or diagonally above the second feature, or simply indicates that the horizontal height of the first feature is higher than the horizontal height of the second feature. Similarly, "below," "below," and "below" for "first feature below second feature" can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0100] In this invention, "upper" and "lower" are both used in the sense of... Figure 1 The markings in the text shall prevail.

[0101] Currently, the slurry dispenser (liquid dispensing device) for Spiriva brand tiotropium bromide inhaler uses a double-walled bottle with an inner soft film bag. Because there is no backflow of gas when drawing the medication from the container, the soft film bag's tensile strength can resist liquid extraction with repeated use, potentially leading to inaccurate dispensing. Therefore, for accurate dispensing, the container must retain sufficient medication to minimize wrinkles in the soft film bag, and the number of uses must be limited to ensure adequate remaining volume. Consequently, the liquid dispensing device needs a counting mechanism and a locking structure to restrict further use when the preset number of dispensing cycles is reached, preventing inaccurate dispensing.

[0102] The following is based on Figures 1 to 21 The liquid dispensing device of the present invention will be described in detail.

[0103] In this embodiment, such as Figure 1 , Figure 2 and Figure 14 As shown, the liquid dispensing device 100 includes a container assembly 1, a dispensing assembly 2, a liquid suction trigger assembly 3, a locking mechanism 4, and an adjusting mechanism 5. The container assembly is used to contain liquid. The dispensing assembly 2 includes a liquid guiding element 21 and a dispensing structure 22. The dispensing structure 22 includes a nozzle 221, a pressure chamber 222, and a pump body 223. One end of the liquid guiding element 21 is inserted into the container assembly 1, and the other end is movably inserted into the pump body 223 of the dispensing structure 22.

[0104] The liquid aspiration trigger assembly 3 includes a retainer 31 and a trigger 32, with the retainer 31 movably connected to the trigger 32. When the trigger 32 rotates, the retainer 31 drives the liquid guiding element 21 to move along a first direction, and the liquid guiding element 21 draws liquid from the container assembly 1 into the pressure chamber 222 for temporary storage. When the retainer 31 drives the liquid guiding element 21 to move relative to the distribution structure 22 along a second direction, the liquid in the pressure chamber 222 is ejected through the nozzle 221, wherein the first direction is opposite to the second direction.

[0105] When the number of liquid dispensing cycles of the dispensing component 2 reaches a preset value, the locking mechanism 4 directly locks the liquid dispensing device 100; or, when the number of dispensing cycles of the dispensing component 2 reaches a preset value, during the process of the trigger 32 rotating again to trigger liquid aspiration, the locking mechanism 4 locks the liquid dispensing device 100 to limit further use of the liquid device 100 and ensure the accuracy of the liquid dispensing dosage.

[0106] Because the locking mechanism 4 locks the liquid dispensing device 100, the user cannot continue to use the liquid in the old container assembly 1. Furthermore, because the adjusting mechanism 5 is located on the side of the container assembly 1 facing the retainer 31, the user cannot forcibly push the adjusting mechanism 5 to unlock it. Removing the old container assembly 1 and installing the new container assembly 1, the new container assembly 1 is configured to push the adjusting mechanism 5 to the unlocked position, thereby unlocking the locking mechanism 4, allowing the user to use the liquid in the new container assembly 1. If the old container assembly 1 is removed and then reinstalled, the old container assembly 1 is configured not to push the adjusting mechanism 5 to the unlocked position.

[0107] By adopting the above technical solution, the adjustment mechanism 5 is positioned on the side of the container assembly 1 facing the retainer 31, which can prevent the user from forcibly unlocking it with other tools. Furthermore, the new container assembly 1 and the old container assembly 1 are constructed with different structures, so that the adjustment mechanism 5 can only be pushed to unlock when the new container assembly 1 is inserted. If the old container assembly 1 is re-inserted, it cannot be unlocked, thereby ensuring the security of the lock and preventing the user from continuing to use the old container assembly 1.

[0108] In one embodiment, when the number of dispensing times of the dispensing component 2 reaches a preset value, the locking structure 4 directly locks the trigger 32, or locks the trigger 32 during the process of the trigger 32 rotating again to trigger liquid aspiration. Since the trigger 32 cannot rotate, the retaining member 31 cannot drive the liquid guiding element 21 to move in the first direction to trigger liquid aspiration, thus achieving locking.

[0109] In one implementation, such as Figure 1 As shown, the direction of the downward movement of the retainer 31 is the first direction, and the direction of the upward movement is the second direction. Of course, the direction of movement of the retainer 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.

[0110] The following text will take downward as the first direction and upward as the second direction as an example for specific explanation.

[0111] In one implementation, such as Figure 14 As shown, the liquid dispensing device 100 includes a first housing 81 and a second housing 82, which together form the outer contour structure of the liquid dispensing device 100. The dispensing structure 22 is fixed inside the first housing 81, and the upper part of the trigger 32 is rotatably connected to the first housing 81. The second housing 82 is sleeved on the outer periphery of the trigger 32, and the two are engaged. When using the liquid dispensing device 100, the user manually rotates the second housing 82, which drives the trigger 32 to rotate, thereby driving the retaining member 31 to move the liquid guiding element 21 downward to trigger liquid aspiration. When the number of dispensing times reaches a preset value, the second housing 82 is removed, the old container assembly 1 is pulled out, and a new container assembly 1 is installed.

[0112] Of course, the second housing 82 can be rotated manually to drive the trigger 32 to rotate, or a driver can be built into the liquid dispensing device 100 to automatically drive the trigger 32 to rotate.

[0113] In one implementation, such as Figure 1 and Figure 14 As shown, the liquid dispensing device 100 includes a first reset elastic member 91, which is sleeved on the outer periphery of the container assembly 1. One end of the first reset elastic member 91 abuts against the bottom wall of the retainer 31, and the first reset elastic member 91 is used to provide reset force for the retainer 31. Preferably, the first reset elastic member 91 is a spring.

[0114] In one implementation, such as Figure 9 and Figure 14 As shown, the trigger 32 is sleeved on the outer periphery of the container assembly 1, the liquid guiding element 21 is fixed to the retainer 31, the upper part of the container assembly 1 is detachably connected to the retainer 31 (for example, the two are fastened together), the adjustment mechanism 5 is located above the container assembly 1, and the container assembly 1, the liquid guiding element 21 and the retainer 31 can move synchronously.

[0115] In one implementation, such as Figure 1 and Figure 2 As shown, the locking mechanism 4 includes a locking component 41. When the dispensing number of times the dispensing component 2 reaches a preset value and triggers locking, the locking component 41 locks the trigger element 32. At this time, the locking component 41 is located in the first locked position. When the container component 1 is replaced, the new container component 1 is inserted upward into the trigger element 32. The container component 1 moves upward until it contacts the adjustment mechanism 5, and then pushes the adjustment mechanism 5 to move upward. The adjustment mechanism 5 pushes the locking component 41 upward to disengage from the trigger element 32, thereby unlocking the device. The locking component 41 leaves the first locked position. In this solution, locking is achieved by changing the position of the locking component 41, and the trigger element 32 is directly locked. Compared with the solution in CN111821546B, which requires the removal of the outer shell (equivalent to the second shell 82 in this solution) before the locking component locks the inner component (equivalent to the trigger element 32 in this solution), this solution can trigger the locking of the entire device without removing the second shell 82, resulting in more stable locking.

[0116] In one embodiment, during the first triggering of the dispensing component 2 after unlocking, the new container component 1 undergoes a structural change and becomes the old container component 1.

[0117] Furthermore, the container assembly 1 includes a container body 11 and an adjustable member 12, which is mounted on the container body 11. When the adjustable member 12 is in a first position, the container assembly 1 is a new container assembly 1; when the adjustable member 12 is in a second position, the container assembly 1 is the old container assembly 1. The first and second positions are sequentially distributed along a first direction, and the structural changes between the new and old container assemblies 1 are achieved by changing the position of the adjustable member 12 in the first direction.

[0118] Furthermore, such as Figure 1 , Figure 2 , Figures 5 to 8 As shown, the container body 11 includes a first mounting portion 1121. When the container assembly 1 is not activated (new container assembly 1), the adjustable member 12 is detachably connected to the first mounting portion 1121. At this time, the adjustable member 12 is in a first position, and the first position and the second position are spaced apart along a first direction. When a new container assembly 1 is inserted upwards, the adjustable member 12 moves upwards to abut against the adjustment mechanism 5. Then, the adjustable member 12 pushes the adjustment mechanism 5 upwards to the unlocked position to unlock. During the first triggering of the nozzle 221 to dispense liquid after unlocking, the adjustable member 12 disengages from the first mounting portion 1121 and moves to the second position. At this time, the container assembly 1 is activated, and the position of the adjustable member 12 changes. In this design, when the container assembly 1 is not in use, the adjustable member 12 is installed via the first mounting part 1121 to prevent it from moving easily. When a new container assembly 1 is installed, the adjustable member 12 connected to the first mounting part 1121 can push the adjustment mechanism 5 to the unlocked position. However, if the old container assembly 1 is reinstalled, the adjustable member 12 in the second position cannot contact the adjustment mechanism 5, or it can contact the adjustment mechanism 5 but cannot push it to move sufficiently, preventing the adjustment mechanism 5 from moving to the unlocked position to unlock the locking mechanism 4. Therefore, the user cannot continue using the old container assembly 1. Preferably, the adjustable member 12 is a plug.

[0119] Furthermore, the container body 11 includes a second mounting portion 1122, and the first mounting portion 1121 and the second mounting portion 1122 are spaced apart along a first direction. During the first triggering of the dispensing component 2 to dispense liquid after unlocking, the adjustable member 12 disengages from the first mounting portion 1121 and moves to be connected to the second mounting portion 1122. At this time, the adjustable member 12 is in a second position. The height of the first mounting portion 1121 is higher than the height of the second mounting portion 1122. Thus, when replacing with a new container component 1, the adjustable member 12 connected to the first mounting portion 1121 can push the adjustment mechanism 5 to the unlocked position. However, if the old container component 1 is reinstalled, the adjustable member 12 connected to the second mounting portion 1122 cannot contact the adjustment mechanism 5, or it can contact the adjustment mechanism 5 but its distance of pushing the adjustment mechanism 5 is insufficient. The adjustment mechanism 5 cannot move to the unlocked position to unlock the locking mechanism 4, and the user cannot continue to use the old container component 1.

[0120] Furthermore, the adjustable member 12 is connected to the first mounting part 1121 and / or the second mounting part 1122 by a snap-fit, latch-fit, or magnetic connection, resulting in a simple assembly structure. In one specific embodiment, such as Figure 2 , Figures 5 to 8 As shown, the adjustable member 12 is provided with a first buckle 121, and the first mounting part 1121 and the second mounting part 1122 are slot structures. When the container assembly 1 is not in use, the adjustable member 12 is inserted into the open end of the container body 11 and the first buckle 121 is engaged with the first mounting part 1121. When a new container assembly 1 is installed and initially in use, the adjustable member 12 moves downward until the first buckle 121 is engaged with the second mounting part 1122.

[0121] Furthermore, such as Figure 2 , Figures 5 to 9 As shown, the container body 11 includes a body 111 and a lid 112. The lid 112 is connected to the body 111 and has openings at both ends. A second latch 1124 is provided at the lower end of the lid 112, which latches onto the outer wall of the body 111. A latch groove 1124 is provided on the outer wall of the lid 112. A retainer 31 has a third latch 313, which latches onto the latch groove 1123. A first mounting part 1121 and a second mounting part 1122 are provided on the inner wall of the lid 112. By designing the container body 11 as a split structure, processing costs can be reduced. Of course, the connection method between the body 111 and the lid 112 is not limited to latching; it can also be fixed by heat pressing. Alternatively, the body 111 and the lid 112 can be a single-piece structure.

[0122] In one implementation, such as Figures 1 to 3As shown, the liquid dispensing device 100 includes an auxiliary component 6, and the adjusting mechanism 5 includes a first pusher 51. The auxiliary component 6 and the first pusher 51 are distributed sequentially along a first direction. During the first trigger dispensing process after unlocking, the retaining component 31 drives the container assembly 1 and the liquid guiding element 21 to move upward. The adjustable component 12 pushes the first pusher 51 upward. Since the auxiliary component 6 is stationary, it presses down against the first pusher 51. The first pusher 51 presses down against the adjustable component 12. At this time, the container body 11 continues to move upward, causing the adjustable component 12 to move downward relative to the container body 11 and disengage from the first mounting part 1121. Then, the adjustable component 12 continues to move downward relative to the container body 11 until it is connected to the second mounting part 1122. The container assembly 1 stops at the upper limit position (initial position), and the liquid dispensing device 100 completes the liquid dispensing and returns to the initial state. In this solution, the auxiliary component 6 presses down on the first pusher 51, which ultimately drives the adjustable component 12 to move downward to change its installation position, thereby changing the structure of the old container assembly 1. This makes it so that when the container assembly 1 needs to be replaced, inserting the old container assembly 1 will not push the adjustment mechanism 5 to the unlock position.

[0123] It should be understood that in the above scheme, when the liquid dispensing device 100 is in the initial state, the upper end face of the first pusher 51 abuts against the lower end face of the auxiliary member 6. Since the adjustable member 12 needs to push the first pusher 51 upward when the new container assembly 1 is replaced, the locking mechanism 4 locks the trigger member 32 during the process of the trigger member 32 rotating again to trigger the liquid aspiration. In this way, the retaining member 31 drives the container assembly 1 to move downward by a certain distance, so that there is a gap between the first pusher 51 and the auxiliary member 6. This gap is used to allow the adjustable member 12 to push the first pusher 51 upward during the unlocking process.

[0124] Furthermore, such as Figure 12 , Figure 17 , Figure 19 and Figure 20 As shown, the auxiliary component 6 has a first guide portion 61, the retaining component 31 has a second guide portion 312, the outer wall of the retaining component 31 has a third limiting groove 315, the third limiting groove 315 extends along the axial direction of the retaining component 31, and the inner wall of the triggering component 32 has a first limiting protrusion 324, which is movably engaged with the third limiting groove 315. Through the surface-to-surface cooperation of the first guide portion 61 and the second guide portion 312, the first limiting protrusion 324 can move downwards in the third limiting groove 315 as the retaining component 31 rotates with the triggering component 32, thus guiding the retaining component 31 to move downwards relative to the triggering component 32.

[0125] Furthermore, such as Figure 19 and Figure 20As shown, there are two first guide portions 61 and they are rotationally symmetrical about the central axis of the auxiliary component 6. The first guide portion 61 includes a first stop surface 611, a first guide surface 612, a second stop surface 613 and a first reset guide surface 614 connected in sequence. The second guide portion 312 includes a second guide surface 3121, a third stop surface 3122 and a second reset guide surface 3123 connected in sequence.

[0126] When the liquid dispensing device 100 is in its initial state, the third stop surface 3122 and the first stop surface 611 are positioned opposite each other and are in clearance fit. When the trigger 32 is rotated to trigger liquid aspiration, the trigger 32 drives the retaining member 31 to rotate. With the surface fit between the second guide surface 3121 and the first guide surface 612, the retaining member 31 rotates while moving downward relative to the trigger 32, and the first reset elastic member 91 is compressed. When the retaining member 31 moves downward to its lower limit position, the third stop surface 3122 abuts upward against the second stop surface 613. The liquid guiding element 21 completes liquid absorption; when the nozzle 221 of the trigger distribution structure 22 discharges liquid, the auxiliary component 6 rotates at a certain angle so that the second stop surface 613 disengages from the third stop surface 3122. Under the rebound force of the first reset elastic component 91, the second reset guide surface 3123 moves upward along the first reset guide surface 614 until the third stop surface 3122 is reset to be located below the first stop surface 611. The second guide surface 3121 and the first guide surface 612 are opposite each other and the two are in clearance fit. At this time, the retaining component 31 is in the upper limit position.

[0127] Furthermore, such as Figure 14 and Figure 20 As shown, the liquid dispensing device 100 is equipped with a button 92, and the auxiliary component 6 is equipped with a second extension arm 62. When the dispensing number of the dispensing component 2 has not reached the preset value and the liquid guiding element 21 needs to trigger liquid dispensing after completing liquid absorption, the button 92 is pressed. The button 92 pushes the second extension arm 62, causing the auxiliary component 6 to rotate at a certain angle, thereby causing the second stop surface 613 to disengage from the third stop surface 3122.

[0128] Furthermore, the auxiliary component 6 is rotatably confined within the first housing 81 by means of a slot and a protrusion, and the rotatable angle of the auxiliary component 6 is limited by limiting the width of the slot. Figure 14 , Figure 19 and Figure 20 As shown, when liquid aspiration is triggered, the trigger 32 drives the retainer 31 to rotate. Since the second guide surface 3121 pushes the first guide surface 612, the retainer 31 and the auxiliary component 6 rotate synchronously. At this time, the auxiliary component 6 rotates and pushes the button 92 to reset. The retainer 31 only rotates and does not move because the auxiliary component 6 rotates synchronously. When the auxiliary component 6 rotates to a certain angle and can no longer rotate, the retainer 31 rotates and moves downward to trigger liquid aspiration.

[0129] In one implementation, such as Figure 2 , Figure 10 and Figure 11 As shown, the adjusting mechanism 5 includes a second pusher 52, which is movably connected to the trigger 32. When unlocking, the first pusher 51 pushes the second pusher 52 upward to unlock the locking mechanism 4. Due to the limited internal space of the liquid dispensing device 100, this design, by incorporating a cooperating first pusher 51 and a second pusher 52, facilitates the assembly of the adjusting mechanism 5 within a limited space. Of course, the first pusher 51 and the second pusher 52 can also be an integral structure.

[0130] Furthermore, such as Figure 2 , Figure 11 and Figure 15 As shown, the second pusher 52 is movably connected to the trigger 32 in an upward or downward direction. Assembling the second pusher 52 onto the trigger 32 is beneficial for a compact structure.

[0131] In one implementation, such as Figure 1 and Figure 2 As shown, the trigger 32 is sleeve-shaped, the first pusher 51 is located inside the trigger 32, and the locking mechanism 4 is located outside the trigger 32. This can prevent the user from directly unlocking the locking mechanism 4 using other tools.

[0132] Furthermore, such as Figure 4 , Figures 11 to 15 As shown, the trigger member 32 is provided with a first limiting groove 321, and the second push member 52 includes an unlocking part 521, a connecting part 522, and a first abutting part 523 connected in sequence. The connecting part 522 passes through the first limiting groove 321 and the two are movably engaged. When unlocking, the new container assembly 1 pushes the first push member 51 upward, and the first push member 51 pushes the first abutting part 523 upward, so that the unlocking part 521 pushes the locking mechanism 4 upward, causing the locking mechanism 4 to disengage from the trigger member 32, thereby achieving unlocking.

[0133] Furthermore, such as Figure 2 and Figure 9 As shown, the retaining member 31 is provided with a second limiting groove 314, which extends in a downward or upward direction. The first abutting part 523 is movably engaged with the second limiting groove 314, thereby limiting the second pusher 52 from wobbling in the circumferential direction of the retaining member 31. Figure 2 and Figure 11As shown, the second pusher 52 is provided with an abutment block 524, and the connecting part 522 and the first abutment part 523 are respectively connected to both sides of the abutment block 524. The inner wall of the trigger member 32 abuts against the abutment block 524, and the outer wall of the retainer 31 abuts against the first abutment part 523, thereby limiting the second pusher 52 from wobbling in the radial direction of the retainer 31. Furthermore, the second limiting groove 314 is provided with bosses 316 on both sides, and the bosses 316 abut against the abutment block 524.

[0134] In one implementation, such as Figure 2 , Figure 3 and Figure 9 As shown, the first pusher 51 includes a limiting rib 511 extending along the moving direction of the first pusher 51. The retaining member 31 has a through hole 311, and the limiting rib 511 is movably inserted upward into the through hole 311. Thus, by matching the shape of the through hole 311 with the limiting rib 511, rotation of the first pusher 51 is restricted, allowing the first pusher 51 to move only upward or downward. Furthermore, the limiting rib 511 is arc-shaped, and the through hole 311 is fan-shaped. In addition, to improve the stability of the limiting, the number of limiting ribs 511 is two, three, or even more, with each through hole 311 matching one limiting rib 511. The auxiliary component 6 is partially inserted downward into the retainer 31. Thus, during the first triggering of liquid dispensing after unlocking, the adjustable component 12 pushes the first pusher 51 upward, and the limiting rib 511 is inserted upward into the retainer 31 until the top wall of the limiting rib 511 abuts against the bottom wall of the auxiliary component 6. The auxiliary component 6 presses down against the limiting rib 511, and by pressing against the first pusher 51, the adjustable component 12 is pressed downward and disengaged from the first mounting part 1121.

[0135] Furthermore, such as Figure 2 , Figure 3 and Figure 15 As shown, the first pusher 51 includes a first extension arm 512, which is bent to extend toward the second pusher 52 after passing over the third latch 313 below the retainer 31. The first extension arm 512 is provided with a second abutment portion 5121. When unlocking, the first pusher 51 moves upward until the second abutment portion 5121 abuts against the first abutment portion 523 of the second pusher 52, thereby pushing the second pusher 52 upward to the unlock position to unlock the locking mechanism 4.

[0136] In one implementation, such as Figure 1 , Figures 15 to 17As shown, the liquid dispensing device 100 includes a code disk 7, which has a limiting part 71 and a clearance part 72. The code disk 7 is sleeved on the outer periphery of the trigger member 32. The outer periphery of the code disk 7 has numerical markings, scales, or other indicator marks. During the use of the liquid dispensing device 100, the code disk 7 rotates to count. When the number of dispensings reaches a preset value and the locking mechanism 4 triggers the locking, the clearance part 72 is located directly below the locking member 41, allowing the locking member 41 to move downward to the first locking position, thus achieving locking. When liquid aspiration is triggered after unlocking, the code disk 7 rotates until the limiting part 71 is located directly below the locking member 41. The limiting part 71 restricts the locking member 41 from moving downward to the first locking position, preventing the locking member 41 from locking the trigger member 32 in the first locking position during the use of the new container assembly 1.

[0137] Furthermore, such as Figure 17 As shown, the end face of the code disk 7 facing the locking member 41 forms a limiting part 71, and the end face has a notch, which forms a clearance part 72.

[0138] In one embodiment, when a new container assembly 1 is loaded, the liquid dispensing device 100 rotates the code disk 7 to the initial counting position by an air spray operation. In this way, the code disk 7 rotates to the position where the limiting part 71 is below the locking member 41. The limiting part 71 restricts the locking member 41 from moving downward to the first locking position, so as to prevent the locking member 41 from locking the trigger 32 in the first locking position during the use of the new container assembly 1.

[0139] Furthermore, the code disk 7 is mounted on the trigger member 32. When the code disk 7 and the trigger member 32 are in a mating state, the trigger member 32 can drive the code disk 7 to rotate for counting. When the code disk 7 and the trigger member 32 are not in a mating state, the trigger member 32 can rotate independently of the code disk 7.

[0140] Specifically, such as Figure 10 , Figure 17 and Figure 18As shown, the trigger 32 has an elastic arm 328, which has a pawl structure 3281 and an abutment protrusion 3282. The pawl structure 3281 and the abutment protrusion 3282 are spaced apart in a first direction. The inner wall of the first housing 81 has a second annular groove 814, and the second annular groove 814 has a recess 8141. The inner wall of the code disk 7 has a ratchet structure 73. The elastic arm 328 extends partially into the interior of the code disk 7, and the pawl structure 3281 and the ratchet structure 73 are radially opposite each other in the code disk 7. When the abutment protrusion 3282 extends into the recess 8141, the elastic arm 328 is in its initial state, the pawl structure 3281 and the ratchet structure 73 are engaged, and the two are in a cooperative state. The code disk 7 will rotate with the trigger 32 to perform counting. When the trigger 32 rotates until the abutment protrusion 3282 extends into the second annular groove 814, the inner wall of the second annular groove 814 presses radially inward against the abutment protrusion 3282, causing the elastic arm 328 to deform and the pawl structure 3281 to move away from the ratchet structure 73. At this time, the pawl structure 3281 and the ratchet structure 73 are in an uncoordinated state, and the code disk 7 will not rotate with the trigger 32.

[0141] In one embodiment, when the liquid guiding element 21 has finished absorbing liquid and the number of dispensing times has not reached a preset value, the locking mechanism 4 locks the trigger 32, which can prevent the user from continuing to rotate the trigger 32 after the liquid guiding element 21 has finished absorbing liquid and thus accidentally triggering liquid dispensing.

[0142] In one implementation, such as Figure 12 and Figure 17 As shown, the locking mechanism 4 includes a locking component 41. The trigger 32 is provided with a first limiting structure 323 and a second limiting structure 322. The second limiting structure 322 and the first limiting structure 323 are sequentially distributed along the circumference of the trigger 32 and are staggered in the downward direction. When the liquid guiding element 21 completes liquid absorption and the number of dispensing operations has not reached a preset value, the locking component 41 moves downward, and the trigger 32 rotates until the second limiting structure 322 is directly below the locking component 41. The locking component 41 moves downward to lock onto the second limiting structure 322, thereby locking the trigger 32. At this time, the locking component 41 is in the second locked position. When liquid absorption is triggered after the number of dispensing operations reaches the preset value, the code disk 7 rotates until the clearance part 72 is below the locking component 41. The locking component 41 moves downward, and the trigger 32 rotates until the first limiting structure 323 is directly below the locking component 41. The locking component 41 moves downward to lock onto the first limiting structure 323, thereby locking the trigger 32. At this time, the locking component 41 is in the first locked position.

[0143] Furthermore, when the locking component 41 is locked to the first limiting structure 323, pressing the button 92 causes the auxiliary component 6 to rotate at a certain angle, disengaging the second stop surface 613 from the third stop surface 3122. This allows the retaining component 31 to move upward and push the locking component 41 away from the second locked position. When the number of uses reaches a preset value, the trigger 32 will rotate at a certain angle to trigger the locking component 41 to lock to the first limiting structure 323. At this time, the first guide slope 81 and the second guide slope 3111 engage with each other. In addition, since the trigger 32 cannot continue to rotate, the auxiliary component 6 cannot rotate either, thus preventing the button 92 from being pressed to unlock, thereby limiting the further use of the spray device 100.

[0144] Furthermore, the locking component 41 and the second limiting structure 322 are locked together by a snap-fit ​​connection, resulting in a simple structure.

[0145] Furthermore, the locking component 41 and the first limiting structure 323 are locked together by a snap-fit ​​connection, resulting in a simple structure.

[0146] In one implementation, such as Figure 15 , Figure 17 and Figure 18 As shown, the locking mechanism 4 includes a second reset elastic member 42, and the locking component 41 includes a locking structure 411 and a third abutment portion 412. The inner wall of the first housing 81 is provided with a first fixing post 813, and the locking component 41 is provided with a second fixing post 414. One end of the second reset elastic member 42 is sleeved on the first fixing post 813, and the other end is sleeved on the second fixing post 414. When the liquid dispensing device 100 is in its initial state, under the elastic force of the second reset elastic member 42, the third abutment portion 412 abuts downward against the retaining member 31 and remains stationary. Preferably, the second reset elastic member 42 is a spring.

[0147] When the retaining member 31 moves downward, since the retaining member 31 moves away from the third abutment portion 412, the locking member 41 can move downward under the elastic force of the second reset elastic member 42. During this stage, the third abutment portion 412 still abuts against the retaining member 31. Figure 12 and Figure 17 As shown, the trigger member 32 is provided with an abutment surface 325. When the locking member 41 moves downward until the lower end face of the locking structure 411 abuts against the abutment surface 325 of the trigger member 32, the locking member 41 stops, and the retaining member 31 continues to move downward and disengage from the locking structure 411. The trigger member 32 rotates until the locking member 41 is locked in the second limiting structure 322. When the nozzle 221 of the trigger distribution structure 22 discharges liquid, the retaining member 31 pushes the locking member 41 upward to unlock and reset during the upward reset process, and the second reset elastic member 42 is compressed.

[0148] Furthermore, such as Figure 17 and Figure 18 As shown, the first housing 81 is provided with a guide groove 811 extending in a first direction. The locking member 41 is movably engaged with the guide groove 811, and the locking member 41 is restricted from rotating by the guide groove 811. That is, the locking member 41 can only move in the downward or upward direction.

[0149] Furthermore, such as Figure 17 As shown, the locking mechanism 4 is provided with a fourth abutment part 413. The locking structure 411 and the fourth abutment part 413 are spaced apart in the downward direction. When the number of distributions does not reach the preset value, the limiting part 71 is located below the fourth abutment part 413 and the two are in opposite positions. When the locking structure 411 moves downward to abut against the abutment surface 325, as the trigger member 32 continues to rotate, the second limiting structure 322 will rotate to be located directly below the locking structure 411. At this time, the limiting part 71 abuts against the fourth abutment part 413 upward, preventing the locking member 41 from moving downward, thereby preventing the locking structure 411 from moving downward and locking it against the second limiting structure 322, thus avoiding triggering the lock. When the trigger 32 continues to rotate until the first limiting structure 323 is directly below the locking structure 411, since the second limiting structure 322 is higher than the first limiting structure 323, there is a gap between the fourth abutment part 413 and the limiting part 71, and the limiting part 71 will not interfere with the locking of the locking structure 411 and the second limiting structure 322.

[0150] Of course, the fourth abutment part 413 may not be provided. When the first limiting structure 323 is located directly below the locking structure 411, the limiting part 71 abuts against the lower end face of the locking structure 411 to avoid triggering the lock.

[0151] In the above solution, by setting the locking structure 411 and optimizing the cooperation between the locking structure 411 and the trigger 32, locking can be achieved when liquid aspiration is completed and when the number of dispensing operations reaches a preset value. In other words, the locking mechanism 4 can achieve two locking states. Compared with the technical solutions in CN111821546B, which use a blocking part set in the indicator device to achieve locking when liquid aspiration is completed and a locking mechanism to achieve locking when the number of dispensing operations reaches a preset value, this solution has a simpler structure, more stable locking, and does not require replacing the encoder 7 when replacing the old container assembly, resulting in lower operating costs.

[0152] In one implementation, such as Figure 11 and Figure 17 As shown, the locking structure 411 is a protruding structure, and the first limiting structure 323 and the second limiting structure 322 are both slot structures and are set on the upper end face of the trigger member 32, which can prevent the user from forcibly unlocking the locking mechanism 4 from the outside of the trigger member 32 after removing the second housing 82.

[0153] Furthermore, such as Figure 11 , Figure 12 and Figure 17 As shown, the locking component 41 is a block structure. The locking structure 411 includes three protruding ribs. The first limiting structure 323 and the second limiting structure 322 each include three slots. The middle slot of the first limiting structure 323 communicates with the first limiting slot 321 to improve the stability of the locking. Of course, the number of protruding ribs provided in the locking structure 411 is not limited to three; it can also be two, four, or even more. The number of slots provided in the first limiting structure 323 and the second limiting structure 322 is also not limited to three. The number of slots matches the number of protruding ribs in the locking structure 411.

[0154] In one implementation, such as Figure 2 , Figure 12 and Figure 18 As shown, the outer wall of the trigger 32 is provided with an arc-shaped protrusion 326, and the inner wall of the first housing 81 is provided with a first annular groove 812. The arc-shaped protrusion 326 is rotatably engaged in the first annular groove 812.

[0155] In one implementation, such as Figure 12 , Figure 14 and Figure 21 As shown, the trigger 32 is provided with a second limiting protrusion 327, and the second housing 82 is provided with a fourth limiting groove 821. The second limiting protrusion 327 is engaged with the fourth limiting groove 821 to restrict the trigger 32 from rotating relative to the second housing 82.

[0156] In one implementation, such as Figure 12 As shown, there are two second limiting structures 322, which are spaced apart circumferentially along the trigger 32. When the liquid dispensing device 100 is in its initial state, the locking structure 411 is positioned opposite one of the second limiting structures 322. When the liquid guiding element 21 has finished absorbing liquid, the trigger 32 rotates to the next position where the second limiting structure 322 is opposite to and engages with the locking structure 411. Preferably, for ease of design, the two second limiting structures 322 are evenly distributed circumferentially along the trigger 32. Of course, the number of second limiting structures 322 is not limited to two; it can also be one, three, four, or even more.

[0157] Furthermore, such as Figure 12 As shown, the first limiting structure 323 is located in the middle of two adjacent second limiting structures 322 and the three are evenly spaced, which makes it easy for the user to control the rotation angle.

[0158] Furthermore, such as Figure 12As shown, two second limiting structures 322 are sequentially distributed radially on the trigger 32. Thus, when the number of dispensing cycles has not reached the preset value, the user rotates the first housing 81 half a turn; that is, the trigger 32 rotates half a turn, locking the trigger 32 with the locking mechanism 4, completing the liquid absorption of the liquid guiding element 21. Furthermore, when the number of dispensing cycles reaches the preset value and the user rotates the first housing 81 again, the user rotates the first housing 81 a quarter turn; that is, the trigger 32 rotates a quarter turn, locking the trigger 32 with the locking mechanism 4, thus reminding the user to replace the old container assembly 1. It should be understood that to ensure accurate liquid dispensing and metering, after replacing the container assembly 1, it is necessary to discard the liquid several times before normal use.

[0159] In one implementation, such as Figure 12 and Figure 17 As shown, the contact surface 325 includes a first slope 3251. The first slope 3251 and the first limiting structure 323 are connected in sequence in the rotation direction of the trigger 32. The first slope 3251 is used to guide the first limiting structure 323 to move away from the locking structure 411. Specifically, when the number of dispensing operations does not reach the preset value and liquid aspiration is triggered, the locking component 41 moves downward until the lower end face of the locking structure 411 abuts against the abutment surface 325 of the trigger member 32. Then, the trigger member 32 continues to rotate until the first limiting structure 323 is directly below the locking structure 411. Because the limiting part 71 of the code disk 7 abuts against the locking structure 411 upward, the locking structure 411 will not be inserted into the first limiting structure 323. The trigger member 32 continues to rotate. At this time, the lower end face of the locking structure 411 leaves the upper end face of the first limiting structure 323 and abuts against the first slope 3251 until the trigger member 32 rotates until the second limiting structure 322 is directly below the locking structure 411. At this time, the second limiting structure 322 engages with the locking structure 411 and locks the connection. In this solution, by setting the first slope 3251, it is beneficial for the trigger member 32 to rotate smoothly.

[0160] Furthermore, such as Figure 12 and Figure 17As shown, the contact surface 325 includes a second slope 3252. The first slope 3251, the first limiting structure 323, and the second slope 3252 are sequentially connected in the rotation direction of the trigger member 32. The second slope 3252 is used to guide the first limiting structure 323 to move towards the locking structure 411. Specifically, when liquid aspiration is triggered, the locking member 41 moves downward until the lower end face of the locking structure 411 abuts against the second slope 3252. The trigger member 32 continues to rotate, and the second slope 3252 abuts against the lower end face of the locking structure 411 and slides until the first limiting structure 323 rotates to be directly below the locking structure 411. If the number of distributions has not reached the preset value at this time, the trigger member 32 continues to rotate until the first slope 3251 abuts against the lower end face of the locking structure 411. Conversely, if the number of distributions has reached the preset value at this time, the locking structure 411 moves downward under the elastic force of the second reset elastic member 42 until it is engaged with the first limiting structure 323. In this design, the second slope 3252 is provided to facilitate the smooth rotation of the trigger 32.

[0161] Furthermore, since the first limiting structure 323 is located between the two second limiting structures 322, when the number of distributions reaches a preset value, the trigger 32 will rotate a certain angle to trigger the locking structure 411 to lock onto the first limiting structure 323. At this time, the first guide surface 612 and the second guide surface 3121 are in face-to-face cooperation. When the locking structure 411 is disengaged from the first limiting structure 323, the trigger 32 will reverse under the upward elastic force of the first reset elastic member 91. Therefore, by limiting the second slope surface 3252 to protrude from the first limiting structure 323, the trigger 32 can be prevented from reversing after the locking structure 411 is disengaged from the first limiting structure 323.

[0162] The present invention also provides an adjustment mechanism 5, which is disposed between the container assembly 1 and the liquid aspiration trigger assembly 3 of the liquid dispensing device 100. During the first use of the liquid dispensing device 100 after replacing it with a new container assembly 1, the adjustment mechanism 5 causes the structure of the new container assembly 1 to change, making it the old container assembly 1; wherein, the new container assembly 1 can release the locking mechanism 4 from restricting the use of the liquid dispensing device 100, while the old container assembly 1 cannot be released from the restriction.

[0163] Specifically, CN111821546B provides a sprayer in which, after the outer casing is removed, the locking component of the locking device cooperates with the locking spring to lock the inner parts and the upper outer casing, preventing the user from continuing to use the sprayer by directly rotating the inner parts, thus restricting the use of the device. In this solution, the actuator is a columnar structure, and after the outer casing is removed, the user can forcibly unlock it using any columnar structure to continue using the old container. Therefore, those skilled in the art are dedicated to improving the unlocking scheme, attempting to use a new container assembly as the unlocking key. In this way, when the device has been used a preset number of times, it must be replaced with a new container assembly to continue using the device. Furthermore, the old container assembly and the new container assembly must be structurally different; that is, the old container assembly cannot be used as the unlocking key. How to enable the sprayer to automatically change the structure of the new container assembly is a technical problem that those skilled in the art need to solve.

[0164] In this application, by setting an adjustment mechanism, during the first use of the liquid dispensing device 100 after the new container component 1 has been replaced, the adjustment mechanism can change the structure of the new container component 1, so that the new container component 1 becomes the old container component 1. In this way, when the number of times the liquid dispensing device 100 is used reaches a preset value and is restricted from further use by the locking mechanism 4, the liquid dispensing device 100 can only be used after the new container component 1 is replaced and the locking mechanism 4 is unlocked.

[0165] It should be understood that "liquid aspiration completed" in the above text refers to the state of the liquid distribution device 100 when it completes one metering aspiration.

[0166] It should be understood that, in order to ensure that the above transmission relationship can be stably executed, the elastic force of the first reset elastic member 91 is greater than the separation force at the connection between the retaining member 31 and the container assembly 1, the separation force at the connection between the retaining member 31 and the container assembly 1 is greater than the separation force at the connection between the adjustable member 12 and the first mounting part 1121, and the separation force at the connection between the adjustable member 12 and the first mounting part 1121 is greater than the elastic force of the second reset elastic member 42 of the locking mechanism 4.

[0167] It should be understood that the above embodiments are exemplary and are not intended to encompass all possible implementations included in the claims. Various modifications and changes can be made to the above embodiments without departing from the scope of this disclosure. Similarly, the various technical features of the above embodiments can be arbitrarily combined to form other embodiments of the present invention that may not be explicitly described. Therefore, the above embodiments only illustrate several implementations of the present invention and do not limit the scope of protection of this patent.

Claims

1. A liquid dispensing device, characterized in that, The liquid dispensing device (100) includes: Container assembly (1) for containing liquid; Dispensing component (2), which includes a liquid guiding element (21); The liquid aspiration trigger assembly (3) includes a retainer (31) and a trigger (32), wherein the retainer (31) is movably connected to the trigger (32); when the trigger (32) rotates, the retainer (31) drives the liquid guiding element (21) to move in a first direction so that the liquid guiding element (21) aspirates liquid from the container assembly (1); Locking mechanism (4): When the number of times the dispensing component (2) dispenses reaches a preset value, the locking mechanism (4) directly locks the liquid dispensing device (100) or locks the liquid dispensing device (100) during the process of the trigger (32) rotating again to trigger liquid aspiration, so as to restrict the further use of the liquid dispensing device (100); Adjustment mechanism (5), which is located on the side of the container assembly (1) facing the retainer (31); When the locking mechanism (4) locks the trigger (32), if the container assembly (1) is replaced, the new container assembly (1) is configured to push the adjustment mechanism (5) to the unlock position to unlock the locking mechanism (4); if the old container assembly (1) is installed, the old container assembly (1) is configured not to push the adjustment mechanism (5) to the unlock position; the new container assembly (1) and the old container assembly (1) are configured with different structures.

2. The liquid dispensing device according to claim 1, characterized in that, The locking mechanism (4) includes a locking component (41). When the number of allocations reaches a preset value, the locking component (41) moves to a first locking position to lock the trigger (32). During the process of the adjustment mechanism (5) moving to the unlock position, the adjustment mechanism (5) pushes the locking component (41) to move away from the first locking position.

3. The liquid dispensing device according to claim 1, characterized in that, During the first triggering of the dispensing component (2) after unlocking, the construction of the new container component (1) changes and becomes the old container component (1).

4. The liquid dispensing device according to claim 3, characterized in that, The container assembly (1) includes a container body (11) and an adjustable component (12), the adjustable component (12) being mounted on the container body (11); wherein, When the adjustable member (12) is in the first position, the container assembly (1) is a new container assembly (1); when the adjustable member (12) is in the second position, the container assembly (1) is an old container assembly (1), and the first position and the second position are distributed sequentially along the first direction.

5. The liquid dispensing device according to claim 4, characterized in that, The container body (11) includes a first mounting part (1121). When the container assembly (1) is not activated, the adjustable member (12) is detachably connected to the first mounting part (1121), and at this time, the adjustable member (12) is in the first position; When a new container assembly (1) is inserted along the second direction, the adjustable member (12) abuts against the adjusting mechanism (5) and pushes the adjusting mechanism (5) to move to the unlocked position, the first direction and the second direction being opposite; During the first triggering of the dispensing component (2) after unlocking, the adjustable member (12) disengages from the first mounting part (1121) and moves to the second position; When the adjustable member (12) is in the second position, the adjustable member (12) cannot push the adjustment mechanism (5) to the unlock position.

6. The liquid dispensing device according to claim 5, characterized in that, The adjustable element (12) is a plug.

7. The liquid dispensing device according to claim 5, characterized in that, The container body (11) includes a second mounting part (1122); During the first triggering of the dispensing component (2) after unlocking, the adjustable member (12) disengages from the first mounting part (1121) and moves to be connected to the second mounting part (1122). At this time, the adjustable member (12) is in the second position.

8. The liquid dispensing device according to claim 7, characterized in that, The adjustable member (12) is connected to the first mounting part (1121) and / or the second mounting part (1122) by means of fastening, snapping, or adsorption.

9. The liquid dispensing device according to claim 7, characterized in that, The container body (11) includes a body (111) and a cover (112), the cover (112) being connected to the body (111); the cover (112) has openings at both ends, and the first mounting part (1121) and the second mounting part (1122) are disposed at the cover (112).

10. The liquid dispensing device according to claim 5, characterized in that, The liquid dispensing device (100) includes an auxiliary component (6), and the adjusting mechanism (5) includes a first pusher (51). The auxiliary component (6) and the first pusher (51) are distributed sequentially along the first direction. During the first triggering of liquid dispensing after unlocking, the retaining member (31) drives the container assembly (1) and the liquid guiding element (21) to move along the second direction, the adjustable member (12) pushes the first pusher (51) to move, and under the pressure of the auxiliary member (6), the adjustable member (12) disengages from the first mounting part (1121) and moves to the second position.

11. The liquid dispensing device according to claim 10, characterized in that, The adjustment mechanism (5) includes a second pusher (52) which is movably connected to the trigger (32); the first pusher (51) pushes the second pusher (52) to move in the second direction to unlock the locking mechanism (4).

12. The liquid dispensing device according to claim 11, characterized in that, The second pusher (52) is movably connected to the trigger (32) along the first direction or the second direction.

13. The liquid dispensing device according to claim 11, characterized in that, The trigger (32) is sleeve-shaped, the first pusher (51) is located inside the trigger (32), and the locking mechanism (4) is located outside the trigger (32).

14. The liquid dispensing device according to claim 13, characterized in that, The trigger (32) is provided with a first limiting groove (321), and the second pusher (52) includes an unlocking part (521), a connecting part (522) and a first abutting part (523) connected in sequence. The connecting part (522) is movably engaged with the first limiting groove (321). The first pusher (51) pushes the first abutting part (523) so that the unlocking part (521) pushes the locking mechanism (4) in the second direction.

15. The liquid dispensing device according to any one of claims 10-14, characterized in that, The first pusher (51) includes a limiting rib (511), and the retainer (31) is provided with a through hole (311). The limiting rib (511) is movably inserted into the through hole (311). The through hole (311) and the limiting rib (511) are shaped to restrict the first pusher (51) from rotating.

16. The liquid dispensing device according to claim 15, characterized in that, The adjustment mechanism (5) includes a second pusher (52); the first pusher (51) includes a first extension arm (512), the first extension arm (512) is provided with a second abutment (5121), the second abutment (5121) is used to push the second pusher (52) to move in the second direction to unlock the locking mechanism (4).

17. The liquid dispensing device according to claim 2, characterized in that, The liquid dispensing device (100) includes a counting dial (7) which has a limiting part (71) and a clearance part (72). When the number of allocations reaches a preset value and the locking is triggered, the locking component (41) and the yielding part (72) are positioned opposite each other in the first direction, and the yielding part (72) is used to allow the locking component (41) to move to the first locking position; When liquid aspiration is triggered after unlocking, the code disk (7) rotates until the limiting part (71) and the locking part (41) are opposite each other in the first direction. The limiting part (71) is used to restrict the locking part (41) from moving to the first locking position.

18. The liquid dispensing device according to claim 17, characterized in that, When a new container assembly (1) is loaded, the liquid dispensing device (100) rotates the code disk (7) to the initial counting position by an air spray operation.

19. The liquid dispensing device according to claim 18, characterized in that, The code disk (7) is fitted onto the trigger (32); When the code disk (7) and the trigger (32) are in a cooperative state, the trigger (32) can drive the code disk (7) to rotate for counting; When the code disk (7) and the trigger (32) are not in a coordinated state, the trigger (32) can rotate independently of the code disk (7).

20. The liquid dispensing device according to any one of claims 10-14, characterized in that, The auxiliary component (6) is provided with a first guide portion (61), and the retaining component (31) is provided with a second guide portion (312); the first guide portion (61) and the second guide portion (312) cooperate to guide the retaining component (31) to move relative to the triggering component (32) in the first direction.

21. The liquid dispensing device according to any one of claims 1-14, characterized in that, When the liquid guiding element (21) completes liquid absorption and the number of dispensing times has not reached the preset value, the locking mechanism (4) locks the trigger element (32).

22. The liquid dispensing device according to claim 21, characterized in that, The locking mechanism (4) includes a locking component (41), and the trigger (32) is provided with a first limiting structure (323) and a second limiting structure (322). The first limiting structure (323) and the second limiting structure (322) are distributed sequentially along the circumference of the trigger (32) and are staggered along the first direction. When the number of allocations reaches a preset value and locking is triggered, the locking component (41) moves along the first direction and locks itself to the first limiting structure (323). When the number of allocations fails to reach the preset value and a locking is triggered, the locking component (41) moves along the first direction and locks itself to the second limiting structure (322).

23. The liquid dispensing device according to claim 22, characterized in that, When the retainer (31) moves in the second direction to reset, the retainer (31) pushes the locking member (41) away from the second limiting structure (322) to unlock; wherein the first direction and the second direction are opposite.

24. An adjusting mechanism for a liquid dispensing device (100), characterized in that, The adjustment mechanism (5) is configured between the container assembly (1) and the liquid aspiration trigger assembly (3) of the liquid dispensing device (100). The container assembly (1) is used to contain liquid. The liquid aspiration trigger assembly (3) includes a retainer (31) for driving the liquid guiding element (21) of the liquid dispensing device (100) to move in a first direction so that the liquid guiding element (21) draws liquid from the container assembly (1). During the first use of the liquid dispensing device (100) after the new container assembly (1) has been replaced, the adjustment mechanism (5) causes the construction of the new container assembly (1) to change and become the old container assembly (1); wherein the new container assembly (1) can release the locking mechanism (4) from restricting the use of the liquid dispensing device (100), while the old container assembly (1) cannot release the restriction.

25. The adjusting mechanism according to claim 24, characterized in that, During the first triggering of the dispensing component (2) of the liquid dispensing device (100) after the replacement with the new container component (1), the regulating mechanism (5) changes the new container component (1) back to the old container component (1).

26. The adjusting mechanism according to claim 25, characterized in that, The container assembly (1) includes a connected container body (11) and an adjustable component (12). During the first triggering of the dispensing component (2) after replacing with a new container component (1), the adjusting mechanism (5) causes the adjustable member (12) to move from a first position to a second position. When the adjustable member (12) is in the first position, the container component (1) is a new container component (1); when the adjustable member (12) is in the second position, the container component (1) is the old container component (1). The first position and the second position are distributed sequentially along a first direction.

27. The adjusting mechanism according to claim 26, characterized in that, The adjustment mechanism (5) includes a first pusher (51), which pushes the adjustable member (12) from a first position to a second position during the first triggering of the dispensing component (2) to dispense liquid.

28. The adjusting mechanism according to claim 27, characterized in that, The adjustment mechanism (5) includes a second pusher (52). During the loading of a new container assembly (1), the container assembly (1) pushes the first pusher (51), and the first pusher (51) pushes the second pusher (52) to move. The second pusher (52) releases the locking mechanism (4) from restricting the use of the liquid dispensing device (100).

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