Depolymerization mechanism and powder suction device

Abstract

The invention discloses a depolymerization mechanism and a powder suction device. The depolymerization mechanism comprises a rotational flow piece, a rotating shaft and a rotating shaft, the flow guide part is matched with the rotational flow part to form a rotational flow cavity; wherein a powder inlet is formed in the top wall of the rotational flow cavity, a powder outlet is formed in the bottom wall of the rotational flow cavity, and the flow guide part is provided with a powder outlet channel communicated with the powder outlet. Through the arrangement, the powder can be better depolymerized in the rotational flow cavity of the depolymerization mechanism, the depolymerization effect of the powder and the emptying utilization rate of the powder are improved, and waste caused by not-in-place depolymerization of the powder is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of inhalation devices, and in particular to a deagglomeration mechanism and a powder inhalation device. Background Art

[0002] Powder inhalers typically store powder in a powder container. Through a well-designed mechanical structure, a predetermined dose of powder is placed in the airflow channel before each inhalation. The user holds the device's mouthpiece and inhales, generating an airflow that carries the drug particles through the airflow channel and into the user's respiratory system. Reservoir-type powder inhalers are a commonly used powder aerosol drug delivery device on the market due to their high powder loading capacity and high cost-effectiveness.

[0003] However, existing powder inhalation devices are prone to problems such as poor powder deagglomeration effect and low powder emptying utilization rate. Summary of the Invention

[0004] The present application mainly provides a deagglomeration mechanism and a powder inhalation device to solve the problems of poor powder deagglomeration effect and low powder emptying utilization rate of existing powder inhalation devices.

[0005] In order to solve the above technical problems, a technical solution adopted in this application is to provide a depolymerization mechanism, comprising:

[0006] Swirl parts;

[0007] A flow guide member, cooperating with the swirl member to form a swirl chamber;

[0008] The top wall of the swirl chamber has a powder inlet, the bottom wall of the swirl chamber has a powder outlet, and the flow guide has a powder outlet channel connected to the powder outlet.

[0009] In which, the surface of the swirl member close to the guide member has a swirl groove, the bottom wall of the swirl groove serves as the top wall of the swirl chamber, the bottom wall of the swirl groove is connected with a first fin and a second fin, the first fin and the side wall of the swirl groove are spaced apart to form a first tangential air inlet groove, the second fin and the side wall of the swirl groove are spaced apart to form a second tangential air inlet groove, and a mixing groove is formed between the first fin and the second fin; the powder inlet is located on the bottom wall of the first tangential air inlet groove; the guide member covers the swirl groove to form the swirl chamber.

[0010] Wherein, the powder inlet is located at the first end of the first tangential air inlet groove, and the first end of the first tangential air inlet groove is connected to the mixing groove.

[0011] In which, the surface of the guide member close to the swirl member has two inclined guide ribs; the two inclined guide ribs are respectively embedded in the first tangential air inlet groove and the second tangential air inlet groove; along the air inlet direction of the first tangential air inlet groove and the second tangential air inlet groove, the height of the inclined guide rib gradually increases; the projection of the inclined guide rib on the swirl member covers the powder inlet.

[0012] The surface of the guide member close to the swirl member further has a connecting rib matching the mixing groove, and the powder outlet passes through the connecting rib; the top surface of the connecting rib is connected to the guide inclined surface of the inclined guide rib.

[0013] In which, the surface of the guide member close to the swirl member has a swirl groove, and the swirl groove includes a mixing groove and a first tangential air inlet groove and a second tangential air inlet groove respectively connected to the two opposite side walls of the mixing groove; the powder outlet is located on the bottom wall of the mixing groove, and the distance between the powder outlet and the side of the mixing groove is not greater than 2 mm.

[0014] In which, the swirl member covers the swirl groove to form the swirl chamber; the surface of the swirl member close to the guide member has a cylindrical protrusion and multiple inclined guide ribs, and the height of the inclined guide ribs gradually increases along the air intake direction of the first tangential air intake groove and the second tangential air intake groove; the height of the cylindrical protrusion is greater than the maximum height of the inclined guide ribs.

[0015] Among them, the number of the inclined guide ribs is two, the two inclined guide ribs are symmetrically arranged with respect to the center, and the curvature of the outer side surface of each inclined guide rib is greater than 90 degrees; the inclined guide rib is embedded in the mixing trough, the outer side surface of the inclined guide rib is a circular arc surface and fits with the side surface of the mixing trough, and the inner side surface of the inclined guide rib is a circular arc surface and fits with the side surface of the cylindrical protrusion.

[0016] Wherein, the powder inlet passes through the inclined guide rib.

[0017] Wherein, the powder inlet is located at the starting position of the guide slope of the inclined guide rib.

[0018] In which, the swirl member covers the swirl groove to form the swirl chamber; the surface of the swirl member close to the guide member has a cylindrical protrusion and a plurality of inclined guide ribs, and the plurality of inclined guide ribs are arranged around the cylindrical protrusion; the side of the cylindrical protrusion has a baffle or the side of the powder outlet has a baffle, the baffle is arranged at a distance from the powder inlet, and the projection of the baffle on the swirl member covers the powder inlet.

[0019] To solve the above technical problems, another technical solution adopted by the present application is to provide a powder inhalation device, comprising:

[0020] a powder container having a powder outlet at the bottom;

[0021] A delivery mechanism is disposed at the bottom of the powder container; an air flow channel is formed between the delivery mechanism and the powder container; the delivery mechanism includes a mounting seat and a dosing assembly; the dosing assembly is slidably disposed between the mounting seat and the powder container; the dosing assembly is capable of moving back and forth between the powder outlet and the air flow channel to deliver the powder in the powder container to the air flow channel;

[0022] a deagglomeration mechanism, disposed at the bottom of the powder container;

[0023] Wherein, the deagglomeration mechanism is any one of the deagglomeration mechanisms described above; one end of the air flow channel is connected to the cyclone chamber through the powder inlet.

[0024] In which, the swirl chamber has a mixing chamber and a first tangential air inlet channel and a second tangential air inlet channel respectively connected to two opposite side walls of the mixing chamber; the gas flow of the airflow channel accounts for 8-25% of the total gas flow of the airflow channel, the first tangential air inlet channel and the second tangential air inlet channel.

[0025] Wherein, the mounting seat and the swirl component are integrally formed.

[0026] The present application has the following beneficial effects: Different from the prior art, the present application discloses a deagglomeration mechanism and a powder inhalation device, comprising: a swirl member; and a flow guide member that cooperates with the swirl member to form a swirl chamber; wherein the top wall of the swirl chamber has a powder inlet, the bottom wall of the swirl chamber has a powder outlet, and the flow guide member has a powder outlet channel connected to the powder outlet. Through the above arrangement, powder can be better deagglomerated within the swirl chamber of the deagglomeration mechanism, improving the powder deagglomeration effect and the powder emptying utilization rate, and avoiding waste caused by incomplete deagglomeration of powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0028] Figure 1 This is a schematic structural diagram of the powder inhalation device provided by the present application in one state;

[0029] Figure 2 is a schematic structural diagram of the powder inhalation device provided by the present application in another state;

[0030] Figure 3 yes Figure 1 A schematic cross-sectional view of a powder inhalation device is provided;

[0031] Figure 4A yes Figure 2 A schematic cross-sectional view of a powder inhalation device is provided;

[0032] Figure 4B yes Figure 4A A partially enlarged schematic diagram of the provided powder inhalation device;

[0033] Figure 4C yes Figure 4A A partially enlarged schematic diagram of the airflow channel of the provided powder inhalation device;

[0034] Figure 5 yes Figure 1 A schematic diagram of the structure of the provided powder inhalation device with the outer cover removed;

[0035] Figure 6 yes Figure 1 A schematic diagram of the structure of the powder inhalation device provided with the housing removed at an angle;

[0036] Figure 7A yes Figure 1 A schematic structural diagram of the outer cover of the provided powder inhalation device;

[0037] Figure 7B yes Figure 7A A partial enlarged schematic diagram of the outer cover is provided;

[0038] Figure 8 yes Figure 1 A schematic structural diagram of the air compression mechanism of the provided powder inhalation device;

[0039] Figure 9 yes Figure 8 A cross-sectional schematic diagram of the air compression mechanism is provided;

[0040] Figure 10 yes Figure 8 A schematic structural diagram of the connecting rod of the provided air compression mechanism;

[0041] Figure 11A yes Figure 8 A schematic diagram of the structure of the powder container of the air compression mechanism provided at an angle;

[0042] Figure 11B yes Figure 11A A schematic diagram of the structure of the powder container provided is shown at another angle;

[0043] Figure 12 yes Figure 11AA schematic cross-sectional view of a powder container is provided;

[0044] Figure 13A yes Figure 1 A schematic diagram of the assembly structure of the delivery mechanism and connecting rod of the powder inhalation device provided;

[0045] Figure 13B yes Figure 13A A schematic cross-sectional view of the assembly structure of the delivery mechanism and the connecting rod is provided;

[0046] Figure 13C yes Figure 13B A partial enlarged schematic diagram;

[0047] Figure 14A yes Figure 13A A schematic diagram of the structure of the dosage assembly of the delivery mechanism is provided;

[0048] Figure 14B yes Figure 14A A schematic cross-sectional view of a provided dosage assembly;

[0049] Figure 15A yes Figure 14A A schematic diagram of the structure of the slider of the dosage assembly is provided at an angle;

[0050] Figure 15B yes Figure 15A The provided schematic diagram of the slider structure at another angle;

[0051] Figure 16A yes Figure 14A A schematic diagram of the structure of the dosage plate of the dosage assembly is provided at an angle;

[0052] Figure 16B yes Figure 16A A schematic diagram of the structure of the dosage plate provided at another angle;

[0053] Figure 17A yes Figure 1 A schematic structural diagram of a mounting base of a delivery mechanism of a powder inhalation device provided in one state at an angle;

[0054] Figure 17B yes Figure 17A A schematic diagram of the structure of the provided mounting base at another angle;

[0055] Figure 17C yes Figure 17A A schematic diagram of the structure of the provided mounting base at another angle;

[0056] Figure 17D yes Figure 17C A partial enlarged schematic diagram of the provided mounting base;

[0057] Figure 17E yes Figure 1 A schematic structural diagram of a mounting base of a delivery mechanism of a powder inhalation device provided in another state at an angle;

[0058] Figure 17F yes Figure 17E A partial enlarged schematic diagram of the provided mounting base;

[0059] Figure 18A yes Figure 1 A schematic diagram of the assembly structure of the delivery mechanism and connecting rod of the powder inhalation device in another state is provided;

[0060] Figure 18B yes Figure 18A A schematic cross-sectional view of the assembly structure of the delivery mechanism and the connecting rod is provided;

[0061] Figure 19A yes Figure 1 A schematic diagram of the assembly structure of the delivery mechanism and connecting rod of the powder inhalation device in another state is provided;

[0062] Figure 19B yes Figure 19A A schematic cross-sectional view of the assembly structure of the delivery mechanism and the connecting rod is provided;

[0063] Figure 20A yes Figure 1 A schematic diagram of the assembly structure of the dosage assembly and the connecting rod of the powder inhaler device in the same state is provided;

[0064] Figure 20B yes Figure 20A A partial enlarged schematic diagram;

[0065] Figure 21A yes Figure 1 A schematic diagram of the assembly structure of the dosage assembly and the connecting rod of the powder inhaler device in another state is provided;

[0066] Figure 21B yes Figure 21A A partial enlarged schematic diagram;

[0067] Figure 22A yes Figure 1 A schematic diagram of the assembly structure of the powder container, dose protection plate and dose assembly of the provided powder inhaler in the same state;

[0068] Figure 22B yes Figure 22A Schematic cross-section diagram;

[0069] Figure 23 yes Figure 1 A schematic cross-sectional view of the powder container, dose protection plate, and dose assembly of the provided powder inhaler in another state;

[0070] Figure 24A yes Figure 1 A schematic diagram of the assembly structure of the powder container, dose protection plate, and dose assembly of the provided powder inhaler in another state;

[0071] Figure 24B yes Figure 24A Schematic cross-section diagram;

[0072] Figure 25 This is a schematic structural diagram of the trigger mechanism of the powder inhalation device provided by the present application in one state;

[0073] Figure 26A is a schematic structural diagram of the trigger mechanism of the powder inhalation device provided by the present application in another state;

[0074] Figure 26B yes Figure 26A A partial enlarged schematic diagram;

[0075] Figure 27A is a schematic structural diagram of the trigger mechanism of the powder inhalation device provided by the present application in another state;

[0076] Figure 27B yes Figure 27A A partial enlarged schematic diagram; Figure 28 is a schematic structural diagram of the trigger mechanism of the powder inhalation device provided by the present application in another state;

[0077] Figure 29A is a schematic structural diagram of the trigger mechanism of the powder inhalation device provided by the present application in another state;

[0078] Figure 29B yes Figure 29A A partial enlarged schematic diagram;

[0079] Figure 30A This is a schematic diagram of the assembly structure of the pawl and the mounting base of the powder inhalation device provided by the present application when they are in the same state;

[0080] Figure 30B yes Figure 30A A partial enlarged schematic diagram;

[0081] Figure 31A is a schematic diagram of the assembly structure of the pawl and the mounting seat of the powder inhalation device provided by the present application in another state;

[0082] Figure 31B yes Figure 31A A partial enlarged schematic diagram;

[0083] Figure 32A yes Figure 25 A schematic diagram of the structure of the pawl of the trigger mechanism is provided at an angle;

[0084] Figure 32B yes Figure 32A A schematic diagram of the structure of the pawl at another angle is provided;

[0085] Figure 33A yes Figure 25 A schematic structural diagram of an embodiment of an air intake baffle of a trigger mechanism provided at an angle;

[0086] Figure 33B yes Figure 33A A schematic diagram of the structure of the air intake baffle at another angle is provided;

[0087] Figure 33C yes Figure 25 A schematic structural diagram of another embodiment of the air intake baffle of the trigger mechanism provided at an angle;

[0088] Figure 34A yes Figure 25 A schematic diagram of the structure of the trigger mechanism bracket at an angle is provided;

[0089] Figure 34B yes Figure 34A A schematic diagram of the structure of the provided bracket at another angle;

[0090] Figure 35A yes Figure 25 A schematic diagram of the assembly structure of an embodiment of the trigger mechanism provided, wherein the air intake baffle and the bracket are at an angle in a state;

[0091] Figure 35B yes Figure 35A Provided is a schematic diagram of the assembly cross section of the air intake baffle and bracket;

[0092] Figure 35C yes Figure 25 A schematic cross-sectional view of another embodiment of the assembly of the air intake baffle and bracket of the trigger mechanism is provided;

[0093] Figure 36 yes Figure 25 A schematic diagram of the assembly structure of the air intake baffle and the bracket of the trigger mechanism at an angle in another state is provided;

[0094] Figure 37 yes Figure 25 A schematic diagram of the assembly structure of the air intake baffle and the bracket of the trigger mechanism at an angle in another state is provided;

[0095] Figure 38 yes Figure 25 A schematic diagram of the structure of the dose protection plate of the trigger mechanism provided;

[0096] Figure 39A yes Figure 38A schematic diagram of the assembly structure of the dose protection plate and the delivery mechanism in the same state is provided;

[0097] Figure 39B yes Figure 38 A schematic diagram of the assembly structure of the dose protection plate and the delivery mechanism in another state is provided;

[0098] Figure 40A This is a schematic diagram of the assembly structure of the pawl and connecting rod of the powder inhalation device provided by the present application when they are in the same state;

[0099] Figure 40B is a schematic diagram of the assembly structure of the pawl and the connecting rod of the powder inhalation device provided by the present application in another state;

[0100] Figure 40C is a schematic diagram of the assembly structure of the pawl and the connecting rod of the powder inhalation device provided by the present application in another state;

[0101] Figure 40D is a schematic diagram of the assembly structure of the pawl and the connecting rod of the powder inhalation device provided by the present application in another state;

[0102] Figure 41 yes Figure 1 A schematic structural diagram of the lower housing of the provided powder inhalation device;

[0103] Figure 42A This is a structural schematic diagram of an embodiment of a deaggregation mechanism of a powder inhalation device provided by the present application;

[0104] Figure 42B yes Figure 42A A schematic cross-sectional view of the disaggregation mechanism is provided;

[0105] Figure 43 yes Figure 42A A schematic structural diagram of a cyclone component of a deagglomeration mechanism is provided;

[0106] Figure 44A yes Figure 42A A schematic structural diagram of a flow guide member of a provided deagglomeration mechanism;

[0107] Figure 44B yes Figure 44A A schematic cross-sectional view of the provided flow guide;

[0108] Figure 45 This is a schematic structural diagram of another embodiment of the deagglomeration mechanism of the powder inhalation device provided by the present application;

[0109] Figure 46 yes Figure 45 A schematic structural diagram of a cyclone component of a deagglomeration mechanism is provided;

[0110] Figure 47 yes Figure 45 A schematic structural diagram of a flow guide member of a provided deagglomeration mechanism;

[0111] Figure 48 is an aerodynamic particle size distribution graph of the first powder in the powder inhalation device;

[0112] Figure 49 is an aerodynamic particle size distribution graph of the second powder in the powder inhalation device;

[0113] Figure 50A yes Figure 1 A schematic diagram of the structure of the counting mechanism of the provided powder inhalation device;

[0114] Figure 50B yes Figure 50A A schematic diagram of the exploded structure of the counting mechanism provided;

[0115] Figure 51 yes Figure 50A A schematic diagram of the structure of the units counting wheel of the provided counting mechanism;

[0116] Figure 52 yes Figure 50A A schematic structural diagram of the counter base of the provided counting mechanism;

[0117] Figure 53 yes Figure 50A A schematic structural diagram of the tens counting wheel of the counting mechanism provided.

[0118] Figure Number:

[0119] Powder inhalation device 100; housing 1; upper housing 11; lower housing 12; rotating shaft 121; digital display window 122; nozzle 13; external air inlet 14; grille 15; outer cover 2; cover body 21; mounting portion 211; shaft hole 212; sealing groove 213; cam 22; flat section 221; first arc surface section 222; limiting protrusion 223; second arc surface section 224; sealing ring 3; powder container 41; storage chamber 411; compressed air port 412; powder outlet 413; pressure relief hole 414; accommodating chamber 415; airway groove 416; air inlet port 417; raised portion 418; third accommodating groove 419; mounting post 410; air flow channel Q1; connecting rod 42; abutting end 421; raised structure 422; guide rib 423; Counting block 424; first step surface 425; second step surface 426; pressing plate 43; air bag 44; compression spring 45; waterproof breathable membrane 46; mounting seat 51; guide groove 512; engaging portion 513; slide groove 514; first side surface 515; second side surface 516; first avoidance groove 517; powder inlet 518; pressure relief port 519; port 5191; dosage assembly 52; slider 521; first elastic arm buckle 524; first surface 526; second surface 527; first limiting wall 528; second limiting wall 529; first accommodating groove 530; second avoidance groove 532; reset boss 533; thickened portion 534; extruding elastic arm 535; third avoidance groove 537; second elastic arm buckle 538; rib 539; first elastic Component 536; dose plate 522; second accommodating groove 531; metering cup 523; fifth elastic component 525; dose protection plate 61; first extension portion 611; second extension portion 612; pawl 62; first rotating shaft 621; plate body 622; first cantilever 623; hook 6231; second cantilever 624; first abutting portion 6241; abutting arc surface 6242; third cantilever 627; second abutting portion 628; pressing block 629; first stopper 620; second stopper 625; third stopper 6221; fourth cantilever 6222; third step surface 601; fourth step surface 602; air intake baffle 63; second rotating shaft 631; door panel 632; swinging component 633; ​​connecting portion 634; bending portion 635; shielding portion 636 ; first arc surface 637; counterweight 638; locking arc surface 639; first inclined surface 6331; second inclined surface 6332; first partition 630; reinforcement portion 650; bracket 64; trigger air inlet channel 641; air inlet 642; first side wall 643; second side wall 644; third side wall 645; fourth side wall 646; first air inlet groove 647; second air inlet groove 648; second arc surface 649; second partition 640; second elastic member 65; third elastic member 66; fourth elastic member 67; swirl member 71; swirl groove 711; first fin 712; second fin 713; first tangential air inlet groove 714; second tangential air inlet groove 715; mixing groove 716; first tangential air inlet 717; second tangential air inlet 718;Cylindrical protrusion 719; inclined guide rib 710; baffle 78; guide member 72; powder outlet channel 721; plate-shaped portion 722; inclined guide rib 723; inclined guide surface 724; connecting rib 725; swirl chamber 73; powder outlet 74; first tangential air inlet channel 75; second tangential air inlet channel 76; mixing chamber 77; counter base 81; first mounting slot 811; second mounting slot 812; third mounting slot 813; buckle post 814; limit spring arm 815; units counter wheel 82; toothed shift post 822; tens counter wheel 83; mounting hole 831; counter intermediate gear 84. DETAILED DESCRIPTION

[0120] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0121] The terms "first", "second" and "third" in the embodiments of the present application are only used for descriptive purposes and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second" and "third" may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally also include steps or units that are not listed, or may optionally also include other steps or units inherent to these processes, methods, products or devices.

[0122] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0123] See Figures 1 to 7B , Figure 1 This is a schematic structural diagram of the powder inhalation device provided by the present application in one state. Figure 2 is a schematic structural diagram of the powder inhalation device provided by the present application in another state, Figure 3 yes Figure 1A schematic cross-sectional view of a powder inhalation device is provided, Figure 4A yes Figure 2 A schematic cross-sectional view of a powder inhalation device is provided, Figure 4B yes Figure 4A A partially enlarged schematic diagram of the powder inhalation device provided, Figure 4C yes Figure 4A A partially enlarged schematic diagram of the airflow channel of the powder inhalation device provided, Figure 5 yes Figure 1 The schematic diagram of the structure of the powder inhalation device with the outer cover removed is provided. Figure 6 yes Figure 1 A schematic diagram of the structure of the powder inhalation device provided with the shell removed at an angle. Figure 7A yes Figure 1 A schematic diagram of the structure of the outer cover of the powder inhalation device provided, Figure 7B yes Figure 7A A partial enlarged schematic diagram of the outer cover is provided.

[0124] See also Figures 1 to 7B The present application provides a powder inhalation device 100, which includes a shell 1, various functional mechanisms, and an outer cover 2, wherein the various functional mechanisms are arranged in the shell 1, and the outer cover 2 is rotatably connected to the shell 1 and can be limited to rotate back and forth between a first position and a second position. Specifically, the shell 1 includes a suction nozzle 13. When the outer cover 2 is in the first position, the outer cover 2 is in a closed state, and the outer cover 2 covers the suction nozzle 13. When the outer cover 2 is in the second position, the outer cover 2 is in an open state, and the outer cover 2 does not cover the suction nozzle 13, and the suction nozzle 13 is exposed. The outer cover 2 cooperates with the various functional mechanisms, and the interlocking action of the various functional mechanisms is achieved through the back-and-forth rotation of the outer cover 2 between the first position and the second position, so that the powder inhalation device 100 can achieve the powder dispensing function of medicinal powder or the like. The back-and-forth rotation in the present application refers to reciprocating along a repeated path, and the directions of the two rotations are opposite, for example, rotating clockwise from the first position to the second position, and then rotating counterclockwise from the second position back to the first position.

[0125] For details, see Figures 1 to 5 The housing 1 includes an upper housing 11 and a lower housing 12. The upper housing 11 and the lower housing 12 are interconnected and cooperate to form a storage space, in which the various functional mechanisms are arranged. The outer cover 2 is rotatably connected to the lower housing 12, so that it can rotate back and forth between a first position and a second position to realize the opening and closing processes. The outer cover 2 and the lower housing 12 can be rotatably connected by a rotating shaft 121 or by an arc-shaped slide rail. The shape and structure of the upper housing 11, the lower housing 12, and the outer cover 2 are not limited, and the materials can be metal, plastic, etc.

[0126] See also Figure 7A and Figure 7BThe outer cover 2 includes a cover body 21 and a cam 22. The cover body 21 and the cam 22 can be fixedly connected by welding, gluing, etc., or can be integrally formed. Specifically, the cover body 21 includes two mounting portions 211 arranged opposite to each other along the first direction A1. In one embodiment, the two cams 22 are arranged on the inner surfaces of the two mounting portions 211 in a one-to-one correspondence. The cams 22 and the cover body 21 are integrally formed. The bottom end of the lower shell 12 is provided with a rotating shaft 121 (such as Figure 5 As shown in FIG. 2 , the two mounting portions 211 are respectively provided with an axial hole 212, which passes through the mounting portion 211 and the corresponding cam 22. The two mounting portions 211 of the outer cover 2 are assembled and connected to the lower housing 12 by means of the rotating shaft 121 and the axial hole 212, thereby realizing the rotational connection between the outer cover 2 and the housing 1. Specifically, the center of the cam 22 is eccentric with the axial hole 212.

[0127] like Figure 1 and Figure 2 As shown, the powder inhalation device 100 further includes a sealing ring 3. Specifically, a sealing groove 213 is provided on the outer side of the mounting portion 211 of the outer cover 2 (as shown in FIG. Figure 7A As shown in FIG, the axial hole 212 of the mounting portion 211 is provided on the bottom wall of the sealing groove 213, and the sealing ring 3 is correspondingly embedded in the sealing groove 213 to perform sealing, thereby ensuring the consistency of the airway and the consistency of the suction resistance of the powder inhalation device 100, and preventing gas from entering the housing 1 from the connection position between the axial hole 212 of the mounting portion 211 of the outer cover 2 and the rotating shaft 121 of the lower housing 12.

[0128] The functional mechanism includes an air compression mechanism, a delivery mechanism, a trigger mechanism, a deaggregation mechanism, and a counting mechanism. The rotation of the outer cover 2 during the opening process drives the air compression mechanism to realize the air compression function, and after the air compression is completed, the delivery mechanism realizes the powder delivery function to deliver the powder such as medicine powder to the position of the air flow channel Q1 of the powder inhalation device 100 (such as Figure 4B As shown, when the lid is fully opened, the trigger mechanism activates the inhalation trigger function, exposing the powder to the airflow channel Q1. The powder then flows through the airflow channel Q1 to the deaggregation mechanism. After being fully deaggregated by the deaggregation mechanism, the powder flows to the suction nozzle 13 and is ultimately inhaled by the user. During the closing process of the outer lid 2, the delivery mechanism, the air compression mechanism, and the trigger mechanism are reset, and the counting mechanism is activated to complete the counting process.

[0129] The various functional units are introduced below.

[0130] (1) Air compression mechanism

[0131] See Figures 8 to 24B , Figure 8 yes Figure 1 The schematic diagram of the structure of the air compression mechanism of the powder inhalation device provided, Figure 9 yes Figure 8A cross-sectional schematic diagram of the air compression mechanism is provided. Figure 10 yes Figure 8 The structural diagram of the connecting rod of the air compression mechanism is provided. Figure 11A yes Figure 8 A schematic diagram of the structure of the powder container of the air compression mechanism provided at an angle, Figure 11B yes Figure 11A The schematic diagram of the powder container provided is from another angle. Figure 12 yes Figure 11A A schematic cross-sectional view of a powder container is provided, Figure 13A yes Figure 1 A schematic diagram of the assembly structure of the delivery mechanism and connecting rod of the powder inhalation device is provided, Figure 13B yes Figure 13A A cross-sectional schematic diagram of the assembly structure of the delivery mechanism and the connecting rod is provided. Figure 14A yes Figure 13A A schematic diagram of the structure of the dosage assembly of the delivery mechanism is provided. Figure 14B yes Figure 14A A schematic cross-sectional view of a dosage assembly is provided, Figure 15A yes Figure 14A A schematic diagram of the structure of the slider of the dosage assembly is provided at an angle. Figure 15B yes Figure 15A The provided slider is a schematic diagram of the structure at another angle. Figure 16A yes Figure 14A A schematic diagram of the structure of the dosage plate of the dosage assembly is provided at an angle. Figure 16B yes Figure 16A The schematic diagram of the structure of the dosage plate provided is from another angle. Figure 17A yes Figure 1 A schematic structural diagram of a mounting base of a delivery mechanism of a powder inhalation device in one state at an angle is provided. Figure 17B yes Figure 17A The provided mounting base is shown in another structural diagram. Figure 17C yes Figure 17A The structural diagram of the provided mounting base at another angle, Figure 17D yes Figure 17C A partial enlarged schematic diagram of the mounting base is provided. Figure 17E yes Figure 1 A schematic structural diagram of a mounting base of a delivery mechanism of a powder inhalation device in another state at an angle is provided. Figure 17F yes Figure 17E A partial enlarged schematic diagram of the mounting base is provided. Figure 18A yes Figure 1 A schematic diagram of the assembly structure of the delivery mechanism and the connecting rod of the powder inhalation device in another state is provided. Figure 18B yes Figure 18A A cross-sectional schematic diagram of the assembly structure of the delivery mechanism and the connecting rod is provided. Figure 19A yes Figure 1 A schematic diagram of the assembly structure of the delivery mechanism and the connecting rod of the powder inhalation device in another state is provided. Figure 19B yes Figure 19A A cross-sectional schematic diagram of the assembly structure of the delivery mechanism and the connecting rod is provided. Figure 20A yes Figure 1 The provided schematic diagram of the assembly structure of the dosage assembly and the connecting rod of the powder inhaler in the same state, Figure 20B yes Figure 20A A partial enlarged schematic diagram, Figure 21A yes Figure 1 A schematic diagram of the assembly structure of the dosage assembly and the connecting rod of the powder inhaler device in another state is provided. Figure 21B yes Figure 21A A partial enlarged schematic diagram, Figure 22A yes Figure 1 A schematic diagram of the assembly structure of the powder container, dose protection plate and dose assembly of the powder inhaler provided in the same state, Figure 22B yes Figure 22A Schematic cross-section diagram, Figure 23 yes Figure 1 A schematic cross-sectional view of a powder container, a dose protection plate, and a dose assembly of a powder inhalation device in another state is provided. Figure 24A yes Figure 1 A schematic diagram of the assembly structure of the powder container, the dose protection plate and the dose assembly of the powder inhaler in another state is provided. Figure 24B yes Figure 24A Schematic cross-section of .

[0132] See also Figure 3 、 Figure 6 、 Figures 8 to 12 and Figures 20A to 24B The air compression mechanism is disposed within the housing 1 and includes a powder container 41 and a connecting rod 42, as well as a pressure plate 43, an air bag 44, and a compression spring 45. The powder container 41 has a storage chamber 411 for storing powder. The storage chamber 411 has a pressure port 412 at the top and a powder outlet 413 at the bottom. The air bag 44 is sleeved on the pressure port 412 at the top of the storage chamber 411 to achieve a fixed connection with the powder container 41. The pressure plate 43 is movably sleeved on the outside of the air bag 44 and the storage chamber 411. The compression spring 45 is disposed on the side of the air bag 44 away from the powder container 41. Specifically, the compression spring 45 is disposed on one side of the pressure plate 43, with one end of the compression spring 45 abutting against the pressure plate 43. The connecting rod 42 can move back and forth between a third position and a fourth position. In order to facilitate understanding of the function of the air compression mechanism, the delivery mechanism is briefly introduced here. The delivery mechanism includes a mounting seat 51 and a dosage assembly 52. ​​The mounting seat 51 is arranged on one side of the powder container 41. The mounting seat 51 and the powder container 41 can be assembled and connected by snapping, ultrasonic welding or gluing.

[0133] The dosing assembly 52 is slidably mounted on the mounting base 51. Specifically, the dosing assembly 52 includes a slider 521 and a dosing plate 522. The slider 521 is slidably mounted on the mounting base 51. The dosing plate 522 is connected to the slider 521 to move synchronously with the slider 521. The dosing plate 522 has a metering cup 523. The dosing assembly 52 is capable of reciprocating between a fifth position and a sixth position. When the dosing assembly 52 is in the fifth position, the metering cup 523 of the dosing plate 522 of the dosing assembly 52 corresponds to the bottom of the powder outlet 413 of the powder container 41, facilitating the compression mechanism to squeeze the powder in the storage chamber 411 from the powder outlet 413 into the metering cup 523 of the dosing plate 522 of the delivery mechanism during the compression process.

[0134] For details, see Figure 6 、 Figure 8 and Figure 9 One end of the connecting rod 42 is connected to the end of the pressure plate 43 away from the compression spring 45, and the other end abuts the cam 22 of the outer cover 2. During the opening and closing of the outer cover 2, the outer cover 2 can move back and forth between the first position and the second position. The rotation of the cam 22 of the outer cover 2 can cooperate with the compression spring 45 to drive the connecting rod 42 to move back and forth between the third position and the fourth position. When the outer cover 2 is in the first position, the compression spring 45 is in a compressed state. During the opening process of the outer cover 2, that is, during the process of the outer cover 2 rotating from the first position to the second position, the compression spring 45 continuously extends and drives the pressure plate 43 to move, thereby squeezing the airbag 44. The airbag 44 is compressed to pressurize the storage chamber 411, thereby realizing the air compression function, thereby facilitating the extrusion of the powder in the storage chamber 411 from the powder outlet 413 into the metering cup 523 of the dosage plate 522 of the delivery mechanism for easy inhalation by the user. During the opening process of the outer cover 2, the compression spring 45 provides the connecting rod 42 with a force to move from the third position to the fourth position, so that the outer cover 2 can smoothly move from the first position to the second position. During the closing process of the outer cover 2, that is, during the process of the outer cover 2 rotating and returning to the first position from the second position, the rotation of the cam 22 drives the connecting rod 42 to continuously push up, thereby driving the pressure plate 43 to move upward and return to its original position. The return of the pressure plate 43 drives the airbag 44 to continuously extend. When the outer cover 2 returns to the second position, that is, when the outer cover 2 is closed, the airbag 44 extends and returns to its original state, and the compression spring 45 returns to its initial compressed state.

[0135] Specifically, such as Figure 8 and Figure 9As shown, the top wall of the pressure plate 43 has a fixing hole (not marked in the figure), which is used to connect the top of the airbag 44. For example, the top of the airbag 44 can pass through the fixing hole, and part of the airbag 44 is confined outside the top wall of the pressure plate 43, and the other part is confined to the side of the top wall of the pressure plate 43 close to the air pressure port 412, so that the airbag 44 can be driven to expand and contract through the expansion and contraction of the compression spring 45 and the movement of the pressure plate 43. By driving the expansion and contraction of the airbag 44 by the pressure plate 43, the air compression efficiency of the airbag 44 can be improved, and the problem of the airbag 44 being unable to reset and causing the airbag 44 to work abnormally can be avoided. The airbag 44 can be made of silicone or PVC-like materials. The airbag 44 has a bellows-type structure with a small upper end and a large lower end. During the entire air compression process, the compression stroke of the airbag 44 is within the range of 3mm-10mm. By providing the airbag 44, the airbag 44 can pump air into the storage chamber 411 under the action of the pressure plate 43, thereby avoiding the problem that small particle powder in the storage chamber 411, such as powder with a particle diameter between 50um and 500um, cannot be discharged smoothly under the action of gravity alone and fill the measuring cup 523 due to the existence of van der Waals forces and adhesion forces between the powder particles, and solves the tailing effect at the end of powder filling, ensures that the powder is discharged smoothly and the dose discharged each time is consistent, thereby improving the consistency and accuracy of the dosage.

[0136] Specifically, such as Figure 8 、 Figure 9 、 Figures 11A to 12 During the powder filling process, when the dosage assembly 52 is in the fifth position, the metering cup 523 is located below the powder outlet 413 of the storage chamber 411 along the vertical direction. When the airbag 44 is compressed, the gas flows to the storage chamber 411 to prompt the powder to be filled into the metering cup 523. The powder in the storage chamber 411 mainly flows to the metering cup 523 by its own gravity. The compressed air in the airbag 44 only plays a certain auxiliary role in the powder filling.

[0137] Specifically, such as Figure 8 、 Figure 9 、 Figures 11A to 12The side wall of the storage chamber 411 of the powder container 41 has a pressure relief hole 414. The airbag 44 is mounted on the air compression port 412 and covers the pressure relief hole 414. One end of the pressure relief hole 414 is connected to the space between the airbag 44 and the storage chamber 411. The dosage assembly 52 of the delivery mechanism can move back and forth between a fifth position and a sixth position. Specifically, when the dosage assembly 52 is in the fifth position, the dosage assembly 52 blocks the pressure relief hole 414 away from the end of the airbag 44, so that the pressure relief hole 414 is not connected to the outside. During the air compression stroke of the airbag 44, that is, before the dosage assembly 52 moves to the sixth position, when the airbag 44 is compressed, air flows into the storage chamber 411, loosening the powder in the storage chamber 411 and discharging it into the metering cup 523, completing the powder filling. During this process, the airflow generated by the compression of the airbag 44 cannot flow through the pressure relief hole 414 and out of the interior of the powder container 41.

[0138] At the end of the compression stroke, that is, after powder filling is completed, during the delivery stroke, as the dosage assembly 52 of the delivery mechanism moves from the fifth position to the sixth position, the metering cup 523 of the dosage assembly 52 moves away from the bottom of the powder outlet 413. The movement of the dosage assembly 52 exposes the end of the pressure relief hole 414 away from the airbag 44, thereby allowing the space between the airbag 44 and the storage chamber 411 to communicate with the outside through the pressure relief hole 414. The connecting rod 42 continues to move toward the fourth position, driving the airbag 44 to continue to compress. During this process, the airflow generated by the compression of the airbag 44 is discharged from the interior of the powder container 41 through the pressure relief hole 414, causing the storage chamber 411 of the powder container 41 to release pressure. In other words, the pressure relief process of the storage chamber 411 of the powder container 41 occurs during the delivery stroke of the delivery mechanism, that is, during the movement of the dosage assembly 52 from the fifth position to the sixth position.

[0139] In some embodiments, the diameter of the pressure relief hole 414 is greater than or equal to 1.0 mm and less than or equal to 2.0 mm. For example, the diameter of the pressure relief hole 414 is 1.0 mm, 1.3 mm, 1.5 mm, 1.7 mm, 1.8 mm, 2.0 mm, or any other size within the aforementioned range. It will be appreciated that the diameter of the pressure relief hole 414 should not be too large or too small. Setting the diameter of the pressure relief hole 414 within the aforementioned range can ensure a sufficient pressure relief effect.

[0140] In some embodiments, during the entire compression process of the airbag 44, the airflow through the storage chamber 411 is less than the airflow through the pressure relief hole 414. Specifically, the ratio of the airflow through the pressure relief hole 414 to the airflow through the storage chamber 411 is approximately 2:1-5:1. Preferably, the ratio of the airflow through the pressure relief hole 414 to the airflow through the storage chamber 411 is approximately 4:1. In one embodiment, the initial height of the airbag 44 is 11.8 mm, which is equivalent to a volume of approximately 2194 mm. 3During the air compression stroke, i.e., the powder filling process, the airbag 44 is compressed by 2 mm, which is equivalent to a compressed volume of approximately 371.9 mm 3 During the delivery process, i.e., the airbag 44 is compressed and the storage chamber 411 is depressurized, the airbag 44 is compressed for a distance of 6 mm, which is equivalent to a compressed volume of approximately 1115.6 mm. 3 .

[0141] like Figure 3 and Figure 9 As shown, in some embodiments, the air compression mechanism further includes a waterproof breathable membrane 46, which covers the air compression port 412 and isolates the space between the airbag 44 and the air compression port 412 from the internal space of the storage chamber 411. Specifically, the waterproof breathable membrane 46 can be made using a PE sintering process and is provided with multiple micropores with a pore size of 5um-100um. The waterproof breathable membrane 46 can be used to block water vapor in the air from entering the storage chamber 411, preventing the powder in the storage chamber 411 from becoming ineffective due to moisture. The multiple micropores in the structure allow gas to pass through, so that the gas compressed by the airbag 44 can enter the storage chamber 411 through the waterproof breathable membrane 46 to facilitate loosening of the powder. At the same time, the waterproof breathable membrane 46 can also prevent the powder from entering the airbag 44 from the storage chamber 411, causing powder waste. The waterproof breathable membrane 46 can be installed by an interference fit with the side of the air compression port 412 at the top of the storage chamber 411. The waterproof breathable membrane 46 can filter impurities and water vapor in the powder to prevent the powder in the storage chamber 411 from getting damp, and can also prevent the powder in the storage chamber 411 from flying and leaking through the pressure relief hole 414, causing powder waste.

[0142] Specifically, the pressure relief hole 414 is provided on the side wall of the storage chamber 411, such as Figure 9 、 Figures 11A to 12 In one embodiment, the pressure relief hole 414 is a through hole provided in the side wall of the storage chamber 411. Preferably, the pressure relief hole 414 is a straight through hole extending from the top of the side wall of the storage chamber 411 to the bottom of the side wall of the storage chamber 411, and the pressure relief hole 414 is spaced apart from the interior of the storage chamber 411. One end of the pressure relief hole 414 communicates with the space between the waterproof breathable membrane 46 and the airbag 44, and the other end extends to the bottom surface of the powder container 41. The pressure relief hole 414 is not directly connected to the interior space of the storage chamber 411 and is relatively independent of the interior of the storage chamber 411.

[0143] During the movement of the dosage assembly 52 from the fifth position to the sixth position, that is, during the delivery stroke, when the airbag 44 is compressed, the gas directly enters the pressure relief hole 414 from the space between the waterproof breathable membrane 46 and the airbag 44 and is discharged from the powder container 41 through the pressure relief hole 414 to relieve the pressure in the space between the airbag 44 and the waterproof breathable membrane 46. It can be understood that one end of the pressure relief hole 414 is directly connected to the space between the waterproof breathable membrane 46 and the airbag 44, which can prevent the pressure relief hole 414 from being directly connected to the inside of the storage chamber 411. During the pressure relief process, the gas in the storage chamber 411 leaks directly from the pressure relief hole 414, causing the powder in the storage chamber 411 to fly or leak. At the same time, during the extension of the airbag 44, that is, during the airbag 44 inhalation process, external gas enters the space between the waterproof breathable membrane 46 and the airbag 44 from the pressure relief hole 414, and then enters the storage chamber 411 through the waterproof breathable membrane 46, preventing the pressure relief hole 414 from being directly connected to the inside of the storage chamber 411. During the airbag 44 inhalation process, external gas directly enters the storage chamber 411 from the pressure relief hole 414, bringing external water molecules into the storage chamber 411, causing the powder in the storage chamber 411 to fly or get damp, etc., causing waste.

[0144] In some embodiments, the pressure of the compression spring 45 is greater than or equal to 1N and less than or equal to 30N, and the compression speed of the airbag 44 is greater than or equal to 0.1mm / s and less than or equal to 10mm / s. It is understood that by controlling the pressure of the compression spring 45 at the top of the airbag 44 and the compression speed of the airbag 44 within the above ranges, the problem of the airbag 44 compressing too quickly, which may cause the drug powder to be compacted, can be avoided. At the same time, the problem of the airbag 44 compressing too slowly, which may not facilitate the passage of gas through the waterproof breathable membrane 46 and into the storage chamber 411, thereby failing to loosen the powder and improve the discharge of drug powder from the storage chamber 411 of the powder container 41 into the measuring cup 523, can be avoided. Furthermore, the relatively low pressure of the compression spring 45 means that during the lid closing process and the resetting process of the air pressure mechanism, the force required to resetting the compression spring 45 is smaller, making it easier for the compression spring 45 to be pushed, thereby making it easier to resetting the compression spring 45 and other structural components such as the airbag 44.

[0145] like Figure 9 and Figure 12 As shown, the size of the air pressure port 412 at the top of the storage chamber 411 is larger than the size of the powder outlet 413 at the bottom of the storage chamber 411, and the powder outlet 413 of the powder container 41 is eccentrically arranged relative to the air pressure port 412. Specifically, the interior of the storage chamber 411 is in a linear tapered state. In the vertical direction, the powder outlet 413 and the air pressure port 412 are not on the same axis, which allows the powder in the storage chamber 411 to flow more smoothly to the position of the powder outlet 413.

[0146] In one embodiment, the shape of the powder outlet 413 is circular, and the diameter of the circle is greater than or equal to 0.5 mm and less than or equal to 5 mm. For example, the diameter of the powder outlet 413 is 0.5 mm, 0.8 mm, 1 mm, 1.3 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.6 mm, 4 mm, 4.5 mm, 4.8 mm, 5 mm, or any other value. In another embodiment, the shape of the powder outlet 413 can also be set to an elliptical racetrack shape (such as Figure 11B As shown), the length of the powder outlet 413 is greater than or equal to 3 mm and less than or equal to 10 mm, and the width is greater than or equal to 2 mm and less than or equal to 5 mm. For example, the length of the powder outlet 413 is 3 mm, 3.5 mm, 3.8 mm, 4 mm, 4.5 mm, 4.7 mm, 5 mm, 5.3 mm, 5.5 mm, 5.8 mm, 6 mm, 6.5 mm, 6.7 mm, 7 mm, 7.5 mm, 7.6 mm, 8 mm, 8.3 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm or any other value, and the width of the powder outlet 413 is 2 mm, 2.3 mm, 2.5 mm, 2.8 mm, 3 mm, 3.2 mm, 3.5 mm, 3.8 mm, 4 mm, 4.1 mm, 4.5 mm, 4.7 mm, 5 mm or any other value, as long as the length of the powder outlet 413 is greater than the width of the powder outlet 413. The size of the powder outlet 413 should not be too small to avoid the problem of powder not filling the measuring cup 523. It is understood that the particle size of the powder stored in the storage chamber 411 of the powder container 41 is greater than or equal to 50 μm and less than or equal to 500 μm. For example, the particle size of the powder is any value such as 50 μm, 60 μm, 70 μm, 80 μm, 100 μm, 120 μm, 150 μm, 170 μm, 200 μm, 230 μm, 250 μm, 280 μm, 300 μm, 350 μm, 370 μm, 400 μm, 450 μm, 500 μm, etc. Setting the size of the powder outlet 413 within the above range allows the powder outlet 413 to be larger and the particle size of the powder stored in the storage chamber 411 to be smaller, thereby ensuring that the medicinal powder particles in the storage chamber 411 are discharged smoothly from the powder outlet 413, thereby avoiding the problem of poor powder discharge. In other embodiments, the powder outlet 413 may also be configured to have any other shape or size, as long as the powder in the storage chamber 411 can be smoothly discharged.

[0147] In this embodiment, by setting the size of the powder outlet 413 within the above-mentioned range, the particle size of the powder stored in the storage chamber 411 is greater than or equal to 50um and less than or equal to 500um. The powder in the storage chamber 411 is small-particle powder, and the size of the powder outlet 413 is larger. The powder in the storage chamber 411 can also flow into the measuring cup 523 through the powder outlet 413 by relying on its own gravity. By setting the pressure of the compression spring 45 within the range of greater than or equal to 1N and less than or equal to 30N, the speed at which the airbag 44 is compressed is greater than or equal to 0.1mm / s and less than or equal to 10mm / s, the pressure of the compression spring 45 is small, and the speed at which the airbag 44 is compressed is slow. During the air compression stroke, the amount of air flowing into the storage chamber 411 is small and the flow rate is slow, which will only cause a certain disturbance to the small particles of powder in the storage chamber 411, breaking up the powder and making the powder loose, so that it can flow more smoothly to the measuring cup 523 to complete the powder filling, avoiding the problem of excessive pressure of the compression spring 45 and too fast compression speed of the airbag 44, which causes the powder in the storage chamber 411 to be compacted. That is, in this embodiment, the above parameters are set within the above specific ranges. While solving the problem that the powder cannot be smoothly discharged from the storage chamber 411 and fill the measuring cup 523 under the action of gravity alone due to the existence of van der Waals forces and adhesion forces between small particle powders, it can also effectively avoid the powder in the storage chamber 411 from being compacted. At the same time, it also provides convenience for the resetting of the air compression mechanism, making the resetting of the air compression mechanism easier.

[0148] Specifically, in this embodiment, the small-particle powder in the storage chamber 411 is filled into the metering cup 523 primarily by its own gravity, with the air pressure of the airbag 44 merely playing a supporting role. The pressure of the compression spring 45 is set within a range of 1N or greater and 30N or less, which is relatively low. During the movement of the dosage assembly 52 from the fifth position to the sixth position, before the metering cup 523 leaves the position corresponding to the powder outlet 413, the airbag 44 is still pressing air into the storage chamber 411, and pressure relief has not yet begun. Due to the relatively low pressure of the compression spring 45, even if the compression spring 45 drives the airbag 44 to compress, the compression stroke of the airbag 44 is also very small, making it difficult to squeeze the powder between the dosage assembly 52 and the bottom surface of the powder container 41, thereby reducing the risk of powder jamming and waste between the dosage assembly 52 and the powder container 41.

[0149] See also Figures 11A to 12The side wall of the storage chamber 411 of the powder container 41 is further provided with a receiving chamber 415, which is used to store a desiccant. The storage chamber 411 and the receiving chamber 415 have a common side wall, and the common side wall can be made of a water-permeable material. The desiccant is sealed in the receiving chamber 415 by aluminum foil. At the same time, the desiccant is in contact with the common side wall, which can dry the powder in the storage chamber 411, so that the desiccant in the receiving chamber 415 can absorb the water vapor in the storage chamber 411 to prevent the powder in the storage chamber 411 from getting damp.

[0150] The connecting rod 42 can move back and forth between the third position and the fourth position. Figure 6 、 Figure 7A and Figure 7B As shown, the end of the connecting rod 42 away from the pressure plate 43 is an abutting end 421, which abuts against the cam 22 of the outer cover 2. When the outer cover 2 is in the first position, that is, when the outer cover 2 is in the closed state, the cam 22 of the outer cover 2 restricts the connecting rod 42 to the third position. During the process of the outer cover 2 rotating from the first position to the second position, that is, during the process of opening the outer cover 2, the cam 22 of the outer cover 2 gradually gives way, allowing the compression spring 45 to drive the connecting rod 42 to move from the third position to the fourth position. Specifically, during the process of opening the outer cover 2, the compression spring 45 drives the connecting rod 42 to move downward in the vertical direction.

[0151] The rotational distance of the outer cover 2 from the first position to the second position is defined as the opening distance. This distance includes the sequentially arranged compression distance and delivery distance, as well as the unlocking distance, which is performed synchronously with the compression distance and delivery distance. During the compression distance, the connecting rod 42 begins to move from the third position to the fourth position. The compression spring 45 compresses the airbag 44, pressurizing air into the powder container 41 to fill the powder in the powder container 41 into the metering cup 523 of the dosage assembly 52. ​​The angle of the outer cover 2 in the first position is defined as 0 degrees. The angle of the outer cover 2 in the second position ranges from 120 to 180 degrees. In one specific embodiment, the angle of the outer cover 2 in the second position is 135 degrees.

[0152] In one embodiment, if Figure 7A and Figure 7BAs shown, the side surface of the cam 22 of the outer cover 2 includes a flat section 221, a first arcuate section 222, and a second arcuate section 224 connected in sequence. The flat section 221 has a stopper 223 on one end away from the first arcuate section 222. When the outer cover 2 is in the first position, i.e., when the outer cover 2 is closed, the abutting end 421 of the connecting rod 42 abuts against the side of the stopper 223 of the cam 22 away from the flat section 221. The stopper 223 can initially position and initially limit the connecting rod 42. When the cover is initially opened, the abutting end 421 of the connecting rod 42 needs to pass over the stopper 223. The movement of the air compressor mechanism needs to overcome the resistance of the abutting end 421 of the connecting rod 42 passing over the stopper 223. The provision of the stopper 223 can effectively prevent accidental opening of the cover and inadvertent triggering of the air compressor mechanism.

[0153] During the air compression stroke, delivery stroke and unlocking stroke, the rotation of the outer cover 2 causes the compression spring 45 to drive the connecting rod 42 to continuously move from the third position to the fourth position in the vertical direction. During the air compression stroke and delivery stroke, the abutting end 421 of the connecting rod 42 abuts against different sections of the side of the cam 22 of the outer cover 2.

[0154] Specifically, during the rotation of the outer cover 2 from the first position to the second position, an air compression stroke is first performed. During the air compression stroke, the abutting end 421 of the connecting rod 42 first needs to pass over the limiting protrusion 223. In one specific embodiment, during the movement of the abutting end 421 of the connecting rod 42 from the end of the limiting protrusion 223 away from the flat section 221 to the end of the limiting protrusion 223 closer to the flat section 221, the limiting protrusion 223 pushes the connecting rod 42 upward, and the connecting rod 42 moves upward by approximately 0.6 mm. The upward movement of the connecting rod 42 compresses the compression spring 45, and the airbag 44 expands. After the abutting end 421 of the connecting rod 42 passes over the limiting protrusion 223, it slides and abuts against the flat section 221 of the cam 22. Then, the abutting end 421 of the connecting rod 42 slides along the flat section 221 and the first arc surface section 222 to the connection position between the first arc surface section 222 and the second arc surface section 224. During this process, the compression spring 45 stretches, and the connecting rod 42 moves downward under the action of the compression spring 45, and the outer cover 2 is instantly opened. The pressure plate 43 of the air compression mechanism moves downward synchronously under the drive of the compression spring 45, squeezing the airbag 44 so that the airbag 44 is compressed and pumps air into the storage chamber 411, realizing the air compression function. In one specific embodiment, during the process of the abutting end 421 of the connecting rod 42 sliding from the end of the flat section 221 away from the second arc surface section 224 to the connection position between the first arc surface section 222 and the second arc surface section 224, the downward travel of the connecting rod 42 is approximately 2 mm.

[0155] During the air compression stroke, the abutting end 421 of the connecting rod 42 first needs to pass over the limiting protrusion 223, and then slide along the plane section 221 and the first arc surface section 222. A large force is required for the connecting rod 42 to pass over the limiting protrusion 223. Therefore, during the air compression stroke in the process of opening the outer cover 2, the torque shows a trend of first increasing and then decreasing, which can effectively prevent the cover from being opened by mistake and the air compression mechanism from being triggered by mistake.

[0156] In one embodiment, during the air compression stroke, the outer cover 2 rotates from 0 to 50 degrees. At the end of the air compression stroke, the delivery mechanism has not yet moved, and the metering cup 523 is still located below the powder outlet 413. At this time, the angle of the outer cover 2 does not fully expose the suction nozzle 13 of the powder inhalation device 100. That is, the outer cover 2 still partially covers the suction nozzle 13. At this time, the user's lips will be interfered with by the outer cover 2 and cannot hold the suction nozzle 13. This can prevent the suction nozzle 13 from being fully exposed before the delivery mechanism moves, that is, before the powder in the metering cup 523 is delivered to the powder inhalation position, causing the user to inhale from the suction nozzle 13, thereby affecting the user experience.

[0157] It can be understood that in the present application, the powder particles in the storage chamber 411 are relatively small and are mainly filled into the metering cup 523 by gravity. The pressure of the compression spring 45 is relatively small, and the compression speed of the airbag 44 is relatively low. During the air compression stroke, the compression of the airbag 44 only plays an auxiliary role in filling the powder into the metering cup 523. Therefore, before the delivery mechanism is triggered, that is, before the delivery stroke begins (the dosage assembly 52 of the delivery mechanism has not left the fifth position, and the metering cup 523 is still located below the powder outlet 413), even if the outer cover 2 is repeatedly opened or closed within the above-mentioned angle range, that is, the air compression stroke is repeatedly performed, it is not easy for the powder in the metering cup 523 to be compacted or the powder dosage in the metering cup 523 to be uneven or inconsistent due to the repeated compression of the airbag 44, and the consistency of the administered dosage will not be affected.

[0158] In other embodiments, the side surface of the cam 22 of the outer cover 2 may not include the flat section 221. That is, the side surface of the cam 22 may only include a first arcuate surface section 222 and a second arcuate surface section 224 connected to each other, with a stopper 223 provided at the end of the first arcuate surface section 222 away from the second arcuate surface section 224. During the compression stroke, the abutting end of the connecting rod 42 may also move from the end of the stopper 223 away from the first arcuate surface section 222 to the connection between the first and second arcuate surface sections 222, 224. The specific shape of the side surface of the cam 22 can be designed as needed and is not limited in this application.

[0159] After the compression stroke is completed, the connecting rod 42 continues to move downward in the vertical direction to perform the delivery stroke. During the delivery stroke, the connecting rod 42 continues to move toward the fourth position and releases the retaining force of the mounting seat 51 on the dosage assembly 52, thereby triggering the delivery mechanism. Specifically, during the delivery stroke, the abutting end 421 of the connecting rod 42 slides along the second arc surface segment 224 on the side of the cam 22, from the connection between the first arc surface segment 222 and the second arc surface segment 224 to the end of the second arc surface segment 224 away from the first arc surface segment 222. That is, at the end of the delivery stroke, the abutting end 421 of the connecting rod 42 abuts the end of the second arc surface segment 224 away from the first arc surface segment 222, at which point the connecting rod 42 is in the fourth position. Specifically, after the abutting end 421 of the connecting rod 42 passes the connection between the first and second arcuate segments 222 and 224, it momentarily slides on the second arcuate segment 224, causing the connecting rod 42 to momentarily move downward, instantly releasing the restraint on the delivery mechanism and rapidly triggering the delivery mechanism to move to the sixth position. In one embodiment, the connecting rod 42 moves downward approximately 6 mm within the delivery stroke.

[0160] After the compression stroke, during the delivery stroke, the abutting end 421 of the connecting rod 42 must first pass over the junction of the first arcuate segment 222 and the second arcuate segment 224 to trigger the delivery mechanism's dosage assembly 52 to move to the sixth position. This requires a significant force. Therefore, during the delivery stroke during the opening process of the outer cover 2, the torque first increases and then decreases, effectively preventing inadvertent triggering of the delivery mechanism.

[0161] During the delivery stroke, connecting rod 42 moves downward, compression spring 45 continues to extend, and pressure plate 43 of the air compression mechanism simultaneously moves downward under the drive of compression spring 45, squeezing airbag 44 and causing it to continue to compress. During this process, dosage assembly 52 of the delivery mechanism moves from the fifth position to the sixth position, exposing the port of pressure relief hole 414, which communicates with the outside. The airbag 44 is compressed to perform the pressure relief process. In other words, the pressure relief process occurs simultaneously during the delivery stroke.

[0162] like Figures 22A to 24B As shown, the dosage assembly 52 of the delivery mechanism can be driven by the first elastic member 536 of the powder inhalation device 100 to move from the fifth position to the sixth position. The fifth position is the powder filling position, and the sixth position is the powder inhalation position. Figure 3 、 FIG. 22A to FIG. 22B As shown, when the dosage assembly 52 is in the fifth position, the powder outlet 413 of the powder container 41 is aligned with the metering cup 523 of the dosage plate 522. When the dosage assembly 52 is in the sixth position, as shown Figure 4A 、 Figure 4B 、 Figures 23 to 24BAs shown, the metering cup 523 of the dosing plate 522 is offset from the powder outlet 413 of the powder container 41, located on the airflow channel Q1 and corresponding to the powder inlet 518 of the deaggregation mechanism of the powder inhalation device 100. In one embodiment, during the delivery stroke, the outer cover 2 rotates from 50 degrees to 135 degrees, and the metering cup 523 of the delivery mechanism moves from the powder filling position to the powder inhalation position, completing the powder delivery process. At the end of the delivery stroke, the connecting rod 42 moves to the fourth position, and the dosing assembly 52 of the delivery mechanism moves to the sixth position.

[0163] At the end of the delivery stroke, the nozzle 13 of the powder inhalation device 100 is exposed, so that the user can inhale from the nozzle 13 to perform the inhalation triggering process, thereby triggering the trigger mechanism and facilitating the powder to enter the deaggregation mechanism.

[0164] During the opening stroke of the outer cover 2, the unlocking stroke is performed synchronously with the air compression stroke and the delivery stroke. That is, at the beginning of the air compression stroke, the unlocking stroke begins when the connecting rod 42 moves from the third position to the fourth position, and the unlocking stroke ends when the connecting rod 42 moves to the fourth position at the end of the delivery stroke. Before the unlocking stroke begins, that is, when the connecting rod 42 is in the third position, the connecting rod 42 limits the pawl 62 of the trigger mechanism. During the unlocking stroke, the connecting rod 42 moves downward to release the limit on the pawl 62 of the trigger mechanism, and the pawl 62 abuts against the air intake baffle 63 of the trigger mechanism and is limited to the ninth position by the air intake baffle 63. The positional relationship between the connecting rod 42, the pawl 62, and the air intake baffle 63 of the trigger mechanism during the unlocking stroke will be described in detail in the subsequent sections and will not be further explained here.

[0165] Specifically, such as Figure 10 As shown, the connecting rod 42 of the air compression mechanism includes a protruding structure 422, which is provided on the side wall of the connecting rod 42. The protruding structure 422 can be fixedly connected to the connecting rod 42 by gluing, snap connection, etc., or can be integrally formed with the connecting rod 42. When the outer cover 2 is in the first position, that is, when the powder inhalation device 100 is in the closed state, when the connecting rod 42 is in the third position, the protruding structure 422 of the connecting rod 42 abuts against the dosage assembly 52 of the delivery mechanism (as shown in FIG. Figure 20A and Figure 20B As shown), and the mounting seat 51 limits the dosage assembly 52, the raised structure 422 limits the dosage assembly 52 to the fifth position, during the opening process of the outer cover 2, as shown Figure 21A and Figure 21B As shown, during the movement of the connecting rod 42 from the third position to the fourth position, the protruding structure 422 of the connecting rod 42 gradually releases the restriction on the dosage assembly 52 and triggers the release of the restriction between the dosage assembly 52 and the mounting seat 51 .

[0166] Further, such as Figure 10As shown, the protruding structure 422 of the connecting rod 42 is further provided with a guide rib 423, which is provided on the side of the protruding structure 422. The guide rib 423 can be fixedly connected to the protruding structure 422 by gluing, snap connection, etc., or can be integrally formed with the protruding structure 422. The mounting seat 51 of the delivery mechanism is provided with a guide groove 512, and the guide rib 423 is slidably provided in the guide groove 512 of the mounting seat 51 (see Figure 17A ), during the reciprocating motion of the connecting rod 42 between the third and fourth positions, the guide rib 423 slides within the guide groove 512, ensuring stable vertical movement of the connecting rod 42. This prevents the connecting rod 42 from shifting left or right during movement, which could cause the dose slider 521 of the delivery mechanism to move out of position. The guide groove 512 limits the connecting rod 42 in the direction of movement of the slider 521, thus avoiding assembly inconvenience and inaccurate positioning issues that would otherwise arise from limiting the connecting rod 42 via the housing 1.

[0167] See also Figure 11B As shown, the bottom of the powder container 41 also has an airway groove 416, which is spaced apart from the powder outlet 413 in the first direction A1. The airway groove 416 extends along the second direction A2. The first direction A1 and the second direction A2 are perpendicular to each other and are both perpendicular to the vertical direction. One end of the airway groove 416 has an air inlet port 417, which is connected to the external atmosphere. The external atmosphere enters the airway groove 416 through the air inlet port 417. Furthermore, the bottom wall of the airway groove 416 has a protrusion 418, which protrudes from the bottom surface of the airway groove 416. Preferably, the shape of the protrusion 418 matches the shape of the metering cup 523 on the dosage plate 522. Figure 4B As shown, when the dosage assembly 52 of the delivery mechanism is in the sixth position, i.e., the powder inhalation position, the protrusion 418 is arranged corresponding to the metering cup 523 of the dosage plate 522 of the dosage assembly 52, and the metering cup 523 of the dosage plate 522 is directly opposite to the protrusion 418 of the bottom wall of the airway groove 416, so that when the user inhales, the gas entering the airway groove 416 from the air inlet port 417 can be guided when flowing through the airway groove 416, so that the airflow can flow through the surface of the protrusion 418, and the airflow flowing through the surface of the protrusion 418 can be guided to pass through the inside of the metering cup 523, so that the airflow completely flows through the entire metering cup 523, thereby more smoothly bringing out the powder in the metering cup 523, ensuring that the powder is smoothly emptied, improving the powder emptying rate and utilization rate, and thereby ensuring the consistency and accuracy of drug administration, improving drug administration precision, and avoiding waste.

[0168] Preferably, Figure 4CAs shown, the angle α formed between the line connecting the lowest point and the highest point of the raised portion 418 on the bottom wall of the airway groove 416 and the horizontal plane is not less than 20°, that is, the angle α between the line connecting the top of the raised portion 418 and the bottom surface of the airway groove 416 and the horizontal plane is greater than or equal to 20°. The above arrangement can be more conducive to emptying the powder in the measuring cup 523 and improving the powder utilization rate.

[0169] In one embodiment, see Figure 4A 、 Figure 4B and Figure 11B As shown, the corners of the bottom wall and the side wall of the airway groove 416 are smoothly transitioned through an arc surface, that is, a chamfer is provided at the end of the airway groove 416 away from the air inlet port 417. The chamfer can be a rounded corner, or, in other embodiments, the chamfer can also be an oblique angle. It can be understood that after the airflow flows through the airway groove 416 and brings out the powder in the measuring cup 523, it will enter the mounting seat 51 of the delivery mechanism at the bottom of the powder container 41 and flow to the deagglomeration mechanism to deliver the powder in the measuring cup 523 to the deagglomeration mechanism. When the airflow passes through the end of the airway groove 416 away from the air inlet port 417 and enters the mounting seat 51, the direction of the airflow will suddenly change. A chamfer is set at the end of the airway groove 416 away from the air inlet port 417, so that the corner of the bottom wall and the side wall of the airway groove 416 is smoothly transitioned through the arc surface, which can buffer the airflow and reduce the generation of vortexes, thereby effectively avoiding the problem of powder jamming and residue at the corner of the bottom wall and the side wall of the airway groove 416 when the corner of the bottom wall and the side wall of the airway groove 416 is a right angle, resulting in powder waste.

[0170] Further, such as Figure 11B As shown, the bottom of the powder container 41 further has a third accommodating groove 419, and the third accommodating groove 419 is spaced apart from the powder outlet 413 of the powder container 41, as shown in FIG. Figures 22A to 24B As shown, the third accommodating groove 419 is used to accommodate the dose protection plate 61 of the trigger mechanism, so that the dose protection plate 61 can move back and forth between the seventh position and the eighth position in the third accommodating groove 419. Preferably, the airway groove 416 is provided on the bottom wall of the third accommodating groove 419.

[0171] The following is a detailed introduction to the delivery agencies.

[0172] (2) Delivery Agency

[0173] See also Figures 13A to 24BThe powder inhalation device 100 includes a delivery mechanism disposed at the bottom of the powder container 41 of the air compression mechanism, and an air flow channel Q1 is formed between the delivery mechanism and the powder container 41 of the air compression mechanism. Specifically, the delivery mechanism includes a dosing assembly 52 and a mounting seat 51. The dosing assembly 52 is slidably disposed between the mounting seat 51 and the powder container 41 and is capable of reciprocating between a fifth position and a sixth position to deliver the powder in the powder container 41 to the air flow channel Q1.

[0174] The mounting seat 51 is used to limit the dosage assembly 52 to the fifth position. Specifically, one of the mounting seat 51 and the dosage assembly 52 of the delivery mechanism includes a first elastic arm buckle 524, and the other includes a snap-fit ​​portion 513 that cooperates with the first elastic arm buckle 524. Figure 13B 、 Figure 13C 、 Figure 15A 、 Figure 15B 、 Figures 17A to 24B As shown, in one embodiment, the mounting base 51 has a snap-fit ​​portion 513, and the dosage assembly 52 has a first elastic arm snap-fit ​​portion 524. In other embodiments, the mounting base 51 may be provided with the first elastic arm snap-fit ​​portion 524, and the dosage assembly 52 may be provided with the snap-fit ​​portion 513, so that the dosage assembly 52 is limited in position by the cooperation between the first elastic arm snap-fit ​​portion 524 and the snap-fit ​​portion 513, so that the dosage assembly 52 is limited to the fifth position before the delivery mechanism is triggered.

[0175] See also Figure 15A 、 Figure 15B 、 Figures 17A to 24B A surface of the mounting seat 51 has a slide groove 514. Specifically, the slide groove 514 is provided on the surface of the mounting seat 51 close to the powder container 41. The slide groove 514 has a first side surface 515 and a second side surface 516 that are oppositely disposed. The first side surface 515 and the second side surface 516 are oppositely disposed along the second direction A2. The engaging portion 513 is provided on the first side surface 515 of the slide groove 514. Specifically, the engaging portion 513 is a protrusion provided on the first side surface 515 of the slide groove 514. The dosage assembly 52 is slidably disposed in the slide groove 514 of the mounting seat 51. A first elastic arm buckle 524 is provided on one side of the dosage assembly 52. ​​One end of the first elastic arm buckle 524 abuts against the first side surface 515 of the slide groove 514 (as shown in FIG. 1 ). Figure 13B As shown). It can be understood that placing one end of the first elastic arm buckle 524 in contact with the first side surface 515 of the slide groove 514 can reduce the friction between the dosage assembly 52 and the mounting seat 51, thereby maintaining the stable movement of the dosage assembly 52 between the fifth position and the sixth position.

[0176] For details, see Figures 14A to 19BThe dosing assembly 52 includes a slider 521, a dosing plate 522, and a fifth elastic member 525. The slider 521 has a first surface 526 and a second surface 527 that are opposed to each other in a vertical direction. The dosing plate 522 is disposed on the first surface 526 of the slider 521. Specifically, the first surface 526 of the slider 521 has a first limiting wall 528 and a second limiting wall 529 spaced apart along the sliding direction of the slider 521. The dosing plate 522 is engaged between the first limiting wall 528 and the second limiting wall 529. The fifth elastic member 525 is disposed between the slider 521 and the dosing plate 522. A first elastic arm buckle 524 is disposed on the side of the slider 521. The fifth elastic member 525 may be a spring, a spring, or other structural member. By disposing the fifth elastic member 525 between the slider 521 and the dosing plate 522, the dosing plate 522 can be held in close contact with the bottom surface of the powder container 41. By providing the fifth elastic member 525, an effective elastic seal can be formed between the dose plate 522 and the powder container 41, thereby preventing powder such as medicine powder from leaking out from the gap between the dose plate 522 and the powder container 41, which is beneficial to improving the accuracy and consistency of the dosage. The fifth elastic member 525 can automatically and effectively adjust the pressure between the dose plate 522 and the bottom of the powder container 41 in real time, thereby avoiding the problem of excessive friction between the dose plate 522 and the bottom of the powder container 41 due to assembly gaps or powder jamming, resulting in the dose plate 522 being stuck and unable to move.

[0177] Specifically, such as Figure 14B As shown, in one embodiment, the fifth elastic member 525 includes two springs, and the two springs are arranged at intervals along the sliding direction of the slider 521. Specifically, the slider 521 slides along the first direction A1, and the two springs are arranged at intervals along the first direction A1 between the dose plate 522 and the slider 521.

[0178] Furthermore, the first surface 526 of the slider 521 has a first receiving groove 530 corresponding to the position of the spring. In the vertical direction, one end of the spring is located in the first receiving groove 530 and abuts against the bottom wall of the first receiving groove 530. And / or, the surface of the dose plate 522 near the slider 521 has a second receiving groove 531 corresponding to the position of the spring. In the vertical direction, the other end of the spring is located in the second receiving groove 531 and abuts against the bottom wall of the second receiving groove 531. By providing the first receiving groove 530 and / or the second receiving groove 531, the spring can be more stably positioned between the dose plate 522 and the slider 521, preventing the spring from shaking and failing to press the dose plate 522 against the bottom wall of the powder container 41.

[0179] In one embodiment, if Figure 15A and Figure 15B 、 Figure 17A and Figure 17BAs shown, the bottom surface of the slide groove 514 of the mounting seat 51 has a first escape groove 517, and the second surface 527 of the slider 521 has a second escape groove 532 corresponding to the first escape groove 517. The first elastic arm buckle 524 is disposed within the second escape groove 532 and suspended in the air by the first escape groove 517. It will be appreciated that suspending the first elastic arm buckle 524 in the first escape groove 517 can further reduce friction between the slider 521 and the mounting seat 51. In other embodiments, the first elastic arm buckle 524 can also be disposed in contact with the bottom wall of the first escape groove 517.

[0180] In one embodiment, if Figures 14A to 15B As shown, the second surface 527 of the slider 521 is further provided with a rib 539. The rib 539 protrudes from the second surface of the slider 521 and is provided corresponding to the slide groove 514. The rib 539 abuts against the bottom surface of the slide groove 514. It can be understood that by providing the rib 539 on the second surface of the slider 521, compared with the second surface of the slider 521 directly contacting the bottom surface of the slide groove 514, the contact area between the slider 521 and the slide groove 514 of the mounting seat 51 can be reduced, further reducing the friction between the slider 521 and the mounting seat 51. Specifically, as shown in FIG. Figure 14A and Figure 15B As shown, there are two ribs 539, which are spaced apart. In other embodiments, the ribs 539 may be one, three, four, or any other number, or no ribs 539 may be provided.

[0181] like Figure 10 、 Figures 13A to 15B 、 Figures 20A to 21B When the dosage assembly 52 is in the fifth position, the dosage assembly 52 and the mounting seat 51 are limited by the first elastic arm buckle 524 and the engaging portion 513. Furthermore, a reset boss 533 is provided on one side of the dosage assembly 52. ​​Specifically, Figure 15A and Figure 15B As shown, the reset boss 533 is provided on one side of the slider 521 close to the first side surface 515 of the slide groove 514, and along the vertical direction, the reset boss 533 is spaced apart at the top of the first elastic arm buckle 524. When the dosage assembly 52 is in the fifth position, the top of the protrusion structure 422 of the connecting rod 42 abuts against the side of the reset boss 533 provided on the slider 521 to limit the dosage assembly 52 to the fifth position. Specifically, the shape of the protrusion structure 422 is trapezoidal, as shown in FIG. Figure 20A and Figure 20BAs shown, when the dosage assembly 52 is in the fifth position, the top surface of the raised structure 422 abuts against the side surface of the reset boss 533, thereby stably restraining the dosage assembly 52 in the fifth position. Specifically, when the dosage assembly 52 is in the fifth position, it is primarily restrained by the raised structure 422 of the connecting rod 42, and the engaging portion 513 on the mounting seat 51 is not required to restrain the dosage assembly 52. ​​The engaging portion 513 on the mounting seat 51 can temporarily restrain the dosage assembly 52 during assembly, or it can restrain the dosage assembly 52 in the event that the connecting rod 42 fails to abut the dosage assembly 52. ​​This prevents the dosage assembly 52 from moving under the drive of the first elastic member 536 and failing to be restrained in the fifth position, thereby preventing the metering cup 523 from being aligned with the powder outlet 413 of the powder container 41.

[0182] During the movement of the connecting rod 42 from the third position to the fourth position, during the air compression stroke, the connecting rod 42 moves downward in the vertical direction. Figures 20A to 21B As shown, the raised structure 422 gradually changes from the top surface abutting against the side surface of the reset boss 533 to the inclined surface of the raised structure 422 abutting against the bottom surface of the reset boss 533. The raised structure 422 gradually releases the restriction on the reset boss 533 of the slider 521. As the connecting rod 42 moves downward and the air compression stroke ends, the raised structure 422 and the reset boss 533 no longer abut. At this time, the engaging portion 513 of the first side surface 515 of the slide groove 514 of the mounting seat 51 cooperates with the first elastic arm buckle 524 on the slider 521 to limit the slider 521 to the fifth position. As the connecting rod 42 continues to move downward in the vertical direction, the raised structure 422 of the connecting rod 42 begins to contact the first elastic arm buckle 524 and squeezes the first elastic arm buckle 524 to move it toward the side away from the first side surface 515 of the slide groove 514, as shown in FIG. Figure 18A and Figure 18BAs shown, as the first elastic arm catch 524 moves, the engaging portion 513 of the first side surface 515 of the chute 514 no longer contacts and engages with the first elastic arm catch 524 on the side surface of the slider 521, causing the engaging portion 513 to no longer restrict the slider 521. Specifically, the downward movement of the connecting rod 42 causes the protruding structure 422 to trigger the first elastic arm catch 524 of the slider 521 of the dosage assembly 52 to release the restraint from the engaging portion 513 of the chute 514 of the mounting base 51. With the first elastic arm catch 524 of the slider 521 released from restraint, the slider 521 can be driven, allowing the dosage assembly 52 to move along the first direction A1 from the fifth position to the sixth position. After the first elastic arm catch 524 is released from restraint, the first elastic member 536 drives the dosage assembly 52 to move rapidly to the sixth position, and the metering cup 523 moves synchronously and rapidly with the slider 521. The rapid movement of the metering cup 523 prevents the powder in the metering cup 523 from leaking out. In other embodiments, a smaller spring may be used to drive the dosage assembly 52 , and the starting thrust required during the resetting process of the dosage assembly 52 may be smaller, thereby achieving thrust optimization.

[0183] Specifically, such as Figure 15A 、 Figure 15B 、 Figure 18A and Figure 18B As shown, one end of the first elastic arm buckle 524 of the slider 521 has a thickened portion 534, and the thickened portion 534 has an inclined surface. After the air compression stroke ends, the protruding structure 422 of the connecting rod 42 begins to contact the thickened portion 534 at the end of the first elastic arm buckle 524. When the air compression stroke ends and the connecting rod 42 continues to move downward, the protruding structure 422 abuts against the inclined surface of the thickened portion 534 and squeezes the thickened portion 534, so that the first elastic arm buckle 524 is away from the engaging portion 513 of the first side surface 515 of the slide groove 514, thereby releasing the limit on the slider 521, so that the dosage assembly 52 can move from the fifth position to the sixth position along the first direction A1 within the delivery stroke, so as to deliver the powder in the metering cup 523 from the powder outlet 413 position to the air flow channel Q1 position, so as to facilitate the subsequent flow through the air flow channel Q1 into the deaggregation mechanism. Figure 19A and Figure 19B As shown, after the dosage assembly 52 moves to its position, i.e., to the sixth position, along the sliding direction of the dosage assembly 52, i.e., along the first direction A1, the first elastic arm buckle 524 is located on one side of the engaging portion 513, and the first elastic arm buckle 524 passes over the engaging portion 513. At this time, the protruding structure 422 of the connecting rod 42 has moved to below the thickened portion 534 of the first elastic arm buckle 524 located on the slider 521.

[0184] In one embodiment, see Figure 13B and Figure 13C 、 Figure 18B 、 Figure 19B 、 Figure 20A and Figure 20B When the dosage assembly 52 is in the initial position, that is, in the fifth position, the reset boss 533 of the dosage assembly 52 is abutted and limited by the protruding structure 422 of the connecting rod 42. During the downward movement of the connecting rod 42, the protruding structure 422 and the reset boss 533 are no longer in contact. At the same time, during the downward movement of the connecting rod 42, in order to facilitate the squeezing of the first elastic arm buckle 524 of the dosage assembly 52 by the protruding structure 422 so that it can move toward the side away from the first side surface 515 of the sliding groove 514, when the dosage assembly 52 is in the fifth position, that is, when the top surface of the protruding structure 422 of the connecting rod 42 abuts against the side surface of the reset boss 533 of the dosage assembly 52, as shown in FIG. Figure 13B and Figure 13C As shown, there is a gap between the first elastic arm buckle 524 of the dosage assembly 52 and the locking portion 513 of the mounting seat 51, so as to prevent the locking portion 513 from interfering with the movement of the first elastic arm buckle 524, so that the first elastic arm buckle 524 can smoothly move toward the side of the first side surface 515 away from the slide groove 514, thereby unlocking the dosage assembly 52.

[0185] In other embodiments, when the dosage assembly 52 is in the initial position, i.e., the fifth position, the protruding structure 422 of the connecting rod 42 and the reset boss 533 of the dosage assembly 52 may not abut against each other, and no gap may be provided between the first elastic arm buckle 524 of the dosage assembly 52 and the engaging portion 513 of the mounting seat 51. The engaging portion 513 directly abuts against the first elastic arm buckle 524, thereby limiting the dosage assembly 52 by the engaging portion 513. Alternatively, when the dosage assembly 52 is in the initial position, i.e., the fifth position, the protruding structure 422 may abut against the reset boss 533, and the engaging portion 513 may abut against the first elastic arm buckle 524 at the same time. The first elastic arm buckle 524 and the engaging portion 513 may also be configured in other shapes or manners, as long as it can be ensured that the engaging portion 513 does not interfere with the movement of the first elastic arm buckle 524 during the downward movement of the connecting rod 42, and the limiting of the first elastic arm buckle 524 by the engaging portion 513 can be successfully released.

[0186] Specifically, the dosing plate 522 has a metering cup 523 on its surface near the powder container 41. The fifth position is the powder filling position, and the sixth position is the powder inhalation position. When the dosing assembly 52 is in the fifth position, the powder outlet 413 of the powder container 41 is aligned with the metering cup 523 of the dosing plate 522. When the dosing assembly 52 is in the sixth position, the metering cup 523 of the dosing plate 522 is offset from the powder outlet 413 of the powder container 41, and the metering cup 523 is located on the airflow channel Q1. The airway groove 416 at the bottom of the powder container 41 cooperates with the delivery mechanism to form the airflow channel Q1. Specifically, the airway groove 416 cooperates with the dosing plate 522 to form the airflow channel Q1. The dosing assembly 52 moves back and forth between the powder outlet 413 and the airflow channel Q1, delivering the powder in the powder container 41 to the airflow channel Q1. When the dosage assembly 52 is in the sixth position, i.e., the powder delivery position, the raised portion 418 on the bottom wall of the airway groove 416 is arranged corresponding to the metering cup 523 of the dosage assembly 52, and along the airflow direction in the airflow channel Q1, the height and width of the airflow channel Q1 remain unchanged.

[0187] During the compression stroke, the dosing assembly 52 is in the fifth position, and the powder in the storage chamber 411 is filled into the metering cup 523 of the dosing plate 522. The metering cup 523 is filled, thereby facilitating quantitative dosing. Specifically, the capacity of the metering cup 523 is in the range of 5 mg to 20 mg. Preferably, the capacity of the metering cup 523 is 10 mg. The shape of the metering cup 523 of the dosing plate 522 corresponds to the shape of the powder outlet 413. For example, the cross-sectional shape of the metering cup 523 corresponds to the shape of the powder outlet 413, and the diameter of the circular metering cup 523 is between 0.5 mm and 5 mm. The length of the elliptical track-shaped metering cup 523 is between 3 mm and 10 mm, and the width is between 2 mm and 5 mm. The longitudinal cross-sectional shape of the metering cup 523 can be arc-shaped or conical. The maximum depth of the arc-shaped metering cup 523 is between 0.5 mm and 3 mm, which can ensure the stability of the powder filling in the metering cup 523 and the consistency of the emptying. When the dosing assembly 52 is in the fifth position, the maximum distance between the powder outlet 413 of the powder container 41 and the bottom of the metering cup 523 is between 1 mm and 2 mm, thereby preventing powder waste during filling. During the delivery process, the dosing assembly 52 moves from the fifth position to the sixth position within a range of 2 mm to 10 mm.

[0188] Specifically, such as 17A to 17D 、 Figures 22A to 24BThe mounting base 51 is provided with a powder inlet 518, one end of which extends to the surface of the mounting base 51 near the powder container 41. One end of the air flow channel Q1 is connected to the powder inlet 518. Specifically, the end of the air flow channel Q1 away from the air inlet port 417 is connected to the powder inlet 518. When the dosing assembly 52 is in the sixth position, the dosing plate 522 is arranged corresponding to the position of the powder inlet 518. The metering cup 523 of the dosing plate 522 is located in the air flow channel Q1, so that when the user inhales, the powder in the metering cup 523 is delivered to the interior of the deaggregation mechanism through the air flow channel Q1 and the powder inlet 518. Specifically, the corner of the powder inlet 518 near the end of the powder container 41 is chamfered, wherein the chamfer can be rounded or beveled. Preferably, the end of the powder inlet 518 near the air flow channel Q1 is rounded. It can be understood that the direction of the airflow will change suddenly when the airflow flows through the airflow channel Q1 and enters the powder inlet 518. By setting a chamfer at the corner position of the port of the powder inlet 518, the port of the powder inlet 518 can be smoothly transitioned through the arc surface at the corner, which can buffer the airflow and reduce the generation of eddy currents, thereby avoiding the problem of powder jamming and residue at the corner position of the port of the powder inlet 518, resulting in powder waste.

[0189] like Figure 15A and Figure 15B 、 Figures 22A to 24B As shown, in one embodiment, the dose assembly 52 further includes an extrusion spring arm 535, one end of which is connected to the first limiting wall 528 of the slider 521, and the other end is used to abut against the dose protection plate 61 of the trigger mechanism. Specifically, the dose protection plate 61 of the trigger mechanism can move back and forth between the seventh position and the eighth position. Figure 22A and Figure 22B As shown, when the dosage assembly 52 is in the fifth position and the dosage protection plate 61 is in the seventh position, the other end of the squeezing spring arm 535 abuts against the dosage protection plate 61 to limit the dosage protection plate 61 to the seventh position, and the squeezing spring arm 535 presses the dosage protection plate 61 tightly against the side of the third accommodating groove 419 at the bottom of the powder container 41 close to the powder outlet 413, thereby preventing powder from entering the gap between the dosage protection plate 61 and the side of the third accommodating groove 419 close to the powder outlet 413 during the powder filling process, resulting in waste such as powder jamming or powder leakage.

[0190] In one embodiment, the mounting base 51 is further provided with a retaining structure (not shown). During the reset process of the dosing assembly 52, the protrusion 422 of the connecting rod 42 presses against the reset protrusion 533, causing the dosing assembly 52 to move from the sixth position to the fifth position. When the dosing assembly 52 moves to the fifth position, the retaining structure limits the dosing assembly 52, ensuring that the dosing assembly 52 is reset into place, so that the metering cup 523 is aligned with the powder outlet 413, thereby ensuring the filling effect during powder filling. Because the squeezing spring arm 535 is an elastic structure, on the basis of ensuring that the dosing assembly 52 is reset into place, the squeezing spring arm 535 squeezes the dose protection plate 61 to reset it into place. That is, during the reset process, it is necessary to effectively ensure that the dosing assembly 52 is reset into place.

[0191] Furthermore, the delivery mechanism further includes a first elastic member 536, which can be a first torsion spring, one end of which abuts against the first limiting wall 528 of the slider 521, for driving the slider 521 to slide from the fifth position to the sixth position. Specifically, a mounting post 410 (such as Figure 11B As shown), the first torsion spring is mounted on the mounting post 410, and has a fixed arm and a driving arm. The fixed arm is fixedly abutted against the powder container 41, and the driving arm is abutted against the first limiting wall 528 of the slider 521. Figures 14A to 15B As shown, in one embodiment, the first retaining wall 528 of the slider 521 has a third escape groove 537. When the slider 521 is in the fifth position, the top of the first retaining wall 528 abuts against one end of the first torsion spring, compressing and bending the first torsion spring, causing the first torsion spring to elastically deform and accumulate elastic potential energy. This facilitates movement of the dosing assembly 52 from the fifth position to the sixth position after the retaining force on the dosing assembly 52 is released. When the slider 521 is in the sixth position, the first torsion spring releases its elastic potential energy, and one end of the first torsion spring is positioned within the third escape groove 537. It will be appreciated that the third escape groove 537 is a recessed groove relative to the first retaining wall 528. The third escape groove 537 can be formed by directly cutting a groove in the surface of the first retaining wall 528. In other embodiments, a protrusion can be provided on the surface of the first retaining wall 528 to form the third escape groove 537 between the protrusion and the first retaining wall 528.

[0192] See also Figures 22A to 24B , specifically, Figure 22A and Figure 22B As shown, when the slider 521 is in the fifth position, the upper portion of the driving arm of the first torsion spring abuts against the first limiting wall 528 of the slider 521, the lever arm is small and the thrust is large, which can quickly drive the dosage assembly 52 to move; Figure 23 and Figure 24BAs shown, when the slider 521 is in the sixth position, the lower portion of the driving arm of the first torsion spring abuts the first limiting wall 528 of the slider 521. Specifically, the lower portion of the driving arm of the first torsion spring abuts the sidewall of the third avoidance groove 537 of the first limiting wall 528, resulting in a larger moment arm and smaller thrust, effectively reducing the torque during the lid closing process. It can be understood that by providing the third avoidance groove 537, the pressure of the first torsion spring can be adjusted to prevent the first torsion spring from freezing and failing, or the end of the driving arm of the first torsion spring from scraping against the first limiting wall 528, generating debris that can be inhaled by the user. At the same time, the moment arm of the first torsion spring can also be adjusted, allowing the slider 521 to move more smoothly from the fifth to the sixth position. Preferably, the third avoidance groove 537 is a through hole, allowing for easy observation of the status of internal trigger mechanism components such as the dose protection plate 61. In other embodiments, the third avoidance groove 537 can also be configured as a blind hole, and can be designed as needed.

[0193] In another embodiment, the third avoidance groove 537 may not be provided on the first limiting wall 528 of the slider 521. Instead, one end of the first torsion spring may be bent to form a smooth transition portion. This smooth transition portion of the first torsion spring abuts against the first limiting wall 528 of the slider 521, thereby driving the dosage assembly 52 from the fifth position to the sixth position. By bending one end of the first torsion spring to form a smooth transition portion, the end of the driving arm of the first torsion spring can be prevented from directly abutting against the first limiting wall 528 of the slider 521, thereby scraping against the first limiting wall 528 and generating debris.

[0194] In other embodiments, the first torsion spring may be a compression spring or a tension spring, or the first torsion spring may be configured as a spring sheet or an elastic arm, as long as it can drive the dosage assembly 52 to move from the fifth position to the sixth position.

[0195] In other embodiments, the delivery mechanism may be configured as another structural form, and the delivery mechanism may not move from the fifth position to the sixth position by sliding or translating. For example, the delivery mechanism may be configured as a rotating structure, which rotates the metering cup 523 from a position corresponding to the powder outlet 413 (i.e., the powder filling position) to a position corresponding to the powder inlet 518 (i.e., the powder inhalation position), so that the metering cup 523 is located within the air flow channel Q1. Specifically, before the dosage assembly 52 rotates from the fifth position to the sixth position, other structural members may be used to restrain the dosage assembly 52 at the fifth position, or other structural members may be used to release the restraint on the dosage assembly 52. ​​For example, the dosage assembly 52 may not include the first elastic arm buckle 524, and the mounting seat 51 may not include the engaging portion 513. Instead, the dosage assembly 52 may be restrained and released by the cooperation of multiple structural members. During the delivery process, the accumulated elastic potential energy of the elastic member may still be used to drive the dosage assembly 52 to rotate. As long as the limitation of the dosage component 52 can be released and the elastic stored energy is used to drive the delivery mechanism to move, the powder delivery function can be achieved, and the specific structure can be designed as needed.

[0196] During the closing process of the outer cover 2, i.e., during the rotation of the outer cover 2 from the second position to the first position, the cam 22 of the outer cover 2 pushes the connecting rod 42 upward, thereby causing the connecting rod 42 to move from the fourth position to the third position for reset. During this process, the protrusion 422 of the connecting rod 42 re-engages with the reset protrusion 533 of the slider 521. Specifically, the inclined surface of the protrusion 422 gradually re-engages with the bottom surface of the reset protrusion 533 of the slider 521. As the connecting rod 42 moves upward, the inclined surface of the protrusion 422 presses against the reset protrusion 533, driving the dosage assembly 52 to move from the sixth position to the fifth position. When the connecting rod 42 is reset to the first position, the top surface of the protrusion 422 re-engages with the side surface of the reset protrusion 533, causing the dosage assembly 52 to return to the fifth position. In other words, during the reset movement of the connecting rod 42 from the fourth position to the third position, the dosage assembly 52 is driven to return from the sixth position to the fifth position.

[0197] In one embodiment, if 17A to 17D The mounting seat 51 also has a pressure relief port 519. One end of the pressure relief port 519 is aligned with and communicates with the end of the pressure relief hole 414 away from the air bag 44, and the other end extends to the second side surface 516 of the chute 514. The second side surface 516 is arranged opposite to the first side surface 515. Before the slider 521 of the delivery mechanism moves, that is, before the delivery stroke begins (during the air compression stroke), the side of the slider 521 blocks the pressure relief port 519 of the mounting seat 51 and extends to the port 5191 in the chute 514 (as shown in FIG. Figure 17C and Figure 17D As shown), the metering cup 523 of the dosage plate 522 is set corresponding to the powder outlet 413 (as shown Figure 22A and Figure 22B As shown), during the compression stroke, the gas in the airbag 44 is compressed and enters the storage chamber 411 for compression, so that the powder in the storage chamber 411 smoothly fills the measuring cup 523; during the delivery stroke, after the slider 521 moves, the measuring cup 523 and the powder outlet 413 are staggered (as shown). Figures 23 to 24B As shown in the figure, the dosage plate 522 blocks the powder outlet 413, and the side of the slider 521 no longer blocks the pressure relief port 519 of the mounting seat 51 and extends to the port 5191 in the slide groove 514. The port 5191 of the pressure relief port 519 on the mounting seat 51 is exposed. When the airbag 44 is compressed, the gas between the airbag 44 and the waterproof breathable membrane 46 is discharged after passing through the pressure relief hole 414 and the pressure relief port 519, thereby achieving pressure relief of the storage chamber 411.

[0198] See also 17A to 17F The delivery mechanism further includes a second elastic arm buckle 538, which is used to limit the dose protection plate 61 of the trigger mechanism to the seventh position. Figures 17C to 17F In one embodiment, the mounting base 51 includes a second elastic arm buckle 538, which is arranged at one end of the mounting base 51 close to the powder container 41. Before the trigger mechanism is triggered, the second elastic arm buckle 538 is in a normal state, and the second elastic arm buckle 538 limits the dose protection plate 61 of the trigger mechanism to the seventh position. After the trigger mechanism is triggered, the second elastic arm buckle 538 can be squeezed by the trigger mechanism to cause the second elastic arm buckle 538 to deform, thereby releasing the limit on the dose protection plate 61, so that the dose protection plate 61 can be driven to move from the seventh position to the eighth position.

[0199] In other embodiments, the second elastic arm buckle 538 may not be provided on the mounting seat 51. For example, the second elastic arm buckle 538 may be provided on the dose protection plate 61. For example, the dose protection plate 61 may be partially made into an elastic structure to serve as the second elastic arm buckle 538, or an elastic arm may be directly added to the dose protection plate 61 to serve as the second elastic arm buckle 538, or the dose protection plate 61 may be partially hollowed out to reduce its rigidity to form the second elastic arm buckle 538. The second elastic arm buckle 538 on the dose protection plate 61 cooperates with the mounting seat 51 to limit the dose protection plate 61 at the seventh position. The trigger mechanism squeezes the second elastic arm buckle 538 on the dose protection plate 61 to release the limit on the dose protection plate 61, so that the dose protection plate 61 can be driven to move from the seventh position to the eighth position.

[0200] (3) Trigger mechanism

[0201] See Figures 25 to 41 , Figure 25is a schematic structural diagram of the trigger mechanism of the powder inhalation device provided by the present application in one state, Figure 28 is a schematic structural diagram of the trigger mechanism of the powder inhalation device provided by the present application in another state, Figure 32A yes Figure 25 A schematic diagram of the structure of the pawl of the trigger mechanism is provided at an angle. Figure 32B yes Figure 32A The schematic diagram of the structure of the pawl at another angle is provided. Figure 33A yes Figure 25 A schematic structural diagram of an embodiment of an air intake baffle of a trigger mechanism provided at an angle, Figure 33B yes Figure 33A The schematic diagram of the structure of the air intake baffle at another angle is provided. Figure 33C yes Figure 25 A schematic structural diagram of another embodiment of the air intake baffle of the trigger mechanism provided at an angle, Figure 34A yes Figure 25 A schematic diagram of the structure of the trigger mechanism bracket at an angle is provided. Figure 34B yes Figure 34A The structural diagram of the provided bracket at another angle, Figure 35A yes Figure 25 A schematic diagram of the assembly structure of an embodiment of the trigger mechanism provided, wherein the air intake baffle and the bracket are at an angle in a state, Figure 35B yes Figure 35A Provided is a schematic diagram of the assembly cross section of the air intake baffle and bracket, Figure 35C yes Figure 25 A schematic cross-sectional view of another embodiment of the assembly of the air intake baffle and the bracket of the trigger mechanism is provided. Figure 36 yes Figure 25 The provided schematic diagram of the assembly structure of the air intake baffle and the bracket of the trigger mechanism at an angle in another state, Figure 37 yes Figure 25 The provided schematic diagram of the assembly structure of the air intake baffle and the bracket of the trigger mechanism at an angle in another state is provided. Figure 38 yes Figure 25 The schematic diagram of the structure of the dose protection plate of the trigger mechanism provided, Figure 39A yes Figure 38 The provided schematic diagram of the assembly structure of the dose protection plate and the delivery mechanism in the same state, Figure 39B yes Figure 38 A schematic diagram of the assembly structure of the dose protection plate and the delivery mechanism in another state is provided. Figure 40A This is a schematic diagram of the assembly structure of the pawl and connecting rod of the powder inhalation device provided by the present application when they are in the same state. Figure 40B This is a schematic diagram of the assembly structure of the pawl and connecting rod of the powder inhalation device provided by the present application in another state. Figure 40CThis is a schematic diagram of the assembly structure of the pawl and connecting rod of the powder inhalation device provided by the present application in another state. Figure 40D This is a schematic diagram of the assembly structure of the pawl and connecting rod of the powder inhalation device provided by the present application in another state. Figure 41 yes Figure 1 A schematic structural diagram of the lower shell of the provided powder inhalation device.

[0202] See also Figures 25 to 41 The trigger mechanism includes a dose protection plate 61, a pawl 62, an air intake baffle 63, a bracket 64, and a second elastic member 65, a third elastic member 66, and a fourth elastic member 67. The dose protection plate 61 is capable of reciprocating between a seventh position and an eighth position. In the seventh position, it blocks the metering cup 523 of the dose assembly 52. ​​In the eighth position, it does not block the metering cup 523, exposing the metering cup 523 to the airflow channel Q1. The second elastic member 65 is used to provide a force to move the dose protection plate 61 from the seventh position to the eighth position. The pawl 62 is rotatably connected to the mounting base 51 and is capable of reciprocating between a ninth position and a tenth position. The fourth elastic member 67 is used to provide a force to rotate the pawl 62 from the ninth position to the tenth position. The air intake baffle 63 is rotatably mounted on a bracket 64. The bracket 64 has a trigger air intake passage 641. The air intake baffle 63 is rotatable between an eleventh position and a twelfth position, and blocks the trigger air intake passage 641 when in the eleventh position. The third elastic member 66 is used to limit the air intake baffle 63 to the eleventh position and, when in the twelfth position, provide the air intake baffle 63 with a force to return the air intake baffle 63 from the twelfth position to the eleventh position. The second elastic member 65, the third elastic member 66, and the fourth elastic member 67 may all be torsion springs.

[0203] For details, see Figures 25 to 33CThe pawl 62 includes a first rotating shaft 621, which is mounted on the mounting base 51. The pawl 62 can rotate back and forth between a ninth position and a tenth position about the first rotating shaft 621. The air intake baffle 63 includes a second rotating shaft 631, which is mounted on the bracket 64. The second rotating shaft 631 and the first rotating shaft 621 are arranged to intersect. Preferably, the second rotating shaft 631 and the first rotating shaft 621 are arranged perpendicular to each other. The second rotating shaft 631 extends in a vertical direction, and the first rotating shaft 621 extends in a second direction A2. The air intake baffle 63 can rotate between an eleventh position and a thirteenth position about the second rotating shaft 631. When the air intake baffle 63 rotates from the eleventh position to the thirteenth position, it passes through the twelfth position. Among them, when the air intake baffle 63 is in the eleventh position, the pawl 62 is limited to the ninth position. When the air intake baffle 63 is in the twelfth position, the limit on the pawl 62 is released, so that the pawl 62 rotates from the ninth position to the tenth position, thereby triggering the dose protection plate 61 to move from the seventh position to the eighth position.

[0204] Specifically, such as Figures 33A to 37 As shown, the air intake baffle 63 further includes a door panel 632 connected to one side of a second rotating shaft 631 and a swing member 633 connected to the other side of the second rotating shaft 631. The second rotating shaft 631 of the air intake baffle 63 is disposed outside the side wall of the trigger air intake passage 641. A portion of the door panel 632 is disposed within the trigger air intake passage 641, and another portion extends to the second rotating shaft 631. The door panel 632 includes a first partition 630. When the air intake baffle 63 rotates between the eleventh position and the twelfth position, the first partition 630 engages with the side wall of the trigger air intake passage 641 to block the trigger air intake passage 641.

[0205] It can be understood that in order to maintain the stability of the trigger mechanism, the elastic force of the third elastic member 66 is usually increased. The increase in the elastic force of the third elastic member 66 requires a greater suction force to trigger the rotation of the door panel 632 when the user inhales. By setting the door panel 632 to the above-mentioned structure, the torque of the door panel 632 rotation can be increased, so that the part where the air pressure is applied is farther away from the second rotating shaft 631, the force efficiency is higher, and it is more stable, so that the user can trigger the door panel 632 to rotate with a smaller suction force to open the trigger air inlet channel 641; moreover, the greater the torque, the greater the elastic force of the third elastic member 66 can be, and the anti-interference ability of the entire structure of the trigger mechanism will be improved. At the same time, by setting the first partition 630, and when the air intake baffle 63 rotates between the eleventh position and the twelfth position, the first partition 630 can cooperate with the side wall of the trigger air intake channel 641 to block the trigger air intake channel 641. In the process of the air intake baffle 63 rotating from the eleventh position to the twelfth position, a more reliable seal is provided for the trigger air intake channel 641, avoiding the trigger air intake channel 641 being partially opened when the air intake baffle 63 is not rotated to the twelfth position (that is, when it is only rotated by a small angle), resulting in the air intake baffle 63 being difficult to be fully triggered when the user inhales, thereby causing the trigger air intake channel 641 to not be fully opened.

[0206] Specifically, such as Figures 33A to 35B As shown, in some embodiments, the bracket 64 has a second partition 640, and the second partition 640 has a second curved surface 649. By setting the first partition 630 and the second partition 640, when the air intake baffle 63 rotates between the eleventh position and the twelfth position, the first partition 630 of the door panel 632 cooperates with the second curved surface 649 of the second partition 640 to block the triggering air intake channel 641 to improve the sealing reliability of the triggering air intake channel 641.

[0207] Specifically, such as Figures 33A to 33B 、 Figures 34A to 35B As shown, in one embodiment, the door panel 632 of the air intake baffle 63 includes a connecting portion 634, a bent portion 635, and a shielding portion 636. The first end of the connecting portion 634 is connected to the second rotating shaft 631, the second end of the connecting portion 634 is connected to the first end of the bent portion 635, and the shielding portion 636 is located on a side of the bent portion 635 away from the connecting portion 634 and is connected to the second end of the bent portion 635. In this embodiment, the bent portion 635 serves as the first partition 630, as shown in FIG. Figure 35B As shown, the second partition 640 is located on the side of the bending portion 635 close to the second rotating shaft 631. When the air intake baffle 63 is in the eleventh position, the shielding portion 636 and the bending portion 635, that is, the first partition 630, are both located in the trigger air intake channel 641 to block the trigger air intake channel 641 of the bracket 64.

[0208] See also Figure 25 、 Figure 28 and Figures 33A to 37 The trigger air inlet channel 641 of the bracket 64 has a top wall and an annular side wall. The top wall of the trigger air inlet channel 641 has an air inlet 642. When the air inlet baffle 63 is in the eleventh position, the blocking portion 636 of the air inlet baffle 63 blocks the trigger air inlet channel 641. Figure 35B As shown, in one embodiment, when the air inlet baffle 63 is in the eleventh position, the blocking portion 636 blocks the air inlet 642. The annular sidewalls of the trigger air inlet passage 641 include a first sidewall 643 and a second sidewall 644, which are arranged opposite each other along the extension direction of the second rotation axis 631, and a third sidewall 645 and a fourth sidewall 646, which are arranged opposite each other in a direction perpendicular to the second rotation axis 631. The third sidewall 645 is located on the side of the fourth sidewall 646 away from the second rotation axis 631. In one embodiment, the fourth sidewall 646 serves as the second partition 640.

[0209] In one embodiment, if Figure 34A and Figure 34B As shown, the edge of the first side wall 643 away from the top wall has a first air inlet groove 647. Specifically, the first air inlet groove 647 is a notch provided on the first side wall 643. In other embodiments, the first air inlet groove 647 may also be provided on the edge of the second side wall 644 away from the top wall, or the first air inlet groove 647 may be provided on both the edge of the second side wall 644 away from the top wall and the edge of the first side wall 643 away from the top wall. It can be understood that by providing the first air inlet groove 647 on the edge of the first side wall 643 and / or the second side wall 644 away from the top wall, during the triggering process, it is not necessary for the air inlet baffle 63 to rotate to form a gap between the end of the door panel 632 and the third side wall 645 before air can be admitted. When the air inlet baffle 63 rotates to form a gap between the side of the door panel 632 and the first air inlet groove 647, air can be admitted in advance (such as Figure 36 and Figure 37 As shown), it can achieve faster air intake and is more conducive to realizing the trigger function.

[0210] Preferably, Figure 34A and Figure 34BAs shown, the first air inlet groove 647 is a V-shaped groove, and the angle between the two side surfaces of the first air inlet groove 647 is the same as the angle between the shielding portion 636 and the bending portion 635, that is, the shape of the first air inlet groove 647 matches the shape formed by the connection of the shielding portion 636 and the bending portion 635 of the air inlet baffle 63, so that during the triggering process, when the air inlet baffle 63 rotates from the eleventh position to the thirteenth position, a gap is formed more quickly between the door panel 632 and the first air inlet groove 647, and the size of the gap is basically consistent, which is convenient for uniform air intake. In other embodiments, the first air inlet groove 647 may also be set to other shapes, for example, any shape such as a rectangle, square, or diamond. The shape of the first air inlet groove 647 may not match the shape formed by the connection of the shielding portion 636 and the bending portion 635 of the air inlet baffle 63. As long as the first air inlet groove 647 can form a gap with the side of the door panel 632 during the rotation of the air inlet baffle 63 from the eleventh position to the twelfth position, air can be introduced in advance.

[0211] In one embodiment, if Figure 34A and Figure 34B As shown, the edge of the third side wall 645 of the bracket 64 away from the top wall has a second air inlet groove 648. Specifically, the second air inlet groove 648 is a notch provided on the edge of the third side wall 645 away from the top wall. During the inhalation triggering process of the trigger mechanism, the second air inlet groove 648 can play a role in stabilizing the pressure during the opening process of the air inlet baffle 63. When the air inlet baffle 63 rotates to the twelfth position, the rocker 633 of the air inlet baffle 63 disengages from the first abutment portion 6241 of the second cantilever 624 of the pawl 62, thereby releasing the limit on the pawl 62. At this time, the second air inlet groove 648 is opened, but the door panel 632 is still located between the first side wall 643 and the second side wall 644. There is still no gap between the end of the door panel 632 and the third side wall 645. The airflow only enters the air inlet 642 (as shown in FIG. 1 ) through the second air inlet groove 648. Figure 36 By providing the second air inlet groove 648, the stability of the trigger flow rate can be further improved. The essence of the second air inlet groove 648 is to release pressure in advance, which is equivalent to setting a threshold for the intake flow rate. Only when the intake flow rate is sufficient can the air inlet damper 63 be pushed to fully open and trigger the intake channel 641. This prevents the air inlet damper 63 from opening due to low pressure or inertia when the trigger flow rate is low or the intake flow rate suddenly decreases.

[0212] In one embodiment, the annular side wall of the bracket 64 is provided with a first air inlet groove 647 and a second air inlet groove 648. When the air inlet baffle 63 rotates from the eleventh position to the thirteenth position, the second air inlet groove 648 on the third side wall 645 is partially opened, and then the first air inlet groove 647 on the first side wall 643 and / or the second side wall 644 is partially opened (e.g., Figure 37As shown in FIG, the second air inlet slot 648 is opened before the first air inlet slot 647. In other embodiments, the bracket 64 may be provided with only the first air inlet slot 647 or only the second air inlet slot 648.

[0213] In one embodiment, see Figure 33A 、 Figure 33B 、 Figures 34A to 35B The first partition 630, or the bent portion 635, has a first curved surface 637. When the air intake baffle 63 is in the eleventh position, the first curved surface 637 is disposed opposite the second curved surface 649. When the air intake baffle 63 rotates between the eleventh and twelfth positions, the first partition 630, or the bent portion 635, is located within the trigger air intake passage 641. The first curved surface 637 cooperates with the second curved surface 649 of the second partition 640, or the fourth sidewall 646, to block the trigger air intake passage 641.

[0214] For details, see Figure 33A 、 Figure 33B 、 Figures 34A to 35B The bent portion 635 and the fourth side wall 646 are both arc-shaped. The surface of the bent portion 635 of the air intake baffle 63 near the connecting portion 634 is a first arc surface 637. The first arc surface 637 can increase the aerodynamic torque of the air intake baffle 63 during rotation. The increased aerodynamic torque can increase the elastic force of the third elastic member 66 acting on the air intake baffle 63, which is beneficial for improving the anti-interference ability of the trigger mechanism and the stability of the structure. At the same time, while maintaining the original aerodynamic torque, the size of the baffle 78 can be reduced, which is beneficial for saving space. The inner surface of the fourth side wall 646 of the bracket 64 is a second arc surface 649. Both the first arc surface 637 and the second arc surface 649 are arc surfaces with their centers located on the axis of the second rotating shaft 631. Specifically, the arc angles of the first arc surface 637 and the second arc surface 649 are 30 degrees to 60 degrees. In other embodiments, the radii of the arcs corresponding to the first arc surface 637 and the second arc surface 649 can also be set to other values, and the bending portion 635 and the fourth side wall 646 can also be set to any other shapes, as long as the bending portion 635 has the first arc surface 637 and the inner surface of the fourth side wall 646 is the second arc surface 649, so that the first arc surface 637 and the second arc surface 649 can cooperate to seal and trigger the air intake channel 641.

[0215] In another embodiment, Figure 33C and Figure 35CAs shown, the door panel 632 includes a connecting portion 634, a shielding portion 636 and a first partition 630, that is, the door panel 632 does not include a bending portion 635, the first end of the connecting portion 634 is connected to the second rotating shaft 631, and the second end is directly connected to the shielding portion 636. The first partition 630 is located on the side of the shielding portion 636 close to the second rotating shaft 631. Specifically, the first end of the first partition 630 can be connected to the connecting portion 634, more specifically, it can be connected to the surface of the connecting portion 634 facing the air inlet 642; or, the first end of the first partition 630 can also be connected to the shielding portion 636, specifically, it can be connected to the surface of the shielding portion 636 facing the air inlet 642; or, the first end of the first partition 630 can also be connected to the connecting position between the shielding portion 636 and the connecting portion 634; the second end of the first partition 630 is a free end. As shown Figure 35C As shown, in a specific embodiment, the first end of the first partition 630 is connected to the connecting position of the shielding portion 636 and the connecting portion 634, and the first partition 630 is located on the side of the second partition 640 away from the second rotating shaft 631, and the second end of the first partition 630 extends toward the top wall of the triggering air intake channel 641. When the air intake baffle 63 is in the eleventh position, the shielding portion 636 and the first partition 630 are both located in the triggering air intake channel 641.

[0216] Specifically, such as Figure 33C and Figure 35C As shown, in one embodiment, the fourth sidewall 646 serves as the second partition 640. The fourth sidewall 646 and the first partition 630 are both arc-shaped. The surface of the first partition 630 facing the fourth sidewall 646 is a first arc surface 637, and the inner surface of the fourth sidewall 646 is a second arc surface 649. Preferably, the first arc surface 637 and the second arc surface 649 are both arc surfaces. More preferably, the first arc surface 637 and the second arc surface 649 are both arc surfaces with their centers located on the axis of the second rotating shaft 631. When the air intake baffle 63 is in the eleventh position, the door panel 632 blocks the trigger air intake channel 641, and the first arc surface 637 and the second arc surface 649 abut against each other to seal the trigger air intake channel 641.

[0217] In other embodiments, the first partition 630 can also be arranged on the side of the second partition 640, that is, the fourth side wall 646, close to the second rotating shaft 631. When the air intake baffle 63 is in the eleventh position, the shielding portion 636 is located in the triggering air intake channel 641, and the first partition 630 is located outside the triggering air intake channel 641. At this time, the surface of the first partition 630 facing the fourth side wall 646 is the first arc surface 637, and the outer surface of the fourth side wall 646 is the second arc surface 649; alternatively, the first partition 630 and the second partition 640 can also be set to other shapes, and the second end of the first partition 630 can extend in other directions. Specifically, the first partition 630 and the second The partition 640 may not be arc-shaped, and it is only necessary to ensure that the first partition 630 has a first arc surface 637, the second partition 640 has a second arc surface 649, and that the first arc surface 637 cooperates with the second arc surface 649 during the rotation of the air intake baffle 63 from the eleventh position to the twelfth position; alternatively, the second partition 640 may be set to a structure independent of the fourth side wall 646; alternatively, the first partition 630 and the second partition 640 may be set to other numbers accordingly, for example, two, three or four first partitions 630 and second partitions 640 may be set accordingly, as long as each first partition 630 and the corresponding second partition 640 can cooperate well.

[0218] In other embodiments, the first partition 630 and the second partition 640 may also be configured in any other shape. The first partition 630 may not have the first curved surface 637, or the second partition 640 may not have the second curved surface 649. For example, the first partition 630 may be configured as a sealing structure. When the air intake baffle 63 is in the eleventh position, the first partition 630 may be located inside or outside the trigger air intake passage 641. The first end of the first partition 630 is connected to the shielding portion 636 or the connecting portion 634, and the second end is configured as a free end and can be bent, curved, or extended in a straight line in any direction. The second end of the first partition 630 may be provided with a contact. When the air intake baffle 63 is in the eleventh position, the contact point of the second end of the first partition 630 abuts against a surface of the second partition 640. When the air intake baffle 63 rotates between the eleventh and twelfth positions, the contact point of the second end of the first partition 630 continues to abut against the surface of the second partition 640, thereby sealing and triggering the air intake passage 641. In other words, the first and second partitions 630 and 640 do not necessarily seal the trigger air intake passage 641 by means of the first curved surface 637 and the second curved surface 649, but may achieve sealing through point contact or any other method.

[0219] The specific structure of the first partition 630 and the specific structure of the fourth side wall 646 or the second partition 640 can be designed as needed, and this application does not limit this. As long as the air intake baffle 63 rotates between the eleventh position and the twelfth position, the first partition 630 can cooperate with the side wall of the triggering air intake channel 641 to block the triggering air intake channel 641.

[0220] like Figure 35A 、 Figure 35B and Figure 35C As shown, when the air intake baffle 63 is in the eleventh position, the door panel 632 blocks the trigger air intake channel 641, and the first curved surface 637 abuts the second curved surface 649. It can be understood that the abutment between the first curved surface 637 and the second curved surface 649 can ensure a more reliable sealing of the trigger air intake channel 641, avoiding the problem that, due to the lack of the first curved surface 637 and the second curved surface 649, when the air intake baffle 63 rotates from the eleventh position to the twelfth position, the air intake channel 641 is only rotated by a small angle, that is, the air intake baffle 63 is not rotated to the twelfth position, the trigger air intake channel 641 is opened, and air flows out from the gap between the blocking portion 636 and the fourth side wall 646. As a result, when the user inhales, even if the inhaled air flow rate reaches a preset threshold, the air intake baffle 63 is still difficult to be fully triggered to rotate to the thirteenth position, thereby causing the trigger air intake channel 641 to fail to fully open and the trigger mechanism to fail to achieve the inhalation trigger function.

[0221] Further, in one embodiment, if Figure 33A 、 Figure 33B 、 Figures 34A to 35B As shown, the door panel 632 of the air intake baffle 63 further includes a reinforcement portion 650. A first side of the reinforcement portion 650 is connected to the shielding portion 636, and a second side is connected to the bent portion 635. This arrangement reinforces the shielding portion 636 and the bent portion 635, improving the structural strength and stability of the air intake baffle 63. Specifically, the third side of the reinforcement portion 650 extends from the second end of the connecting portion 634 to the surface of the shielding portion 636 along the extension direction of the connecting portion 634. This arrangement allows forces acting on the shielding portion 636 to be directly transmitted to the connecting portion 634.

[0222] Further, such as Figures 33A to 33B The pendulum 633 of the air intake baffle 63 further includes a counterweight 638. By providing the counterweight 638, the door panel 632 can be prevented from opening under gravity when the powder inhalation device 100 is placed flat. When the powder inhalation device 100 is placed flat, the suction nozzle 13 faces upward.

[0223] Specifically, such as FIG. 32A to FIG. 32BThe pawl 62 further includes a plate 622 and a first cantilever 623. The first rotation axis 621 of the pawl 62 is substantially perpendicular to the plate 622. It should be noted that "substantially perpendicular" means that the angle between the first rotation axis 621 and the plate 622 is between 80° and 100°. Preferably, the first rotation axis 621 is perpendicular to the plate 622, and the plate 622 is substantially parallel to the vertical direction. One end of the first cantilever 623 is connected to the plate 622, and the other end has a hook 6231. The hook 6231 is used to drive the units counting wheel 82 of the counting mechanism to achieve the counting function.

[0224] For further information, see Figures 25 to 32B The pawl 62 further includes a second cantilever 624, one end of the second cantilever 624 is connected to the plate 622, and the other end has a first abutting portion 6241. Before the trigger mechanism is triggered, when the air intake baffle 63 is at the eleventh position, as shown in FIG. Figure 26A and Figure 26B As shown, the rocker 633 abuts against the first abutment 6241 of the second cantilever 624 of the pawl 62 to limit the pawl 62 to the ninth position. When the trigger mechanism is triggered and the air intake baffle 63 rotates to the twelfth position, the rocker 633 of the air intake baffle 63 disengages from the first abutment 6241 of the second cantilever 624 of the pawl 62, and the air intake baffle 63 releases the limitation on the pawl 62, so that the pawl 62 can rotate from the ninth position to the tenth position under the drive of the fourth elastic member 67.

[0225] Specifically, the end surface where the first abutting portion 6241 of the pawl 62 abuts against the rocker 633 of the air intake baffle 63 is abutting arc surface 6242, and the end surface where the rocker 633 abuts against the first abutting portion 6241 is a locking arc surface 639. Figure 26A and Figure 26B As shown, before the trigger mechanism is triggered, when the air intake baffle 63 is in the eleventh position, the contact arc surface 6242 abuts against the locking arc surface 639, so that the rotational potential energy of the pawl 62 from the ninth position to the tenth position drives the door plate 632 to press against the bracket 64 to block the trigger air intake channel 641 of the bracket 64, and external air cannot enter the trigger air intake channel 641 through the air intake port 642 on the top wall of the bracket 64. At this position, as shown in FIG. Figure 35A and Figure 35BAs shown, the air intake baffle 63 blocks the trigger air intake passage 641 of the bracket 64. The air intake baffle 63 tends to rotate from the twelfth position toward the eleventh position to better block the trigger air intake passage 641 of the bracket 64. This facilitates the rotation of the air intake baffle 63 to achieve the inhalation triggering function when the inhalation airflow velocity exceeds a preset threshold, that is, when the negative pressure in the trigger air intake passage 641 of the bracket 64 exceeds a preset value. Preferably, both the abutting arc surface 6242 and the locking arc surface 639 are eccentric arc surfaces, which can improve the abutment effect between the abutting arc surface 6242 and the locking arc surface 639, and more effectively drive the door panel 632 to press against the bracket 64 to block the trigger air intake passage 641 of the bracket 64.

[0226] In other embodiments, the abutting arc surface 6242 and the locking arc surface 639 can also be set to curved surfaces of any other shape, that is, they do not necessarily have to be arc surfaces, as long as when the air intake baffle 63 is located at the eleventh position, the abutting arc surface 6242 and the locking arc surface 639 can achieve abutment and cooperation to drive the door panel 632 to squeeze close to the bracket 64 to block the triggering air intake channel 641 of the bracket 64.

[0227] like Figures 33A to 33B As shown, the side surface of the pendulum 633 of the air intake baffle 63 has a first inclined surface 6331, as shown in FIG. Figure 27A and Figure 27B As shown, during the rotation of the pawl 62 from the ninth position to the tenth position, the first abutting portion 6241 abuts against the first inclined surface 6331 of the rocker 633 of the air intake baffle 63, thereby driving the air intake baffle 63 to rotate from the twelfth position to the thirteenth position, ensuring that the air intake baffle 63 can be quickly opened. The twelfth position is the middle position of the movement of the air intake baffle 63, as shown in FIG. Figure 36 As shown, when the air intake baffle 63 is in the twelfth position, the trigger air intake channel 641 of the bracket 64 is partially opened, but not opened to the maximum angle.

[0228] like Figure 28 As shown, when the triggering process is completed and the pawl 62 is at the tenth position, the first abutting portion 6241 of the second cantilever 624 of the pawl 62 limits the air intake baffle 63 to the thirteenth position. That is, when the pawl 62 rotates to the tenth position, the air intake baffle 63 rotates to the thirteenth position, and the first abutting portion 6241 limits the air intake baffle 63. Figure 37 As shown, when the air intake baffle 63 rotates to the thirteenth position, the air intake baffle 63 is completely opened or opened to the maximum angle; Figure 28 As shown, at this time, the first abutting portion 6241 limits the air intake baffle 63, and the user's breathing force is no longer needed to maintain the air intake baffle 63 in an open state.

[0229] like Figures 32A to 33BThe pawl 62 further includes a third cantilever 627, one end of the third cantilever 627 is connected to the plate body 622, and the other end has a second abutment portion 628. The side surface of the swing member 633 of the air intake baffle 63 has a second inclined surface 6332, and the second inclined surface 6332 is opposite to the first inclined surface 6331. Figure 29A and Figure 29B As shown, during the process of closing the cover, when the pawl 62 is reversed and reset from the tenth position to the ninth position, the first abutment portion 6241 of the second cantilever 624 releases the limit on the air intake baffle 63, and the second abutment portion 628 applies a trigger force for reversal and reset to the air intake baffle 63 through the second inclined surface 6332 of the abutment rocker 633, so that the air intake baffle 63 is reversed and reset under the joint action of the third elastic member 66 and the second abutment portion 628, so as to prevent the problem of the air intake baffle 63 being stuck and failing to reset.

[0230] like Figures 30A to 32B As shown, the pawl 62 also includes a pressure block 629. The pressure block 629 and the first rotating shaft 621 are both arranged on the same surface of the plate body 622. When the pawl 62 rotates from the ninth position to the tenth position, the pressure block 629 is used to squeeze the second elastic arm buckle 538, so that the dose protection plate 61 is released from the limit.

[0231] like FIG. 32A to FIG. 32B As shown, the pawl 62 further includes a first limiting block 620, which is disposed on the plate body 622 and is disposed on the same surface of the plate body 622 as the first rotating shaft 621. The fourth elastic member 67 is sleeved on the first rotating shaft 621. The fourth elastic member 67 includes a driving arm and a fixed arm. The first limiting block 620 is used to abut against the fourth elastic member 67. Specifically, the first limiting block 620 is used to abut against the driving arm of the fourth elastic member 67. Specifically, there can be one or more first limiting blocks 620. When there are multiple first limiting blocks 620, the multiple first limiting blocks 620 can be distributed at intervals along the arc, so that the driving arm of the fourth elastic member 67 can abut against different first limiting blocks 620, so that the fourth elastic member 67 can be bent to different degrees.

[0232] In one embodiment, the first limit block 620 can be a pressure block 629, that is, the pressure block 629 is used as the first limit block 620. The pressure block 629 can be used to squeeze the second elastic arm buckle 538, and can also be used to abut the fourth elastic member 67, directly abutting the driving arm of the fourth elastic member 67 against the pressure block 629, which is conducive to simplifying the structure, reducing costs, and saving space.

[0233] See also Figures 30A to 32BThe pawl 62 further includes a second limit block 625 provided on the plate 622. The second limit block 625 is spaced apart from the pressing block 629. Specifically, when the pawl 62 rotates from the ninth position to the tenth position, the second limit block 625 is located on one side of the pressing block 629. Figure 30A and Figure 30B As shown, when the pawl 62 is in the ninth position, the second stopper 625 abuts the second elastic arm buckle 538, and the pressure block 629 does not squeeze the second elastic arm buckle 538 to cause deformation. Specifically, when the pawl 62 is in the ninth position, the second elastic arm buckle 538 is located between the pressure block 629 and the second stopper 625 and abuts against the second stopper 625. The second stopper 625 holds the second elastic arm buckle 538 in its initial position, locking the dose protection plate 61 by the second elastic arm buckle 538 and preventing it from moving. The dose protection plate 61 covers the metering cup 523 of the dose plate 522, protecting the powder within the metering cup 523. This ensures that even when the user inhales insufficient airflow or does not inhale, the powder within the metering cup 523 remains sealed, preventing problems such as powder waste or moisture-induced failure.

[0234] The dose protection plate 61 can rotate back and forth between the seventh position and the eighth position. Figures 38 to 39B As shown, the dose protection plate 61 includes a first extension portion 611 and a second extension portion 612 that are interconnected. The projection of the first extension portion 611 is located on the slider 521, used to shield the metering cup 523. The projection of the second extension portion 612 is located outside the slider 521. The second extension portion 612 is also used to connect to the second elastic member 65, so that the second elastic member 65 can drive the dose protection plate 61 from the seventh position to the eighth position. The extension direction of the squeezing spring arm 535 of the slider 521 is parallel to the extension direction of the first extension portion 611. One end of the squeezing spring arm 535 is connected to the side wall of the first limiting wall 528, and the other end abuts the second extension portion 612. When the dose protection plate 61 is in the seventh position, the squeezing spring arm 535 squeezes the dose protection plate 61, allowing the side surface of the first extension portion 611 to mate with the side surface of the third receiving groove 419 near the powder outlet 413, thereby preventing powder leakage.

[0235] When the dose protection plate 61 is in the seventh position, it corresponds to the position setting of the powder inlet 518 of the mounting seat 51. After the delivery stroke of the delivery mechanism is completed and before the trigger mechanism is triggered, the dose assembly 52 is in the sixth position. When the dose protection plate 61 is in the seventh position, the dose protection plate 61 covers the metering cup 523 of the dose assembly 52, so that the metering cup 523 of the dose plate 522 is blocked by the dose protection plate 61 and cannot be exposed to the airflow channel Q1. Even when the user inhales, the powder in the metering cup 523 will not flow out of the metering cup 523, effectively avoiding the waste of powder in the metering cup 523 before the trigger mechanism is triggered. After the trigger mechanism is triggered, the dose protection plate 61 is driven to move from the seventh position to the eighth position. When the dose protection plate 61 is in the eighth position, the dose protection plate 61 is staggered with the powder inlet 518 and the air flow channel Q1 on the mounting seat. The dose protection plate 61 does not cover the dose plate 522. The metering cup 523 of the dose plate 522 of the dose assembly 52 is exposed on the air flow channel Q1, so that when the user inhales, the powder in the metering cup 523 flows through the air flow channel Q1 and the powder inlet 518 together with the air flow and enters the deagglomeration mechanism.

[0236] The second elastic member 65 provides the dose protection plate 61 with a force to move from the seventh position to the eighth position. Specifically, when the dose protection plate 61 is restrained in the seventh position, the second elastic member 65 is squeezed, deformed, and accumulates potential energy. Specifically, the second elastic member 65 may be a second torsion spring, one end of which is fixed to the mounting base 51 and the other end is fixed to the dose protection plate 61, thereby driving the dose protection plate 61 from the seventh position to the eighth position. Specifically, the second elastic member 65 drives the dose protection plate 61 to move along the first direction A1 from the seventh position to the eighth position. In other embodiments, the dose protection plate 61 may also move from the seventh position to the eighth position along other directions, for example, using linear motion or rotational motion, or providing other guide structures so that the dose protection plate 61 can move along the guide structures in a curved manner, thereby achieving reciprocating motion between the seventh and eighth positions.

[0237] Before the trigger mechanism is triggered, the second elastic arm buckle 538 on the mounting seat 51 limits the dose protection plate 61 to the seventh position, and the metering cup 523 of the dose plate 522 is covered. When the flow rate of the user's inhaled air flow is greater than the preset threshold value and the negative pressure of the trigger inlet channel 641 is greater than the preset value, the air intake baffle 63 rotates from the eleventh position to the twelfth position, opens the trigger inlet channel 641, and releases the limit on the pawl 62. The fourth elastic member 67 provided on the pawl 62 drives the pawl 62 to rotate from the ninth position to the tenth position. During the rotation of the pawl 62 from the ninth position to the tenth position, there is a downward As the pawl 62 rotates, the pressing block 629 on the plate 622 of the pawl 62 begins to contact the second elastic arm buckle 538 and continuously compresses the second elastic arm buckle 538, causing it to deform. Specifically, the second elastic arm buckle 538 elastically deforms downward. After the deformation, the second elastic arm buckle 538 releases the restriction on the dose protection plate 61, allowing the dose protection plate 61 to move from the seventh position to the eighth position under the drive of the second elastic member 65. The dose protection plate 61 no longer blocks the metering cup 523 of the dose plate 522, and the powder in the metering cup 523 is exposed to the air flow channel Q1. Preferably, when the dose protection plate 61 moves to the eighth position, the side of the dose protection plate 61 abuts against the first limiting wall 528 of the slider 521, so that during the reset process of the dose assembly 52, the movement of the slider 521 pushes the dose protection plate 61 from the eighth position to the seventh position.

[0238] Specifically, during the process of closing the cover, when the connecting rod 42 is reset from the fourth position to the third position, the protruding structure 422 of the connecting rod 42 and the reset boss 533 act to drive the dose assembly 52 to reset from the sixth position to the fifth position. During this process, the first limiting wall 528 of the slider 521 of the dose assembly 52 maintains an abutment state with the dose protection plate 61. Specifically, the squeezing spring arm 535 provided on the first limiting wall 528 of the slider 521 abuts against the dose protection plate 61, and the squeezing spring arm 535 of the slider 521 of the dose assembly 52 pushes the dose protection plate 61 to reset from the eighth position to the seventh position, thereby realizing the reset of the dose protection plate 61.

[0239] Further, in one embodiment, if FIG. 32A to FIG. 32B As shown, the pawl 62 also includes a third limit block 6221, which is arranged on the plate body 622. The third limit block 6221 is used to temporarily limit the fourth elastic member 67 when assembling the fourth elastic member 67, which is more convenient for installation, ensures that the fourth elastic member 67 is installed in place, and improves assembly stability and assembly efficiency.

[0240] See also Figure 10 、 Figures 32A to 40CThe connecting rod 42 further includes a counting block 424, which is disposed on a side wall of the connecting rod 42. The counting block 424 can be fixedly connected to the connecting rod 42 by gluing, snapping, or other means, or can be integrally formed with the connecting rod 42. The pawl 62 includes a fourth cantilever 6222, which is spaced apart from the first cantilever 623, the second cantilever 624, and the third cantilever 627. One end of the fourth cantilever 6222 is connected to the plate 622, and the other end is free.

[0241] like Figure 40A As shown, before the start of the compression stroke, when the connecting rod 42 is in the third position, i.e., the initial position, the counting block 424 of the connecting rod 42 abuts the free end of the fourth cantilever 6222 of the pawl 62, and the counting block 424 limits the pawl 62 to the ninth position. At this time, the force of the pawl 62 is all on the connecting rod 42, and the pawl 62 is spaced apart from the intake baffle 63. Specifically, the abutting arc surface 6242 of the pawl 62 is spaced apart from the locking arc surface 639 of the rocker 633 of the intake baffle 63. During the compression stroke of the compression mechanism, i.e., when the connecting rod 42 moves from the third position to the fourth position, the connecting rod 42 moves vertically downward, causing the counting block 424 to also move downward, as shown in FIG. Figure 40B As shown, the position restraint on the pawl 62 by the counting block 424 is released. The pawl 62 only abuts the arcuate surface 6242 of the pawl 62 against the locking arcuate surface 639 of the rocker element 633 of the air intake baffle 63 after a relatively small rotation. It will be appreciated that when the connecting rod 42 is in the third position, the arcuate surface 6242 of the pawl 62 is spaced apart from the locking arcuate surface 639 of the rocker element 633 of the air intake baffle 63. This prevents the arcuate surface 6242 from initially abutting the locking arcuate surface 639. After the position restraint on the pawl 62 by the counting block 424 is released and the pawl 62 a relatively small rotation occurs, the arcuate surface 6242 further abuts the locking arcuate surface 639, increasing the abutting force and causing the air intake baffle 63 to become stuck, preventing it from rotating when the user's inhalation airflow exceeds a preset threshold, thereby preventing the inhalation trigger function from failing.

[0242] For details, see Figures 3 to 6 、 Figure 10 、 Figures 32A to 40C The counting block 424 of the connecting rod 42 is a step structure, including a first step surface 425 and a second step surface 426. The second step surface 426 is located on the side of the first step surface 425 close to the first rotating shaft 621. The free end of the fourth cantilever 6222 of the pawl 62 is a step structure, including a third step surface 601 and a fourth step surface 602. The fourth step surface 602 is located on the side of the third step surface 601 close to the first rotating shaft 621. Figure 40AAs shown, before the compression stroke, when the connecting rod 42 is in the third position, the first step surface 425 of the counting block 424 is spaced from the third step surface 601 of the fourth cantilever 6222, and the second step surface 426 of the counting block 424 is in contact with the fourth step surface 602 of the fourth cantilever 6222. Figure 40B As shown, during the compression stroke, when the connecting rod 42 moves from the third position to the fourth position, the second step surface 426 of the counting block 424 separates from the fourth step surface 602 of the fourth cantilever 6222, releasing the limit on the pawl 62, as shown in FIG. Figure 40C As shown, after the trigger stroke, that is, after the pawl 62 rotates from the ninth position to the tenth position, the first step surface 425 of the counting block 424 contacts the third step surface 601 of the fourth cantilever 6222, and the second step surface 426 of the counting block 424 is spaced apart from the fourth step surface 602 of the fourth cantilever 6222. Figure 40D As shown, during the resetting process of the air compression mechanism, that is, during the resetting movement of the connecting rod 42 from the fourth position to the third position, the first step surface 425 of the counting block 424 is separated from the third step surface 601 of the fourth cantilever 6222, and the second step surface 426 of the counting block 424 is in contact with the fourth step surface 602 of the fourth cantilever 6222, so that the movement of the counting block 424 of the connecting rod 42 drives the pawl 62 to reverse from the tenth position to the ninth position, thereby realizing the resetting of the pawl 62.

[0243] See also Figure 2 and Figure 41 The housing 1 of the powder inhalation device 100 includes an upper housing 11 and a lower housing 12. The upper housing 11 and the lower housing 12 are assembled and connected to form a storage space, and various functional mechanisms are arranged in the storage space. The lower housing 12 has a suction nozzle 13. An external air inlet 14 is provided on the side wall of the lower housing 12 at a position corresponding to the air inlet 642 on the top wall of the trigger air inlet channel 641. Figure 41As shown, the external air inlet 14 is located above the suction nozzle 13. When the outer cover 2 is in the first position, the outer cover 2 blocks the suction nozzle 13 and the external air inlet 14. When the outer cover 2 is rotated to the second position, the suction nozzle 13 and the external air inlet 14 are exposed, and the external air inlet 14 connects the outside atmosphere with the space inside the housing 1, and the outside atmosphere enters the housing 1 through the external air inlet 14. Furthermore, a grille 15 is provided on the side wall of the lower housing 12. The grille 15 protrudes from the outer wall of the lower housing 12. The grille 15 is located above the suction nozzle 13 and is adjacent to the external air inlet 14. The grille 15 protrudes from the outer wall of the lower housing 12 to prevent the user's lips from contacting the external air inlet 14 when inhaling powder through the suction nozzle 13, thereby blocking the external air inlet 14 and causing poor air intake or preventing the outside atmosphere from entering the housing 1 from the outside. The external air inlet 14 and the grille 15 can be provided as one or more. In other embodiments, the external air inlet 14 and the grille 15 may be disposed at other locations.

[0244] After the delivery stroke is completed, when the outer cover 2 rotates to the second position, the outer cover 2 no longer covers the suction nozzle 13 of the powder inhalation device 100, and the suction nozzle 13 is exposed. The user can inhale at the position of the suction nozzle 13. When the flow rate of the inhaled air flow is greater than the preset threshold, that is, when the negative pressure of the trigger air inlet channel 641 of the bracket 64 is greater than the preset value, the trigger mechanism is triggered and the trigger stroke is performed. The air inlet baffle 63 rotates from the eleventh position to the twelfth position, so that the trigger air inlet channel 641 is opened. During this process, the swing member 633 of the air inlet baffle 63 and the pawl 6 The first abutment portion 6241 of the second cantilever 624 is disengaged, releasing the restriction on the pawl 62. The pawl 62 rotates from the ninth position to the tenth position under the drive of the fourth elastic member 67. During the rotation of the pawl 62, the pressing block 629 of the pawl 62 presses the second elastic arm buckle 538 on the mounting seat 51, causing deformation, releasing the restriction on the dose protection plate 61 by the second elastic arm buckle 538. As a result, the dose protection plate 61 moves from the seventh position to the eighth position under the drive of the second elastic member 65, thereby exposing the powder in the metering cup 523. After the trigger air inlet channel 641 is opened, the external atmosphere flows through the air inlet 642 of the trigger air inlet channel 641, enters the air flow channel Q1 from the air inlet port 417 of the air channel groove 416 at the bottom of the powder container 41, and carries the powder in the measuring cup 523 exposed in the air flow channel Q1 to flow to the powder inlet 518, and finally enters the deaggregation mechanism. After being deaggregated by the deaggregation mechanism, it flows to the position of the suction nozzle 13 and is inhaled by the user.

[0245] (4) Disaggregation Agency

[0246] See Figures 42A to 47 , Figure 42A This is a structural diagram of an embodiment of a deagglomeration mechanism of a powder inhalation device provided by the present application. Figure 42B yes Figure 42A A cross-sectional schematic diagram of the depolymerization mechanism is provided, Figure 43 yes Figure 42A The structural diagram of the cyclone component of the deagglomeration mechanism provided, Figure 44A yes Figure 42A A schematic structural diagram of the flow guide of the deagglomeration mechanism is provided. Figure 44B yes Figure 44A A schematic cross-sectional view of the guide member is provided. Figure 45 is a structural schematic diagram of another embodiment of the deagglomeration mechanism of the powder inhalation device provided by the present application, Figure 46 yes Figure 45 The structural diagram of the cyclone component of the deagglomeration mechanism provided, Figure 47 yes Figure 45 A schematic structural diagram of a flow guide of a deagglomeration mechanism is provided.

[0247] See also Figures 42A to 47 The deagglomeration mechanism includes a swirl member 71 and a flow guide member 72 connected to each other. Specifically, the swirl member 71 and the flow guide member 72 can be connected by snap connection, ultrasonic welding or gluing. Figure 43 and Figure 46 As shown, the swirl member 71 is integrally formed with the mounting base 51. In other embodiments, the swirl member 71 and the mounting base 51 may also be fixedly connected. The swirl member 71 and the flow guide member 72 cooperate to form a swirl chamber 73. The top wall of the swirl chamber 73 has a powder inlet 518, the bottom wall of the swirl chamber 73 has a powder outlet 74, and the flow guide member 72 has a powder outlet channel 721 connected to the powder outlet 74. One end of the powder outlet channel 721 is connected to the swirl chamber 73 through the powder outlet 74, and the other end is connected to the suction nozzle 13. One end of the air flow channel Q1 away from the air inlet port 417 of the air channel groove 416 is connected to the swirl chamber 73 through the powder inlet 518. During the triggering stroke, the gas and powder flowing through the air flow channel Q1 enter the swirl chamber 73 through the powder inlet 518. After the powder is deagglomerated in the swirl chamber 73, it flows to the powder outlet channel 721 through the powder outlet 74 of the guide member 72, and finally flows to the suction nozzle 13 to be inhaled by the user.

[0248] See also Figures 42A to 44B In one embodiment, the surface of the swirl member 71 near the guide member 72 has a swirl groove 711. The guide member 72 covers the swirl groove 711 to form a swirl chamber 73. The bottom wall of the swirl groove 711 serves as the top wall of the swirl chamber 73. The bottom wall of the swirl groove 711 is connected to a first fin 712 and a second fin 713. The first fin 712 is spaced apart from the side wall of the swirl groove 711 to form a first tangential air inlet groove 714. The second fin 713 is spaced apart from the side wall of the swirl groove 711 to form a second tangential air inlet groove 715. A mixing groove 716 is formed between the first fin 712 and the second fin 713.

[0249] Specifically, the guide member 72 includes a plate-shaped portion 722, which covers one end of the swirl groove 711 and cooperates with the swirl groove 711 to form a swirl cavity 73, and the plate-shaped portion 722 serves as the bottom wall of the swirl cavity 73. Figures 42A to 44B As shown, in one embodiment, the first fin 712 and the second fin 713 are both arc-shaped, and one end of the first fin 712 and the second fin 713 are connected to the side wall of the swirl groove 711, and the other end is spaced apart from the side wall of the swirl groove 711, so that the first tangential air inlet groove 714 and the second tangential air inlet groove 715 can both be connected to the mixing groove 716. The diameter of the inscribed circle of the mixing groove 716 formed by the arc-shaped first fin 712 and the second fin 713 is less than or equal to 12 mm. Preferably, the diameter of the inscribed circle of the mixing groove 716 is 8 mm-10 mm. For example, the diameter of the inscribed circle of the mixing groove 716 is 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, or any other value. The height of the swirl chamber 73 is not less than 6 mm. For example, the height of the swirl chamber 73 is 7 mm, 7.6 mm, 8 mm, 8.2 mm, 8.7 mm, 8.9 mm, 9 mm, 9.5 mm, or any other value. The airflow can play a role in swirl acceleration, which is convenient for fully deagglomerating the powder in the process of transferring the powder from the powder inlet 518 to the powder outlet 74.

[0250] like Figure 44A As shown, the plate-like portion 722 of the guide member 72 is respectively provided with a first tangential air inlet 717 and a second tangential air inlet 718 corresponding to the first tangential air inlet groove 714 and the second tangential air inlet groove 715. The first tangential air inlet 717 and the second tangential air inlet 718 are notches provided on the plate-like portion 722. During the user's inhalation process, after the external air flow enters the interior of the shell 1 through the external air inlet 14, it can enter the first tangential air inlet groove 714 and the second tangential air inlet groove 715 through the first tangential air inlet 717 and the second tangential air inlet 718 respectively, and then enter the mixing groove 716 after flowing through the first tangential air inlet groove 714 and the second tangential air inlet groove 715. The tangential air flow entering the first tangential air inlet groove 714 and the second tangential air inlet groove 715 can deagglomerate the powder more efficiently, improve the deagglomeration effect, and avoid waste.

[0251] Preferably, the powder inlet 518 is located on the bottom wall of the first tangential air inlet groove 714. It can be understood that compared with setting the powder inlet 518 on the bottom wall of the mixing groove 716, the powder inlet 518 is located on the bottom wall of the first tangential air inlet groove 714. The flow path of the powder in the cyclone chamber 73 can be increased, and the path through which the powder flows from the powder inlet 518 into the mixing groove 716 is longer, which is more conducive to the disaggregation of the powder and improves the disaggregation effect.

[0252] like Figure 42B and Figure 43As shown, in one embodiment, the powder inlet 518 is located at the first end of the first tangential air inlet groove 714, and the first end of the first tangential air inlet groove 714 is connected to the mixing groove 716. It can be understood that the powder inlet 518 is arranged on the bottom wall of the first tangential air inlet groove 714 near the first end of the mixing groove 716, and the first end of the first tangential air inlet groove 714 is relatively narrow, and the air flow rate is faster, which is more conducive to the deagglomeration of the powder and improves the deagglomeration effect.

[0253] like Figure 42B 、 Figure 44A and Figure 44B As shown, the plate-like portion 722 of the guide member 72 has two inclined guide ribs 723 on its surface near the swirl member 71. These two inclined guide ribs 723 are respectively embedded in the first tangential air inlet groove 714 and the second tangential air inlet groove 715, and cooperate with the first and second tangential air inlet grooves 714, 715 to form the first and second tangential air inlet channels 75, 76, respectively. The surface of the inclined guide rib 723 facing the swirl groove 711 is a guide slope. The height of the inclined guide rib 723 gradually increases along the air inlet direction of the first and second tangential air inlet grooves 714, 715. In one embodiment, the projection of the inclined guide rib 723 on the swirl member 71 covers the powder inlet port 518. It can be understood that the two inclined guide ribs 723 are respectively embedded in the first tangential air inlet groove 714 and the second tangential air inlet groove 715, and the height of the inclined guide rib 723 gradually increases in the air inlet direction, which can compress the airflow entering the first tangential air inlet groove 714 and the second tangential air inlet groove 715, so that the closer the first tangential air inlet groove 714 and the second tangential air inlet groove 715 are to the mixing groove 716, the faster the airflow flows, and the swirl converges toward the powder outlet 74, thereby enhancing the deagglomeration effect of the airflow on the powder, being more conducive to deagglomerating the powder, and avoiding powder waste caused by inadequate deagglomeration of the powder.

[0254] See also Figure 44A and Figure 44B The flow guide 72 also has a connecting rib 725 that matches the mixing groove 716. The connecting rib 725 is located on the surface of the plate-shaped portion 722 of the flow guide 72 near the swirl element 71. The connecting rib 725 is embedded in the mixing groove 716 and cooperates with the mixing groove 716 to form a mixing chamber 77. The top surface of the connecting rib 725 is connected to the inclined guide surface of the inclined guide rib 723. The powder outlet 74 passes through the connecting rib 725 and the plate-shaped portion 722. One end of the powder outlet 74 is connected to the mixing groove 716 and the other end is connected to the powder outlet channel 721. The powder and air flow entering the mixing groove 716 through the first tangential air inlet groove 714 and the second tangential air inlet groove 715 flow downward through the mixing groove 716, then enter the powder outlet channel 721 through the powder outlet 74 and ultimately flow to the suction nozzle 13 to be inhaled by the user.

[0255] See also Figures 45 to 47 In another embodiment, the surface of the flow guide 72 near the swirl member 71 has a swirl groove 711. The swirl groove 711 includes a mixing groove 716 and a first tangential air inlet groove 714 and a second tangential air inlet groove 715 respectively connected to two opposite side walls of the mixing groove 716. The powder outlet 74 is located on the bottom wall of the mixing groove 716 and connected to the powder outlet channel 721. The ports of the first tangential air inlet groove 714 and the second tangential air inlet groove 715 at one end away from the mixing groove 716 are a first tangential air inlet 717 and a second tangential air inlet 718, respectively.

[0256] Preferably, the distance between the powder outlet 74 and the side of the mixing tank 716 is no greater than 2 mm. This can eliminate powder residue between the powder outlet 74 and the side of the mixing tank 716 and avoid excessive distance between the powder outlet 74 and the side of the mixing tank 716, which can cause powder to be deposited between the powder outlet 74 and the side of the mixing tank 716 during the user's inhalation process, resulting in powder waste and inaccurate dosage. Specifically, the angle between the bottom and side of the swirl tank 711 is 85-95 degrees. Preferably, the angle between the bottom and side of the swirl tank 711 is 90 degrees, which facilitates demolding during the preparation of the guide member 72.

[0257] In this embodiment, the swirl member 71 covers the swirl groove 711 of the guide member 72 and forms a swirl chamber 73, and cooperates with the first tangential air inlet groove 714 and the second tangential air inlet groove 715 to form a first tangential air inlet channel 75 and a second tangential air inlet channel 76 respectively. Figure 46 As shown, the surface of the swirl member 71 near the guide member 72 has a cylindrical protrusion 719 and multiple inclined guide ribs 710. Along the air inlet direction of the first tangential air inlet groove 714 and the second tangential air inlet groove 715, the height of the inclined guide ribs 710 gradually increases, and the height of the cylindrical protrusion 719 is greater than the maximum height of the inclined guide ribs 710. It can be understood that the provision of multiple inclined guide ribs 710 can guide the direction of the airflow, causing the airflow to form a vortex within the swirl chamber 73. The gradual increase in the height of the inclined guide ribs 710 along the air inlet direction can also compress the airflow, further promoting the deagglomeration of the powder. The cylindrical protrusion 719 protruding from the inclined guide ribs 710 also helps to extend the airflow's rotation path, thereby better deagglomerating the powder.

[0258] Specifically, such as Figure 46As shown, in one embodiment, there are two inclined guide ribs 710, which are centrally symmetrically arranged. The curvature of the outer side of each inclined guide rib 710 is greater than 90 degrees. Preferably, the curvature of the outer side of the inclined guide rib 710 is greater than or equal to 120 degrees and less than or equal to 150 degrees. More preferably, the curvature of the outer side of the inclined guide rib 710 is specifically 135 degrees. The inclined guide rib 710 is embedded in the mixing groove 716 of the guide member 72. The outer side of the inclined guide rib 710 is a circular surface and is aligned with the side of the mixing groove 716. The inner side of the inclined guide rib 710 is a circular surface and is aligned with the side of the cylindrical protrusion 719. The alignment of the outer side of the inclined guide rib 710 with the side of the mixing groove 716 can prevent the powder in the swirl groove 711 from leaking through the gap between the outer side of the inclined guide rib 710 and the side of the mixing groove 716, thereby avoiding powder waste. In other embodiments, the inclined guide ribs 710 can also be set to any number such as three, four, or five, and the curvature of the outer surface of the inclined guide rib 710 can be set to any value, as long as the direction of the airflow can be guided so that the airflow forms a vortex in the vortex chamber 73, thereby intensifying the disaggregation of the powder.

[0259] like Figure 46 As shown, the powder inlet 518 passes through one of the inclined guide ribs 710. Specifically, the powder inlet 518 is located at the starting position of the guide slope of the inclined guide rib 710. The starting position is the position where the height of the inclined guide rib 710 is the smallest, which is more conducive to extending the flow path of the powder and improving the deagglomeration effect.

[0260] In one embodiment, the surface of the swirl member 71 close to the guide member 72 has a cylindrical protrusion and a plurality of inclined guide ribs 710. The cylindrical protrusion can be a cylindrical protrusion 719. The plurality of inclined guide ribs 710 are arranged around the cylindrical protrusion. Figure 46 As shown, the side of the cylindrical protrusion has a baffle 78, which is spaced apart from the powder inlet 518, and the projection of the baffle 78 on the swirl member 71 covers the powder inlet 518. It can be understood that by providing the baffle 78, and the projection of the baffle 78 covering the powder inlet 518, the baffle 78 can block the powder and airflow entering the swirl groove 711 through the powder inlet 518, which can appropriately extend the residence time of the powder in the swirl chamber 73, and facilitate more complete deagglomeration of the powder. In other embodiments, the baffle 78 can also be set on the side of the powder outlet 74, and the projection of the baffle 78 on the swirl member 71 covers the powder inlet 518 to block the powder and airflow entering the swirl groove 711 through the powder inlet 518.

[0261] In the present application, the swirl chamber 73 includes a mixing chamber 77 and a first tangential air inlet channel 75 and a second tangential air inlet channel 76 respectively connected to two opposite side walls of the mixing chamber 77. By setting the air inlet port 417 of the air channel groove 416 at the bottom of the powder container 41, that is, the air inlet port 417 of the air flow channel Q1 and the first tangential air inlet 717 and the second tangential air inlet 718 of the guide member 72, the areas of the air inlet port 417, the first tangential air inlet 717 and the second tangential air inlet 718 of the air flow channel Q1 are adjusted, so that the gas flow rate of the air flow channel Q1 can account for 8 to 25% of the total gas flow rate of the air flow channel Q1, the first tangential air inlet channel 75 and the second tangential air inlet channel 76, so as to achieve a better emptying effect and generate a suitable suction resistance.

[0262] During the triggering stroke, the powder and airflow flow through the first tangential air inlet channel 75 and the second tangential air inlet channel 76 and enter the mixing chamber 77. After being fully deagglomerated and flowing through the mixing chamber 77, they are discharged to the suction nozzle 13 through the powder outlet 74 and the powder outlet channel 721 in turn and inhaled by the user.

[0263] See Figures 48 to 49 , Figure 48 is an aerodynamic particle size distribution diagram of the first powder in the powder inhalation device, Figure 49 is an aerodynamic particle size distribution diagram of the second powder in the powder inhalation device.

[0264] See also Figures 48 to 49 In order to verify the deagglomeration effect of the deagglomeration mechanism of the powder inhalation device 100 of the present application, the inventors of the present application used two different drug powders to conduct the same experiment using the powder inhalation device 100 provided by the present application at the same inhalation airflow rate. Specifically, when the inhalation airflow rate was 60L / min, the experiment obtained the following results: Figure 48 and Figure 49 The experimental data shown and the experimental results are shown in the following table:

[0265] parameter First powder Second powder Delivered dose 5.51 μg 93.15 μg Fine particle dose FPD 3.82 μg 61.16 μg Fine particle fraction FPF 69.34％ 65.66％ Mass median particle size MMAD 1.696μm 1.559μm Geometric standard deviation GSD 2.46 2.44

[0266] The inventors analyzed the experimental data and results and found that in the powder inhalation device 100 of the present application, under the same experimental conditions, the fine particle fraction of the two different powders reached more than 60%, and the mass median particle size of the first powder and the second powder after deagglomeration was both below 2 μm. The experimental results show that the deagglomeration mechanism of the powder inhalation device 100 of the present application has a good deagglomeration effect and a strong ability to deagglomerate powders.

[0267] (5) Counting mechanism

[0268] See Figures 50A to 53 , Figure 50A yes Figure 1A schematic diagram of the structure of the counting mechanism of the powder inhalation device provided, Figure 50B yes Figure 50A The decomposition diagram of the counting mechanism is provided. Figure 51 yes Figure 50A The structural diagram of the units counting wheel of the counting mechanism provided is as follows: Figure 52 yes Figure 50A The structural diagram of the counter base of the counting mechanism provided, Figure 53 yes Figure 50A A schematic structural diagram of the tens counting wheel of the counting mechanism provided.

[0269] See also Figures 50A to 53 The counting mechanism is disposed within the housing 1 and is assembled and connected to the bracket 64 of the trigger mechanism and the powder container 41 of the air compression mechanism. Specifically, the counting mechanism is located on the side of the pawl 62 away from the mounting base 51. The counting mechanism includes a counter base 81, a units counting wheel 82, a tens counting wheel 83, and a counter intermediate gear 84. The counting mechanism realizes the counting function through the cooperation of the pawl 62 and the connecting rod 42.

[0270] Specifically, the units counting wheel 82 and the tens counting wheel 83 are both mounted on the counter base 81. A first mounting groove 811 and a second mounting groove 812 are provided on a surface of the counter base 81. The first mounting groove 811 and the second mounting groove 812 are concentrically spaced and have a common side wall. The second mounting groove 812 is located outside the first mounting groove 811. The units counting wheel 82 is arranged in the first mounting groove 811, and the tens counting wheel 83 is arranged in the second mounting groove 812. The units counting wheel 82 is arranged around the tens counting wheel 83.

[0271] The units counter wheel 82 is provided with a plurality of teeth distributed along the circumference. When the powder inhaler 100 is in the closed state, the outer cover 2 is in the first position, the cam 22 of the outer cover 2 limits the connecting rod 42 to the third position, the counting block 424 of the connecting rod 42 limits the pawl 62 to the ninth position, and the pawl 62 is engaged with a tooth of the units counter wheel 82. For details, see Figure 32A and Figure 32B, the hook 6231 at one end of the first cantilever 623 of the pawl 62, away from the plate 622, hooks onto a tooth of the units counter wheel 82. During the lid opening process, when the trigger mechanism performs the trigger stroke, the pawl 62 rotates from the ninth position to the tenth position, and the hook 6231 at one end of the first cantilever 623 of the pawl 62 rotates accordingly. When the pawl 62 rotates to the tenth position, the hook 6231 at one end of the first cantilever 623 of the pawl 62 engages with the next tooth of the units counter wheel 82. During the lid closing process, the lid closing stroke includes a counting stroke. Within the counting stroke, the connecting rod 42 begins to return from the fourth position to the third position, driving the pawl 62 to return and rotate from the tenth position to the ninth position. During the process of returning and rotating the pawl 62 from the tenth position to the ninth position, the hook 6231 at one end of the first cantilever 623 of the pawl 62 hooks onto a tooth of the units counter wheel 82, and the pawl 62 reverses and drives the units counter wheel 82 forward one step, thereby counting one number.

[0272] like Figure 51 and Figure 52 As shown, a third mounting groove 813 is further provided on the counter base 81, and the third mounting groove 813 is located in the second mounting groove 812. The counter intermediate gear 84 is installed on the second mounting groove 812 of the counter base 81, and the counter intermediate gear 84 realizes transmission by meshing the gear features with the gear features of the tens counting wheel 83.

[0273] like Figures 51 to 53 As shown, the tens counter wheel 83 is provided with a mounting hole 831, and the counter base 81 is provided with a buckle post 814. The mounting hole 831 on the tens counter wheel 83 cooperates with the buckle post 814 on the counter base 81 to achieve an assembled connection. The units counter wheel 82 is also provided with a toothed shift post 822. The surfaces of the units counter wheel 82 and the tens counter wheel 83 away from the counter base 81 are both printed with numbers. The toothed shift post 822 on the units counter wheel 82 cooperates with the counter intermediate gear 84. When the units counter wheel 82 completes one rotation and transitions from the number "0" to the number "9", the toothed shift post 822 on the units counter wheel 82 drives the counter intermediate gear 84 to rotate two teeth. Since the tens counter wheel 83 is meshed with the counter intermediate gear 84, the tens counter wheel 83 synchronously rotates two teeth to achieve a one-digit transition.

[0274] See also Figure 2 and Figure 41 A digital display window 122 is provided on the lower shell 12, and the tens counting wheel 83 also has a full red warning feature. When the full red warning feature of the tens counting wheel 83 is displayed in the digital display window 122 on the lower shell 12, the tens counting wheel 83 is limited and no longer rotates.

[0275] Further, such as Figure 51 and Figure 52As shown, a limit spring arm 815 is also provided on the counter base 81. The limit spring arm 815 is used to limit the unidirectional rotation of the counting mechanism. Specifically, the limit spring arm 815 cooperates with the teeth on the units digit counting wheel 82 to achieve unidirectional rotation of the units digit counting wheel 82. That is, when the pawl 62 rotates, the hook 6231 of the pawl 62 scrapes the units digit counting wheel 82. Due to the action of the limit spring arm 815 on the counter base 81 on the teeth of the units digit counting wheel 82, the units digit counting wheel 82 does not rotate with the pawl 62. When the pawl 62 returns to its original position and rotates, the hook 6231 on the pawl 62 hooks and pulls the units digit counting wheel 82 to rotate, achieving unidirectional decrement counting. This arrangement can effectively prevent the hook 6231 from driving the units digit counting wheel 82 when the pawl 62 rotates, thereby preventing the counter from abnormally rotating.

[0276] In this embodiment, the counting mechanism's counting stroke occurs during the lid closing process, specifically, during the process of the trigger mechanism's pawl 62 returning to its ninth position. During the counting stroke, the pawl 62 releases its restraint on the air inlet baffle 63 during its return from the tenth position to the ninth position, allowing the third elastic member 66 to drive the air inlet baffle 63 to return from its thirteenth position to its eleventh position. The lid closing stroke also includes a dose reset stroke, which follows the counting stroke. During this dose reset stroke, the connecting rod 42 continues its return movement. The movement of the connecting rod 42 causes the protrusion 422 of the connecting rod 42 to act on the reset protrusion 533 of the slider 521 of the dose assembly 52, driving the dose assembly 52 to return from the sixth position to the fifth position. During this process, the extruding spring arm 535 of the slider 521 of the dose assembly 52 abuts the dose protection plate 61. The movement of the dose assembly 52 drives the dose protection plate 61 to return from the eighth position to the seventh position, completing the reset of all functional mechanisms.

[0277] For details, see Figure 7A and Figure 7B During the closing process of the outer cover 2, within the counting stroke and the dose resetting stroke, the abutting end 421 of the connecting rod 42 slides from the end of the second arc surface segment 224 away from the flat segment 221 along the second arc surface segment 224, the first arc surface segment 222 and the flat segment 221 to the position of the limiting protrusion 223 and passes over the limiting protrusion 223 to complete the reset. The connecting rod 42 returns from the fourth position to the third position, and the outer cover returns from the second position to the first position, completing the closing of the cover.

[0278] For ease of understanding, the following describes the specific operating states of the powder inhalation device 100, as well as the coordination and linkage of various functional mechanisms, from opening the cover to closing the cover, i.e., the entire process from the outer cover 2 rotating from the first position to the second position, the user taking a puff, and the outer cover 2 rotating from the second position to the first position.

[0279] (1) Opening stroke

[0280] The rotational distance of the outer lid 2 from the first position to the second position is defined as the opening stroke. The angle of the outer lid 2 in the first position is defined as 0 degrees. The angle of the outer lid 2 in the second position is within the range of 120 to 180 degrees. In one embodiment, the angle of the outer lid 2 in the second position is 135 degrees. In one embodiment, the torque within the opening stroke is 0.07-0.28 N·m. The opening stroke includes a sequentially arranged air compression stroke, a delivery stroke, and an unlocking stroke that is performed synchronously with the air compression stroke and the delivery stroke.

[0281] During the compression stroke, the outer cover 2 rotates from the first position to the second position, and the cam 22 gradually gives way, allowing the compression spring 45 to drive the connecting rod 42 to begin moving from the third position to the fourth position. The compression spring 45 compresses the airbag 44 to pressurize the powder container 41, filling the powder container 41 into the metering cup 523 of the dosage assembly 52. ​​In one embodiment, at the end of the compression stroke, the outer cover 2 rotates to 50 degrees.

[0282] During the delivery stroke, the connecting rod 42 continues to move and releases the retaining force exerted by the engaging portion 513 of the mounting seat 51 on the first elastic arm catch 524 of the slider 521 of the dosing assembly 52, causing the first elastic member 536 to drive the dosing assembly 52 from the fifth position to the sixth position. The metering cup 523 of the dosing plate 522 of the dosing assembly 52 moves from the powder filling position to the powder delivery position, i.e., positioned on the airflow channel Q1. During this process, the port 5191 of the pressure relief port 519 is exposed, the connecting rod 42 continues to move toward the fourth position, and the compression spring 45 continues to compress the airbag 44. The airflow generated by the compression of the airbag 44 is sequentially discharged through the pressure relief hole 414 and the pressure relief port 519, achieving pressure relief.

[0283] During the unlocking stroke, the connecting rod 42 moves downward to release the restriction on the pawl 62 of the trigger mechanism. The pawl 62 abuts against the air intake baffle 63 of the trigger mechanism and is restrained in the ninth position by the air intake baffle 63. Specifically, the unlocking stroke also begins when the compression stroke begins. The unlocking stroke begins when the connecting rod 42 moves from the third position to the fourth position. The movement of the connecting rod 42 causes the counting block 424 of the connecting rod 42 to move downward, releasing the restriction of the counting block 424 on the fourth cantilever 6222 of the pawl 62. When the connecting rod 42 moves to the fourth position at the end of the delivery stroke, the unlocking stroke ends. The abutting arc surface 6242 of the pawl 62 abuts against the locking arc surface 639 of the air intake baffle 63, and the pawl 62 is restrained in the ninth position by the air intake baffle 63.

[0284] (2) Triggering the trip

[0285] After the opening stroke, that is, after the outer cover 2 rotates to the second position, the suction nozzle 13 of the powder inhalation device 100 is exposed, and the user can inhale at the position of the suction nozzle 13 to perform the trigger stroke. In a specific embodiment, the angle of the outer cover 2 in the second position is 135 degrees.

[0286] When the user's inhaled airflow rate exceeds a preset threshold, that is, when the negative pressure triggering the inlet passage 641 exceeds a preset value, the inlet baffle 63 rotates from the eleventh position to the twelfth position, opening the inlet passage 641. The swing member 633 of the inlet baffle 63 disengages from the first abutment portion 6241 of the second cantilever 624 of the pawl 62, releasing the restraint on the pawl 62. The fourth elastic member 67 then drives the pawl 62 to rotate from the ninth position to the tenth position. In one embodiment, when the user's inhaled airflow rate reaches 15 LPM or higher, the trigger mechanism is triggered, entering the triggering stroke.

[0287] As the pawl 62 rotates from the ninth position to the tenth position, the pressure block 629 of the pawl 62 squeezes the second elastic arm latch 538 of the mounting base 51, deforming it. This triggers the second elastic arm latch 538 to release the retaining force on the dose protection plate 61, causing the second elastic member 65 to move the dose protection plate 61 from the seventh position to the eighth position, exposing the metering cup 523 of the dose plate 522 to the airflow channel Q1. Simultaneously, the pawl 62 drives the air intake baffle 63 from the twelfth position to the thirteenth position, thereby triggering the air intake channel 641 to open to its maximum angle. When the pawl 62 is in the tenth position, it engages with the next tooth of the units counter wheel 82, and the pawl 62 retains the air intake baffle 63 in the thirteenth position. After the trigger air inlet channel 641 is opened, the external atmosphere can enter the air flow channel Q1 through the external air inlet 14 and the trigger air inlet channel 641. After flowing through the air flow channel Q1 and carrying the powder in the measuring cup 523, it enters the swirl chamber 73 through the powder inlet 518. After deagglomeration in the swirl chamber 73, it passes through the powder outlet 74 and the powder outlet channel 721 and finally flows to the suction nozzle 13 to be inhaled by the user, realizing the inhalation trigger function.

[0288] In the present application, the delivery stroke of the delivery mechanism and the user's inhalation triggering stroke are divided into two independent stages, which can effectively avoid the problem of accidental inhalation by the user during the delivery stroke.

[0289] (3) Closing stroke

[0290] The process of returning the outer cover 2 from the second position to the first position is defined as the cover-closing stroke. After the triggering stroke, during the return rotation of the outer cover 2 from the second position to the first position, the cam 22 drives the connecting rod 42 from the fourth position to the third position and compresses the compression spring 45. The cover-closing stroke includes the counting stroke and the dose reset stroke, which are sequentially arranged. In one embodiment, the torque during the cover-closing stroke is 0.14-0.40 N·m.

[0291] During the counting stroke, the connecting rod 42 begins to reset from the fourth position to the third position. The counting block 424 of the connecting rod 42 abuts the fourth cantilever 6222 of the pawl 62, forcing the pawl 62 to reset from the tenth position to the ninth position. The process of the pawl 62 resetting from the tenth position to the ninth position causes the units counter wheel 82 to advance one step and count one number. During this process, the first abutting portion 6241 of the second cantilever 624 of the pawl 62 releases the restraint on the air inlet baffle 63. The second abutting portion 628, through abutting the second inclined surface 6332 of the rocker element 633, applies a reversing triggering force to the air inlet baffle 63, causing the third elastic member 66 to reset the air inlet baffle 63 from the thirteenth position to the eleventh position. In this application, counting occurs only during the lid closing reset stroke after the user inhales the powder after the trigger mechanism is triggered, ensuring precise dosing and counting accuracy. When the connecting rod 42 resets to the third position, the air compression mechanism also completes its reset.

[0292] The powder inhalation device 100 provided by the present application has multiple functional mechanisms that are assembled and linked to each other to realize various functions. The powder inhalation device 100 has fewer parts, a simple structure, is easy to assemble, and has a low cost. During the opening and closing of the cover, the various functional mechanisms are linked and coordinated, the opening and closing of the cover is continuous, the structure is more reliable, the device has a strong anti-interference ability, and will not accidentally open under external force impact. The transmission chain of each functional mechanism of the powder inhalation device 100 is short, and the manufacturing precision requirements are low, which is conducive to cost saving. During the opening and closing of the cover, the movement speed of each functional structure is mainly determined by the structure and performance of each elastic member, and is unrelated to the movement speed and state of the cam 22 and the connecting rod 42 of the outer cover 2, and has high stability.

[0293] The above description is merely an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A deagglomeration mechanism, characterized in that: include: Swirl parts; A flow guide member, cooperating with the swirl member to form a swirl chamber; The top wall of the swirl chamber has a powder inlet, the bottom wall of the swirl chamber has a powder outlet, and the flow guide has a powder outlet channel connected to the powder outlet.

2. The deagglomeration mechanism according to claim 1, characterized in that: The swirl member has a swirl groove on its surface close to the guide member, the bottom wall of the swirl groove serves as the top wall of the swirl chamber, the bottom wall of the swirl groove is connected to a first fin and a second fin, the first fin and the side wall of the swirl groove are spaced apart to form a first tangential air inlet groove, the second fin and the side wall of the swirl groove are spaced apart to form a second tangential air inlet groove, and a mixing groove is formed between the first fin and the second fin; the powder inlet is located on the bottom wall of the first tangential air inlet groove; the guide member covers the swirl groove to form the swirl chamber.

3. The deagglomeration mechanism according to claim 2, characterized in that: The powder inlet is located at a first end of the first tangential air inlet groove, and the first end of the first tangential air inlet groove is communicated with the mixing groove.

4. The deagglomeration mechanism according to claim 2 or 3, characterized in that: The surface of the guide member close to the swirl member has two inclined guide ribs; the two inclined guide ribs are respectively embedded in the first tangential air inlet groove and the second tangential air inlet groove; the height of the inclined guide ribs gradually increases along the air inlet direction of the first tangential air inlet groove and the second tangential air inlet groove; the projection of the inclined guide rib on the swirl member covers the powder inlet.

5. The deagglomeration mechanism according to claim 4, characterized in that: The surface of the guide member close to the swirl member further has a connecting rib matching the mixing groove, and the powder outlet passes through the connecting rib; the top surface of the connecting rib is connected to the guide inclined surface of the inclined guide convex rib.

6. The deagglomeration mechanism according to claim 1, characterized in that: The guide member has a swirl groove on its surface close to the swirl member, and the swirl groove includes a mixing groove and a first tangential air inlet groove and a second tangential air inlet groove respectively connected to two opposite side walls of the mixing groove; the powder outlet is located on the bottom wall of the mixing groove, and the distance between the powder outlet and the side of the mixing groove is not greater than 2 mm.

7. The deagglomeration mechanism according to claim 6, characterized in that: The swirl member covers the swirl groove to form the swirl chamber; the surface of the swirl member close to the guide member has a cylindrical protrusion and multiple inclined guide ribs, and the height of the inclined guide ribs gradually increases along the air intake direction of the first tangential air intake groove and the second tangential air intake groove; the height of the cylindrical protrusion is greater than the maximum height of the inclined guide ribs.

8. The deagglomeration mechanism according to claim 7, characterized in that: The number of the inclined guide ribs is two, and the two inclined guide ribs are symmetrically arranged with respect to the center, and the curvature of the outer side surface of each inclined guide rib is greater than 90 degrees; the inclined guide rib is embedded in the mixing trough, and the outer side surface of the inclined guide rib is a circular arc surface and fits with the side surface of the mixing trough, and the inner side surface of the inclined guide rib is a circular arc surface and fits with the side surface of the cylindrical protrusion.

9. The deagglomeration mechanism according to claim 7 or 8, characterized in that: The powder inlet passes through the inclined guide rib.

10. The deagglomeration mechanism according to claim 9, characterized in that: The powder inlet is located at a slope starting position of the guide slope of the inclined guide rib.

11. The deagglomeration mechanism according to claim 6, characterized in that: The swirl member covers the swirl groove to form the swirl chamber; the surface of the swirl member close to the guide member has a cylindrical protrusion and a plurality of inclined guide ribs, and the plurality of inclined guide ribs are arranged around the cylindrical protrusion; the side of the cylindrical protrusion has a baffle or the side of the powder outlet has a baffle, the baffle is arranged at a distance from the powder inlet, and the projection of the swirl member on the powder inlet covers the powder inlet.

12. A powder inhalation device, characterized in that: include: a powder container having a powder outlet at the bottom; a delivery mechanism, disposed at the bottom of the powder container; An air flow channel is formed between the delivery mechanism and the powder container; the delivery mechanism includes a mounting seat and a dosing assembly; the dosing assembly is slidably disposed between the mounting seat and the powder container; the dosing assembly is capable of moving back and forth between the powder outlet and the air flow channel to deliver the powder in the powder container to the air flow channel; a deagglomeration mechanism, disposed at the bottom of the powder container; Wherein, the deagglomeration mechanism is the deagglomeration mechanism according to any one of claims 1 to 11; one end of the air flow channel is connected to the cyclone chamber through the powder inlet.

13. The powder inhalation device according to claim 12, characterized in that The swirl chamber has a mixing chamber and a first tangential air inlet channel and a second tangential air inlet channel respectively connected to two opposite side walls of the mixing chamber; the gas flow of the air flow channel accounts for 8-25% of the total gas flow of the air flow channel, the first tangential air inlet channel and the second tangential air inlet channel.

14. The powder inhalation device according to claim 12, characterized in that The mounting seat and the swirl component are integrally formed.

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