Mechanical aerosol inhaler

Abstract

The utility model discloses a mechanical aerosol inhaler, which is characterized in that a driving rod comprises a main body part, a first extension part and a second extension part, the first extension part and the second extension part are fixedly connected with the main body part and extend towards the direction far away from the main body part, and a counting gear assembly is provided with a fixed part and a movable part; a first limiting structure and a second limiting structure are arranged on a fixing part of the counting gear assembly; the first extension part is connected with the first limiting structure to prevent the driving rod from being separated from the counting gear assembly; the free end of the second extension part is used for triggering the counting gear assembly to count; the main body part is connected with a second limiting structure on the counting gear assembly so as to limit the moving direction of the driving rod; in an application state, the main body part is in contact with a medicine bottle, so that the medicine bottle drives the main body part to move when a user presses the medicine bottle, and the elastic piece is connected with the driving rod and a fixing part in the counting gear assembly. The product is high in integration level, convenient to assemble, smaller in size and beneficial to improving the product yield.

Description

Technical Field

[0001] The utility model relates to a mechanical aerosol inhaler. Background Art

[0002] Aerosol inhalers have a counting function to remind users of the remaining amount of medicine.

[0003] The invention patent "Action indicator for a dispensing device" with authorization announcement number CN101853424B proposes a component for an action indicator, including: (a) an indicator wheel for indicating the action of a device related to the action indicator; (b) a rotating element of the action indicator, the indicator wheel engaging with the rotating element; (c) a first shaft, the indicator wheel being rotatably mounted on the first shaft; (d) a second shaft, the rotating element being rotatably mounted on the second shaft; wherein the first shaft and the second shaft are provided by a spring, the spring being used to bias the indicator wheel toward the rotating element in use, the spring comprising a biasing section, the biasing section connecting the first shaft and the second shaft to jointly bias the first shaft and the second shaft, the first shaft and the second shaft extending parallel to each other, and the first shaft and the second shaft being separated by a distance, the distance being greater than the distance between the first shaft and the second shaft in the static state of the spring.

[0004] The patent proposes a counting gear assembly consisting of a units gear, a tens gear and a hundreds gear, and proposes a structure for driving the counting gear assembly to count in sequence. The overall structure of the product is relatively complex, inconvenient to assemble and the overall size still needs to be reduced. Utility Model Content

[0005] The utility model provides a mechanical aerosol inhaler.

[0006] The technical solution of the utility model is as follows: a mechanical aerosol inhaler, comprising a housing, a driving rod, an elastic member and a counting gear assembly; the housing has a first opening for inserting a medicine bottle into the inner space of the housing, a second opening for spraying medicine toward a user, and a notch for assembling the counting gear assembly;

[0007] The driving rod includes a main body, a first extension part and a second extension part fixedly connected to the main body and extending in a direction away from the main body, the counting gear assembly includes a fixed part and a movable part, and the fixed part of the counting gear assembly is provided with a first limiting structure and a second limiting structure;

[0008] The first extension portion is connected to the first limiting structure to prevent the driving rod from being separated from the counting gear assembly;

[0009] The free end of the second extension portion is used to trigger the counting gear assembly to count;

[0010] The main body is connected to the second limiting structure on the counting gear assembly to limit the moving direction of the driving rod;

[0011] In the application state, the main body is in contact with the medicine bottle, so that when the user presses the medicine bottle, the medicine bottle presses the main body to drive the driving member to move;

[0012] An elastic member connects the drive rod and a fixed component in the counting gear assembly to reset the drive rod after the user releases the medicine bottle.

[0013] Optionally, the first limiting structure includes: a through hole opened on the fixed part of the counting gear assembly, a first extension portion passing through the through hole opened on the fixed part of the counting gear assembly, and a free end of the first extension portion being a cotter pin structure to prevent the driving rod from separating from the counting gear assembly.

[0014] Optionally, an extension direction of the first extension portion, an extension direction of the second extension portion, and a movement direction of the medicine bottle in the shell when the user presses the medicine bottle are the same.

[0015] Optionally, the second limiting structure on the counting gear assembly is a dovetail-type boss, the extension direction of the dovetail-type boss limits the moving direction of the driving rod, the cross-section of the dovetail-type boss is trapezoidal and the non-free edge of the cross-section is a short edge, a trapezoidal groove is arranged on the surface of one side of the main body facing the dovetail-type boss, the trapezoidal groove forms openings on two opposite surfaces of the main body along its moving direction, the cross-section of the trapezoidal groove is trapezoidal and the opening of the cross-section is the top edge, and the dovetail-type boss is inserted into the trapezoidal groove.

[0016] Optionally, the counting gear assembly includes a bracket and a counting gear, the bracket is a fixed component, the counting gear is a movable component, the bracket has plate-like structures opposite to each other along the width direction of the notch of the shell, and a second limiting structure for cooperating with the main body is arranged on the inner surface of one of the plate-like structures, the plate-like structure is a first plate-like structure, and the other plate-like structure is a second plate-like structure.

[0017] Optionally, the orthographic projection of the first plate-like structure on the plane where the second plate-like structure is located is located inside the second plate-like structure and has an area smaller than that of the second plate-like structure, and the counting gear assembly also includes a cover plate fixed to the first plate-like structure, the cover plate is used to close the missing part of the first plate-like structure, wherein the first limiting structure is arranged on the cover plate.

[0018] Optionally, the bracket and the cover plate are respectively provided with a positioning column and a buckle, and the shell is provided with a first positioning hole and a second positioning hole matching with the positioning column, the positioning column is inserted into the first positioning hole, and the buckle is inserted into the second positioning hole.

[0019] Optionally, the first positioning hole and the second positioning hole are formed on two third plate-shaped structures integrally formed with the shell.

[0020] Optionally, a rear cover is further included, which is fixed on the shell, closes the gap of the shell, and covers the counting gear assembly. A window is set on the rear cover for observing the count value of the counting gear assembly through the window.

[0021] Optionally, the window and the back cover are a two-color one-piece molding structure.

[0022] Optionally, the medicine bottle has a valve stem, and the shell further has a liquid inlet tube for connecting to the valve stem of the medicine bottle, and a nozzle part connected to the liquid inlet tube, and the outlet of the nozzle part is connected to the second opening of the shell.

[0023] The mechanical aerosol inhaler provided by the utility model has high integration, is easy to assemble, and has a smaller size due to the overall space compression. Another advantage of integrating the components of the driving part and the rotating part is that it can ensure that the kinematic pair of the driving part and the rotating part is controllable, that is, the kinematic pair of the driving part and the rotating part has higher motion stability and is more reliable, and the assembly of the two parts can be inspected in advance, thereby improving the product yield and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an appearance diagram of the mechanical aerosol inhaler of the utility model.

[0025] Figure 2 yes Figure 1 Exploded view of the mechanical aerosol inhaler shown.

[0026] Figure 3 yes Figure 1 Another exploded view of the mechanical aerosol inhaler shown.

[0027] Figure 4 yes Figure 1 A perspective view of the middle shell.

[0028] Figure 5 yes Figure 1 Cross-section of the middle shell.

[0029] Figure 6 yes Figure 1 A perspective view of the middle drive rod.

[0030] Figure 7 yes Figure 1 Schematic diagram of the cooperation between the middle driving rod and the elastic member.

[0031] Figure 8 yes Figure 1 A three-dimensional view of the counting gear assembly.

[0032] Fig. 9 yes Figure 1 Another stereoscopic view of the counting gear assembly.

[0033] The accompanying drawings are marked as follows: 1. shell; 11. fixing seat; 12. short side; 13. nozzle part; 14. liquid inlet pipe; 15. third plate-like structure; H1. first opening; H2. second opening; H3. first positioning hole; H4. second positioning hole; H5. third positioning hole; 2. cap; 3. back cover; 31. window; 32. back cover positioning column; 4. medicine bottle; 41. valve stem; 42. lower edge; 5. driving rod; 50. main body; 51. first extension; 53. second extension; 52. trapezoidal groove; 54. receiving surface; 6. Elastic member; 7. Counting gear assembly; 71. Bracket; 711. First buckle; 712. First positioning column; 72. Cover plate; 721. Second buckle; 722. Second positioning column; 723. Check cover plate; 724. Dovetail boss; 725. Through hole; 77. Units gear; 771. Units half-tooth; 76. Tens gear; 761. Tens half-tooth; 74. Hundreds gear; 741. Protruding structure; 75a. First linkage gear; 75b. Second linkage gear; 73a. First gear shaft; 73b. Second gear shaft. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with specific embodiments, but the protection scope of the present invention is not limited thereto.

[0035] refer to Figure 1 and Figure 2 The mechanical aerosol inhaler of the utility model embodiment comprises a housing 1, a cap 2, a rear cover 3, a driving rod 5, an elastic member 6 and a counting gear assembly 7. When in use, the mechanical aerosol inhaler cooperates with a medicine bottle 4.

[0036] refer to Figure 3 , the medicine bottle 4 is of conventional design, wherein a valve stem 41 and a lower edge 42 are marked. The valve stem 41 is coaxial with the lower edge 42 and has a diameter smaller than that of the lower edge 42.

[0037] refer to Figure 3 , Figure 4 and Figure 5 The housing 1 has a first opening H1 for inserting the medicine bottle 4 into the inner space of the housing 1, a liquid inlet pipe 14 for connecting to the valve stem 41 of the medicine bottle 4, and a nozzle portion 13 connected to the liquid inlet pipe 14, and a second opening H2 for spraying the medicine toward the user. The valve stem 41 and the liquid inlet pipe 14 are both located inside the fixing seat 11. The fixing seat 11 is an integrally formed component of the housing 1, and a portion of the inner surface of the fixing seat 11 forms the liquid inlet pipe 14.

[0038] When the user presses the medicine bottle 4 in the shell 1, the medicine liquid enters the liquid inlet tube 14 and the nozzle part 13 in sequence from the valve stem 41 of the medicine bottle 4, and the nozzle part 13 sprays the medicine liquid (for example, in the form of aerosol at this time) into the user's airway.

[0039] Specifically, refer to Figures 1 to 5 The shell 1 as a whole can be approximately L-shaped, and the first opening H1 for inserting the medicine bottle 4 into the internal space of the shell 1 is located at the free end of the long side of the L-shaped shell 1, and the second opening H2 is located at the free end of the short side 12 of the L-shaped shell 1 and communicates with the nozzle part 13. In fact, the angle a between the direction of the axis of the smallest enclosing cylinder of the long side from the non-free end of the long side to the free end of the long side and the direction of the axis of the smallest enclosing cylinder of the short side 12 from the non-free end of the short side 12 to the free end of the short side 12 can be: 90°≤a≤180°. In the extreme case, the extension directions of the long side and the short side 12 are the same, and at this time the first opening H1 and the second opening H2 of the shell 1 are opposite to each other.

[0040] The short side 12 is used as a nozzle opening.

[0041] refer to Figure 4 , four first positioning holes H3, two second positioning holes H4 and two third positioning holes H5 are provided on the shell 1. The first positioning hole H3 and the second positioning hole H4 are provided on two flat plate structures. The third positioning hole H5 is formed on the end face of the notch of the shell 1. These two flat plate structures are an integrally formed structure with the remaining components of the shell 1. The center line of the four first positioning holes H3 is a rectangle, the center line of the two first positioning holes H3 is parallel to the long side of the rectangle, and the center line of the two third positioning holes H5 is parallel to the long side of the rectangle. The opening directions of the first positioning hole H3, the second positioning hole H4 and the third positioning hole H3 are the same.

[0042] A notch is provided on the outer peripheral surface of the long side of the housing 1 (e.g., the surface of the long side away from the short side 12 thereof), and the notch is used to install the rear cover 3, the driving rod 5, the elastic member 6 and the counting gear assembly 7. It should be noted that the position of the notch can be flexibly set according to actual needs.

[0043] observe Figure 4 The first positioning hole H3, the second positioning hole H4 and the third positioning hole H5 can be seen through the gap, and the width direction of the gap is also the direction of the center line connecting the two second positioning holes H5.

[0044] The positioning holes may be aligned along the width direction of the notch, or may be offset along the width direction of the notch.

[0045] The cap 2 covers the short side portion 12 of the housing 1 to prevent the short side portion 12 from being contaminated, and also prevents the nozzle portion 13 from being contaminated.

[0046] In the embodiment of the utility model, after the counting gear assembly 7 , the elastic member 6 and the driving rod 5 are assembled together, the whole assembly is assembled with the housing 1 , and finally the rear cover 3 is assembled with the housing 1 .

[0047] refer to Figure 2 and Figure 3 as well as Figures 6 to 9 The driving rod 5 has a first extending portion 51 , a second extending portion 53 and a main body portion 50 .

[0048] For ease of description, three mutually perpendicular directions are defined: height direction, first width direction, and second width direction. In the installed state, the height direction is the same as the movement direction of the medicine bottle 4 (the axis direction of the smallest enclosing cylinder of the long side), and the second width direction is the width direction of the notch of the housing 1 for installing the counting gear assembly 7 ( Figure 5 The normal direction of ) is the same.

[0049] The first extension portion 51 is connected to the main body 50 and extends in the height direction. The direction in which the free end of the first extension portion 51 points to its non-free end is the direction in which the non-free end of the long side of the shell 1 points to its free end.

[0050] The free end of the first extension 51 is a split pin structure. The elastic member 6 is a spring, which is sleeved on the outer circumference of the first extension 51. One end of the spring abuts against the main body 50, and the other end abuts against the inactive area (i.e., the fixed part, not shown in the figures) of the counting gear assembly 7. For example, the other end of the spring abuts against the cover plate 72 or the bracket 71.

[0051] The second extension portion 53 is connected to the main body 50 and extends in the height direction. The direction in which the free end of the second extension portion 53 points to its non-free end is the direction in which the non-free end of the long side of the shell 1 points to its free end.

[0052] The direction from the first extension portion 51 to the second extension portion 53 is consistent with the direction of the notch on the long side of the housing 1. In some other embodiments, there is an angle greater than 0° between the two directions.

[0053] The free end of the second extension portion 53 facing away from the first extension portion 51 has an inclined surface to form a ratchet. The free end of the second extension portion 53 is used to move the counting gear set to trigger the counting gear set to count.

[0054] The side surface of the main body 50 closer to the housing 1 along the second width direction is a trapezoidal groove 52. That is, a groove is formed on the side surface of the main body 50 closer to the housing 1 along the second width direction, the size of the opening of the groove along the first width direction is smaller than the size of the groove bottom along the first width direction, and the groove extends to two surfaces of the main body 50 that are opposite to each other along the height direction. The cross section of the groove is a trapezoid.

[0055] The counting gear set is provided with a dovetail boss 724, which cooperates with the trapezoidal groove 52. When the driving rod 5 and the counting gear set are assembled, the trapezoidal groove 52 is made to slide along the dovetail boss 724, and the split pin is inserted into and passes through the through hole (for example, the through hole is formed on the cover plate 72) provided on the counting gear set. Figure 3 A protruding structure is provided on the inner surface of the cover plate 72, and a through hole 725 is formed on the protruding structure, and one end of the elastic member 6 abuts against the protruding structure where the through hole 725 is located).

[0056] The cotter pin prevents the driving rod 5 from being separated from the counting gear set, and the trapezoidal groove 52 is used to limit the moving track of the driving rod 5 .

[0057] In some other embodiments, the cotter pin may also be disposed on the fixing component of the housing 1 , and a through hole may be disposed on the first extension portion 51 to cooperate with the cotter pin.

[0058] The structure on the counting gear assembly 7 that cooperates with the first extending portion 51 is called a first limiting structure.

[0059] In some other embodiments, the positions of the trapezoidal groove 52 and the corresponding dovetail boss 724 can be interchanged, that is, the trapezoidal groove 52 is formed on the bracket 71 , and the dovetail boss 724 is formed on the driving rod 5 .

[0060] The structure on the counting gear assembly 7 that cooperates with the second extending portion 53 is called a second limiting structure.

[0061] Combination Figure 3 and Figure 6 The top of the side surface of the main body 50 facing away from the trapezoidal groove 52 along the second width direction is a curved receiving surface 54, which matches the lower edge 42 of the medicine bottle 4. The receiving surface 54 can also be a plane. When the user presses the medicine bottle 4, the lower edge 42 of the medicine bottle 4 contacts the curved surface of the main body 50 of the driving rod 5, and presses against the driving rod 5 so that the driving rod 5 moves along its height direction, thereby causing the second extension 53 of the driving rod 5 to toggle the counting gear set, and the rebound of the driving rod 5 is powered by the elastic member 6.

[0062] The utility model does not limit the internal structure and counting principle of the counting gear assembly, and can be designed according to the prior art. It only needs to provide a structure for limiting separation for the first extension portion 51 of the driving rod 5, be able to be driven by the second extension portion 53 of the driving rod 5 to trigger counting, limit the moving direction of the driving rod, and be driven by the lower edge 42 of the medicine bottle 4 to move.

[0063] For example, reference Figure 3 , Figure 8 and Fig. 9 , introduces the structure and counting principle of a counting gear assembly 7.

[0064] The counting gear assembly 7 includes: a first gear shaft 73a, a second gear shaft 73b, a units gear 77, a tens gear 76, a hundreds gear 74, a first linkage gear 75a and a second linkage gear 75b.

[0065] The ones gear 77, the tens gear 76 and the hundreds gear 74 use the first gear shaft 73a as the rotation axis, and the first linkage gear 75a and the second linkage gear 75b use the second gear shaft 73b as the rotation axis. One rotation of the ones gear 77 can drive the second linkage gear 75b to rotate one scale, and one rotation of the second linkage gear 75b can drive the tens gear 76 to rotate one scale. One rotation of the tens gear 76 can drive the first linkage gear 75a to rotate one scale, and one rotation of the first linkage gear 75a can drive the hundreds gear 74 to rotate one scale.

[0066] The first side of the units gear 77 along the axis direction of the first gear shaft 73a is a full gear. The gear of the units gear 77 along the second side of the axis direction of the first gear shaft 73a is only provided with two units half teeth 771. When the units gear 77 rotates one circle, its units half teeth 771 drives the second linkage gear 75b to rotate one scale.

[0067] The linkage mode of the tens gear 76 and the hundreds gear 74 is the same as above. Two tens half teeth 761 are arranged on the surface of the tens gear 76 facing the hundreds gear 74.

[0068] The ones gear 77 rotates one circle just to mesh with the second linkage gear 75b. The second linkage gear 75b is moved to rotate one scale, and the second linkage gear 75b is always meshed with the tens gear 76 to drive the tens gear 76 to rotate one scale. The tens gear 76 rotates one circle just to mesh with the first linkage gear 75a. The first linkage gear 75a is always meshed with the hundreds gear 74 to drive the hundreds gear 74 to rotate one scale.

[0069] The mechanical aerosol inhaler provided by the utility model has high integration, is easy to assemble, and the overall space size can be easily made smaller.

[0070] In one embodiment of the present invention, the outer circumference of the units gear 77 is marked with 0 to 9, with a 36 degree interval between each two digits, and the digits are evenly distributed in the range of 0 to 360 degrees; the outer circumference of the tens gear 76 is marked with 0 to 9, with a 36 degree interval between each two digits, and the digits are evenly distributed in the range of 0 to 360 degrees; the outer circumference of the hundreds gear 74 is marked with 0 to 1, with a 36 degree interval between each two digits, and the digits are evenly distributed in the range of 0 to 72 degrees. In this embodiment, the maximum initial count value is 120, and the minimum end count value is 000.

[0071] The counting gear assembly 7 further includes a non-return cover plate 723 for preventing the units gear 77 from reversing when the driving rod 5 is reset. The non-return cover plate 723 abuts against the units gear 77 so that the units gear 77 can only rotate in one direction but cannot rotate in the opposite direction.

[0072] A protruding structure 741 is provided on the surface of the side of the hundreds gear 74 facing away from the tens gear 76. The counting gear assembly 7 further includes a fixedly arranged limit platform (not shown). When the hundreds gear 74 decreases to the 0 scale, the limit platform abuts against the protruding structure 741 on the hundreds gear 74 to limit the hundreds gear 74 from continuing to rotate and decrease. When the counting gear assembly 7 counts and decreases to 000, the first linkage gear 75a, the second linkage gear 75b, the units gear 77, the tens gear 76 and the hundreds gear 74 are all meshed with each other. At this time, since the hundreds gear 74 cannot rotate in the direction of decreasing counting, the units gear 77 and the tens gear 76 cannot rotate in the direction of decreasing counting either.

[0073] The counting gear assembly 7 also includes a bracket 71 and a cover plate 72. A first positioning column 712 and a first buckle 711 are provided on the bracket 71, and a second positioning column 722 and a second buckle 721 are provided on the cover plate 72. The cover plate 72 covers an opening on one side of the bracket 71. The opening is used to install gears on the first gear shaft 73a and the second gear shaft 73b. The installation order is first the hundreds gear 74, the first linkage gear 75a, the tens gear 76, the second linkage pinion 75b, the ones gear 77, and then the cover plate 72 is covered.

[0074] The first positioning column 712 and the second positioning column 722 are respectively opposite to the four first positioning holes H3 on the housing 1. The first buckle 711 and the second buckle 721 are matched with the two second positioning holes H4 on the housing 1.

[0075] The fixed part of the counting gear assembly 7 is a part that is fixed relative to the housing 1 , and the movable part of the counting gear assembly 7 is a part that is movable relative to the fixed part of the counting gear assembly 7 .

[0076] The first positioning hole H1 and the second positioning hole H2 are formed on two third plate-shaped structures 15 integrally formed with the housing 1 .

[0077] observe Figure 8 and Fig. 9 Combined with Figure 3 The bracket 71 is a fixed component, and the bracket 71 has plate-like structures that are opposite to each other along the width direction of the notch of the housing 1 for assembling the counting gear assembly 7. The second limiting structure for cooperating with the main body 50 is arranged on the inner side surface of one of the plate-like structures, the plate-like structure is a first plate-like structure, and the other plate-like structure is a second plate-like structure. The second limiting structure is a dovetail boss 724.

[0078] The orthographic projection of the first plate-like structure on the plane where the second plate-like structure is located is located inside the second plate-like structure and has an area smaller than that of the second plate-like structure, and the cover plate 72 is used to close the missing part of the first plate-like structure, wherein the first limiting structure is arranged on the cover plate 72, that is, the cover plate 72 is provided with a through hole for the first extension portion 51 to pass through.

[0079] refer to Figure 3 , Figure 4 The mechanical aerosol inhaler further comprises a rear cover 3 fixed to the long side of the L-shaped housing 1 away from the short side 12 thereof, the rear cover 3 protrudes in a direction away from the housing 1 , and a viewing window 31 for viewing the counting gear assembly 7 is provided on the rear cover 3 .

[0080] The shape of the rear cover 3 is convenient for the user to hold and conforms to ergonomics. The user can observe the value displayed by the counting gear assembly 7 through the window 31 on the rear cover 3, so that the user can accurately grasp the remaining amount of the medicine and prepare the medicine in time.

[0081] The window 31 and the back cover 3 are formed in one piece by a two-color mold. The production quality is good, the efficiency is high, the product is stable and reliable, and the user experience is good. The color of the window 31 can be flexibly set, which is more user-friendly.

[0082] The housing 1 is provided with a third positioning hole H5 for cooperating with the rear cover positioning post 32 on the rear cover 3 to fix the rear cover 3 on the housing 1 .

[0083] The various embodiments of the present invention are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments.

[0084] The protection scope of the present invention is not limited to the above-mentioned embodiments. Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the scope and spirit of the present invention. If these modifications and variations fall within the scope of the claims of the present invention and their equivalents, the intent of the present invention also includes these modifications and variations.

Claims

1. A mechanical aerosol inhaler, characterized in that: The invention comprises a housing, a driving rod, an elastic member and a counting gear assembly; the housing has a first opening for inserting a medicine bottle into the inner space of the housing, a second opening for spraying medicine toward a user, and a notch for assembling the counting gear assembly; The driving rod includes a main body, a first extension part and a second extension part fixedly connected to the main body and extending in a direction away from the main body, the counting gear assembly includes a fixed part and a movable part, and the fixed part of the counting gear assembly is provided with a first limiting structure and a second limiting structure; The first extension portion is connected to the first limiting structure to prevent the driving rod from being separated from the counting gear assembly; The free end of the second extension portion is used to trigger the counting gear assembly to count; The main body is connected to the second limiting structure on the counting gear assembly to limit the moving direction of the driving rod; In the application state, the main body is in contact with the medicine bottle, so that when the user presses the medicine bottle, the medicine bottle presses the main body to drive the driving member to move; An elastic member connects the drive rod and a fixed component in the counting gear assembly to reset the drive rod after the user releases the medicine bottle.

2. The mechanical aerosol inhaler according to claim 1, characterized in that: The first limiting structure includes: a through hole opened on the fixed part of the counting gear assembly, a first extension portion passing through the through hole opened on the fixed part of the counting gear assembly, and a free end of the first extension portion being a cotter pin structure to prevent the driving rod from separating from the counting gear assembly.

3. The mechanical aerosol inhaler according to claim 1, characterized in that: The extending direction of the first extending portion, the extending direction of the second extending portion, and the moving direction of the medicine bottle in the shell when the user presses the medicine bottle are the same.

4. The mechanical aerosol inhaler according to claim 1, characterized in that: The second limiting structure on the counting gear assembly is a dovetail boss, the extension direction of the dovetail boss limits the moving direction of the driving rod, the cross-section of the dovetail boss is trapezoidal and the non-free edge of the cross-section is the top edge, a trapezoidal groove is arranged on the surface of the main body facing the dovetail boss, the trapezoidal groove forms an opening on two surfaces of the main body opposite to each other along its moving direction, the cross-section of the trapezoidal groove is trapezoidal and the opening of the cross-section is the top edge, and the dovetail boss is inserted into the trapezoidal groove.

5. The mechanical aerosol inhaler according to claim 1, characterized in that: The counting gear assembly includes a bracket and a counting gear, the bracket is a fixed component, the counting gear is a movable component, the bracket has plate-like structures opposite to each other along the width direction of the notch of the shell, and the second limiting structure for cooperating with the main body is arranged on the inner surface of one of the plate-like structures, the plate-like structure is a first plate-like structure, and the other plate-like structure is a second plate-like structure.

6. The mechanical aerosol inhaler according to claim 5, characterized in that: The orthographic projection of the first plate-like structure on the plane where the second plate-like structure is located is located inside the second plate-like structure and has an area smaller than that of the second plate-like structure. The counting gear assembly also includes a cover plate fixed on the first plate-like structure, and the cover plate is used to close the missing part of the first plate-like structure, wherein the first limiting structure is arranged on the cover plate.

7. The mechanical aerosol inhaler according to claim 6, characterized in that: The bracket and the cover plate are respectively provided with a positioning column and a buckle, and the shell is provided with a first positioning hole and a second positioning hole matched with the positioning column. The positioning column is inserted into the first positioning hole, and the buckle is inserted into the second positioning hole.

8. The mechanical aerosol inhaler according to claim 7, characterized in that: The first positioning hole and the second positioning hole are formed on two third plate-shaped structures integrally formed with the housing.

9. The mechanical aerosol inhaler according to claim 1, characterized in that: It also includes a back cover which is fixed on the shell, closes the notch of the shell, and covers the counting gear assembly. A viewing window is arranged on the back cover for observing the counting value of the counting gear assembly through the viewing window.

10. The mechanical aerosol inhaler according to claim 9, characterized in that: The window and the back cover are a two-color one-piece molding structure.

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