Spraying device

Abstract

The present application relates to a kind of injection devices, the injection device includes: container, to hold liquid;Injection assembly, including liquid delivery member and injection structure;Actuating assembly, including holder and actuating member, the holder is movably connected to the actuating member;When the actuating member rotates, the holder drives the liquid delivery member to move in the first direction, so that the liquid delivery member is absorbed from the container;First housing, to hold the injection structure, the first housing is formed between the actuating member cavity;Locking assembly, in the cavity;Wherein, when the use number of the injection assembly reaches the preset value, the locking assembly directly locks the injection device or locks the injection device in the process of actuating member rotating again to trigger the process of suction, to limit the further use of the injection device.The injection device of the present application, locking assembly is arranged in the cavity between the first housing and the actuating member, prevent the user from continuing to use the old container after carrying out the preset number of injection, and the security of locking is high.

Description

Technical Field

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

[0002] Currently, the 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, the soft film bag's tensile strength can resist liquid extraction with repeated use, potentially leading to inaccurate dosing. Therefore, for accurate dosing, 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 medication. Thus, the inhaler needs to limit the number of uses and lock the container to prevent its use. Therefore, the inhaler needs a counting and locking mechanism. When the preset number of uses is reached, the locking mechanism activates to prevent further inaccurate medication delivery.

[0003] A patent with publication number CN111821546B, entitled "Sprayer, Indicator Device, and Container," describes a device that uses an indicator to count items and a locking device that locks the container when the sprayer has been used a preset number of times. The locking device includes a locking component and a locking spring. After the outer casing is removed, it locks the inner component and the upper outer casing. Because the upper outer casing does not rotate, it prevents the inner component from rotating, thus preventing the user from continuing to use the sprayer by directly rotating the inner component. However, after the outer casing is reattached, an actuator on the outer casing pushes the locking component back to the unlocked position, unlocking the sprayer. In this design, the user can easily unlock the locking component and continue using the sprayer using any cylindrical structure, leading to inaccurate drug delivery and a lack of locking security. Summary of the Invention

[0004] In view of the above-mentioned defects in the prior art, the purpose of the present invention is to provide a spraying device in which a locking component is provided in the cavity between the first housing and the actuator to prevent the user from continuing to use the old container after spraying a preset number of times, and the locking is highly secure.

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

[0006] This invention provides a spraying device, the spraying device comprising:

[0007] A container used to hold liquids;

[0008] The jet assembly includes an infusion unit and a jet structure;

[0009] An actuation assembly includes a retainer and an actuator, the retainer being movably connected to the actuator; when the actuator rotates, the retainer drives the infusion unit to move in a first direction, so that the infusion unit draws liquid from the container;

[0010] A first housing for accommodating the jetting structure, wherein a cavity is formed between the first housing and the actuator;

[0011] A locking assembly located within the cavity;

[0012] When the number of uses of the spraying component reaches a preset value, the locking component directly locks the spraying device or locks the spraying device during the process of the actuator rotating again to trigger liquid aspiration, so as to restrict the further use of the spraying device.

[0013] Preferably, when the number of times the spraying assembly is used reaches a preset value, the locking assembly directly locks the actuator or locks the actuator during the process of the actuator rotating again to trigger liquid aspiration.

[0014] Preferably, the injection device includes a second housing detachably connected to the actuator, the second housing being able to drive the actuator to rotate under external force; the cavity and the second housing are separated by the outer wall of the actuator.

[0015] Preferably, the actuator is rotatably connected to the first housing, and the cavity is isolated within the first housing by the actuator.

[0016] Preferably, the spraying device includes a stop portion, and the locking assembly includes a locking structure;

[0017] When the retaining member moves along the first direction, the locking structure moves along the first direction, wherein the stop portion is used to prevent the locking structure from moving to the first locking position;

[0018] When the retaining member moves along the second direction to reset, the locking structure moves along the second direction to reset; wherein the first direction is opposite to the second direction;

[0019] When the number of uses reaches a preset value, the stop portion retracts, so that the locking structure can move along the first direction to the first locking position to lock the actuator.

[0020] Preferably, when the locking structure moves to the first locking position, the locking structure engages with the actuator to restrict the rotation of the actuator.

[0021] Preferably, the actuator is provided with a first limiting structure and an abutment surface;

[0022] When the number of uses reaches a preset value and liquid aspiration is triggered again, the locking structure moves along the first direction to abut against the abutment surface. After the actuator rotates to the position where the first limiting structure and the locking structure are opposite, the locking structure continues to move along the first direction to engage with the first limiting structure.

[0023] Preferably, the locking assembly includes a locking element and a first elastic member, the locking element including a locking structure and a first abutting portion;

[0024] When the spraying device is in the initial state, under the elastic force of the first elastic member, the first abutting part abuts against the retaining member along the first direction;

[0025] When the retaining member moves along the first direction, the locking element moves along the first direction under the elastic force of the first elastic member.

[0026] Preferably, the first housing is provided with a guide groove extending along the first direction, and the locking element is movably engaged with the guide groove.

[0027] Preferably, the injection device includes a counting disk sleeved on the outer periphery of the actuator, and the end face of the counting disk facing the locking assembly constitutes the stop portion.

[0028] Preferably, the locking assembly has a second abutment portion, the locking structure and the second abutment portion are spaced apart along the first direction, and the stop portion and the second abutment portion are positioned opposite each other in the first direction.

[0029] Preferably, the counting disk has a notch at one end facing the locking component. When the number of uses reaches a preset value, the counting disk rotates until the notch and the second abutment are opposite each other in the first direction, so that the locking structure can move to the first locking position.

[0030] Preferably, when the infusion unit has finished aspirating the fluid and the number of uses has not reached a preset value, the locking component locks the actuating component.

[0031] Preferably, the locking component includes a locking structure. When the number of uses has not reached a preset value and liquid aspiration is triggered, the locking structure moves along the first direction. When the infusion device completes liquid aspiration, the locking structure moves to a second locking position to lock the actuator.

[0032] The second locking position and the first locking position are offset from each other along the first direction.

[0033] Preferably, when the locking structure moves to the second locking position, the locking structure engages with the actuator to restrict the rotation of the actuator.

[0034] Preferably, the actuator is provided with a second limiting structure and an abutment surface;

[0035] When the number of uses has not reached the preset value and liquid aspiration is triggered, the locking structure moves along the first direction to abut against the abutment surface, the actuator rotates to the position of the second limiting structure opposite to the locking structure, and the locking structure continues to move along the first direction to engage with the actuator.

[0036] Preferably, when the retaining member moves along the second direction to reset, the retaining member pushes the locking structure away from the second locking position to unlock.

[0037] Preferably, the spraying device includes a button;

[0038] When the locking structure locks the actuator in the first locking position, the retaining member cannot be moved by pressing the button.

[0039] When the locking structure locks the actuator in the second locking position, pressing the button can cause the retaining member to move in the second direction.

[0040] Preferably, the number of the second limiting structures is at least two, which are spaced apart along the circumference of the actuator;

[0041] When the injection device is in the initial state, the locking structure is positioned opposite to one of the second limiting structures;

[0042] When the infusion device completes its suction, the locking structure engages with the next second limiting structure.

[0043] Preferably, the actuator is provided with a first limiting structure, which is used to cooperate with the locking structure located in the first locking position to achieve locking; the first limiting structure is located between two adjacent second limiting structures.

[0044] Preferably, the contact surface includes a first slope, and the first slope and the first limiting structure are sequentially connected in the rotation direction of the actuator. The first slope is used to guide the first limiting structure to move away from the locking structure.

[0045] Preferably, the contact surface includes a second slope, the first limiting structure and the second slope are sequentially connected in the rotation direction of the actuator, the second slope is used to guide the first limiting structure to move toward the locking structure, and the second slope protrudes from the first limiting structure to prevent the actuator from reversing after the locking structure disengages from the first limiting structure.

[0046] The present invention has the following technical effects:

[0047] This invention provides a spraying device that, by incorporating a locking component, prevents a user from continuing to use an old container after a preset number of sprays, thus ensuring the accuracy of the spray dosage. Furthermore, by positioning the locking component within the cavity between the first housing and the actuator, the actuator prevents the user from accessing the locking component using other structures or tools, thereby increasing the difficulty of forced unlocking. This prevents the user from forcibly unlocking the device, forcing them to replace the container to continue using it, thus improving the security performance of the locking mechanism. Attached Figure Description

[0048] Figure 1 This is a cross-sectional view of the spraying device of the present invention;

[0049] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0050] Figure 3 This is a partial structural cross-sectional view of the injection device of the present invention. Figure 1 ;

[0051] Figure 4 for Figure 3 Enlarged view at point B in the middle;

[0052] Figure 5 This is a partial structural cross-sectional view of the injection device of the present invention. Figure 2 ;

[0053] Figure 6 for Figure 5 Enlarged view at point C;

[0054] Figure 7 This is an exploded cross-sectional view of the injection device of the present invention;

[0055] Figure 8 for Figure 7 Enlarged view at point D;

[0056] Figure 9 This is a three-dimensional structural schematic diagram of the actuator of the present invention;

[0057] Figure 10 This is a three-dimensional structural diagram of the first housing of the present invention;

[0058] Figure 11 This is a three-dimensional structural diagram of the retaining member of the present invention;

[0059] Figure 12 This is a three-dimensional structural diagram of the guide component of the present invention;

[0060] Figure 13 This is a three-dimensional structural diagram of the second housing of the present invention.

[0061] Explanation of reference numerals in the attached figures

[0062] 100. Spraying device;

[0063] 1. Container;

[0064] 2. Spray assembly; 21. Infusion unit; 22. Spray structure; 221. Nozzle; 222. Pressure chamber; 223. Pump body;

[0065] 3. Actuating component; 31. Holding member; 311. Protrusion; 3111. Second guide ramp; 3112. Second abutting plane; 312. Second slot; 32. Actuating member; 321. First limiting structure; 322. Abutting surface; 3221. First slope; 3222. Second slope; 323. Second limiting structure; 324. Arc-shaped protrusion; 325. First engaging protrusion; 326. Second engaging protrusion;

[0066] 41. First housing; 411. Guide groove; 412. Annular groove; 413. First mounting post;

[0067] 42. Second housing; 421. First slot;

[0068] 5. Cavity;

[0069] 6. Locking assembly; 61. Locking element; 611. Locking structure; 612. First abutment part; 613. Second abutment part; 614. Second mounting post; 62. First elastic element;

[0070] 7. Counting disc; 71. Stop; 72. Notch;

[0071] 8. Guide component; 81. First guide ramp; 82. First abutment plane; 83. Extension;

[0072] 91. Second elastic element;

[0073] 92. Button. Detailed Implementation

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] In this invention, "upper" and "lower" are both used in the sense of... Figure 1 The markings in the text shall prevail.

[0080] The following is based on Figures 1 to 13 The spraying device of the present invention will be described in detail.

[0081] In this embodiment, such as Figure 1 and Figure 2 As shown, the spraying device 100 includes a container 1, a spraying assembly 2, an actuating assembly 3, a first housing 41, and a locking assembly 6. The container 1 is used to contain liquid. The spraying assembly 2 includes a liquid delivery component 21 and a spraying structure 22. The spraying structure 22 includes a nozzle 221, a pressure chamber 222, and a pump body 223. One end of the liquid delivery component 21 is inserted into the container 1, and the other end is movably inserted into the pump body 223 of the spraying structure 22. In this way, the liquid delivery component 21 can draw liquid from the container 1 into the pressure chamber 222 of the spraying structure 22 for temporary storage through reciprocating motion relative to the spraying structure 22, and then spray it out through the nozzle 221. The first housing 41 is used to house the spraying structure 22. The spraying structure 22 can be directly or indirectly mounted on the first housing 41. A cavity 5 is formed between the first housing 41 and the actuating assembly 32, and the locking assembly 6 is located in the cavity 5. The actuation assembly 3 includes a retainer 31 and an actuator 32. The retainer 31 is movably connected to the actuator 32. When the actuator 32 rotates, the retainer 31 drives the infusion unit 21 to move in a first direction so that the infusion unit 21 draws liquid from the container 1.

[0082] When the number of uses of the spray assembly 2 reaches a preset value, the locking assembly 6 directly locks the spray device 100. Alternatively, when the number of uses of the spray assembly 2 reaches the preset value and the user activates the spray device 100 again, the locking assembly 6 locks the spray device 100 during the process of the actuator 32 rotating again to trigger liquid aspiration, thereby restricting further use of the spray device 100.

[0083] By adopting the above scheme, a locking component 6 is provided to prevent the user from continuing to use the old container 1 after a preset number of sprays. If the device is a replaceable bottle, it can also remind the user to replace the container 1 to ensure the accuracy of the spray dosage. Furthermore, by placing the locking component 6 in the cavity 5 between the first housing 41 and the actuator 32, the actuator 32 can prevent the user from accessing the locking component 6 using other structures or tools, thereby increasing the difficulty of forcibly unlocking the device or even preventing the user from forcibly unlocking it. In this way, the user must replace the container 1 with a new one and unlock it using the unlocking component (not shown in the figure) provided in the spraying device in order to continue using the spraying device 100, thus improving the safety performance of the locking mechanism.

[0084] It should be understood that the unlocking component provided in the spraying device 100 can be any structure capable of unlocking, a structure directly integrated into the new container 1, or an additional component provided in the spraying device 100 that requires the insertion of the new container 1 to trigger unlocking.

[0085] In one embodiment, when the number of uses of the spraying assembly 2 reaches a preset value, the locking assembly 6 directly locks the actuator 32 or locks the actuator 32 during the process of the actuator 32 rotating again to trigger liquid aspiration.

[0086] In one embodiment, when the retainer 31 drives the infusion unit 21 to move in the second direction, the spray structure 22 sprays, wherein the first direction is opposite to the second direction, and the suction and spraying are carried out separately, which is beneficial for supplying accurate dosage.

[0087] In one implementation, such as Figure 1 As shown, the infusion unit 21 is fixed to the retainer 31, and the container 1 is detachably connected to the retainer 31 (e.g., the two are fastened together), so that the container 1, the infusion unit 21 and the retainer 31 can move synchronously.

[0088] In one embodiment, the direction of downward movement of the retaining member 31 is the first direction, and the direction of upward movement is the second direction. Of course, the direction of movement of the retaining member 31 is not limited to this, and it can also move in other directions such as front-back or left-right.

[0089] The following text will take downward as the first direction and upward as the second direction as an example for specific explanation.

[0090] In one implementation, such as Figures 1 to 3 , Figure 11 and Figure 12 As shown, the spraying device 100 includes a guide member 8, which has a first guiding slope 81 and a first abutting plane 82. The inner wall of the retaining member 31 has a protrusion 311, which has a second guiding slope 3111 and a second abutting plane 3112. The upper part of the retaining member 31 is sleeved on the outer periphery of the guide member 8. Figure 6 , Figure 9 and Figure 11 As shown, the inner wall of the actuator 32 is provided with a second engaging protrusion 326, and the outer wall of the retainer 31 is provided with a second engaging groove 312. The second engaging groove 312 extends along the first direction, and the second engaging protrusion 326 is movably engaged with the second engaging groove 312. Figure 1 As shown, a second elastic member 91 is fitted around the outer periphery of the container 1. One end of the second elastic member 91 abuts upward against the bottom wall of the retaining member 31. The second elastic member 91 is used to provide a resetting force for the retaining member 31. Figure 1As shown, the actuator 32 is sleeve-shaped, the second elastic member 91 is located inside the actuator 32, and the bottom of the container 1 extends out of the actuator 32 to facilitate the user's grip to pull out the old container 1. Figures 1 to 3 , Figure 6 , Figure 11 and Figure 12 As shown, when the actuator 32 drives the retainer 31 to rotate to trigger liquid aspiration, the first guide slope 81 and the second guide slope 3111 cooperate. The second guide slope 3111 slides along the first guide slope 81. At the same time, the second snap-fit ​​protrusion 326 cooperates with the second snap-fit ​​groove 312, so that the retainer 31 can rotate synchronously with the actuator 32 and move downward relative to the actuator 32. During this process, the second elastic member 91 is compressed. When the retaining member 31 moves downwards until the second guide slope 3111 disengages from the first guide slope 81, under the rebound force of the second elastic member 91, the second abutting plane 3112 abuts upwards against the first abutting plane 82. At this time, the retaining member 31, the container 1, and the infusion member 21 are in the first extreme position. The infusion member 21 completes the aspiration. In the first extreme position, because the locking component 6 moves to the second locking position to lock the actuator 32, and because the second abutting plane 3112 abuts upwards against the first abutting plane 82, the retaining member 31 cannot move upwards.

[0091] like Figure 1 , Figure 3 and Figure 12 As shown, the spraying device 100 is equipped with a button 92, which is movably mounted on the first housing 41. The guide member 8 is provided with an extension 83. When the infusion unit 21 completes liquid aspiration and needs to trigger spraying, the button 92 is pressed. The button 92 pushes the extension 83, causing the guide member 8 to rotate at a certain angle, thereby causing the first abutting plane 82 to disengage from the second abutting plane 3112. At this time, under the rebound force of the second elastic member 91, the retaining member 31 drives the container 1 and the infusion unit 21 to move along the second locking protrusion 326 of the actuator 32, that is, to move upward to reset, triggering the spraying device 100 to spray. It should be understood that when the number of uses of the spraying component 2 has not reached the preset value, the locking component 6 can be unlocked by the button 92; when the number of uses of the spraying component 2 has reached the preset value, the locking component 6 restricts further use of the spraying device 100, and therefore the locking component 6 cannot be unlocked by the button 92.

[0092] The guide member 8 is rotatably confined within the first housing 41 by a slot and a protrusion engagement, and the rotatable angle of the guide member 8 is limited by restricting the width of the slot. When liquid aspiration is triggered again, the actuator 32 drives the retainer 31 to rotate, as... Figure 11 and Figure 12As shown, since the second guide slope 3111 pushes the first guide slope 81, the retaining member 31 and the guide member 8 rotate synchronously. At this time, the guide member 8 rotates and pushes the button 92 to reset. The retaining member 31 only rotates and does not move because the guide member 8 rotates synchronously. When the guide member 8 rotates to a certain angle and can no longer rotate, the retaining member 31 rotates and moves at the same time to trigger liquid aspiration.

[0093] Of course, the guide structure for the upward movement of the retaining member 31 is not limited to the guide member 8. For example, a guide protrusion can be provided on the first housing 41 to guide the movement of the retaining member 31. When the liquid aspiration is completed, the retaining member 31 is released from the limit of the guide protrusion and reset by pressing the button 92.

[0094] In one embodiment, the locking component 6 is non-rotatably connected to the first housing 41, through which the locking component 6 is mounted and rotation of the locking component 6 is restricted.

[0095] In one implementation, such as Figure 1 and Figure 3 As shown, the injection device 100 includes a second housing 42, which is detachably connected to the actuator 32 (e.g., snap-fit). The first housing 41 and the second housing 42 together form the outer housing outline of the injection device 100. The second housing 42 rotates under external force, causing the actuator 32 to rotate, thereby triggering the infusion unit 21 to draw in liquid. Figure 1 As shown, the cavity 5 and the second housing 42 are separated by the outer wall of the actuator 32, so that the tool used by the user cannot pass through the actuator 32 to enter the cavity 5, and the user cannot forcibly unlock it.

[0096] Of course, the second housing 42 can be manually rotated to drive the actuator 32 to rotate, or a driver can be built into the injection device 100 to automatically drive the actuator 32 to rotate.

[0097] Furthermore, the actuator 32 is rotatably connected to the first housing 41 and the two are inseparable. A gap is formed between the inner wall of the end of the first housing 41 and the outer wall of the actuator 32. This gap is configured to isolate the cavity 5 within the first housing 41 by the actuator 32. Preferably, the size of this gap is 0.1mm-0.2mm.

[0098] In one embodiment, the container 1 is a replaceable bottle. When the number of uses reaches a preset value, the second housing 42 is removed first and then the container 1 is replaced. Furthermore, since the locking component 6 locks the actuator 32 after the second housing 42 is removed, the user cannot rotate the actuator 32 and forcibly use the spraying device 100.

[0099] In one implementation, such as Figure 1 and Figure 10As shown, the outer wall of the actuator 32 is provided with an arc-shaped protrusion 324, and the inner wall of the first housing 41 is provided with an annular groove 412. The arc-shaped protrusion 324 is rotatably engaged in the annular groove 412.

[0100] In one implementation, such as Figure 1 , Figure 9 and Figure 13 As shown, the actuator 32 is provided with a first snap-fit ​​protrusion 325, and the second housing 42 is provided with a first snap-fit ​​groove 421. The first snap-fit ​​protrusion 325 snaps into the first snap-fit ​​groove 421 to restrict the actuator 32 from rotating relative to the second housing 42.

[0101] In one implementation, such as Figure 2 , Figure 4 and Figure 6 As shown, the spraying device 100 includes a stop 71, and the locking assembly 6 includes a locking structure 611. When the retaining member 31 moves downward, the locking structure 611 moves downward, wherein the stop 71 is used to prevent the locking structure 611 from moving to the first locking position if the number of uses of the spraying device 100 has not reached a preset value. When the retaining member 31 moves upward to reset, the locking structure 611 moves upward to reset. When the number of uses reaches the preset value, the stop 71 yields, allowing the locking structure 611 to move downward to the first locking position to lock the actuator 32.

[0102] In CN111821546B, when the number of uses reaches a preset value, firstly, the blocking part set inside the indicator device and the driving part set on the bottom wall of the outer shell abut against each other in the axial direction to prevent the indicator device from moving downward and thus prevent the container from moving downward, thereby locking the container. Then, the user needs to remove the outer shell to replace the container. Secondly, after the outer shell is removed, the locking assembly locks the internal components to the upper outer shell, thereby locking the entire device. In this solution, if the user does not remove the outer shell after the container is locked but continues to rotate the outer shell with increased force, it is easy to damage the driving part set on the bottom wall of the outer shell, causing the entire device to be scrapped. In this solution, the locking structure 611 changes position during the movement of the retaining member 31, achieving locking through the position change and directly locking the actuator 32. Compared to the solution in CN111821546B, which requires the removal of the outer shell (equivalent to the second shell 42 in this solution) before its locking component locks the inner part (equivalent to the actuator 32 in this solution), this solution can trigger the locking of the entire device without removing the second shell 42. This prevents the user from rotating the second shell 42 to drive the actuator 32 to rotate, making the locking more stable. Furthermore, after the user removes the second shell 42, it cannot be forcibly unlocked with other tools; a new container 1 must be installed to unlock it.

[0103] Furthermore, when the locking structure 611 moves to the first locking position, the locking structure 611 engages with the actuator 32, thereby restricting the rotation of the actuator 32 through the engagement, resulting in a simple structure.

[0104] Furthermore, such as Figure 4 , Figure 6 , Figure 8 and Figure 9 As shown, the actuator 32 is provided with a first limiting structure 321 and an abutment surface 322. In one specific embodiment, the locking structure 611 is a protruding structure and the first limiting structure 321 is a slot structure. Of course, the locking structure 611 can also be a slot structure and the first limiting structure 321 can be a protruding structure. When the spraying device 100 is in the initial state, the locking structure 611 is in the initial position, located above the first limiting structure 321. When the number of uses reaches the preset value and the suction is triggered again, the actuator 32 rotates so that the retaining member 31 drives the infusion member 21 to rotate and move downward. The locking structure 611 moves downward and stops when it abuts against the contact surface 322. Then, the actuator 32 continues to rotate, and the retaining member 31 drives the infusion member 21 to continue to move downward. When the actuator 32 rotates to the position where the first limiting structure 321 and the locking structure 611 are opposite each other, the locking structure 611 continues to move downward until the locking structure 611 is engaged with the first limiting structure 321. At this time, the actuator 32 cannot rotate, thus locking the device.

[0105] Furthermore, such as Figures 1 to 8 As shown, the locking assembly 6 includes a locking element 61 and a first elastic member 62. The locking element 61 includes a locking structure 611 and a first abutment portion 612. The inner wall of the first housing 41 is provided with a first mounting post 413, and the locking element 61 is provided with a second mounting post 614. One end of the first elastic member 62 is sleeved on the first mounting post 413, and the other end is sleeved on the second mounting post 614. When the spraying device 100 is in the initial state, under the elastic force of the first elastic member 62, the first abutment portion 612 abuts downward against the retaining member 31 and remains stationary. When the retaining member 31 moves downward, since the retaining member 31 moves away from the first abutment portion 612, the locking element 61 can move downward under the elastic force of the first elastic member 62. During this stage, the first abutment portion 612 still abuts against the retaining member 31. When the locking element 61 moves to the point where the lower end face of the locking structure 611 abuts against the upper end face (abutment surface 322) of the actuator 32, the locking element 61 stops, and the retaining member 31 continues to move downward and disengages from the locking structure 611.

[0106] Furthermore, such as Figure 6 and Figure 10As shown, the first housing 41 is provided with a guide groove 411 extending in a first direction. The locking element 61 is movably engaged with the guide groove 411, and the rotation of the locking element 61 is restricted by the guide groove 411. That is, the locking element 61 can only move in the downward or upward direction.

[0107] In one implementation, such as Figure 5 and Figure 9 As shown, the first limiting structure 321 is disposed on the outer periphery of the upper end of the actuator 32, and the locking component 6 is located above the actuator 32, making it more difficult for the user to forcibly unlock the locking component 6.

[0108] In one implementation, such as Figures 2 to 6 As shown, the spraying device 100 includes a counting disk 7, which is sleeved on the outer periphery of the actuator 32. The outer periphery of the counting disk 7 is provided with numerical marks, scales, or other indicator marks. During the use of the spraying device 100, the counting disk 7 rotates to achieve spray counting. The end face of the counting disk 7 facing the locking assembly 6 forms a stop portion 71, which is beneficial for structural compactness.

[0109] Furthermore, such as Figure 6 and Figure 8 As shown, the locking assembly 6 has a second abutment portion 613. The locking structure 611 and the second abutment portion 613 are spaced apart in the downward direction. When the number of uses has not reached a preset value, the stop portion 71 is located below the second abutment portion 613 and the two are positioned opposite each other. When the locking structure 611 moves downward to abut against the abutment surface 322, during the rotation of the actuator 32, the first limiting structure 321 will rotate to be located directly below the locking structure 611. At this time, the stop portion 71 abuts against the second abutment portion 613 upward, preventing the locking element 61 from moving downward, thereby preventing the locking structure 611 from moving downward and locking into the first limiting structure 321, thus avoiding triggering the lock. Of course, the second abutment portion 613 can also be omitted. When the first limiting structure 321 is located directly below the locking structure 611, the stop portion 71 abuts against the lower end surface of the locking structure 611 upward to avoid triggering the lock.

[0110] Furthermore, such as Figure 6 and Figure 8 As shown, the counter 7 has a notch 72 at one end facing the locking component 6. When the number of uses reaches a preset value, the counter 7 rotates until the notch 72 is directly below the second abutment 613. At this time, the second abutment 613 inserts into the notch 72, so that the locking element 61 can move downward. In this way, the locking structure 611 can move to the first locking position and engage with the first limiting structure 321.

[0111] In one embodiment, when the infusion unit 21 has finished aspirating the liquid and the number of uses has not reached a preset value, the locking component 6 locks the actuator component 3, thereby preventing the user from continuing to rotate the actuator component 32 after the infusion unit 21 has finished aspirating the liquid and thus preventing accidental triggering of the spray.

[0112] In one embodiment, when the number of uses has not reached a preset value and the infusion unit 21 has completed aspiration, the locking structure 611 moves downward to a second locking position to lock the actuator 32, thereby preventing the user from continuing to rotate the actuator 32 and accidentally triggering the spray. Wherein, for example... Figure 9 As shown, the second locking position (the position of the second limiting structure 323) and the first locking position (the position of the first limiting structure 321) are offset in the downward direction. The second locking position is higher than the first locking position, and the upper end face of the second limiting structure 323 is higher than the upper end face of the first limiting structure 321. Preferably, the height difference between the two end faces is 1mm-3mm. When the number of uses has not reached the preset value, the locking structure 611 moves downwards to abut against the abutment surface 322. When the actuator 32 rotates to the position where the first limiting structure 321 is directly below the locking structure 611, the stop 71 abuts against the second abutment 613, so the locking structure 611 will not engage with the first limiting structure 321. When the actuator 32 rotates to the position where the second limiting structure 323 is directly below the locking structure 611, the second locking position is higher than the first locking position. At this time, there is a gap between the lower end face of the locking structure 611 and the stop 71 of the counting disk 7. Thus, the locking element 61 can move downwards so that the locking structure 611 engages with the second limiting structure 323 to lock the actuator 32. Figure 6 and Figure 8 As shown, when the number of uses reaches the preset value, the notch 72 is located directly below the second abutment 613, and the locking structure 611 can move to the first locking position and engage with the first limiting structure 321.

[0113] In the above solution, by setting the locking structure 611 and optimizing the cooperation between the locking structure 611 and the actuator 32, locking can be achieved when liquid aspiration is completed and when the number of uses reaches a preset value. In other words, the locking component 6 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 component to achieve locking when the number of uses reaches a preset value, this solution has a simpler structure, more stable locking, and does not require replacing the counting disk 7 when replacing an old container, resulting in lower operating costs.

[0114] Furthermore, when the locking structure 611 moves to the second locking position, the locking structure 611 engages with the actuator 32, thereby restricting the rotation of the actuator 32 through the engagement, resulting in a simple structure.

[0115] Furthermore, such as Figure 6 and Figure 9 As shown, the actuator 32 has a second limiting structure 323 and an abutment surface 322. In one specific embodiment, the locking structure 611 is a protrusion, and the second limiting structure 323 is a slot. Alternatively, the locking structure 611 can be a slot, and the second limiting structure 323 can be a protrusion. When the number of uses has not reached the preset value and liquid aspiration is triggered, the locking structure 611 moves downward to abut against the abutment surface 322, and the actuator 32 rotates until the second limiting structure 323 is opposite to the locking structure 611. The locking structure 611 continues to move downward until it is engaged with the second limiting structure 323.

[0116] Furthermore, such as Figure 6 As shown, when the retaining member 31 moves upward to reset, the retaining member 31 moves upward until the abutting surface 322 abuts against the first abutting part 612 of the locking element 61. Then the retaining member 31 pushes the locking structure 611 upward away from the second locking position, so that the locking structure 611 is released from the second limiting structure 323 and unlocked.

[0117] Furthermore, by pressing button 92, the guide member 8 is rotated by a certain angle, causing the first abutting plane 82 to disengage from the second abutting plane 3112. This allows the retaining member 31 to move upward and push the locking element 61 away from the second locking position. When the locking structure 611 locks the actuator 32 in the first locking position, pressing button 92 cannot cause the retaining member 31 to move, thus limiting the further use of the spraying device 100.

[0118] Furthermore, when the number of uses reaches a preset value, the actuator 32 will rotate a certain angle to trigger the locking structure 611 to lock in the first limit structure 321. At this time, the first guide slope 81 and the second guide slope 3111 cooperate with each other. In addition, since the actuator 32 cannot continue to rotate, the guide 8 cannot rotate either, and thus the button 92 cannot be pressed to unlock.

[0119] In one implementation, such as Figure 9As shown, there are two second limiting structures 323, which are spaced apart circumferentially along the actuator 32. When the injection device 100 is in its initial state, the locking structure 611 is positioned opposite one of the second limiting structures 323. When the infusion unit 21 completes its suction, the actuator 32 rotates until the next second limiting structure 323 is positioned opposite and engaged with the locking structure 611. Preferably, for ease of design, the two second limiting structures 323 are evenly distributed circumferentially along the actuator 32. Of course, the number of second limiting structures 323 is not limited to two; it can be one, three, four, or even more. The number of second limiting structures 323 is determined by the number of first guide ramps 81.

[0120] Furthermore, such as Figure 9 As shown, the first limiting structure 321 is located in the middle of two adjacent second limiting structures 323 and the three are evenly spaced, which makes it easier for the user to control the rotation angle.

[0121] Furthermore, such as Figure 9 As shown, the two second limiting structures 323 are radially distributed along the actuator 32. Thus, when the preset number of uses has not been reached, the user rotates the first housing 41 half a turn; that is, the actuator 32 rotates half a turn, locking the actuator 32, and the infusion unit 21 completes liquid aspiration. Furthermore, when the preset number of uses has been reached, the user rotates the first housing 41 a quarter turn; that is, the actuator 32 rotates a quarter turn, locking the actuator 32, thus reminding the user to replace the old container 1. It should be understood that to ensure accurate spray metering, after replacing the container 1, several spray cycles should be performed before normal use.

[0122] In one implementation, such as Figure 8 and Figure 9 As shown, the locking element 61 is a block structure, the locking structure 611 is a protruding structure and includes three protruding ribs, and the first limiting structure 321 and the second limiting structure 323 are both slot structures and each includes three slots to improve the stability of locking. Of course, the number of protruding ribs provided in the locking structure 611 is not limited to three, but can also be two, four or even more, and the number of slots provided in the first limiting structure 321 and the second limiting structure 323 is not limited to three, but can also be two, four or even more.

[0123] In one implementation, such as Figure 6 and Figure 9As shown, the contact surface 322 includes a first slope 3221. The first slope 3221 and the first limiting structure 321 are connected in sequence in the rotation direction of the actuator 32. The first slope 3221 is used to guide the first limiting structure 321 to move away from the locking structure 611. Specifically, when the number of uses has not reached the preset value and liquid aspiration is triggered, the locking element 61 moves downward until the lower end face of the locking structure 611 abuts against the abutment surface 322 of the actuator 32. Then, the actuator 32 continues to rotate until the first limiting structure 321 is directly below the locking structure 611. Because the stop part 71 of the counting disk 7 abuts against the locking structure 611 upward, the locking structure 611 will not be inserted into the first limiting structure 321. The actuator 32 continues to rotate. At this time, the lower end face of the locking structure 611 leaves the upper end face of the first limiting structure 321 and abuts against the first slope 3221 until the actuator 32 rotates until the second limiting structure 323 is directly below the locking structure 611. At this time, the second limiting structure 323 engages with the locking structure 611 and locks the actuator. In this solution, by setting the first slope 3221, it is beneficial for the actuator 32 to rotate smoothly.

[0124] Furthermore, such as Figure 9 As shown, the contact surface 322 includes a second slope 3222. The first limiting structure 321 and the second slope 3222 are sequentially connected in the rotation direction of the actuator 32. The second slope 3222 is used to guide the first limiting structure 321 to move toward the locking structure 611. Specifically, when liquid aspiration is triggered, the locking element 61 moves downward until the lower end face of the locking structure 611 abuts against the second slope 3222. The actuator 32 continues to rotate, and the second slope 3222 abuts against the lower end face of the locking structure 611 and slides until the first limiting structure 321 rotates to be directly below the locking structure 611. If the number of uses has not reached the preset value at this time, the actuator 32 continues to rotate and the first slope 3221 abuts against the lower end face of the locking structure 611. Conversely, if the number of uses has reached the preset value at this time, the locking structure 611 moves downward under the elastic force of the first elastic element 62 until it is engaged with the first limiting structure 321. In this design, the second slope 3222 is provided to facilitate the smooth rotation of the actuator 32.

[0125] Furthermore, since the first limiting structure 321 is located between the two second limiting structures 323, when the number of uses reaches a preset value, the actuator 32 will rotate a certain angle to trigger the locking structure 611 to lock onto the first limiting structure 321. At this time, the first guide slope 81 and the second guide slope 3111 are in face-to-face cooperation. When a new container 1 is replaced, the locking structure 611 is disengaged from the first limiting structure 321 by the unlocking component in the device. At this time, under the upward elastic force of the second elastic member 91, the actuator 32 reverses. In this solution, by limiting the second slope 3222 to protrude from the first limiting structure 321, the actuator 32 can be prevented from reversing after the locking structure 611 is disengaged from the first limiting structure 321.

[0126] In one implementation, such as Figure 1 As shown, both the first elastic element 62 and the second elastic element 91 are springs, which have a simple structure and are easy to assemble.

[0127] It should be understood that "liquid aspiration completed" in the above text refers to the state of the spray device 100 when it completes one metering aspiration.

[0128] 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 spraying device, characterized in that, The spraying device (100) includes: Container (1), which is used to hold liquid; The jet assembly (2) includes an infusion unit (21) and a jet structure (22); An actuation assembly (3) includes a retainer (31) and an actuator (32), wherein the retainer (31) is movably connected to the actuator (32); when the actuator (32) rotates, the retainer (31) drives the infusion unit (21) to move in a first direction so that the infusion unit (21) draws liquid from the container (1); A first housing (41) for accommodating the jet structure (22) forms a cavity (5) between the first housing (41) and the actuator (32); Locking assembly (6) is located within the cavity (5); When the number of times the spraying component (2) is used reaches a preset value, the locking component (6) directly locks the spraying device (100) or locks the spraying device (100) during the process of the actuator (32) rotating again to trigger liquid aspiration, so as to restrict the further use of the spraying device (100).

2. The spraying device according to claim 1, characterized in that, When the number of uses of the spraying assembly (2) reaches a preset value, the locking assembly (6) directly locks the actuator (32) or locks the actuator (32) during the process of the actuator (32) rotating again to trigger liquid aspiration.

3. The spraying device according to claim 1, characterized in that, The injection device (100) includes a second housing (42) which is detachably connected to the actuator (32). The second housing (42) can drive the actuator (32) to rotate under external force. The cavity (5) and the second housing (42) are separated by the outer wall of the actuator (32).

4. The spraying device according to claim 3, characterized in that, The actuator (32) is rotatably connected to the first housing (41), and the cavity (5) is isolated within the first housing (41) by the actuator (32).

5. The spraying device according to claim 1, characterized in that, The spraying device (100) includes a stop (71), and the locking assembly (6) includes a locking structure (611); When the retaining member (31) moves along the first direction, the locking structure (611) moves along the first direction, wherein the stop (71) is used to prevent the locking structure (611) from moving to the first locking position; When the retaining member (31) moves in the second direction to reset, the locking structure (611) moves in the second direction to reset; wherein the first direction is opposite to the second direction; When the number of uses reaches a preset value, the stop (71) retracts so that the locking structure (611) can move along the first direction to the first locking position to lock the actuator (32).

6. The spraying device according to claim 5, characterized in that, When the locking structure (611) moves to the first locking position, the locking structure (611) engages with the actuator (32) to restrict the rotation of the actuator (32).

7. The spraying device according to claim 6, characterized in that, The actuator (32) is provided with a first limiting structure (321) and an abutment surface (322); When the number of uses reaches a preset value and liquid aspiration is triggered again, the locking structure (611) moves along the first direction to abut against the abutment surface (322). After the actuator (32) rotates to the position where the first limiting structure (321) and the locking structure (611) are opposite each other, the locking structure (611) continues to move along the first direction to engage with the first limiting structure (321).

8. The spraying device according to claim 5, characterized in that, The locking assembly (6) includes a locking element (61) and a first elastic member (62), wherein the locking element (61) includes a locking structure (611) and a first abutting portion (612); When the spraying device (100) is in the initial state, under the elastic force of the first elastic member (62), the first abutting part (612) abuts against the retaining member (31) along the first direction; When the retaining member (31) moves along the first direction, the locking element (61) moves along the first direction under the elastic force of the first elastic member (62).

9. The spraying device according to claim 8, characterized in that, The first housing (41) is provided with a guide groove (411) extending along the first direction, and the locking element (61) is movably engaged with the guide groove (411).

10. The spraying device according to any one of claims 5-9, characterized in that, The spraying device (100) includes a counting disk (7) which is sleeved on the outer periphery of the actuator (32), and the end face of the counting disk (7) facing the locking assembly (6) constitutes the stop portion (71).

11. The spraying device according to claim 10, characterized in that, The locking assembly (6) is provided with a second abutment (613). The locking structure (611) and the second abutment (613) are spaced apart along the first direction. The stop (71) and the second abutment (613) are positioned opposite each other in the first direction.

12. The spraying device according to claim 11, characterized in that, The counting disk (7) has a notch (72) at one end facing the locking component (6). When the number of uses reaches a preset value, the counting disk (7) rotates until the notch (72) and the second abutment (613) are opposite each other in the first direction, so that the locking structure (611) can move to the first locking position.

13. The spraying device according to any one of claims 1-9, characterized in that, When the infusion unit (21) completes the aspiration and the number of uses has not reached the preset value, the locking component (6) locks the actuation component (3).

14. The spraying device according to any one of claims 5-9, characterized in that, The locking component (6) includes a locking structure (611). When the number of uses does not reach a preset value and liquid aspiration is triggered, the locking structure (611) moves along the first direction. When the infusion unit (21) completes liquid aspiration, the locking structure (611) moves to the second locking position to lock the actuator (32). The second locking position and the first locking position are offset from each other along the first direction.

15. The spraying device according to claim 14, characterized in that, When the locking structure (611) moves to the second locking position, the locking structure (611) engages with the actuator (32) to restrict the rotation of the actuator (32).

16. The spraying device according to claim 15, characterized in that, The actuator (32) is provided with a second limiting structure (323) and an abutment surface (322); When the number of uses does not reach the preset value and liquid aspiration is triggered, the locking structure (611) moves along the first direction to abut against the abutment surface (322), the actuator (32) rotates to the position of the second limiting structure (323) opposite to the locking structure (611), and the locking structure (611) continues to move along the first direction to engage with the actuator (32).

17. The spraying device according to claim 15, characterized in that, When the retaining member (31) moves in the second direction to reset, the retaining member (31) pushes the locking structure (611) away from the second locking position to unlock.

18. The spraying device according to claim 17, characterized in that, The spraying device (100) includes a button (92); When the locking structure (611) locks the actuator (32) in the first locking position, the retaining member (31) cannot be moved by pressing the button (92); When the locking structure (611) locks the actuator (32) in the second locking position, pressing the button (92) can cause the retaining member (31) to move in the second direction.

19. The spraying device according to claim 16, characterized in that, The number of the second limiting structures (323) is at least two, which are spaced apart along the circumference of the actuator (32); When the injection device (100) is in the initial state, the locking structure (611) is positioned opposite one of the second limiting structures (323); When the infusion unit (21) completes the infusion, the locking structure (611) and the next second limiting structure (323) engage.

20. The spraying device according to claim 19, characterized in that, The actuator (32) is provided with a first limiting structure (321) for cooperating with the locking structure (611) located in the first locking position to achieve locking; the first limiting structure (321) is located between two adjacent second limiting structures (323).

21. The spraying device according to claim 20, characterized in that, The contact surface (322) includes a first slope (3221), the first slope (3221) and the first limiting structure (321) are connected in sequence in the rotation direction of the actuator (32), and the first slope (3221) is used to guide the first limiting structure (321) to move away from the locking structure (611).

22. The spraying device according to claim 20, characterized in that, The contact surface (322) includes a second slope (3222), the first limiting structure (321) and the second slope (3222) are connected in sequence in the rotation direction of the actuator (32), the second slope (3222) is used to guide the first limiting structure (321) to move toward the locking structure (611), and the second slope (3222) protrudes from the first limiting structure (321) to prevent the actuator (32) from reversing after the locking structure (611) disengages from the first limiting structure (321).

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