Accuhaler

Abstract

The present invention relates to an accuhaler, comprising: a main body housing, which is provided with an avoidance through hole and a suction nozzle; a cover body, which is rotatably connected to an exterior of the main body housing; a drug dispensing assembly, which is located inside the main body housing; and a trigger gear, which is rotatably connected to an interior of the main body housing. One of the cover body and the trigger gear is provided with linkage protrusions, and the other of the cover body and the trigger gear is provided with linkage holes. The linkage protrusions pass through the avoidance through hole and are movably inserted into the linkage holes. When the cover body rotates, the cover body first rotates until the linkage protrusions are in contact with hole walls at one ends of the linkage holes, and then, through the cooperation of the linkage protrusions and the linkage holes, the cover body drives the trigger gear to rotate synchronously to trigger drug dispensing. According to the accuhaler of the present invention, a linkage relationship is established between the cover body and the trigger gear of the accuhaler by means of the linkage protrusions being inserted into the linkage holes, and two operation steps of opening the cover body and preparing for inhalation can be completed by means of one action. The present invention is convenient to operate, has a simple structure, few structural changes, and a stable linkage relationship, and is not prone to failure.

Description

Acrylator Technical Field

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

[0002] A pulmonary drug delivery system refers to a drug delivery system that delivers medication directly into the respiratory tract via a delivery device to exert local or systemic therapeutic effects. Currently, pulmonary drug delivery systems mainly include metered-dose inhalers, inhaled sprays, inhaled powder inhalers, and dry powder inhalers. Among these, dry powder inhalers do not require synergistic effects, do not require a propellant, deliver larger doses, are more suitable for large molecule drugs, and are therefore more widely used.

[0003] The cyclophosphide is a commonly used dry powder inhaler. It mainly consists of a base shell, an outer shell, a slide bar, and a drug delivery assembly located in the base shell. The base shell contains the drug vesicles. Part of the slide bar structure is located within the base shell, while the actuating part of the slide bar is located outside the base shell, used to rotate the slide bar by actuating this part. The outer shell serves two purposes: firstly, to cover the mouthpiece to prevent contamination, and secondly, to cover the slide bar to prevent accidental activation when not in use. A baffle on the slide bar is located inside the base shell and isolates the mouthpiece from the drug reservoir in the base shell, preventing external dust from entering and contaminating the reservoir. Furthermore, the rotation of the slide bar removes empty vesicles and moves new vesicles to the delivery position.

[0004] Before inhalation, users need to open the outer casing and then slide the lever until a click is heard to trigger a new vesicle into place, preparing the inhaler for drug delivery. The user can then inhale the medication by holding the mouthpiece in their mouth. Current inhalers require both opening the outer casing and sliding the lever before each inhalation, which is cumbersome. If the user forgets to slide the lever and inhales directly, the lever's baffle isolates the medication chamber from the mouthpiece, leaving the empty vesicle in the delivery position and preventing medication inhalation. Since the device provides no feedback or indication, the user may mistakenly believe they have inhaled the medication, delaying treatment. If the lever does not slide fully, the baffle may block part of the mouthpiece's passage, and the new vesicle may not be fully opened, leading to incorrect dosage and medication waste. Additionally, some medication powder may remain on the lever's baffle, causing contamination. If the user repeatedly moves the slider back and forth, new blister packs will move to the waste medication area before being used, falling into the bottom shell and causing waste and contamination. Furthermore, residual medication powder will be distributed between the gears, increasing friction and causing a rattling noise. Additionally, more force will be required to move the slider subsequently. After inhalation, moving the slider in the opposite direction will reset it, re-isolating the mouthpiece from the medication compartment in the bottom shell. During this reset rotation, the old blister pack remains in place, and the blister pack will not rotate.

[0005] Some detectors can perform both opening the outer casing and rotating the slide bar in a single operation. For example, the detector provided by CN116492551A uses a linkage mechanism to link the protective cover and the trigger, resulting in a complex detector structure. The inhaler provided by CN116672549A has an actuator on the inner wall of the housing that can actuate the protrusion of the main wheel during rotation, thereby driving the main wheel to rotate. Simultaneously, since the main wheel engages with a triggering auxiliary component, it can drive the triggering auxiliary component to rotate. In this design, both the actuator and the protrusion are raised structures. Furthermore, when the inhaler is in its initial state, there is a gap between the actuator and the raised structure. The housing can only drive the main wheel to rotate when the actuator contacts the protrusion. If the user rotates the housing with excessive force, causing the actuator to violently impact and pass over the protrusion, the main wheel and slide bar cannot be driven to rotate, preventing the user from inhaling the medication. Since the device provides no feedback or indication, if the user mistakenly believes they have inhaled the medication, it could delay their treatment. Summary of the Invention

[0006] Based on the aforementioned deficiencies in the prior art, the purpose of this invention is to provide an inhaler in which the cover of the inhaler and the trigger gear are linked together by a linkage protrusion and a linkage hole to establish a linkage relationship. The two operation steps of opening the cover and preparing for inhalation can be completed in one action. It is convenient to operate, has a simple structure, requires few structural modifications, has a stable linkage relationship, and is not prone to failure.

[0007] Therefore, the present invention provides the following technical solution.

[0008] This invention provides a quasi-input device, the quasi-input device comprising:

[0009] The main body shell is equipped with a clearance hole and a suction nozzle;

[0010] A cover is rotatably connected to the outer shell of the main body; the cover can rotate under external force to switch between a closed position for covering the nozzle and an open position for exposing the nozzle;

[0011] A drug delivery assembly located inside the main body housing;

[0012] A trigger gear, which is rotatably connected inside the main housing, rotates to trigger the drug dispensing assembly to dispense the drug.

[0013] The cover and the trigger gear are provided with a linkage protrusion and a linkage hole, respectively. The linkage protrusion passes through the clearance through hole and is movably inserted into the linkage hole. The length L1 of the linkage hole in the rotation direction of the cover is greater than the length L2 of the linkage protrusion in the rotation direction.

[0014] When the cover rotates, it first rotates until the linkage protrusion contacts the wall of one end of the linkage hole. Then, with the cooperation of the linkage protrusion and the linkage hole, the cover drives the trigger gear to rotate synchronously, so that the trigger gear triggers the drug dispensing.

[0015] Optionally, the trigger gear is provided with a linkage protrusion, and the cover is provided with a linkage hole;

[0016] During the process of the cover rotating from the closed position to the open position, the cover first rotates until the wall of the first end of the linkage hole contacts the linkage protrusion. Then, the first end pushes the linkage protrusion to drive the trigger gear to rotate synchronously, thereby triggering the drug dispensing and putting the detector in a ready-to-administer state.

[0017] During the process of the cover rotating from the open position to the closed position, the cover first rotates until the wall of the second end of the linkage hole contacts the linkage protrusion. Then, the second end pushes the linkage protrusion to drive the trigger gear to rotate synchronously, thereby driving the trigger gear to reset.

[0018] Optionally, the clearance through hole is a round hole, the number of the linkage protrusions is at least two, at least one of the linkage protrusions abuts against the wall of the clearance through hole, and the linkage hole and the linkage protrusion are matched one-to-one.

[0019] Optionally, the linkage protrusion includes at least two first protrusions and at least two second protrusions, all the first protrusions being spaced apart along the rotation direction of the cover, and all the second protrusions being spaced apart along the rotation direction of the cover;

[0020] The circular motion trajectory of the second protrusion surrounds the circular motion trajectory of the first protrusion, and the second protrusion abuts against the wall of the clearance through hole.

[0021] Optionally, the trigger gear is provided with a linkage hole, and the cover is provided with a linkage protrusion;

[0022] During the process of the cover rotating from the closed position to the open position, the cover first rotates until the linkage protrusion contacts the hole wall at the first end of the linkage hole. Then, the linkage protrusion pushes the first end to drive the trigger gear to rotate synchronously, thereby triggering the drug dispensing and putting the detector in a ready-to-administer state.

[0023] During the process of the cover rotating from the open position to the closed position, the cover first rotates until the linkage protrusion contacts the hole wall at the second end of the linkage hole. Then, the linkage protrusion pushes the second end to drive the trigger gear to rotate synchronously, thereby driving the trigger gear to reset.

[0024] Optionally, the clearance through hole is an arc-shaped hole.

[0025] Optionally, the linkage hole is an arc hole, and the linkage protrusion is an arc protrusion; the arc angle of the clearance through hole is α, the arc angle of the linkage protrusion is β, and the rotatable angle of the cover is θ, where α = β + θ.

[0026] Optionally, the number of the linkage protrusions is at least two, and the number of the linkage protrusions, the linkage holes, and the clearance through holes are the same and they are arranged in a one-to-one correspondence.

[0027] Optionally, the drug dispensing assembly includes a main wheel, and the trigger gear meshes with the main wheel; the trigger gear triggers the drug dispensing by driving the main wheel to rotate.

[0028] Optionally, when the cover rotates to switch between the open and closed positions, the cover first rotates 0.5°-20° so that the linkage protrusion contacts the hole wall at one end of the linkage hole.

[0029] Optionally, at least two of the linkage protrusions are spaced apart along the rotation direction of the cover, and the linkage holes are matched with the linkage protrusions one by one;

[0030] And / or, the linkage hole is a circular arc protrusion.

[0031] Optionally, the main body shell is generally circular, and the receiver further includes a bracket for vertically storing the main body shell on the placement surface.

[0032] Optionally, the main body shell is vertically supported above the bracket, and the bottom of the bracket is provided with a support surface for supporting the placement surface.

[0033] Optionally, the locator further includes a fixed housing connected to the outside of the main housing and at least partially surrounding the main housing; the bracket is connected to the fixed housing or integrally formed into the fixed housing.

[0034] Optionally, the fixed outer shell is fastened to the main outer shell.

[0035] Optionally, the cover is provided with a locking buckle, and the main body shell is provided with a locking buckle groove;

[0036] When the cover is in the closed position, the locking buckle engages with the locking buckle groove.

[0037] Optionally, the main body shell and the cover are engaged by a limiting hole and a limiting protrusion to limit the opening and closing positions of the cover.

[0038] Optionally, the limiting hole is provided on the main body shell and is arc-shaped, the limiting protrusion is provided on the inner wall of the cover and the limiting protrusion extends into the limiting hole; the wall of the limiting hole is provided with a first locking point and a second locking point;

[0039] When the cover rotates, the limiting protrusion moves along the limiting hole;

[0040] When the cover is in the closed position, the first locking point restricts the movement of the limiting protrusion to prevent the cover from leaving the closed position;

[0041] When the cover is in the open position, the second locking point restricts the movement of the limiting protrusion to prevent the cover from leaving the open position.

[0042] Optionally, when the cover is switched between the open and closed positions, the limiting protrusion impacts one end of the limiting hole and emits a collision sound to indicate that the cover has been rotated into place.

[0043] The present invention has the following technical effects:

[0044] This invention provides an inhaler in which the cover and trigger gear are linked by a linkage protrusion and a linkage hole to establish a linkage relationship. When the user opens the cover, he can drive the trigger gear to rotate. The two operation steps of opening the cover and preparing for inhalation can be completed in one action, which is convenient and avoids the user's inability to inhale the medicine correctly due to misoperation or omission.

[0045] In addition, the inhaler structure of this solution is simple, requires less structural modification, and involves fewer changes to the processing mold and assembly line, thus reducing modification costs. The linkage between the cover and the trigger gear is stable, and the linkage protrusion and linkage hole will not or are not easily disengaged due to excessive force applied by the user when rotating the cover, thus avoiding malfunction of the inhaler and preventing situations where the user does not inhale the drug but mistakenly believes that they have inhaled it.

[0046] Furthermore, by limiting the length L1 of the linkage hole in the rotation direction of the cover to be greater than the length L2 of the linkage protrusion in the rotation direction, there is a space for relative movement between the linkage protrusion and the linkage hole. This reduces the assembly difficulty of the linkage hole and the linkage protrusion, reduces the precision requirements of these two structures, reduces the requirements for molds and processes, and improves the yield rate. Attached Figure Description

[0047] Figure 1 is a side view of the admittance device when the cover is in the closed position according to the first embodiment of the present invention;

[0048] Figure 2 is an enlarged view of point A in Figure 1;

[0049] Figure 3 is a side view of the admittance device when the cover is in the open position in the first embodiment of the present invention;

[0050] Figure 4 is an enlarged view of point B in Figure 2;

[0051] Figure 5 is a three-dimensional structural schematic diagram of the trigger gear in the first embodiment of the present invention.

[0052] Figure 6 is a three-dimensional structural schematic diagram of the trigger gear in the first embodiment of the present invention (Figure 2);

[0053] Figure 7 is a three-dimensional structural schematic diagram of the cover body in the first embodiment of the present invention;

[0054] Figure 8 is a side view of the cover in the first embodiment of the present invention;

[0055] Figure 9 is a partial three-dimensional structural view of the admittance device in the first embodiment of the present invention.

[0056] Figure 10 is a side view of the first housing in the first embodiment of the present invention;

[0057] Figure 11 is a side view of the second housing of the present invention;

[0058] Figure 12 is a three-dimensional structural schematic diagram of the fixed outer shell of the present invention;

[0059] Figure 13 is a side view of the fixed housing of the present invention;

[0060] Figure 14 is a partial three-dimensional structural view of the admittance device in the first embodiment of the present invention.

[0061] Figure 15 is a three-dimensional structural diagram of the admittance device when the cover is in the closed position in the first embodiment of the present invention;

[0062] Figure 16 is a partial perspective view of the admittance device in the second embodiment of the present invention.

[0063] Figure 17 is a side view of the trigger gear in the second embodiment of the present invention;

[0064] Figure 18 is a three-dimensional structural diagram of the cover body in the second embodiment of the present invention;

[0065] Figure 19 is a side view of the second housing in the second embodiment of the present invention.

[0066] Explanation of reference numerals in the attached drawings: 100, Applicator; 1, Main body shell; 11, Clearance through hole; 12, Suction nozzle; 13, Locking groove; 14, Limiting hole; 141, First locking point; 142, Second locking point; 143, First limiting space; 144, Second limiting space; 15, Fastening hole; 16, First housing; 17, Second housing; 2, Cover; 21, Locking buckle; 22, Limiting protrusion; 3, Trigger gear; 31, Main body; 311, Gear tooth structure; 32, Shaft hole; 41, Linkage protrusion; 411, First protrusion; 412, Second protrusion; 42, Linkage protrusion; 51, Linkage hole; 511, First end; 512, Second end; 52, Linkage hole; 521, First end; 522, Second end; 61, Main wheel; 62, Hollow wheel; 621, Bubble groove; 7. Fixed outer shell; 71. Bracket; 711. First annular support column; 712. Second annular support column; 72. Fastening protrusion. Detailed Implementation

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] The "first direction a" and "second direction b" mentioned in this invention are based on the markings in Figures 1, 2, 4 and 17.

[0073] The admittance device of the present invention will now be described in detail with reference to Figures 1 to 19.

[0074] In this embodiment, as shown in Figures 1, 3, 9, 15, and 16, the applicator 100 includes a main housing 1, a cover 2, a drug dispensing assembly, and a trigger gear 3. The main housing 1 has a clearance through-hole 11 and a suction nozzle 12, forming a drug chamber. The drug dispensing assembly is located inside the main housing 1. The cover 2 is rotatably connected to the outside of the main housing 1 and can rotate under external force to switch between a closed position that covers the suction nozzle 12 and an open position that exposes the suction nozzle 12. The trigger gear 3 is located inside the main housing 1 and rotatably connected to it. The trigger gear 3 triggers the drug dispensing assembly to dispense the drug by rotating.

[0075] It should be understood that the drug dispensing assembly can adopt the drug dispensing structure of any existing eliminator. Typically, as shown in Figure 9, the drug dispensing assembly includes a hollow wheel 62, a blister roll, a blister substrate winding wheel, and a blister cap winding wheel (not shown in the figure). The blister roll has multiple drug blister packs and is rotatably connected to the main body shell 1. The blister substrate winding wheel is used to collect the substrate after the blister packs are torn open, and the blister cap winding wheel is used to collect the caps after the blister packs are torn open. The outer peripheral wall of the hollow wheel 62 is provided with blister grooves 621, and some of the blister packs on the blister roll are respectively embedded in the corresponding blister grooves 621. In this way, when the hollow wheel 62 rotates, the blister packs of the blister roll can move forward.

[0076] As shown in Figures 1 to 4 and Figures 16 to 18, one of the cover 2 and the trigger gear 3 has a linkage protrusion, and the other has a linkage hole. The linkage protrusion passes through the clearance through hole 11 and is movably inserted into the linkage hole. The length L1 of the linkage hole in the rotation direction of the cover 2 is greater than the length L2 of the linkage protrusion in the rotation direction, so that the linkage protrusion can move in the linkage hole. The linkage hole can be a through hole or a blind hole. When the cover 2 rotates from the closed position to the open position, the cover 2 first rotates until the linkage protrusion contacts the hole wall at one end of the linkage hole. Then, with the cooperation of the linkage protrusion and the linkage hole, the cover 2 drives the trigger gear 3 to rotate synchronously. The trigger gear 3 transmits the rotational driving force to the hollow wheel 62, triggering the drug dispensing by rotating the hollow wheel 62, so that the applicator 100 is in the ready-to-administer state. When the cover 2 rotates from the open position to the closed position, the cover 2 first rotates until the linkage protrusion contacts the wall of the other end of the linkage hole. Then, with the cooperation of the linkage protrusion and the linkage hole, the cover 2 drives the trigger gear 3 to rotate synchronously. Since the trigger gear 3 rotates in the opposite direction, the hollow wheel 62 does not rotate at this time. The cover 2 drives the trigger gear 3 to reset, ready for the next drug dispensing trigger operation. "Drug dispensing" means that the new blister has moved to the mouthpiece 12, that is, the new blister is in place, and the user can directly inhale the drug.

[0077] By adopting the above technical solution, the cover 2 and the trigger gear 3 are linked by the interlocking of the linkage protrusion and the linkage hole to establish a linkage relationship. In this way, the user can drive the trigger gear 3 to rotate at the same time as opening the cover 2. The two operation steps of opening the cover and preparing for inhalation (new vesicle in place) can be completed in one action. The user can directly inhale the drug, which is convenient and avoids the user's inability to inhale the drug correctly due to misoperation or omission.

[0078] Furthermore, compared to the solution in the existing technology CN116492551A, the inhaler 100 in this solution has a simpler structure, requires less structural modification, and involves fewer changes to the processing mold and assembly line, thereby reducing modification costs. Compared to the solution in the existing technology CN116672549A, which uses actuators and protrusions with raised structures for linkage, the inhaler 100 in this solution uses a linkage protrusion and a linkage hole to link the cover 2 with the trigger gear 3. The linkage relationship is more stable, and the linkage protrusion and linkage hole will not or are less likely to disengage due to excessive force applied by the user when rotating the cover 2, thus avoiding malfunctions of the inhaler 100 and preventing situations where the user does not inhale the medication but mistakenly believes they have inhaled it.

[0079] In addition, by limiting the length L1 of the linkage hole in the rotation direction of the cover 2 to be greater than the length L2 of the linkage protrusion in the rotation direction, there is a space for relative movement between the linkage protrusion and the linkage hole. This reduces the assembly difficulty of the linkage hole and the linkage protrusion, reduces the precision requirements of the two structures, reduces the requirements of the mold and process, and improves the yield rate.

[0080] In one embodiment, as shown in FIG9, the drug dispensing assembly includes a main wheel 61, and a trigger gear 3 meshes with the main wheel 61; the trigger gear 3 drives the main wheel 61 to rotate to trigger drug dispensing. Specifically, a hollow wheel 62 is fitted onto the main wheel 61, and the main wheel 61 meshes with the ratchet teeth of the hollow wheel 62 via a pawl. When using the inhaler 100, as shown in FIGS. 1 to 5, when the cover 2 rotates from the closed position to the open position, the cover 2 drives the trigger gear 3 to rotate along the first direction a, and the main wheel 61 rotates in the opposite direction (along the second direction b). The pawl of the main wheel 61 pushes the hollow wheel 62 to rotate synchronously, and the hollow wheel 62 drives the blister pack to move forward until the new blister pack is in place. At this time, as shown in FIG3, the cover 2 is in the open position, the inhaler 100 is in the ready-to-dose state, and the user can inhale the drug through the mouthpiece 12. As shown in Figures 1 to 5, when the cover 2 rotates from the open position to the closed position, the cover 2 drives the trigger gear 3 to rotate in the second direction b, and the main wheel 61 rotates in the opposite direction (rotates in the first direction a). At this time, the pawl of the main wheel 61 is compressed and springs back, the hollow wheel 62 does not rotate, and the old vesicle remains in its original position. When the next drug dispensing is triggered, the old vesicle is removed and the new vesicle is in place to complete the preparation for the next drug administration.

[0081] In one embodiment, when the cover 2 rotates to switch between the open and closed positions, the cover 2 first rotates 0.5°-20° so that the linkage protrusion contacts the hole wall at the corresponding end of the linkage hole. Then, the cover 2 can drive the trigger gear 3 to rotate synchronously. Specifically, the angle of the cover 2's initial rotation includes, but is not limited to, 0.5°, 1°, 1.5°, 2°, 2.5°, 3°, 3.5°, 4°, 4.5°, and 5°. 5.5°, 6°, 6.5°, 7°, 7.5°, 8°, 8.5°, 9°, 9.5°, 10°, 10.5°, 11°, 11.5°, 12°, 12.5°, 13°, 13.5°, 14°, 14.5°, 15°, 15.5°, 16°, 17.5°, 18°, 18.5°, 19°, 19.5°, 20°. In this design, the rotation angle of the cover 2 is limited, ensuring rapid drug dispensing while reducing the assembly difficulty of the linkage protrusion and linkage hole. Preferably, the cover 2 rotates 4° first, so that the linkage protrusion contacts the corresponding end of the linkage hole.

[0082] In one embodiment, as shown in Figures 5 and 18, the number of linkage protrusions is at least two, and the at least two linkage protrusions are spaced apart along the rotation direction of the cover 2. The linkage holes are matched with the linkage protrusions one by one to improve the stability of the linkage between the cover 2 and the trigger gear 3.

[0083] In one embodiment, as shown in Figures 2, 17, and 18, the linkage hole is an arc-shaped hole, and the linkage protrusion is also an arc-shaped protrusion. That is, the cross-section of the linkage protrusion is arc-shaped. Compared with a cylindrical linkage protrusion, the linkage protrusion in this embodiment has a larger contact area with the linkage hole, which is beneficial for stable linkage. The arc angle of the linkage hole is greater than that of the linkage protrusion, and the difference between the arc angles of the two is 0.5°-20°. In this way, the cover 2 rotates 0.5°-20° first to make the linkage protrusion contact the hole wall at the corresponding end of the linkage hole. Then, the cover 2 can drive the trigger gear 3 to rotate synchronously.

[0084] In one embodiment, as shown in Figures 1, 10, and 11, the main housing 1 is generally circular. As shown in Figures 1 and 15, the receptacle 100 also includes a support 71 for vertically storing the main housing 1 on a placement surface (such as a desktop). Existing receptacles, due to their generally circular shape, can only be placed flat on the placement surface, increasing lateral space usage. Furthermore, the flat receptacle's contact with the placement surface is either point-to-surface or arc-to-plane, making it prone to rotation under external force, resulting in unstable storage. This solution, as shown in Figures 1 and 3, by setting the support 71, allows the main housing 1 to be vertically stored on the placement surface. This reduces lateral space usage and makes storage and retrieval more convenient, preventing easy movement. In Figure 1, the vertical direction indicates the vertical storage direction of the receptacle 100.

[0085] Furthermore, as shown in Figure 1, the main body shell 1 is vertically supported above the bracket 71. The bottom of the bracket 71 is provided with a support surface, which is used to support the placement surface. In this way, the center of gravity of the main body shell 1 can fall entirely or mostly on the bracket 71, which is beneficial for the bracket 71 to stably support the main body shell 1. Of course, the bracket 71 can also be set on one side of the main body shell 1 in the left-right or front-back direction. In order to ensure the stability of the center of gravity of the instrument 100, the weight of the bracket 71 must be greater than or equal to the total weight of the main body shell 1, the cover 2, and the components located inside the main body shell 1, so as to ensure that the bracket 71 can stably support the main body shell 1.

[0086] Further, as shown in Figures 12 and 15, the bracket 71 includes a first annular support column 711 and a second annular support column 712. The first annular support column 711 surrounds the second annular support column 712, and the first annular support column 711 and the second annular support column 712 together support the main body shell 1. This ensures that the bracket 71 can stably support the main body shell 1, and also facilitates the lightweight design of the detector 100. The shapes of the first annular support column 711 and the second annular support column 712 include, but are not limited to, regular or irregular shapes such as square, circle, and triangle. Of course, the bracket 71 can also be cylindrical, or it can be composed of multiple non-annular support columns, as long as it can stably support the main body shell 1.

[0087] In one embodiment, as shown in Figures 1 and 12, the locator 100 further includes a fixed housing 7, which is connected to the outside of the main housing 1 and does not rotate. The bracket 71 is connected to the fixed housing 7 or integrally formed on the fixed housing 7. The longitudinal section of the fixed housing 7 is approximately U-shaped, and the fixed housing 7 partially surrounds the main housing 1 to improve the stability of the connection between the bracket 71 and the main housing 1.

[0088] Furthermore, the fixed outer shell 7 is fastened to the main outer shell 1, facilitating assembly. Specifically, as shown in Figures 10, 11, and 13, the inner wall of the fixed outer shell 7 has four fastening protrusions 72, and the main outer shell 1 has four fastening holes 15. The fastening protrusions 72 and the fastening holes 15 are arranged in a one-to-one correspondence and fasten to each other to connect the fixed outer shell 7 to the main outer shell 1. The fastening holes 15 can be through holes or blind holes. Preferably, to facilitate the thin design of the main outer shell 1, the fastening holes 15 are through holes. Of course, the number of fastening protrusions 72 is not limited to four; there can be two, three, or even more. The fastening holes 15 are matched with the fastening protrusions 72 one-to-one.

[0089] In one embodiment, as shown in Figures 7 and 14, the cover 2 is provided with a locking buckle 21, and the main body shell 1 is provided with a locking buckle groove 13. When the cover 2 is in the closed position, the locking buckle 21 is engaged with the locking buckle groove 13 to prevent the cover 2 from being accidentally opened, thus preventing the nozzle 12 and the internal space of the main body shell 1 from being contaminated.

[0090] Furthermore, as shown in Figures 1 and 14, when the cover 2 is in the closed position, the locking buckle 21 abuts against the groove wall of the locking buckle groove 13 along the first direction a, and the side wall of the cover 2 abuts against the fixed housing 7 along the second direction b. In this way, the locking buckle 21 and the fixed housing 7 together limit the cover 2 to restrict its rotation, so that the cover 2 can be stably kept in the closed position. When the force of rotating the cover 2 along the first direction a reaches a preset value, the locking buckle 21 can disengage from the locking buckle groove 13, so that the cover 2 can smoothly move to the open position along the first direction a.

[0091] Further, as shown in Figures 10, 11, and 14, the main body shell 1 includes a first shell 16 and a second shell 17. The first shell 16 and the second shell 17 are connected (e.g., interlocked) to form a cavity. The trigger gear 3 and the drug dispensing assembly are both located in this cavity, and a clearance through hole 11 is provided on the first shell 16. As shown in Figure 14, the seam at the joint between the first shell 16 and the second shell 17 forms a locking groove 13, eliminating the need for a grooving process.

[0092] In one embodiment, as shown in Figures 7, 10, 18, and 19, the main body shell 1 and the cover 2 are connected by a limiting hole 14 and a limiting protrusion 22 to restrict the open and closed positions of the cover 2, so that the cover 2 does not easily rotate when held in the open or closed position. The limiting hole 14 can be a through hole or a blind hole, and it is located on the first shell 16.

[0093] Further, as shown in Figures 1, 7, 10, and 19, a limiting hole 14 is provided on the main body shell 1 and is arc-shaped. A limiting protrusion 22 is provided on the inner wall of the cover 2, and the limiting protrusion 22 extends into the limiting hole 14. When the cover 2 rotates, the limiting protrusion 22 can move relative to the limiting hole 14. A first locking point 141 and a second locking point 142 are provided on the hole wall of the limiting hole 14. The first locking point 141 and the second locking point 142 are distributed sequentially along the first direction a. A first limiting space 143 is formed between the first locking point 141 and the hole wall at one end of the limiting hole 14, and a second limiting space 144 is formed between the second locking point 142 and the hole wall at the other end of the limiting hole 14.

[0094] When the cover 2 is in the closed position, the limiting protrusion 22 of the cover 2 engages in the first limiting space 143. At this time, the first locking point 141 restricts the movement of the limiting protrusion 22 along the first direction a, thereby preventing the cover 2 from leaving the closed position. When the external force applied to the cover 2 reaches a preset value, the external force can drive the cover 2 to rotate along the first direction a. During the rotation of the cover 2, the limiting protrusion 22 first passes the first locking point 141, and then moves relative to the limiting hole 14 until the limiting protrusion 22 moves to abut against the second locking point 142 along the first direction a. The external force is increased so that the limiting protrusion 22 passes the second locking point 142. After passing, since the resistance of the second locking point 142 to the limiting protrusion 22 disappears, the rotation speed of the cover 2 increases, and the limiting protrusion... The cover 22 rotates rapidly until it hits the end wall of the limiting hole 14, producing a collision sound, which can then indicate to the user that the cover 2 has reached the open position. At this time, the limiting protrusion 22 is engaged in the second limiting space 144. The limiting protrusion 22 is blocked by the end wall of the limiting hole 14 and cannot continue to move along the first direction a. The cover 2 stops rotating. The external force applied to the cover 2 is removed. Since the second locking point 142 restricts the movement of the limiting protrusion 22 along the second direction b, it can thus prevent the cover 2 from leaving the open position.

[0095] Similarly, when the cover 2 is in the open position, an external force drives the cover 2 to move along the second direction b. The external force is increased so that the limiting protrusion 22 first passes the second locking point 142, then moves to contact the first locking point 141, and then passes the first locking point 141. The limiting protrusion 22 hits the wall of the limiting hole 14 and makes a collision sound to indicate to the user that the cover 2 has reached the closed position. The limiting protrusion 22 is engaged in the first limiting space 143, and the cover 2 stops rotating.

[0096] In one embodiment, as shown in Figures 5, 6, 9, 16, and 17, the trigger gear 3 includes a main body 31 and a shaft hole 32. The shaft hole 32 is rotatably connected to the main housing 1. The main body 31 is provided with a gear tooth structure 311, which meshes with the main wheel 61. The main body 31 is generally circular in shape, and the trigger gear 3 is located entirely inside the main housing 1. Compared to the slider in the prior art, there is no need to open a through hole in the main housing for the user to move the slider, thereby improving the internal hygiene of the main housing 1 and enhancing the safety of medication use.

[0097] In this solution, the linkage protrusion and linkage hole can be configured in several ways: a linkage protrusion is provided on the trigger gear 3, and a matching linkage hole is provided on the cover 2; alternatively, a linkage hole is provided on the trigger gear 3, and a matching linkage protrusion is provided on the cover 2; or, both a first linkage protrusion and a first linkage hole are provided on the trigger gear 3, and a second linkage hole and a second linkage protrusion are provided on the cover 2, with the first linkage protrusion and the second linkage hole engaging with each other. This solution details two specific configuration schemes for the linkage protrusion and linkage hole, as described in the first and second implementation methods below.

[0098] First Implementation Method

[0099] The first embodiment of the present invention, the admittance device, is described in detail below with reference to Figures 1 to 15.

[0100] In this embodiment, as shown in Figures 1 to 10, the trigger gear 3 is provided with a linkage protrusion 41, and the cover 2 is provided with a linkage hole 51. The linkage protrusion 41 passes through the clearance through hole 11 from the inside to the outside and extends to the outside of the main body shell 1 to be inserted into the linkage hole 51. The linkage hole 51 has a first end 511 and a second end 512, and the first end 511 and the second end 512 are spaced apart along a first direction a.

[0101] As shown in Figures 1 and 2, when the cover 2 is in the closed position, the linkage protrusion 41 abuts against the second end 512 of the linkage hole 51.

[0102] As shown in Figures 1 to 4, during the process of the cover 2 rotating from the closed position to the open position, the linkage hole 51 rotates along the first direction a with the cover 2. When the cover 2 rotates a certain angle (e.g., 4°), as shown in Figure 4, the hole wall of the first end 511 of the linkage hole 51 contacts the linkage protrusion 41. Then, the cover 2 continues to rotate along the first direction a, and the first end 511 pushes the linkage protrusion 41 to rotate along the first direction a, so as to drive the trigger gear 3 to rotate synchronously to trigger drug dispensing. When the cover 2 rotates to the open position, the drug dispensing is completed, so that the pre-administered device 100 is in the state of ready to administer the drug.

[0103] As shown in Figures 1 to 4, during the process of the cover 2 rotating from the open position to the closed position, the linkage hole 51 rotates along the second direction b with the cover 2. When the cover 2 rotates a certain angle (e.g., 4°), as shown in Figure 2, the hole wall of the second end 512 of the linkage hole 51 contacts the linkage protrusion 41. Then, the cover 2 continues to rotate along the second direction b so that the second end 512 pushes the linkage protrusion 41 to rotate along the second direction b, thereby driving the trigger gear 3 to rotate synchronously, and thus driving the trigger gear 3 to reset.

[0104] In one embodiment, as shown in FIG2, the arc angle of the linkage hole 51 is 104° and the arc angle of the linkage protrusion 41 is 100°. In this way, each time the cover 2 rotates 4° first, it can drive the trigger gear 3 to rotate synchronously.

[0105] In one embodiment, as shown in Figures 2 and 10, the clearance through-hole 11 is a circular hole, and the number of linkage protrusions 41 is at least two. At least one linkage protrusion 41 abuts against the wall of the clearance through-hole 11, and the linkage hole 51 is matched with the linkage protrusion 41 one by one. In this solution, by having the clearance through-hole 11 abut against at least one linkage protrusion 41, the main body shell 1 provides support for the rotation of the trigger gear 3, which is beneficial for the stable rotation of the trigger gear 3. Of course, the clearance through-hole 11 is not limited to a circular hole; it can also be an arc-shaped hole. The clearance through-hole 11 is matched with the linkage protrusion 41 one by one, and the arc angle of the clearance through-hole 11 is greater than the arc angle of the linkage hole 51 to avoid the clearance through-hole 11 interfering with the rotation of the linkage protrusion 41.

[0106] Further, as shown in Figures 2 and 5, the linkage protrusion 41 includes two first protrusions 411 and two second protrusions 412. As shown in Figures 2, 7, and 8, the number of linkage holes 51 is four, with two linkage holes 51 respectively matching the two first protrusions 411 and the other two linkage holes 51 respectively matching the two second protrusions 412. All the first protrusions 411 are spaced apart along the rotation direction of the cover 2, and all the second protrusions 412 are spaced apart along the rotation direction of the cover 2. The circular motion trajectory of the second protrusions 412 surrounds the circular motion trajectory of the first protrusions 411, and the second protrusions 412 abut against the wall of the clearance through hole 11. Of course, the number of first protrusions 411 is not limited to two, and the number of second protrusions 412 is not limited to two. The number of first protrusions 411 and second protrusions 412 can also be one, three, four, or even more.

[0107] Furthermore, as shown in Figures 2 and 5, the linkage protrusion 41 is an arc-shaped protrusion, and the linkage hole 51 is an arc-shaped hole. The length of the second protrusion 412 in the rotational direction of the cover 2 is greater than the length of the first protrusion 411 in the rotational direction of the cover 2. Correspondingly, the length of the linkage hole 51 matching the second protrusion 412 in the rotational direction of the cover 2 is greater than the length of the linkage hole 51 matching the first protrusion 411 in the rotational direction of the cover 2. By increasing the length of the second protrusion 412 in the rotational direction of the cover 2, the contact area between the second protrusion 412 and the clearance through hole 11 of the main body shell 1 can be increased, ensuring that the main body shell 1 can better support the trigger gear 3.

[0108] Second Implementation Method

[0109] The second embodiment of the applicator of this utility model is described in detail below with reference to Figures 16 to 19.

[0110] In this embodiment, as shown in Figures 16 to 19, the trigger gear 3 is provided with a linkage hole 52, and the cover 2 is provided with a linkage protrusion 42. The linkage protrusion 42 passes through the clearance through hole 11 from the outside to the inside and extends into the interior of the main body shell 1 to be inserted into the linkage hole 52. The linkage hole 52 has a first end 521 and a second end 522, and the first end 521 and the second end 522 are spaced apart along the second direction b.

[0111] When the cover 2 is in the closed position, the linkage protrusion 42 abuts against the second end 522 of the linkage hole 52.

[0112] During the process of the cover 2 rotating from the closed position to the open position, the linkage protrusion 42 rotates along the first direction a with the cover 2. When the cover 2 rotates at a certain angle (e.g., 4°), the linkage protrusion 42 contacts the hole wall of the first end 521 of the linkage hole 52. Then, the cover 2 continues to rotate, and the linkage protrusion 42 pushes the first end 521 to rotate along the first direction a, so as to drive the trigger gear 3 to rotate synchronously to trigger drug dispensing. When the cover 2 rotates to the open position, the drug dispensing is completed, so that the pre-administered device 100 is in the state of ready to administer the drug.

[0113] During the process of the cover 2 rotating from the open position to the closed position, the linkage protrusion 42 rotates along the second direction b with the cover 2. When the cover 2 rotates at a certain angle (e.g., 4°), the linkage protrusion 42 contacts the hole wall of the second end 522 of the linkage hole 52. Then, the cover 2 continues to rotate so that the linkage protrusion 42 pushes the second end 522 to rotate along the second direction b, thereby driving the trigger gear 3 to rotate synchronously, and thus driving the trigger gear 3 to reset.

[0114] In one embodiment, as shown in FIG19, the clearance through hole 11 is an arc-shaped hole. Of course, the clearance through hole 11 is not limited to an arc-shaped hole, and can also be a circular hole.

[0115] Furthermore, as shown in Figures 17 to 19, the linkage hole 52 is an arc-shaped hole, and the linkage protrusion 42 is an arc-shaped protrusion. The arc angle of the clearance through hole 11 is α, the arc angle of the linkage protrusion 42 is β, and the rotatable angle of the cover 2 is θ, where α = β + θ.

[0116] Furthermore, as shown in Figures 17 and 18, there are two linkage protrusions 42, which are rotationally symmetrical about the rotation axis of the cover 2. The number of linkage protrusions 42, linkage holes 52, and clearance through holes 11 are the same and they are arranged in a one-to-one correspondence. The two linkage protrusions 42 are respectively inserted into the two linkage holes 52 to improve the stability of the linkage between the cover 2 and the trigger gear 3. Of course, the number of linkage protrusions 42 can be one, three, or even more, and the number of linkage holes 52 and clearance through holes 11 matches the number of linkage protrusions 42 and their positions correspond one-to-one.

[0117] 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.

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